1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef __INCLUDE_BOARDID_H__ 4 #define __INCLUDE_BOARDID_H__ 5 6 #include <stdint.h> 7 8 #define UNDEFINED_STRAPPING_ID (~0) 9 10 #define BOARD_ID_UNKNOWN ~((uint32_t)0) /* unsigned equivalent to -1 */ 11 #define BOARD_ID_INIT ~((uint32_t)1) /* unsigned equivalent to -2 */ 12 /** 13 * board_id() - Get the board version 14 * 15 * Return: board version on success, BOARD_ID_UNKNOWN on failure/error. 16 * 17 * This function is used to get the mainboard version. 18 */ 19 uint32_t board_id(void); /* differentiates revisions */ 20 uint32_t ram_code(void); /* identifies installed DRAM modules */ 21 uint32_t sku_id(void); /* differentiates other optional components */ 22 23 #endif /* __INCLUDE_BOARDID_H__ */ 24