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-rw-r--r--board/mpc8540eval/mpc8540eval.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/board/mpc8540eval/mpc8540eval.c b/board/mpc8540eval/mpc8540eval.c
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+++ b/board/mpc8540eval/mpc8540eval.c
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+/*
+ * (C) Copyright 2002,2003, Motorola Inc.
+ * Xianghua Xiao, (X.Xiao@motorola.com)
+ *
+ * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.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
+ */
+
+
+extern long int spd_sdram (void);
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/immap_85xx.h>
+#include <spd.h>
+
+
+
+long int fixed_sdram (void);
+
+/* MPC8540ADS Board Status & Control Registers */
+#if 0
+typedef struct bscr_ {
+ unsigned long bcsr0;
+ unsigned long bcsr1;
+ unsigned long bcsr2;
+ unsigned long bcsr3;
+ unsigned long bcsr4;
+ unsigned long bcsr5;
+ unsigned long bcsr6;
+ unsigned long bcsr7;
+} bcsr_t;
+#endif
+
+
+
+int board_pre_init (void)
+{
+#if defined(CONFIG_PCI)
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ volatile ccsr_pcix_t *pci = &immr->im_pcix;
+
+ pci->peer &= 0xffffffdf; /* disable master abort */
+#endif
+ return 0;
+}
+
+int checkboard (void)
+{
+ sys_info_t sysinfo;
+
+ get_sys_info (&sysinfo);
+
+ printf ("Board: Freescale MPC8540EVAL Board\n");
+ printf ("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
+ printf ("\tCCB: %lu MHz\n", sysinfo.freqSystemBus / 1000000);
+ printf ("\tDDR: %lu MHz\n", sysinfo.freqSystemBus / 2000000);
+ if((CFG_LBC_LCRR & 0x0f) == 2 || (CFG_LBC_LCRR & 0x0f) == 4 \
+ || (CFG_LBC_LCRR & 0x0f) == 8) {
+ printf ("\tLBC: %lu MHz\n", sysinfo.freqSystemBus / 1000000 /(CFG_LBC_LCRR & 0x0f));
+ } else {
+ printf("\tLBC: unknown\n");
+ }
+ printf("L1 D-cache 32KB, L1 I-cache 32KB enabled.\n");
+ return (0);
+}
+
+long int initdram (int board_type)
+{
+ long dram_size = 0;
+ extern long spd_sdram (void);
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+#if !defined(CONFIG_RAM_AS_FLASH)
+ volatile ccsr_lbc_t *lbc= &immap->im_lbc;
+ sys_info_t sysinfo;
+ uint temp_lbcdll = 0;
+#endif
+#if !defined(CONFIG_RAM_AS_FLASH) || defined(CONFIG_DDR_DLL)
+ volatile ccsr_gur_t *gur= &immap->im_gur;
+#endif
+
+#if defined(CONFIG_DDR_DLL)
+ uint temp_ddrdll = 0;
+
+ /* Work around to stabilize DDR DLL */
+ temp_ddrdll = gur->ddrdllcr;
+ gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
+ asm("sync;isync;msync");
+#endif
+
+#if defined(CONFIG_SPD_EEPROM)
+ dram_size = spd_sdram ();
+#else
+ dram_size = fixed_sdram ();
+#endif
+
+#if defined(CFG_RAMBOOT)
+ return dram_size;
+#endif
+
+#if !defined(CONFIG_RAM_AS_FLASH) /* LocalBus is not emulating flash */
+ get_sys_info(&sysinfo);
+ /* if localbus freq is less than 66Mhz,we use bypass mode,otherwise use DLL */
+ if(sysinfo.freqSystemBus/(CFG_LBC_LCRR & 0x0f) < 66000000) {
+ lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff)| 0x80000000;
+ } else {
+ lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
+ udelay(200);
+ temp_lbcdll = gur->lbcdllcr;
+ gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16 ) | 0x80000000;
+ asm("sync;isync;msync");
+ }
+ lbc->or2 = CFG_OR2_PRELIM; /* 64MB SDRAM */
+ lbc->br2 = CFG_BR2_PRELIM;
+ lbc->lbcr = CFG_LBC_LBCR;
+ lbc->lsdmr = CFG_LBC_LSDMR_1;
+ asm("sync");
+ * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_2;
