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google/snappy: Override SKU ID by VPD 

Since snappy PCB may have over 9 SKU and current GPIO board ID GP16/GP17
is insufficient to use.
Using VPD to control could prevent H/W change.

BUG=b:65339688
BRANCH=reef
TEST=emerge-snappy coreboot
Change-Id: I55ab741354797e022dd945da9c8499ee5e041316
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21533
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Kevin Chiu 2017-09-14 11:05:57 +08:00 committed by Aaron Durbin
parent a871059ef2
commit b6850ddbff
1 changed files with 43 additions and 0 deletions
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43
src/mainboard/google/reef/variants/snappy/mainboard.c
View File

@ -13,10 +13,53 @@
* GNU General Public License for more details.
*/
#include <string.h>
#include <baseboard/variants.h>
#include <ec/google/chromeec/ec.h>
#include <vendorcode/google/chromeos/cros_vpd.h>
void variant_board_ec_set_skuid(void)
{
google_chromeec_set_sku_id(variant_board_sku());
}
/*
* override SKU ID by VPD definition
*/
uint8_t variant_board_sku(void)
{
static int board_sku_num = -1;
int vpd_sku_num;
char vpd_skuid[] = "skuid";
char vpd_buffer[4];
int vpd_len;
int i;
if (board_sku_num != -1)
return board_sku_num;
board_sku_num = sku_strapping_value();
if (!IS_ENABLED(CONFIG_CHROMEOS))
return board_sku_num;
if (!cros_vpd_gets(vpd_skuid, vpd_buffer, ARRAY_SIZE(vpd_buffer)))
return board_sku_num;
vpd_len = strlen(vpd_buffer);
vpd_sku_num = 0;
for (i = 0; i < vpd_len; i++) {
char ch = vpd_buffer[i];
if ((ch < '0') || (ch > '9')) {
vpd_sku_num = -1;
break;
} else
vpd_sku_num = vpd_sku_num * 10 + (ch - '0');
}
if (vpd_sku_num != -1)
board_sku_num = vpd_sku_num;
return board_sku_num;
}