7 files changed, 70 insertions, 1 deletions
diff --git a/src/mainboard/google/brya/Kconfig b/src/mainboard/google/brya/Kconfig
index 4a9f2e15b1..f955b64924 100644
--- a/src/mainboard/google/brya/Kconfig
+++ b/src/mainboard/google/brya/Kconfig
@@ -4,6 +4,7 @@ config BOARD_GOOGLE_BASEBOARD_BRYA
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select INTEL_LPSS_UART_FOR_CONSOLE
+	select MAINBOARD_HAS_CHROMEOS
 	select SOC_INTEL_ALDERLAKE
 
 if BOARD_GOOGLE_BASEBOARD_BRYA
@@ -12,6 +13,11 @@ config BASEBOARD_BRYA_LAPTOP
 	def_bool n
 	select SYSTEM_TYPE_LAPTOP
 
+config CHROMEOS
+	bool
+	default y
+	select VBOOT_LID_SWITCH
+
 config DEVICETREE
 	string
 	default "variants/baseboard/devicetree.cb"
diff --git a/src/mainboard/google/brya/Makefile.inc b/src/mainboard/google/brya/Makefile.inc
index cdd0eb6ef8..fda1bfb990 100644
--- a/src/mainboard/google/brya/Makefile.inc
+++ b/src/mainboard/google/brya/Makefile.inc
@@ -1,7 +1,11 @@
 bootblock-y += bootblock.c
 
+verstage-$(CONFIG_CHROMEOS) += chromeos.c
+
+romstage-$(CONFIG_CHROMEOS) += chromeos.c
 romstage-y += romstage.c
 
+ramstage-$(CONFIG_CHROMEOS) += chromeos.c
 ramstage-y += mainboard.c
 
 VARIANT_DIR:=$(call strip_quotes,$(CONFIG_VARIANT_DIR))
diff --git a/src/mainboard/google/brya/chromeos.c b/src/mainboard/google/brya/chromeos.c
new file mode 100644
index 0000000000..2e6ea3e27d
--- /dev/null
+++ b/src/mainboard/google/brya/chromeos.c
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <boot/coreboot_tables.h>
+#include <gpio.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+void fill_lb_gpios(struct lb_gpios *gpios)
+{
+	struct lb_gpio chromeos_gpios[] = {
+		{-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
+		{-1, ACTIVE_HIGH, 0, "power"},
+		{-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
+	};
+	lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
+}
+
+int get_lid_switch(void)
+{
+	/* TODO: use Chrome EC switches when EC support is added */
+	return 1;
+}
+
+int get_recovery_mode_switch(void)
+{
+	/* TODO: use Chrome EC switches when EC support is added */
+	return 0;
+}
+
+int get_write_protect_state(void)
+{
+	/* No write protect */
+	return 0;
+}
+
+void mainboard_chromeos_acpi_generate(void)
+{
+	const struct cros_gpio *gpios;
+	size_t num;
+	gpios = variant_cros_gpios(&num);
+	chromeos_acpi_gpio_generate(gpios, num);
+}
diff --git a/src/mainboard/google/brya/dsdt.asl b/src/mainboard/google/brya/dsdt.asl
index ebb6ec58f0..4fc205a24b 100644
--- a/src/mainboard/google/brya/dsdt.asl
+++ b/src/mainboard/google/brya/dsdt.asl
@@ -30,4 +30,7 @@ DefinitionBlock(
 
 	/* Chipset specific sleep states */
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
+
+	/* Chrome OS specific */
+	#include <vendorcode/google/chromeos/acpi/chromeos.asl>
 }
diff --git a/src/mainboard/google/brya/mainboard.c b/src/mainboard/google/brya/mainboard.c
index d7c31565b9..fd0d5b651f 100644
--- a/src/mainboard/google/brya/mainboard.c
+++ b/src/mainboard/google/brya/mainboard.c
@@ -1,7 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 
+#include <acpi/acpi.h>
 #include <baseboard/variants.h>
 #include <device/device.h>
+#include <vendorcode/google/chromeos/chromeos.h>
 
 static void mainboard_init(void *chip_info)
 {
@@ -13,7 +15,7 @@ static void mainboard_init(void *chip_info)
 
 static void mainboard_enable(struct device *dev)
 {
-	/* TODO: Enable mainboard */
+	dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
 }
 
 struct chip_operations mainboard_ops = {
diff --git a/src/mainboard/google/brya/variants/baseboard/gpio.c b/src/mainboard/google/brya/variants/baseboard/gpio.c
index 39450cee10..12e725f70c 100644
--- a/src/mainboard/google/brya/variants/baseboard/gpio.c
+++ b/src/mainboard/google/brya/variants/baseboard/gpio.c
@@ -3,6 +3,7 @@
 #include <baseboard/gpio.h>
 #include <baseboard/variants.h>
 #include <commonlib/helpers.h>
+#include <vendorcode/google/chromeos/chromeos.h>
 
 /* Pad configuration in ramstage */
 static const struct pad_config gpio_table[] = {
@@ -25,3 +26,12 @@ const struct pad_config *__weak 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 *__weak variant_cros_gpios(size_t *num)
+{
+	*num = ARRAY_SIZE(cros_gpios);
+	return cros_gpios;
+}
diff --git a/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
index 95f2d65a24..663306c291 100644
--- a/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
@@ -12,5 +12,6 @@
 
 const struct pad_config *variant_gpio_table(size_t *num);
 const struct pad_config *variant_early_gpio_table(size_t *num);
+const struct cros_gpio *variant_cros_gpios(size_t *num);
 
 #endif /*__BASEBOARD_VARIANTS_H__ */