diff options
| author | Prafulla Wadaskar | 2010-09-30 19:33:19 +0530 |
|---|---|---|
| committer | Wolfgang Denk | 2010-10-13 09:36:07 +0200 |
| commit | beeb2589761d218076b2b5ed5699a08216ca8cf9 (patch) | |
| tree | 06e12d51a9f3a919f029f1d1ee88f6c320c2a173 /arch/arm | |
| parent | 500f2ff52a812d6ffd50b81978375116815f7f5b (diff) | |
Kirkwood: dram_init is moved to dram.c
For all Kirkwood boards so far dram_init function is duplicated
dram_init function is moved to dram.c and relevant code from all
board specific files removed
If any board needs specific dram init handling than standard one,
then, a macro CONFIG_SYS_BOARD_DRAM_INIT should be defined in
board config header file and the dram_init function can be put
in board specific source file
For ex. keymile boards
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/kirkwood/dram.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/kirkwood/dram.c b/arch/arm/cpu/arm926ejs/kirkwood/dram.c index 8f2a18af6b3..7439c87f681 100644 --- a/arch/arm/cpu/arm926ejs/kirkwood/dram.c +++ b/arch/arm/cpu/arm926ejs/kirkwood/dram.c @@ -23,8 +23,11 @@ */ #include <config.h> +#include <common.h> #include <asm/arch/kirkwood.h> +DECLARE_GLOBAL_DATA_PTR; + #define KW_REG_CPUCS_WIN_BAR(x) (KW_REGISTER(0x1500) + (x * 0x08)) #define KW_REG_CPUCS_WIN_SZ(x) (KW_REGISTER(0x1504) + (x * 0x08)) /* @@ -56,3 +59,38 @@ u32 kw_sdram_bs(enum memory_bank bank) result += 0x01000000; return result; } + +#ifndef CONFIG_SYS_BOARD_DRAM_INIT +int dram_init(void) +{ + int i; + + gd->ram_size = 0; + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + gd->bd->bi_dram[i].start = kw_sdram_bar(i); + gd->bd->bi_dram[i].size = kw_sdram_bs(i); + /* + * It is assumed that all memory banks are consecutive + * and without gaps. + * If the gap is found, ram_size will be reported for + * consecutive memory only + */ + if (gd->bd->bi_dram[i].start != gd->ram_size) + break; + + gd->ram_size += gd->bd->bi_dram[i].size; + + } + return 0; +} + +/* + * If this function is not defined here, + * board.c alters dram bank zero configuration defined above. + */ +void dram_init_banksize(void) +{ + dram_init(); +} +#endif /* CONFIG_SYS_BOARD_DRAM_INIT */ + |