1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #include <boardid.h> 4 #include <ec/acpi/ec.h> 5 #include <ec/google/chromeec/ec.h> 6 #include <stdint.h> 7 8 #include "board_id.h" 9 get_board_id_via_ext_ec(void)10static uint32_t get_board_id_via_ext_ec(void) 11 { 12 uint32_t id = BOARD_ID_INIT; 13 14 if (google_chromeec_get_board_version(&id)) 15 id = BOARD_ID_UNKNOWN; 16 17 return id; 18 } 19 20 /* Get Board ID via EC I/O port write/read */ get_board_id(void)21int get_board_id(void) 22 { 23 static int id = -1; 24 25 if (id < 0) { 26 if (CONFIG(EC_GOOGLE_CHROMEEC)) { 27 id = get_board_id_via_ext_ec(); 28 } else { 29 uint8_t buffer[2]; 30 uint8_t index; 31 if (send_ec_command(EC_FAB_ID_CMD) == 0) { 32 for (index = 0; index < sizeof(buffer); index++) 33 buffer[index] = recv_ec_data(); 34 id = (buffer[0] << 8) | buffer[1]; 35 } 36 } 37 } 38 return id; 39 } 40