mb/google/deltaur: Return SKU ID info

For Deltaur and Deltan variants return proper SKU ID based on EC
firmware type and sensor detect GPIO value

BUG=b:152544516
TEST=make build successful for deltan

Change-Id: I20a497739e5062400b093648c3a634203dec6105
Signed-off-by: Anil Kumar <anil.kumar.k@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39868
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>

src/mainboard/google/deltaur/variants/baseboard/Makefile.inc

@@ -7,5 +7,6 @@
 bootblock-y += gpio.c
 
 ramstage-y += gpio.c
+ramstage-y += sku.c
 
 verstage-y += gpio.c

src/mainboard/google/deltaur/variants/baseboard/gpio.c

@@ -468,3 +468,8 @@ const struct pad_config *__weak variant_early_gpio_table(size_t *num)
 	*num = ARRAY_SIZE(early_gpio_table);
 	return early_gpio_table;
 }
+
+int __weak has_360_sensor_board(void)
+{
+	return 0;
+}

src/mainboard/google/deltaur/variants/baseboard/include/baseboard/variants.h

@@ -25,4 +25,13 @@ const struct cros_gpio *variant_cros_gpios(size_t *num);
 const struct lpddr4x_cfg *variant_memory_params(void);
 void variant_memory_init(FSP_M_CONFIG *mem_cfg);
 
+/* SKU ID structure */
+typedef struct {
+	int id;
+	const char *name;
+} sku_info;
+
+/* Check if the device has a 360 sensor board present */
+int has_360_sensor_board(void);
+
 #endif /* __BASEBOARD_VARIANTS_H__ */

src/mainboard/google/deltaur/variants/baseboard/sku.c

@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <baseboard/variants.h>
+#include <boardid.h>
+#include <ec/google/wilco/commands.h>
+#include <smbios.h>
+#include <variant/variant.h>
+
+static const uint32_t get_sku_index(void)
+{
+	return ((!has_360_sensor_board()) | (wilco_ec_signed_fw() << 1));
+}
+
+const uint32_t sku_id(void)
+{
+	return skus[get_sku_index()].id;
+}
+
+const char *smbios_system_sku(void)
+{
+	return skus[get_sku_index()].name;
+}

src/mainboard/google/deltaur/variants/deltan/include/variant/variant.h

@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef VARIANT_H
+#define VARIANT_H
+
+#include <baseboard/variants.h>
+#include <gpio.h>
+#include <variant/gpio.h>
+
+const static sku_info skus[] = {
+	/* Deltan 360 - invalid configuration */
+	{ .id = -1, .name = "sku_invalid" },
+	/* Deltan */
+	{ .id = 1, .name = "sku1" },
+	/* Deltan 360 signed - invalid configuration */
+	{ .id = -1, .name = "sku_invalid" },
+	/* Deltan signed */
+	{ .id = 2, .name = "sku2" },
+};
+
+#endif

src/mainboard/google/deltaur/variants/deltaur/gpio.c

@@ -7,6 +7,8 @@
 #include <baseboard/gpio.h>
 #include <baseboard/variants.h>
 #include <commonlib/helpers.h>
+#include <gpio.h>
+#include <variant/variant.h>
 
 /* Pad configuration in ramstage */
 static const struct pad_config gpio_table[] = {
@@ -29,3 +31,9 @@ const struct pad_config *variant_early_gpio_table(size_t *num)
 	*num = ARRAY_SIZE(early_gpio_table);
 	return early_gpio_table;
 }
+
+/* Check if the device has a 360 sensor board present */
+int has_360_sensor_board(void)
+{
+	return gpio_get(SENSOR_DET_360) == 0;
+}

src/mainboard/google/deltaur/variants/deltaur/include/variant/variant.h

@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef VARIANT_H
+#define VARIANT_H
+
+#include <baseboard/variants.h>
+
+/* TODO b/153027724: Sensor detection pin */
+#define SENSOR_DET_360          GPP_C10
+
+const static sku_info skus[] = {
+	/* Deltaur 360 */
+	{ .id = 1, .name = "sku1" },
+	/* Deltaur */
+	{ .id = 2, .name = "sku2" },
+	/* Deltaur 360 signed */
+	{ .id = 3, .name = "sku3" },
+	/* Deltaur signed */
+	{ .id = 4, .name = "sku4" },
+};
+
+#endif