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-rw-r--r--arch/ppc/cpu/mpc8220/Makefile50
-rw-r--r--arch/ppc/cpu/mpc8220/config.mk30
-rw-r--r--arch/ppc/cpu/mpc8220/cpu.c104
-rw-r--r--arch/ppc/cpu/mpc8220/cpu_init.c136
-rw-r--r--arch/ppc/cpu/mpc8220/dma.h68
-rw-r--r--arch/ppc/cpu/mpc8220/dramSetup.c752
-rw-r--r--arch/ppc/cpu/mpc8220/dramSetup.h108
-rw-r--r--arch/ppc/cpu/mpc8220/fec.c1000
-rw-r--r--arch/ppc/cpu/mpc8220/fec.h283
-rw-r--r--arch/ppc/cpu/mpc8220/fec_dma_tasks.S363
-rw-r--r--arch/ppc/cpu/mpc8220/i2c.c390
-rw-r--r--arch/ppc/cpu/mpc8220/i2cCore.c627
-rw-r--r--arch/ppc/cpu/mpc8220/i2cCore.h103
-rw-r--r--arch/ppc/cpu/mpc8220/interrupts.c80
-rw-r--r--arch/ppc/cpu/mpc8220/io.S128
-rw-r--r--arch/ppc/cpu/mpc8220/loadtask.c78
-rw-r--r--arch/ppc/cpu/mpc8220/pci.c191
-rw-r--r--arch/ppc/cpu/mpc8220/speed.c123
-rw-r--r--arch/ppc/cpu/mpc8220/start.S750
-rw-r--r--arch/ppc/cpu/mpc8220/traps.c236
-rw-r--r--arch/ppc/cpu/mpc8220/u-boot.lds122
-rw-r--r--arch/ppc/cpu/mpc8220/uart.c126
22 files changed, 5848 insertions, 0 deletions
diff --git a/arch/ppc/cpu/mpc8220/Makefile b/arch/ppc/cpu/mpc8220/Makefile
new file mode 100644
index 0000000..b4fad28
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/Makefile
@@ -0,0 +1,50 @@
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(CPU).a
+
+START = start.o
+SOBJS = io.o fec_dma_tasks.o
+COBJS = cpu.o cpu_init.o dramSetup.o fec.o i2c.o \
+ interrupts.o loadtask.o speed.o \
+ traps.o uart.o pci.o
+
+SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
+START := $(addprefix $(obj),$(START))
+
+all: $(obj).depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/ppc/cpu/mpc8220/config.mk b/arch/ppc/cpu/mpc8220/config.mk
new file mode 100644
index 0000000..e2ebf38
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/config.mk
@@ -0,0 +1,30 @@
+#
+# (C) Copyright 2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+PLATFORM_RELFLAGS += -fPIC -meabi
+
+PLATFORM_CPPFLAGS += -DCONFIG_MPC8220 -ffixed-r2 \
+ -mstring -mcpu=603e -mmultiple
+
+# Use default linker script. Board port can override in board/*/config.mk
+LDSCRIPT := $(SRCTREE)/arch/ppc/cpu/mpc8220/u-boot.lds
diff --git a/arch/ppc/cpu/mpc8220/cpu.c b/arch/ppc/cpu/mpc8220/cpu.c
new file mode 100644
index 0000000..563cfe0
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/cpu.c
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * CPU specific code for the MPC8220 CPUs
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc8220.h>
+#include <netdev.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkcpu (void)
+{
+ ulong clock = gd->cpu_clk;
+ char buf[32];
+
+ puts ("CPU: ");
+
+ printf (CPU_ID_STR);
+
+ printf (" (JTAG ID %08lx)", *(vu_long *) (CONFIG_SYS_MBAR + 0x50));
+
+ printf (" at %s MHz\n", strmhz (buf, clock));
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ volatile gptmr8220_t *gptmr = (volatile gptmr8220_t *) MMAP_GPTMR;
+ ulong msr;
+
+ /* Interrupts and MMU off */
+ __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
+
+ msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
+ __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
+
+ /* Charge the watchdog timer */
+ gptmr->Prescl = 10;
+ gptmr->Count = 1;
+
+ gptmr->Mode = GPT_TMS_SGPIO;
+
+ gptmr->Control = GPT_CTRL_WDEN | GPT_CTRL_CE;
+
+ return 1;
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Get timebase clock frequency (like cpu_clk in Hz)
+ *
+ */
+unsigned long get_tbclk (void)
+{
+ ulong tbclk;
+
+ tbclk = (gd->bus_clk + 3L) / 4L;
+
+ return (tbclk);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Initializes on-chip ethernet controllers.
+ * to override, implement board_eth_init()
+ */
+int cpu_eth_init(bd_t *bis)
+{
+#if defined(CONFIG_MPC8220_FEC)
+ mpc8220_fec_initialize(bis);
+#endif
+ return 0;
+}
diff --git a/arch/ppc/cpu/mpc8220/cpu_init.c b/arch/ppc/cpu/mpc8220/cpu_init.c
new file mode 100644
index 0000000..8f52c7d
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/cpu_init.c
@@ -0,0 +1,136 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <mpc8220.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers.
+ */
+void cpu_init_f (void)
+{
+ volatile flexbus8220_t *flexbus = (volatile flexbus8220_t *) MMAP_FB;
+ volatile pcfg8220_t *portcfg = (volatile pcfg8220_t *) MMAP_PCFG;
+ volatile xlbarb8220_t *xlbarb = (volatile xlbarb8220_t *) MMAP_XLBARB;
+
+ /* Pointer is writable since we allocated a register for it */
+ gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+
+ /* Clear initial global data */
+ memset ((void *) gd, 0, sizeof (gd_t));
+
+ /* Clear all port configuration */
+ portcfg->pcfg0 = 0;
+ portcfg->pcfg1 = 0;
+ portcfg->pcfg2 = 0;
+ portcfg->pcfg3 = 0;
+ portcfg->pcfg2 = CONFIG_SYS_GP1_PORT2_CONFIG;
+ portcfg->pcfg3 = CONFIG_SYS_PCI_PORT3_CONFIG | CONFIG_SYS_GP2_PORT3_CONFIG;
+
+ /*
+ * Flexbus Controller: configure chip selects and enable them
+ */
+#if defined (CONFIG_SYS_CS0_BASE)
+ flexbus->csar0 = CONFIG_SYS_CS0_BASE;
+
+/* Sorcery-C can hang-up after CTRL reg initialization */
+#if defined (CONFIG_SYS_CS0_CTRL)
+ flexbus->cscr0 = CONFIG_SYS_CS0_CTRL;
+#endif
+ flexbus->csmr0 = ((CONFIG_SYS_CS0_MASK - 1) & 0xffff0000) | 1;
+ __asm__ volatile ("sync");
+#endif
+#if defined (CONFIG_SYS_CS1_BASE)
+ flexbus->csar1 = CONFIG_SYS_CS1_BASE;
+ flexbus->cscr1 = CONFIG_SYS_CS1_CTRL;
+ flexbus->csmr1 = ((CONFIG_SYS_CS1_MASK - 1) & 0xffff0000) | 1;
+ __asm__ volatile ("sync");
+#endif
+#if defined (CONFIG_SYS_CS2_BASE)
+ flexbus->csar2 = CONFIG_SYS_CS2_BASE;
+ flexbus->cscr2 = CONFIG_SYS_CS2_CTRL;
+ flexbus->csmr2 = ((CONFIG_SYS_CS2_MASK - 1) & 0xffff0000) | 1;
+ portcfg->pcfg3 |= CONFIG_SYS_CS2_PORT3_CONFIG;
+ __asm__ volatile ("sync");
+#endif
+#if defined (CONFIG_SYS_CS3_BASE)
+ flexbus->csar3 = CONFIG_SYS_CS3_BASE;
+ flexbus->cscr3 = CONFIG_SYS_CS3_CTRL;
+ flexbus->csmr3 = ((CONFIG_SYS_CS3_MASK - 1) & 0xffff0000) | 1;
+ portcfg->pcfg3 |= CONFIG_SYS_CS3_PORT3_CONFIG;
+ __asm__ volatile ("sync");
+#endif
+#if defined (CONFIG_SYS_CS4_BASE)
+ flexbus->csar4 = CONFIG_SYS_CS4_BASE;
+ flexbus->cscr4 = CONFIG_SYS_CS4_CTRL;
+ flexbus->csmr4 = ((CONFIG_SYS_CS4_MASK - 1) & 0xffff0000) | 1;
+ portcfg->pcfg3 |= CONFIG_SYS_CS4_PORT3_CONFIG;
+ __asm__ volatile ("sync");
+#endif
+#if defined (CONFIG_SYS_CS5_BASE)
+ flexbus->csar5 = CONFIG_SYS_CS5_BASE;
+ flexbus->cscr5 = CONFIG_SYS_CS5_CTRL;
+ flexbus->csmr5 = ((CONFIG_SYS_CS5_MASK - 1) & 0xffff0000) | 1;
+ portcfg->pcfg3 |= CONFIG_SYS_CS5_PORT3_CONFIG;
+ __asm__ volatile ("sync");
+#endif
+
+ /* This section of the code cannot place in cpu_init_r(),
+ it will cause the system to hang */
+ /* enable timebase */
+ xlbarb->addrTenTimeOut = 0x1000;
+ xlbarb->dataTenTimeOut = 0x1000;
+ xlbarb->busActTimeOut = 0x2000;
+
+ xlbarb->config = 0x00002000;
+
+ /* Master Priority Enable */
+ xlbarb->mastPriority = 0;
+ xlbarb->mastPriEn = 0xff;
+}
+
+/*
+ * initialize higher level parts of CPU like time base and timers
+ */
+int cpu_init_r (void)
+{
+ /* this may belongs to disable interrupt section */
+ /* mask all interrupts */
+ *(vu_long *) 0xf0000700 = 0xfffffc00;
+ *(vu_long *) 0xf0000714 |= 0x0001ffff;
+ *(vu_long *) 0xf0000710 &= ~0x00000f00;
+
+ /* route critical ints to normal ints */
+ *(vu_long *) 0xf0000710 |= 0x00000001;
+
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_MPC8220_FEC)
+ /* load FEC microcode */
+ loadtask (0, 2);
+#endif
+ return (0);
+}
diff --git a/arch/ppc/cpu/mpc8220/dma.h b/arch/ppc/cpu/mpc8220/dma.h
new file mode 100644
index 0000000..d06ee63
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/dma.h
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * This file is based on code
+ * (C) Copyright Motorola, Inc., 2000
+ *
+ * MPC8220 dma header file
+ */
+
+#ifndef __MPC8220_DMA_H
+#define __MPC8220_DMA_H
+
+#include <common.h>
+#include <mpc8220.h>
+
+/* Task number assignment */
+#define FEC_RECV_TASK_NO 0
+#define FEC_XMIT_TASK_NO 1
+
+/*---------------------------------------------------------------------
+ * Stuff for Ethernet Tx/Rx tasks
+ *---------------------------------------------------------------------
+ */
+
+/* Layout of Ethernet controller Parameter SRAM area:
+ * ----------------------------------------------------------------
+ * 0x00: TBD_BASE, base address of TX BD ring
+ * 0x04: TBD_NEXT, address of next TX BD to be processed
+ * 0x08: RBD_BASE, base address of RX BD ring
+ * 0x0C: RBD_NEXT, address of next RX BD to be processed
+ * ---------------------------------------------------------------
+ * ALL PARAMETERS ARE ALL LONGWORDS (FOUR BYTES EACH).
+ */
+
+/* base address of SRAM area to store parameters used by Ethernet tasks */
+#define FEC_PARAM_BASE (MMAP_SRAM + 0x5b00)
+
+/* base address of SRAM area for buffer descriptors */
+#define FEC_BD_BASE (MMAP_SRAM + 0x5b20)
+
+/*---------------------------------------------------------------------
+ * common shortcuts used by driver C code
+ *---------------------------------------------------------------------
+ */
+
+/* Disable SmartDMA task */
+#define DMA_TASK_DISABLE(tasknum) \
+{ \
+ volatile ushort *tcr = (ushort *)(MMAP_DMA + 0x0000001c + 2 * tasknum); \
+ *tcr = (*tcr) & (~0x8000); \
+}
+
+/* Enable SmartDMA task */
+#define DMA_TASK_ENABLE(tasknum) \
+{ \
+ volatile ushort *tcr = (ushort *) (MMAP_DMA + 0x0000001c + 2 * tasknum);\
+ *tcr = (*tcr) | 0x8000; \
+}
+
+/* Clear interrupt pending bits */
+#define DMA_CLEAR_IEVENT(tasknum) \
+{ \
+ struct mpc8220_dma *dma = (struct mpc8220_dma *)MMAP_DMA; \
+ dma->IntPend = (1 << tasknum); \
+}
+
+#endif /* __MPC8220_DMA_H */
diff --git a/arch/ppc/cpu/mpc8220/dramSetup.c b/arch/ppc/cpu/mpc8220/dramSetup.c
new file mode 100644
index 0000000..52cf133
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/dramSetup.c
@@ -0,0 +1,752 @@
+/*
+ * (C) Copyright 2004, Freescale, Inc
+ * TsiChung Liew, Tsi-Chung.Liew@freescale.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+DESCRIPTION
+Read Dram spd and base on its information to calculate the memory size,
+characteristics to initialize the dram on MPC8220
+*/
+
+#include <common.h>
+#include <mpc8220.h>
+#include "i2cCore.h"
+#include "dramSetup.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define SPD_SIZE CONFIG_SYS_SDRAM_SPD_SIZE
+#define DRAM_SPD (CONFIG_SYS_SDRAM_SPD_I2C_ADDR)<<1 /* on Board SPD eeprom */
+#define TOTAL_BANK CONFIG_SYS_SDRAM_TOTAL_BANKS
+
+int spd_status (volatile i2c8220_t * pi2c, u8 sta_bit, u8 truefalse)
+{
+ int i;
+
+ for (i = 0; i < I2C_POLL_COUNT; i++) {
+ if ((pi2c->sr & sta_bit) == (truefalse ? sta_bit : 0))
+ return (OK);
+ }
+
+ return (ERROR);
+}
+
+int spd_clear (volatile i2c8220_t * pi2c)
+{
+ pi2c->adr = 0;
+ pi2c->fdr = 0;
+ pi2c->cr = 0;
+ pi2c->sr = 0;
+
+ return (OK);
+}
+
+int spd_stop (volatile i2c8220_t * pi2c)
+{
+ pi2c->cr &= ~I2C_CTL_STA; /* Generate stop signal */
+ if (spd_status (pi2c, I2C_STA_BB, 0) != OK)
+ return ERROR;
+
+ return (OK);
+}
+
+int spd_readbyte (volatile i2c8220_t * pi2c, u8 * readb, int *index)
+{
+ pi2c->sr &= ~I2C_STA_IF; /* Clear Interrupt Bit */
+ *readb = pi2c->dr; /* Read a byte */
+
+ /*
+ Set I2C_CTRL_TXAK will cause Transfer pending and
+ set I2C_CTRL_STA will cause Interrupt pending
+ */
+ if (*index != 2) {
+ if (spd_status (pi2c, I2C_STA_CF, 1) != OK) /* Transfer not complete? */
+ return ERROR;
+ }
+
+ if (*index != 1) {
+ if (spd_status (pi2c, I2C_STA_IF, 1) != OK)
+ return ERROR;
+ }
+
+ return (OK);
+}
+
+int readSpdData (u8 * spdData)
+{
+ volatile i2c8220_t *pi2cReg;
+ volatile pcfg8220_t *pcfg;
+ u8 slvAdr = DRAM_SPD;
+ u8 Tmp;
+ int Length = SPD_SIZE;
+ int i = 0;
+
+ /* Enable Port Configuration for SDA and SDL signals */
+ pcfg = (volatile pcfg8220_t *) (MMAP_PCFG);
+ __asm__ ("sync");
+ pcfg->pcfg3 &= ~CONFIG_SYS_I2C_PORT3_CONFIG;
+ __asm__ ("sync");
+
+ /* Points the structure to I2c mbar memory offset */
+ pi2cReg = (volatile i2c8220_t *) (MMAP_I2C);
+
+
+ /* Clear FDR, ADR, SR and CR reg */
+ pi2cReg->adr = 0;
+ pi2cReg->fdr = 0;
+ pi2cReg->cr = 0;
+ pi2cReg->sr = 0;
+
+ /* Set for fix XLB Bus Frequency */
+ switch (gd->bus_clk) {
+ case 60000000:
+ pi2cReg->fdr = 0x15;
+ break;
+ case 70000000:
+ pi2cReg->fdr = 0x16;
+ break;
+ case 80000000:
+ pi2cReg->fdr = 0x3a;
+ break;
+ case 90000000:
+ pi2cReg->fdr = 0x17;
+ break;
+ case 100000000:
+ pi2cReg->fdr = 0x3b;
+ break;
+ case 110000000:
+ pi2cReg->fdr = 0x18;
+ break;
+ case 120000000:
+ pi2cReg->fdr = 0x19;
+ break;
+ case 130000000:
+ pi2cReg->fdr = 0x1a;
+ break;
+ }
+
+ pi2cReg->adr = CONFIG_SYS_I2C_SLAVE<<1;
+
+ pi2cReg->cr = I2C_CTL_EN; /* Set Enable */
+
+ /*
+ The I2C bus should be in Idle state. If the bus is busy,
+ clear the STA bit in control register
+ */
+ if (spd_status (pi2cReg, I2C_STA_BB, 0) != OK) {
+ if ((pi2cReg->cr & I2C_CTL_STA) == I2C_CTL_STA)
+ pi2cReg->cr &= ~I2C_CTL_STA;
+
+ /* Check again if it is still busy, return error if found */
+ if (spd_status (pi2cReg, I2C_STA_BB, 1) == OK)
+ return ERROR;
+ }
+
+ pi2cReg->cr |= I2C_CTL_TX; /* Enable the I2c for TX, Ack */
+ pi2cReg->cr |= I2C_CTL_STA; /* Generate start signal */
+
+ if (spd_status (pi2cReg, I2C_STA_BB, 1) != OK)
+ return ERROR;
+
+
+ /* Write slave address */
+ pi2cReg->sr &= ~I2C_STA_IF; /* Clear Interrupt */
+ pi2cReg->dr = slvAdr; /* Write a byte */
+
+ if (spd_status (pi2cReg, I2C_STA_CF, 1) != OK) { /* Transfer not complete? */
+ spd_stop (pi2cReg);
+ return ERROR;
+ }
+
+ if (spd_status (pi2cReg, I2C_STA_IF, 1) != OK) {
+ spd_stop (pi2cReg);
+ return ERROR;
+ }
+
+
+ /* Issue the offset to start */
+ pi2cReg->sr &= ~I2C_STA_IF; /* Clear Interrupt */
+ pi2cReg->dr = 0; /* Write a byte */
+
+ if (spd_status (pi2cReg, I2C_STA_CF, 1) != OK) { /* Transfer not complete? */
+ spd_stop (pi2cReg);
+ return ERROR;
+ }
+
+ if (spd_status (pi2cReg, I2C_STA_IF, 1) != OK) {
+ spd_stop (pi2cReg);
+ return ERROR;
+ }
+
+
+ /* Set repeat start */
+ pi2cReg->cr |= I2C_CTL_RSTA; /* Repeat Start */
+
+ pi2cReg->sr &= ~I2C_STA_IF; /* Clear Interrupt */
+ pi2cReg->dr = slvAdr | 1; /* Write a byte */
+
+ if (spd_status (pi2cReg, I2C_STA_CF, 1) != OK) { /* Transfer not complete? */
+ spd_stop (pi2cReg);
+ return ERROR;
+ }
+
+ if (spd_status (pi2cReg, I2C_STA_IF, 1) != OK) {
+ spd_stop (pi2cReg);
+ return ERROR;
+ }
+
+ if (((pi2cReg->sr & 0x07) == 0x07) || (pi2cReg->sr & 0x01))
+ return ERROR;
+
+ pi2cReg->cr &= ~I2C_CTL_TX; /* Set receive mode */
+
+ if (((pi2cReg->sr & 0x07) == 0x07) || (pi2cReg->sr & 0x01))
+ return ERROR;
+
+ /* Dummy Read */
+ if (spd_readbyte (pi2cReg, &Tmp, &i) != OK) {
+ spd_stop (pi2cReg);
+ return ERROR;
+ }
+
+ i = 0;
+ while (Length) {
+ if (Length == 2)
+ pi2cReg->cr |= I2C_CTL_TXAK;
+
+ if (Length == 1)
+ pi2cReg->cr &= ~I2C_CTL_STA;
+
+ if (spd_readbyte (pi2cReg, spdData, &Length) != OK) {
+ return spd_stop (pi2cReg);
+ }
+ i++;
+ Length--;
+ spdData++;
+ }
+
+ /* Stop the service */
+ spd_stop (pi2cReg);
+
+ return OK;
+}
+
+int getBankInfo (int bank, draminfo_t * pBank)
+{
+ int status;
+ int checksum;
+ int count;
+ u8 spdData[SPD_SIZE];
+
+
+ if (bank > 2 || pBank == 0) {
+ /* illegal values */
+ return (-42);
+ }
+
+ status = readSpdData (&spdData[0]);
+ if (status < 0)
+ return (-1);
+
+ /* check the checksum */
+ for (count = 0, checksum = 0; count < LOC_CHECKSUM; count++)
+ checksum += spdData[count];
+
+ checksum = checksum - ((checksum / 256) * 256);
+
+ if (checksum != spdData[LOC_CHECKSUM])
+ return (-2);
+
+ /* Get the memory type */
+ if (!
+ ((spdData[LOC_TYPE] == TYPE_DDR)
+ || (spdData[LOC_TYPE] == TYPE_SDR)))
+ /* not one of the types we support */
+ return (-3);
+
+ pBank->type = spdData[LOC_TYPE];
+
+ /* Set logical banks */
+ pBank->banks = spdData[LOC_LOGICAL_BANKS];
+
+ /* Check that we have enough physical banks to cover the bank we are
+ * figuring out. Odd-numbered banks correspond to the second bank
+ * on the device.
+ */
+ if (bank & 1) {
+ /* Second bank of a "device" */
+ if (spdData[LOC_PHYS_BANKS] < 2)
+ /* this bank doesn't exist on the "device" */
+ return (-4);
+
+ if (spdData[LOC_ROWS] & 0xf0)
+ /* Two asymmetric banks */
+ pBank->rows = spdData[LOC_ROWS] >> 4;
+ else
+ pBank->rows = spdData[LOC_ROWS];
+
+ if (spdData[LOC_COLS] & 0xf0)
+ /* Two asymmetric banks */
+ pBank->cols = spdData[LOC_COLS] >> 4;
+ else
+ pBank->cols = spdData[LOC_COLS];
+ } else {
+ /* First bank of a "device" */
+ pBank->rows = spdData[LOC_ROWS];
+ pBank->cols = spdData[LOC_COLS];
+ }
+
+ pBank->width = spdData[LOC_WIDTH_HIGH] << 8 | spdData[LOC_WIDTH_LOW];
+ pBank->bursts = spdData[LOC_BURSTS];
+ pBank->CAS = spdData[LOC_CAS];
+ pBank->CS = spdData[LOC_CS];
+ pBank->WE = spdData[LOC_WE];
+ pBank->Trp = spdData[LOC_Trp];
+ pBank->Trcd = spdData[LOC_Trcd];
+ pBank->buffered = spdData[LOC_Buffered] & 1;
+ pBank->refresh = spdData[LOC_REFRESH];
+
+ return (0);
+}
+
+
+/* checkMuxSetting -- given a row/column device geometry, return a mask
+ * of the valid DRAM controller addr_mux settings for
+ * that geometry.
+ *
+ * Arguments: u8 rows: number of row addresses in this device
+ * u8 columns: number of column addresses in this device
+ *
+ * Returns: a mask of the allowed addr_mux settings for this
+ * geometry. Each bit in the mask represents a
+ * possible addr_mux settings (for example, the
+ * (1<<2) bit in the mask represents the 0b10 setting)/
+ *
+ */
+u8 checkMuxSetting (u8 rows, u8 columns)
+{
+ muxdesc_t *pIdx, *pMux;
+ u8 mask;
+ int lrows, lcolumns;
+ u32 mux[4] = { 0x00080c04, 0x01080d03, 0x02080e02, 0xffffffff };
+
+ /* Setup MuxDescriptor in SRAM space */
+ /* MUXDESC AddressRuns [] = {
+ { 0, 8, 12, 4 }, / setting, columns, rows, extra columns /
+ { 1, 8, 13, 3 }, / setting, columns, rows, extra columns /
+ { 2, 8, 14, 2 }, / setting, columns, rows, extra columns /
+ { 0xff } / list terminator /
+ }; */
+
+ pIdx = (muxdesc_t *) & mux[0];
+
+ /* Check rows x columns against each possible address mux setting */
+ for (pMux = pIdx, mask = 0;; pMux++) {
+ lrows = rows;
+ lcolumns = columns;
+
+ if (pMux->MuxValue == 0xff)
+ break; /* end of list */
+
+ /* For a given mux setting, since we want all the memory in a
+ * device to be contiguous, we want the device "use up" the
+ * address lines such that there are no extra column or row
+ * address lines on the device.
+ */
+
+ lcolumns -= pMux->Columns;
+ if (lcolumns < 0)
+ /* Not enough columns to get to the rows */
+ continue;
+
+ lrows -= pMux->Rows;
+ if (lrows > 0)
+ /* we have extra rows left -- can't do that! */
+ continue;
+
+ /* At this point, we either have to have used up all the
+ * rows or we have to have no columns left.
