10 files changed, 1093 insertions, 0 deletions

diff --git a/plat/mediatek/lib/mtk_init/mtk_init.c b/plat/mediatek/lib/mtk_init/mtk_init.c
new file mode 100644
index 0000000..2289659
--- /dev/null
+++ b/plat/mediatek/lib/mtk_init/mtk_init.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <lib/utils_def.h>
+#include <lib/mtk_init/mtk_init.h>
+
+INIT_CALL_TABLE(EXPAND_AS_EXTERN);
+extern struct initcall __MTK_PLAT_INITCALL_END__[];
+
+struct initcall *initcall_list[] = {
+	INIT_CALL_TABLE(EXPAND_AS_SYMBOL_ARR)
+	__MTK_PLAT_INITCALL_END__
+};
+
+void mtk_init_one_level(uint32_t level)
+{
+	const struct initcall *entry;
+	int error;
+
+	if (level >= MTK_INIT_LVL_MAX) {
+		ERROR("invalid level:%u\n", level);
+		panic();
+	}
+
+	INFO("init calling level:%u\n", level);
+	for (entry = initcall_list[level];
+	     (entry != NULL) && (entry < initcall_list[level + 1]);
+	     entry++) {
+		INFO("calling %s\n", entry->name);
+		error = entry->fn();
+		if (error != 0) {
+			ERROR("init %s fail, errno:%d\n", entry->name, error);
+		}
+	}
+}
diff --git a/plat/mediatek/lib/mtk_init/mtk_mmap_init.c b/plat/mediatek/lib/mtk_init/mtk_mmap_init.c
new file mode 100644
index 0000000..e3dada0
--- /dev/null
+++ b/plat/mediatek/lib/mtk_init/mtk_mmap_init.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <drivers/console.h>
+#include <lib/xlat_tables/xlat_tables_compat.h>
+#include <mtk_mmap_pool.h>
+
+IMPORT_SYM(uintptr_t, __MTK_MMAP_POINTER_POOL_START__, MTK_MMAP_POINTER_POOL_START);
+IMPORT_SYM(uintptr_t, __MTK_MMAP_POINTER_POOL_END_UNALIGNED__, MTK_MMAP_POINTER_POOL_END_UNALIGNED);
+IMPORT_SYM(uintptr_t, __RW_START__, RW_START);
+IMPORT_SYM(uintptr_t, __DATA_START__, DATA_START);
+
+#define MAP_MTK_SECTIONS MAP_REGION_FLAT(RW_START, \
+					 DATA_START - RW_START, \
+					 MT_MEMORY | MT_RO | MT_SECURE)
+
+
+static void print_mmap(const mmap_region_t *regions)
+{
+	while (regions->size != 0U) {
+		VERBOSE("Region: 0x%lx - 0x%lx has attributes 0x%x\n",
+			regions->base_va,
+			regions->base_va + regions->size,
+			regions->attr);
+		regions++;
+	}
+}
+
+void mtk_xlat_init(const mmap_region_t *bl_regions)
+{
+	struct mtk_mmap_descriptor *iter;
+	const mmap_region_t *regions = bl_regions;
+
+	print_mmap(regions);
+	mmap_add(bl_regions);
+	if (MTK_MMAP_POINTER_POOL_START != MTK_MMAP_POINTER_POOL_END_UNALIGNED) {
+		for (iter = (struct mtk_mmap_descriptor *)MTK_MMAP_POINTER_POOL_START;
+		     (char *)iter < (char *)MTK_MMAP_POINTER_POOL_END_UNALIGNED;
+		     iter++) {
+			regions = iter->mmap_ptr;
+			INFO("mmap_name: %s\n", iter->mmap_name);
+			INFO("mmap_size: 0x%x\n", iter->mmap_size);
+			print_mmap(regions);
+			mmap_add(regions);
+		}
+	}
+	init_xlat_tables();
+	enable_mmu_el3(0);
+}
diff --git a/plat/mediatek/lib/mtk_init/rules.mk b/plat/mediatek/lib/mtk_init/rules.mk
new file mode 100644
index 0000000..cc6ca95
--- /dev/null
+++ b/plat/mediatek/lib/mtk_init/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 := mtk_init
+
+LOCAL_SRCS-y := $(LOCAL_DIR)/mtk_init.c
+LOCAL_SRCS-y += $(LOCAL_DIR)/mtk_mmap_init.c
+
+$(eval $(call MAKE_MODULE,$(MODULE),$(LOCAL_SRCS-y),$(MTK_BL)))
diff --git a/plat/mediatek/lib/pm/armv8_2/pwr_ctrl.c b/plat/mediatek/lib/pm/armv8_2/pwr_ctrl.c
