From b3edaa7b10af69f9e3cbcf7c86b450ba2ed4e698 Mon Sep 17 00:00:00 2001
From: Jarried Lin <jarried.lin@mediatek.corp-partner.google.com>
Date: Mon, 23 Dec 2024 17:17:17 +0800
Subject: [PATCH] mb/google/rauru: Implement SKU ID

Retrieve the SKU ID for Rauru via CBI interface. If that failed
(or no data found), fall back to ADC channels for SKU ID.

TEST=Build pass, boot ok, log show:
SKU Code: 0x2
BUG=b:317009620

Change-Id: I49ba6f428f55d3aae1b84a4d5ce06bec765caece
Signed-off-by: Jarried Lin <jarried.lin@mediatek.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85666
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yidi Lin <yidilin@google.com>
---
 src/mainboard/google/rauru/Kconfig   |  1 +
 src/mainboard/google/rauru/boardid.c | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/src/mainboard/google/rauru/Kconfig b/src/mainboard/google/rauru/Kconfig
index 18a1699e87..57e8c1b5cf 100644
--- a/src/mainboard/google/rauru/Kconfig
+++ b/src/mainboard/google/rauru/Kconfig
@@ -26,6 +26,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select CHROMEOS_USE_EC_WATCHDOG_FLAG if CHROMEOS
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_BOARDID
+	select EC_GOOGLE_CHROMEEC_SKUID
 	select EC_GOOGLE_CHROMEEC_SPI
 	select I2C_TPM if VBOOT
 	select MAINBOARD_HAS_TPM2 if VBOOT
diff --git a/src/mainboard/google/rauru/boardid.c b/src/mainboard/google/rauru/boardid.c
index 1d49e03b6a..e3e0979012 100644
--- a/src/mainboard/google/rauru/boardid.c
+++ b/src/mainboard/google/rauru/boardid.c
@@ -3,6 +3,7 @@
 #include <assert.h>
 #include <boardid.h>
 #include <console/console.h>
+#include <device/mmio.h>
 #include <ec/google/chromeec/ec.h>
 #include <soc/mt6363_sdmadc.h>
 
@@ -10,6 +11,10 @@
 
 #define ADC_LEVELS 8
 
+DEFINE_BITFIELD(STORAGE_TYPE, 11, 9);
+DEFINE_BITFIELD(CPU_TYPE, 8, 8);
+DEFINE_BITFIELD(PANEL_TYPE, 7, 0);
+
 enum {
 	/* Storage IDs */
 	STORAGE_ID_LOW_CHANNEL = AUXADC_CHAN_VIN1,
@@ -75,3 +80,22 @@ enum ufs_type storage_type(uint32_t index)
 	}
 	return UFS_UNKNOWN;
 }
+
+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;
+			SET32_BITFIELDS(&cached_sku_code, STORAGE_TYPE, storage_id());
+		}
+		printk(BIOS_DEBUG, "SKU Code: %#02x\n", cached_sku_code);
+	}
+
+	return cached_sku_code;
+}