+ */
+
+ if (lcolumns != 0 && lrows != 0)
+ /* rows AND columns are left. Bad! */
+ continue;
+
+ lcolumns -= pMux->MoreColumns;
+
+ if (lcolumns <= 0)
+ mask |= (1 << pMux->MuxValue);
+ }
+
+ return (mask);
+}
+
+
+u32 dramSetup (void)
+{
+ draminfo_t DramInfo[TOTAL_BANK];
+ draminfo_t *pDramInfo;
+ u32 size, temp, cfg_value, mode_value, refresh;
+ u8 *ptr;
+ u8 bursts, Trp, Trcd, type, buffered;
+ u8 muxmask, rows, columns;
+ int count, banknum;
+ u32 *prefresh, *pIdx;
+ u32 refrate[8] = { 15625, 3900, 7800, 31300,
+ 62500, 125000, 0xffffffff, 0xffffffff
+ };
+ volatile sysconf8220_t *sysconf;
+ volatile memctl8220_t *memctl;
+
+ sysconf = (volatile sysconf8220_t *) MMAP_MBAR;
+ memctl = (volatile memctl8220_t *) MMAP_MEMCTL;
+
+ /* Set everything in the descriptions to zero */
+ ptr = (u8 *) & DramInfo[0];
+ for (count = 0; count < sizeof (DramInfo); count++)
+ *ptr++ = 0;
+
+ for (banknum = 0; banknum < TOTAL_BANK; banknum++)
+ sysconf->cscfg[banknum];
+
+ /* Descriptions of row/column address muxing for various
+ * addr_mux settings.
+ */
+
+ pIdx = prefresh = (u32 *) & refrate[0];
+
+ /* Get all the info for all three logical banks */
+ bursts = 0xff;
+ Trp = 0;
+ Trcd = 0;
+ type = 0;
+ buffered = 0xff;
+ refresh = 0xffffffff;
+ muxmask = 0xff;
+
+ /* Two bank, CS0 and CS1 */
+ for (banknum = 0, pDramInfo = &DramInfo[0];
+ banknum < TOTAL_BANK; banknum++, pDramInfo++) {
+ pDramInfo->ordinal = banknum; /* initial sorting */
+ if (getBankInfo (banknum, pDramInfo) < 0)
+ continue;
+
+ /* get cumulative parameters of all three banks */
+ if (type && pDramInfo->type != type)
+ return 0;
+
+ type = pDramInfo->type;
+ rows = pDramInfo->rows;
+ columns = pDramInfo->cols;
+
+ /* This chip only supports 13 DRAM memory lines, but some devices
+ * have 14 rows. To deal with this, ignore the 14th address line
+ * by limiting the number of rows (and columns) to 13. This will
+ * mean that for 14-row devices we will only be able to use
+ * half of the memory, but it's better than nothing.
+ */
+ if (rows > 13)
+ rows = 13;
+ if (columns > 13)
+ columns = 13;
+
+ pDramInfo->size =
+ ((1 << (rows + columns)) * pDramInfo->width);
+ pDramInfo->size *= pDramInfo->banks;
+ pDramInfo->size >>= 3;
+
+ /* figure out which addr_mux configurations will support this device */
+ muxmask &= checkMuxSetting (rows, columns);
+ if (muxmask == 0)
+ return 0;
+
+ buffered = pDramInfo->buffered;
+ bursts &= pDramInfo->bursts; /* union of all bursts */
+ if (pDramInfo->Trp > Trp) /* worst case (longest) Trp */
+ Trp = pDramInfo->Trp;
+
+ if (pDramInfo->Trcd > Trcd) /* worst case (longest) Trcd */
+ Trcd = pDramInfo->Trcd;
+
+ prefresh = pIdx;
+ /* worst case (shortest) Refresh period */
+ if (refresh > prefresh[pDramInfo->refresh & 7])
+ refresh = prefresh[pDramInfo->refresh & 7];
+
+ } /* for loop */
+
+
+ /* We only allow a burst length of 8! */
+ if (!(bursts & 8))
+ bursts = 8;
+
+ /* Sort the devices. In order to get each chip select region
+ * aligned properly, put the biggest device at the lowest address.
+ * A simple bubble sort will do the trick.
+ */
+ for (banknum = 0, pDramInfo = &DramInfo[0];
+ banknum < TOTAL_BANK; banknum++, pDramInfo++) {
+ int i;
+
+ for (i = 0; i < TOTAL_BANK; i++) {
+ if (pDramInfo->size < DramInfo[i].size &&
+ pDramInfo->ordinal < DramInfo[i].ordinal) {
+ /* If the current bank is smaller, but if the ordinal is also
+ * smaller, swap the ordinals
+ */
+ u8 temp8;
+
+ temp8 = DramInfo[i].ordinal;
+ DramInfo[i].ordinal = pDramInfo->ordinal;
+ pDramInfo->ordinal = temp8;
+ }
+ }
+ }
+
+
+ /* Now figure out the base address for each bank. While
+ * we're at it, figure out how much memory there is.
+ *
+ */
+ size = 0;
+ for (banknum = 0; banknum < TOTAL_BANK; banknum++) {
+ int i;
+
+ for (i = 0; i < TOTAL_BANK; i++) {
+ if (DramInfo[i].ordinal == banknum
+ && DramInfo[i].size != 0) {
+ DramInfo[i].base = size;
+ size += DramInfo[i].size;
+ }
+ }
+ }
+
+ /* Set up the Drive Strength register */
+ sysconf->sdramds = CONFIG_SYS_SDRAM_DRIVE_STRENGTH;
+
+ /* ********************** Cfg 1 ************************* */
+
+ /* Set the single read to read/write/precharge delay */
+ cfg_value = CFG1_SRD2RWP ((type == TYPE_DDR) ? 7 : 0xb);
+
+ /* Set the single write to read/write/precharge delay.
+ * This may or may not be correct. The controller spec
+ * says "tWR", but "tWR" does not appear in the SPD. It
+ * always seems to be 15nsec for the class of device we're
+ * using, which turns out to be 2 clock cycles at 133MHz,
+ * so that's what we're going to use.
+ *
+ * HOWEVER, because of a bug in the controller, for DDR
+ * we need to set this to be the same as the value
+ * calculated for bwt2rwp.
+ */
+ cfg_value |= CFG1_SWT2RWP ((type == TYPE_DDR) ? 7 : 2);
+
+ /* Set the Read CAS latency. We're going to use a CL of
+ * 2.5 for DDR and 2 SDR.
+ */
+ cfg_value |= CFG1_RLATENCY ((type == TYPE_DDR) ? 7 : 2);
+
+
+ /* Set the Active to Read/Write delay. This depends
+ * on Trcd which is reported as nanoseconds times 4.
+ * We want to calculate Trcd (in nanoseconds) times XLB clock (in Hz)
+ * which gives us a dimensionless quantity. Play games with
+ * the divisions so we don't run out of dynamic ranges.
+ */
+ /* account for megaherz and the times 4 */
+ temp = (Trcd * (gd->bus_clk / 1000000)) / 4;
+
+ /* account for nanoseconds and round up, with a minimum value of 2 */
+ temp = ((temp + 999) / 1000) - 1;
+ if (temp < 2)
+ temp = 2;
+
+ cfg_value |= CFG1_ACT2WR (temp);
+
+ /* Set the precharge to active delay. This depends
+ * on Trp which is reported as nanoseconds times 4.
+ * We want to calculate Trp (in nanoseconds) times XLB clock (in Hz)
+ * which gives us a dimensionless quantity. Play games with
+ * the divisions so we don't run out of dynamic ranges.
+ */
+ /* account for megaherz and the times 4 */
+ temp = (Trp * (gd->bus_clk / 1000000)) / 4;
+
+ /* account for nanoseconds and round up, then subtract 1, with a
+ * minumum value of 1 and a maximum value of 7.
+ */
+ temp = (((temp + 999) / 1000) - 1) & 7;
+ if (temp < 1)
+ temp = 1;
+
+ cfg_value |= CFG1_PRE2ACT (temp);
+
+ /* Set refresh to active delay. This depends
+ * on Trfc which is not reported in the SPD.
+ * We'll use a nominal value of 75nsec which is
+ * what the controller spec uses.
+ */
+ temp = (75 * (gd->bus_clk / 1000000));
+ /* account for nanoseconds and round up, then subtract 1 */
+ cfg_value |= CFG1_REF2ACT (((temp + 999) / 1000) - 1);
+
+ /* Set the write latency, using the values given in the controller spec */
+ cfg_value |= CFG1_WLATENCY ((type == TYPE_DDR) ? 3 : 0);
+ memctl->cfg1 = cfg_value; /* cfg 1 */
+ asm volatile ("sync");
+
+
+ /* ********************** Cfg 2 ************************* */
+
+ /* Set the burst read to read/precharge delay */
+ cfg_value = CFG2_BRD2RP ((type == TYPE_DDR) ? 5 : 8);
+
+ /* Set the burst write to read/precharge delay. Semi-magic numbers
+ * based on the controller spec recommendations, assuming tWR is
+ * two clock cycles.
+ */
+ cfg_value |= CFG2_BWT2RWP ((type == TYPE_DDR) ? 7 : 10);
+
+ /* Set the Burst read to write delay. Semi-magic numbers
+ * based on the DRAM controller documentation.
+ */
+ cfg_value |= CFG2_BRD2WT ((type == TYPE_DDR) ? 7 : 0xb);
+
+ /* Set the burst length -- must be 8!! Well, 7, actually, becuase
+ * it's burst lenght minus 1.
+ */
+ cfg_value |= CFG2_BURSTLEN (7);
+ memctl->cfg2 = cfg_value; /* cfg 2 */
+ asm volatile ("sync");
+
+
+ /* ********************** mode ************************* */
+
+ /* Set enable bit, CKE high/low bits, and the DDR/SDR mode bit,
+ * disable automatic refresh.
+ */
+ cfg_value = CTL_MODE_ENABLE | CTL_CKE_HIGH |
+ ((type == TYPE_DDR) ? CTL_DDR_MODE : 0);
+
+ /* Set the address mux based on whichever setting(s) is/are common
+ * to all the devices we have. If there is more than one, choose
+ * one arbitrarily.
+ */
+ if (muxmask & 0x4)
+ cfg_value |= CTL_ADDRMUX (2);
+ else if (muxmask & 0x2)
+ cfg_value |= CTL_ADDRMUX (1);
+ else
+ cfg_value |= CTL_ADDRMUX (0);
+
+ /* Set the refresh interval. */
+ temp = ((refresh * (gd->bus_clk / 1000000)) / (1000 * 64)) - 1;
+ cfg_value |= CTL_REFRESH_INTERVAL (temp);
+
+ /* Set buffered/non-buffered memory */
+ if (buffered)
+ cfg_value |= CTL_BUFFERED;
+
+ memctl->ctrl = cfg_value; /* ctrl */
+ asm volatile ("sync");
+
+ if (type == TYPE_DDR) {
+ /* issue precharge all */
+ temp = cfg_value | CTL_PRECHARGE_CMD;
+ memctl->ctrl = temp; /* ctrl */
+ asm volatile ("sync");
+ }
+
+
+ /* Set up mode value for CAS latency */
+#if (CONFIG_SYS_SDRAM_CAS_LATENCY==5) /* CL=2.5 */
+ mode_value = (MODE_MODE | MODE_BURSTLEN (MODE_BURSTLEN_8) |
+ MODE_BT_SEQUENTIAL | MODE_CL (MODE_CL_2p5) | MODE_CMD);
+#else
+ mode_value = (MODE_MODE | MODE_BURSTLEN (MODE_BURSTLEN_8) |
+ MODE_BT_SEQUENTIAL | MODE_CL (MODE_CL_2) | MODE_CMD);
+#endif
+ asm volatile ("sync");
+
+ /* Write Extended Mode - enable DLL */
+ if (type == TYPE_DDR) {
+ temp = MODE_EXTENDED | MODE_X_DLL_ENABLE |
+ MODE_X_DS_NORMAL | MODE_CMD;
+ memctl->mode = (temp >> 16); /* mode */
+ asm volatile ("sync");
+
+ /* Write Mode - reset DLL, set CAS latency */
+ temp = mode_value | MODE_OPMODE (MODE_OPMODE_RESETDLL);
+ memctl->mode = (temp >> 16); /* mode */
+ asm volatile ("sync");
+ }
+
+ /* Program the chip selects. */
+ for (banknum = 0; banknum < TOTAL_BANK; banknum++) {
+ if (DramInfo[banknum].size != 0) {
+ u32 mask;
+ int i;
+
+ for (i = 0, mask = 1; i < 32; mask <<= 1, i++) {
+ if (DramInfo[banknum].size & mask)
+ break;
+ }
+ temp = (DramInfo[banknum].base & 0xfff00000) | (i -
+ 1);
+
+ sysconf->cscfg[banknum] = temp;
+ asm volatile ("sync");
+ }
+ }
+
+ /* Wait for DLL lock */
+ udelay (200);
+
+ temp = cfg_value | CTL_PRECHARGE_CMD; /* issue precharge all */
+ memctl->ctrl = temp; /* ctrl */
+ asm volatile ("sync");
+
+ temp = cfg_value | CTL_REFRESH_CMD; /* issue precharge all */
+ memctl->ctrl = temp; /* ctrl */
+ asm volatile ("sync");
+
+ memctl->ctrl = temp; /* ctrl */
+ asm volatile ("sync");
+
+ /* Write Mode - DLL normal */
+ temp = mode_value | MODE_OPMODE (MODE_OPMODE_NORMAL);
+ memctl->mode = (temp >> 16); /* mode */
+ asm volatile ("sync");
+
+ /* Enable refresh, enable DQS's (if DDR), and lock the control register */
+ cfg_value &= ~CTL_MODE_ENABLE; /* lock register */
+ cfg_value |= CTL_REFRESH_ENABLE; /* enable refresh */
+
+ if (type == TYPE_DDR)
+ cfg_value |= CTL_DQSOEN (0xf); /* enable DQS's for DDR */
+
+ memctl->ctrl = cfg_value; /* ctrl */
+ asm volatile ("sync");
+
+ return size;
+}
diff --git a/arch/ppc/cpu/mpc8220/dramSetup.h b/arch/ppc/cpu/mpc8220/dramSetup.h
new file mode 100644
index 0000000..3b64e08
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/dramSetup.h
@@ -0,0 +1,108 @@
+/*
+ * dramSetup.h
+ *
+ * Prototypes, etc. for the Motorola MPC8220
+ * embedded cpu chips
+ *
+ * 2004 (c) Freescale, Inc.
+ * Author: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef __INCdramsetuph
+#define __INCdramsetuph
+#ifndef __ASSEMBLY__
+/* Where various things are in the SPD */
+#define LOC_TYPE 2
+#define LOC_CHECKSUM 63
+#define LOC_PHYS_BANKS 5
+#define LOC_LOGICAL_BANKS 17
+#define LOC_ROWS 3
+#define LOC_COLS 4
+#define LOC_WIDTH_HIGH 7
+#define LOC_WIDTH_LOW 6
+#define LOC_REFRESH 12
+#define LOC_BURSTS 16
+#define LOC_CAS 18
+#define LOC_CS 19
+#define LOC_WE 20
+#define LOC_Tcyc 9
+#define LOC_Tac 10
+#define LOC_Trp 27
+#define LOC_Trrd 28
+#define LOC_Trcd 29
+#define LOC_Tras 30
+#define LOC_Buffered 21
+/* Types of memory the SPD can tell us about.
+ * We can actually only use SDRAM and DDR.
+ */
+#define TYPE_DRAM 1 /* plain old dram */
+#define TYPE_EDO 2 /* EDO dram */
+#define TYPE_Nibble 3 /* serial nibble memory */
+#define TYPE_SDR 4 /* SDRAM */
+#define TYPE_ROM 5 /* */
+#define TYPE_SGRRAM 6 /* graphics memory */
+#define TYPE_DDR 7 /* DDR sdram */
+#define SDRAMDS_MASK 0x3 /* each field is 2 bits wide */
+#define SDRAMDS_SBE_SHIFT 8 /* Clock enable drive strength */
+#define SDRAMDS_SBC_SHIFT 6 /* Clocks drive strength */
+#define SDRAMDS_SBA_SHIFT 4 /* Address drive strength */
+#define SDRAMDS_SBS_SHIFT 2 /* SDR DQS drive strength */
+#define SDRAMDS_SBD_SHIFT 0 /* Data and DQS drive strength */
+#define DRIVE_STRENGTH_HIGH 0
+#define DRIVE_STRENGTH_MED 1
+#define DRIVE_STRENGTH_LOW 2
+#define DRIVE_STRENGTH_OFF 3
+
+#define OK 0
+#define ERROR -1
+/* Structure to hold information about address muxing. */
+ typedef struct tagMuxDescriptor {
+ u8 MuxValue;
+ u8 Columns;
+ u8 Rows;
+ u8 MoreColumns;
+} muxdesc_t;
+
+/* Structure to define one physical bank of
+ * memory. Note that dram size in bytes is
+ * (2^^(rows+columns)) * width * banks / 8
+*/
+typedef struct tagDramInfo {
+ u32 size; /* size in bytes */
+ u32 base; /* base address */
+ u8 ordinal; /* where in the memory map will we put this */
+ u8 type;
+ u8 rows;
+ u8 cols;
+ u16 width; /* width of each chip in bits */
+ u8 banks; /* number of chips, aka logical banks */
+ u8 bursts; /* bit-encoded allowable burst length */
+ u8 CAS; /* bit-encoded CAS latency values */
+ u8 CS; /* bit-encoded CS latency values */
+ u8 WE; /* bit-encoded WE latency values */
+ u8 Trp; /* bit-encoded row precharge time */
+ u8 Trcd; /* bit-encoded RAS to CAS delay */
+ u8 buffered; /* buffered or not */
+ u8 refresh; /* encoded refresh rate */
+} draminfo_t;
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __INCdramsetuph */
diff --git a/arch/ppc/cpu/mpc8220/fec.c b/arch/ppc/cpu/mpc8220/fec.c
new file mode 100644
index 0000000..992e0ff
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/fec.c
@@ -0,0 +1,1000 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * This file is based on mpc4200fec.c,
+ * (C) Copyright Motorola, Inc., 2000
+ */
+
+#include <common.h>
+#include <mpc8220.h>
+#include <malloc.h>
+#include <net.h>
+#include <miiphy.h>
+#include "dma.h"
+#include "fec.h"
+
+#undef DEBUG
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI) && \
+ defined(CONFIG_MPC8220_FEC)
+
+#if !(defined(CONFIG_MII) || defined(CONFIG_CMD_MII))
+#error "CONFIG_MII has to be defined!"
+#endif
+
+#ifdef DEBUG
+static void tfifo_print (char *devname, mpc8220_fec_priv * fec);
+static void rfifo_print (char *devname, mpc8220_fec_priv * fec);
+#endif /* DEBUG */
+
+#ifdef DEBUG
+static u32 local_crc32 (char *string, unsigned int crc_value, int len);
+#endif
+
+typedef struct {
+ u8 data[1500]; /* actual data */
+ int length; /* actual length */
+ int used; /* buffer in use or not */
+ u8 head[16]; /* MAC header(6 + 6 + 2) + 2(aligned) */
+} NBUF;
+
+int fec8220_miiphy_read (char *devname, u8 phyAddr, u8 regAddr, u16 * retVal);
+int fec8220_miiphy_write (char *devname, u8 phyAddr, u8 regAddr, u16 data);
+
+/********************************************************************/
+#ifdef DEBUG
+static void mpc8220_fec_phydump (char *devname)
+{
+ u16 phyStatus, i;
+ u8 phyAddr = CONFIG_PHY_ADDR;
+ u8 reg_mask[] = {
+#if CONFIG_PHY_TYPE == 0x79c874 /* AMD Am79C874 */
+ /* regs to print: 0...7, 16...19, 21, 23, 24 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+#else
+ /* regs to print: 0...8, 16...20 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+ 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+ };
+
+ for (i = 0; i < 32; i++) {
+ if (reg_mask[i]) {
+ miiphy_read (devname, phyAddr, i, &phyStatus);
+ printf ("Mii reg %d: 0x%04x\n", i, phyStatus);
+ }
+ }
+}
+#endif
+
+/********************************************************************/
+static int mpc8220_fec_rbd_init (mpc8220_fec_priv * fec)
+{
+ int ix;
+ char *data;
+ static int once = 0;
+
+ for (ix = 0; ix < FEC_RBD_NUM; ix++) {
+ if (!once) {
+ data = (char *) malloc (FEC_MAX_PKT_SIZE);
+ if (data == NULL) {
+ printf ("RBD INIT FAILED\n");
+ return -1;
+ }
+ fec->rbdBase[ix].dataPointer = (u32) data;
+ }
+ fec->rbdBase[ix].status = FEC_RBD_EMPTY;
+ fec->rbdBase[ix].dataLength = 0;
+ }
+ once++;
+
+ /*
+ * have the last RBD to close the ring
+ */
+ fec->rbdBase[ix - 1].status |= FEC_RBD_WRAP;
+ fec->rbdIndex = 0;
+
+ return 0;
+}
+
+/********************************************************************/
+static void mpc8220_fec_tbd_init (mpc8220_fec_priv * fec)
+{
+ int ix;
+
+ for (ix = 0; ix < FEC_TBD_NUM; ix++) {
+ fec->tbdBase[ix].status = 0;
+ }
+
+ /*
+ * Have the last TBD to close the ring
+ */
+ fec->tbdBase[ix - 1].status |= FEC_TBD_WRAP;
+
+ /*
+ * Initialize some indices
+ */
+ fec->tbdIndex = 0;
+ fec->usedTbdIndex = 0;
+ fec->cleanTbdNum = FEC_TBD_NUM;
+}
+
+/********************************************************************/
+static void mpc8220_fec_rbd_clean (mpc8220_fec_priv * fec, FEC_RBD * pRbd)
+{
+ /*
+ * Reset buffer descriptor as empty
+ */
+ if ((fec->rbdIndex) == (FEC_RBD_NUM - 1))
+ pRbd->status = (FEC_RBD_WRAP | FEC_RBD_EMPTY);
+ else
+ pRbd->status = FEC_RBD_EMPTY;
+
+ pRbd->dataLength = 0;
+
+ /*
+ * Now, we have an empty RxBD, restart the SmartDMA receive task
+ */
+ DMA_TASK_ENABLE (FEC_RECV_TASK_NO);
+
+ /*
+ * Increment BD count
+ */
+ fec->rbdIndex = (fec->rbdIndex + 1) % FEC_RBD_NUM;
+}
+
+/********************************************************************/
+static void mpc8220_fec_tbd_scrub (mpc8220_fec_priv * fec)
+{
+ FEC_TBD *pUsedTbd;
+
+#ifdef DEBUG
+ printf ("tbd_scrub: fec->cleanTbdNum = %d, fec->usedTbdIndex = %d\n",
+ fec->cleanTbdNum, fec->usedTbdIndex);
+#endif
+
+ /*
+ * process all the consumed TBDs
+ */
+ while (fec->cleanTbdNum < FEC_TBD_NUM) {
+ pUsedTbd = &fec->tbdBase[fec->usedTbdIndex];
+ if (pUsedTbd->status & FEC_TBD_READY) {
+#ifdef DEBUG
+ printf ("Cannot clean TBD %d, in use\n",
+ fec->cleanTbdNum);
+#endif
+ return;
+ }
+
+ /*
+ * clean this buffer descriptor
+ */
+ if (fec->usedTbdIndex == (FEC_TBD_NUM - 1))
+ pUsedTbd->status = FEC_TBD_WRAP;
+ else
+ pUsedTbd->status = 0;
+
+ /*
+ * update some indeces for a correct handling of the TBD ring
+ */
+ fec->cleanTbdNum++;
+ fec->usedTbdIndex = (fec->usedTbdIndex + 1) % FEC_TBD_NUM;
+ }
+}
+
+/********************************************************************/
+static void mpc8220_fec_set_hwaddr (mpc8220_fec_priv * fec, char *mac)
+{
+ u8 currByte; /* byte for which to compute the CRC */
+ int byte; /* loop - counter */
+ int bit; /* loop - counter */
+ u32 crc = 0xffffffff; /* initial value */
+
+ /*
+ * The algorithm used is the following:
+ * we loop on each of the six bytes of the provided address,
+ * and we compute the CRC by left-shifting the previous
+ * value by one position, so that each bit in the current
+ * byte of the address may contribute the calculation. If
+ * the latter and the MSB in the CRC are different, then
+ * the CRC value so computed is also ex-ored with the
+ * "polynomium generator". The current byte of the address
+ * is also shifted right by one bit at each iteration.
+ * This is because the CRC generatore in hardware is implemented
+ * as a shift-register with as many ex-ores as the radixes
+ * in the polynomium. This suggests that we represent the
+ * polynomiumm itself as a 32-bit constant.