new file mode 100644
index 0000000..447234a
--- /dev/null
+++ b/plat/mediatek/lib/pm/armv8_2/pwr_ctrl.c
@@ -0,0 +1,543 @@
+/*
+ * Copyright (c) 2022, Mediatek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+
+#include <common/debug.h>
+#include <drivers/arm/gicv3.h>
+#include <lib/psci/psci.h>
+#include <lib/utils.h>
+#ifdef MTK_PUBEVENT_ENABLE
+#include <vendor_pubsub_events.h>
+#endif
+#include <plat/arm/common/plat_arm.h>
+#include <plat/common/platform.h>
+
+#include <dfd.h>
+#include <lib/mtk_init/mtk_init.h>
+#include <lib/pm/mtk_pm.h>
+#include <mt_gic_v3.h>
+#include <platform_def.h>
+
+#define IS_AFFLV_PUBEVENT(_pstate) \
+	((_pstate & (MT_CPUPM_PWR_DOMAIN_MCUSYS | MT_CPUPM_PWR_DOMAIN_CLUSTER)) != 0)
+
+#ifdef MTK_PUBEVENT_ENABLE
+#define MT_CPUPM_EVENT_PWR_ON(x) ({ \
+	PUBLISH_EVENT_ARG(mt_cpupm_publish_pwr_on, (const void *)(x)); })
+
+#define MT_CPUPM_EVENT_PWR_OFF(x) ({ \
+	PUBLISH_EVENT_ARG(mt_cpupm_publish_pwr_off, (const void *)(x)); })
+
+#define MT_CPUPM_EVENT_AFFLV_PWR_ON(x) ({ \
+	PUBLISH_EVENT_ARG(mt_cpupm_publish_afflv_pwr_on, (const void *)(x)); })
+
+#define MT_CPUPM_EVENT_AFFLV_PWR_OFF(x) ({ \
+	PUBLISH_EVENT_ARG(mt_cpupm_publish_afflv_pwr_off, (const void *)(x)); })
+
+#else
+#define MT_CPUPM_EVENT_PWR_ON(x) ({ (void)x; })
+#define MT_CPUPM_EVENT_PWR_OFF(x) ({ (void)x; })
+#define MT_CPUPM_EVENT_AFFLV_PWR_ON(x) ({ (void)x; })
+#define MT_CPUPM_EVENT_AFFLV_PWR_OFF(x) ({ (void)x; })
+#endif
+
+/*
+ * The cpu require to cluster power stattus
+ * [0] : The cpu require cluster power down
+ * [1] : The cpu require cluster power on
+ */
+#define coordinate_cluster(onoff) write_clusterpwrdn_el1(onoff)
+#define coordinate_cluster_pwron() coordinate_cluster(1)
+#define coordinate_cluster_pwroff() coordinate_cluster(0)
+
+/* defaultly disable all functions */
+#define MTK_CPUPM_FN_MASK_DEFAULT	(0)
+
+struct mtk_cpu_pwr_ctrl {
+	unsigned int fn_mask;
+	struct mtk_cpu_pm_ops *ops;
+	struct mtk_cpu_smp_ops *smp;
+};
+
+static struct mtk_cpu_pwr_ctrl mtk_cpu_pwr = {
+	.fn_mask = MTK_CPUPM_FN_MASK_DEFAULT,
+	.ops = NULL,
+};
+
+#define IS_CPUIDLE_FN_ENABLE(x)	((mtk_cpu_pwr.ops != NULL) && ((mtk_cpu_pwr.fn_mask & x) != 0))
+#define IS_CPUSMP_FN_ENABLE(x)	((mtk_cpu_pwr.smp != NULL) && ((mtk_cpu_pwr.fn_mask & x) != 0))
+
+/* per-cpu power state */
+static unsigned int armv8_2_power_state[PLATFORM_CORE_COUNT];
+
+#define armv8_2_get_pwr_stateid(cpu) psci_get_pstate_id(armv8_2_power_state[cpu])
+
+static unsigned int get_mediatek_pstate(unsigned int domain, unsigned int psci_state,
+					struct mtk_cpupm_pwrstate *state)
+{
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_CPUPM_GET_PWR_STATE)) {
+		return mtk_cpu_pwr.ops->get_pstate(domain, psci_state, state);
+	}
+
+	return 0;
+}
+
+unsigned int armv8_2_get_pwr_afflv(const psci_power_state_t *state_info)
+{
+	int i;
+
+	for (i = (int)PLAT_MAX_PWR_LVL; i >= (int)PSCI_CPU_PWR_LVL; i--) {
+		if (is_local_state_run(state_info->pwr_domain_state[i]) == 0) {
+			return (unsigned int) i;
+		}
+	}
+
+	return PSCI_INVALID_PWR_LVL;
+}
+
+/* MediaTek mcusys power on control interface */
