mb/google/dedede: Add waddledoo variant

Add initial support for waddledoo board.

BUG=None
TEST=Build the mainboard and variant board.

Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: I8ab4d52c97b1cfb5549d2fce4b931748a1b1ff1a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38857
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/dedede/Kconfig

@@ -44,12 +44,17 @@ config MAINBOARD_FAMILY
 
 config MAINBOARD_PART_NUMBER
 	string
-	default "dedede" if BOARD_GOOGLE_DEDEDE
+	default "Dedede" if BOARD_GOOGLE_DEDEDE
+	default "Waddledoo" if BOARD_GOOGLE_WADDLEDOO
 
 config MAX_CPUS
 	int
 	default 4
 
+config OVERRIDE_DEVICETREE
+	string
+	default "variants/$(CONFIG_VARIANT_DIR)/overridetree.cb" if !BOARD_GOOGLE_DEDEDE
+
 config TPM_TIS_ACPI_INTERRUPT
 	int
 	default 4  # GPE0_DW0_4 (GPP_B4)
@@ -61,5 +66,6 @@ config UART_FOR_CONSOLE
 config VARIANT_DIR
 	string
 	default "dedede" if BOARD_GOOGLE_DEDEDE
+	default "waddledoo" if BOARD_GOOGLE_WADDLEDOO
 
 endif #BOARD_GOOGLE_BASEBOARD_DEDEDE

src/mainboard/google/dedede/Kconfig.name

@@ -3,3 +3,9 @@ config BOARD_GOOGLE_DEDEDE
 	select BOARD_GOOGLE_BASEBOARD_DEDEDE
 	select BASEBOARD_DEDEDE_LAPTOP
 	select BOARD_ROMSIZE_KB_32768
+
+config BOARD_GOOGLE_WADDLEDOO
+	bool "Waddledoo"
+	select BOARD_GOOGLE_BASEBOARD_DEDEDE
+	select BASEBOARD_DEDEDE_LAPTOP
+	select BOARD_ROMSIZE_KB_32768

src/mainboard/google/dedede/variants/waddledoo/include/variant/ec.h

@@ -0,0 +1,14 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2020 The coreboot project Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef MAINBOARD_EC_H
+#define MAINBOARD_EC_H
+
+#include <baseboard/ec.h>
+
+#endif

src/mainboard/google/dedede/variants/waddledoo/include/variant/gpio.h

@@ -0,0 +1,14 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2020 The coreboot project Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef MAINBOARD_GPIO_H
+#define MAINBOARD_GPIO_H
+
+#include <baseboard/gpio.h>
+
+#endif /* MAINBOARD_GPIO_H */

src/mainboard/google/dedede/variants/waddledoo/overridetree.cb

@@ -0,0 +1,3 @@
+chip soc/intel/tigerlake
+	device domain 0 on end
+end