mainboard/google/reef: add board SKU'ing support

There are 2 gpios on reef-like boards that can be composed
into a SKU. Add support for identifying the SKU value using
the base 3 gpio logic. Also export the SKU information to the
SMBIOS type 1 table.

BUG=chrome-os-partner:59887,chrome-os-partner:60494
BRANCH=reef

Change-Id: I8bb94207b0b7833d758054a817b655e248f1b239
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17771
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Aaron Durbin 2016-12-07 17:34:06 -06:00
parent 26174c97fe
commit 2b3a6bee77
1 changed files with 32 additions and 0 deletions

View File

@ -19,9 +19,12 @@
#include <console/console.h> #include <console/console.h>
#include <device/device.h> #include <device/device.h>
#include <ec/ec.h> #include <ec/ec.h>
#include <gpio.h>
#include <nhlt.h> #include <nhlt.h>
#include <smbios.h>
#include <soc/gpio.h> #include <soc/gpio.h>
#include <soc/nhlt.h> #include <soc/nhlt.h>
#include <string.h>
#include <vendorcode/google/chromeos/chromeos.h> #include <vendorcode/google/chromeos/chromeos.h>
#include <variant/ec.h> #include <variant/ec.h>
#include <variant/gpio.h> #include <variant/gpio.h>
@ -41,6 +44,35 @@ static void mainboard_init(void *chip_info)
mainboard_ec_init(); mainboard_ec_init();
} }
/*
* There are 2 pins on reef-like boards that can be used for SKU'ing
* board differences. They each have optional stuffing for a pullup and
* a pulldown. This way we can generate 9 different values with the
* 2 pins.
*/
static int board_sku(void)
{
static int board_sku_num = -1;
gpio_t board_sku_gpios[] = {
[1] = GPIO_17, [0] = GPIO_16,
};
const size_t num = ARRAY_SIZE(board_sku_gpios);
if (board_sku_num < 0)
board_sku_num = gpio_base3_value(board_sku_gpios, num);
return board_sku_num;
}
const char *smbios_mainboard_sku(void)
{
static char sku_str[5]; /* sku[0-8] */
snprintf(sku_str, sizeof(sku_str), "sku%d", board_sku());
return sku_str;
}
void __attribute__((weak)) variant_nhlt_oem_overrides(const char **oem_id, void __attribute__((weak)) variant_nhlt_oem_overrides(const char **oem_id,
const char **oem_table_id, const char **oem_table_id,
uint32_t *oem_revision) uint32_t *oem_revision)