src/mainboard/intel/glkrvp/boardid.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <baseboard/variants.h>
   4 #include <boardid.h>
   5 #include <stddef.h>
   6 #include <ec/acpi/ec.h>
   7
   8 #define BOARD_ID_GLK_RVP1_DDR4  0x5 /* RVP1 - DDR4 */
   9 #define BOARD_ID_GLK_RVP2_LP4SD 0x7 /* RVP2 - LP4 Solder Down */
  10 #define BOARD_ID_GLK_RVP2_LP4   0x8 /* RVP2 - LP4 Socket */
  11 #define EC_FAB_ID_CMD   0x0D /* Get the board fab ID in the lower 3 bits */
  12
  13 uint32_t board_id(void)
  14 {
  15         MAYBE_STATIC_NONZERO int id = -1;
  16         if (id < 0) {
  17                 if (CONFIG(EC_GOOGLE_CHROMEEC))
  18                         id = variant_board_id();
  19                 else {
  20                         if (send_ec_command(EC_FAB_ID_CMD) == 0)
  21                                 id = (recv_ec_data() & 0x07);
  22                 }
  23         }
  24         return id;
  25 }