diff options
| -rw-r--r-- | arch/arm/mach-owl/soc.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/arm/mach-owl/soc.c b/arch/arm/mach-owl/soc.c index 7d3f6f62855..fd6ee7c1c0f 100644 --- a/arch/arm/mach-owl/soc.c +++ b/arch/arm/mach-owl/soc.c @@ -15,14 +15,34 @@ #include <asm/mach-types.h> #include <asm/psci.h> +#define DMM_INTERLEAVE_PER_CH_CFG 0xe0290028 + DECLARE_GLOBAL_DATA_PTR; +unsigned int owl_get_ddrcap(void) +{ + unsigned int val, cap; + + /* ddr capacity register initialized by ddr driver + * in early bootloader + */ +#if defined(CONFIG_MACH_S700) + val = (readl(DMM_INTERLEAVE_PER_CH_CFG) >> 8) & 0x7; + cap = (val + 1) * 256; +#elif defined(CONFIG_MACH_S900) + val = (readl(DMM_INTERLEAVE_PER_CH_CFG) >> 8) & 0xf; + cap = 64 * (1 << val); +#endif + + return cap; +} + /* * dram_init - sets uboots idea of sdram size */ int dram_init(void) { - gd->ram_size = CONFIG_SYS_SDRAM_SIZE; + gd->ram_size = owl_get_ddrcap() * 1024 * 1024; return 0; } |