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-rw-r--r--cpu/coldfire/Makefile45
-rw-r--r--cpu/coldfire/config.mk26
-rw-r--r--cpu/coldfire/cpu.c87
-rw-r--r--cpu/coldfire/fec.c300
-rw-r--r--cpu/coldfire/fec.h28
-rw-r--r--cpu/coldfire/interrupts.c127
-rw-r--r--cpu/coldfire/serial.c168
-rw-r--r--cpu/coldfire/speed.c35
-rw-r--r--cpu/coldfire/start.S165
9 files changed, 981 insertions, 0 deletions
diff --git a/cpu/coldfire/Makefile b/cpu/coldfire/Makefile
new file mode 100644
index 0000000..085d840
--- /dev/null
+++ b/cpu/coldfire/Makefile
@@ -0,0 +1,45 @@
+#
+# (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 $(TOPDIR)/config.mk
+
+# CFLAGS += -DET_DEBUG
+
+LIB = lib$(CPU).a
+
+START =
+OBJS = kgdb.o serial.o interrupts.o cpu.o speed.o cpu_init.o fec.o
+
+all: .depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) crv $@ $(OBJS) kgdb.o
+
+#########################################################################
+
+.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/cpu/coldfire/config.mk b/cpu/coldfire/config.mk
new file mode 100644
index 0000000..72b33ce
--- /dev/null
+++ b/cpu/coldfire/config.mk
@@ -0,0 +1,26 @@
+#
+# (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
+#
+
+PLATFORM_RELFLAGS +=
+
+PLATFORM_CPPFLAGS += -m5200
diff --git a/cpu/coldfire/cpu.c b/cpu/coldfire/cpu.c
new file mode 100644
index 0000000..5ce0639
--- /dev/null
+++ b/cpu/coldfire/cpu.c
@@ -0,0 +1,87 @@
+/*
+ * (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 <watchdog.h>
+#include <command.h>
+#ifdef CONFIG_M5272
+#include <asm/m5272.h>
+#endif
+#ifdef CONFIG_M5282
+#include <asm/m5282.h>
+#endif
+#include <asm/cache.h>
+
+int do_reset (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
+{
+ return 0;
+}
+
+unsigned long get_tbclk (void)
+{
+ return CFG_HZ;
+}
+
+int checkcpu (void)
+{
+#ifdef CONFIG_M5272
+ puts ("MOTOROLA Coldfire MCF5272\n");
+#endif
+#ifdef CONFIG_M5282
+ puts ("MOTOROLA Coldfire MCF5282\n");
+#endif
+ return 0;
+}
+
+void do_exception (void)
+{
+ printf ("\n\n*** Unexpected exception ... Reset Board! ***\n");
+ for (;;);
+}
+
+void do_buserror (void)
+{
+ printf ("\n\n*** Bus error ... Reset Board! ***\n");
+ for (;;);
+}
+
+void do_addresserror (void)
+{
+ printf ("\n\n*** Address error ... Reset Board! ***\n");
+ for (;;);
+}
+
+void trap_init (ulong value)
+{
+ extern void buserror_handler (void);
+ extern void addresserror_handler (void);
+ extern void exception_handler (void);
+ unsigned long *vec = 0;
+ int i;
+
+ vec[2] = buserror_handler;
+ vec[3] = addresserror_handler;
+ for (i = 4; i < 256; i++) {
+ vec[i] = exception_handler;
+ }
+}
diff --git a/cpu/coldfire/fec.c b/cpu/coldfire/fec.c
new file mode 100644
index 0000000..53a93c1
--- /dev/null
+++ b/cpu/coldfire/fec.c
@@ -0,0 +1,300 @@
+/*
+ * (C) Copyright 2000
+ * 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 <commproc.h>
+#include <net.h>
+#include <command.h>
+
+
+
+/**************************************************************
+ *
+ * FEC Ethernet Initialization Routine
+ *
+ *************************************************************/
+
+#define FEC_ECNTRL_ETHER_EN 0x00000002
+#define FEC_ECNTRL_RESET 0x00000001
+
+#define FEC_RCNTRL_BC_REJ 0x00000010
+#define FEC_RCNTRL_PROM 0x00000008
+#define FEC_RCNTRL_MII_MODE 0x00000004
