boardid.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <baseboard/variants.h>
#include <boardid.h>
#include <stddef.h>
#include <ec/acpi/ec.h>
 
#define BOARD_ID_GLK_RVP1_DDR4  0x5 /* RVP1 - DDR4 */
#define BOARD_ID_GLK_RVP2_LP4SD 0x7 /* RVP2 - LP4 Solder Down */
#define BOARD_ID_GLK_RVP2_LP4   0x8 /* RVP2 - LP4 Socket */
#define EC_FAB_ID_CMD   0x0D /* Get the board fab ID in the lower 3 bits */
 
uint32_t board_id(void)
{
        MAYBE_STATIC_NONZERO int id = -1;
        if (id < 0) {
                if (CONFIG(EC_GOOGLE_CHROMEEC))
                        id = variant_board_id();
                else {
                        if (send_ec_command(EC_FAB_ID_CMD) == 0)
                                id = (recv_ec_data() & 0x07);
                }
        }
        return id;
}