+static void armv8_2_mcusys_pwr_on_common(const struct mtk_cpupm_pwrstate *state)
+{
+	gicv3_distif_init();
+	mt_gic_distif_restore();
+	gic_sgi_restore_all();
+
+	dfd_resume();
+
+	/* Add code here that behavior before system enter mcusys'on */
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_RESUME_MCUSYS)) {
+		mtk_cpu_pwr.ops->mcusys_resume(state);
+	}
+}
+
+/* MediaTek mcusys power down control interface */
+static void armv8_2_mcusys_pwr_dwn_common(const struct mtk_cpupm_pwrstate *state)
+{
+	mt_gic_distif_save();
+	gic_sgi_save_all();
+
+	/* Add code here that behaves before entering mcusys off */
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_SUSPEND_MCUSYS)) {
+		mtk_cpu_pwr.ops->mcusys_suspend(state);
+	}
+}
+
+/* MediaTek Cluster power on control interface */
+static void armv8_2_cluster_pwr_on_common(const struct mtk_cpupm_pwrstate *state)
+{
+	/* Add code here that behavior before system enter cluster'on */
+#if defined(MTK_CM_MGR) && !defined(MTK_FPGA_EARLY_PORTING)
+	/* init cpu stall counter */
+	init_cpu_stall_counter_all();
+#endif
+
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_RESUME_CLUSTER)) {
+		mtk_cpu_pwr.ops->cluster_resume(state);
+	}
+}
+
+/* MediaTek Cluster power down control interface */
+static void armv8_2_cluster_pwr_dwn_common(const struct mtk_cpupm_pwrstate *state)
+{
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_SUSPEND_CLUSTER)) {
+		mtk_cpu_pwr.ops->cluster_suspend(state);
+	}
+}
+
+/* MediaTek CPU power on control interface */
+static void armv8_2_cpu_pwr_on_common(const struct mtk_cpupm_pwrstate *state, unsigned int pstate)
+{
+	coordinate_cluster_pwron();
+
+	gicv3_rdistif_init(plat_my_core_pos());
+	gicv3_cpuif_enable(plat_my_core_pos());
+
+	/* If MCUSYS has been powered down then restore GIC redistributor for all CPUs. */
+	if (IS_PLAT_SYSTEM_RETENTION(state->pwr.afflv)) {
+		mt_gic_rdistif_restore_all();
+	} else {
+		mt_gic_rdistif_restore();
+	}
+}
+
+/* MediaTek CPU power down control interface */
+static void armv8_2_cpu_pwr_dwn_common(const struct mtk_cpupm_pwrstate *state, unsigned int pstate)
+{
+	if ((pstate & MT_CPUPM_PWR_DOMAIN_PERCORE_DSU) != 0) {
+		coordinate_cluster_pwroff();
+	}
+
+	mt_gic_rdistif_save();
+	gicv3_cpuif_disable(plat_my_core_pos());
+	gicv3_rdistif_off(plat_my_core_pos());
+}
+
+static void armv8_2_cpu_pwr_resume(const struct mtk_cpupm_pwrstate *state, unsigned int pstate)
+{
+	armv8_2_cpu_pwr_on_common(state, pstate);
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_RESUME_CORE)) {
+		mtk_cpu_pwr.ops->cpu_resume(state);
+	}
+}
+
+static void armv8_2_cpu_pwr_suspend(const struct mtk_cpupm_pwrstate *state, unsigned int pstate)
+{
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_SUSPEND_CORE)) {
+		mtk_cpu_pwr.ops->cpu_suspend(state);
+	}
+	armv8_2_cpu_pwr_dwn_common(state, pstate);
+}
+
+static void armv8_2_cpu_pwr_on(const struct mtk_cpupm_pwrstate *state, unsigned int pstate)
+{
+	armv8_2_cpu_pwr_on_common(state, pstate);
+
+	if (IS_CPUSMP_FN_ENABLE(MTK_CPUPM_FN_SMP_CORE_ON)) {
+		mtk_cpu_pwr.smp->cpu_on(state);
+	}
+}
+
+static void armv8_2_cpu_pwr_off(const struct mtk_cpupm_pwrstate *state, unsigned int pstate)
+{
+	if (IS_CPUSMP_FN_ENABLE(MTK_CPUPM_FN_SMP_CORE_OFF)) {