+ */
+ for (byte = 0; byte < 6; byte++) {
+ currByte = mac[byte];
+ for (bit = 0; bit < 8; bit++) {
+ if ((currByte & 0x01) ^ (crc & 0x01)) {
+ crc >>= 1;
+ crc = crc ^ 0xedb88320;
+ } else {
+ crc >>= 1;
+ }
+ currByte >>= 1;
+ }
+ }
+
+ crc = crc >> 26;
+
+ /*
+ * Set individual hash table register
+ */
+ if (crc >= 32) {
+ fec->eth->iaddr1 = (1 << (crc - 32));
+ fec->eth->iaddr2 = 0;
+ } else {
+ fec->eth->iaddr1 = 0;
+ fec->eth->iaddr2 = (1 << crc);
+ }
+
+ /*
+ * Set physical address
+ */
+ fec->eth->paddr1 =
+ (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
+ fec->eth->paddr2 = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
+}
+
+/********************************************************************/
+static int mpc8220_fec_init (struct eth_device *dev, bd_t * bis)
+{
+ mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv;
+ struct mpc8220_dma *dma = (struct mpc8220_dma *) MMAP_DMA;
+ const u8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */
+
+#ifdef DEBUG
+ printf ("mpc8220_fec_init... Begin\n");
+#endif
+
+ /*
+ * Initialize RxBD/TxBD rings
+ */
+ mpc8220_fec_rbd_init (fec);
+ mpc8220_fec_tbd_init (fec);
+
+ /*
+ * Set up Pin Muxing for FEC 1
+ */
+ *(vu_long *) MMAP_PCFG = 0;
+ *(vu_long *) (MMAP_PCFG + 4) = 0;
+ /*
+ * Clear FEC-Lite interrupt event register(IEVENT)
+ */
+ fec->eth->ievent = 0xffffffff;
+
+ /*
+ * Set interrupt mask register
+ */
+ fec->eth->imask = 0x00000000;
+
+ /*
+ * Set FEC-Lite receive control register(R_CNTRL):
+ */
+ if (fec->xcv_type == SEVENWIRE) {
+ /*
+ * Frame length=1518; 7-wire mode
+ */
+ fec->eth->r_cntrl = 0x05ee0020; /*0x05ee0000;FIXME */
+ } else {
+ /*
+ * Frame length=1518; MII mode;
+ */
+ fec->eth->r_cntrl = 0x05ee0024; /*0x05ee0004;FIXME */
+ }
+
+ fec->eth->x_cntrl = 0x00000000; /* half-duplex, heartbeat disabled */
+ if (fec->xcv_type != SEVENWIRE) {
+ /*
+ * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
+ * and do not drop the Preamble.
+ */
+ /* tbd - rtm */
+ /*fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); */
+ /* No MII for 7-wire mode */
+ fec->eth->mii_speed = 0x00000030;
+ }
+
+ /*
+ * Set Opcode/Pause Duration Register
+ */
+ fec->eth->op_pause = 0x00010020; /*FIXME0xffff0020; */
+
+ /*
+ * Set Rx FIFO alarm and granularity value
+ */
+ fec->eth->rfifo_cntrl = 0x0c000000;
+ fec->eth->rfifo_alarm = 0x0000030c;
+#ifdef DEBUG
+ if (fec->eth->rfifo_status & 0x00700000) {
+ printf ("mpc8220_fec_init() RFIFO error\n");
+ }
+#endif
+
+ /*
+ * Set Tx FIFO granularity value
+ */
+ /*fec->eth->tfifo_cntrl = 0x0c000000; */ /*tbd - rtm */
+ fec->eth->tfifo_cntrl = 0x0e000000;
+#ifdef DEBUG
+ printf ("tfifo_status: 0x%08x\n", fec->eth->tfifo_status);
+ printf ("tfifo_alarm: 0x%08x\n", fec->eth->tfifo_alarm);
+#endif
+
+ /*
+ * Set transmit fifo watermark register(X_WMRK), default = 64
+ */
+ fec->eth->tfifo_alarm = 0x00000080;
+ fec->eth->x_wmrk = 0x2;
+
+ /*
+ * Set individual address filter for unicast address
+ * and set physical address registers.
+ */
+ mpc8220_fec_set_hwaddr (fec, (char *)(dev->enetaddr));
+
+ /*
+ * Set multicast address filter
+ */
+ fec->eth->gaddr1 = 0x00000000;
+ fec->eth->gaddr2 = 0x00000000;
+
+ /*
+ * Turn ON cheater FSM: ????
+ */
+ fec->eth->xmit_fsm = 0x03000000;
+
+#if 1
+/*#if defined(CONFIG_MPC5200)*/
+ /*
+ * Turn off COMM bus prefetch in the MGT5200 BestComm. It doesn't
+ * work w/ the current receive task.
+ */
+ dma->PtdCntrl |= 0x00000001;
+#endif
+
+ /*
+ * Set priority of different initiators
+ */
+ dma->IPR0 = 7; /* always */
+ dma->IPR3 = 6; /* Eth RX */
+ dma->IPR4 = 5; /* Eth Tx */
+
+ /*
+ * Clear SmartDMA task interrupt pending bits
+ */
+ DMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
+
+ /*
+ * Initialize SmartDMA parameters stored in SRAM
+ */
+ *(int *) FEC_TBD_BASE = (int) fec->tbdBase;
+ *(int *) FEC_RBD_BASE = (int) fec->rbdBase;
+ *(int *) FEC_TBD_NEXT = (int) fec->tbdBase;
+ *(int *) FEC_RBD_NEXT = (int) fec->rbdBase;
+
+ if (fec->xcv_type != SEVENWIRE) {
+ /*
+ * Initialize PHY(LXT971A):
+ *
+ * Generally, on power up, the LXT971A reads its configuration
+ * pins to check for forced operation, If not cofigured for
+ * forced operation, it uses auto-negotiation/parallel detection
+ * to automatically determine line operating conditions.
+ * If the PHY device on the other side of the link supports
+ * auto-negotiation, the LXT971A auto-negotiates with it
+ * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not
+ * support auto-negotiation, the LXT971A automatically detects
+ * the presence of either link pulses(10Mbps PHY) or Idle
+ * symbols(100Mbps) and sets its operating conditions accordingly.
+ *
+ * When auto-negotiation is controlled by software, the following
+ * steps are recommended.
+ *
+ * Note:
+ * The physical address is dependent on hardware configuration.
+ *
+ */
+ int timeout = 1;
+ u16 phyStatus;
+
+ /*
+ * Reset PHY, then delay 300ns
+ */
+ miiphy_write (dev->name, phyAddr, 0x0, 0x8000);
+ udelay (1000);
+
+ if (fec->xcv_type == MII10) {
+ /*
+ * Force 10Base-T, FDX operation
+ */
+#ifdef DEBUG
+ printf ("Forcing 10 Mbps ethernet link... ");
+#endif
+ miiphy_read (dev->name, phyAddr, 0x1, &phyStatus);
+ /*
+ miiphy_write(fec, phyAddr, 0x0, 0x0100);
+ */
+ miiphy_write (dev->name, phyAddr, 0x0, 0x0180);
+
+ timeout = 20;
+ do { /* wait for link status to go down */
+ udelay (10000);
+ if ((timeout--) == 0) {
+#ifdef DEBUG
+ printf ("hmmm, should not have waited...");
+#endif
+ break;
+ }
+ miiphy_read (dev->name, phyAddr, 0x1, &phyStatus);
+#ifdef DEBUG
+ printf ("=");
+#endif
+ } while ((phyStatus & 0x0004)); /* !link up */
+
+ timeout = 1000;
+ do { /* wait for link status to come back up */
+ udelay (10000);
+ if ((timeout--) == 0) {
+ printf ("failed. Link is down.\n");
+ break;
+ }
+ miiphy_read (dev->name, phyAddr, 0x1, &phyStatus);
+#ifdef DEBUG
+ printf ("+");
+#endif
+ } while (!(phyStatus & 0x0004)); /* !link up */
+
+#ifdef DEBUG
+ printf ("done.\n");
+#endif
+ } else { /* MII100 */
+ /*
+ * Set the auto-negotiation advertisement register bits
+ */
+ miiphy_write (dev->name, phyAddr, 0x4, 0x01e1);
+
+ /*
+ * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation
+ */
+ miiphy_write (dev->name, phyAddr, 0x0, 0x1200);
+
+ /*
+ * Wait for AN completion
+ */
+ timeout = 5000;
+ do {
+ udelay (1000);
+
+ if ((timeout--) == 0) {
+#ifdef DEBUG
+ printf ("PHY auto neg 0 failed...\n");
+#endif
+ return -1;
+ }
+
+ if (miiphy_read (dev->name, phyAddr, 0x1, &phyStatus) !=
+ 0) {
+#ifdef DEBUG
+ printf ("PHY auto neg 1 failed 0x%04x...\n", phyStatus);
+#endif
+ return -1;
+ }
+ } while (!(phyStatus & 0x0004));
+
+#ifdef DEBUG
+ printf ("PHY auto neg complete! \n");
+#endif
+ }
+
+ }
+
+ /*
+ * Enable FEC-Lite controller
+ */
+ fec->eth->ecntrl |= 0x00000006;
+
+#ifdef DEBUG
+ if (fec->xcv_type != SEVENWIRE)
+ mpc8220_fec_phydump (dev->name);
+#endif
+
+ /*
+ * Enable SmartDMA receive task
+ */
+ DMA_TASK_ENABLE (FEC_RECV_TASK_NO);
+
+#ifdef DEBUG
+ printf ("mpc8220_fec_init... Done \n");
+#endif
+
+ return 1;
+}
+
+/********************************************************************/
+static void mpc8220_fec_halt (struct eth_device *dev)
+{
+ mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv;
+ int counter = 0xffff;
+
+#ifdef DEBUG
+ if (fec->xcv_type != SEVENWIRE)
+ mpc8220_fec_phydump (dev->name);
+#endif
+
+ /*
+ * mask FEC chip interrupts
+ */
+ fec->eth->imask = 0;
+
+ /*
+ * issue graceful stop command to the FEC transmitter if necessary
+ */
+ fec->eth->x_cntrl |= 0x00000001;
+
+ /*
+ * wait for graceful stop to register
+ */
+ while ((counter--) && (!(fec->eth->ievent & 0x10000000)));
+
+ /*
+ * Disable SmartDMA tasks
+ */
+ DMA_TASK_DISABLE (FEC_XMIT_TASK_NO);
+ DMA_TASK_DISABLE (FEC_RECV_TASK_NO);
+
+ /*
+ * Disable the Ethernet Controller
+ */
+ fec->eth->ecntrl &= 0xfffffffd;
+
+ /*
+ * Clear FIFO status registers
+ */
+ fec->eth->rfifo_status &= 0x00700000;
+ fec->eth->tfifo_status &= 0x00700000;
+
+ fec->eth->reset_cntrl = 0x01000000;
+
+ /*
+ * Issue a reset command to the FEC chip
+ */
+ fec->eth->ecntrl |= 0x1;
+
+ /*
+ * wait at least 16 clock cycles
+ */
+ udelay (10);
+
+#ifdef DEBUG
+ printf ("Ethernet task stopped\n");
+#endif
+}
+
+#ifdef DEBUG
+/********************************************************************/
+
+static void tfifo_print (char *devname, mpc8220_fec_priv * fec)
+{
+ u16 phyAddr = CONFIG_PHY_ADDR;
+ u16 phyStatus;
+
+ if ((fec->eth->tfifo_lrf_ptr != fec->eth->tfifo_lwf_ptr)
+ || (fec->eth->tfifo_rdptr != fec->eth->tfifo_wrptr)) {
+
+ miiphy_read (devname, phyAddr, 0x1, &phyStatus);
+ printf ("\nphyStatus: 0x%04x\n", phyStatus);
+ printf ("ecntrl: 0x%08x\n", fec->eth->ecntrl);
+ printf ("ievent: 0x%08x\n", fec->eth->ievent);
+ printf ("x_status: 0x%08x\n", fec->eth->x_status);
+ printf ("tfifo: status 0x%08x\n", fec->eth->tfifo_status);
+
+ printf (" control 0x%08x\n", fec->eth->tfifo_cntrl);
+ printf (" lrfp 0x%08x\n", fec->eth->tfifo_lrf_ptr);
+ printf (" lwfp 0x%08x\n", fec->eth->tfifo_lwf_ptr);
+ printf (" alarm 0x%08x\n", fec->eth->tfifo_alarm);
+ printf (" readptr 0x%08x\n", fec->eth->tfifo_rdptr);
+ printf (" writptr 0x%08x\n", fec->eth->tfifo_wrptr);
+ }
+}
+
+static void rfifo_print (char *devname, mpc8220_fec_priv * fec)
+{
+ u16 phyAddr = CONFIG_PHY_ADDR;
+ u16 phyStatus;
+
+ if ((fec->eth->rfifo_lrf_ptr != fec->eth->rfifo_lwf_ptr)
+ || (fec->eth->rfifo_rdptr != fec->eth->rfifo_wrptr)) {
+
+ miiphy_read (devname, phyAddr, 0x1, &phyStatus);
+ printf ("\nphyStatus: 0x%04x\n", phyStatus);
+ printf ("ecntrl: 0x%08x\n", fec->eth->ecntrl);
+ printf ("ievent: 0x%08x\n", fec->eth->ievent);
+ printf ("x_status: 0x%08x\n", fec->eth->x_status);
+ printf ("rfifo: status 0x%08x\n", fec->eth->rfifo_status);
+
+ printf (" control 0x%08x\n", fec->eth->rfifo_cntrl);
+ printf (" lrfp 0x%08x\n", fec->eth->rfifo_lrf_ptr);
+ printf (" lwfp 0x%08x\n", fec->eth->rfifo_lwf_ptr);
+ printf (" alarm 0x%08x\n", fec->eth->rfifo_alarm);
+ printf (" readptr 0x%08x\n", fec->eth->rfifo_rdptr);
+ printf (" writptr 0x%08x\n", fec->eth->rfifo_wrptr);
+ }
+}
+#endif /* DEBUG */
+
+/********************************************************************/
+
+static int mpc8220_fec_send (struct eth_device *dev, volatile void *eth_data,
+ int data_length)
+{
+ /*
+ * This routine transmits one frame. This routine only accepts
+ * 6-byte Ethernet addresses.
+ */
+ mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv;
+ FEC_TBD *pTbd;
+
+#ifdef DEBUG
+ printf ("tbd status: 0x%04x\n", fec->tbdBase[0].status);
+ tfifo_print (dev->name, fec);
+#endif
+
+ /*
+ * Clear Tx BD ring at first
+ */
+ mpc8220_fec_tbd_scrub (fec);
+
+ /*
+ * Check for valid length of data.
+ */
+ if ((data_length > 1500) || (data_length <= 0)) {
+ return -1;
+ }
+
+ /*
+ * Check the number of vacant TxBDs.
+ */
+ if (fec->cleanTbdNum < 1) {
+#ifdef DEBUG
+ printf ("No available TxBDs ...\n");
+#endif
+ return -1;
+ }
+
+ /*
+ * Get the first TxBD to send the mac header
+ */
+ pTbd = &fec->tbdBase[fec->tbdIndex];
+ pTbd->dataLength = data_length;
+ pTbd->dataPointer = (u32) eth_data;
+ pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
+ fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM;
+
+#ifdef DEBUG
+ printf ("DMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex);
+#endif
+
+ /*
+ * Kick the MII i/f
+ */
+ if (fec->xcv_type != SEVENWIRE) {
+ u16 phyStatus;
+
+ miiphy_read (dev->name, 0, 0x1, &phyStatus);
+ }
+
+ /*
+ * Enable SmartDMA transmit task
+ */
+
+#ifdef DEBUG
+ tfifo_print (dev->name, fec);
+#endif
+
+ DMA_TASK_ENABLE (FEC_XMIT_TASK_NO);
+
+#ifdef DEBUG
+ tfifo_print (dev->name, fec);
+#endif
+
+#ifdef DEBUG
+ printf ("+");
+#endif
+
+ fec->cleanTbdNum -= 1;
+
+#ifdef DEBUG
+ printf ("smartDMA ethernet Tx task enabled\n");
+#endif
+ /*
+ * wait until frame is sent .
+ */
+ while (pTbd->status & FEC_TBD_READY) {
+ udelay (10);
+#ifdef DEBUG
+ printf ("TDB status = %04x\n", pTbd->status);
+#endif
+ }
+
+ return 0;
+}
+
+
+/********************************************************************/
+static int mpc8220_fec_recv (struct eth_device *dev)
+{
+ /*
+ * This command pulls one frame from the card
+ */
+ mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv;
+ FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex];
+ unsigned long ievent;
+ int frame_length, len = 0;
+ NBUF *frame;
+
+#ifdef DEBUG
+ printf ("mpc8220_fec_recv %d Start...\n", fec->rbdIndex);
+ printf ("-");
+#endif
+
+ /*
+ * Check if any critical events have happened
+ */
+ ievent = fec->eth->ievent;
+ fec->eth->ievent = ievent;
+ if (ievent & 0x20060000) {
+ /* BABT, Rx/Tx FIFO errors */
+ mpc8220_fec_halt (dev);
+ mpc8220_fec_init (dev, NULL);
+ return 0;
+ }
+ if (ievent & 0x80000000) {
+ /* Heartbeat error */
+ fec->eth->x_cntrl |= 0x00000001;
+ }
+ if (ievent & 0x10000000) {
+ /* Graceful stop complete */
+ if (fec->eth->x_cntrl & 0x00000001) {
+ mpc8220_fec_halt (dev);
+ fec->eth->x_cntrl &= ~0x00000001;
+ mpc8220_fec_init (dev, NULL);
+ }
+ }
+
+ if (!(pRbd->status & FEC_RBD_EMPTY)) {
+ if ((pRbd->status & FEC_RBD_LAST)
+ && !(pRbd->status & FEC_RBD_ERR)
+ && ((pRbd->dataLength - 4) > 14)) {
+
+ /*
+ * Get buffer address and size
+ */
+ frame = (NBUF *) pRbd->dataPointer;
+ frame_length = pRbd->dataLength - 4;
+
+#if (0)
+ {
+ int i;
+
+ printf ("recv data hdr:");
+ for (i = 0; i < 14; i++)
+ printf ("%x ", *(frame->head + i));
+ printf ("\n");
+ }
+#endif
+ /*
+ * Fill the buffer and pass it to upper layers
+ */
+/* memcpy(buff, frame->head, 14);
+ memcpy(buff + 14, frame->data, frame_length);*/
+ NetReceive ((volatile uchar *) pRbd->dataPointer,
+ frame_length);
+ len = frame_length;
+ }
+ /*
+ * Reset buffer descriptor as empty
+ */
+ mpc8220_fec_rbd_clean (fec, pRbd);
+ }
+ DMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
+ return len;
+}
+
+
+/********************************************************************/
+int mpc8220_fec_initialize (bd_t * bis)
+{
+ mpc8220_fec_priv *fec;
+
+#ifdef CONFIG_HAS_ETH1
+ mpc8220_fec_priv *fec2;
+#endif
+ struct eth_device *dev;
+ char *tmp, *end;
+ char env_enetaddr[6];
+
+#ifdef CONFIG_HAS_ETH1
+ char env_enet1addr[6];
+#endif
+ int i;
+
+ fec = (mpc8220_fec_priv *) malloc (sizeof (*fec));
+ dev = (struct eth_device *) malloc (sizeof (*dev));
+ memset (dev, 0, sizeof *dev);
+
+ fec->eth = (ethernet_regs *) MMAP_FEC1;
+#ifdef CONFIG_HAS_ETH1
+ fec2 = (mpc8220_fec_priv *) malloc (sizeof (*fec));
+ fec2->eth = (ethernet_regs *) MMAP_FEC2;
+#endif
+ fec->tbdBase = (FEC_TBD *) FEC_BD_BASE;
+ fec->rbdBase =
+ (FEC_RBD *) (FEC_BD_BASE + FEC_TBD_NUM * sizeof (FEC_TBD));
+ fec->xcv_type = MII100;
+
+ dev->priv = (void *) fec;
+ dev->iobase = MMAP_FEC1;
+ dev->init = mpc8220_fec_init;
+ dev->halt = mpc8220_fec_halt;
+ dev->send = mpc8220_fec_send;
+ dev->recv = mpc8220_fec_recv;
+
+ sprintf (dev->name, "FEC ETHERNET");
+ eth_register (dev);
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+ miiphy_register (dev->name,
+ fec8220_miiphy_read, fec8220_miiphy_write);
+#endif
+
+ /*
+ * Try to set the mac address now. The fec mac address is
+ * a garbage after reset. When not using fec for booting
+ * the Linux fec driver will try to work with this garbage.
+ */
+ tmp = getenv ("ethaddr");
+ if (tmp) {
+ for (i = 0; i < 6; i++) {
+ env_enetaddr[i] =
+ tmp ? simple_strtoul (tmp, &end, 16) : 0;
+ if (tmp)
+ tmp = (*end) ? end + 1 : end;
+ }
+ mpc8220_fec_set_hwaddr (fec, env_enetaddr);
+ }
+#ifdef CONFIG_HAS_ETH1
+ tmp = getenv ("eth1addr");
+ if (tmp) {
+ for (i = 0; i < 6; i++) {
+ env_enet1addr[i] =
+ tmp ? simple_strtoul (tmp, &end, 16) : 0;
+ if (tmp)
+ tmp = (*end) ? end + 1 : end;
+ }
+ mpc8220_fec_set_hwaddr (fec2, env_enet1addr);
+ }
+#endif
+
+ return 1;
+}
+
+/* MII-interface related functions */
+/********************************************************************/
+int fec8220_miiphy_read (char *devname, u8 phyAddr, u8 regAddr, u16 * retVal)
+{
+ ethernet_regs *eth = (ethernet_regs *) MMAP_FEC1;
+ u32 reg; /* convenient holder for the PHY register */
+ u32 phy; /* convenient holder for the PHY */
+ int timeout = 0xffff;
+
+ /*
+ * reading from any PHY's register is done by properly
+ * programming the FEC's MII data register.