+#define FEC_RCNTRL_DRT 0x00000002
+#define FEC_RCNTRL_LOOP 0x00000001
+
+#define FEC_TCNTRL_FDEN 0x00000004
+#define FEC_TCNTRL_HBC 0x00000002
+#define FEC_TCNTRL_GTS 0x00000001
+
+#define FEC_RESET_DELAY 50000
+
+
+
+/* Ethernet Transmit and Receive Buffers */
+#define DBUF_LENGTH 1520
+
+#define TX_BUF_CNT 2
+
+#define TOUT_LOOP 100
+
+#define PKT_MAXBUF_SIZE 1518
+#define PKT_MINBUF_SIZE 64
+#define PKT_MAXBLR_SIZE 1520
+
+
+
+#ifdef CONFIG_M5272
+#define FEC_ADDR 0x10000840
+#endif
+#ifdef CONFIG_M5282
+#define FEC_ADDR 0x40001000
+#endif
+
+#undef ET_DEBUG
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(FEC_ENET)
+
+
+
+static char txbuf[DBUF_LENGTH];
+
+static uint rxIdx; /* index of the current RX buffer */
+static uint txIdx; /* index of the current TX buffer */
+
+/*
+ * FEC Ethernet Tx and Rx buffer descriptors allocated at the
+ * immr->udata_bd address on Dual-Port RAM
+ * Provide for Double Buffering
+ */
+
+typedef volatile struct CommonBufferDescriptor {
+ cbd_t rxbd[PKTBUFSRX]; /* Rx BD */
+ cbd_t txbd[TX_BUF_CNT]; /* Tx BD */
+} RTXBD;
+
+static RTXBD *rtx = 0x380000;
+
+
+int eth_send(volatile void *packet, int length)
+{
+ int j, rc;
+ volatile fec_t *fecp = FEC_ADDR;
+
+ /* section 16.9.23.3
+ * Wait for ready
+ */
+ j = 0;
+ while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
+ udelay(1);
+ j++;
+ }
+ if (j>=TOUT_LOOP) {
+ printf("TX not ready\n");
+ }
+
+ rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
+ rtx->txbd[txIdx].cbd_datlen = length;
+ rtx->txbd[txIdx].cbd_sc |= BD_ENET_TX_READY | BD_ENET_TX_LAST;
+
+ /* Activate transmit Buffer Descriptor polling */
+ fecp->fec_x_des_active = 0x01000000; /* Descriptor polling active */
+
+ j = 0;
+ while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
+ udelay(1);
+ j++;
+ }
+ if (j>=TOUT_LOOP) {
+ printf("TX timeout\n");
+ }
+#ifdef ET_DEBUG
+ printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
+ __FILE__,__LINE__,__FUNCTION__,j,rtx->txbd[txIdx].cbd_sc,
+ (rtx->txbd[txIdx].cbd_sc & 0x003C)>>2);
+#endif
+ /* return only status bits */;
+ rc = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS);
+
+ txIdx = (txIdx + 1) % TX_BUF_CNT;
+
+ return rc;
+}
+
+int eth_rx(void)
+{
+ int length;
+ volatile fec_t *fecp = FEC_ADDR;
+
+ for (;;)
+ {
+ /* section 16.9.23.2 */
+ if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
+ length = -1;
+ break; /* nothing received - leave for() loop */
+ }
+
+ length = rtx->rxbd[rxIdx].cbd_datlen;
+
+ if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
+#ifdef ET_DEBUG
+ printf("%s[%d] err: %x\n",
+ __FUNCTION__,__LINE__,rtx->rxbd[rxIdx].cbd_sc);
+#endif
+ } else {
+ /* Pass the packet up to the protocol layers. */
+ NetReceive(NetRxPackets[rxIdx], length - 4);
+ }
+
+ /* Give the buffer back to the FEC. */
+ rtx->rxbd[rxIdx].cbd_datlen = 0;
+
+ /* wrap around buffer index when necessary */
+ if ((rxIdx + 1) >= PKTBUFSRX) {
+ rtx->rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
+ rxIdx = 0;
+ } else {
+ rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
+ rxIdx++;
+ }
+
+ /* Try to fill Buffer Descriptors */
+ fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
+ }
+
+ return length;
+}
+
+
+int eth_init (bd_t * bd)
+{
+
+ int i;
+ volatile fec_t *fecp = FEC_ADDR;
+
+ /* Whack a reset.
