diff options
Diffstat (limited to 'src/mainboard/google/gale/boardid.c')
| -rw-r--r-- | src/mainboard/google/gale/boardid.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/src/mainboard/google/gale/boardid.c b/src/mainboard/google/gale/boardid.c index 295550fe2b..3e6fd8a185 100644 --- a/src/mainboard/google/gale/boardid.c +++ b/src/mainboard/google/gale/boardid.c @@ -19,18 +19,8 @@ #include <stdlib.h> /* - * Storm boards dedicate to the board ID three GPIOs in tertiary mode: 29, 30 - * and 68. On proto0 GPIO68 is used and tied low, so it reads as 'zero' by - * gpio_base3_value(), whereas the other two pins are not connected - * and read as 'two'. This results in gpio_base3_value() returning - * 8 on proto0. - * - * Three tertitiary signals could represent 27 different values. To make - * calculated board ID value continuous and starting at zero, offset the - * calculated value by 19 (i.e. 27 - 8) and return modulo 27 of the offset - * number. This results in proto0 returning zero as the board ID, the future - * revisions will have the inputs configured to match the actual board - * revision. + * Gale boards dedicate to the board ID three GPIOs in ternary mode: 64, 65 + * and 66. */ static int board_id_value = -1; @@ -38,11 +28,9 @@ static int board_id_value = -1; static uint8_t get_board_id(void) { uint8_t bid; - gpio_t hw_rev_gpios[] = {[2] = 68, [1] = 30, [0] = 29}; /* 29 is LSB */ - int offset = 19; + gpio_t hw_rev_gpios[] = {[2] = 66, [1] = 65, [0] = 64}; /* 64 is LSB */ bid = gpio_base3_value(hw_rev_gpios, ARRAY_SIZE(hw_rev_gpios)); - bid = (bid + offset) % 27; printk(BIOS_INFO, "Board ID %d\n", bid); return bid; |