+ asm("sync");
+ * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_3;
+ asm("sync");
+ * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_4;
+ asm("sync");
+ * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_5;
+ asm("sync");
+ lbc->lsrt = CFG_LBC_LSRT;
+ asm("sync");
+ lbc->mrtpr = CFG_LBC_MRTPR;
+ asm("sync");
+#endif
+
+#if defined(CONFIG_DDR_ECC)
+ {
+ /* Initialize all of memory for ECC, then
+ * enable errors */
+ uint *p = 0;
+ uint i = 0;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_ddr_t *ddr= &immap->im_ddr;
+ dma_init();
+ for (*p = 0; p < (uint *)(8 * 1024); p++) {
+ if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
+ *p = (unsigned int)0xdeadbeef;
+ if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
+ }
+
+ /* 8K */
+ dma_xfer((uint *)0x2000,0x2000,(uint *)0);
+ /* 16K */
+ dma_xfer((uint *)0x4000,0x4000,(uint *)0);
+ /* 32K */
+ dma_xfer((uint *)0x8000,0x8000,(uint *)0);
+ /* 64K */
+ dma_xfer((uint *)0x10000,0x10000,(uint *)0);
+ /* 128k */
+ dma_xfer((uint *)0x20000,0x20000,(uint *)0);
+ /* 256k */
+ dma_xfer((uint *)0x40000,0x40000,(uint *)0);
+ /* 512k */
+ dma_xfer((uint *)0x80000,0x80000,(uint *)0);
+ /* 1M */
+ dma_xfer((uint *)0x100000,0x100000,(uint *)0);
+ /* 2M */
+ dma_xfer((uint *)0x200000,0x200000,(uint *)0);
+ /* 4M */
+ dma_xfer((uint *)0x400000,0x400000,(uint *)0);
+
+ for (i = 1; i < dram_size / 0x800000; i++) {
+ dma_xfer((uint *)(0x800000*i),0x800000,(uint *)0);
+ }
+
+ /* Enable errors for ECC */
+ ddr->err_disable = 0x00000000;
+ asm("sync;isync;msync");
+ }
+#endif
+
+ return dram_size;
+}
+
+
+#if defined(CFG_DRAM_TEST)
+int testdram (void)
+{
+ uint *pstart = (uint *) CFG_MEMTEST_START;
+ uint *pend = (uint *) CFG_MEMTEST_END;
+ uint *p;
+
+ printf("SDRAM test phase 1:\n");
+ for (p = pstart; p < pend; p++)
+ *p = 0xaaaaaaaa;
+
+ for (p = pstart; p < pend; p++) {
+ if (*p != 0xaaaaaaaa) {
+ printf ("SDRAM test fails at: %08x\n", (uint) p);
+ return 1;
+ }
+ }
+
+ printf("SDRAM test phase 2:\n");
+ for (p = pstart; p < pend; p++)
+ *p = 0x55555555;
+
+ for (p = pstart; p < pend; p++) {
+ if (*p != 0x55555555) {
+ printf ("SDRAM test fails at: %08x\n", (uint) p);
+ return 1;
+ }
+ }
+
+ printf("SDRAM test passed.\n");
+ return 0;
+}
+#endif
+
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*************************************************************************
+ * fixed sdram init -- doesn't use serial presence detect.
+ ************************************************************************/
+long int fixed_sdram (void)
+{
+ #ifndef CFG_RAMBOOT
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_ddr_t *ddr= &immap->im_ddr;
+
+ ddr->cs0_bnds = CFG_DDR_CS0_BNDS;
+ ddr->cs0_config = CFG_DDR_CS0_CONFIG;
+ ddr->timing_cfg_1 = CFG_DDR_TIMING_1;
+ ddr->timing_cfg_2 = CFG_DDR_TIMING_2;
+ ddr->sdram_mode = CFG_DDR_MODE;
+ ddr->sdram_interval = CFG_DDR_INTERVAL;
+ #if defined (CONFIG_DDR_ECC)
+ ddr->err_disable = 0x0000000D;
+ ddr->err_sbe = 0x00ff0000;
+ #endif
+ asm("sync;isync;msync");
+ udelay(500);
+ #if defined (CONFIG_DDR_ECC)
+ /* Enable ECC checking */
+ ddr->sdram_cfg = (CFG_DDR_CONTROL | 0x20000000);
+ #else
+ ddr->sdram_cfg = CFG_DDR_CONTROL;
+ #endif
+ asm("sync; isync; msync");
+ udelay(500);
+ #endif
+ return (CFG_SDRAM_SIZE * 1024 * 1024);
+}
+#endif /* !defined(CONFIG_SPD_EEPROM) */
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