mb/google/guybrush: Create nipperkin variant

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

(Auto-Generated by create_coreboot_variant.sh version 4.5.0.)

BUG=None
BRANCH=None
TEST=util/abuild/abuild -p none -t google/guybrush -x -a
make sure the build includes GOOGLE_NIPPERKIN

Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: Ie525ea501e6c3d5d94e67c1db1d4e307fb7ccba7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56921
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Bhanu Prakash Maiya <bhanumaiya@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/guybrush/Kconfig

@@ -72,6 +72,7 @@ config MAINBOARD_DIR
 
 config MAINBOARD_PART_NUMBER
 	default "Guybrush" if BOARD_GOOGLE_GUYBRUSH
+	default "Nipperkin" if BOARD_GOOGLE_NIPPERKIN
 
 config AMD_FWM_POSITION_INDEX
 	int
@@ -103,6 +104,7 @@ config EFS_SPI_SPEED
 
 config VARIANT_DIR
 	default "guybrush" if BOARD_GOOGLE_GUYBRUSH
+	default "nipperkin" if BOARD_GOOGLE_NIPPERKIN
 
 config DEVICETREE
 	default "variants/baseboard/devicetree.cb"

src/mainboard/google/guybrush/Kconfig.name

@@ -3,3 +3,7 @@ comment "Guybrush"
 config BOARD_GOOGLE_GUYBRUSH
 	bool "->  Guybrush"
 	select BOARD_GOOGLE_BASEBOARD_GUYBRUSH
+
+config BOARD_GOOGLE_NIPPERKIN
+	bool "-> Nipperkin"
+	select BOARD_GOOGLE_BASEBOARD_GUYBRUSH

src/mainboard/google/guybrush/variants/nipperkin/Makefile.inc

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+subdirs-y += ./memory

src/mainboard/google/guybrush/variants/nipperkin/include/variant/ec.h

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

src/mainboard/google/guybrush/variants/nipperkin/include/variant/gpio.h

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

src/mainboard/google/guybrush/variants/nipperkin/memory/Makefile.inc

@@ -0,0 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-or-later
+## This is an auto-generated file. Do not edit!!
+## Add memory parts in mem_parts_used.txt and run spd_tools to regenerate.
+
+SPD_SOURCES = placeholder.spd.hex

src/mainboard/google/guybrush/variants/nipperkin/memory/dram_id.generated.txt

@@ -0,0 +1 @@
+DRAM Part Name                 ID to assign

src/mainboard/google/guybrush/variants/nipperkin/memory/mem_parts_used.txt

@@ -0,0 +1,11 @@
+# This is a CSV file containing a list of memory parts used by this variant.
+# One part per line with an optional fixed ID in column 2.
+# Only include a fixed ID if it is required for legacy reasons!
+# Generated IDs are dependent on the order of parts in this file,
+# so new parts must always be added at the end of the file!
+#
+# Generate an updated Makefile.inc and dram_id.generated.txt by running the
+# gen_part_id tool from util/spd_tools/{ddr4,lp4x}.
+# See util/spd_tools/{ddr4,lp4x}/README.md for more details and instructions.
+
+# Part Name, Fixed ID (optional)

src/mainboard/google/guybrush/variants/nipperkin/overridetree.cb

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+chip soc/amd/cezanne
+	device domain 0 on
+
+	end # domain
+end	# chip soc/amd/cezanne