+ */
+ reg = regAddr << FEC_MII_DATA_RA_SHIFT;
+ phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
+
+ eth->mii_data =
+ (FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA | phy
+ | reg);
+
+ /*
+ * wait for the related interrupt
+ */
+ while ((timeout--) && (!(eth->ievent & 0x00800000)));
+
+ if (timeout == 0) {
+#ifdef DEBUG
+ printf ("Read MDIO failed...\n");
+#endif
+ return -1;
+ }
+
+ /*
+ * clear mii interrupt bit
+ */
+ eth->ievent = 0x00800000;
+
+ /*
+ * it's now safe to read the PHY's register
+ */
+ *retVal = (u16) eth->mii_data;
+
+ return 0;
+}
+
+/********************************************************************/
+int fec8220_miiphy_write (char *devname, u8 phyAddr, u8 regAddr, u16 data)
+{
+ ethernet_regs *eth = (ethernet_regs *) MMAP_FEC1;
+ u32 reg; /* convenient holder for the PHY register */
+ u32 phy; /* convenient holder for the PHY */
+ int timeout = 0xffff;
+
+ reg = regAddr << FEC_MII_DATA_RA_SHIFT;
+ phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
+
+ eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR |
+ FEC_MII_DATA_TA | phy | reg | data);
+
+ /*
+ * wait for the MII interrupt
+ */
+ while ((timeout--) && (!(eth->ievent & 0x00800000)));
+
+ if (timeout == 0) {
+#ifdef DEBUG
+ printf ("Write MDIO failed...\n");
+#endif
+ return -1;
+ }
+
+ /*
+ * clear MII interrupt bit
+ */
+ eth->ievent = 0x00800000;
+
+ return 0;
+}
+
+#ifdef DEBUG
+static u32 local_crc32 (char *string, unsigned int crc_value, int len)
+{
+ int i;
+ char c;
+ unsigned int crc, count;
+
+ /*
+ * crc32 algorithm
+ */
+ /*
+ * crc = 0xffffffff; * The initialized value should be 0xffffffff
+ */
+ crc = crc_value;
+
+ for (i = len; --i >= 0;) {
+ c = *string++;
+ for (count = 0; count < 8; count++) {
+ if ((c & 0x01) ^ (crc & 0x01)) {
+ crc >>= 1;
+ crc = crc ^ 0xedb88320;
+ } else {
+ crc >>= 1;
+ }
+ c >>= 1;
+ }
+ }
+
+ /*
+ * In big endian system, do byte swaping for crc value
+ */
+ return crc;
+}
+#endif /* DEBUG */
+
+#endif /* CONFIG_MPC8220_FEC */
diff --git a/arch/ppc/cpu/mpc8220/fec.h b/arch/ppc/cpu/mpc8220/fec.h
new file mode 100644
index 0000000..a8927fc
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/fec.h
@@ -0,0 +1,283 @@
+/*
+ * (C) Copyright 2003-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * This file is based on mpc4200fec.h
+ * (C) Copyright Motorola, Inc., 2000
+ *
+ * odin ethernet header file
+ */
+
+#ifndef __MPC8220_FEC_H
+#define __MPC8220_FEC_H
+
+#include <common.h>
+#include <mpc8220.h>
+#include "dma.h"
+
+typedef struct ethernet_register_set {
+
+/* [10:2]addr = 00 */
+
+/* Control and status Registers (offset 000-1FF) */
+
+ volatile u32 fec_id; /* MBAR_ETH + 0x000 */
+ volatile u32 ievent; /* MBAR_ETH + 0x004 */
+ volatile u32 imask; /* MBAR_ETH + 0x008 */
+
+ volatile u32 RES0[1]; /* MBAR_ETH + 0x00C */
+ volatile u32 r_des_active; /* MBAR_ETH + 0x010 */
+ volatile u32 x_des_active; /* MBAR_ETH + 0x014 */
+ volatile u32 r_des_active_cl; /* MBAR_ETH + 0x018 */
+ volatile u32 x_des_active_cl; /* MBAR_ETH + 0x01C */
+ volatile u32 ivent_set; /* MBAR_ETH + 0x020 */
+ volatile u32 ecntrl; /* MBAR_ETH + 0x024 */
+
+ volatile u32 RES1[6]; /* MBAR_ETH + 0x028-03C */
+ volatile u32 mii_data; /* MBAR_ETH + 0x040 */
+ volatile u32 mii_speed; /* MBAR_ETH + 0x044 */
+ volatile u32 mii_status; /* MBAR_ETH + 0x048 */
+
+ volatile u32 RES2[5]; /* MBAR_ETH + 0x04C-05C */
+ volatile u32 mib_data; /* MBAR_ETH + 0x060 */
+ volatile u32 mib_control; /* MBAR_ETH + 0x064 */
+
+ volatile u32 RES3[6]; /* MBAR_ETH + 0x068-7C */
+ volatile u32 r_activate; /* MBAR_ETH + 0x080 */
+ volatile u32 r_cntrl; /* MBAR_ETH + 0x084 */
+ volatile u32 r_hash; /* MBAR_ETH + 0x088 */
+ volatile u32 r_data; /* MBAR_ETH + 0x08C */
+ volatile u32 ar_done; /* MBAR_ETH + 0x090 */
+ volatile u32 r_test; /* MBAR_ETH + 0x094 */
+ volatile u32 r_mib; /* MBAR_ETH + 0x098 */
+ volatile u32 r_da_low; /* MBAR_ETH + 0x09C */
+ volatile u32 r_da_high; /* MBAR_ETH + 0x0A0 */
+
+ volatile u32 RES4[7]; /* MBAR_ETH + 0x0A4-0BC */
+ volatile u32 x_activate; /* MBAR_ETH + 0x0C0 */
+ volatile u32 x_cntrl; /* MBAR_ETH + 0x0C4 */
+ volatile u32 backoff; /* MBAR_ETH + 0x0C8 */
+ volatile u32 x_data; /* MBAR_ETH + 0x0CC */
+ volatile u32 x_status; /* MBAR_ETH + 0x0D0 */
+ volatile u32 x_mib; /* MBAR_ETH + 0x0D4 */
+ volatile u32 x_test; /* MBAR_ETH + 0x0D8 */
+ volatile u32 fdxfc_da1; /* MBAR_ETH + 0x0DC */
+ volatile u32 fdxfc_da2; /* MBAR_ETH + 0x0E0 */
+ volatile u32 paddr1; /* MBAR_ETH + 0x0E4 */
+ volatile u32 paddr2; /* MBAR_ETH + 0x0E8 */
+ volatile u32 op_pause; /* MBAR_ETH + 0x0EC */
+
+ volatile u32 RES5[4]; /* MBAR_ETH + 0x0F0-0FC */
+ volatile u32 instr_reg; /* MBAR_ETH + 0x100 */
+ volatile u32 context_reg; /* MBAR_ETH + 0x104 */
+ volatile u32 test_cntrl; /* MBAR_ETH + 0x108 */
+ volatile u32 acc_reg; /* MBAR_ETH + 0x10C */
+ volatile u32 ones; /* MBAR_ETH + 0x110 */
+ volatile u32 zeros; /* MBAR_ETH + 0x114 */
+ volatile u32 iaddr1; /* MBAR_ETH + 0x118 */
+ volatile u32 iaddr2; /* MBAR_ETH + 0x11C */
+ volatile u32 gaddr1; /* MBAR_ETH + 0x120 */
+ volatile u32 gaddr2; /* MBAR_ETH + 0x124 */
+ volatile u32 random; /* MBAR_ETH + 0x128 */
+ volatile u32 rand1; /* MBAR_ETH + 0x12C */
+ volatile u32 tmp; /* MBAR_ETH + 0x130 */
+
+ volatile u32 RES6[3]; /* MBAR_ETH + 0x134-13C */
+ volatile u32 fifo_id; /* MBAR_ETH + 0x140 */
+ volatile u32 x_wmrk; /* MBAR_ETH + 0x144 */
+ volatile u32 fcntrl; /* MBAR_ETH + 0x148 */
+ volatile u32 r_bound; /* MBAR_ETH + 0x14C */
+ volatile u32 r_fstart; /* MBAR_ETH + 0x150 */
+ volatile u32 r_count; /* MBAR_ETH + 0x154 */
+ volatile u32 r_lag; /* MBAR_ETH + 0x158 */
+ volatile u32 r_read; /* MBAR_ETH + 0x15C */
+ volatile u32 r_write; /* MBAR_ETH + 0x160 */
+ volatile u32 x_count; /* MBAR_ETH + 0x164 */
+ volatile u32 x_lag; /* MBAR_ETH + 0x168 */
+ volatile u32 x_retry; /* MBAR_ETH + 0x16C */
+ volatile u32 x_write; /* MBAR_ETH + 0x170 */
+ volatile u32 x_read; /* MBAR_ETH + 0x174 */
+
+ volatile u32 RES7[2]; /* MBAR_ETH + 0x178-17C */
+ volatile u32 fm_cntrl; /* MBAR_ETH + 0x180 */
+ volatile u32 rfifo_data; /* MBAR_ETH + 0x184 */
+ volatile u32 rfifo_status; /* MBAR_ETH + 0x188 */
+ volatile u32 rfifo_cntrl; /* MBAR_ETH + 0x18C */
+ volatile u32 rfifo_lrf_ptr; /* MBAR_ETH + 0x190 */
+ volatile u32 rfifo_lwf_ptr; /* MBAR_ETH + 0x194 */
+ volatile u32 rfifo_alarm; /* MBAR_ETH + 0x198 */
+ volatile u32 rfifo_rdptr; /* MBAR_ETH + 0x19C */
+ volatile u32 rfifo_wrptr; /* MBAR_ETH + 0x1A0 */
+ volatile u32 tfifo_data; /* MBAR_ETH + 0x1A4 */
+ volatile u32 tfifo_status; /* MBAR_ETH + 0x1A8 */
+ volatile u32 tfifo_cntrl; /* MBAR_ETH + 0x1AC */
+ volatile u32 tfifo_lrf_ptr; /* MBAR_ETH + 0x1B0 */
+ volatile u32 tfifo_lwf_ptr; /* MBAR_ETH + 0x1B4 */
+ volatile u32 tfifo_alarm; /* MBAR_ETH + 0x1B8 */
+ volatile u32 tfifo_rdptr; /* MBAR_ETH + 0x1BC */
+ volatile u32 tfifo_wrptr; /* MBAR_ETH + 0x1C0 */
+
+ volatile u32 reset_cntrl; /* MBAR_ETH + 0x1C4 */
+ volatile u32 xmit_fsm; /* MBAR_ETH + 0x1C8 */
+
+ volatile u32 RES8[3]; /* MBAR_ETH + 0x1CC-1D4 */
+ volatile u32 rdes_data0; /* MBAR_ETH + 0x1D8 */
+ volatile u32 rdes_data1; /* MBAR_ETH + 0x1DC */
+ volatile u32 r_length; /* MBAR_ETH + 0x1E0 */
+ volatile u32 x_length; /* MBAR_ETH + 0x1E4 */
+ volatile u32 x_addr; /* MBAR_ETH + 0x1E8 */
+ volatile u32 cdes_data; /* MBAR_ETH + 0x1EC */
+ volatile u32 status; /* MBAR_ETH + 0x1F0 */
+ volatile u32 dma_control; /* MBAR_ETH + 0x1F4 */
+ volatile u32 des_cmnd; /* MBAR_ETH + 0x1F8 */
+ volatile u32 data; /* MBAR_ETH + 0x1FC */
+
+ /* MIB COUNTERS (Offset 200-2FF) */
+
+ volatile u32 rmon_t_drop; /* MBAR_ETH + 0x200 */
+ volatile u32 rmon_t_packets; /* MBAR_ETH + 0x204 */
+ volatile u32 rmon_t_bc_pkt; /* MBAR_ETH + 0x208 */
+ volatile u32 rmon_t_mc_pkt; /* MBAR_ETH + 0x20C */
+ volatile u32 rmon_t_crc_align; /* MBAR_ETH + 0x210 */
+ volatile u32 rmon_t_undersize; /* MBAR_ETH + 0x214 */
+ volatile u32 rmon_t_oversize; /* MBAR_ETH + 0x218 */
+ volatile u32 rmon_t_frag; /* MBAR_ETH + 0x21C */
+ volatile u32 rmon_t_jab; /* MBAR_ETH + 0x220 */
+ volatile u32 rmon_t_col; /* MBAR_ETH + 0x224 */
+ volatile u32 rmon_t_p64; /* MBAR_ETH + 0x228 */
+ volatile u32 rmon_t_p65to127; /* MBAR_ETH + 0x22C */
+ volatile u32 rmon_t_p128to255; /* MBAR_ETH + 0x230 */
+ volatile u32 rmon_t_p256to511; /* MBAR_ETH + 0x234 */
+ volatile u32 rmon_t_p512to1023; /* MBAR_ETH + 0x238 */
+ volatile u32 rmon_t_p1024to2047;/* MBAR_ETH + 0x23C */
+ volatile u32 rmon_t_p_gte2048; /* MBAR_ETH + 0x240 */
+ volatile u32 rmon_t_octets; /* MBAR_ETH + 0x244 */
+ volatile u32 ieee_t_drop; /* MBAR_ETH + 0x248 */
+ volatile u32 ieee_t_frame_ok; /* MBAR_ETH + 0x24C */
+ volatile u32 ieee_t_1col; /* MBAR_ETH + 0x250 */
+ volatile u32 ieee_t_mcol; /* MBAR_ETH + 0x254 */
+ volatile u32 ieee_t_def; /* MBAR_ETH + 0x258 */
+ volatile u32 ieee_t_lcol; /* MBAR_ETH + 0x25C */
+ volatile u32 ieee_t_excol; /* MBAR_ETH + 0x260 */
+ volatile u32 ieee_t_macerr; /* MBAR_ETH + 0x264 */
+ volatile u32 ieee_t_cserr; /* MBAR_ETH + 0x268 */
+ volatile u32 ieee_t_sqe; /* MBAR_ETH + 0x26C */
+ volatile u32 t_fdxfc; /* MBAR_ETH + 0x270 */
+ volatile u32 ieee_t_octets_ok; /* MBAR_ETH + 0x274 */
+
+ volatile u32 RES9[2]; /* MBAR_ETH + 0x278-27C */
+ volatile u32 rmon_r_drop; /* MBAR_ETH + 0x280 */
+ volatile u32 rmon_r_packets; /* MBAR_ETH + 0x284 */
+ volatile u32 rmon_r_bc_pkt; /* MBAR_ETH + 0x288 */
+ volatile u32 rmon_r_mc_pkt; /* MBAR_ETH + 0x28C */
+ volatile u32 rmon_r_crc_align; /* MBAR_ETH + 0x290 */
+ volatile u32 rmon_r_undersize; /* MBAR_ETH + 0x294 */
+ volatile u32 rmon_r_oversize; /* MBAR_ETH + 0x298 */
+ volatile u32 rmon_r_frag; /* MBAR_ETH + 0x29C */
+ volatile u32 rmon_r_jab; /* MBAR_ETH + 0x2A0 */
+
+ volatile u32 rmon_r_resvd_0; /* MBAR_ETH + 0x2A4 */
+
+ volatile u32 rmon_r_p64; /* MBAR_ETH + 0x2A8 */
+ volatile u32 rmon_r_p65to127; /* MBAR_ETH + 0x2AC */
+ volatile u32 rmon_r_p128to255; /* MBAR_ETH + 0x2B0 */
+ volatile u32 rmon_r_p256to511; /* MBAR_ETH + 0x2B4 */
+ volatile u32 rmon_r_p512to1023; /* MBAR_ETH + 0x2B8 */
+ volatile u32 rmon_r_p1024to2047;/* MBAR_ETH + 0x2BC */
+ volatile u32 rmon_r_p_gte2048; /* MBAR_ETH + 0x2C0 */
+ volatile u32 rmon_r_octets; /* MBAR_ETH + 0x2C4 */
+ volatile u32 ieee_r_drop; /* MBAR_ETH + 0x2C8 */
+ volatile u32 ieee_r_frame_ok; /* MBAR_ETH + 0x2CC */
+ volatile u32 ieee_r_crc; /* MBAR_ETH + 0x2D0 */
+ volatile u32 ieee_r_align; /* MBAR_ETH + 0x2D4 */
+ volatile u32 r_macerr; /* MBAR_ETH + 0x2D8 */
+ volatile u32 r_fdxfc; /* MBAR_ETH + 0x2DC */
+ volatile u32 ieee_r_octets_ok; /* MBAR_ETH + 0x2E0 */
+
+ volatile u32 RES10[6]; /* MBAR_ETH + 0x2E4-2FC */
+
+ volatile u32 RES11[64]; /* MBAR_ETH + 0x300-3FF */
+} ethernet_regs;
+
+/* Receive & Transmit Buffer Descriptor definitions */
+typedef struct BufferDescriptor {
+ u16 status;
+ u16 dataLength;
+ u32 dataPointer;
+} FEC_RBD;
+
+typedef struct {
+ u16 status;
+ u16 dataLength;
+ u32 dataPointer;
+} FEC_TBD;
+
+/* private structure */
+typedef enum {
+ SEVENWIRE, /* 7-wire */
+ MII10, /* MII 10Mbps */
+ MII100 /* MII 100Mbps */
+} xceiver_type;
+
+typedef struct {
+ ethernet_regs *eth;
+ xceiver_type xcv_type; /* transceiver type */
+ FEC_RBD *rbdBase; /* RBD ring */
+ FEC_TBD *tbdBase; /* TBD ring */
+ u16 rbdIndex; /* next receive BD to read */
+ u16 tbdIndex; /* next transmit BD to send */
+ u16 usedTbdIndex; /* next transmit BD to clean */
+ u16 cleanTbdNum; /* the number of available transmit BDs */
+} mpc8220_fec_priv;
+
+/* Ethernet parameter area */
+#define FEC_TBD_BASE (FEC_PARAM_BASE + 0x00)
+#define FEC_TBD_NEXT (FEC_PARAM_BASE + 0x04)
+#define FEC_RBD_BASE (FEC_PARAM_BASE + 0x08)
+#define FEC_RBD_NEXT (FEC_PARAM_BASE + 0x0c)
+
+/* BD Numer definitions */
+#define FEC_TBD_NUM 48 /* The user can adjust this value */
+#define FEC_RBD_NUM 32 /* The user can adjust this value */
+
+/* packet size limit */
+#define FEC_MAX_PKT_SIZE 1536
+
+/* RBD bits definitions */
+#define FEC_RBD_EMPTY 0x8000 /* Buffer is empty */
+#define FEC_RBD_WRAP 0x2000 /* Last BD in ring */
+#define FEC_RBD_INT 0x1000 /* Interrupt */
+#define FEC_RBD_LAST 0x0800 /* Buffer is last in frame(useless) */
+#define FEC_RBD_MISS 0x0100 /* Miss bit for prom mode */
+#define FEC_RBD_BC 0x0080 /* The received frame is broadcast frame */
+#define FEC_RBD_MC 0x0040 /* The received frame is multicast frame */
+#define FEC_RBD_LG 0x0020 /* Frame length violation */
+#define FEC_RBD_NO 0x0010 /* Nonoctet align frame */
+#define FEC_RBD_SH 0x0008 /* Short frame */
+#define FEC_RBD_CR 0x0004 /* CRC error */
+#define FEC_RBD_OV 0x0002 /* Receive FIFO overrun */
+#define FEC_RBD_TR 0x0001 /* Frame is truncated */
+#define FEC_RBD_ERR (FEC_RBD_LG | FEC_RBD_NO | FEC_RBD_CR | \
+ FEC_RBD_OV | FEC_RBD_TR)
+
+/* TBD bits definitions */
+#define FEC_TBD_READY 0x8000 /* Buffer is ready */
+#define FEC_TBD_WRAP 0x2000 /* Last BD in ring */
+#define FEC_TBD_INT 0x1000 /* Interrupt */
+#define FEC_TBD_LAST 0x0800 /* Buffer is last in frame */
+#define FEC_TBD_TC 0x0400 /* Transmit the CRC */
+#define FEC_TBD_ABC 0x0200 /* Append bad CRC */
+
+/* MII-related definitios */
+#define FEC_MII_DATA_ST 0x40000000 /* Start of frame delimiter */
+#define FEC_MII_DATA_OP_RD 0x20000000 /* Perform a read operation */
+#define FEC_MII_DATA_OP_WR 0x10000000 /* Perform a write operation */
+#define FEC_MII_DATA_PA_MSK 0x0f800000 /* PHY Address field mask */
+#define FEC_MII_DATA_RA_MSK 0x007c0000 /* PHY Register field mask */
+#define FEC_MII_DATA_TA 0x00020000 /* Turnaround */
+#define FEC_MII_DATA_DATAMSK 0x0000ffff /* PHY data field */
+
+#define FEC_MII_DATA_RA_SHIFT 18 /* MII Register address bits */
+#define FEC_MII_DATA_PA_SHIFT 23 /* MII PHY address bits */
+
+#endif /* __MPC8220_FEC_H */
diff --git a/arch/ppc/cpu/mpc8220/fec_dma_tasks.S b/arch/ppc/cpu/mpc8220/fec_dma_tasks.S
new file mode 100644
index 0000000..3f8a03b
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/fec_dma_tasks.S
@@ -0,0 +1,363 @@
+/*
+ * Copyright (C) 2004, Freescale Semiconductor, Inc.
+ *
+ * This file contains microcode for the FEC controller of the MPC8220.
+ */
+
+#include <config.h>
+
+#if defined(CONFIG_MPC8220)
+
+/* sas/sccg, gas target */
+.section smartdmaInitData,"aw",@progbits /* Initialized data for task variables */
+.section smartdmaTaskTable,"aw",@progbits /* Task tables */
+.align 9
+.globl taskTable
+taskTable:
+.globl scEthernetRecv_Entry
+scEthernetRecv_Entry: /* Task 0 */
+.long scEthernetRecv_TDT - taskTable /* Task 0 Descriptor Table */
+.long scEthernetRecv_TDT - taskTable + 0x00000094
+.long scEthernetRecv_VarTab - taskTable /* Task 0 Variable Table */
+.long scEthernetRecv_FDT - taskTable + 0x03 /* Task 0 Function Descriptor Table & Flags */
+.long 0x00000000
+.long 0x00000000
+.long scEthernetRecv_CSave - taskTable /* Task 0 context save space */
+.long 0xf0000000
+.globl scEthernetXmit_Entry
+scEthernetXmit_Entry: /* Task 1 */
+.long scEthernetXmit_TDT - taskTable /* Task 1 Descriptor Table */
+.long scEthernetXmit_TDT - taskTable + 0x000000e0
+.long scEthernetXmit_VarTab - taskTable /* Task 1 Variable Table */
+.long scEthernetXmit_FDT - taskTable + 0x03 /* Task 1 Function Descriptor Table & Flags */
+.long 0x00000000
+.long 0x00000000
+.long scEthernetXmit_CSave - taskTable /* Task 1 context save space */
+.long 0xf0000000
+
+
+.globl scEthernetRecv_TDT
+scEthernetRecv_TDT: /* Task 0 Descriptor Table */
+.long 0xc4c50000 /* 0000(153): LCDEXT: idx0 = var9 + var10; idx0 once var0; idx0 += inc0 */
+.long 0x84c5e000 /* 0004(153): LCD: idx1 = var9 + var11; ; idx1 += inc0 */
+.long 0x10001f08 /* 0008(156): DRD1A: var7 = idx1; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x10000380 /* 000C(157): DRD1A: var0 = *idx0; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x00000f88 /* 0010(158): DRD1A: var3 = *idx1; FN=0 init=0 WS=0 RS=0 */
+.long 0x81980000 /* 0014(162): LCD: idx0 = var3; idx0 once var0; idx0 += inc0 */
+.long 0x10000780 /* 0018(164): DRD1A: var1 = *idx0; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x60000000 /* 001C(165): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT init=0 WS=0 RS=0 */
+.long 0x010cf04c /* 0020(165): DRD2B1: var4 = EU3(); EU3(var1,var12) */
+.long 0x82180349 /* 0024(169): LCD: idx0 = var4; idx0 != var13; idx0 += inc1 */
+.long 0x81c68004 /* 0028(172): LCD: idx1 = var3 + var13 + 4; idx1 once var0; idx1 += inc0 */
+.long 0x70000000 /* 002C(174): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT MORE init=0 WS=0 RS=0 */
+.long 0x018cf04e /* 0030(174): DRD2B1: var6 = EU3(); EU3(var1,var14) */
+.long 0x70000000 /* 0034(175): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT MORE init=0 WS=0 RS=0 */
+.long 0x020cf04f /* 0038(175): DRD2B1: var8 = EU3(); EU3(var1,var15) */
+.long 0x00000b88 /* 003C(176): DRD1A: var2 = *idx1; FN=0 init=0 WS=0 RS=0 */
+.long 0x80025184 /* 0040(205): LCDEXT: idx1 = 0xf0009184; ; */
+.long 0x86810412 /* 0044(205): LCD: idx2 = var13, idx3 = var2; idx2 < var16; idx2 += inc2, idx3 += inc2 */
+.long 0x0200cf88 /* 0048(209): DRD1A: *idx3 = *idx1; FN=0 init=16 WS=0 RS=0 */
+.long 0x80025184 /* 004C(217): LCDEXT: idx1 = 0xf0009184; ; */
+.long 0x8681845b /* 0050(217): LCD: idx2 = var13, idx3 = var3; idx2 < var17; idx2 += inc3, idx3 += inc3 */
+.long 0x0000cf88 /* 0054(221): DRD1A: *idx3 = *idx1; FN=0 init=0 WS=0 RS=0 */
+.long 0xc31883a4 /* 0058(225): LCDEXT: idx1 = var6; idx1 == var14; idx1 += inc4 */
+.long 0x80190000 /* 005C(225): LCD: idx2 = var0; idx2 once var0; idx2 += inc0 */
+.long 0x04008468 /* 0060(227): DRD1A: idx1 = var13; FN=0 INT init=0 WS=0 RS=0 */
+.long 0xc4038360 /* 0064(232): LCDEXT: idx1 = var8, idx2 = var7; idx1 == var13; idx1 += inc4, idx2 += inc0 */
+.long 0x81c50000 /* 0068(233): LCD: idx3 = var3 + var10; idx3 once var0; idx3 += inc0 */
+.long 0x1000cb18 /* 006C(235): DRD1A: *idx2 = idx3; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x00000f18 /* 0070(236): DRD1A: var3 = idx3; FN=0 init=0 WS=0 RS=0 */
+.long 0xc418836d /* 0074(238): LCDEXT: idx1 = var8; idx1 > var13; idx1 += inc5 */
+.long 0x83990000 /* 0078(238): LCD: idx2 = var7; idx2 once var0; idx2 += inc0 */
+.long 0x10000c00 /* 007C(240): DRD1A: var3 = var0; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x0000c800 /* 0080(241): DRD1A: *idx2 = var0; FN=0 init=0 WS=0 RS=0 */
+.long 0x81988000 /* 0084(245): LCD: idx1 = var3; idx1 once var0; idx1 += inc0 */
+.long 0x10000788 /* 0088(247): DRD1A: var1 = *idx1; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x60000000 /* 008C(248): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT init=0 WS=0 RS=0 */
+.long 0x080cf04c /* 0090(248): DRD2B1: idx0 = EU3(); EU3(var1,var12) */
+.long 0x000001f8 /* 0094(:0): NOP */
+
+
+.globl scEthernetXmit_TDT
+scEthernetXmit_TDT: /* Task 1 Descriptor Table */
+.long 0x80095b00 /* 0000(280): LCDEXT: idx0 = 0xf0025b00; ; */
+.long 0x85c60004 /* 0004(280): LCD: idx1 = var11 + var12 + 4; idx1 once var0; idx1 += inc0 */
+.long 0x10002308 /* 0008(283): DRD1A: var8 = idx1; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x10000f88 /* 000C(284): DRD1A: var3 = *idx1; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x00000380 /* 0010(285): DRD1A: var0 = *idx0; FN=0 init=0 WS=0 RS=0 */
+.long 0x81980000 /* 0014(288): LCD: idx0 = var3; idx0 once var0; idx0 += inc0 */
+.long 0x10000780 /* 0018(290): DRD1A: var1 = *idx0; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x60000000 /* 001C(291): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT init=0 WS=0 RS=0 */
+.long 0x024cf04d /* 0020(291): DRD2B1: var9 = EU3(); EU3(var1,var13) */
+.long 0x84980309 /* 0024(294): LCD: idx0 = var9; idx0 != var12; idx0 += inc1 */
+.long 0xc0004003 /* 0028(297): LCDEXT: idx1 = 0x00000003; ; */
+.long 0x81c60004 /* 002C(297): LCD: idx2 = var3 + var12 + 4; idx2 once var0; idx2 += inc0 */
+.long 0x70000000 /* 0030(299): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT MORE init=0 WS=0 RS=0 */
