mainboard/google/reef: add variant API for board_id and gpio

Provide APIs for the board_id() and gpio table functionality.
Default and weak implementations are provided from the baseboard.

BUG=chrome-os-partner:56677

Change-Id: I02d8deb7f60f8c4842916a9d35f51d8af74b1da4
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/16419
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/mainboard/google/reef/variants/baseboard/boardid.c b/src/mainboard/google/reef/variants/baseboard/boardid.c
new file mode 100644
index 0000000000..26f158809d
--- /dev/null
+++ b/src/mainboard/google/reef/variants/baseboard/boardid.c
@@ -0,0 +1,22 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2016 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <baseboard/variants.h>
+#include <ec/google/chromeec/ec.h>
+
+uint8_t __attribute__((weak)) variant_board_id(void)
+{
+	return google_chromeec_get_board_version();
+}