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authorwdenk <wdenk>2004-01-06 22:38:14 +0000
committerwdenk <wdenk>2004-01-06 22:38:14 +0000
commitc83bf6a2d00ef846c1fb2b0c60540f03ef203125 (patch)
treee410334c86d491dbbec765a5765eef9cccd3135a /board/incaip
parentb299e41a0d34bf96202d9bbb72739bdd9414b0cc (diff)
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Add a common get_ram_size() function and modify the the
board-specific files to invoke that common implementation.
Diffstat (limited to 'board/incaip')
-rw-r--r--board/incaip/incaip.c48
1 files changed, 1 insertions, 47 deletions
diff --git a/board/incaip/incaip.c b/board/incaip/incaip.c
index 10171dd..eb6eaea 100644
--- a/board/incaip/incaip.c
+++ b/board/incaip/incaip.c
@@ -47,52 +47,6 @@ static ulong max_sdram_size(void)
return size;
}
-/*
- * Check memory range for valid RAM. A simple memory test determines
- * the actually available RAM size between addresses `base' and
- * `base + maxsize'. Some (not all) hardware errors are detected:
- * - short between address lines
- * - short between data lines
- */
-
-static long int dram_size(long int *base, long int maxsize)
-{
- volatile long int *addr;
- ulong cnt, val;
- ulong save[32]; /* to make test non-destructive */
- unsigned char i = 0;
-
- for (cnt = (maxsize / sizeof (long)) >> 1; cnt > 0; cnt >>= 1) {
- addr = base + cnt; /* pointer arith! */
-
- save[i++] = *addr;
- *addr = ~cnt;
- }
-
- /* write 0 to base address */
- addr = base;
- save[i] = *addr;
- *addr = 0;
-
- /* check at base address */
- if ((val = *addr) != 0) {
- *addr = save[i];
- return (0);
- }
-
- for (cnt = 1; cnt < maxsize / sizeof (long); cnt <<= 1) {
- addr = base + cnt; /* pointer arith! */
-
- val = *addr;
- *addr = save[--i];
-
- if (val != (~cnt)) {
- return (cnt * sizeof (long));
- }
- }
- return (maxsize);
-}
-
long int initdram(int board_type)
{
int rows, cols, best_val = *INCA_IP_SDRAM_MC_CFGPB0;
@@ -114,7 +68,7 @@ long int initdram(int board_type)
{
*INCA_IP_SDRAM_MC_CFGPB0 = (0x14 << 8) |
(rows << 4) | cols;
- size = dram_size((ulong *)CFG_SDRAM_BASE,
+ size = get_ram_size((ulong *)CFG_SDRAM_BASE,
max_sdram_size());
if (size > max_size)