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Diffstat (limited to 'cpu/ppc4xx/sdram.c')
-rw-r--r--cpu/ppc4xx/sdram.c33
1 files changed, 25 insertions, 8 deletions
diff --git a/cpu/ppc4xx/sdram.c b/cpu/ppc4xx/sdram.c
index 294b89c..d520cd3 100644
--- a/cpu/ppc4xx/sdram.c
+++ b/cpu/ppc4xx/sdram.c
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2005-2006
+ * (C) Copyright 2005-2007
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* (C) Copyright 2006
@@ -32,9 +32,9 @@
#include <asm/processor.h>
#include "sdram.h"
-
#ifdef CONFIG_SDRAM_BANK0
+#ifndef CONFIG_440
#ifndef CFG_SDRAM_TABLE
sdram_conf_t mb0cf[] = {
@@ -50,9 +50,6 @@ sdram_conf_t mb0cf[] = CFG_SDRAM_TABLE;
#define N_MB0CF (sizeof(mb0cf) / sizeof(mb0cf[0]))
-
-#ifndef CONFIG_440
-
#ifdef CFG_SDRAM_CASL
static ulong ns2clks(ulong ns)
{
@@ -221,6 +218,26 @@ void sdram_init(void)
#else /* CONFIG_440 */
+/*
+ * Define some default values. Those can be overwritten in the
+ * board config file.
+ */
+
+#ifndef CFG_SDRAM_TABLE
+sdram_conf_t mb0cf[] = {
+ {(256 << 20), 13, 0x000C4001}, /* 256MB mode 3, 13x10(4) */
+ {(64 << 20), 12, 0x00082001} /* 64MB mode 2, 12x9(4) */
+};
+#else
+sdram_conf_t mb0cf[] = CFG_SDRAM_TABLE;
+#endif
+
+#ifndef CFG_SDRAM0_TR0
+#define CFG_SDRAM0_TR0 0x41094012
+#endif
+
+#define N_MB0CF (sizeof(mb0cf) / sizeof(mb0cf[0]))
+
#define NUM_TRIES 64
#define NUM_READS 10
@@ -295,7 +312,6 @@ static void sdram_tr1_set(int ram_address, int* tr1_value)
*tr1_value = (first_good + last_bad) / 2;
}
-
#ifdef CONFIG_SDRAM_ECC
static void ecc_init(ulong start, ulong size)
{
@@ -351,7 +367,8 @@ long int initdram(int board_type)
int i;
int tr1_bank1;
-#if defined(CONFIG_440GX) || defined(CONFIG_440EP) || defined(CONFIG_440GR) || defined(CONFIG_440SP)
+#if defined(CONFIG_440GX) || defined(CONFIG_440EP) || \
+ defined(CONFIG_440GR) || defined(CONFIG_440SP)
/*
* Soft-reset SDRAM controller.
*/
@@ -378,7 +395,7 @@ long int initdram(int board_type)
* Following for CAS Latency = 2.5 @ 133 MHz PLB
*/
mtsdram(mem_b0cr, mb0cf[i].reg);
- mtsdram(mem_tr0, 0x41094012);
+ mtsdram(mem_tr0, CFG_SDRAM0_TR0);
mtsdram(mem_tr1, 0x80800800); /* SS=T2 SL=STAGE 3 CD=1 CT=0x00*/
mtsdram(mem_rtr, 0x04100000); /* Interval 7.8µs @ 133MHz PLB */
mtsdram(mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM*/