+ * A delay is required between a reset of the FEC block and
+ * initialization of other FEC registers because the reset takes
+ * some time to complete. If you don't delay, subsequent writes
+ * to FEC registers might get killed by the reset routine which is
+ * still in progress.
+ */
+
+ fecp->fec_ecntrl = FEC_ECNTRL_RESET;
+ for (i = 0;
+ (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
+ ++i) {
+ udelay (1);
+ }
+ if (i == FEC_RESET_DELAY) {
+ printf ("FEC_RESET_DELAY timeout\n");
+ return 0;
+ }
+
+ /* We use strictly polling mode only
+ */
+ fecp->fec_imask = 0;
+
+ /* Clear any pending interrupt */
+ fecp->fec_ievent = 0xffffffff;
+
+ /* Set station address */
+#define ea bd->bi_enetaddr
+ fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) |
+ (ea[2] << 8) | (ea[3] ) ;
+ fecp->fec_addr_high = (ea[4] << 24) | (ea[5] << 16 ) ;
+#undef ea
+
+ /* Clear multicast address hash table
+ */
+ fecp->fec_hash_table_high = 0;
+ fecp->fec_hash_table_low = 0;
+
+ /* Set maximum receive buffer size.
+ */
+ fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
+
+ /*
+ * Setup Buffers and Buffer Desriptors
+ */
+ rxIdx = 0;
+ txIdx = 0;
+
+ /*
+ * Setup Receiver Buffer Descriptors (13.14.24.18)
+ * Settings:
+ * Empty, Wrap
+ */
+ for (i = 0; i < PKTBUFSRX; i++) {
+ rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
+ rtx->rxbd[i].cbd_datlen = 0; /* Reset */
+ rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
+ }
+ rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
+
+ /*
+ * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
+ * Settings:
+ * Last, Tx CRC
+ */
+ for (i = 0; i < TX_BUF_CNT; i++) {
+ rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
+ rtx->txbd[i].cbd_datlen = 0; /* Reset */
+ rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
+ }
+ rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
+
+ /* Set receive and transmit descriptor base
+ */
+ fecp->fec_r_des_start = (unsigned int) (&rtx->rxbd[0]);
+ fecp->fec_x_des_start = (unsigned int) (&rtx->txbd[0]);
+
+ /* Enable MII mode
+ */
+
+ /* Half duplex mode */
+ fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE<<16) | FEC_RCNTRL_MII_MODE;
+ fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE<<16) | FEC_RCNTRL_MII_MODE;
+ fecp->fec_x_cntrl = 0;
+
+ fecp->fec_mii_speed = 0;
+
+ /* Now enable the transmit and receive processing
+ */
+ fecp->fec_ecntrl = FEC_ECNTRL_ETHER_EN;
+
+ /* And last, try to fill Rx Buffer Descriptors */
+ fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
+
+ return 1;
+}
+
+
+
+void eth_halt(void)
+{
+ volatile fec_t *fecp = FEC_ADDR;
+ fecp->fec_ecntrl = 0;
+}
+
+#endif
diff --git a/cpu/coldfire/fec.h b/cpu/coldfire/fec.h
new file mode 100644
index 0000000..a49417c
--- /dev/null
+++ b/cpu/coldfire/fec.h
@@ -0,0 +1,28 @@
+/*
+ * (C) Copyright 2000
+ * 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
+ */
+
+#ifndef _FEC_H_
+#define _FEC_H_
+
+
+#endif /* _FEC_H_ */
diff --git a/cpu/coldfire/interrupts.c b/cpu/coldfire/interrupts.c
new file mode 100644
index 0000000..3861ff1
--- /dev/null
+++ b/cpu/coldfire/interrupts.c
@@ -0,0 +1,127 @@
+/*
+ * (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 <watchdog.h>
+#ifdef CONFIG_M5272
