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mb/google/fizz: Get OEM ID and SKU ID from EC

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This patch makes coreboot fetch OEM ID and SKU ID from EC. If it fails,
it falls back to GPIO pins.

BUG=b:70294260
BRANCH=none
TEST=Verify AP log shows expected OEM ID and SKU ID on Fizz.

Change-Id: I06d3a205275b46660b3974bc3673d4be8e13f6d1
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://review.coreboot.org/23548
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Daisuke Nojiri 2018-02-01 07:46:02 -08:00 committed by Martin Roth
parent 07f9748f22
commit 0592776467
1 changed files with 46 additions and 14 deletions
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60
src/mainboard/google/fizz/mainboard.c
View file

@ -86,21 +86,34 @@ static const enum bj_adapter bj_adapter_table[OEM_ID_COUNT][SKU_ID_COUNT] = {
BJ_90W_19V, BJ_90W_19V, BJ_65W_19V },
};
static const char *oem_id = "GOOGLE";
static const char *oem_table_id = "FIZZ";
static uint8_t board_sku_id(void)
static uint8_t read_sku_id_from_gpio(void)
{
static int id = -1;
const gpio_t sku_id_gpios[] = {
GPIO_SKU_ID0,
GPIO_SKU_ID1,
GPIO_SKU_ID2,
GPIO_SKU_ID3,
};
if (id < 0)
id = gpio_base2_value(sku_id_gpios, ARRAY_SIZE(sku_id_gpios));
return id;
return gpio_base2_value(sku_id_gpios, ARRAY_SIZE(sku_id_gpios));
}
static uint8_t board_sku_id(void)
{
static int sku_id = -1;
if (sku_id < 0) {
uint32_t id;
if (google_chromeec_cbi_get_sku_id(&id))
/* TODO: Once transition completes, raise error instead
of returning gpio value which could be unintended. */
/* Reading from EC may succeed next time but we do not
want to return different values. So, we cache the
value read from GPIOs. */
id = read_sku_id_from_gpio();
sku_id = id;
}
return sku_id;
}
/*
@ -162,17 +175,33 @@ static void mainboard_set_power_limits(u32 *pl2_val, u32 *psyspl2_val)
*psyspl2_val = SET_PSYSPL2(psyspl2);
}
static uint8_t board_oem_id(void)
static uint8_t read_oem_id_from_gpio(void)
{
static int id = -1;
const gpio_t oem_id_gpios[] = {
GPIO_OEM_ID1,
GPIO_OEM_ID2,
GPIO_OEM_ID3,
};
if (id < 0)
id = gpio_base2_value(oem_id_gpios, ARRAY_SIZE(oem_id_gpios));
return id;
return gpio_base2_value(oem_id_gpios, ARRAY_SIZE(oem_id_gpios));
}
static uint8_t board_oem_id(void)
{
static int oem_id = -1;
if (oem_id < 0) {
uint32_t id;
if (google_chromeec_cbi_get_oem_id(&id))
/* TODO: Once transition completes, raise error instead
of returning gpio value which could be unintended. */
/* Reading from EC may succeed next time but we do not
want to return different values. So, we cache the
value read from GPIOs. */
id = read_oem_id_from_gpio();
oem_id = id;
}
return oem_id;
}
const char *smbios_mainboard_sku(void)
@ -192,6 +221,8 @@ static void mainboard_init(device_t dev)
static unsigned long mainboard_write_acpi_tables(
device_t device, unsigned long current, acpi_rsdp_t *rsdp)
{
const char *oem_id = "GOOGLE";
const char *oem_table_id = "FIZZ";
uintptr_t start_addr;
uintptr_t end_addr;
struct nhlt *nhlt;
@ -227,8 +258,9 @@ static void set_bj_adapter_limit(void)
uint8_t sku = board_sku_id();
enum bj_adapter bj;
printk(BIOS_INFO, "OEM:%u(0x%x) SKU:%u(0x%x)\n", oem, oem, sku, sku);
if (oem >= OEM_ID_COUNT || sku >= SKU_ID_COUNT) {
printk(BIOS_ERR, "Unrecognized OEM or SKU: %d/%d\n", oem, sku);
printk(BIOS_ERR, "Unrecognized OEM or SKU\n");
return;
}