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muas3001: added 64MB SDRAM autodetection. 

Signed-off-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Heiko Schocher 2008-09-08 10:19:36 +02:00 committed by Wolfgang Denk
parent 52bacb9879
commit a55d074dac
2 changed files with 23 additions and 7 deletions
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14
board/muas3001/muas3001.c
View File

@ -253,8 +253,10 @@ phys_size_t initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8260_t *memctl = &immap->im_memctl;
long psize;
#ifndef CFG_RAMBOOT
long sizelittle, sizebig;
#endif
memctl->memc_psrt = CFG_PSRT;
memctl->memc_mptpr = CFG_MPTPR;
@ -262,8 +264,16 @@ phys_size_t initdram (int board_type)
#ifndef CFG_RAMBOOT
/* 60x SDRAM setup:
*/
psize = try_init (memctl, CFG_PSDMR, CFG_OR1,
sizelittle = try_init (memctl, CFG_PSDMR_LITTLE, CFG_OR1_LITTLE,
(uchar *) CFG_SDRAM_BASE);
sizebig = try_init (memctl, CFG_PSDMR_BIG, CFG_OR1_BIG,
(uchar *) CFG_SDRAM_BASE);
if (sizelittle < sizebig) {
psize = sizebig;
} else {
psize = try_init (memctl, CFG_PSDMR_LITTLE, CFG_OR1_LITTLE,
(uchar *) CFG_SDRAM_BASE);
}
#endif /* CFG_RAMBOOT */
icache_enable ();

16
include/configs/muas3001.h
View File

@ -331,8 +331,7 @@
/* Bank 1 - 60x bus SDRAM
*/
#define SDRAM_MAX_SIZE 0x08000000 /* max. 128 MB */
#define CFG_GLOBAL_SDRAM_LIMIT (128 << 20) /* less than 128 MB */
#define CFG_GLOBAL_SDRAM_LIMIT (256 << 20) /* less than 256 MB */
#define CFG_MPTPR 0x2800
@ -348,16 +347,23 @@
BRx_MS_SDRAM_P |\
BRx_V)
#define CFG_OR1_PRELIM CFG_OR1
#define CFG_OR1_PRELIM CFG_OR1_LITTLE
/* SDRAM initialization values
*/
#define CFG_OR1 ((~(CFG_GLOBAL_SDRAM_LIMIT-1) & ORxS_SDAM_MSK) |\
#define CFG_OR1_LITTLE ((~(CFG_GLOBAL_SDRAM_LIMIT-1) & ORxS_SDAM_MSK) |\
ORxS_BPD_4 |\
ORxS_ROWST_PBI1_A7 |\
ORxS_NUMR_12)
#define CFG_PSDMR 0x004b36a3
#define CFG_PSDMR_LITTLE 0x004b36a3
#define CFG_OR1_BIG ((~(CFG_GLOBAL_SDRAM_LIMIT-1) & ORxS_SDAM_MSK) |\
ORxS_BPD_4 |\
ORxS_ROWST_PBI1_A4 |\
ORxS_NUMR_12)
#define CFG_PSDMR_BIG 0x014f36a3
/* IO on CS4 initialization values
*/