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authorWolfgang Grandegger <wg@grandegger.com>2008-06-04 13:52:17 +0200
committerAndrew Fleming-AFLEMING <afleming@freescale.com>2008-06-10 18:22:26 -0500
commit4677988c7edc070c3786d3db7994abeca3ab82a0 (patch)
treeafe5291cc036cf5718f23734d1133cc71e26e5e0 /board/tqm85xx/sdram.c
parent6fab2fe72ca5bf95280cd52cdf378af3e506eb50 (diff)
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TQM: move TQM boards to board/tqc
Move all TQM board directories to the vendor specific directory "tqc" for modules from TQ-Components GmbH (http://www.tqc.de). Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Diffstat (limited to 'board/tqm85xx/sdram.c')
-rw-r--r--board/tqm85xx/sdram.c223
1 files changed, 0 insertions, 223 deletions
diff --git a/board/tqm85xx/sdram.c b/board/tqm85xx/sdram.c
deleted file mode 100644
index 788a48c..0000000
--- a/board/tqm85xx/sdram.c
+++ /dev/null
@@ -1,223 +0,0 @@
-/*
- * (C) Copyright 2005
- * Stefan Roese, DENX Software Engineering, sr@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>
-#include <asm/immap_85xx.h>
-#include <asm/processor.h>
-#include <asm/mmu.h>
-
-struct sdram_conf_s {
- unsigned long size;
- unsigned long reg;
-};
-
-typedef struct sdram_conf_s sdram_conf_t;
-
-sdram_conf_t ddr_cs_conf[] = {
- {(512 << 20), 0x80000202}, /* 512MB, 14x10(4) */
- {(256 << 20), 0x80000102}, /* 256MB, 13x10(4) */
- {(128 << 20), 0x80000101}, /* 128MB, 13x9(4) */
- {(64 << 20), 0x80000001}, /* 64MB, 12x9(4) */
-};
-
-#define N_DDR_CS_CONF (sizeof(ddr_cs_conf) / sizeof(ddr_cs_conf[0]))
-
-int cas_latency(void);
-
-/*
- * Autodetect onboard DDR SDRAM on 85xx platforms
- *
- * NOTE: Some of the hardcoded values are hardware dependant,
- * so this should be extended for other future boards
- * using this routine!
- */
-long int sdram_setup(int casl)
-{
- int i;
- volatile ccsr_ddr_t *ddr = (void *)(CFG_MPC85xx_DDR_ADDR);
- unsigned long cfg_ddr_timing1;
- unsigned long cfg_ddr_mode;
-
- /*
- * Disable memory controller.
- */
- ddr->cs0_config = 0;
- ddr->sdram_cfg = 0;
-
- switch (casl) {
- case 20:
- cfg_ddr_timing1 = 0x47405331 | (3 << 16);
- cfg_ddr_mode = 0x40020002 | (2 << 4);
- break;
-
- case 25:
- cfg_ddr_timing1 = 0x47405331 | (4 << 16);
- cfg_ddr_mode = 0x40020002 | (6 << 4);
- break;
-
- case 30:
- default:
- cfg_ddr_timing1 = 0x47405331 | (5 << 16);
- cfg_ddr_mode = 0x40020002 | (3 << 4);
- break;
- }
-
- ddr->cs0_bnds = (ddr_cs_conf[0].size - 1) >> 24;
- ddr->cs0_config = ddr_cs_conf[0].reg;
- ddr->timing_cfg_1 = cfg_ddr_timing1;
- ddr->timing_cfg_2 = 0x00000800; /* P9-45,may need tuning */
- ddr->sdram_mode = cfg_ddr_mode;
- ddr->sdram_interval = 0x05160100; /* autocharge,no open page */
- ddr->err_disable = 0x0000000D;
-
- asm ("sync;isync;msync");
- udelay(1000);
-
- ddr->sdram_cfg = 0xc2000000; /* unbuffered,no DYN_PWR */
- asm ("sync; isync; msync");
- udelay(1000);
-
- for (i=0; i<N_DDR_CS_CONF; i++) {
- ddr->cs0_config = ddr_cs_conf[i].reg;
-
- if (get_ram_size(0, ddr_cs_conf[i].size) == ddr_cs_conf[i].size) {
- /*
- * OK, size detected -> all done
- */
- return ddr_cs_conf[i].size;
- }
- }
-
- return 0; /* nothing found ! */
-}
-
-void board_add_ram_info(int use_default)
-{
- int casl;
-
- if (use_default)
- casl = CONFIG_DDR_DEFAULT_CL;
- else
- casl = cas_latency();
-
- puts(" (CL=");
- switch (casl) {
- case 20:
- puts("2)");
- break;
-
- case 25:
- puts("2.5)");
- break;
-
- case 30:
- puts("3)");
- break;
- }
-}
-
-long int initdram (int board_type)
-{
- long dram_size = 0;
- int casl;
-
-#if defined(CONFIG_DDR_DLL)
- /*
- * This DLL-Override only used on TQM8540 and TQM8560
- */
- {
- volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
- int i,x;
-
- x = 10;
-
- /*
- * Work around to stabilize DDR DLL
- */
- gur->ddrdllcr = 0x81000000;
- asm("sync;isync;msync");
- udelay (200);
- while (gur->ddrdllcr != 0x81000100) {
- gur->devdisr = gur->devdisr | 0x00010000;
- asm("sync;isync;msync");
- for (i=0; i<x; i++)
- ;
- gur->devdisr = gur->devdisr & 0xfff7ffff;
- asm("sync;isync;msync");
- x++;
- }
- }
-#endif
-
- casl = cas_latency();
- dram_size = sdram_setup(casl);
- if ((dram_size == 0) && (casl != CONFIG_DDR_DEFAULT_CL)) {
- /*
- * Try again with default CAS latency
- */
- puts("Problem with CAS lantency");
- board_add_ram_info(1);
- puts(", using default CL!\n");
- casl = CONFIG_DDR_DEFAULT_CL;
- dram_size = sdram_setup(casl);
- puts(" ");
- }
-
- 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