+		mtk_cpu_pwr.smp->cpu_off(state);
+	}
+	armv8_2_cpu_pwr_dwn_common(state, pstate);
+}
+
+/* MediaTek PSCI power domain */
+static int armv8_2_power_domain_on(u_register_t mpidr)
+{
+	int ret = PSCI_E_SUCCESS;
+	int cpu = plat_core_pos_by_mpidr(mpidr);
+	uintptr_t entry = plat_pm_get_warm_entry();
+
+	if (IS_CPUSMP_FN_ENABLE(MTK_CPUPM_FN_PWR_ON_CORE_PREPARE)) {
+		if (mtk_cpu_pwr.smp->cpu_pwr_on_prepare(cpu, entry) != 0) {
+			ret = PSCI_E_DENIED;
+		}
+	}
+	INFO("CPU %u power domain prepare on\n", cpu);
+	return ret;
+}
+
+/* MediaTek PSCI power domain */
+static void armv8_2_power_domain_on_finish(const psci_power_state_t *state)
+{
+	struct mt_cpupm_event_data nb;
+	unsigned int pstate = (MT_CPUPM_PWR_DOMAIN_CORE | MT_CPUPM_PWR_DOMAIN_PERCORE_DSU);
+	struct mtk_cpupm_pwrstate pm_state = {
+		.info = {
+			.cpuid = plat_my_core_pos(),
+			.mode = MTK_CPU_PM_SMP,
+		},
+		.pwr = {
+			.afflv = armv8_2_get_pwr_afflv(state),
+			.state_id = 0x0,
+		},
+	};
+
+	armv8_2_cpu_pwr_on(&pm_state, pstate);
+
+	nb.cpuid = pm_state.info.cpuid;
+	nb.pwr_domain = pstate;
+	MT_CPUPM_EVENT_PWR_ON(&nb);
+
+	INFO("CPU %u power domain on finished\n", pm_state.info.cpuid);
+}
+
+/* MediaTek PSCI power domain */
+static void armv8_2_power_domain_off(const psci_power_state_t *state)
+{
+	struct mt_cpupm_event_data nb;
+	unsigned int pstate = (MT_CPUPM_PWR_DOMAIN_CORE | MT_CPUPM_PWR_DOMAIN_PERCORE_DSU);
+	struct mtk_cpupm_pwrstate pm_state = {
+		.info = {
+			.cpuid = plat_my_core_pos(),
+			.mode = MTK_CPU_PM_SMP,
+		},
+		.pwr = {
+			.afflv = armv8_2_get_pwr_afflv(state),
+			.state_id = 0x0,
+		},
+	};
+	armv8_2_cpu_pwr_off(&pm_state, pstate);
+
+	nb.cpuid = pm_state.info.cpuid;
+	nb.pwr_domain = pstate;
+	MT_CPUPM_EVENT_PWR_OFF(&nb);
+
+	INFO("CPU %u power domain off\n", pm_state.info.cpuid);
+}
+
+/* MediaTek PSCI power domain */
+static void armv8_2_power_domain_suspend(const psci_power_state_t *state)
+{
+	unsigned int pstate = 0;
+	struct mt_cpupm_event_data nb;
+	struct mtk_cpupm_pwrstate pm_state = {
+		.info = {
+			.cpuid = plat_my_core_pos(),
+			.mode = MTK_CPU_PM_CPUIDLE,
+		},
+	};
+
+	pm_state.pwr.state_id = armv8_2_get_pwr_stateid(pm_state.info.cpuid);
+	pm_state.pwr.afflv = armv8_2_get_pwr_afflv(state);
+	pm_state.pwr.raw = state;
+
+	pstate = get_mediatek_pstate(CPUPM_PWR_OFF,
+				     armv8_2_power_state[pm_state.info.cpuid], &pm_state);
+
+	armv8_2_cpu_pwr_suspend(&pm_state, pstate);
+
+	if ((pstate & MT_CPUPM_PWR_DOMAIN_CLUSTER) != 0) {
+		armv8_2_cluster_pwr_dwn_common(&pm_state);
+	}
+
+	if ((pstate & MT_CPUPM_PWR_DOMAIN_MCUSYS) != 0) {
+		armv8_2_mcusys_pwr_dwn_common(&pm_state);
+	}
+
+	nb.cpuid = pm_state.info.cpuid;
+	nb.pwr_domain = pstate;
+	MT_CPUPM_EVENT_PWR_OFF(&nb);
+
+	if (IS_AFFLV_PUBEVENT(pstate)) {
+		MT_CPUPM_EVENT_AFFLV_PWR_OFF(&nb);
+	}
+}
+
+/* MediaTek PSCI power domain */
+static void armv8_2_power_domain_suspend_finish(const psci_power_state_t *state)
+{
+	unsigned int pstate = 0;
+	struct mt_cpupm_event_data nb;
+	struct mtk_cpupm_pwrstate pm_state = {
+		.info = {
+			.cpuid = plat_my_core_pos(),
+			.mode = MTK_CPU_PM_CPUIDLE,
+		},
+	};
+