+.long 0x010cf04e /* 0034(299): DRD2B1: var4 = EU3(); EU3(var1,var14) */
+.long 0x70000000 /* 0038(300): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT MORE init=0 WS=0 RS=0 */
+.long 0x014cf04f /* 003C(300): DRD2B1: var5 = EU3(); EU3(var1,var15) */
+.long 0x70000000 /* 0040(301): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT MORE init=0 WS=0 RS=0 */
+.long 0x028cf050 /* 0044(301): DRD2B1: var10 = EU3(); EU3(var1,var16) */
+.long 0x70000000 /* 0048(302): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT MORE init=0 WS=0 RS=0 */
+.long 0x018cf051 /* 004C(302): DRD2B1: var6 = EU3(); EU3(var1,var17) */
+.long 0x10000b90 /* 0050(303): DRD1A: var2 = *idx2; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x60000000 /* 0054(304): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT init=0 WS=0 RS=0 */
+.long 0x01ccf0a1 /* 0058(304): DRD2B1: var7 = EU3(); EU3(var2,idx1) */
+.long 0xc2988312 /* 005C(308): LCDEXT: idx1 = var5; idx1 > var12; idx1 += inc2 */
+.long 0x83490000 /* 0060(308): LCD: idx2 = var6 + var18; idx2 once var0; idx2 += inc0 */
+.long 0x00001b10 /* 0064(310): DRD1A: var6 = idx2; FN=0 init=0 WS=0 RS=0 */
+.long 0x800251a4 /* 0068(315): LCDEXT: idx1 = 0xf00091a4; ; */
+.long 0xc30104dc /* 006C(315): LCDEXT: idx2 = var6, idx3 = var2; idx2 >= var19; idx2 += inc3, idx3 += inc4 */
+.long 0x839a032d /* 0070(316): LCD: idx4 = var7; idx4 == var12; idx4 += inc5 */
+.long 0x0220c798 /* 0074(321): DRD1A: *idx1 = *idx3; FN=0 init=17 WS=0 RS=0 */
+.long 0x800251a4 /* 0078(329): LCDEXT: idx1 = 0xf00091a4; ; */
+.long 0x99198337 /* 007C(329): LCD: idx2 = idx2, idx3 = idx3; idx2 > var12; idx2 += inc6, idx3 += inc7 */
+.long 0x022ac798 /* 0080(333): DRD1A: *idx1 = *idx3; FN=0 init=17 WS=1 RS=1 */
+.long 0x800251a4 /* 0084(350): LCDEXT: idx1 = 0xf00091a4; ; */
+.long 0xc1430000 /* 0088(350): LCDEXT: idx2 = var2 + var6; idx2 once var0; idx2 += inc0 */
+.long 0x82998312 /* 008C(351): LCD: idx3 = var5; idx3 > var12; idx3 += inc2 */
+.long 0x0a2ac790 /* 0090(354): DRD1A: *idx1 = *idx2; FN=0 TFD init=17 WS=1 RS=1 */
+.long 0x81988000 /* 0094(359): LCD: idx1 = var3; idx1 once var0; idx1 += inc0 */
+.long 0x60000002 /* 0098(361): DRD2A: EU0=0 EU1=0 EU2=0 EU3=2 EXT init=0 WS=0 RS=0 */
+.long 0x0c4cfc4d /* 009C(361): DRD2B1: *idx1 = EU3(); EU3(*idx1,var13) */
+.long 0xc21883ad /* 00A0(365): LCDEXT: idx1 = var4; idx1 == var14; idx1 += inc5 */
+.long 0x80190000 /* 00A4(365): LCD: idx2 = var0; idx2 once var0; idx2 += inc0 */
+.long 0x04008460 /* 00A8(367): DRD1A: idx1 = var12; FN=0 INT init=0 WS=0 RS=0 */
+.long 0xc4052305 /* 00AC(371): LCDEXT: idx1 = var8, idx2 = var10; idx2 == var12; idx1 += inc0, idx2 += inc5 */
+.long 0x81ca0000 /* 00B0(372): LCD: idx3 = var3 + var20; idx3 once var0; idx3 += inc0 */
+.long 0x1000c718 /* 00B4(374): DRD1A: *idx1 = idx3; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x00000f18 /* 00B8(375): DRD1A: var3 = idx3; FN=0 init=0 WS=0 RS=0 */
+.long 0xc4188000 /* 00BC(378): LCDEXT: idx1 = var8; idx1 once var0; idx1 += inc0 */
+.long 0x85190312 /* 00C0(378): LCD: idx2 = var10; idx2 > var12; idx2 += inc2 */
+.long 0x10000c00 /* 00C4(380): DRD1A: var3 = var0; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x1000c400 /* 00C8(381): DRD1A: *idx1 = var0; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x00008860 /* 00CC(382): DRD1A: idx2 = var12; FN=0 init=0 WS=0 RS=0 */
+.long 0x81988000 /* 00D0(386): LCD: idx1 = var3; idx1 once var0; idx1 += inc0 */
+.long 0x10000788 /* 00D4(388): DRD1A: var1 = *idx1; FN=0 MORE init=0 WS=0 RS=0 */
+.long 0x60000000 /* 00D8(389): DRD2A: EU0=0 EU1=0 EU2=0 EU3=0 EXT init=0 WS=0 RS=0 */
+.long 0x080cf04d /* 00DC(389): DRD2B1: idx0 = EU3(); EU3(var1,var13) */
+.long 0x000001f8 /* 00E0(:0): NOP */
+
+.align 8
+
+.globl scEthernetRecv_VarTab
+scEthernetRecv_VarTab: /* Task 0 Variable Table */
+.long 0x00000000 /* var[0] */
+.long 0x00000000 /* var[1] */
+.long 0x00000000 /* var[2] */
+.long 0x00000000 /* var[3] */
+.long 0x00000000 /* var[4] */
+.long 0x00000000 /* var[5] */
+.long 0x00000000 /* var[6] */
+.long 0x00000000 /* var[7] */
+.long 0x00000000 /* var[8] */
+.long 0xf0025b00 /* var[9] */
+.long 0x00000008 /* var[10] */
+.long 0x0000000c /* var[11] */
+.long 0x80000000 /* var[12] */
+.long 0x00000000 /* var[13] */
+.long 0x10000000 /* var[14] */
+.long 0x20000000 /* var[15] */
+.long 0x00000800 /* var[16] */
+.long 0x00000001 /* var[17] */
+.long 0x00000000 /* var[18] */
+.long 0x00000000 /* var[19] */
+.long 0x00000000 /* var[20] */
+.long 0x00000000 /* var[21] */
+.long 0x00000000 /* var[22] */
+.long 0x00000000 /* var[23] */
+.long 0x00000000 /* inc[0] */
+.long 0x60000000 /* inc[1] */
+.long 0x20000004 /* inc[2] */
+.long 0x20000001 /* inc[3] */
+.long 0x80000000 /* inc[4] */
+.long 0x40000000 /* inc[5] */
+.long 0x00000000 /* inc[6] */
+.long 0x00000000 /* inc[7] */
+
+.align 8
+
+.globl scEthernetXmit_VarTab
+scEthernetXmit_VarTab: /* Task 1 Variable Table */
+.long 0x00000000 /* var[0] */
+.long 0x00000000 /* var[1] */
+.long 0x00000000 /* var[2] */
+.long 0x00000000 /* var[3] */
+.long 0x00000000 /* var[4] */
+.long 0x00000000 /* var[5] */
+.long 0x00000000 /* var[6] */
+.long 0x00000000 /* var[7] */
+.long 0x00000000 /* var[8] */
+.long 0x00000000 /* var[9] */
+.long 0x00000000 /* var[10] */
+.long 0xf0025b00 /* var[11] */
+.long 0x00000000 /* var[12] */
+.long 0x80000000 /* var[13] */
+.long 0x10000000 /* var[14] */
+.long 0x08000000 /* var[15] */
+.long 0x20000000 /* var[16] */
+.long 0x0000ffff /* var[17] */
+.long 0xffffffff /* var[18] */
+.long 0x00000004 /* var[19] */
+.long 0x00000008 /* var[20] */
+.long 0x00000000 /* var[21] */
+.long 0x00000000 /* var[22] */
+.long 0x00000000 /* var[23] */
+.long 0x00000000 /* inc[0] */
+.long 0x60000000 /* inc[1] */
+.long 0x40000000 /* inc[2] */
+.long 0xc000fffc /* inc[3] */
+.long 0xe0000004 /* inc[4] */
+.long 0x80000000 /* inc[5] */
+.long 0x4000ffff /* inc[6] */
+.long 0xe0000001 /* inc[7] */
+
+.align 8
+
+.globl scEthernetRecv_FDT
+scEthernetRecv_FDT: /* Task 0 Function Descriptor Table */
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x21800000 /* and(), EU# 3 */
+.long 0x21e00000 /* or(), EU# 3 */
+.long 0x21400000 /* andn(), EU# 3 */
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+
+.align 8
+
+.globl scEthernetXmit_FDT
+scEthernetXmit_FDT: /* Task 1 Function Descriptor Table */
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x21800000 /* and(), EU# 3 */
+.long 0x21e00000 /* or(), EU# 3 */
+.long 0x21400000 /* andn(), EU# 3 */
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+.long 0x00000000
+
+
+.globl scEthernetRecv_CSave
+scEthernetRecv_CSave: /* Task 0 context save space */
+.space 128, 0x0
+
+
+.globl scEthernetXmit_CSave
+scEthernetXmit_CSave: /* Task 1 context save space */
+.space 128, 0x0
+
+#endif
diff --git a/arch/ppc/cpu/mpc8220/i2c.c b/arch/ppc/cpu/mpc8220/i2c.c
new file mode 100644
index 0000000..76ecdf1
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/i2c.c
@@ -0,0 +1,390 @@
+/*
+ * (C) Copyright 2004, Freescale, Inc
+ * TsiChung Liew, Tsi-Chung.Liew@freescale.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_HARD_I2C
+
+#include <mpc8220.h>
+#include <i2c.h>
+
+typedef struct mpc8220_i2c {
+ volatile u32 adr; /* I2Cn + 0x00 */
+ volatile u32 fdr; /* I2Cn + 0x04 */
+ volatile u32 cr; /* I2Cn + 0x08 */
+ volatile u32 sr; /* I2Cn + 0x0C */
+ volatile u32 dr; /* I2Cn + 0x10 */
+} i2c_t;
+
+/* I2Cn control register bits */
+#define I2C_EN 0x80
+#define I2C_IEN 0x40
+#define I2C_STA 0x20
+#define I2C_TX 0x10
+#define I2C_TXAK 0x08
+#define I2C_RSTA 0x04
+#define I2C_INIT_MASK (I2C_EN | I2C_STA | I2C_TX | I2C_RSTA)
+
+/* I2Cn status register bits */
+#define I2C_CF 0x80
+#define I2C_AAS 0x40
+#define I2C_BB 0x20
+#define I2C_AL 0x10
+#define I2C_SRW 0x04
+#define I2C_IF 0x02
+#define I2C_RXAK 0x01
+
+#define I2C_TIMEOUT 100
+#define I2C_RETRIES 1
+
+struct mpc8220_i2c_tap {
+ int scl2tap;
+ int tap2tap;
+};
+
+static int mpc_reg_in (volatile u32 * reg);
+static void mpc_reg_out (volatile u32 * reg, int val, int mask);
+static int wait_for_bb (void);
+static int wait_for_pin (int *status);
+static int do_address (uchar chip, char rdwr_flag);
+static int send_bytes (uchar chip, char *buf, int len);
+static int receive_bytes (uchar chip, char *buf, int len);
+static int mpc_get_fdr (int);
+
+static int mpc_reg_in (volatile u32 * reg)
+{
+ int ret;
+ ret = *reg >> 24;
+ __asm__ __volatile__ ("eieio");
+ return ret;
+}
+
+static void mpc_reg_out (volatile u32 * reg, int val, int mask)
+{
+ int tmp;
+
+ if (!mask) {
+ *reg = val << 24;
+ } else {
+ tmp = mpc_reg_in (reg);
+ *reg = ((tmp & ~mask) | (val & mask)) << 24;
+ }
+ __asm__ __volatile__ ("eieio");
+
+ return;
+}
+
+static int wait_for_bb (void)
+{
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int timeout = I2C_TIMEOUT;
+ int status;
+
+ status = mpc_reg_in (&regs->sr);
+
+ while (timeout-- && (status & I2C_BB)) {
+#if 1
+ volatile int temp;
+
+ mpc_reg_out (&regs->cr, I2C_STA, I2C_STA);
+ temp = mpc_reg_in (&regs->dr);
+ mpc_reg_out (&regs->cr, 0, I2C_STA);
+ mpc_reg_out (&regs->cr, 0, 0);
+ mpc_reg_out (&regs->cr, I2C_EN, 0);
+#endif
+ udelay (1000);
+ status = mpc_reg_in (&regs->sr);
+ }
+
+ return (status & I2C_BB);
+}
+
+static int wait_for_pin (int *status)
+{
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int timeout = I2C_TIMEOUT;
+
+ *status = mpc_reg_in (&regs->sr);
+
+ while (timeout-- && !(*status & I2C_IF)) {
+ udelay (1000);
+ *status = mpc_reg_in (&regs->sr);
+ }
+
+ if (!(*status & I2C_IF)) {
+ return -1;
+ }
+
+ mpc_reg_out (&regs->sr, 0, I2C_IF);
+ return 0;
+}
+
+static int do_address (uchar chip, char rdwr_flag)
+{
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int status;
+
+ chip <<= 1;
+
+ if (rdwr_flag)
+ chip |= 1;
+
+ mpc_reg_out (&regs->cr, I2C_TX, I2C_TX);
+ mpc_reg_out (&regs->dr, chip, 0);
+
+ if (wait_for_pin (&status))
+ return -2;
+ if (status & I2C_RXAK)
+ return -3;
+ return 0;
+}
+
+static int send_bytes (uchar chip, char *buf, int len)
+{
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int wrcount;
+ int status;
+
+ for (wrcount = 0; wrcount < len; ++wrcount) {
+
+ mpc_reg_out (&regs->dr, buf[wrcount], 0);
+
+ if (wait_for_pin (&status))
+ break;
+
+ if (status & I2C_RXAK)
+ break;
+
+ }
+
+ return !(wrcount == len);
+ return 0;
+}
+
+static int receive_bytes (uchar chip, char *buf, int len)
+{
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int dummy = 1;
+ int rdcount = 0;
+ int status;
+ int i;
+
+ mpc_reg_out (&regs->cr, 0, I2C_TX);
+
+ for (i = 0; i < len; ++i) {
+ buf[rdcount] = mpc_reg_in (&regs->dr);
+
+ if (dummy)
+ dummy = 0;
+ else
+ rdcount++;
+
+ if (wait_for_pin (&status))
+ return -4;
+ }
+
+ mpc_reg_out (&regs->cr, I2C_TXAK, I2C_TXAK);
+ buf[rdcount++] = mpc_reg_in (&regs->dr);
+
+ if (wait_for_pin (&status))
+ return -5;
+
+ mpc_reg_out (&regs->cr, 0, I2C_TXAK);
+ return 0;
+}
+
+/**************** I2C API ****************/
+
+void i2c_init (int speed, int saddr)
+{
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+
+ mpc_reg_out (&regs->cr, 0, 0);
+ mpc_reg_out (&regs->adr, saddr << 1, 0);
+
+ /* Set clock
+ */
+ mpc_reg_out (&regs->fdr, mpc_get_fdr (speed), 0);
+
+ /* Enable module
+ */
+ mpc_reg_out (&regs->cr, I2C_EN, I2C_INIT_MASK);
+ mpc_reg_out (&regs->sr, 0, I2C_IF);
+ return;
+}
+
+static int mpc_get_fdr (int speed)
+{
+ static int fdr = -1;
+
+ if (fdr == -1) {
+ ulong best_speed = 0;
+ ulong divider;
+ ulong ipb, scl;
+ ulong bestmatch = 0xffffffffUL;
+ int best_i = 0, best_j = 0, i, j;
+ int SCL_Tap[] = { 9, 10, 12, 15, 5, 6, 7, 8 };
+ struct mpc8220_i2c_tap scltap[] = {
+ {4, 1},
+ {4, 2},
+ {6, 4},
+ {6, 8},
+ {14, 16},
+ {30, 32},
+ {62, 64},
+ {126, 128}
+ };
+
+ ipb = gd->bus_clk;
+ for (i = 7; i >= 0; i--) {
+ for (j = 7; j >= 0; j--) {
+ scl = 2 * (scltap[j].scl2tap +
+ (SCL_Tap[i] -
+ 1) * scltap[j].tap2tap + 2);
+ if (ipb <= speed * scl) {
+ if ((speed * scl - ipb) < bestmatch) {
+ bestmatch = speed * scl - ipb;
+ best_i = i;
+ best_j = j;
+ best_speed = ipb / scl;
+ }
+ }
+ }
+ }
+ divider = (best_i & 3) | ((best_i & 4) << 3) | (best_j << 2);
+ if (gd->flags & GD_FLG_RELOC) {
+ fdr = divider;
+ } else {
+ printf ("%ld kHz, ", best_speed / 1000);
+ return divider;
+ }
+ }
+
+ return fdr;
+}
+
+int i2c_probe (uchar chip)
+{
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int i;
+
+ for (i = 0; i < I2C_RETRIES; i++) {
+ mpc_reg_out (&regs->cr, I2C_STA, I2C_STA);
+
+ if (!do_address (chip, 0)) {
+ mpc_reg_out (&regs->cr, 0, I2C_STA);
+ break;
+ }
+
+ mpc_reg_out (&regs->cr, 0, I2C_STA);
+ udelay (50);
+ }
+
+ return (i == I2C_RETRIES);
+}
+
+int i2c_read (uchar chip, uint addr, int alen, uchar * buf, int len)
+{
+ uchar xaddr[4];
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int ret = -1;
+
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+
+ if (wait_for_bb ()) {
+ printf ("i2c_read: bus is busy\n");
+ goto Done;
+ }
+
+ mpc_reg_out (&regs->cr, I2C_STA, I2C_STA);
+ if (do_address (chip, 0)) {
+ printf ("i2c_read: failed to address chip\n");
+ goto Done;
+ }
+
+ if (send_bytes (chip, (char *)&xaddr[4 - alen], alen)) {
+ printf ("i2c_read: send_bytes failed\n");
+ goto Done;
+ }
+
+ mpc_reg_out (&regs->cr, I2C_RSTA, I2C_RSTA);
+ if (do_address (chip, 1)) {
+ printf ("i2c_read: failed to address chip\n");
+ goto Done;
+ }
+
+ if (receive_bytes (chip, (char *)buf, len)) {
+ printf ("i2c_read: receive_bytes failed\n");
+ goto Done;
+ }
+
+ ret = 0;
+ Done:
+ mpc_reg_out (&regs->cr, 0, I2C_STA);
+ return ret;
+}
+
+int i2c_write (uchar chip, uint addr, int alen, uchar * buf, int len)
+{
+ uchar xaddr[4];
+ i2c_t *regs = (i2c_t *) MMAP_I2C;
+ int ret = -1;
+
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+
+ if (wait_for_bb ()) {
+ printf ("i2c_write: bus is busy\n");
+ goto Done;
+ }
+
+ mpc_reg_out (&regs->cr, I2C_STA, I2C_STA);
+ if (do_address (chip, 0)) {
+ printf ("i2c_write: failed to address chip\n");
+ goto Done;
+ }
+
+ if (send_bytes (chip, (char *)&xaddr[4 - alen], alen)) {
+ printf ("i2c_write: send_bytes failed\n");
+ goto Done;
+ }
+
+ if (send_bytes (chip, (char *)buf, len)) {
+ printf ("i2c_write: send_bytes failed\n");
+ goto Done;
+ }
+
+ ret = 0;
+ Done:
+ mpc_reg_out (&regs->cr, 0, I2C_STA);
+ return ret;
+}
+
+#endif /* CONFIG_HARD_I2C */
diff --git a/arch/ppc/cpu/mpc8220/i2cCore.c b/arch/ppc/cpu/mpc8220/i2cCore.c
new file mode 100644
index 0000000..b89ad03
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/i2cCore.c
@@ -0,0 +1,627 @@
+/* I2cCore.c - MPC8220 PPC I2C Library */
+
+/* Copyright 2004 Freescale Semiconductor, Inc. */
+
+/*
+modification history
+--------------------
+01c,29jun04,tcl 1.3 removed CR. Added two bytes offset support.
+01b,19jan04,tcl 1.2 removed i2cMsDelay and sysDecGet. renamed i2cMsDelay
+ back to sysMsDelay
+01a,19jan04,tcl 1.1 created and seperated from i2c.c
+*/
+
+/*
+DESCRIPTION
+This file contain I2C low level handling library functions
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <vxWorks.h>
+#include <sysLib.h>
+#include <iosLib.h>
+#include <logLib.h>
+#include <tickLib.h>
+
+/* BSP Includes */
+#include "config.h"
+#include "mpc8220.h"
+#include "i2cCore.h"
+
+#ifdef DEBUG_I2CCORE
+int I2CCDbg = 0;
+#endif
+
+#define ABS(x) ((x < 0)? -x : x)
+
+char *I2CERR[16] = {
+ "Transfer in Progress\n", /* 0 */
+ "Transfer complete\n",
+ "Not Addressed\n", /* 2 */
+ "Addressed as a slave\n",
+ "Bus is Idle\n", /* 4 */
+ "Bus is busy\n",
+ "Arbitration Lost\n", /* 6 */
+ "Arbitration on Track\n",
+ "Slave receive, master writing to slave\n", /* 8 */
+ "Slave transmit, master reading from slave\n",
+ "Interrupt is pending\n", /* 10 */
+ "Interrupt complete\n",
+ "Acknowledge received\n", /* 12 */
+ "No acknowledge received\n",
+ "Unknown status\n", /* 14 */
+ "\n"
+};
+
+/******************************************************************************
+ *
+ * chk_status - Check I2C status bit
+ *
+ * RETURNS: OK, or ERROR if the bit encounter
+ *
+ */
+
+STATUS chk_status (PSI2C pi2c, UINT8 sta_bit, UINT8 truefalse)
+{
+ int i, status = 0;
+
+ for (i = 0; i < I2C_POLL_COUNT; i++) {
+ if ((pi2c->sr & sta_bit) == (truefalse ? sta_bit : 0))
+ return (OK);
+ }
+
+ I2CCDBG (L2, ("--- sr %x stabit %x truefalse %d\n",
+ pi2c->sr, sta_bit, truefalse, 0, 0, 0));
+
+ if (i == I2C_POLL_COUNT) {
+ switch (sta_bit) {
+ case I2C_STA_CF:
+ status = 0;
+ break;
+ case I2C_STA_AAS:
+ status = 2;
+ break;
+ case I2C_STA_BB:
+ status = 4;
+ break;
+ case I2C_STA_AL:
+ status = 6;
+ break;
+ case I2C_STA_SRW:
+ status = 8;
+ break;
+ case I2C_STA_IF:
+ status = 10;
+ break;
+ case I2C_STA_RXAK:
+ status = 12;
+ break;
+ default:
+ status = 14;
+ break;
+ }
+
+ if (!truefalse)
+ status++;
+
+ I2CCDBG (NO, ("--- status %d\n", status, 0, 0, 0, 0, 0));
+ I2CCDBG (NO, (I2CERR[status], 0, 0, 0, 0, 0, 0));
+ }
+
+ return (ERROR);
+}
+
+/******************************************************************************
+ *
+ * I2C Enable - Enable the I2C Controller
+ *
+ */
+STATUS i2c_enable (SI2C * pi2c, PI2CSET pi2cSet)
+{
+ int fdr = pi2cSet->bit_rate;
+ UINT8 adr = pi2cSet->i2c_adr;
+
+ I2CCDBG (L2, ("i2c_enable fdr %d adr %x\n", fdr, adr, 0, 0, 0, 0));
+
+ i2c_clear (pi2c); /* Clear FDR, ADR, SR and CR reg */
+
+ SetI2cFDR (pi2c, fdr); /* Frequency */
+ pi2c->adr = adr;
+
+ pi2c->cr = I2C_CTL_EN; /* Set Enable */
+
+ /*
+ The I2C bus should be in Idle state. If the bus is busy,
+ clear the STA bit in control register
+ */
+ if (chk_status (pi2c, I2C_STA_BB, 0) != OK) {
+ if ((pi2c->cr & I2C_CTL_STA) == I2C_CTL_STA)
+ pi2c->cr &= ~I2C_CTL_STA;
+
+ /* Check again if it is still busy, return error if found */
+ if (chk_status (pi2c, I2C_STA_BB, 1) == OK)
+ return ERROR;
+ }
+
+ return (OK);
+}
+
+/******************************************************************************
+ *
+ * I2C Disable - Disable the I2C Controller
+ *
+ */
+STATUS i2c_disable (PSI2C pi2c)
+{
+ i2c_clear (pi2c);
+
+ pi2c->cr &= I2C_CTL_EN; /* Disable I2c */
+
+ if ((pi2c->cr & I2C_CTL_STA) == I2C_CTL_STA)
+ pi2c->cr &= ~I2C_CTL_STA;
+
+ if (chk_status (pi2c, I2C_STA_BB, 0) != OK)
+ return ERROR;
+
+ return (OK);
+}
+
+/******************************************************************************
+ *
+ * I2C Clear - Clear the I2C Controller
+ *
+ */
+STATUS i2c_clear (PSI2C pi2c)
+{
+ pi2c->adr = 0;
+ pi2c->fdr = 0;
+ pi2c->cr = 0;
+ pi2c->sr = 0;
+
+ return (OK);
+}
+
+
+STATUS i2c_start (PSI2C pi2c, PI2CSET pi2cSet)
+{
+#ifdef TWOBYTES
+ UINT16 ByteOffset = pi2cSet->str_adr;
+#else
+ UINT8 ByteOffset = pi2cSet->str_adr;
+#endif
+#if 1
+ UINT8 tmp = 0;
+#endif
+ UINT8 Addr = pi2cSet->slv_adr;
+
+ pi2c->cr |= I2C_CTL_STA; /* Generate start signal */
+
+ if (chk_status (pi2c, I2C_STA_BB, 1) != OK)
+ return ERROR;
+
+ /* Write slave address */
+ if (i2c_writebyte (pi2c, &Addr) != OK) {
+ i2c_stop (pi2c); /* Disable I2c */
+ return ERROR;
+ }
+#ifdef TWOBYTES
+# if 0
+ /* Issue the offset to start */
+ if (i2c_write2byte (pi2c, &ByteOffset) != OK) {
+ i2c_stop (pi2c); /* Disable I2c */
+ return ERROR;
+ }
+#endif
+ tmp = (ByteOffset >> 8) & 0xff;
+ if (i2c_writebyte (pi2c, &tmp) != OK) {
+ i2c_stop (pi2c); /* Disable I2c */
+ return ERROR;
+ }
+ tmp = ByteOffset & 0xff;
+ if (i2c_writebyte (pi2c, &tmp) != OK) {
+ i2c_stop (pi2c); /* Disable I2c */
+ return ERROR;
+ }
+#else
+ if (i2c_writebyte (pi2c, &ByteOffset) != OK) {
+ i2c_stop (pi2c); /* Disable I2c */
+ return ERROR;
+ }
+#endif
+
+ return (OK);
+}
+
+STATUS i2c_stop (PSI2C pi2c)
+{
+ pi2c->cr &= ~I2C_CTL_STA; /* Generate stop signal */
+ if (chk_status (pi2c, I2C_STA_BB, 0) != OK)
+ return ERROR;
+
+ return (OK);
+}
+
+/******************************************************************************
+ *
+ * Read Len bytes to the location pointed to by *Data from the device
+ * with address Addr.
