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Diffstat (limited to 'board/sbc8349/sbc8349.c')
-rw-r--r--board/sbc8349/sbc8349.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/board/sbc8349/sbc8349.c b/board/sbc8349/sbc8349.c
index 50fae7c..42f4c1e 100644
--- a/board/sbc8349/sbc8349.c
+++ b/board/sbc8349/sbc8349.c
@@ -89,26 +89,25 @@ phys_size_t initdram (int board_type)
int fixed_sdram(void)
{
volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
- u32 msize = 0;
- u32 ddr_size;
- u32 ddr_size_log2;
-
- msize = CONFIG_SYS_DDR_SIZE;
- for (ddr_size = msize << 20, ddr_size_log2 = 0;
- (ddr_size > 1);
- ddr_size = ddr_size>>1, ddr_size_log2++) {
- if (ddr_size & 1) {
- return -1;
- }
- }
+ u32 msize = CONFIG_SYS_DDR_SIZE;
+ u32 ddr_size = msize << 20; /* DDR size in bytes */
+ u32 ddr_size_log2 = __ilog2(msize);
+
im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000;
im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
#if (CONFIG_SYS_DDR_SIZE != 256)
#warning Currently any ddr size other than 256 is not supported
#endif
- im->ddr.csbnds[2].csbnds = 0x0000000f;
- im->ddr.cs_config[2] = CONFIG_SYS_DDR_CONFIG;
+
+#if ((CONFIG_SYS_DDR_SDRAM_BASE & 0x00FFFFFF) != 0)
+#warning Chip select bounds is only configurable in 16MB increments
+#endif
+ im->ddr.csbnds[2].csbnds =
+ ((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
+ (((CONFIG_SYS_DDR_SDRAM_BASE + ddr_size - 1) >>
+ CSBNDS_EA_SHIFT) & CSBNDS_EA);
+ im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;
/* currently we use only one CS, so disable the other banks */
im->ddr.cs_config[0] = 0;