From aaf373c2531426344015ff3ed971b2c9cb3cec6e Mon Sep 17 00:00:00 2001
From: Wentao Qin <qinwentao@huaqin.corp-partner.google.com>
Date: Mon, 10 Feb 2025 19:36:48 +0800
Subject: [PATCH] mb/google/skywalker: Implement sku_id()

Retrieve the SKU ID for Skywalker via CBI interface.

BUG=b:395551181
BRANCH=none
TEST=check boot log

Signed-off-by: Wentao Qin <qinwentao@huaqin.corp-partner.google.com>
Change-Id: I6f1343f127537f97bfa4e1f2cfef7db5d46fab67
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87359
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/mainboard/google/skywalker/Kconfig     |  2 ++
 src/mainboard/google/skywalker/Makefile.mk |  1 +
 src/mainboard/google/skywalker/boardid.c   | 23 ++++++++++++++++++++++
 3 files changed, 26 insertions(+)
 create mode 100644 src/mainboard/google/skywalker/boardid.c

diff --git a/src/mainboard/google/skywalker/Kconfig b/src/mainboard/google/skywalker/Kconfig
index ddc20e20f3..a05f4bbdd6 100644
--- a/src/mainboard/google/skywalker/Kconfig
+++ b/src/mainboard/google/skywalker/Kconfig
@@ -26,6 +26,8 @@ config BOARD_SPECIFIC_OPTIONS
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_BOARDID
 	select EC_GOOGLE_CHROMEEC_SPI
+	select FW_CONFIG
+	select FW_CONFIG_SOURCE_CHROMEEC_CBI
 
 config MAINBOARD_DIR
 	string
diff --git a/src/mainboard/google/skywalker/Makefile.mk b/src/mainboard/google/skywalker/Makefile.mk
index c2ff8f6cb7..6c863fe287 100644
--- a/src/mainboard/google/skywalker/Makefile.mk
+++ b/src/mainboard/google/skywalker/Makefile.mk
@@ -8,4 +8,5 @@ bootblock-y += bootblock.c
 
 romstage-y += romstage.c
 
+ramstage-y += boardid.c
 ramstage-y += mainboard.c
diff --git a/src/mainboard/google/skywalker/boardid.c b/src/mainboard/google/skywalker/boardid.c
new file mode 100644
index 0000000000..cfac4d5d4d
--- /dev/null
+++ b/src/mainboard/google/skywalker/boardid.c
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <boardid.h>
+#include <console/console.h>
+#include <ec/google/chromeec/ec.h>
+
+uint32_t sku_id(void)
+{
+	static uint32_t cached_sku_code = BOARD_ID_INIT;
+
+	if (cached_sku_code == BOARD_ID_INIT) {
+		cached_sku_code = google_chromeec_get_board_sku();
+
+		if (cached_sku_code == CROS_SKU_UNKNOWN ||
+		    cached_sku_code == CROS_SKU_UNPROVISIONED) {
+			printk(BIOS_WARNING, "Failed to get SKU code from EC\n");
+			cached_sku_code = CROS_SKU_UNPROVISIONED;
+		}
+		printk(BIOS_DEBUG, "SKU Code: %#02x\n", cached_sku_code);
+	}
+
+	return cached_sku_code;
+}