+ */
+int i2c_readblock (SI2C * pi2c, PI2CSET pi2cSet, UINT8 * Data)
+{
+ int i = 0;
+ UINT8 Tmp;
+
+/* UINT8 ByteOffset = pi2cSet->str_adr; not used? */
+ UINT8 Addr = pi2cSet->slv_adr;
+ int Length = pi2cSet->xfer_size;
+
+ I2CCDBG (L1, ("i2c_readblock addr %x data 0x%08x len %d offset %d\n",
+ Addr, (int) Data, Length, ByteOffset, 0, 0));
+
+ if (pi2c->sr & I2C_STA_AL) { /* Check if Arbitration lost */
+ I2CCDBG (FN, ("Arbitration lost\n", 0, 0, 0, 0, 0, 0));
+ pi2c->sr &= ~I2C_STA_AL; /* Clear Arbitration status bit */
+ return ERROR;
+ }
+
+ pi2c->cr |= I2C_CTL_TX; /* Enable the I2c for TX, Ack */
+
+ if (i2c_start (pi2c, pi2cSet) == ERROR)
+ return ERROR;
+
+ pi2c->cr |= I2C_CTL_RSTA; /* Repeat Start */
+
+ Tmp = Addr | 1;
+
+ if (i2c_writebyte (pi2c, &Tmp) != OK) {
+ i2c_stop (pi2c); /* Disable I2c */
+ return ERROR;
+ }
+
+ if (((pi2c->sr & 0x07) == 0x07) || (pi2c->sr & 0x01))
+ return ERROR;
+
+ pi2c->cr &= ~I2C_CTL_TX; /* Set receive mode */
+
+ if (((pi2c->sr & 0x07) == 0x07) || (pi2c->sr & 0x01))
+ return ERROR;
+
+ /* Dummy Read */
+ if (i2c_readbyte (pi2c, &Tmp, &i) != OK) {
+ i2c_stop (pi2c); /* Disable I2c */
+ return ERROR;
+ }
+
+ i = 0;
+ while (Length) {
+ if (Length == 2)
+ pi2c->cr |= I2C_CTL_TXAK;
+
+ if (Length == 1)
+ pi2c->cr &= ~I2C_CTL_STA;
+
+ if (i2c_readbyte (pi2c, Data, &Length) != OK) {
+ return i2c_stop (pi2c);
+ }
+ i++;
+ Length--;
+ Data++;
+ }
+
+ if (i2c_stop (pi2c) == ERROR)
+ return ERROR;
+
+ return i;
+}
+
+STATUS i2c_writeblock (SI2C * pi2c, PI2CSET pi2cSet, UINT8 * Data)
+{
+ int Length = pi2cSet->xfer_size;
+
+#ifdef TWOBYTES
+ UINT16 ByteOffset = pi2cSet->str_adr;
+#else
+ UINT8 ByteOffset = pi2cSet->str_adr;
+#endif
+ int j, k;
+
+ I2CCDBG (L2, ("i2c_writeblock\n", 0, 0, 0, 0, 0, 0));
+
+ if (pi2c->sr & I2C_STA_AL) {
+ /* Check if arbitration lost */
+ I2CCDBG (L2, ("Arbitration lost\n", 0, 0, 0, 0, 0, 0));
+ pi2c->sr &= ~I2C_STA_AL; /* Clear the condition */
+ return ERROR;
+ }
+
+ pi2c->cr |= I2C_CTL_TX; /* Enable the I2c for TX, Ack */
+
+ /* Do the not even offset first */
+ if ((ByteOffset % 8) != 0) {
+ int remain;
+
+ if (Length > 8) {
+ remain = 8 - (ByteOffset % 8);
+ Length -= remain;
+
+ pi2cSet->str_adr = ByteOffset;
+
+ if (i2c_start (pi2c, pi2cSet) == ERROR)
+ return ERROR;
+
+ for (j = ByteOffset; j < remain; j++) {
+ if (i2c_writebyte (pi2c, Data++) != OK)
+ return ERROR;
+ }
+
+ if (i2c_stop (pi2c) == ERROR)
+ return ERROR;
+
+ sysMsDelay (32);
+
+ /* Update the new ByteOffset */
+ ByteOffset += remain;
+ }
+ }
+
+ for (j = ByteOffset, k = 0; j < (Length + ByteOffset); j++) {
+ if ((j % 8) == 0) {
+ pi2cSet->str_adr = j;
+ if (i2c_start (pi2c, pi2cSet) == ERROR)
+ return ERROR;
+ }
+
+ k++;
+
+ if (i2c_writebyte (pi2c, Data++) != OK)
+ return ERROR;
+
+ if ((j == (Length - 1)) || ((k % 8) == 0)) {
+ if (i2c_stop (pi2c) == ERROR)
+ return ERROR;
+
+ sysMsDelay (50);
+ }
+
+ }
+
+ return k;
+}
+
+STATUS i2c_readbyte (SI2C * pi2c, UINT8 * readb, int *index)
+{
+ pi2c->sr &= ~I2C_STA_IF; /* Clear Interrupt Bit */
+ *readb = pi2c->dr; /* Read a byte */
+
+ /*
+ Set I2C_CTRL_TXAK will cause Transfer pending and
+ set I2C_CTRL_STA will cause Interrupt pending
+ */
+ if (*index != 2) {
+ if (chk_status (pi2c, I2C_STA_CF, 1) != OK) /* Transfer not complete? */
+ return ERROR;
+ }
+
+ if (*index != 1) {
+ if (chk_status (pi2c, I2C_STA_IF, 1) != OK)
+ return ERROR;
+ }
+
+ return (OK);
+}
+
+
+STATUS i2c_writebyte (SI2C * pi2c, UINT8 * writeb)
+{
+ pi2c->sr &= ~I2C_STA_IF; /* Clear Interrupt */
+ pi2c->dr = *writeb; /* Write a byte */
+
+ if (chk_status (pi2c, I2C_STA_CF, 1) != OK) /* Transfer not complete? */
+ return ERROR;
+
+ if (chk_status (pi2c, I2C_STA_IF, 1) != OK)
+ return ERROR;
+
+ return OK;
+}
+
+STATUS i2c_write2byte (SI2C * pi2c, UINT16 * writeb)
+{
+ UINT8 data;
+
+ data = (UINT8) ((*writeb >> 8) & 0xff);
+ if (i2c_writebyte (pi2c, &data) != OK)
+ return ERROR;
+ data = (UINT8) (*writeb & 0xff);
+ if (i2c_writebyte (pi2c, &data) != OK)
+ return ERROR;
+ return OK;
+}
+
+/* FDR table base on 33MHz - more detail please refer to Odini2c_dividers.xls
+FDR FDR scl sda scl2tap2
+510 432 tap tap tap tap scl_per sda_hold I2C Freq 0 1 2 3 4 5
+000 000 9 3 4 1 28 Clocks 9 Clocks 1190 KHz 0 0 0 0 0 0
+000 001 9 3 4 2 44 Clocks 11 Clocks 758 KHz 0 0 1 0 0 0
+000 010 9 3 6 4 80 Clocks 17 Clocks 417 KHz 0 0 0 1 0 0
+000 011 9 3 6 8 144 Clocks 25 Clocks 231 KHz 0 0 1 1 0 0
+000 100 9 3 14 16 288 Clocks 49 Clocks 116 KHz 0 0 0 0 1 0
+000 101 9 3 30 32 576 Clocks 97 Clocks 58 KHz 0 0 1 0 1 0
+000 110 9 3 62 64 1152 Clocks 193 Clocks 29 KHz 0 0 0 1 1 0
+000 111 9 3 126 128 2304 Clocks 385 Clocks 14 KHz 0 0 1 1 1 0
+001 000 10 3 4 1 30 Clocks 9 Clocks 1111 KHz1 0 0 0 0 0
+001 001 10 3 4 2 48 Clocks 11 Clocks 694 KHz 1 0 1 0 0 0
+001 010 10 3 6 4 88 Clocks 17 Clocks 379 KHz 1 0 0 1 0 0
+001 011 10 3 6 8 160 Clocks 25 Clocks 208 KHz 1 0 1 1 0 0
+001 100 10 3 14 16 320 Clocks 49 Clocks 104 KHz 1 0 0 0 1 0
+001 101 10 3 30 32 640 Clocks 97 Clocks 52 KHz 1 0 1 0 1 0
+001 110 10 3 62 64 1280 Clocks 193 Clocks 26 KHz 1 0 0 1 1 0
+001 111 10 3 126 128 2560 Clocks 385 Clocks 13 KHz 1 0 1 1 1 0
+010 000 12 4 4 1 34 Clocks 10 Clocks 980 KHz 0 1 0 0 0 0
+010 001 12 4 4 2 56 Clocks 13 Clocks 595 KHz 0 1 1 0 0 0
+010 010 12 4 6 4 104 Clocks 21 Clocks 321 KHz 0 1 0 1 0 0
+010 011 12 4 6 8 192 Clocks 33 Clocks 174 KHz 0 1 1 1 0 0
+010 100 12 4 14 16 384 Clocks 65 Clocks 87 KHz 0 1 0 0 1 0
+010 101 12 4 30 32 768 Clocks 129 Clocks 43 KHz 0 1 1 0 1 0
+010 110 12 4 62 64 1536 Clocks 257 Clocks 22 KHz 0 1 0 1 1 0
+010 111 12 4 126 128 3072 Clocks 513 Clocks 11 KHz 0 1 1 1 1 0
+011 000 15 4 4 1 40 Clocks 10 Clocks 833 KHz 1 1 0 0 0 0
+011 001 15 4 4 2 68 Clocks 13 Clocks 490 KHz 1 1 1 0 0 0
+011 010 15 4 6 4 128 Clocks 21 Clocks 260 KHz 1 1 0 1 0 0
+011 011 15 4 6 8 240 Clocks 33 Clocks 139 KHz 1 1 1 1 0 0
+011 100 15 4 14 16 480 Clocks 65 Clocks 69 KHz 1 1 0 0 1 0
+011 101 15 4 30 32 960 Clocks 129 Clocks 35 KHz 1 1 1 0 1 0
+011 110 15 4 62 64 1920 Clocks 257 Clocks 17 KHz 1 1 0 1 1 0
+011 111 15 4 126 128 3840 Clocks 513 Clocks 9 KHz 1 1 1 1 1 0
+100 000 5 1 4 1 20 Clocks 7 Clocks 1667 KHz 0 0 0 0 0 1
+100 001 5 1 4 2 28 Clocks 7 Clocks 1190 KHz 0 0 1 0 0 1
+100 010 5 1 6 4 48 Clocks 9 Clocks 694 KHz 0 0 0 1 0 1
+100 011 5 1 6 8 80 Clocks 9 Clocks 417 KHz 0 0 1 1 0 1
+100 100 5 1 14 16 160 Clocks 17 Clocks 208 KHz 0 0 0 0 1 1
+100 101 5 1 30 32 320 Clocks 33 Clocks 104 KHz 0 0 1 0 1 1
+100 110 5 1 62 64 640 Clocks 65 Clocks 52 KHz 0 0 0 1 1 1
+100 111 5 1 126 128 1280 Clocks 129 Clocks 26 KHz 0 0 1 1 1 1
+101 000 6 1 4 1 22 Clocks 7 Clocks 1515 KHz 1 0 0 0 0 1
+101 001 6 1 4 2 32 Clocks 7 Clocks 1042 KHz 1 0 1 0 0 1
+101 010 6 1 6 4 56 Clocks 9 Clocks 595 KHz 1 0 0 1 0 1
+101 011 6 1 6 8 96 Clocks 9 Clocks 347 KHz 1 0 1 1 0 1
+101 100 6 1 14 16 192 Clocks 17 Clocks 174 KHz 1 0 0 0 1 1
+101 101 6 1 30 32 384 Clocks 33 Clocks 87 KHz 1 0 1 0 1 1
+101 110 6 1 62 64 768 Clocks 65 Clocks 43 KHz 1 0 0 1 1 1
+101 111 6 1 126 128 1536 Clocks 129 Clocks 22 KHz 1 0 1 1 1 1
+110 000 7 2 4 1 24 Clocks 8 Clocks 1389 KHz 0 1 0 0 0 1
+110 001 7 2 4 2 36 Clocks 9 Clocks 926 KHz 0 1 1 0 0 1
+110 010 7 2 6 4 64 Clocks 13 Clocks 521 KHz 0 1 0 1 0 1
+110 011 7 2 6 8 112 Clocks 17 Clocks 298 KHz 0 1 1 1 0 1
+110 100 7 2 14 16 224 Clocks 33 Clocks 149 KHz 0 1 0 0 1 1
+110 101 7 2 30 32 448 Clocks 65 Clocks 74 KHz 0 1 1 0 1 1
+110 110 7 2 62 64 896 Clocks 129 Clocks 37 KHz 0 1 0 1 1 1
+110 111 7 2 126 128 1792 Clocks 257 Clocks 19 KHz 0 1 1 1 1 1
+111 000 8 2 4 1 26 Clocks 8 Clocks 1282 KHz 1 1 0 0 0 1
+111 001 8 2 4 2 40 Clocks 9 Clocks 833 KHz 1 1 1 0 0 1
+111 010 8 2 6 4 72 Clocks 13 Clocks 463 KHz 1 1 0 1 0 1
+111 011 8 2 6 8 128 Clocks 17 Clocks 260 KHz 1 1 1 1 0 1
+111 100 8 2 14 16 256 Clocks 33 Clocks 130 KHz 1 1 0 0 1 1
+111 101 8 2 30 32 512 Clocks 65 Clocks 65 KHz 1 1 1 0 1 1
+111 110 8 2 62 64 1024 Clocks 129 Clocks 33 KHz 1 1 0 1 1 1
+111 111 8 2 126 128 2048 Clocks 257 Clocks 16 KHz 1 1 1 1 1 1
+*/
+STATUS SetI2cFDR (PSI2C pi2cRegs, int bitrate)
+{
+/* Constants */
+ const UINT8 div_hold[8][3] = { {9, 3}, {10, 3},
+ {12, 4}, {15, 4},
+ {5, 1}, {6, 1},
+ {7, 2}, {8, 2}
+ };
+
+ const UINT8 scl_tap[8][2] = { {4, 1}, {4, 2},
+ {6, 4}, {6, 8},
+ {14, 16}, {30, 32},
+ {62, 64}, {126, 128}
+ };
+
+ UINT8 mfdr_bits;
+
+ int i = 0;
+ int j = 0;
+
+ int Diff, min;
+ int WhichFreq, iRec, jRec;
+ int SCL_Period;
+ int SCL_Hold;
+ int I2C_Freq;
+
+ I2CCDBG (L2, ("Entering getBitRate: bitrate %d pi2cRegs 0x%08x\n",
+ bitrate, (int) pi2cRegs, 0, 0, 0, 0));
+
+ if (bitrate < 0) {
+ I2CCDBG (NO, ("Invalid bitrate\n", 0, 0, 0, 0, 0, 0));
+ return ERROR;
+ }
+
+ /* Initialize */
+ mfdr_bits = 0;
+ min = 0x7fffffff;
+ WhichFreq = iRec = jRec = 0;
+
+ for (i = 0; i < 8; i++) {
+ for (j = 0; j < 8; j++) {
+ /* SCL Period = 2 * (scl2tap + [(SCL_Tap - 1) * tap2tap] + 2)
+ * SCL Hold = scl2tap + ((SDA_Tap - 1) * tap2tap) + 3
+ * Bit Rate (I2C Freq) = System Freq / SCL Period
+ */
+ SCL_Period =
+ 2 * (scl_tap[i][0] +
+ ((div_hold[j][0] - 1) * scl_tap[i][1]) +
+ 2);
+
+ /* Now get the I2C Freq */
+ I2C_Freq = DEV_CLOCK_FREQ / SCL_Period;
+
+ /* Take equal or slower */
+ if (I2C_Freq > bitrate)
+ continue;
+
+ /* Take the differences */
+ Diff = I2C_Freq - bitrate;
+
+ Diff = ABS (Diff);
+
+ /* Find the closer value */
+ if (Diff < min) {
+ min = Diff;
+ WhichFreq = I2C_Freq;
+ iRec = i;
+ jRec = j;
+ }
+
+ I2CCDBG (L2,
+ ("--- (%d,%d) I2C_Freq %d minDiff %d min %d\n",
+ i, j, I2C_Freq, Diff, min, 0));
+ }
+ }
+
+ SCL_Period =
+ 2 * (scl_tap[iRec][0] +
+ ((div_hold[jRec][0] - 1) * scl_tap[iRec][1]) + 2);
+
+ I2CCDBG (L2, ("\nmin %d WhichFreq %d iRec %d jRec %d\n",
+ min, WhichFreq, iRec, jRec, 0, 0));
+ I2CCDBG (L2, ("--- scl2tap %d SCL_Tap %d tap2tap %d\n",
+ scl_tap[iRec][0], div_hold[jRec][0], scl_tap[iRec][1],
+ 0, 0, 0));
+
+ /* This may no require */
+ SCL_Hold =
+ scl_tap[iRec][0] +
+ ((div_hold[jRec][1] - 1) * scl_tap[iRec][1]) + 3;
+ I2CCDBG (L2,
+ ("--- SCL_Period %d SCL_Hold %d\n", SCL_Period, SCL_Hold, 0,
+ 0, 0, 0));
+
+ I2CCDBG (L2, ("--- mfdr_bits %x\n", mfdr_bits, 0, 0, 0, 0, 0));
+
+ /* FDR 4,3,2 */
+ if ((iRec & 1) == 1)
+ mfdr_bits |= 0x04; /* FDR 2 */
+ if ((iRec & 2) == 2)
+ mfdr_bits |= 0x08; /* FDR 3 */
+ if ((iRec & 4) == 4)
+ mfdr_bits |= 0x10; /* FDR 4 */
+ /* FDR 5,1,0 */
+ if ((jRec & 1) == 1)
+ mfdr_bits |= 0x01; /* FDR 0 */
+ if ((jRec & 2) == 2)
+ mfdr_bits |= 0x02; /* FDR 1 */
+ if ((jRec & 4) == 4)
+ mfdr_bits |= 0x20; /* FDR 5 */
+
+ I2CCDBG (L2, ("--- mfdr_bits %x\n", mfdr_bits, 0, 0, 0, 0, 0));
+
+ pi2cRegs->fdr = mfdr_bits;
+
+ return OK;
+}
diff --git a/arch/ppc/cpu/mpc8220/i2cCore.h b/arch/ppc/cpu/mpc8220/i2cCore.h
new file mode 100644
index 0000000..72783fd
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/i2cCore.h
@@ -0,0 +1,103 @@
+/*
+ * i2cCore.h
+ *
+ * Prototypes, etc. for the Motorola MPC8220
+ * embedded cpu chips
+ *
+ * 2004 (c) Freescale, Inc.
+ * Author: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef __INCi2ccoreh
+#define __INCi2ccoreh
+#ifndef __ASSEMBLY__
+/* device types */
+#define I2C_DEVICE_TYPE_EEPROM 0
+#define I2C_EEPROM_ADRS 0xa0
+#define I2C_CTRL_ADRS I2C_EEPROM_ADRS
+#define EEPROM_ADDR0 0xA2 /* on Dimm SPD eeprom */
+#define EEPROM_ADDR1 0xA4 /* on Board SPD eeprom */
+#define EEPROM_ADDR2 0xD2 /* non-standard eeprom - clock generator */
+/* Control Register */
+#define I2C_CTL_EN 0x80 /* I2C Enable */
+#define I2C_CTL_IEN 0x40 /* I2C Interrupt Enable */
+#define I2C_CTL_STA 0x20 /* Master/Slave Mode select */
+#define I2C_CTL_TX 0x10 /* Transmit/Receive Mode Select */
+#define I2C_CTL_TXAK 0x08 /* Transmit Acknowledge Enable */
+#define I2C_CTL_RSTA 0x04 /* Repeat Start */
+/* Status Register */
+#define I2C_STA_CF 0x80 /* Data Transfer */
+#define I2C_STA_AAS 0x40 /* Adressed As Slave */
+#define I2C_STA_BB 0x20 /* Bus Busy */
+#define I2C_STA_AL 0x10 /* Arbitration Lost */
+#define I2C_STA_SRW 0x04 /* Slave Read/Write */
+#define I2C_STA_IF 0x02 /* I2C Interrupt */
+#define I2C_STA_RXAK 0x01 /* Receive Acknowledge */
+/* Interrupt Contol Register */
+#define I2C_INT_BNBE2 0x80 /* Bus Not Busy Enable 2 */
+#define I2C_INT_TE2 0x40 /* Transmit Enable 2 */
+#define I2C_INT_RE2 0x20 /* Receive Enable 2 */
+#define I2C_INT_IE2 0x10 /* Interrupt Enable 2 */
+#define I2C_INT_BNBE1 0x08 /* Bus Not Busy Enable 1 */
+#define I2C_INT_TE1 0x04 /* Transmit Enable 1 */
+#define I2C_INT_RE1 0x02 /* Receive Enable 1 */
+#define I2C_INT_IE1 0x01 /* Interrupt Enable 1 */
+#define I2C_POLL_COUNT 0x100000
+#define I2C_ENABLE 0x00000001
+#define I2C_DISABLE 0x00000002
+#define I2C_START 0x00000004
+#define I2C_REPSTART 0x00000008
+#define I2C_STOP 0x00000010
+#define I2C_BITRATE 0x00000020
+#define I2C_SLAVEADR 0x00000040
+#define I2C_STARTADR 0x00000080
+#undef TWOBYTES
+typedef struct i2c_settings {
+ /* Device settings */
+ int bit_rate; /* Device bit rate */
+ u8 i2c_adr; /* I2C address */
+ u8 slv_adr; /* Slave address */
+#ifdef TWOBYTES
+ u16 str_adr; /* Start address */
+#else
+ u8 str_adr; /* Start address */
+#endif
+ int xfer_size; /* Transfer Size */
+
+ int bI2c_en; /* Enable or Disable */
+ int cmdFlag; /* I2c Command Flags */
+} i2cset_t;
+
+/*
+int check_status(PSI2C pi2c, u8 sta_bit, u8 truefalse);
+int i2c_enable(PSI2C pi2c, PI2CSET pi2cSet);
+int i2c_disable(PSI2C pi2c);
+int i2c_start(PSI2C pi2c, PI2CSET pi2cSet);
+int i2c_stop(PSI2C pi2c);
+int i2c_clear(PSI2C pi2c);
+int i2c_readblock (PSI2C pi2c, PI2CSET pi2cSet, u8 *Data);
+int i2c_writeblock (PSI2C pi2c, PI2CSET pi2cSet, u8 *Data);
+int i2c_readbyte(PSI2C pi2c, u8 *readb, int *index);
+int i2c_writebyte(PSI2C pi2c, u8 *writeb);
+int SetI2cFDR( PSI2C pi2cRegs, int bitrate );
+*/
+#endif /* __ASSEMBLY__ */
+
+#endif /* __INCi2ccoreh */
diff --git a/arch/ppc/cpu/mpc8220/interrupts.c b/arch/ppc/cpu/mpc8220/interrupts.c
new file mode 100644
index 0000000..78e9917
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/interrupts.c
@@ -0,0 +1,80 @@
+/*
+ * (C) Copyright -2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2001
+ * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * interrupts.c - just enough support for the decrementer/timer
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <command.h>
+
+int interrupt_init_cpu (ulong * decrementer_count)
+{
+ *decrementer_count = get_tbclk () / CONFIG_SYS_HZ;
+
+ return (0);
+}
+
+/****************************************************************************/
+
+/*
+ * Handle external interrupts
+ */
+void external_interrupt (struct pt_regs *regs)
+{
+ puts ("external_interrupt (oops!)\n");
+}
+
+void timer_interrupt_cpu (struct pt_regs *regs)
+{
+ /* nothing to do here */
+ return;
+}
+
+/****************************************************************************/
+
+/*
+ * Install and free a interrupt handler.
