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

The SKU ID for Cherry is retrieved via CBI interface.

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Icefa016c2e5f68bd194f76d2252856835c65b8e8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55383
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
This commit is contained in:
Rex-BC Chen 2021-05-31 19:48:13 +08:00 committed by Hung-Te Lin
parent d593bf7dfe
commit 262bcc04d4
2 changed files with 29 additions and 2 deletions
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1
src/mainboard/google/cherry/Kconfig
View File

@ -21,6 +21,7 @@ config BOARD_SPECIFIC_OPTIONS
select SPI_FLASH_INCLUDE_ALL_DRIVERS
select EC_GOOGLE_CHROMEEC
select EC_GOOGLE_CHROMEEC_BOARDID
select EC_GOOGLE_CHROMEEC_SKUID
select EC_GOOGLE_CHROMEEC_SPI
select MAINBOARD_HAS_I2C_TPM_CR50 if VBOOT
select MAINBOARD_HAS_TPM2 if VBOOT

30
src/mainboard/google/cherry/boardid.c
View File

@ -3,14 +3,20 @@
#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 */
#define ADC_LEVELS 12
enum {
/* RAM IDs */
RAM_ID_HIGH_CHANNEL = 3,
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] = {
@ -30,8 +36,10 @@ static const unsigned int ram_voltages[ADC_LEVELS] = {
};
static const unsigned int *adc_voltages[] = {
[RAM_ID_HIGH_CHANNEL] = ram_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)
@ -52,6 +60,24 @@ static uint32_t get_adc_index(unsigned int channel)
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;