volteer: Create elemi variant

Create the elemi variant of the volteer reference board by copying
the template files to a new directory named for the variant.

(Auto-Generated by create_coreboot_variant.sh version 4.2.0).

BUG=b:170604353
BRANCH=None
TEST=util/abuild/abuild -p none -t google/volteer -x -a
make sure the build includes GOOGLE_ELEMI

Change-Id: I6013b6d8b28610a79f5ec49d373b2897799bffef
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46294
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>

src/mainboard/google/volteer/Kconfig

@@ -92,6 +92,7 @@ config MAINBOARD_PART_NUMBER
 	default "Volteer2" if BOARD_GOOGLE_VOLTEER2
 	default "Voxel" if BOARD_GOOGLE_VOXEL
 	default "Boldar" if BOARD_GOOGLE_BOLDAR
+	default "Elemi" if BOARD_GOOGLE_ELEMI
 
 config MAX_CPUS
 	int
@@ -129,6 +130,7 @@ config VARIANT_DIR
 	default "volteer2" if BOARD_GOOGLE_VOLTEER2
 	default "voxel" if BOARD_GOOGLE_VOXEL
 	default "boldar" if BOARD_GOOGLE_BOLDAR
+	default "elemi" if BOARD_GOOGLE_ELEMI
 
 config VARIANT_HAS_MIPI_CAMERA
 	bool

src/mainboard/google/volteer/Kconfig.name

@@ -67,3 +67,7 @@ config BOARD_GOOGLE_VOXEL
 config BOARD_GOOGLE_BOLDAR
 	bool "-> Boldar"
 	select BOARD_GOOGLE_BASEBOARD_VOLTEER
+
+config BOARD_GOOGLE_ELEMI
+	bool "-> Elemi"
+	select BOARD_GOOGLE_BASEBOARD_VOLTEER

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

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

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

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef VARIANT_GPIO_H
+#define VARIANT_GPIO_H
+
+#include <baseboard/gpio.h>
+
+/* Memory configuration board straps */
+/* Copied from baseboard and may need to change for the new variant. */
+#define GPIO_MEM_CONFIG_0	GPP_C12
+#define GPIO_MEM_CONFIG_1	GPP_C15
+#define GPIO_MEM_CONFIG_2	GPP_C14
+#define GPIO_MEM_CONFIG_3	GPP_D15
+
+#endif

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

@@ -0,0 +1,6 @@
+chip soc/intel/tigerlake
+
+	device domain 0 on
+	end
+
+end