+	pm_state.pwr.state_id = armv8_2_get_pwr_stateid(pm_state.info.cpuid);
+	pm_state.pwr.afflv = armv8_2_get_pwr_afflv(state);
+	pm_state.pwr.raw = state;
+
+	pstate = get_mediatek_pstate(CPUPM_PWR_ON,
+				     armv8_2_power_state[pm_state.info.cpuid], &pm_state);
+
+	if ((pstate & MT_CPUPM_PWR_DOMAIN_MCUSYS) != 0) {
+		armv8_2_mcusys_pwr_on_common(&pm_state);
+	}
+
+	if ((pstate & MT_CPUPM_PWR_DOMAIN_CLUSTER) != 0) {
+		armv8_2_cluster_pwr_on_common(&pm_state);
+	}
+
+	armv8_2_cpu_pwr_resume(&pm_state, pstate);
+
+	nb.cpuid = pm_state.info.cpuid;
+	nb.pwr_domain = pstate;
+	MT_CPUPM_EVENT_PWR_ON(&nb);
+
+	if (IS_AFFLV_PUBEVENT(pstate)) {
+		MT_CPUPM_EVENT_AFFLV_PWR_ON(&nb);
+	}
+}
+
+/* MediaTek PSCI power domain */
+static int armv8_2_validate_power_state(unsigned int power_state, psci_power_state_t *req_state)
+{
+	unsigned int i;
+	unsigned int pstate = psci_get_pstate_type(power_state);
+	unsigned int aff_lvl = psci_get_pstate_pwrlvl(power_state);
+	unsigned int my_core_pos = plat_my_core_pos();
+
+	if (mtk_cpu_pwr.ops == NULL) {
+		return PSCI_E_INVALID_PARAMS;
+	}
+
+	if (IS_CPUIDLE_FN_ENABLE(MTK_CPUPM_FN_PWR_STATE_VALID)) {
+		if (mtk_cpu_pwr.ops->pwr_state_valid(aff_lvl, pstate) != 0) {
+			return PSCI_E_INVALID_PARAMS;
+		}
+	}
+
+	if (pstate == PSTATE_TYPE_STANDBY) {
+		req_state->pwr_domain_state[0] = PLAT_MAX_RET_STATE;
+	} else {
+		for (i = PSCI_CPU_PWR_LVL; i <= aff_lvl; i++) {
+			req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE;
+		}
+	}
+	armv8_2_power_state[my_core_pos] = power_state;
+
+	return PSCI_E_SUCCESS;
+}
+
+/* MediaTek PSCI power domain */
+#if CONFIG_MTK_SUPPORT_SYSTEM_SUSPEND
+static void armv8_2_get_sys_suspend_power_state(psci_power_state_t *req_state)
+{
+	unsigned int i;
+	int ret;
+	unsigned int power_state;
+	unsigned int my_core_pos = plat_my_core_pos();
+
+	ret = mtk_cpu_pwr.ops->pwr_state_valid(PLAT_MAX_PWR_LVL,
+						PSTATE_TYPE_POWERDOWN);
+
+	if (ret != MTK_CPUPM_E_OK) {
+		/* Avoid suspend due to platform is not ready. */
+		req_state->pwr_domain_state[PSCI_CPU_PWR_LVL] =
+						PLAT_MAX_RET_STATE;
+		for (i = PSCI_CPU_PWR_LVL + 1; i <= PLAT_MAX_PWR_LVL; i++) {
+			req_state->pwr_domain_state[i] = PSCI_LOCAL_STATE_RUN;
+		}
+
+		power_state = psci_make_powerstate(0, PSTATE_TYPE_STANDBY, PSCI_CPU_PWR_LVL);
+	} else {
+		for (i = PSCI_CPU_PWR_LVL; i <= PLAT_MAX_PWR_LVL; i++) {
+			req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE;
+		}
+
+		power_state = psci_make_powerstate(MT_PLAT_PWR_STATE_SUSPEND,
+						   PSTATE_TYPE_POWERDOWN, PLAT_MAX_PWR_LVL);
+	}
+
+	armv8_2_power_state[my_core_pos] = power_state;
+	flush_dcache_range((uintptr_t)&armv8_2_power_state[my_core_pos],
+			   sizeof(armv8_2_power_state[my_core_pos]));
+}
+#endif
+static void armv8_2_pm_smp_init(unsigned int cpu_id, uintptr_t entry_point)
+{
+	if (entry_point == 0) {
+		ERROR("%s, warm_entry_point is null\n", __func__);
+		panic();
+	}
+	if (IS_CPUSMP_FN_ENABLE(MTK_CPUPM_FN_SMP_INIT)) {
+		mtk_cpu_pwr.smp->init(cpu_id, entry_point);
+	}
+	INFO("[%s:%d] - Initialize finished\n", __func__, __LINE__);
+}
+
+static struct plat_pm_pwr_ctrl armv8_2_pwr_ops = {
+	.pwr_domain_suspend = armv8_2_power_domain_suspend,
