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-rw-r--r--board/siemens/CCM/ccm.c440
-rw-r--r--board/siemens/CCM/fpga_ccm.c170
2 files changed, 610 insertions, 0 deletions
diff --git a/board/siemens/CCM/ccm.c b/board/siemens/CCM/ccm.c
new file mode 100644
index 0000000..079f38f
--- /dev/null
+++ b/board/siemens/CCM/ccm.c
@@ -0,0 +1,440 @@
+/*
+ * (C) Copyright 2001
+ * 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 <mpc8xx.h>
+#include <commproc.h>
+#include <command.h>
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+void can_driver_enable (void);
+void can_driver_disable (void);
+
+int fpga_init(void);
+
+/* ------------------------------------------------------------------------- */
+
+#define _NOT_USED_ 0xFFFFFFFF
+
+const uint sdram_table[] =
+{
+ /*
+ * Single Read. (Offset 0 in UPMA RAM)
+ */
+ 0x1F0DFC04, 0xEEAFBC04, 0x11AF7C04, 0xEFBAFC00,
+ 0x1FF5FC47, /* last */
+ /*
+ * SDRAM Initialization (offset 5 in UPMA RAM)
+ *
+ * This is no UPM entry point. The following definition uses
+ * the remaining space to establish an initialization
+ * sequence, which is executed by a RUN command.
+ *
+ */
+ 0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */
+ /*
+ * Burst Read. (Offset 8 in UPMA RAM)
+ */
+ 0x1F0DFC04, 0xEEAFBC04, 0x10AF7C04, 0xF0AFFC00,
+ 0xF0AFFC00, 0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Single Write. (Offset 18 in UPMA RAM)
+ */
+ 0x1F0DFC04, 0xEEABBC00, 0x01B27C04, 0x1FF5FC47, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Burst Write. (Offset 20 in UPMA RAM)
+ */
+ 0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00,
+ 0xF0AFFC00, 0xE1BAFC04, 0x1FF5FC47, /* last */
+ _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Refresh (Offset 30 in UPMA RAM)
+ */
+ 0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+ 0xFFFFFC84, 0xFFFFFC07, /* last */
+ _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Exception. (Offset 3c in UPMA RAM)
+ */
+ 0x7FFFFC07, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ *
+ * Always return 1 (no second DRAM bank since based on TQM8xxL module)
+ */
+
+int checkboard (void)
+{
+ unsigned char *s;
+ unsigned char buf[64];
+
+ s = (getenv_r ("serial#", buf, sizeof(buf)) > 0) ? buf : NULL;
+
+ puts ("Board: Siemens CCM");
+
+ if (s) {
+ puts (" (");
+
+ for (; *s; ++s) {
+ if (*s == ' ')
+ break;
+ putc (*s);
+ }
+ putc (')');
+ }
+
+ putc ('\n');
+
+ return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * If Power-On-Reset switch off the Red and Green LED: At reset, the
+ * data direction registers are cleared and must therefore be restored.
+ */
+#define RSR_CSRS 0x08000000
+
+int power_on_reset(void)
+{
+ /* Test Reset Status Register */
+ return ((volatile immap_t *)CFG_IMMR)->im_clkrst.car_rsr & RSR_CSRS ? 0:1;
+}
+
+#define PB_LED_GREEN 0x10000 /* red LED is on PB.15 */
+#define PB_LED_RED 0x20000 /* red LED is on PB.14 */
+#define PB_LEDS (PB_LED_GREEN | PB_LED_RED);
+
+static void init_leds (void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+
+ immap->im_cpm.cp_pbpar &= ~PB_LEDS;
+ immap->im_cpm.cp_pbodr &= ~PB_LEDS;
+ immap->im_cpm.cp_pbdir |= PB_LEDS;
+ /* Check stop reset status */
+ if (power_on_reset()) {
+ immap->im_cpm.cp_pbdat &= ~PB_LEDS;
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ long int size8, size9;
+ long int size = 0;
+ unsigned long reg;
+
+ upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+
+ /*
+ * Preliminary prescaler for refresh (depends on number of
+ * banks): This value is selected for four cycles every 62.4 us
+ * with two SDRAM banks or four cycles every 31.2 us with one
+ * bank. It will be adjusted after memory sizing.
+ */
+ memctl->memc_mptpr = CFG_MPTPR_2BK_8K;
+
+ memctl->memc_mar = 0x00000088;
+
+ /*
+ * Map controller banks 2 and 3 to the SDRAM banks 2 and 3 at
+ * preliminary addresses - these have to be modified after the
+ * SDRAM size has been determined.