+ */
+
+void irq_install_handler (int vec, interrupt_handler_t * handler, void *arg)
+{
+
+}
+
+void irq_free_handler (int vec)
+{
+
+}
+
+/****************************************************************************/
+
+void
+do_irqinfo (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
+{
+ puts ("IRQ related functions are unimplemented currently.\n");
+}
diff --git a/arch/ppc/cpu/mpc8220/io.S b/arch/ppc/cpu/mpc8220/io.S
new file mode 100644
index 0000000..5ecdf55
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/io.S
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (C) 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Andreas Heppel <aheppel@sysgo.de>
+ * Copyright (C) 2003 Wolfgang Denk <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <ppc_asm.tmpl>
+
+/* ------------------------------------------------------------------------------- */
+/* Function: in8 */
+/* Description: Input 8 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl in8
+in8:
+ lbz r3,0(r3)
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: in16 */
+/* Description: Input 16 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl in16
+in16:
+ lhz r3,0(r3)
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: in16r */
+/* Description: Input 16 bits and byte reverse */
+/* ------------------------------------------------------------------------------- */
+ .globl in16r
+in16r:
+ lhbrx r3,0,r3
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: in32 */
+/* Description: Input 32 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl in32
+in32:
+ lwz 3,0(3)
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: in32r */
+/* Description: Input 32 bits and byte reverse */
+/* ------------------------------------------------------------------------------- */
+ .globl in32r
+in32r:
+ lwbrx r3,0,r3
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: out8 */
+/* Description: Output 8 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl out8
+out8:
+ stb r4,0(r3)
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: out16 */
+/* Description: Output 16 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl out16
+out16:
+ sth r4,0(r3)
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: out16r */
+/* Description: Byte reverse and output 16 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl out16r
+out16r:
+ sthbrx r4,0,r3
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: out32 */
+/* Description: Output 32 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl out32
+out32:
+ stw r4,0(r3)
+ sync
+ blr
+
+/* ------------------------------------------------------------------------------- */
+/* Function: out32r */
+/* Description: Byte reverse and output 32 bits */
+/* ------------------------------------------------------------------------------- */
+ .globl out32r
+out32r:
+ stwbrx r4,0,r3
+ sync
+ blr
diff --git a/arch/ppc/cpu/mpc8220/loadtask.c b/arch/ppc/cpu/mpc8220/loadtask.c
new file mode 100644
index 0000000..6d8b627
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/loadtask.c
@@ -0,0 +1,78 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * This file is based on code
+ * (C) Copyright Motorola, Inc., 2000
+ */
+
+#include <common.h>
+#include <mpc8220.h>
+
+/* Multichannel DMA microcode */
+extern int taskTable;
+
+void loadtask (int basetask, int tasks)
+{
+ int *sram = (int *) (MMAP_SRAM + 512);
+ int *task_org = &taskTable;
+ unsigned int start, offset, end;
+ int i;
+
+#ifdef DEBUG
+ printf ("basetask = %d, tasks = %d\n", basetask, tasks);
+ printf ("task_org = 0x%08x\n", (unsigned int) task_org);
+#endif
+
+ /* setup TaskBAR register */
+ *(vu_long *) MMAP_DMA = (MMAP_SRAM + 512);
+
+ /* relocate task table entries */
+ offset = (unsigned int) sram;
+ for (i = basetask; i < basetask + tasks; i++) {
+ sram[i * 8 + 0] = task_org[i * 8 + 0] + offset;
+ sram[i * 8 + 1] = task_org[i * 8 + 1] + offset;
+ sram[i * 8 + 2] = task_org[i * 8 + 2] + offset;
+ sram[i * 8 + 3] = task_org[i * 8 + 3] + offset;
+ sram[i * 8 + 4] = task_org[i * 8 + 4];
+ sram[i * 8 + 5] = task_org[i * 8 + 5];
+ sram[i * 8 + 6] = task_org[i * 8 + 6] + offset;
+ sram[i * 8 + 7] = task_org[i * 8 + 7];
+ }
+
+ /* relocate task descriptors */
+ start = (sram[basetask * 8] - (unsigned int) sram);
+ end = (sram[(basetask + tasks - 1) * 8 + 1] - (unsigned int) sram);
+
+#ifdef DEBUG
+ printf ("TDT start = 0x%08x, end = 0x%08x\n", start, end);
+#endif
+
+ start /= 4;
+ end /= 4;
+ for (i = start; i <= end; i++) {
+ sram[i] = task_org[i];
+ }
+
+ /* relocate variables */
+ start = (sram[basetask * 8 + 2] - (unsigned int) sram);
+ end = (sram[(basetask + tasks - 1) * 8 + 2] + 256 -
+ (unsigned int) sram);
+ start /= 4;
+ end /= 4;
+ for (i = start; i < end; i++) {
+ sram[i] = task_org[i];
+ }
+
+ /* relocate function decriptors */
+ start = ((sram[basetask * 8 + 3] & 0xfffffffc) - (unsigned int) sram);
+ end = ((sram[(basetask + tasks - 1) * 8 + 3] & 0xfffffffc) + 256 -
+ (unsigned int) sram);
+ start /= 4;
+ end /= 4;
+ for (i = start; i < end; i++) {
+ sram[i] = task_org[i];
+ }
+
+ asm volatile ("sync");
+}
diff --git a/arch/ppc/cpu/mpc8220/pci.c b/arch/ppc/cpu/mpc8220/pci.c
new file mode 100644
index 0000000..7ef43b7
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/pci.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright 2004 Freescale Semiconductor.
+ * Copyright (C) 2003 Motorola Inc.
+ * Xianghua Xiao (x.xiao@motorola.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * PCI Configuration space access support for MPC8220 PCI Bridge
+ */
+#include <common.h>
+#include <mpc8220.h>
+#include <pci.h>
+#include <asm/io.h>
+
+#if defined(CONFIG_PCI)
+
+/* System RAM mapped over PCI */
+#define CONFIG_PCI_SYS_MEM_BUS CONFIG_SYS_SDRAM_BASE
+#define CONFIG_PCI_SYS_MEM_PHYS CONFIG_SYS_SDRAM_BASE
+#define CONFIG_PCI_SYS_MEM_SIZE (1024 * 1024 * 1024)
+
+#define cfg_read(val, addr, type, op) *val = op((type)(addr));
+#define cfg_write(val, addr, type, op) op((type *)(addr), (val));
+
+#define PCI_OP(rw, size, type, op, mask) \
+int mpc8220_pci_##rw##_config_##size(struct pci_controller *hose, \
+ pci_dev_t dev, int offset, type val) \
+{ \
+ u32 addr = 0; \
+ u16 cfg_type = 0; \
+ addr = ((offset & 0xfc) | cfg_type | (dev) | 0x80000000); \
+ out_be32(hose->cfg_addr, addr); \
+ __asm__ __volatile__("sync"); \
+ cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
+ out_be32(hose->cfg_addr, addr & 0x7fffffff); \
+ __asm__ __volatile__("sync"); \
+ return 0; \
+}
+
+PCI_OP(read, byte, u8 *, in_8, 3)
+PCI_OP(read, word, u16 *, in_le16, 2)
+PCI_OP(write, byte, u8, out_8, 3)
+PCI_OP(write, word, u16, out_le16, 2)
+PCI_OP(write, dword, u32, out_le32, 0)
+
+int mpc8220_pci_read_config_dword(struct pci_controller *hose, pci_dev_t dev,
+ int offset, u32 *val)
+{
+ u32 addr;
+ u32 tmpv;
+ u32 mask = 2; /* word access */
+ /* Read lower 16 bits */
+ addr = ((offset & 0xfc) | (dev) | 0x80000000);
+ out_be32(hose->cfg_addr, addr);
+ __asm__ __volatile__("sync");
+ *val = (u32) in_le16((u16 *) (hose->cfg_data + (offset & mask)));
+ out_be32(hose->cfg_addr, addr & 0x7fffffff);
+ __asm__ __volatile__("sync");
+
+ /* Read upper 16 bits */
+ offset += 2;
+ addr = ((offset & 0xfc) | 1 | (dev) | 0x80000000);
+ out_be32(hose->cfg_addr, addr);
+ __asm__ __volatile__("sync");
+ tmpv = (u32) in_le16((u16 *) (hose->cfg_data + (offset & mask)));
+ out_be32(hose->cfg_addr, addr & 0x7fffffff);
+ __asm__ __volatile__("sync");
+
+ /* combine results into dword value */
+ *val = (tmpv << 16) | *val;
+
+ return 0;
+}
+
+void
+pci_mpc8220_init(struct pci_controller *hose)
+{
+ u32 win0, win1, win2;
+ volatile mpc8220_xcpci_t *xcpci =
+ (volatile mpc8220_xcpci_t *) MMAP_XCPCI;
+
+ volatile pcfg8220_t *portcfg = (volatile pcfg8220_t *) MMAP_PCFG;
+
+ win0 = (u32) CONFIG_PCI_MEM_PHYS;
+ win1 = (u32) CONFIG_PCI_IO_PHYS;
+ win2 = (u32) CONFIG_PCI_CFG_PHYS;
+
+ /* Assert PCI reset */
+ out_be32 (&xcpci->glb_stat_ctl, PCI_GLB_STAT_CTRL_PR);
+
+ /* Disable prefetching but read-multiples will still prefetch */
+ out_be32 (&xcpci->target_ctrl, 0x00000000);
+
+ /* Initiator windows */
+ out_be32 (&xcpci->init_win0, (win0 >> 16) | win0 | 0x003f0000);
+ out_be32 (&xcpci->init_win1, ((win1 >> 16) | win1 ));
+ out_be32 (&xcpci->init_win2, ((win2 >> 16) | win2 ));
+
+ out_be32 (&xcpci->init_win_cfg,
+ PCI_INIT_WIN_CFG_WIN0_CTRL_EN |
+ PCI_INIT_WIN_CFG_WIN1_CTRL_EN | PCI_INIT_WIN_CFG_WIN1_CTRL_IO |
+ PCI_INIT_WIN_CFG_WIN2_CTRL_EN | PCI_INIT_WIN_CFG_WIN2_CTRL_IO);
+
+ out_be32 (&xcpci->init_ctrl, 0x00000000);
+
+ /* Enable bus master and mem access */
+ out_be32 (&xcpci->stat_cmd_reg, PCI_STAT_CMD_B | PCI_STAT_CMD_M);
+
+ /* Cache line size and master latency */
+ out_be32 (&xcpci->bist_htyp_lat_cshl, (0xf8 << PCI_CFG1_LT_SHIFT));
+
+ out_be32 (&xcpci->base0, PCI_BASE_ADDR_REG0); /* 256MB - MBAR space */
+ out_be32 (&xcpci->base1, PCI_BASE_ADDR_REG1); /* 1GB - SDRAM space */
+
+ out_be32 (&xcpci->target_bar0,
+ PCI_TARGET_BASE_ADDR_REG0 | PCI_TARGET_BASE_ADDR_EN);
+ out_be32 (&xcpci->target_bar1,
+ PCI_TARGET_BASE_ADDR_REG1 | PCI_TARGET_BASE_ADDR_EN);
+
+ /* Deassert reset bit */
+ out_be32 (&xcpci->glb_stat_ctl, 0x00000000);
+
+ /* Enable PCI bus master support */
+ /* Set PCIGNT1, PCIREQ1, PCIREQ0/PCIGNTIN, PCIGNT0/PCIREQOUT,
+ PCIREQ2, PCIGNT2 */
+ out_be32((volatile u32 *)&portcfg->pcfg3,
+ (in_be32((volatile u32 *)&portcfg->pcfg3) & 0xFC3FCE7F));
+ out_be32((volatile u32 *)&portcfg->pcfg3,
+ (in_be32((volatile u32 *)&portcfg->pcfg3) | 0x01400180));
+
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ pci_set_region(hose->regions + 0,
+ CONFIG_PCI_MEM_BUS,
+ CONFIG_PCI_MEM_PHYS,
+ CONFIG_PCI_MEM_SIZE,
+ PCI_REGION_MEM);
+
+ pci_set_region(hose->regions + 1,
+ CONFIG_PCI_IO_BUS,
+ CONFIG_PCI_IO_PHYS,
+ CONFIG_PCI_IO_SIZE,
+ PCI_REGION_IO);
+
+ pci_set_region(hose->regions + 2,
+ CONFIG_PCI_SYS_MEM_BUS,
+ CONFIG_PCI_SYS_MEM_PHYS,
+ CONFIG_PCI_SYS_MEM_SIZE,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+
+ hose->region_count = 3;
+
+ hose->cfg_addr = &(xcpci->cfg_adr);
+ hose->cfg_data = (volatile unsigned char *)CONFIG_PCI_CFG_BUS;
+
+ pci_set_ops(hose,
+ mpc8220_pci_read_config_byte,
+ mpc8220_pci_read_config_word,
+ mpc8220_pci_read_config_dword,
+ mpc8220_pci_write_config_byte,
+ mpc8220_pci_write_config_word,
+ mpc8220_pci_write_config_dword);
+
+ /* Hose scan */
+ pci_register_hose(hose);
+ hose->last_busno = pci_hose_scan(hose);
+
+ out_be32 (&xcpci->base0, PCI_BASE_ADDR_REG0); /* 256MB - MBAR space */
+ out_be32 (&xcpci->base1, PCI_BASE_ADDR_REG1); /* 1GB - SDRAM space */
+}
+
+#endif /* CONFIG_PCI */
diff --git a/arch/ppc/cpu/mpc8220/speed.c b/arch/ppc/cpu/mpc8220/speed.c
new file mode 100644
index 0000000..62ac845
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/speed.c
@@ -0,0 +1,123 @@
+/*
+ * (C) Copyright 2004, Freescale, Inc
+ * TsiChung Liew, Tsi-Chung.Liew@freescale.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <mpc8220.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+typedef struct pllmultiplier {
+ u8 hid1;
+ int multi;
+ int vco_div;
+} pllcfg_t;
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ *
+ */
+
+int get_clocks (void)
+{
+ pllcfg_t bus2core[] = {
+ {0x02, 2, 8}, /* 1 */
+ {0x01, 2, 4},
+ {0x0C, 3, 8}, /* 1.5 */
+ {0x00, 3, 4},
+ {0x18, 3, 2},
+ {0x05, 4, 4}, /* 2 */
+ {0x04, 4, 2},
+ {0x11, 5, 4}, /* 2.5 */
+ {0x06, 5, 2},
+ {0x10, 6, 4}, /* 3 */
+ {0x08, 6, 2},
+ {0x0E, 7, 2}, /* 3.5 */
+ {0x0A, 8, 2}, /* 4 */
+ {0x07, 9, 2}, /* 4.5 */
+ {0x0B, 10, 2}, /* 5 */
+ {0x09, 11, 2}, /* 5.5 */
+ {0x0D, 12, 2}, /* 6 */
+ {0x12, 13, 2}, /* 6.5 */
+ {0x14, 14, 2}, /* 7 */
+ {0x16, 15, 2}, /* 7.5 */
+ {0x1C, 16, 2} /* 8 */
+ };
+ u32 hid1;
+ int i, size, pci2bus;
+
+#if !defined(CONFIG_SYS_MPC8220_CLKIN)
+#error clock measuring not implemented yet - define CONFIG_SYS_MPC8220_CLKIN
+#endif
+
+ gd->inp_clk = CONFIG_SYS_MPC8220_CLKIN;
+
+ /* Read XLB to PCI(INP) clock multiplier */
+ pci2bus = (*((volatile u32 *)PCI_REG_PCIGSCR) &
+ PCI_REG_PCIGSCR_PCI2XLB_CLK_MASK)>>PCI_REG_PCIGSCR_PCI2XLB_CLK_BIT;
+
+ /* XLB bus clock */
+ gd->bus_clk = CONFIG_SYS_MPC8220_CLKIN * pci2bus;
+
+ /* PCI clock is same as input clock */
+ gd->pci_clk = CONFIG_SYS_MPC8220_CLKIN;
+
+ /* FlexBus is temporary set as the same as input clock */
+ /* will do dynamic in the future */
+ gd->flb_clk = CONFIG_SYS_MPC8220_CLKIN;
+
+ /* CPU Clock - Read HID1 */
+ asm volatile ("mfspr %0, 1009":"=r" (hid1):);
+
+ size = sizeof (bus2core) / sizeof (pllcfg_t);
+
+ hid1 >>= 27;
+
+ for (i = 0; i < size; i++)
+ if (hid1 == bus2core[i].hid1) {
+ gd->cpu_clk = (bus2core[i].multi * gd->bus_clk) >> 1;
+ gd->vco_clk = CONFIG_SYS_MPC8220_SYSPLL_VCO_MULTIPLIER * (gd->pci_clk * bus2core[i].vco_div)/2;
+ break;
+ }
+
+ /* hardcoded 81MHz for now */
+ gd->pev_clk = 81000000;
+
+ return (0);
+}
+
+int prt_mpc8220_clks (void)
+{
+ char buf1[32], buf2[32], buf3[32], buf4[32];
+
+ printf (" Bus %s MHz, CPU %s MHz, PCI %s MHz, VCO %s MHz\n",
+ strmhz(buf1, gd->bus_clk),
+ strmhz(buf2, gd->cpu_clk),
+ strmhz(buf3, gd->pci_clk),
+ strmhz(buf4, gd->vco_clk)
+ );
+ return (0);
+}
+
+/* ------------------------------------------------------------------------- */
diff --git a/arch/ppc/cpu/mpc8220/start.S b/arch/ppc/cpu/mpc8220/start.S
new file mode 100644
index 0000000..e28999d
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/start.S
@@ -0,0 +1,750 @@
+/*
+ * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (C) 2000 - 2003 Wolfgang Denk <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * U-Boot - Startup Code for MPC8220 CPUs
+ */
+#include <config.h>
+#include <mpc8220.h>
+#include <timestamp.h>
+#include <version.h>
+
+#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+/* We don't want the MMU yet.
+*/
+#undef MSR_KERNEL
+/* Floating Point enable, Machine Check and Recoverable Interr. */
+#ifdef DEBUG
+#define MSR_KERNEL (MSR_FP|MSR_RI)
+#else
+#define MSR_KERNEL (MSR_FP|MSR_ME|MSR_RI)
+#endif
+
+/*
+ * Set up GOT: Global Offset Table
+ *
+ * Use r12 to access the GOT
+ */
+ START_GOT
+ GOT_ENTRY(_GOT2_TABLE_)
+ GOT_ENTRY(_FIXUP_TABLE_)
+
+ GOT_ENTRY(_start)
+ GOT_ENTRY(_start_of_vectors)
+ GOT_ENTRY(_end_of_vectors)
+ GOT_ENTRY(transfer_to_handler)
+
+ GOT_ENTRY(__init_end)
+ GOT_ENTRY(_end)
+ GOT_ENTRY(__bss_start)
+ END_GOT
+
+/*
+ * Version string
+ */
+ .data
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"
+
+/*
+ * Exception vectors
+ */
+ .text
+ . = EXC_OFF_SYS_RESET
+ .globl _start
+_start:
+ li r21, BOOTFLAG_COLD /* Normal Power-On */
+ nop
+ b boot_cold
+
+ . = EXC_OFF_SYS_RESET + 0x10
+
+ .globl _start_warm
+_start_warm:
+ li r21, BOOTFLAG_WARM /* Software reboot */
+ b boot_warm
+
+boot_cold:
+boot_warm:
+ mfmsr r5 /* save msr contents */
+
+ /* replace default MBAR base address from 0x80000000
+ to 0xf0000000 */
+
+#if defined(CONFIG_SYS_DEFAULT_MBAR) && !defined(CONFIG_SYS_RAMBOOT)
+ lis r3, CONFIG_SYS_MBAR@h
+ ori r3, r3, CONFIG_SYS_MBAR@l
+
+ /* MBAR is mirrored into the MBAR SPR */
+ mtspr MBAR,r3
+ mtspr SPRN_SPRG7W,r3
+ lis r4, CONFIG_SYS_DEFAULT_MBAR@h
+ stw r3, 0(r4)
+#endif /* CONFIG_SYS_DEFAULT_MBAR */
+
+ /* Initialise the MPC8220 processor core */
+ /*--------------------------------------------------------------*/
+
+ bl init_8220_core
+
+ /* initialize some things that are hard to access from C */
+ /*--------------------------------------------------------------*/
+
+ /* set up stack in on-chip SRAM */
+ lis r3, CONFIG_SYS_INIT_RAM_ADDR@h
+ ori r3, r3, CONFIG_SYS_INIT_RAM_ADDR@l
+ ori r1, r3, CONFIG_SYS_INIT_SP_OFFSET
+
+ li r0, 0 /* Make room for stack frame header and */
+ stwu r0, -4(r1) /* clear final stack frame so that */
+ stwu r0, -4(r1) /* stack backtraces terminate cleanly */
+
+ /* let the C-code set up the rest */
+ /* */
+ /* Be careful to keep code relocatable ! */
+ /*--------------------------------------------------------------*/
+
+ GET_GOT /* initialize GOT access */
+
+ /* r3: IMMR */
+ bl cpu_init_f /* run low-level CPU init code (in Flash)*/
+
+ mr r3, r21
+ /* r3: BOOTFLAG */
+ bl board_init_f /* run 1st part of board init code (in Flash)*/
+
+/*
+ * Vector Table
+ */
+
+ .globl _start_of_vectors
+_start_of_vectors:
+
+/* Machine check */
+ STD_EXCEPTION(0x200, MachineCheck, MachineCheckException)
+
+/* Data Storage exception. */
+ STD_EXCEPTION(0x300, DataStorage, UnknownException)
+
+/* Instruction Storage exception. */
+ STD_EXCEPTION(0x400, InstStorage, UnknownException)
+
+/* External Interrupt exception. */
+ STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
+
+/* Alignment exception. */
+ . = 0x600
+Alignment:
+ EXCEPTION_PROLOG(SRR0, SRR1)
+ mfspr r4,DAR
+ stw r4,_DAR(r21)
+ mfspr r5,DSISR
+ stw r5,_DSISR(r21)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ EXC_XFER_TEMPLATE(Alignment, AlignmentException, MSR_KERNEL, COPY_EE)
+
+/* Program check exception */
+ . = 0x700
+ProgramCheck:
+ EXCEPTION_PROLOG(SRR0, SRR1)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ EXC_XFER_TEMPLATE(ProgramCheck, ProgramCheckException,
+ MSR_KERNEL, COPY_EE)
+
+ STD_EXCEPTION(0x800, FPUnavailable, UnknownException)
+
+ /* I guess we could implement decrementer, and may have
+ * to someday for timekeeping.
+ */
+ STD_EXCEPTION(0x900, Decrementer, timer_interrupt)
+
+ STD_EXCEPTION(0xa00, Trap_0a, UnknownException)
+ STD_EXCEPTION(0xb00, Trap_0b, UnknownException)
+ STD_EXCEPTION(0xc00, SystemCall, UnknownException)
+ STD_EXCEPTION(0xd00, SingleStep, UnknownException)
+
+ STD_EXCEPTION(0xe00, Trap_0e, UnknownException)
+ STD_EXCEPTION(0xf00, Trap_0f, UnknownException)
+
+ STD_EXCEPTION(0x1000, InstructionTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1100, DataLoadTLBMiss, UnknownException)
+ STD_EXCEPTION(0x1200, DataStoreTLBMiss, UnknownException)
+#ifdef DEBUG
+ . = 0x1300
+ /*
+ * This exception occurs when the program counter matches the
+ * Instruction Address Breakpoint Register (IABR).
+ *
+ * I want the cpu to halt if this occurs so I can hunt around
+ * with the debugger and look at things.
+ *
+ * When DEBUG is defined, both machine check enable (in the MSR)
+ * and checkstop reset enable (in the reset mode register) are
+ * turned off and so a checkstop condition will result in the cpu
+ * halting.
+ *
+ * I force the cpu into a checkstop condition by putting an illegal
+ * instruction here (at least this is the theory).
+ *
+ * well - that didnt work, so just do an infinite loop!
+ */
+1: b 1b
+#else
+ STD_EXCEPTION(0x1300, InstructionBreakpoint, DebugException)
+#endif
+ STD_EXCEPTION(0x1400, SMI, UnknownException)
+
+ STD_EXCEPTION(0x1500, Trap_15, UnknownException)
+ STD_EXCEPTION(0x1600, Trap_16, UnknownException)
+ STD_EXCEPTION(0x1700, Trap_17, UnknownException)
+ STD_EXCEPTION(0x1800, Trap_18, UnknownException)
+ STD_EXCEPTION(0x1900, Trap_19, UnknownException)
+ STD_EXCEPTION(0x1a00, Trap_1a, UnknownException)
+ STD_EXCEPTION(0x1b00, Trap_1b, UnknownException)
+ STD_EXCEPTION(0x1c00, Trap_1c, UnknownException)
+ STD_EXCEPTION(0x1d00, Trap_1d, UnknownException)
+ STD_EXCEPTION(0x1e00, Trap_1e, UnknownException)
+ STD_EXCEPTION(0x1f00, Trap_1f, UnknownException)
+ STD_EXCEPTION(0x2000, Trap_20, UnknownException)
+ STD_EXCEPTION(0x2100, Trap_21, UnknownException)
+ STD_EXCEPTION(0x2200, Trap_22, UnknownException)
+ STD_EXCEPTION(0x2300, Trap_23, UnknownException)
+ STD_EXCEPTION(0x2400, Trap_24, UnknownException)
+ STD_EXCEPTION(0x2500, Trap_25, UnknownException)
+ STD_EXCEPTION(0x2600, Trap_26, UnknownException)
+ STD_EXCEPTION(0x2700, Trap_27, UnknownException)
+ STD_EXCEPTION(0x2800, Trap_28, UnknownException)
+ STD_EXCEPTION(0x2900, Trap_29, UnknownException)
+ STD_EXCEPTION(0x2a00, Trap_2a, UnknownException)
+ STD_EXCEPTION(0x2b00, Trap_2b, UnknownException)
+ STD_EXCEPTION(0x2c00, Trap_2c, UnknownException)
+ STD_EXCEPTION(0x2d00, Trap_2d, UnknownException)
+ STD_EXCEPTION(0x2e00, Trap_2e, UnknownException)
+ STD_EXCEPTION(0x2f00, Trap_2f, UnknownException)
+
+
+ .globl _end_of_vectors
+_end_of_vectors:
+
+ . = 0x3000
+
+/*
+ * This code finishes saving the registers to the exception frame
+ * and jumps to the appropriate handler for the exception.
+ * Register r21 is pointer into trap frame, r1 has new stack pointer.
+ */
+ .globl transfer_to_handler
+transfer_to_handler:
+ stw r22,_NIP(r21)
+ lis r22,MSR_POW@h
+ andc r23,r23,r22
+ stw r23,_MSR(r21)
+ SAVE_GPR(7, r21)
+ SAVE_4GPRS(8, r21)
+ SAVE_8GPRS(12, r21)
+ SAVE_8GPRS(24, r21)
+ mflr r23
+ andi. r24,r23,0x3f00 /* get vector offset */
+ stw r24,TRAP(r21)
+ li r22,0
+ stw r22,RESULT(r21)
+ lwz r24,0(r23) /* virtual address of handler */
+ lwz r23,4(r23) /* where to go when done */
+ mtspr SRR0,r24
+ mtspr SRR1,r20
+ mtlr r23
+ SYNC
+ rfi /* jump to handler, enable MMU */
+
+int_return:
+ mfmsr r28 /* Disable interrupts */
+ li r4,0
+ ori r4,r4,MSR_EE
+ andc r28,r28,r4
+ SYNC /* Some chip revs need this... */
+ mtmsr r28
+ SYNC
+ lwz r2,_CTR(r1)
+ lwz r0,_LINK(r1)
+ mtctr r2
+ mtlr r0
+ lwz r2,_XER(r1)
+ lwz r0,_CCR(r1)
+ mtspr XER,r2
+ mtcrf 0xFF,r0
+ REST_10GPRS(3, r1)
+ REST_10GPRS(13, r1)
+ REST_8GPRS(23, r1)
+ REST_GPR(31, r1)
+ lwz r2,_NIP(r1) /* Restore environment */
+ lwz r0,_MSR(r1)
+ mtspr SRR0,r2
+ mtspr SRR1,r0
+ lwz r0,GPR0(r1)
+ lwz r2,GPR2(r1)
+ lwz r1,GPR1(r1)
+ SYNC
+ rfi
+
+/*
+ * This code initialises the MPC8220 processor core
+ * (conforms to PowerPC 603e spec)
+ * Note: expects original MSR contents to be in r5.
