diff options
Diffstat (limited to 'board/solidrun/mx6cuboxi/mx6cuboxi.c')
| -rw-r--r-- | board/solidrun/mx6cuboxi/mx6cuboxi.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c index 1567cf0c91..38d89f0130 100644 --- a/board/solidrun/mx6cuboxi/mx6cuboxi.c +++ b/board/solidrun/mx6cuboxi/mx6cuboxi.c @@ -64,9 +64,51 @@ enum board_type { UNKNOWN = 0x03, }; +#define MEM_STRIDE 0x4000000 +static u32 get_ram_size_stride_test(u32 *base, u32 maxsize) +{ + volatile u32 *addr; + u32 save[64]; + u32 cnt; + u32 size; + int i = 0; + + /* First save the data */ + for (cnt = 0; cnt < maxsize; cnt += MEM_STRIDE) { + addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */ + sync (); + save[i++] = *addr; + sync (); + } + + /* First write a signature */ + * (volatile u32 *)base = 0x12345678; + for (size = MEM_STRIDE; size < maxsize; size += MEM_STRIDE) { + * (volatile u32 *)((u32)base + size) = size; + sync (); + if (* (volatile u32 *)((u32)base) == size) { /* We reached the overlapping address */ + break; + } + } + + /* Restore the data */ + for (cnt = (maxsize - MEM_STRIDE); i > 0; cnt -= MEM_STRIDE) { + addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */ + sync (); + *addr = save[i--]; + sync (); + } + + return (size); +} + int dram_init(void) { - gd->ram_size = imx_ddr_size(); + u32 max_size = imx_ddr_size(); + + gd->ram_size = get_ram_size_stride_test((u32 *) CONFIG_SYS_SDRAM_BASE, + (u32)max_size); + return 0; } @@ -626,7 +668,7 @@ static struct mx6_ddr3_cfg mem_ddr_4g = { .density = 4, .width = 16, .banks = 8, - .rowaddr = 15, + .rowaddr = 16, .coladdr = 10, .pagesz = 2, .trcd = 1375, |