[coreboot-gerrit] Change in coreboot[master]: google/kukui: Pass reset gpio parameter to BL31

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/31605 )

Change subject: google/kukui: Pass reset gpio parameter to BL31
......................................................................

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 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31605
Tested-by: build bot (Jenkins) 
Reviewed-by: Hung-Te Lin 
---
M src/mainboard/google/kukui/mainboard.c
1 file changed, 17 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Hung-Te Lin: Looks good to me, approved

diff --git a/src/mainboard/google/kukui/mainboard.c b/src/mainboard/google/kukui/mainboard.c
index f34be6f..7b00d94 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 @@
    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 @@
    configure_emmc();
    configure_usb();
    configure_audio();
+
+	register_reset_to_bl31();
 }

static void mainboard_enable(struct device *dev)