mb/google/poppy : Get SKU_ID from EC for Nami/Vayne

CBI abbreviates Cros Board Info.

BUG=b:74177699
BRANCH=master
TEST=Verify CPU log shows expected SKU ID on Nami.

Change-Id: I42dd177de8c49cf3c122c2ebb1fcf42e5ba4cd75
Signed-off-by: amanda_hwang <amanda_hwang@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/24996
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/src/mainboard/google/poppy/variants/nami/mainboard.c b/src/mainboard/google/poppy/variants/nami/mainboard.c
new file mode 100644
index 0000000000..5b3e2ea6a6
--- /dev/null
+++ b/src/mainboard/google/poppy/variants/nami/mainboard.c
@@ -0,0 +1,51 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 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 <chip.h>
+#include <device/device.h>
+#include <ec/google/chromeec/ec.h>
+#include <baseboard/variants.h>
+
+#define SKU_UNKNOWN	0xFFFF
+#define SKU_0_NAMI	0x3A7B
+#define SKU_1_VAYNE	0x3A63
+#define SKU_2_VAYNE	0x3A7F
+
+static uint16_t board_sku_id(void)
+{
+	static int sku_id = -1;
+	uint32_t id;
+	if (sku_id >= 0)
+		return sku_id;
+	if (google_chromeec_cbi_get_sku_id(&id))
+		return SKU_UNKNOWN;
+	sku_id = id;
+	return sku_id;
+}
+
+void variant_devtree_update(void)
+{
+	/* Override dev tree settings per board */
+	uint16_t sku_id = board_sku_id();
+	device_t root = SA_DEV_ROOT;
+	config_t *cfg = root->chip_info;
+	switch (sku_id) {
+	case SKU_1_VAYNE:
+		cfg->usb2_ports[5].enable = 0;//rear camera
+		break;
+	default:
+		break;
+	}
+}