diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2016-12-07 17:34:06 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2016-12-09 17:26:29 +0100 |
| commit | 2b3a6bee77b3fcff721a6c7d34b3316a338bf1cb (patch) | |
| tree | 59ed1d58d74af97c898e1cf2e22501ff0deb339f /src | |
| parent | 26174c97fe00bbb57a0543fce2b30a8877054f60 (diff) | |
| download | coreboot-2b3a6bee77b3fcff721a6c7d34b3316a338bf1cb.tar.xz | |
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>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/reef/mainboard.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/mainboard.c b/src/mainboard/google/reef/mainboard.c index 4425c0184c..e350df226e 100644 --- a/src/mainboard/google/reef/mainboard.c +++ b/src/mainboard/google/reef/mainboard.c @@ -19,9 +19,12 @@ #include <console/console.h> #include <device/device.h> #include <ec/ec.h> +#include <gpio.h> #include <nhlt.h> +#include <smbios.h> #include <soc/gpio.h> #include <soc/nhlt.h> +#include <string.h> #include <vendorcode/google/chromeos/chromeos.h> #include <variant/ec.h> #include <variant/gpio.h> @@ -41,6 +44,35 @@ static void mainboard_init(void *chip_info) 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, const char **oem_table_id, uint32_t *oem_revision) |