mb/google/nissa: Create a riven variant

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

The riven variant is a twinlake platform.

BUG=b:337169542
TEST=util/abuild/abuild -p none -t google/brya -x -a
make sure the build includes GOOGLE_RIVEN

Change-Id: I1be2346d87c891cc0e5fbda094e1f6e0dd60df1b
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82132
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/Kconfig

@@ -443,6 +443,10 @@ config BOARD_GOOGLE_REDRIX4ES
 	select GOOGLE_DSM_PARAM_FILE_NAME if VPD
 	select SOC_INTEL_COMMON_BLOCK_IPU
 
+config BOARD_GOOGLE_RIVEN
+	select BOARD_GOOGLE_BASEBOARD_NISSA
+	select SOC_INTEL_TWINLAKE
+
 config BOARD_GOOGLE_SKOLAS
 	select BOARD_GOOGLE_BASEBOARD_BRYA
 	select DRIVERS_GENERIC_NAU8315
@@ -645,6 +649,7 @@ config DRIVER_TPM_I2C_BUS
 	default 0x0 if BOARD_GOOGLE_QUANDISO
 	default 0x1 if BOARD_GOOGLE_REDRIX
 	default 0x3 if BOARD_GOOGLE_REDRIX4ES
+	default 0x0 if BOARD_GOOGLE_RIVEN
 	default 0x1 if BOARD_GOOGLE_SKOLAS
 	default 0x1 if BOARD_GOOGLE_SKOLAS4ES
 	default 0x1 if BOARD_GOOGLE_TAEKO
@@ -733,6 +738,7 @@ config MAINBOARD_PART_NUMBER
 	default "Quandiso" if BOARD_GOOGLE_QUANDISO
 	default "Redrix" if BOARD_GOOGLE_REDRIX
 	default "Redrix4ES" if BOARD_GOOGLE_REDRIX4ES
+	default "Riven" if BOARD_GOOGLE_RIVEN
 	default "Skolas" if BOARD_GOOGLE_SKOLAS
 	default "Skolas4ES" if BOARD_GOOGLE_SKOLAS4ES
 	default "Sundance" if BOARD_GOOGLE_SUNDANCE
@@ -796,6 +802,7 @@ config VARIANT_DIR
 	default "quandiso" if BOARD_GOOGLE_QUANDISO
 	default "redrix" if BOARD_GOOGLE_REDRIX
 	default "redrix4es" if BOARD_GOOGLE_REDRIX4ES
+	default "riven" if BOARD_GOOGLE_RIVEN
 	default "skolas" if BOARD_GOOGLE_SKOLAS
 	default "skolas4es" if BOARD_GOOGLE_SKOLAS4ES
 	default "sundance" if BOARD_GOOGLE_SUNDANCE

src/mainboard/google/brya/Kconfig.name

@@ -122,6 +122,9 @@ config BOARD_GOOGLE_REDRIX
 config BOARD_GOOGLE_REDRIX4ES
 	bool "->  Redrix4ES"
 
+config BOARD_GOOGLE_RIVEN
+	bool "->  Riven"
+
 config BOARD_GOOGLE_SKOLAS
 	bool "->  Skolas"
 

src/mainboard/google/brya/variants/riven/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/brya/variants/riven/include/variant/gpio.h

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

src/mainboard/google/brya/variants/riven/memory/Makefile.mk

@@ -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

src/mainboard/google/brya/variants/riven/memory/dram_id.generated.txt

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

src/mainboard/google/brya/variants/riven/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.mk and dram_id.generated.txt by running the
+# part_id_gen tool from util/spd_tools.
+# See util/spd_tools/README.md for more details and instructions.
+
+# Part Name

src/mainboard/google/brya/variants/riven/overridetree.cb

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