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 <types.h> 7 #include "board_id.h" 8 get_board_id_via_ext_ec(void)9static uint32_t get_board_id_via_ext_ec(void) 10 { 11 uint32_t id = BOARD_ID_INIT; 12 13 if (google_chromeec_get_board_version(&id)) 14 id = BOARD_ID_UNKNOWN; 15 16 return id; 17 } 18 19 /* Get Board ID via EC I/O port write/read */ get_board_id(void)20int get_board_id(void) 21 { 22 static int id = -1; 23 24 if (id < 0) { 25 if (CONFIG(EC_GOOGLE_CHROMEEC)) { 26 id = get_board_id_via_ext_ec(); 27 } else { 28 if (send_ec_command(EC_FAB_ID_CMD) == 0) { 29 id = recv_ec_data() << 8; 30 id |= recv_ec_data(); 31 } 32 } 33 } 34 return (id & BOARD_ID_MASK); 35 } 36