[XS] Change in coreboot[main]: mb/google/skywalker: Initialize flash controller in bootblock

[Yidi Lin (Code Review)]

Yidi Lin has submitted this change. ( https://review.coreboot.org/c/coreboot/+/86998?usp=email )

Change subject: mb/google/skywalker: Initialize flash controller in bootblock
......................................................................

mb/google/skywalker: Initialize flash controller in bootblock

Initialize SPI NOR Flash Controller (SNFC) in the bootblock to
enable CBFS and execute other stages such as verstage, romstage,
ramstage, etc.

BUG=b:379008996
BRANCH=none
TEST=Read NOR flash data successfully.

Signed-off-by: Noah Shen 
Change-Id: Icf4af32dd9d8c704fd7246adda94dfa3350bb672
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86998
Tested-by: build bot (Jenkins) 
Reviewed-by: Yidi Lin 
Reviewed-by: Yu-Ping Wu 
---
M src/mainboard/google/skywalker/Kconfig
M src/mainboard/google/skywalker/bootblock.c
2 files changed, 6 insertions(+), 1 deletion(-)

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

diff --git a/src/mainboard/google/skywalker/Kconfig b/src/mainboard/google/skywalker/Kconfig
index a3bed90..b3da548 100644
--- a/src/mainboard/google/skywalker/Kconfig
+++ b/src/mainboard/google/skywalker/Kconfig
@@ -27,4 +27,8 @@
 config MAINBOARD_PART_NUMBER
    string
    default "Skywalker" if BOARD_GOOGLE_SKYWALKER
+
+config BOOT_DEVICE_SPI_FLASH_BUS
+	int
+	default 7
 endif
diff --git a/src/mainboard/google/skywalker/bootblock.c b/src/mainboard/google/skywalker/bootblock.c
index af9934e..1062d9b 100644
--- a/src/mainboard/google/skywalker/bootblock.c
+++ b/src/mainboard/google/skywalker/bootblock.c
@@ -1,8 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */

#include <bootblock_common.h>
+#include <soc/spi.h>

void bootblock_mainboard_init(void)
 {
-	/* TODO: add mainboard init for bootblock */
+	mtk_snfc_init();
 }