From 7c06dd9e2628fdd8b7f501383f5dad3c9dfdf8d6 Mon Sep 17 00:00:00 2001
From: Yidi Lin <yidi.lin@mediatek.com>
Date: Thu, 8 Apr 2021 09:55:11 +0800
Subject: mb/google/cherry: Pass reset gpio parameter to BL31

To support gpio reset SoC, we need to pass the reset gpio parameter to
BL31.

TEST=execute `echo b > /proc/sysrq-trigger` to reboot system

Change-Id: I1a55216c0d5a00bbdb373d931bd50ebe7ca5694f
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54013
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
---
 src/mainboard/google/cherry/mainboard.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src/mainboard')

diff --git a/src/mainboard/google/cherry/mainboard.c b/src/mainboard/google/cherry/mainboard.c
index 5015531d9a..2607a2dfb4 100644
--- a/src/mainboard/google/cherry/mainboard.c
+++ b/src/mainboard/google/cherry/mainboard.c
@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <bl31.h>
 #include <bootmode.h>
 #include <console/console.h>
 #include <delay.h>
@@ -12,6 +13,10 @@
 #include <soc/regulator.h>
 #include <soc/usb.h>
 
+#include "gpio.h"
+
+#include <arm-trusted-firmware/include/export/plat/mediatek/common/plat_params_exp.h>
+
 DEFINE_BITFIELD(MSDC0_DRV, 29, 0)
 DEFINE_BITFIELD(MSDC1_DRV, 17, 0)
 DEFINE_BITFIELD(MSDC1_GPIO_MODE0_0, 26, 24)
@@ -31,6 +36,17 @@ enum {
 	MSDC1_GPIO_MODE1_BASE = 0x100053e0,
 };
 
+static void register_reset_to_bl31(void)
+{
+	static struct bl_aux_param_gpio param_reset = {
+		.h = { .type = BL_AUX_PARAM_MTK_RESET_GPIO },
+		.gpio = { .polarity = ARM_TF_GPIO_LEVEL_HIGH },
+	};
+
+	param_reset.gpio.index = GPIO_RESET.id;
+	register_bl31_aux_param(&param_reset.h);
+}
+
 static void configure_emmc(void)
 {
 	void *gpio_base = (void *)IOCFG_TL_BASE;
@@ -107,6 +123,8 @@ static void mainboard_init(struct device *dev)
 	configure_emmc();
 	configure_sdcard();
 	setup_usb_host();
+
+	register_reset_to_bl31();
 }
 
 static void mainboard_enable(struct device *dev)
-- 
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