+#include <asm/m5272.h>
+#endif
+#ifdef CONFIG_M5282
+#include <asm/m5282.h>
+#endif
+#include <asm/mcftimer.h>
+#include <asm/processor.h>
+#include <commproc.h>
+
+static ulong timestamp;
+static unsigned short lastinc;
+
+void coldfire_timer_init (void)
+{
+ volatile unsigned short *timerp;
+
+ timerp = (volatile unsigned short *) (MCF_MBAR + MCFTIMER_BASE4);
+ timestamp = 0;
+
+#ifdef CONFIG_M5272
+ /* Set up TIMER 4 as poll clock */
+ timerp[MCFTIMER_TMR] = MCFTIMER_TMR_DISABLE;
+ timerp[MCFTIMER_TRR] = lastinc = 0;
+ timerp[MCFTIMER_TMR] = (65 << 8) | MCFTIMER_TMR_CLK1 |
+ MCFTIMER_TMR_FREERUN | MCFTIMER_TMR_ENABLE;
+#endif
+
+#ifdef CONFIG_M5282
+ /* Set up TIMER 4 as poll clock */
+ timerp[MCFTIMER_PCSR] = MCFTIMER_PCSR_OVW;
+ timerp[MCFTIMER_PMR] = lastinc = 0;
+ timerp[MCFTIMER_PCSR] =
+ (5 << 8) | MCFTIMER_PCSR_EN | MCFTIMER_PCSR_OVW;
+#endif
+}
+
+
+void irq_install_handler (int vec, interrupt_handler_t * handler, void *arg)
+{
+}
+void irq_free_handler (int vec)
+{
+}
+
+int interrupt_init (void)
+{
+ coldfire_timer_init ();
+ return 0;
+}
+
+void enable_interrupts ()
+{
+}
+int disable_interrupts ()
+{
+ return 0;
+}
+
+void set_timer (ulong t)
+{
+ volatile unsigned short *timerp;
+
+ timerp = (volatile unsigned short *) (MCF_MBAR + MCFTIMER_BASE4);
+ timestamp = 0;
+
+#ifdef CONFIG_M5272
+ timerp[MCFTIMER_TRR] = lastinc = 0;
+#endif
+
+#ifdef CONFIG_M5282
+ timerp[MCFTIMER_PMR] = lastinc = 0;
+#endif
+}
+
+ulong get_timer (ulong base)
+{
+ unsigned short now, diff;
+ volatile unsigned short *timerp;
+
+ timerp = (volatile unsigned short *) (MCF_MBAR + MCFTIMER_BASE4);
+
+#ifdef CONFIG_M5272
+ now = timerp[MCFTIMER_TCN];
+ diff = (now - lastinc);
+#endif
+
+#ifdef CONFIG_M5282
+ now = timerp[MCFTIMER_PCNTR];
+ diff = -(now - lastinc);
+#endif
+
+ timestamp += diff;
+ lastinc = now;
+ return timestamp - base;
+}
+
+void wait_ticks (unsigned long ticks)
+{
+ set_timer (0);
+ while (get_timer (0) < ticks);
+}
diff --git a/cpu/coldfire/serial.c b/cpu/coldfire/serial.c
new file mode 100644
index 0000000..a140fe3
--- /dev/null
+++ b/cpu/coldfire/serial.c
@@ -0,0 +1,168 @@
+/*
+ * (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 <commproc.h>
+#include <command.h>
+
+#ifdef CONFIG_M5272
+#include <asm/m5272.h>
+#endif
+#ifdef CONFIG_M5282
+#include <asm/m5282.h>
+#endif
+#include <asm/mcfuart.h>
+
+#define DoubleClock(a) ((double)(MCF_CLK) / 32.0 / (double)(a))
+
+void rs_serial_setbaudrate (int port, int baudrate)
+{
+#ifdef CONFIG_M5272
+ volatile unsigned char *uartp;
+ double clock, fraction;
+
+ if (port == 0)
+ uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1);
+ else
+ uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE2);
+
+ clock = DoubleClock (baudrate); /* Set baud above */
+
+ fraction = ((clock - (int) clock) * 16.0) + 0.5;
+
+ uartp[MCFUART_UBG1] = (((int) clock >> 8) & 0xff); /* set msb baud */
+ uartp[MCFUART_UBG2] = ((int) clock & 0xff); /* set lsb baud */
+ uartp[MCFUART_UFPD] = ((int) fraction & 0xf); /* set baud fraction adjust */
+#endif
+}
+
+void rs_serial_init (int port, int baudrate)
+{
+ volatile unsigned char *uartp;
+ double clock, fraction;
+
+ /*
+ * Reset UART, get it into known state...
