mb/google/cherry: Enable Chrome EC

Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Change-Id: Iab3549b5c4e7d845ddd284a0df3fb448e11fbdcb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53899
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

src/mainboard/google/cherry/Kconfig

@@ -6,14 +6,22 @@ config BOARD_GOOGLE_CHERRY_COMMON
 
 if BOARD_GOOGLE_CHERRY_COMMON
 
+config VBOOT
+	select EC_GOOGLE_CHROMEEC_SWITCHES
+	select VBOOT_VBNV_FLASH
+
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select SOC_MEDIATEK_MT8195
 	select BOARD_ROMSIZE_KB_8192
 	select MAINBOARD_HAS_CHROMEOS
+	select CHROMEOS_USE_EC_WATCHDOG_FLAG if CHROMEOS
 	select COMMON_CBFS_SPI_WRAPPER
 	select SPI_FLASH
 	select SPI_FLASH_INCLUDE_ALL_DRIVERS
+	select EC_GOOGLE_CHROMEEC
+	select EC_GOOGLE_CHROMEEC_BOARDID
+	select EC_GOOGLE_CHROMEEC_SPI
 
 config MAINBOARD_DIR
 	string
@@ -28,4 +36,8 @@ config MAINBOARD_PART_NUMBER
 config BOOT_DEVICE_SPI_FLASH_BUS
 	int
 	default 7
+
+config EC_GOOGLE_CHROMEEC_SPI_BUS
+	hex
+	default 0x0
 endif

src/mainboard/google/cherry/bootblock.c

@@ -3,6 +3,7 @@
 #include <bootblock_common.h>
 #include <device/mmio.h>
 #include <soc/gpio.h>
+#include <soc/spi.h>
 
 #include "gpio.h"
 
@@ -35,6 +36,7 @@ static void nor_set_gpio_pinmux(void)
 
 void bootblock_mainboard_init(void)
 {
+	mtk_spi_init(CONFIG_EC_GOOGLE_CHROMEEC_SPI_BUS, SPI_PAD0_MASK, 3 * MHz, 0);
 	nor_set_gpio_pinmux();
 	setup_chromeos_gpios();
 }

src/mainboard/google/cherry/chromeos.c

@@ -28,9 +28,3 @@ void fill_lb_gpios(struct lb_gpios *gpios)
 	};
 	lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
 }
-
-int get_recovery_mode_switch(void)
-{
-	/* TODO: use Chrome EC switches when EC support is added */
-	return 0;
-}

src/mainboard/google/cherry/reset.c

@@ -1,7 +1,11 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <gpio.h>
 #include <reset.h>
 
+#include "gpio.h"
+
 void do_board_reset(void)
 {
+	gpio_output(GPIO_RESET, 1);
 }