diff options
| author | Xi Chen <xixi.chen@mediatek.corp-partner.google.com> | 2022-02-17 16:48:52 +0800 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2022-03-23 11:54:28 +0000 |
| commit | ad63eabe3a35b32cbea47a20bd2f36510fb7a506 (patch) | |
| tree | 811b1320ac9d0fd74a3c129bcd6ab573ad8bc99c /src | |
| parent | 555c2aeb674567e641930dba014c3219c92f6e9e (diff) | |
src/mediatek/mt8186: Implement sdram_size() to get real dram size
Originally, dram size is hard-coded to 4GB by default. To support
different dram size, calculate it from the mem chip info stored
in CBMEM.
BUG=b:206014043
TEST=Output "dram size: 0x100000000" on Kingler
Signed-off-by: Xi Chen <xixi.chen@mediatek.corp-partner.google.com>
Change-Id: I017e9d1a2d6e26f1fc21b67b5962dfb5c6ade8a5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62065
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/mediatek/mt8186/emi.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/soc/mediatek/mt8186/emi.c b/src/soc/mediatek/mt8186/emi.c index 48a7b3ef07..6e2544185e 100644 --- a/src/soc/mediatek/mt8186/emi.c +++ b/src/soc/mediatek/mt8186/emi.c @@ -5,11 +5,30 @@ * Chapter number: 4.8 */ +#include <assert.h> +#include <cbmem.h> +#include <commonlib/bsd/mem_chip_info.h> #include <soc/emi.h> size_t sdram_size(void) { - return (size_t)4 * GiB; + const struct mem_chip_info *mc; + size_t size = 0; + + if (ENV_ROMSTAGE) { + size = mtk_dram_size(); + printk(BIOS_INFO, "dram size (romstage): %#lx\n", size); + return size; + } + + mc = cbmem_find(CBMEM_ID_MEM_CHIP_INFO); + assert(mc); + + for (unsigned int i = 0; i < mc->num_channels; ++i) + size += mc->channel[i].density; + + printk(BIOS_INFO, "dram size: %#lx\n", size); + return size; } void mt_set_emi(struct dramc_param *dparam) |