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path: root/board/esd/cpci750/sdram_init.c
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Diffstat (limited to 'board/esd/cpci750/sdram_init.c')
-rw-r--r--board/esd/cpci750/sdram_init.c41
1 files changed, 31 insertions, 10 deletions
diff --git a/board/esd/cpci750/sdram_init.c b/board/esd/cpci750/sdram_init.c
index 6bdfc1d..c094755 100644
--- a/board/esd/cpci750/sdram_init.c
+++ b/board/esd/cpci750/sdram_init.c
@@ -1504,6 +1504,8 @@ int setup_sdram (AUX_MEM_DIMM_INFO * info)
/* for (i = info->slot * 2; i < ((info->slot * 2) + info->banks); i++) */
{
+ int l, l1;
+
i = info->slot;
DP (printf
("\n*** Running a MRS cycle for bank %d ***\n", i));
@@ -1511,20 +1513,39 @@ int setup_sdram (AUX_MEM_DIMM_INFO * info)
/* map the bank */
memory_map_bank (i, 0, GB / 4);
#if 1 /* test only */
- /* set SDRAM mode */ /* To_do check it */
+
+ tmp = GTREGREAD (SDRAM_MODE);
+ GT_REG_WRITE (EXTENDED_DRAM_MODE, 0x0);
+ GT_REG_WRITE (SDRAM_OPERATION, 0x4);
+ while (GTREGREAD (SDRAM_OPERATION) != 0) {
+ DP (printf
+ ("\n*** SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... ***\n"));
+ }
+
+ GT_REG_WRITE (SDRAM_MODE, tmp | 0x80);
GT_REG_WRITE (SDRAM_OPERATION, 0x3);
- check = GTREGREAD (SDRAM_OPERATION);
- DP (printf
- ("\n*** SDRAM_OPERATION 1418 (0 = Normal Operation) = %08lx ***\n",
- check));
+ while (GTREGREAD (SDRAM_OPERATION) != 0) {
+ DP (printf
+ ("\n*** SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... ***\n"));
+ }
+ l1 = 0;
+ for (l=0;l<200;l++)
+ l1 += GTREGREAD (SDRAM_OPERATION);
+ GT_REG_WRITE (SDRAM_MODE, tmp);
+ GT_REG_WRITE (SDRAM_OPERATION, 0x3);
+ while (GTREGREAD (SDRAM_OPERATION) != 0) {
+ DP (printf
+ ("\n*** SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... ***\n"));
+ }
/* switch back to normal operation mode */
- GT_REG_WRITE (SDRAM_OPERATION, 0);
- check = GTREGREAD (SDRAM_OPERATION);
- DP (printf
- ("\n*** SDRAM_OPERATION 1418 (0 = Normal Operation) = %08lx ***\n",
- check));
+ GT_REG_WRITE (SDRAM_OPERATION, 0x5);
+ while (GTREGREAD (SDRAM_OPERATION) != 0) {
+ DP (printf
+ ("\n*** SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... ***\n"));
+ }
+
#endif /* test only */
/* unmap the bank */
memory_map_bank (i, 0, 0);