Change in coreboot[master]: mb/google/corsola: get SKU ID from EC (CBI)

[Rex-BC Chen (Code Review)]

Rex-BC Chen has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/59944 )

Change subject: mb/google/corsola: get SKU ID from EC (CBI)
......................................................................

mb/google/corsola: get SKU ID from EC (CBI)

The SKU ID for Corsola is retrieved via CBI interface.

Signed-off-by: Rex-BC Chen 
Change-Id: I2888190d498df28b5ae13cf92cc41d088e8f8ee7
---
M src/mainboard/google/corsola/Kconfig
M src/mainboard/google/corsola/boardid.c
2 files changed, 25 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/44/59944/1

diff --git a/src/mainboard/google/corsola/Kconfig b/src/mainboard/google/corsola/Kconfig
index 8877f2f..193cafd 100644
--- a/src/mainboard/google/corsola/Kconfig
+++ b/src/mainboard/google/corsola/Kconfig
@@ -23,6 +23,7 @@
    select COMMONLIB_STORAGE_MMC
    select EC_GOOGLE_CHROMEEC
    select EC_GOOGLE_CHROMEEC_BOARDID
+	select EC_GOOGLE_CHROMEEC_SKUID
    select EC_GOOGLE_CHROMEEC_SPI
    select MAINBOARD_HAS_SPI_TPM_CR50 if VBOOT
    select MAINBOARD_HAS_TPM2 if VBOOT
diff --git a/src/mainboard/google/corsola/boardid.c b/src/mainboard/google/corsola/boardid.c
index 285b065..96031ef 100644
--- a/src/mainboard/google/corsola/boardid.c
+++ b/src/mainboard/google/corsola/boardid.c
@@ -3,6 +3,7 @@
 #include <assert.h>
 #include <boardid.h>
 #include <console/console.h>
+#include <ec/google/chromeec/ec.h>
 #include <soc/auxadc.h>

/* board_id is provided by ec/google/chromeec/ec_boardid.c */
@@ -13,6 +14,9 @@
    /* RAM IDs */
    RAM_ID_LOW_CHANNEL = 2,
    RAM_ID_HIGH_CHANNEL = 3,
+	/* SKU IDs */
+	SKU_ID_LOW_CHANNEL = 4,
+	SKU_ID_HIGH_CHANNEL = 5,
 };

static const unsigned int ram_voltages[ADC_LEVELS] = {
@@ -34,6 +38,8 @@
 static const unsigned int *adc_voltages[] = {
    [RAM_ID_LOW_CHANNEL] = ram_voltages,
    [RAM_ID_HIGH_CHANNEL] = ram_voltages,
+	[SKU_ID_LOW_CHANNEL] = ram_voltages,
+	[SKU_ID_HIGH_CHANNEL] = ram_voltages,
 };

static uint32_t get_adc_index(unsigned int channel)
@@ -54,6 +60,24 @@
    return id;
 }

+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) {
+			printk(BIOS_WARNING, "Failed to get SKU code from EC\n");
+			cached_sku_code = (get_adc_index(SKU_ID_HIGH_CHANNEL) << 4 |
+					   get_adc_index(SKU_ID_LOW_CHANNEL));
+		}
+		printk(BIOS_DEBUG, "SKU Code: %#02x\n", cached_sku_code);
+	}
+
+	return cached_sku_code;
+}
+
 uint32_t ram_code(void)
 {
    static uint32_t cached_ram_code = BOARD_ID_INIT;