+ */
+ if (port == 0)
+ uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1);
+ else
+ uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE2);
+
+ uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETRX; /* reset RX */
+ uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETTX; /* reset TX */
+ uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETMRPTR; /* reset MR pointer */
+ uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETERR; /* reset Error pointer */
+
+ /*
+ * Set port for CONSOLE_BAUD_RATE, 8 data bits, 1 stop bit, no parity.
+ */
+ uartp[MCFUART_UMR] = MCFUART_MR1_PARITYNONE | MCFUART_MR1_CS8;
+ uartp[MCFUART_UMR] = MCFUART_MR2_STOP1;
+
+ rs_serial_setbaudrate (port, baudrate);
+
+ uartp[MCFUART_UCSR] =
+ MCFUART_UCSR_RXCLKTIMER | MCFUART_UCSR_TXCLKTIMER;
+ uartp[MCFUART_UCR] = MCFUART_UCR_RXENABLE | MCFUART_UCR_TXENABLE;
+
+ return;
+}
+
+
+/****************************************************************************/
+
+/*
+ * Output a single character, using UART polled mode.
+ * This is used for console output.
+ */
+
+void rs_put_char (char ch)
+{
+ volatile unsigned char *uartp;
+ int i;
+
+ uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1);
+
+ for (i = 0; (i < 0x10000); i++) {
+ if (uartp[MCFUART_USR] & MCFUART_USR_TXREADY)
+ break;
+ }
+ uartp[MCFUART_UTB] = ch;
+ return;
+}
+
+int rs_is_char (void)
+{
+ volatile unsigned char *uartp;
+
+ uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1);
+ return ((uartp[MCFUART_USR] & MCFUART_USR_RXREADY) ? 1 : 0);
+}
+
+int rs_get_char (void)
+{
+ volatile unsigned char *uartp;
+
+ uartp = (volatile unsigned char *) (MCF_MBAR + MCFUART_BASE1);
+ return (uartp[MCFUART_URB]);
+}
+
+void serial_setbrg (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ rs_serial_setbaudrate (0, gd->bd->bi_baudrate);
+}
+
+int serial_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ rs_serial_init (0, gd->bd->bi_baudrate);
+ return 0;
+}
+
+
+void serial_putc (const char c)
+{
+ if (c == '\n')
+ serial_putc ('\r');
+ rs_put_char (c);
+}
+
+void serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
+
+int serial_getc (void)
+{
+ while (!rs_is_char ());
+ return rs_get_char ();
+}
+
+int serial_tstc ()
+{
+ return rs_is_char ();
+}
diff --git a/cpu/coldfire/speed.c b/cpu/coldfire/speed.c
new file mode 100644
index 0000000..0fe0925
--- /dev/null
+++ b/cpu/coldfire/speed.c
@@ -0,0 +1,35 @@
+/*
+ * (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 <asm/processor.h>
+
+ulong get_gclk_freq (void)
+{
+ return 0;
+}
+
+ulong get_bus_freq (ulong gclk_freq)
+{
+ return 0;
+}
diff --git a/cpu/coldfire/start.S b/cpu/coldfire/start.S
new file mode 100644
index 0000000..7e02661
--- /dev/null
+++ b/cpu/coldfire/start.S
@@ -0,0 +1,165 @@
+/*
+ * 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>
+ * Coldfire contribution by Bernhard Kuhn <bkuhn@metrowerks.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 <config.h>
