feat(mt8188): add reset and poweroff functions

- Add mtk_pm_system_reset_cros() for cros reset.
- Add mtk_pm_system_off_cros() for cros power-off.

TEST=build pass
BUG=b:236331724

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I4117f6080e282551b37a936a490ab7b37ac31827

plat/mediatek/lib/system_reset/reset_cros.c

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/gpio.h>
+#include <lib/mtk_init/mtk_init.h>
+#include <lib/pm/mtk_pm.h>
+#include <plat_params.h>
+#include <pmic.h>
+#include <rtc.h>
+
+static void __dead2 mtk_system_reset_cros(void)
+{
+	struct bl_aux_gpio_info *gpio_reset = plat_get_mtk_gpio_reset();
+
+	INFO("MTK System Reset\n");
+
+	gpio_set_value(gpio_reset->index, gpio_reset->polarity);
+
+	wfi();
+	ERROR("MTK System Reset: operation not handled.\n");
+	panic();
+}
+
+static void __dead2 mtk_system_off_cros(void)
+{
+	INFO("MTK System Off\n");
+
+	rtc_power_off_sequence();
+	pmic_power_off();
+
+	wfi();
+	ERROR("MTK System Off: operation not handled.\n");
+	panic();
+}
+
+static struct plat_pm_reset_ctrl lib_reset_ctrl = {
+	.system_off = mtk_system_off_cros,
+	.system_reset = mtk_system_reset_cros,
+	.system_reset2 = NULL,
+};
+
+static int lib_reset_ctrl_init(void)
+{
+	INFO("Reset init\n");
+
+	plat_pm_ops_setup_reset(&lib_reset_ctrl);
+
+	return 0;
+}
+MTK_ARCH_INIT(lib_reset_ctrl_init);

plat/mediatek/lib/system_reset/rules.mk

@@ -0,0 +1,14 @@
+#
+# Copyright (c) 2022, MediaTek Inc. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#
+
+LOCAL_DIR := $(call GET_LOCAL_DIR)
+
+MODULE := system_reset
+
+LOCAL_SRCS-y := ${LOCAL_DIR}/reset_cros.c
+
+$(eval $(call MAKE_MODULE,$(MODULE),$(LOCAL_SRCS-y),$(MTK_BL)))

plat/mediatek/mt8188/platform.mk

@@ -22,6 +22,7 @@ PLAT_INCLUDES := -I${MTK_PLAT}/common \
 MODULES-y += $(MTK_PLAT)/common
 MODULES-y += $(MTK_PLAT)/lib/mtk_init
 MODULES-y += $(MTK_PLAT)/lib/pm
+MODULES-y += $(MTK_PLAT)/lib/system_reset
 MODULES-y += $(MTK_PLAT)/drivers/cirq
 MODULES-y += $(MTK_PLAT)/drivers/dp
 MODULES-y += $(MTK_PLAT)/drivers/gic600