+	.pwr_domain_suspend_finish = armv8_2_power_domain_suspend_finish,
+	.validate_power_state = armv8_2_validate_power_state,
+#if CONFIG_MTK_SUPPORT_SYSTEM_SUSPEND
+	.get_sys_suspend_power_state = armv8_2_get_sys_suspend_power_state,
+#endif
+};
+
+struct plat_pm_smp_ctrl armv8_2_smp_ops = {
+	.init = armv8_2_pm_smp_init,
+	.pwr_domain_on = armv8_2_power_domain_on,
+	.pwr_domain_off = armv8_2_power_domain_off,
+	.pwr_domain_on_finish = armv8_2_power_domain_on_finish,
+};
+
+#define ISSUE_CPU_PM_REG_FAIL(_success) ({ _success = false; assert(0); })
+
+#define CPM_PM_FN_CHECK(_fns, _ops, _id, _func, _result, _flag) ({ \
+	if ((_fns & _id)) { \
+		if (_ops->_func) \
+			_flag |= _id; \
+		else { \
+			ISSUE_CPU_PM_REG_FAIL(_result); \
+		} \
+	} })
+
+int register_cpu_pm_ops(unsigned int fn_flags, struct mtk_cpu_pm_ops *ops)
+{
+	bool success = true;
+	unsigned int fns = 0;
+
+	if ((ops == NULL) || (mtk_cpu_pwr.ops != NULL)) {
+		ERROR("[%s:%d] register cpu_pm fail !!\n", __FILE__, __LINE__);
+		return MTK_CPUPM_E_ERR;
+	}
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_RESUME_CORE,
+			cpu_resume, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_SUSPEND_CORE,
+			cpu_suspend, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_RESUME_CLUSTER,
+			cluster_resume, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_SUSPEND_CLUSTER,
+			cluster_suspend, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_RESUME_MCUSYS,
+			mcusys_resume, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_SUSPEND_MCUSYS,
+			mcusys_suspend, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_CPUPM_GET_PWR_STATE,
+			get_pstate, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_PWR_STATE_VALID,
+			pwr_state_valid, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_INIT,
+			init, success, fns);
+
+	if (success) {
+		mtk_cpu_pwr.ops = ops;
+		mtk_cpu_pwr.fn_mask |= fns;
+		plat_pm_ops_setup_pwr(&armv8_2_pwr_ops);
+		INFO("[%s:%d] CPU pwr ops register success, support:0x%x\n",
+		     __func__, __LINE__, fns);
+	} else {
+		ERROR("[%s:%d] register cpu_pm ops fail !, fn:0x%x\n",
+		      __func__, __LINE__, fn_flags);
+		assert(0);
+	}
+	return MTK_CPUPM_E_OK;
+}
+
+int register_cpu_smp_ops(unsigned int fn_flags, struct mtk_cpu_smp_ops *ops)
+{
+	bool success = true;
+	unsigned int fns = 0;
+
+	if ((ops == NULL) || (mtk_cpu_pwr.smp != NULL)) {
+		ERROR("[%s:%d] register cpu_smp fail !!\n", __FILE__, __LINE__);
+		return MTK_CPUPM_E_ERR;
+	}
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_SMP_INIT,
+			init, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_PWR_ON_CORE_PREPARE,
+			cpu_pwr_on_prepare, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_SMP_CORE_ON,
+			cpu_on, success, fns);
+
+	CPM_PM_FN_CHECK(fn_flags, ops, MTK_CPUPM_FN_SMP_CORE_OFF,
+			cpu_off, success, fns);
+
+	if (success == true) {
+		mtk_cpu_pwr.smp = ops;
+		mtk_cpu_pwr.fn_mask |= fns;
+		plat_pm_ops_setup_smp(&armv8_2_smp_ops);
+		INFO("[%s:%d] CPU smp ops register success, support:0x%x\n",
+		     __func__, __LINE__, fns);
+	} else {
+		ERROR("[%s:%d] register cpu_smp ops fail !, fn:0x%x\n",
+		      __func__, __LINE__, fn_flags);
+		assert(0);
