From fd27996dacd308849e30f67da49ba068a7f68aaa Mon Sep 17 00:00:00 2001
From: Wolfgang Denk <wd@pollux.denx.de>
Date: Sat, 22 Jul 2006 21:45:49 +0200
Subject: [PATCH] Add support for 256 MB SDRAM on CPU87 Patch by Josef Wagner,
25 Nov 2005
---
CHANGELOG | 3 +++
board/cpu87/cpu87.c | 24 ++++++++++++++++--------
include/configs/CPU87.h | 24 +++++++++++++++++++++---
3 files changed, 40 insertions(+), 11 deletions(-)
diff --git a/CHANGELOG b/CHANGELOG
index ee832bc8661..c4568a862b8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,9 @@
Changes since U-Boot 1.1.4:
======================================================================
+* Add support for 256 MB SDRAM on CPU87
+ Patch by Josef Wagner, 25 Nov 2005
+
* Add configuration for cam5200 board (based on TQM5200S).
* More code cleanup
diff --git a/board/cpu87/cpu87.c b/board/cpu87/cpu87.c
index 8363d868fc2..e8c2614eb47 100644
--- a/board/cpu87/cpu87.c
+++ b/board/cpu87/cpu87.c
@@ -197,7 +197,7 @@ const iop_conf_t iop_conf_tab[4][32] = {
*/
int checkboard (void)
{
- printf ("Board: CPU87 (Rev %02x)\n", CPU86_REV);
+ printf ("Board: CPU87 (Rev %02x)\n", CPU86_REV & 0x7f);
return 0;
}
@@ -280,7 +280,7 @@ long int initdram (int board_type)
volatile memctl8260_t *memctl = &immap->im_memctl;
#ifndef CFG_RAMBOOT
- ulong size8, size9;
+ ulong size8, size9, size10;
#endif
long psize;
@@ -294,17 +294,25 @@ long int initdram (int board_type)
*/
size8 = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
(uchar *) CFG_SDRAM_BASE);
+
size9 = try_init (memctl, CFG_PSDMR_9COL, CFG_OR2_9COL,
(uchar *) CFG_SDRAM_BASE);
-
- if (size8 < size9) {
- psize = size9;
- printf ("(60x:9COL) ");
- } else {
+
+ size10 = try_init (memctl, CFG_PSDMR_10COL, CFG_OR2_10COL,
+ (uchar *) CFG_SDRAM_BASE);
+
+ psize = max(size8,max(size9,size10));
+
+ if (psize == size8) {
psize = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
(uchar *) CFG_SDRAM_BASE);
printf ("(60x:8COL) ");
- }
+ } else if (psize == size9){
+ psize = try_init (memctl, CFG_PSDMR_9COL, CFG_OR2_9COL,
+ (uchar *) CFG_SDRAM_BASE);
+ printf ("(60x:9COL) ");
+ } else
+ printf ("(60x:10COL) ");
#endif /* CFG_RAMBOOT */
diff --git a/include/configs/CPU87.h b/include/configs/CPU87.h
index 9a98e5c191e..7a1dada2db5 100644
--- a/include/configs/CPU87.h
+++ b/include/configs/CPU87.h
@@ -455,7 +455,7 @@
#define CFG_MIN_AM_MASK 0xC0000000
/*
- * we use the same values for 32 MB and 128 MB SDRAM
+ * we use the same values for 32 MB, 128 MB and 256 MB SDRAM
* refresh rate = 7.68 uS (100 MHz Bus Clock)
*/
@@ -510,6 +510,24 @@
PSDMR_WRC_1C |\
PSDMR_CL_2)
+ /* SDRAM initialization values for 10-column chips
+ */
+#define CFG_OR2_10COL (CFG_MIN_AM_MASK |\
+ ORxS_BPD_4 |\
+ ORxS_ROWST_PBI1_A4 |\
+ ORxS_NUMR_13)
+
+#define CFG_PSDMR_10COL (PSDMR_PBI |\
+ PSDMR_SDAM_A17_IS_A5 |\
+ PSDMR_BSMA_A13_A15 |\
+ PSDMR_SDA10_PBI1_A6 |\
+ PSDMR_RFRC_7_CLK |\
+ PSDMR_PRETOACT_2W |\
+ PSDMR_ACTTORW_2W |\
+ PSDMR_LDOTOPRE_1C |\
+ PSDMR_WRC_1C |\
+ PSDMR_CL_2)
+
/*
* Init Memory Controller:
*
@@ -588,9 +606,9 @@
BRx_MS_SDRAM_P |\
BRx_V)
-#define CFG_OR2_PRELIM CFG_OR2_9COL
+#define CFG_OR2_PRELIM CFG_OR2_8COL
-#define CFG_PSDMR CFG_PSDMR_9COL
+#define CFG_PSDMR CFG_PSDMR_8COL
#endif /* CFG_RAMBOOT */
/* Bank 3 - Dual Ported SRAM
--
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