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

[Tristan Hsieh (Code Review)]

Tristan Hsieh has uploaded this change for review. ( 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 
---
M src/mainboard/google/kukui/mainboard.c
1 file changed, 21 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/05/31605/1

diff --git a/src/mainboard/google/kukui/mainboard.c b/src/mainboard/google/kukui/mainboard.c
index e1d8f5f..489762d 100644
--- a/src/mainboard/google/kukui/mainboard.c
+++ b/src/mainboard/google/kukui/mainboard.c
@@ -14,10 +14,13 @@
  */

#include <device/device.h>
+#include <soc/bl31_plat_params.h>
 #include <soc/gpio.h>
 #include <soc/mmu_operations.h>
 #include <soc/usb.h>

+#include "gpio.h"
+
 static void configure_emmc(void)
 {
    const gpio_t emmc_pin[] = {
@@ -37,10 +40,28 @@
    setup_usb_host();
 }

+static void register_reset_to_bl31(void)
+{
+	static struct bl31_gpio_param param_reset = {
+		.h = {
+			.type = PARAM_RESET,
+		},
+		.gpio = {
+			.polarity = BL31_GPIO_LEVEL_HIGH,
+			.direction = BL31_GPIO_DIR_OUT,
+		},
+	};
+
+	param_reset.gpio.index = GPIO_RESET.id;
+	register_bl31_param(&param_reset.h);
+}
+
 static void mainboard_init(struct device *dev)
 {
    configure_emmc();
    configure_usb();
+
+	register_reset_to_bl31();
 }

static void mainboard_enable(struct device *dev)