From 4d990ab1bb27a4e5b8d5cb0c817e69e4f5cae241 Mon Sep 17 00:00:00 2001
From: Tristan Shieh <tristan.shieh@mediatek.com>
Date: Mon, 25 Feb 2019 17:14:14 +0800
Subject: google/kukui: Pass reset gpio parameter to BL31

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

BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui and ATF(BL31) can get this parameter.

Change-Id: Iefa70dc0714a9283a79f97d475b07ac047f5f3b0
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31605
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
---
 src/mainboard/google/kukui/mainboard.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/mainboard')

diff --git a/src/mainboard/google/kukui/mainboard.c b/src/mainboard/google/kukui/mainboard.c
index f34be6f51e..7b00d94ba6 100644
--- a/src/mainboard/google/kukui/mainboard.c
+++ b/src/mainboard/google/kukui/mainboard.c
@@ -14,6 +14,7 @@
  */
 
 #include <assert.h>
+#include <bl31.h>
 #include <boardid.h>
 #include <bootmode.h>
 #include <cbfs.h>
@@ -30,8 +31,11 @@
 #include <soc/usb.h>
 #include <string.h>
 
+#include "gpio.h"
 #include "panel.h"
 
+#include <arm-trusted-firmware/include/export/plat/mediatek/common/plat_params_exp.h>
+
 static void configure_emmc(void)
 {
 	const gpio_t emmc_pin[] = {
@@ -172,6 +176,17 @@ static bool configure_display(void)
 	return true;
 }
 
+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 mainboard_init(struct device *dev)
 {
 	if (display_init_required()) {
@@ -186,6 +201,8 @@ static void mainboard_init(struct device *dev)
 	configure_emmc();
 	configure_usb();
 	configure_audio();
+
+	register_reset_to_bl31();
 }
 
 static void mainboard_enable(struct device *dev)
-- 
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