src/mainboard/intel/icelake_rvp/board_id.c

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