[coreboot-gerrit] Change in coreboot[master]: soc/mediatek: Add a configurate "USE_CBMEM_DRAM_INFO"

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/63109 )

Change subject: soc/mediatek: Add a configurate "USE_CBMEM_DRAM_INFO"
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soc/mediatek: Add a configurate "USE_CBMEM_DRAM_INFO"

The memory initialization reference code didn't support returning
DRAM information in the old platforms, for example MT8192 and MT8195.
So we have to add a new configuration USE_CBMEM_DRAM_INFO to make
sure the common code will try to get DRAM information on new
platforms supporting that.

BUG=none
TEST=build pass

Signed-off-by: Rex-BC Chen 
Change-Id: Iebe9ea0c1d01890b09fdf586813d85adde9702e1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63109
Tested-by: build bot (Jenkins) 
Reviewed-by: Yu-Ping Wu 
---
M src/soc/mediatek/common/Kconfig
M src/soc/mediatek/common/memory.c
2 files changed, 12 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Yu-Ping Wu: Looks good to me, approved

diff --git a/src/soc/mediatek/common/Kconfig b/src/soc/mediatek/common/Kconfig
index cd3b2a2..2adb344 100644
--- a/src/soc/mediatek/common/Kconfig
+++ b/src/soc/mediatek/common/Kconfig
@@ -50,4 +50,10 @@
      and dumps to internal RAM on the WDT reset. We reserve 1MB on DRAM
      to store logs of DFD.

+config USE_CBMEM_DRAM_INFO
+	bool "Support filling dram information to cbmem"
+	help
+	  The DRAM initialization will keep and return DRAM information (size,
+	  geometry and other DDR info) so we can fill that into the CBMEM.
+
 endif
diff --git a/src/soc/mediatek/common/memory.c b/src/soc/mediatek/common/memory.c
index 0850d0f..ab1ccb5 100644
--- a/src/soc/mediatek/common/memory.c
+++ b/src/soc/mediatek/common/memory.c
@@ -134,6 +134,12 @@
    struct mem_chip_info *mc;
    size_t size;

+	if (!CONFIG(USE_CBMEM_DRAM_INFO)) {
+		printk(BIOS_DEBUG,
+		       "DRAM-K: CBMEM DRAM info is unsupported (USE_CBMEM_DRAM_INFO)\n");
+		return;
+	}
+
    size = sizeof(*mc) + sizeof(struct mem_chip_channel) * CHANNEL_MAX;
    mc = cbmem_add(CBMEM_ID_MEM_CHIP_INFO, size);
    assert(mc);