/* SPDX-License-Identifier: GPL-2.0-only */ /* This file is part of the coreboot project. */ #include <boardid.h> #include <gpio.h> #include <console/console.h> /* * Gale boards dedicate to the board ID three GPIOs in ternary mode: 64, 65 * and 66. */ static int board_id_value = -1; static uint8_t get_board_id(void) { uint8_t bid; gpio_t hw_rev_gpios[] = {[2] = 66, [1] = 65, [0] = 64}; /* 64 is LSB */ bid = gpio_binary_first_base3_value(hw_rev_gpios, ARRAY_SIZE(hw_rev_gpios)); printk(BIOS_INFO, "Board ID %d\n", bid); return bid; } uint32_t board_id(void) { if (board_id_value < 0) board_id_value = get_board_id(); return board_id_value; }