mb/google/volteer: add volteer mainboard initial support

Created a new Google baseboard named volteer from scratch.

BUG=b:142961277
BRANCH=master
TEST="emerge-volteer coreboot" compiles successfully.

Change-Id: I03a13f3df4e819ab9cf63ad69867c807d2a1b651
Signed-off-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38620
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/src/mainboard/google/volteer/mainboard.c b/src/mainboard/google/volteer/mainboard.c
new file mode 100644
index 0000000000..51cbc40cfc
--- /dev/null
+++ b/src/mainboard/google/volteer/mainboard.c
@@ -0,0 +1,79 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2020 The coreboot project Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <console/console.h>
+#include <arch/acpi.h>
+#include <baseboard/variants.h>
+#include <device/device.h>
+#include <ec/ec.h>
+#include <ec/google/chromeec/ec.h>
+#include <soc/gpio.h>
+#include <smbios.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+#include <variant/gpio.h>
+
+#define SKU_UNKNOWN		0xFFFFFFFF
+#define SKU_MAX			0x7FFFFFFF
+
+static uint32_t get_board_sku(void)
+{
+	static uint32_t sku_id = SKU_UNKNOWN;
+
+	if (sku_id != SKU_UNKNOWN)
+		return sku_id;
+
+	if (google_chromeec_cbi_get_sku_id(&sku_id))
+		sku_id = SKU_UNKNOWN;
+
+	return sku_id;
+}
+
+const char *smbios_system_sku(void)
+{
+	static char sku_str[14]; /* sku{0..2147483647} */
+	uint32_t sku_id = get_board_sku();
+
+	if ((sku_id == SKU_UNKNOWN) || (sku_id > SKU_MAX)) {
+		printk(BIOS_ERR, "%s: Unexpected SKU ID %u\n",
+			__func__, sku_id);
+		return "";
+	}
+
+	snprintf(sku_str, sizeof(sku_str), "sku%u", sku_id);
+
+	return sku_str;
+}
+
+static void mainboard_init(struct device *dev)
+{
+	mainboard_ec_init();
+}
+
+static void mainboard_enable(struct device *dev)
+{
+	dev->ops->init = mainboard_init;
+	dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
+}
+
+static void mainboard_chip_init(void *chip_info)
+{
+	const struct pad_config *base_pads;
+	const struct pad_config *override_pads;
+	size_t base_num, override_num;
+
+	base_pads = variant_base_gpio_table(&base_num);
+	override_pads = variant_override_gpio_table(&override_num);
+
+	gpio_configure_pads_with_override(base_pads, base_num,
+		override_pads, override_num);
+}
+
+struct chip_operations mainboard_ops = {
+	.init = mainboard_chip_init,
+	.enable_dev = mainboard_enable,
+};