From 2e3d1db7ecc142452c717985c3d931cf7aaca19c Mon Sep 17 00:00:00 2001 From: Ryan Chuang Date: Fri, 9 Jul 2021 16:26:50 +0800 Subject: [PATCH] soc/mediatek/mt8195: Get DRAM size from DRAM calibration result Signed-off-by: Ryan Chuang Change-Id: Ic34f29d1692b94284b2cf6c5d91d323df736c76f Reviewed-on: https://review.coreboot.org/c/coreboot/+/56204 Reviewed-by: Hung-Te Lin Reviewed-by: Yu-Ping Wu Tested-by: build bot (Jenkins) --- src/soc/mediatek/mt8195/emi.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/src/soc/mediatek/mt8195/emi.c b/src/soc/mediatek/mt8195/emi.c index 120665a29b..6cbcae1bc5 100644 --- a/src/soc/mediatek/mt8195/emi.c +++ b/src/soc/mediatek/mt8195/emi.c @@ -1,8 +1,25 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include +#include #include size_t sdram_size(void) { - return (size_t)4 * GiB; + int rank_num; + u64 rank_size[RANK_MAX]; + static size_t dram_size = 0; + + if (dram_size) + return dram_size; + + get_rank_size_by_emi(rank_size); + rank_num = get_rank_nr_by_emi(); + + for (int i = 0; i < rank_num; i++) + dram_size += rank_size[i]; + + printk(BIOS_INFO, "dram size = %#lx\n", dram_size); + + return dram_size; }