+ */
+ memctl->memc_or2 = CFG_OR2_PRELIM;
+ memctl->memc_br2 = CFG_BR2_PRELIM;
+
+ memctl->memc_mamr = CFG_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */
+
+ udelay(200);
+
+ /* perform SDRAM initializsation sequence */
+
+ memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */
+ udelay(1);
+ memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */
+ udelay(1);
+
+ memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
+
+ udelay (1000);
+
+ /*
+ * Check Bank 0 Memory Size for re-configuration
+ *
+ * try 8 column mode
+ */
+ size8 = dram_size (CFG_MAMR_8COL, (ulong *)SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
+
+ udelay (1000);
+
+ /*
+ * try 9 column mode
+ */
+ size9 = dram_size (CFG_MAMR_9COL, (ulong *)SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
+
+ if (size8 < size9) { /* leave configuration at 9 columns */
+ size = size9;
+/* debug ("SDRAM in 9 column mode: %ld MB\n", size >> 20); */
+ } else { /* back to 8 columns */
+ size = size8;
+ memctl->memc_mamr = CFG_MAMR_8COL;
+ udelay(500);
+/* debug ("SDRAM in 8 column mode: %ld MB\n", size >> 20); */
+ }
+
+ udelay (1000);
+
+ /*
+ * Adjust refresh rate depending on SDRAM type
+ * For types > 128 MBit leave it at the current (fast) rate
+ */
+ if (size < 0x02000000) {
+ /* reduce to 15.6 us (62.4 us / quad) */
+ memctl->memc_mptpr = CFG_MPTPR_2BK_4K;
+ udelay(1000);
+ }
+
+ /*
+ * Final mapping
+ */
+
+ memctl->memc_or2 = ((-size) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
+ memctl->memc_br2 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
+
+
+ /* adjust refresh rate depending on SDRAM type, one bank */
+ reg = memctl->memc_mptpr;
+ reg >>= 1; /* reduce to CFG_MPTPR_1BK_8K / _4K */
+ memctl->memc_mptpr = reg;
+
+ can_driver_enable ();
+ init_leds ();
+
+ udelay(10000);
+
+ return (size);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Warning - both the PUMA load mode and the CAN driver use UPM B,
+ * so make sure only one of both is active.
+ */
+void can_driver_enable (void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+ /* Initialize MBMR */
+ memctl->memc_mbmr = MAMR_GPL_B4DIS; /* GPL_B4 ouput line Disable */
+
+ /* Initialize UPMB for CAN: single read */
+ memctl->memc_mdr = 0xFFFFC004;
+ memctl->memc_mcr = 0x0100 | UPMB;
+
+ memctl->memc_mdr = 0x0FFFD004;
+ memctl->memc_mcr = 0x0101 | UPMB;
+
+ memctl->memc_mdr = 0x0FFFC000;
+ memctl->memc_mcr = 0x0102 | UPMB;
+
+ memctl->memc_mdr = 0x3FFFC004;
+ memctl->memc_mcr = 0x0103 | UPMB;
+
+ memctl->memc_mdr = 0xFFFFDC05;
+ memctl->memc_mcr = 0x0104 | UPMB;
+
+ /* Initialize UPMB for CAN: single write */
+ memctl->memc_mdr = 0xFFFCC004;
+ memctl->memc_mcr = 0x0118 | UPMB;
+
+ memctl->memc_mdr = 0xCFFCD004;
+ memctl->memc_mcr = 0x0119 | UPMB;
+
+ memctl->memc_mdr = 0x0FFCC000;
+ memctl->memc_mcr = 0x011A | UPMB;
+
+ memctl->memc_mdr = 0x7FFCC004;
+ memctl->memc_mcr = 0x011B | UPMB;
+
+ memctl->memc_mdr = 0xFFFDCC05;
+ memctl->memc_mcr = 0x011C | UPMB;
+
+ /* Initialize OR3 / BR3 for CAN Bus Controller */
+ memctl->memc_or3 = CFG_OR3_CAN;
+ memctl->memc_br3 = CFG_BR3_CAN;
+}
+
+void can_driver_disable (void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+ /* Reset OR3 / BR3 to disable CAN Bus Controller */
+ memctl->memc_br3 = 0;
+ memctl->memc_or3 = 0;
+
