2 files changed, 119 insertions, 0 deletions
diff --git a/src/mainboard/google/cherry/Makefile.inc b/src/mainboard/google/cherry/Makefile.inc
index a1aa2fd730..4720dc586f 100644
--- a/src/mainboard/google/cherry/Makefile.inc
+++ b/src/mainboard/google/cherry/Makefile.inc
@@ -12,4 +12,5 @@ romstage-y += romstage.c
 
 ramstage-y += memlayout.ld
 ramstage-y += chromeos.c
+ramstage-y += mainboard.c
 ramstage-y += reset.c
diff --git a/src/mainboard/google/cherry/mainboard.c b/src/mainboard/google/cherry/mainboard.c
new file mode 100644
index 0000000000..37d3d1c6e2
--- /dev/null
+++ b/src/mainboard/google/cherry/mainboard.c
@@ -0,0 +1,118 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <bootmode.h>
+#include <console/console.h>
+#include <delay.h>
+#include <device/device.h>
+#include <device/mmio.h>
+#include <gpio.h>
+#include <soc/gpio.h>
+#include <soc/i2c.h>
+#include <soc/mt6360.h>
+#include <soc/regulator.h>
+
+DEFINE_BITFIELD(MSDC0_DRV, 29, 0)
+DEFINE_BITFIELD(MSDC1_DRV, 17, 0)
+DEFINE_BITFIELD(MSDC1_GPIO_MODE0_0, 26, 24)
+DEFINE_BITFIELD(MSDC1_GPIO_MODE0_1, 30, 28)
+DEFINE_BITFIELD(MSDC1_GPIO_MODE1_0, 2, 0)
+DEFINE_BITFIELD(MSDC1_GPIO_MODE1_1, 6, 4)
+DEFINE_BITFIELD(MSDC1_GPIO_MODE1_2, 10, 8)
+DEFINE_BITFIELD(MSDC1_GPIO_MODE1_3, 14, 12)
+
+#define MSDC0_DRV_VALUE	0x1b6db6db
+#define MSDC1_DRV_VALUE	0x1b6db
+#define MSDC1_GPIO_MODE0_VALUE	0x1
+#define MSDC1_GPIO_MODE1_VALUE	0x1
+
+enum {
+	MSDC1_GPIO_MODE0_BASE = 0x100053d0,
+	MSDC1_GPIO_MODE1_BASE = 0x100053e0,
+};
+
+static void configure_emmc(void)
+{
+	void *gpio_base = (void *)IOCFG_TL_BASE;
+	int i;
+
+	const gpio_t emmc_pu_pin[] = {
+		GPIO(EMMC_DAT0), GPIO(EMMC_DAT1),
+		GPIO(EMMC_DAT2), GPIO(EMMC_DAT3),
+		GPIO(EMMC_DAT4), GPIO(EMMC_DAT5),
+		GPIO(EMMC_DAT6), GPIO(EMMC_DAT7),
+		GPIO(EMMC_CMD), GPIO(EMMC_RSTB),
+	};
+
+	const gpio_t emmc_pd_pin[] = {
+		GPIO(EMMC_DSL), GPIO(EMMC_CLK),
+	};
+
+	for (i = 0; i < ARRAY_SIZE(emmc_pu_pin); i++)
+		gpio_set_pull(emmc_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
+
+	for (i = 0; i < ARRAY_SIZE(emmc_pd_pin); i++)
+		gpio_set_pull(emmc_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
+
+	/* set eMMC cmd/dat/clk/ds/rstb pins driving to 8mA */
+	SET32_BITFIELDS(gpio_base, MSDC0_DRV, MSDC0_DRV_VALUE);
+}
+
+static void configure_sdcard(void)
+{
+	void *gpio_base = (void *)IOCFG_RB_BASE;
+	void *gpio_mode0_base = (void *)MSDC1_GPIO_MODE0_BASE;
+	void *gpio_mode1_base = (void *)MSDC1_GPIO_MODE1_BASE;
+	int i;
+
+	const gpio_t sdcard_pu_pin[] = {
+		GPIO(MSDC1_DAT0), GPIO(MSDC1_DAT1),
+		GPIO(MSDC1_DAT2), GPIO(MSDC1_DAT3),
+		GPIO(MSDC1_CMD),
+	};
+
+	const gpio_t sdcard_pd_pin[] = {
+		GPIO(MSDC1_CLK),
+	};
+
+	for (i = 0; i < ARRAY_SIZE(sdcard_pu_pin); i++)
+		gpio_set_pull(sdcard_pu_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_UP);
+
+	for (i = 0; i < ARRAY_SIZE(sdcard_pd_pin); i++)
+		gpio_set_pull(sdcard_pd_pin[i], GPIO_PULL_ENABLE, GPIO_PULL_DOWN);
+
+	/* set sdcard cmd/dat/clk pins driving to 8mA */
+	SET32_BITFIELDS(gpio_base, MSDC1_DRV, MSDC1_DRV_VALUE);
+
+	/* set sdcard dat2/dat0/dat3/cmd/clk pins to msdc1 mode */
+	SET32_BITFIELDS(gpio_mode0_base,
+			MSDC1_GPIO_MODE0_0, MSDC1_GPIO_MODE0_VALUE,
+			MSDC1_GPIO_MODE0_1, MSDC1_GPIO_MODE0_VALUE);
+
+	/* set sdcard dat1 pin to msdc1 mode */
+	SET32_BITFIELDS(gpio_mode1_base,
+			MSDC1_GPIO_MODE1_0, MSDC1_GPIO_MODE1_VALUE,
+			MSDC1_GPIO_MODE1_1, MSDC1_GPIO_MODE1_VALUE,
+			MSDC1_GPIO_MODE1_2, MSDC1_GPIO_MODE1_VALUE,
+			MSDC1_GPIO_MODE1_3, MSDC1_GPIO_MODE1_VALUE);
+
+	mtk_i2c_bus_init(7);
+	mt6360_init(7);
+	mt6360_ldo_enable(MT6360_LDO3, 1);
+	mt6360_ldo_enable(MT6360_LDO5, 1);
+}
+
+static void mainboard_init(struct device *dev)
+{
+	configure_emmc();
+	configure_sdcard();
+}
+
+static void mainboard_enable(struct device *dev)
+{
+	dev->ops->init = &mainboard_init;
+}
+
+struct chip_operations mainboard_ops = {
+	.name = CONFIG_MAINBOARD_PART_NUMBER,
+	.enable_dev = mainboard_enable,
+};