mb/google/volteer: Create voxel variant

Create the voxel variant of the volteer reference board

BUG=b:157879197
BRANCH=None
TEST=util/abuild/abuild -p none -t google/volteer -x -a
make sure the build includes GOOGLE_VOXEL

Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Change-Id: I8ba5412be211730db84675927c500238cb20ff3d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41968
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>

src/mainboard/google/volteer/Kconfig

@@ -72,6 +72,7 @@ config MAINBOARD_PART_NUMBER
 	default "Terrador" if BOARD_GOOGLE_TERRADOR
 	default "Trondo" if BOARD_GOOGLE_TRONDO
 	default "Volteer" if BOARD_GOOGLE_VOLTEER
+	default "Voxel" if BOARD_GOOGLE_VOXEL
 
 config MAX_CPUS
 	int
@@ -103,6 +104,7 @@ config VARIANT_DIR
 	default "terrador" if BOARD_GOOGLE_TERRADOR
 	default "trondo" if BOARD_GOOGLE_TRONDO
 	default "volteer" if BOARD_GOOGLE_VOLTEER
+	default "voxel" if BOARD_GOOGLE_VOXEL
 
 config VARIANT_HAS_MIPI_CAMERA
 	bool

src/mainboard/google/volteer/Kconfig.name

@@ -25,3 +25,7 @@ config BOARD_GOOGLE_VOLTEER
 	bool "-> Volteer"
 	select BOARD_GOOGLE_BASEBOARD_VOLTEER
 	select VARIANT_HAS_MIPI_CAMERA
+
+config BOARD_GOOGLE_VOXEL
+	bool "-> Voxel"
+	select BOARD_GOOGLE_BASEBOARD_VOLTEER

src/mainboard/google/volteer/variants/voxel/Makefile.inc

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+SPD_SOURCES =
+
+bootblock-y += gpio.c
+
+ramstage-y += gpio.c

src/mainboard/google/volteer/variants/voxel/gpio.c

@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <commonlib/helpers.h>
+
+/* Pad configuration in ramstage */
+static const struct pad_config gpio_table[] = {
+
+};
+
+const struct pad_config *variant_base_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(gpio_table);
+	return gpio_table;
+}
+
+/* Early pad configuration in bootblock */
+static const struct pad_config early_gpio_table[] = {
+
+};
+
+const struct pad_config *variant_early_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(early_gpio_table);
+	return early_gpio_table;
+}
+
+static const struct cros_gpio cros_gpios[] = {
+};
+
+const struct cros_gpio *variant_cros_gpios(size_t *num)
+{
+	*num = ARRAY_SIZE(cros_gpios);
+	return cros_gpios;
+}

src/mainboard/google/volteer/variants/voxel/include/variant/acpi/dptf.asl

@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/acpi/dptf.asl>

src/mainboard/google/volteer/variants/voxel/include/variant/ec.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __VARIANT_EC_H__
+#define __VARIANT_EC_H__
+
+#include <baseboard/ec.h>
+
+#endif

src/mainboard/google/volteer/variants/voxel/include/variant/gpio.h

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef VARIANT_GPIO_H
+#define VARIANT_GPIO_H
+
+#include <baseboard/gpio.h>
+
+/* Copied from baseboard and may need to change for the new variant. */
+
+#endif

src/mainboard/google/volteer/variants/voxel/overridetree.cb

@@ -0,0 +1,4 @@
+chip soc/intel/tigerlake
+	device domain 0 on
+	end
+end