+	}
+	return MTK_CPUPM_E_OK;
+}
diff --git a/plat/mediatek/lib/pm/armv8_2/rules.mk b/plat/mediatek/lib/pm/armv8_2/rules.mk
new file mode 100644
index 0000000..0e065c5
--- /dev/null
+++ b/plat/mediatek/lib/pm/armv8_2/rules.mk
@@ -0,0 +1,12 @@
+#
+# Copyright (c) 2022, MediaTek Inc. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+LOCAL_DIR := $(call GET_LOCAL_DIR)
+
+MODULE := armv${CONFIG_MTK_PM_ARCH}
+LOCAL_SRCS-y := ${LOCAL_DIR}/pwr_ctrl.c
+
+$(eval $(call MAKE_MODULE,$(MODULE),$(LOCAL_SRCS-y),$(MTK_BL)))
diff --git a/plat/mediatek/lib/pm/mtk_pm.c b/plat/mediatek/lib/pm/mtk_pm.c
new file mode 100644
index 0000000..3dbeb51
--- /dev/null
+++ b/plat/mediatek/lib/pm/mtk_pm.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <plat/common/platform.h>
+#include <lib/pm/mtk_pm.h>
+
+#define MTK_PM_ST_SMP_READY	BIT(0)
+#define MTK_PM_ST_PWR_READY	BIT(1)
+#define MTK_PM_ST_RESET_READY	BIT(2)
+
+static uintptr_t mtk_secure_entrypoint;
+static plat_init_func mtk_plat_smp_init;
+static plat_psci_ops_t mtk_pm_ops;
+static unsigned int mtk_pm_status;
+
+uintptr_t plat_pm_get_warm_entry(void)
+{
+	return mtk_secure_entrypoint;
+}
+
+int plat_pm_ops_setup_pwr(struct plat_pm_pwr_ctrl *ops)
+{
+	if (!ops) {
+		return MTK_CPUPM_E_FAIL;
+	}
+
+#if CONFIG_MTK_CPU_SUSPEND_EN
+	if (!mtk_pm_ops.pwr_domain_suspend) {
+		mtk_pm_ops.pwr_domain_suspend = ops->pwr_domain_suspend;
+	}
+
+	if (!mtk_pm_ops.pwr_domain_suspend_finish) {
+		mtk_pm_ops.pwr_domain_suspend_finish = ops->pwr_domain_suspend_finish;
+	}
+
+	if (!mtk_pm_ops.validate_power_state) {
+		mtk_pm_ops.validate_power_state = ops->validate_power_state;
+	}
+
+	if (!mtk_pm_ops.get_sys_suspend_power_state) {
+		mtk_pm_ops.get_sys_suspend_power_state = ops->get_sys_suspend_power_state;
+	}
+
+	mtk_pm_status |= MTK_PM_ST_PWR_READY;
+#endif
+	return MTK_CPUPM_E_OK;
+}
+
+int plat_pm_ops_setup_smp(struct plat_pm_smp_ctrl *ops)
+{
+	if (!ops) {
+		return MTK_CPUPM_E_FAIL;
+	}
+
+#if CONFIG_MTK_SMP_EN
+	if (!mtk_pm_ops.pwr_domain_on) {
+		mtk_pm_ops.pwr_domain_on = ops->pwr_domain_on;
+	}
+
+	if (!mtk_pm_ops.pwr_domain_on_finish) {
+		mtk_pm_ops.pwr_domain_on_finish = ops->pwr_domain_on_finish;
+	}
+
+	if (!mtk_pm_ops.pwr_domain_off) {
+		mtk_pm_ops.pwr_domain_off = ops->pwr_domain_off;
+	}
+
+	if (!mtk_plat_smp_init) {
+		mtk_plat_smp_init = ops->init;
+	}
+
+	mtk_pm_status |= MTK_PM_ST_SMP_READY;
+#endif
+	return MTK_CPUPM_E_OK;
+}
+
+int plat_pm_ops_setup_reset(struct plat_pm_reset_ctrl *ops)
+{
+	if (!ops) {
+		return MTK_CPUPM_E_FAIL;
+	}
+
+	if (!mtk_pm_ops.system_off) {
+		mtk_pm_ops.system_off = ops->system_off;
+	}
+
+	if (!mtk_pm_ops.system_reset) {
+		mtk_pm_ops.system_reset = ops->system_reset;
+	}
+
+	if (!mtk_pm_ops.system_reset2) {
+		mtk_pm_ops.system_reset2 = ops->system_reset2;
+	}
+
+	mtk_pm_status |= MTK_PM_ST_RESET_READY;
+
+	return MTK_CPUPM_E_OK;
+}
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	*psci_ops = &mtk_pm_ops;
+	mtk_secure_entrypoint = sec_entrypoint;
+
+	if (mtk_plat_smp_init) {
+		unsigned int cpu_id = plat_my_core_pos();
+
+		mtk_plat_smp_init(cpu_id, mtk_secure_entrypoint);
+	}
+	INFO("%s, smp:(%d), pwr_ctrl:(%d), system_reset:(%d)\n", __func__,