+ memctl->memc_mbmr = 0;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Check memory range for valid RAM. A simple memory test determines
+ * the actually available RAM size between addresses `base' and
+ * `base + maxsize'. Some (not all) hardware errors are detected:
+ * - short between address lines
+ * - short between data lines
+ */
+
+static long int dram_size (long int mamr_value, long int *base, long int maxsize)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ volatile long int *addr;
+ ulong cnt, val;
+ ulong save[32]; /* to make test non-destructive */
+ unsigned char i = 0;
+
+ memctl->memc_mamr = mamr_value;
+
+ for (cnt = maxsize/sizeof(long); cnt > 0; cnt >>= 1) {
+ addr = base + cnt; /* pointer arith! */
+
+ save[i++] = *addr;
+ *addr = ~cnt;
+ }
+
+ /* write 0 to base address */
+ addr = base;
+ save[i] = *addr;
+ *addr = 0;
+
+ /* check at base address */
+ if ((val = *addr) != 0) {
+ *addr = save[i];
+ return (0);
+ }
+
+ for (cnt = 1; cnt <= maxsize/sizeof(long); cnt <<= 1) {
+ addr = base + cnt; /* pointer arith! */
+
+ val = *addr;
+ *addr = save[--i];
+
+ if (val != (~cnt)) {
+ return (cnt * sizeof(long));
+ }
+ }
+ return (maxsize);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#define ETH_CFG_BITS (CFG_PB_ETH_CFG1 | CFG_PB_ETH_CFG2 | CFG_PB_ETH_CFG3 )
+
+#define ETH_ALL_BITS (ETH_CFG_BITS | CFG_PB_ETH_POWERDOWN)
+
+void reset_phy(void)
+{
+ immap_t *immr = (immap_t *)CFG_IMMR;
+ ulong value;
+
+ /* Configure all needed port pins for GPIO */
+#if CFG_ETH_MDDIS_VALUE
+ immr->im_ioport.iop_padat |= CFG_PA_ETH_MDDIS;
+#else
+ immr->im_ioport.iop_padat &= ~(CFG_PA_ETH_MDDIS | CFG_PA_ETH_RESET); /* Set low */
+#endif
+ immr->im_ioport.iop_papar &= ~(CFG_PA_ETH_MDDIS | CFG_PA_ETH_RESET); /* GPIO */
+ immr->im_ioport.iop_paodr &= ~(CFG_PA_ETH_MDDIS | CFG_PA_ETH_RESET); /* active output */
+ immr->im_ioport.iop_padir |= CFG_PA_ETH_MDDIS | CFG_PA_ETH_RESET; /* output */
+
+ immr->im_cpm.cp_pbpar &= ~(ETH_ALL_BITS); /* GPIO */
+ immr->im_cpm.cp_pbodr &= ~(ETH_ALL_BITS); /* active output */
+
+ value = immr->im_cpm.cp_pbdat;
+
+ /* Assert Powerdown and Reset signals */
+ value |= CFG_PB_ETH_POWERDOWN;
+
+ /* PHY configuration includes MDDIS and CFG1 ... CFG3 */
+#if CFG_ETH_CFG1_VALUE
+ value |= CFG_PB_ETH_CFG1;
+#else
+ value &= ~(CFG_PB_ETH_CFG1);
+#endif
+#if CFG_ETH_CFG2_VALUE
+ value |= CFG_PB_ETH_CFG2;
+#else
+ value &= ~(CFG_PB_ETH_CFG2);
+#endif
+#if CFG_ETH_CFG3_VALUE
+ value |= CFG_PB_ETH_CFG3;
+#else
+ value &= ~(CFG_PB_ETH_CFG3);
+#endif
+
+ /* Drive output signals to initial state */
+ immr->im_cpm.cp_pbdat = value;
+ immr->im_cpm.cp_pbdir |= ETH_ALL_BITS;
+ udelay (10000);
+
+ /* De-assert Ethernet Powerdown */
+ immr->im_cpm.cp_pbdat &= ~(CFG_PB_ETH_POWERDOWN); /* Enable PHY power */
+ udelay (10000);
+
+ /* de-assert RESET signal of PHY */
+ immr->im_ioport.iop_padat |= CFG_PA_ETH_RESET;
+ udelay (1000);
+}
+
+
+int misc_init_r (void)
+{
+ fpga_init();
+ return (0);
+}
+/* ------------------------------------------------------------------------- */
diff --git a/board/siemens/CCM/fpga_ccm.c b/board/siemens/CCM/fpga_ccm.c
new file mode 100644
index 0000000..292387b
--- /dev/null
+++ b/board/siemens/CCM/fpga_ccm.c
@@ -0,0 +1,170 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Grandegger, DENX Software Engineering, wg@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 <mpc8xx.h>