+ */
+
+ .globl init_8220_core
+init_8220_core:
+
+ /* Initialize machine status; enable machine check interrupt */
+ /*--------------------------------------------------------------*/
+
+ li r3, MSR_KERNEL /* Set ME and RI flags */
+ rlwimi r3, r5, 0, 25, 25 /* preserve IP bit set by HRCW */
+#ifdef DEBUG
+ rlwimi r3, r5, 0, 21, 22 /* debugger might set SE & BE bits */
+#endif
+ SYNC /* Some chip revs need this... */
+ mtmsr r3
+ SYNC
+ mtspr SRR1, r3 /* Make SRR1 match MSR */
+
+ /* Initialize the Hardware Implementation-dependent Registers */
+ /* HID0 also contains cache control */
+ /*--------------------------------------------------------------*/
+
+ lis r3, CONFIG_SYS_HID0_INIT@h
+ ori r3, r3, CONFIG_SYS_HID0_INIT@l
+ SYNC
+ mtspr HID0, r3
+
+ lis r3, CONFIG_SYS_HID0_FINAL@h
+ ori r3, r3, CONFIG_SYS_HID0_FINAL@l
+ SYNC
+ mtspr HID0, r3
+
+ /* Enable Extra BATs */
+ mfspr r3, 1011 /* HID2 */
+ lis r4, 0x0004
+ ori r4, r4, 0x0000
+ or r4, r4, r3
+ mtspr 1011, r4
+ sync
+
+ /* clear all BAT's */
+ /*--------------------------------------------------------------*/
+
+ li r0, 0
+ mtspr DBAT0U, r0
+ mtspr DBAT0L, r0
+ mtspr DBAT1U, r0
+ mtspr DBAT1L, r0
+ mtspr DBAT2U, r0
+ mtspr DBAT2L, r0
+ mtspr DBAT3U, r0
+ mtspr DBAT3L, r0
+ mtspr DBAT4U, r0
+ mtspr DBAT4L, r0
+ mtspr DBAT5U, r0
+ mtspr DBAT5L, r0
+ mtspr DBAT6U, r0
+ mtspr DBAT6L, r0
+ mtspr DBAT7U, r0
+ mtspr DBAT7L, r0
+ mtspr IBAT0U, r0
+ mtspr IBAT0L, r0
+ mtspr IBAT1U, r0
+ mtspr IBAT1L, r0
+ mtspr IBAT2U, r0
+ mtspr IBAT2L, r0
+ mtspr IBAT3U, r0
+ mtspr IBAT3L, r0
+ mtspr IBAT4U, r0
+ mtspr IBAT4L, r0
+ mtspr IBAT5U, r0
+ mtspr IBAT5L, r0
+ mtspr IBAT6U, r0
+ mtspr IBAT6L, r0
+ mtspr IBAT7U, r0
+ mtspr IBAT7L, r0
+ SYNC
+
+ /* invalidate all tlb's */
+ /* */
+ /* From the 603e User Manual: "The 603e provides the ability to */
+ /* invalidate a TLB entry. The TLB Invalidate Entry (tlbie) */
+ /* instruction invalidates the TLB entry indexed by the EA, and */
+ /* operates on both the instruction and data TLBs simultaneously*/
+ /* invalidating four TLB entries (both sets in each TLB). The */
+ /* index corresponds to bits 15-19 of the EA. To invalidate all */
+ /* entries within both TLBs, 32 tlbie instructions should be */
+ /* issued, incrementing this field by one each time." */
+ /* */
+ /* "Note that the tlbia instruction is not implemented on the */
+ /* 603e." */
+ /* */
+ /* bits 15-19 correspond to addresses 0x00000000 to 0x0001F000 */
+ /* incrementing by 0x1000 each time. The code below is sort of */
+ /* based on code in "flush_tlbs" from arch/ppc/kernel/head.S */
+ /* */
+ /*--------------------------------------------------------------*/
+
+ li r3, 32
+ mtctr r3
+ li r3, 0
+1: tlbie r3
+ addi r3, r3, 0x1000
+ bdnz 1b
+ SYNC
+
+ /* Done! */
+ /*--------------------------------------------------------------*/
+
+ blr
+
+/* Cache functions.
+ *
+ * Note: requires that all cache bits in
+ * HID0 are in the low half word.
+ */
+ .globl icache_enable
+icache_enable:
+ lis r4, 0
+ ori r4, r4, CONFIG_SYS_HID0_INIT /* set ICE & ICFI bit */
+ rlwinm r3, r4, 0, 21, 19 /* clear the ICFI bit */
+
+ /*
+ * The setting of the instruction cache enable (ICE) bit must be
+ * preceded by an isync instruction to prevent the cache from being
+ * enabled or disabled while an instruction access is in progress.
+ */
+ isync
+ mtspr HID0, r4 /* Enable Instr Cache & Inval cache */
+ mtspr HID0, r3 /* using 2 consec instructions */
+ isync
+ blr
+
+ .globl icache_disable
+icache_disable:
+ mfspr r3, HID0
+ rlwinm r3, r3, 0, 17, 15 /* clear the ICE bit */
+ mtspr HID0, r3
+ isync
+ blr
+
+ .globl icache_status
+icache_status:
+ mfspr r3, HID0
+ rlwinm r3, r3, HID0_ICE_BITPOS + 1, 31, 31
+ blr
+
+ .globl dcache_enable
+dcache_enable:
+ lis r4, 0
+ ori r4, r4, HID0_DCE|HID0_DCFI /* set DCE & DCFI bit */
+ rlwinm r3, r4, 0, 22, 20 /* clear the DCFI bit */
+
+ /* Enable address translation in MSR bit */
+ mfmsr r5
+ ori r5, r5, 0x
+
+
+ /*
+ * The setting of the instruction cache enable (ICE) bit must be
+ * preceded by an isync instruction to prevent the cache from being
+ * enabled or disabled while an instruction access is in progress.
+ */
+ isync
+ mtspr HID0, r4 /* Enable Data Cache & Inval cache*/
+ mtspr HID0, r3 /* using 2 consec instructions */
+ isync
+ blr
+
+ .globl dcache_disable
+dcache_disable:
+ mfspr r3, HID0
+ rlwinm r3, r3, 0, 18, 16 /* clear the DCE bit */
+ mtspr HID0, r3
+ isync
+ blr
+
+ .globl dcache_status
+dcache_status:
+ mfspr r3, HID0
+ rlwinm r3, r3, HID0_DCE_BITPOS + 1, 31, 31
+ blr
+
+ .globl get_pvr
+get_pvr:
+ mfspr r3, PVR
+ blr
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+ .globl relocate_code
+relocate_code:
+ mr r1, r3 /* Set new stack pointer */
+ mr r9, r4 /* Save copy of Global Data pointer */
+ mr r10, r5 /* Save copy of Destination Address */
+
+ GET_GOT
+ mr r3, r5 /* Destination Address */
+ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */
+ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l
+ lwz r5, GOT(__init_end)
+ sub r5, r5, r4
+ li r6, CONFIG_SYS_CACHELINE_SIZE /* Cache Line Size */
+
+ /*
+ * Fix GOT pointer:
+ *
+ * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address
+ *
+ * Offset:
+ */
+ sub r15, r10, r4
+
+ /* First our own GOT */
+ add r12, r12, r15
+ /* then the one used by the C code */
+ add r30, r30, r15
+
+ /*
+ * Now relocate code
+ */
+
+ cmplw cr1,r3,r4
+ addi r0,r5,3
+ srwi. r0,r0,2
+ beq cr1,4f /* In place copy is not necessary */
+ beq 7f /* Protect against 0 count */
+ mtctr r0
+ bge cr1,2f
+
+ la r8,-4(r4)
+ la r7,-4(r3)
+1: lwzu r0,4(r8)
+ stwu r0,4(r7)
+ bdnz 1b
+ b 4f
+
+2: slwi r0,r0,2
+ add r8,r4,r0
+ add r7,r3,r0
+3: lwzu r0,-4(r8)
+ stwu r0,-4(r7)
+ bdnz 3b
+
+/*
+ * Now flush the cache: note that we must start from a cache aligned
+ * address. Otherwise we might miss one cache line.
+ */
+4: cmpwi r6,0
+ add r5,r3,r5
+ beq 7f /* Always flush prefetch queue in any case */
+ subi r0,r6,1
+ andc r3,r3,r0
+ mfspr r7,HID0 /* don't do dcbst if dcache is disabled */
+ rlwinm r7,r7,HID0_DCE_BITPOS+1,31,31
+ cmpwi r7,0
+ beq 9f
+ mr r4,r3
+5: dcbst 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 5b
+ sync /* Wait for all dcbst to complete on bus */
+9: mfspr r7,HID0 /* don't do icbi if icache is disabled */
+ rlwinm r7,r7,HID0_ICE_BITPOS+1,31,31
+ cmpwi r7,0
+ beq 7f
+ mr r4,r3
+6: icbi 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 6b
+7: sync /* Wait for all icbi to complete on bus */
+ isync
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+
+ addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
+ mtlr r0
+ blr
+
+in_ram:
+
+ /*
+ * Relocation Function, r12 point to got2+0x8000
+ *
+ * Adjust got2 pointers, no need to check for 0, this code
+ * already puts a few entries in the table.
+ */
+ li r0,__got2_entries@sectoff@l
+ la r3,GOT(_GOT2_TABLE_)
+ lwz r11,GOT(_GOT2_TABLE_)
+ mtctr r0
+ sub r11,r3,r11
+ addi r3,r3,-4
+1: lwzu r0,4(r3)
+ cmpwi r0,0
+ beq- 2f
+ add r0,r0,r11
+ stw r0,0(r3)
+2: bdnz 1b
+
+ /*
+ * Now adjust the fixups and the pointers to the fixups
+ * in case we need to move ourselves again.
+ */
+ li r0,__fixup_entries@sectoff@l
+ lwz r3,GOT(_FIXUP_TABLE_)
+ cmpwi r0,0
+ mtctr r0
+ addi r3,r3,-4
+ beq 4f
+3: lwzu r4,4(r3)
+ lwzux r0,r4,r11
+ add r0,r0,r11
+ stw r10,0(r3)
+ stw r0,0(r4)
+ bdnz 3b
+4:
+clear_bss:
+ /*
+ * Now clear BSS segment
+ */
+ lwz r3,GOT(__bss_start)
+ lwz r4,GOT(_end)
+
+ cmplw 0, r3, r4
+ beq 6f
+
+ li r0, 0
+5:
+ stw r0, 0(r3)
+ addi r3, r3, 4
+ cmplw 0, r3, r4
+ bne 5b
+6:
+
+ mr r3, r9 /* Global Data pointer */
+ mr r4, r10 /* Destination Address */
+ bl board_init_r
+
+ /*
+ * Copy exception vector code to low memory
+ *
+ * r3: dest_addr
+ * r7: source address, r8: end address, r9: target address
+ */
+ .globl trap_init
+trap_init:
+ mflr r4 /* save link register */
+ GET_GOT
+ lwz r7, GOT(_start)
+ lwz r8, GOT(_end_of_vectors)
+
+ li r9, 0x100 /* reset vector always at 0x100 */
+
+ cmplw 0, r7, r8
+ bgelr /* return if r7>=r8 - just in case */
+1:
+ lwz r0, 0(r7)
+ stw r0, 0(r9)
+ addi r7, r7, 4
+ addi r9, r9, 4
+ cmplw 0, r7, r8
+ bne 1b
+
+ /*
+ * relocate `hdlr' and `int_return' entries
+ */
+ li r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
+ li r8, Alignment - _start + EXC_OFF_SYS_RESET
+2:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 2b
+
+ li r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
+ li r8, SystemCall - _start + EXC_OFF_SYS_RESET
+3:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 3b
+
+ li r7, .L_SingleStep - _start + EXC_OFF_SYS_RESET
+ li r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
+4:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 4b
+
+ mfmsr r3 /* now that the vectors have */
+ lis r7, MSR_IP@h /* relocated into low memory */
+ ori r7, r7, MSR_IP@l /* MSR[IP] can be turned off */
+ andc r3, r3, r7 /* (if it was on) */
+ SYNC /* Some chip revs need this... */
+ mtmsr r3
+ SYNC
+
+ mtlr r4 /* restore link register */
+ blr
diff --git a/arch/ppc/cpu/mpc8220/traps.c b/arch/ppc/cpu/mpc8220/traps.c
new file mode 100644
index 0000000..4565780
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/traps.c
@@ -0,0 +1,236 @@
+/*
+ * linux/arch/ppc/kernel/traps.c
+ *
+ * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ * Modified by Cort Dougan (cort@cs.nmt.edu)
+ * and Paul Mackerras (paulus@cs.anu.edu.au)
+ * fixed Machine Check Reasons by Reinhard Meyer (r.meyer@emk-elektronik.de)
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * This file handles the architecture-dependent parts of hardware exceptions
+ */
+
+#include <common.h>
+#include <command.h>
+#include <kgdb.h>
+#include <asm/processor.h>
+
+/* Returns 0 if exception not found and fixup otherwise. */
+extern unsigned long search_exception_table (unsigned long);
+
+/* THIS NEEDS CHANGING to use the board info structure.
+*/
+#define END_OF_MEM 0x02000000
+
+/*
+ * Trap & Exception support
+ */
+
+void print_backtrace (unsigned long *sp)
+{
+ int cnt = 0;
+ unsigned long i;
+
+ printf ("Call backtrace: ");
+ while (sp) {
+ if ((uint) sp > END_OF_MEM)
+ break;
+
+ i = sp[1];
+ if (cnt++ % 7 == 0)
+ printf ("\n");
+ printf ("%08lX ", i);
+ if (cnt > 32)
+ break;
+ sp = (unsigned long *) *sp;
+ }
+ printf ("\n");
+}
+
+void show_regs (struct pt_regs *regs)
+{
+ int i;
+
+ printf ("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DAR: %08lX\n",
+ regs->nip, regs->xer, regs->link, regs, regs->trap, regs->dar);
+ printf ("MSR: %08lx EE: %01x PR: %01x FP: %01x ME: %01x IR/DR: %01x%01x\n",
+ regs->msr,
+ regs->msr & MSR_EE ? 1 : 0, regs->msr & MSR_PR ? 1 : 0,
+ regs->msr & MSR_FP ? 1 : 0, regs->msr & MSR_ME ? 1 : 0,
+ regs->msr & MSR_IR ? 1 : 0, regs->msr & MSR_DR ? 1 : 0);
+
+ printf ("\n");
+ for (i = 0; i < 32; i++) {
+ if ((i % 8) == 0) {
+ printf ("GPR%02d: ", i);
+ }
+
+ printf ("%08lX ", regs->gpr[i]);
+ if ((i % 8) == 7) {
+ printf ("\n");
+ }
+ }
+}
+
+
+void _exception (int signr, struct pt_regs *regs)
+{
+ show_regs (regs);
+ print_backtrace ((unsigned long *) regs->gpr[1]);
+ panic ("Exception in kernel pc %lx signal %d", regs->nip, signr);
+}
+
+void MachineCheckException (struct pt_regs *regs)
+{
+ unsigned long fixup;
+
+ /* Probing PCI using config cycles cause this exception
+ * when a device is not present. Catch it and return to
+ * the PCI exception handler.
+ */
+ if ((fixup = search_exception_table (regs->nip)) != 0) {
+ regs->nip = fixup;
+ return;
+ }
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler
+ && (*debugger_exception_handler) (regs))
+ return;
+#endif
+
+ printf ("Machine check in kernel mode.\n");
+ printf ("Caused by (from msr): ");
+ printf ("regs %p ", regs);
+ /* refer to 603e Manual (MPC603EUM/AD), chapter 4.5.2.1 */
+ switch (regs->msr & 0x000F0000) {
+ case (0x80000000 >> 12):
+ printf ("Machine check signal - probably due to mm fault\n"
+ "with mmu off\n");
+ break;
+ case (0x80000000 >> 13):
+ printf ("Transfer error ack signal\n");
+ break;
+ case (0x80000000 >> 14):
+ printf ("Data parity signal\n");
+ break;
+ case (0x80000000 >> 15):
+ printf ("Address parity signal\n");
+ break;
+ default:
+ printf ("Unknown values in msr\n");
+ }
+ show_regs (regs);
+ print_backtrace ((unsigned long *) regs->gpr[1]);
+ panic ("machine check");
+}
+
+void AlignmentException (struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler
+ && (*debugger_exception_handler) (regs))
+ return;
+#endif
+ show_regs (regs);
+ print_backtrace ((unsigned long *) regs->gpr[1]);
+ panic ("Alignment Exception");
+}
+
+void ProgramCheckException (struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler
+ && (*debugger_exception_handler) (regs))
+ return;
+#endif
+ show_regs (regs);
+ print_backtrace ((unsigned long *) regs->gpr[1]);
+ panic ("Program Check Exception");
+}
+
+void SoftEmuException (struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler
+ && (*debugger_exception_handler) (regs))
+ return;
+#endif
+ show_regs (regs);
+ print_backtrace ((unsigned long *) regs->gpr[1]);
+ panic ("Software Emulation Exception");
+}
+
+
+void UnknownException (struct pt_regs *regs)
+{
+#if defined(CONFIG_CMD_KGDB)
+ if (debugger_exception_handler
+ && (*debugger_exception_handler) (regs))
+ return;
+#endif
+ printf ("Bad trap at PC: %lx, SR: %lx, vector=%lx\n",
+ regs->nip, regs->msr, regs->trap);
+ _exception (0, regs);
+}
+
+#if defined(CONFIG_CMD_BEDBUG)
+extern void do_bedbug_breakpoint (struct pt_regs *);
+#endif
+
+void DebugException (struct pt_regs *regs)
+{
+
+ printf ("Debugger trap at @ %lx\n", regs->nip);
+ show_regs (regs);
+#if defined(CONFIG_CMD_BEDBUG)
+ do_bedbug_breakpoint (regs);
+#endif
+}
+
+/* Probe an address by reading. If not present, return -1, otherwise
+ * return 0.
+ */
+int addr_probe (uint * addr)
+{
+#if 0
+ int retval;
+
+ __asm__ __volatile__ ("1: lwz %0,0(%1)\n"
+ " eieio\n"
+ " li %0,0\n"
+ "2:\n"
+ ".section .fixup,\"ax\"\n"
+ "3: li %0,-1\n"
+ " b 2b\n"
+ ".section __ex_table,\"a\"\n"
+ " .align 2\n"
+ " .long 1b,3b\n"
+ ".text":"=r" (retval):"r" (addr));
+
+ return (retval);
+#endif
+ return 0;
+}
diff --git a/arch/ppc/cpu/mpc8220/u-boot.lds b/arch/ppc/cpu/mpc8220/u-boot.lds
new file mode 100644
index 0000000..8c5d307
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/u-boot.lds
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2003-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_ARCH(powerpc)
+/* Do we need any of these for elf?
+ __DYNAMIC = 0; */
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ . = + SIZEOF_HEADERS;
+ .interp : { *(.interp) }
+ .hash : { *(.hash) }
+ .dynsym : { *(.dynsym) }
+ .dynstr : { *(.dynstr) }
+ .rel.text : { *(.rel.text) }
+ .rela.text : { *(.rela.text) }
+ .rel.data : { *(.rel.data) }
+ .rela.data : { *(.rela.data) }
+ .rel.rodata : { *(.rel.rodata) }
+ .rela.rodata : { *(.rela.rodata) }
+ .rel.got : { *(.rel.got) }
+ .rela.got : { *(.rela.got) }
+ .rel.ctors : { *(.rel.ctors) }
+ .rela.ctors : { *(.rela.ctors) }
+ .rel.dtors : { *(.rel.dtors) }
+ .rela.dtors : { *(.rela.dtors) }
+ .rel.bss : { *(.rel.bss) }
+ .rela.bss : { *(.rela.bss) }
+ .rel.plt : { *(.rel.plt) }
+ .rela.plt : { *(.rela.plt) }
+ .init : { *(.init) }
+ .plt : { *(.plt) }
+ .text :
+ {
+ arch/ppc/cpu/mpc8220/start.o (.text)
+ *(.text)
+ *(.got1)
+ . = ALIGN(16);
+ *(.eh_frame)
+ *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+ }
+ .fini : { *(.fini) } =0
+ .ctors : { *(.ctors) }
+ .dtors : { *(.dtors) }
+
+ /* Read-write section, merged into data segment: */
+ . = (. + 0x0FFF) & 0xFFFFF000;
+ _erotext = .;
+ PROVIDE (erotext = .);
+ .reloc :
+ {
+ *(.got)
+ _GOT2_TABLE_ = .;
+ *(.got2)
+ _FIXUP_TABLE_ = .;
+ *(.fixup)
+ }
+ __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >> 2;
+ __fixup_entries = (. - _FIXUP_TABLE_) >> 2;
+
+ .data :
+ {
+ *(.data)
+ *(.data1)
+ *(.sdata)
+ *(.sdata2)
+ *(.dynamic)
+ CONSTRUCTORS
+ }
+ _edata = .;
+ PROVIDE (edata = .);
+
+ . = .;
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+
+ . = .;
+ __start___ex_table = .;
+ __ex_table : { *(__ex_table) }
+ __stop___ex_table = .;
+
+ . = ALIGN(4096);
+ __init_begin = .;
+ .text.init : { *(.text.init) }
+ .data.init : { *(.data.init) }
+ . = ALIGN(4096);
+ __init_end = .;
+
+ __bss_start = .;
+ .bss (NOLOAD) :
+ {
+ *(.sbss) *(.scommon)
+ *(.dynbss)
+ *(.bss)
+ *(COMMON)
+ . = ALIGN(4);
+ }
+ _end = . ;
+ PROVIDE (end = .);
+}
diff --git a/arch/ppc/cpu/mpc8220/uart.c b/arch/ppc/cpu/mpc8220/uart.c
new file mode 100644
index 0000000..0c4b536
--- /dev/null
+++ b/arch/ppc/cpu/mpc8220/uart.c
@@ -0,0 +1,126 @@
+/*
+ * (C) Copyright 2004, Freescale, Inc
+ * TsiChung Liew, Tsi-Chung.Liew@freescale.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+/*
+ * Minimal serial functions needed to use one of the PSC ports
+ * as serial console interface.
+ */
+
+#include <common.h>
+#include <mpc8220.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define PSC_BASE MMAP_PSC1
+
+#if defined(CONFIG_PSC_CONSOLE)
+int serial_init (void)
+{
+ volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
+ u32 counter;
+
+ /* write to SICR: SIM2 = uart mode,dcd does not affect rx */
+ psc->cr = 0;
+ psc->ipcr_acr = 0;
+ psc->isr_imr = 0;
+
+ /* write to CSR: RX/TX baud rate from timers */
+ psc->sr_csr = 0xdd000000;
+
+ psc->mr1_2 = PSC_MR1_BITS_CHAR_8 | PSC_MR1_NO_PARITY | PSC_MR2_STOP_BITS_1;
+
+ /* Setting up BaudRate */
+ counter = ((gd->bus_clk / gd->baudrate)) >> 5;
+ counter++;
+
+ /* write to CTUR: divide counter upper byte */
+ psc->ctur = ((counter & 0xff00) << 16);
+ /* write to CTLR: divide counter lower byte */
+ psc->ctlr = ((counter & 0x00ff) << 24);
+
+ psc->cr = PSC_CR_RST_RX_CMD;
+ psc->cr = PSC_CR_RST_TX_CMD;
+ psc->cr = PSC_CR_RST_ERR_STS_CMD;
+ psc->cr = PSC_CR_RST_BRK_INT_CMD;
+ psc->cr = PSC_CR_RST_MR_PTR_CMD;
+
+ psc->cr = PSC_CR_RX_ENABLE | PSC_CR_TX_ENABLE;
+ return (0);
+}
+
+void serial_putc (const char c)
+{
+ volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
+
+ if (c == '\n')
+ serial_putc ('\r');
+
+ /* Wait for last character to go. */
+ while (!(psc->sr_csr & PSC_SR_TXRDY));
+
+ psc->xmitbuf[0] = c;
+}
+
+void serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
+
+int serial_getc (void)
+{
+ volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
+
+ /* Wait for a character to arrive. */
+ while (!(psc->sr_csr & PSC_SR_RXRDY));
+ return psc->xmitbuf[2];
+}
+
+int serial_tstc (void)
+{
+ volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
+
+ return (psc->sr_csr & PSC_SR_RXRDY);
+}
+
+void serial_setbrg (void)
+{
+ volatile psc8220_t *psc = (psc8220_t *) PSC_BASE;
+ u32 counter;
+
+ counter = ((gd->bus_clk / gd->baudrate)) >> 5;
+ counter++;
+
+ /* write to CTUR: divide counter upper byte */
+ psc->ctur = ((counter & 0xff00) << 16);
+ /* write to CTLR: divide counter lower byte */
+ psc->ctlr = ((counter & 0x00ff) << 24);
+
+ psc->cr = PSC_CR_RST_RX_CMD;
+ psc->cr = PSC_CR_RST_TX_CMD;
+
+ psc->cr = PSC_CR_RX_ENABLE | PSC_CR_TX_ENABLE;
+}
+#endif /* CONFIG_PSC_CONSOLE */
generated by cgit v1.1 at 2024-12-21 16:55:44 +0000