+#include "version.h"
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+#define MCF_MBAR 0x10000000
+#define MEM_BUILTIN_ADDR 0x20000000
+#define MEM_BUILTIN_SIZE 0x1000
+#define DRAM_ADDR 0x0
+#define DRAM_SIZE 0x400000
+
+ .text
+
+ .globl _start
+_start:
+ nop
+ nop
+ move.w #0x2700,%sr
+
+ move.l #0, %d0
+ movec %d0, %VBR
+
+#ifdef CONFIG_M5272
+ move.l #(MCF_MBAR+1), %d0
+ move.c %d0, %MBAR
+
+ move.l #(MEM_BUILTIN_ADDR+1), %d0
+ movec %d0, %RAMBAR0
+
+ move.l #0x01000000, %d0 /* Invalidate cache cmd */
+ movec %d0, %CACR /* Invalidate cache */
+ move.l #0x0000c000, %d0 /* Setup cache mask */
+ movec %d0, %ACR0 /* Enable cache */
+ move.l #0xff00c000, %d0 /* Setup cache mask */
+ movec %d0, %ACR1 /* Enable cache */
+ move.l #0x80000100, %d0 /* Setup cache mask */
+ movec %d0, %CACR /* Enable cache */
+#endif
+
+ move.l #_sbss,%a0
+ move.l #_ebss,%d0
+1:
+ clr.l (%a0)+
+ cmp.l %a0,%d0
+ bne.s 1b
+
+/* move.l #MEM_BUILTIN_ADDR+MEM_BUILTIN_SIZE, %sp */
+ move.l #DRAM_ADDR+DRAM_SIZE, %sp
+ clr.l %sp@-
+
+ jsr board_init_f
+
+ .globl exception_handler
+exception_handler:
+ move.w #0x2700,%sr
+ lea %sp@(-60),%sp
+ movem.l %d0-%d7/%a0-%a6,%sp@
+ jsr do_exception
+ movem.l %sp@,%d0-%d7/%a0-%a6
+ lea %sp@(60),%sp
+ rte
+
+ .globl buserror_handler
+buserror_handler:
+ move.w #0x2700,%sr
+ lea %sp@(-60),%sp
+ movem.l %d0-%d7/%a0-%a6,%sp@
+ jsr do_buserror
+ movem.l %sp@,%d0-%d7/%a0-%a6
+ lea %sp@(60),%sp
+ rte
+
+ .globl addresserror_handler
+addresserror_handler:
+ move.w #0x2700,%sr
+ lea %sp@(-60),%sp
+ movem.l %d0-%d7/%a0-%a6,%sp@
+ jsr do_buserror
+ movem.l %sp@,%d0-%d7/%a0-%a6
+ lea %sp@(60),%sp
+ rte
+
+ .globl get_endaddr
+get_endaddr:
+ movel #_end,%d0
+ rts
+
+#ifdef CONFIG_M5272
+ .globl icache_enable
+icache_enable:
+ move.l #0x01000000, %d0 /* Invalidate cache cmd */
+ movec %d0, %CACR /* Invalidate cache */
+ move.l #0x0000c000, %d0 /* Setup cache mask */
+ movec %d0, %ACR0 /* Enable cache */
+ move.l #0xff00c000, %d0 /* Setup cache mask */
+ movec %d0, %ACR1 /* Enable cache */
+ move.l #0x80000100, %d0 /* Setup cache mask */
+ movec %d0, %CACR /* Enable cache */
+ moveq #1, %d0
+ move.l %d0, icache_state
+ rts
+
+ .globl icache_disable
+icache_disable:
+ move.l #0x00000100, %d0 /* Setup cache mask */
+ movec %d0, %CACR /* Enable cache */
+ clr.l %d0 /* Setup cache mask */
+ movec %d0, %ACR0 /* Enable cache */
+ movec %d0, %ACR1 /* Enable cache */
+ moveq #0, %d0
+ move.l %d0, icache_state
+ rts
+#endif
+
+#ifdef CONFIG_M5282
+ .globl icache_enable
+icache_enable:
+ rts
+
+ .globl icache_disable
+icache_disable:
+ rts
+#endif
+
+ .globl icache_status
+icache_status:
+ move.l icache_state, %d0
+ rts
+
+ .data
+icache_state:
+ .long 1
+
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", __DATE__, " - ", __TIME__, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"
generated by cgit v1.1 at 2024-12-01 00:43:55 +0000