src/ec/intel/board_id.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <boardid.h>
   4 #include "board_id.h"
   5 #include <ec/acpi/ec.h>
   6 #include <ec/google/chromeec/ec.h>
   7 #include <types.h>
   8
   9 static 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 */
  20 int get_rvp_board_id(void)
  21 {
  22         static int id = BOARD_ID_UNKNOWN;
  23
  24         if (CONFIG(EC_GOOGLE_CHROMEEC)) { /* CHROME_EC */
  25                 id = get_board_id_via_ext_ec();
  26         } else { /* WINDOWS_EC */
  27                 if (send_ec_command(EC_FAB_ID_CMD) == 0) {
  28                         id = recv_ec_data() << 8;
  29                         id |= recv_ec_data();
  30                 }
  31         }
  32         return (id & BOARD_ID_MASK);
  33 }