diff options
Diffstat (limited to 'board/ste/stemmy/stemmy.c')
-rw-r--r-- | board/ste/stemmy/stemmy.c | 62 |
1 files changed, 61 insertions, 1 deletions
diff --git a/board/ste/stemmy/stemmy.c b/board/ste/stemmy/stemmy.c index b9b2a6fddc..9e6c8e208e 100644 --- a/board/ste/stemmy/stemmy.c +++ b/board/ste/stemmy/stemmy.c @@ -4,17 +4,77 @@ */ #include <common.h> #include <init.h> +#include <log.h> #include <asm/global_data.h> +#include <asm/setup.h> +#include <asm/system.h> DECLARE_GLOBAL_DATA_PTR; +/* Parse atags provided by Samsung bootloader to get available memory */ +static ulong fw_mach __section(".data"); +static ulong fw_atags __section(".data"); + +void save_boot_params(ulong r0, ulong r1, ulong r2, ulong r3) +{ + fw_mach = r1; + fw_atags = r2; + save_boot_params_ret(); +} + +static const struct tag *fw_atags_get(void) +{ + const struct tag *tags = (const struct tag *)fw_atags; + + if (tags->hdr.tag != ATAG_CORE) { + log_err("Invalid atags: tag 0x%x at %p\n", tags->hdr.tag, tags); + return NULL; + } + + return tags; +} + int dram_init(void) { - gd->ram_size = get_ram_size(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_SDRAM_SIZE); + const struct tag *t, *tags = fw_atags_get(); + + if (!tags) + return -EINVAL; + + for_each_tag(t, tags) { + if (t->hdr.tag != ATAG_MEM) + continue; + + debug("Memory: %#x-%#x (size %#x)\n", t->u.mem.start, + t->u.mem.start + t->u.mem.size, t->u.mem.size); + gd->ram_size += t->u.mem.size; + } + return 0; +} + +int dram_init_banksize(void) +{ + const struct tag *t, *tags = fw_atags_get(); + unsigned int bank = 0; + + if (!tags) + return -EINVAL; + + for_each_tag(t, tags) { + if (t->hdr.tag != ATAG_MEM) + continue; + + gd->bd->bi_dram[bank].start = t->u.mem.start; + gd->bd->bi_dram[bank].size = t->u.mem.size; + if (++bank == CONFIG_NR_DRAM_BANKS) + break; + } return 0; } int board_init(void) { + gd->bd->bi_arch_number = fw_mach; + gd->bd->bi_boot_params = fw_atags; return 0; } |