+#include <commproc.h>
+#include <common.h>
+
+#include "../common/fpga.h"
+
+fpga_t fpga_list[] = {
+ { "PUMA" , PUMA_CONF_BASE ,
+ CFG_PC_PUMA_INIT , CFG_PC_PUMA_PROG , CFG_PC_PUMA_DONE }
+};
+int fpga_count = sizeof(fpga_list) / sizeof(fpga_t);
+
+void can_driver_enable (void);
+void can_driver_disable (void);
+
+#define _NOT_USED_ 0xFFFFFFFF
+
+/*
+ * PUMA access using UPM B
+ */
+const uint puma_table[] =
+{
+ /*
+ * Single Read. (Offset 0 in UPM RAM)
+ */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_,
+ /*
+ * Precharge and MRS
+ */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Burst Read. (Offset 8 in UPM RAM)
+ */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Single Write. (Offset 18 in UPM RAM)
+ */
+ 0x0FFCF804, 0x0FFCF400, 0x3FFDFC47, /* last */
+ _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Burst Write. (Offset 20 in UPM RAM)
+ */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Refresh (Offset 30 in UPM RAM)
+ */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Exception. (Offset 3c in UPM RAM)
+ */
+ 0x7FFFFC07, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+
+ulong fpga_control (fpga_t* fpga, int cmd)
+{
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immr->im_memctl;
+
+ switch (cmd) {
+ case FPGA_INIT_IS_HIGH:
+ immr->im_ioport.iop_pcdir &= ~fpga->init_mask; /* input */
+ return (immr->im_ioport.iop_pcdat & fpga->init_mask) ? 1:0;
+
+ case FPGA_INIT_SET_LOW:
+ immr->im_ioport.iop_pcdir |= fpga->init_mask; /* output */
+ immr->im_ioport.iop_pcdat &= ~fpga->init_mask;
+ break;
+
+ case FPGA_INIT_SET_HIGH:
+ immr->im_ioport.iop_pcdir |= fpga->init_mask; /* output */
+ immr->im_ioport.iop_pcdat |= fpga->init_mask;
+ break;
+
+ case FPGA_PROG_SET_LOW:
+ immr->im_ioport.iop_pcdat &= ~fpga->prog_mask;
+ break;
+
+ case FPGA_PROG_SET_HIGH:
+ immr->im_ioport.iop_pcdat |= fpga->prog_mask;
+ break;
+
+ case FPGA_DONE_IS_HIGH:
+ return (immr->im_ioport.iop_pcdat & fpga->done_mask) ? 1:0;
+
+ case FPGA_READ_MODE:
+ /* disable FPGA in memory controller */
+ memctl->memc_br4 = 0;
+ memctl->memc_or4 = PUMA_CONF_OR_READ;
+ memctl->memc_br4 = PUMA_CONF_BR_READ;
+
+ /* (re-) enable CAN drivers */
+ can_driver_enable ();
+
+ break;
+
+ case FPGA_LOAD_MODE:
+ /* disable FPGA in memory controller */
+ memctl->memc_br4 = 0;
+ /*
+ * We must disable the CAN drivers first because
+ * they use UPM B, too.
+ */
+ can_driver_disable ();
+ /*
+ * Configure UPMB for FPGA
+ */
+ upmconfig(UPMB,(uint *)puma_table,sizeof(puma_table)/sizeof(uint));
+ memctl->memc_or4 = PUMA_CONF_OR_LOAD;
+ memctl->memc_br4 = PUMA_CONF_BR_LOAD;
+ break;
+
+ case FPGA_GET_ID:
+ return *(volatile ulong *)fpga->conf_base;
+
+ case FPGA_INIT_PORTS:
+ immr->im_ioport.iop_pcpar &= ~fpga->init_mask; /* INIT I/O */
+ immr->im_ioport.iop_pcso &= ~fpga->init_mask;
+ immr->im_ioport.iop_pcdir &= ~fpga->init_mask;
+
+ immr->im_ioport.iop_pcpar &= ~fpga->prog_mask; /* PROG Output */
+ immr->im_ioport.iop_pcso &= ~fpga->prog_mask;
+ immr->im_ioport.iop_pcdir |= fpga->prog_mask;
+
+ immr->im_ioport.iop_pcpar &= ~fpga->done_mask; /* DONE Input */
+ immr->im_ioport.iop_pcso &= ~fpga->done_mask;
+ immr->im_ioport.iop_pcdir &= ~fpga->done_mask;
+
+ break;
+
+ }
+ return 0;
+}
+
generated by cgit v1.1 at 2024-11-17 07:10:56 +0000