1 files changed, 40 insertions, 0 deletions
diff --git a/src/mainboard/google/kukui/early_init.c b/src/mainboard/google/kukui/early_init.c
new file mode 100644
index 0000000000..a16a335bc4
--- /dev/null
+++ b/src/mainboard/google/kukui/early_init.c
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2019 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <gpio.h>
+#include <soc/mt8183.h>
+#include <soc/spi.h>
+
+#include "early_init.h"
+#include "gpio.h"
+
+#define BOOTBLOCK_EN_L (GPIO(KPROW0))
+#define AP_IN_SLEEP_L (GPIO(SRCLKENA0))
+
+void mainboard_early_init(void)
+{
+	mt8183_early_init();
+
+	/* Turn on real eMMC and allow communication to EC. */
+	gpio_output(BOOTBLOCK_EN_L, 1);
+
+	setup_chromeos_gpios();
+
+	/* Declare we are in S0 */
+	gpio_output(AP_IN_SLEEP_L, 1);
+
+	mtk_spi_init(CONFIG_DRIVER_TPM_SPI_BUS, SPI_PAD0_MASK, 1 * MHz);
+	gpio_eint_configure(CR50_IRQ, IRQ_TYPE_EDGE_RISING);
+}