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__ */