+	     !!(mtk_pm_status & MTK_PM_ST_SMP_READY),
+	     !!(mtk_pm_status & MTK_PM_ST_PWR_READY),
+	     !!(mtk_pm_status & MTK_PM_ST_RESET_READY));
+	return 0;
+}
diff --git a/plat/mediatek/lib/pm/mtk_pm.h b/plat/mediatek/lib/pm/mtk_pm.h
new file mode 100644
index 0000000..4a29439
--- /dev/null
+++ b/plat/mediatek/lib/pm/mtk_pm.h
@@ -0,0 +1,223 @@
+/*
+ * Copyright (c) 2022, Mediatek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MTK_PM_H
+#define MTK_PM_H
+#include <lib/psci/psci.h>
+
+#if MTK_PUBEVENT_ENABLE
+#include <vendor_pubsub_events.h>
+#endif
+
+#define MTK_CPUPM_E_OK			(0)
+#define MTK_CPUPM_E_UNKNOWN		(-1)
+#define MTK_CPUPM_E_ERR			(-2)
+#define MTK_CPUPM_E_FAIL		(-3)
+#define MTK_CPUPM_E_NOT_SUPPORT		(-4)
+
+
+#define MTK_CPUPM_FN_PWR_LOCK_AQUIRE		BIT(0)
+#define MTK_CPUPM_FN_INIT			BIT(1)
+#define MTK_CPUPM_FN_PWR_STATE_VALID		BIT(2)
+#define MTK_CPUPM_FN_PWR_ON_CORE_PREPARE	BIT(3)
+#define MTK_CPUPM_FN_SUSPEND_CORE		BIT(4)
+#define MTK_CPUPM_FN_RESUME_CORE		BIT(5)
+#define MTK_CPUPM_FN_SUSPEND_CLUSTER		BIT(6)
+#define MTK_CPUPM_FN_RESUME_CLUSTER		BIT(7)
+#define MTK_CPUPM_FN_SUSPEND_MCUSYS		BIT(8)
+#define MTK_CPUPM_FN_RESUME_MCUSYS		BIT(9)
+#define MTK_CPUPM_FN_CPUPM_GET_PWR_STATE	BIT(10)
+#define MTK_CPUPM_FN_SMP_INIT			BIT(11)
+#define MTK_CPUPM_FN_SMP_CORE_ON		BIT(12)
+#define MTK_CPUPM_FN_SMP_CORE_OFF		BIT(13)
+
+enum mtk_cpupm_pstate {
+	MTK_CPUPM_CORE_ON,
+	MTK_CPUPM_CORE_OFF,
+	MTK_CPUPM_CORE_SUSPEND,
+	MTK_CPUPM_CORE_RESUME,
+	MTK_CPUPM_CLUSTER_SUSPEND,
+	MTK_CPUPM_CLUSTER_RESUME,
+	MTK_CPUPM_MCUSYS_SUSPEND,
+	MTK_CPUPM_MCUSYS_RESUME,
+};
+
+enum mtk_cpu_pm_mode {
+	MTK_CPU_PM_CPUIDLE,
+	MTK_CPU_PM_SMP,
+};
+
+#define MT_IRQ_REMAIN_MAX	(32)
+#define MT_IRQ_REMAIN_CAT_LOG	BIT(31)
+
+struct mt_irqremain {
+	unsigned int count;
+	unsigned int irqs[MT_IRQ_REMAIN_MAX];
+	unsigned int wakeupsrc_cat[MT_IRQ_REMAIN_MAX];
+	unsigned int wakeupsrc[MT_IRQ_REMAIN_MAX];
+};
+
+typedef void (*plat_init_func)(unsigned int, uintptr_t);
+
+struct plat_pm_smp_ctrl {
+	plat_init_func init;
+	int (*pwr_domain_on)(u_register_t mpidr);
+	void (*pwr_domain_off)(const psci_power_state_t *target_state);
+	void (*pwr_domain_on_finish)(const psci_power_state_t *target_state);
+};
+
+struct plat_pm_pwr_ctrl {
+	void (*pwr_domain_suspend)(const psci_power_state_t *target_state);
+	void (*pwr_domain_on_finish_late)(const psci_power_state_t *target_state);
+	void (*pwr_domain_suspend_finish)(const psci_power_state_t *target_state);
+	int (*validate_power_state)(unsigned int power_state, psci_power_state_t *req_state);
+	void (*get_sys_suspend_power_state)(psci_power_state_t *req_state);
+};
+
+struct plat_pm_reset_ctrl {
+	__dead2 void (*system_off)();
+	__dead2 void (*system_reset)();
+	int (*system_reset2)(int is_vendor, int reset_type, u_register_t cookie);
+};
+
+struct mtk_cpu_pm_info {
+	unsigned int cpuid;
+	unsigned int mode;
+};
+
+struct mtk_cpu_pm_state {
+	unsigned int afflv;
+	unsigned int state_id;
+	const psci_power_state_t *raw;
+};
+
+struct mtk_cpupm_pwrstate {
+	struct mtk_cpu_pm_info info;
+	struct mtk_cpu_pm_state pwr;
+};
+
+struct mtk_cpu_smp_ops {
+	void (*init)(unsigned int cpu, uintptr_t sec_entrypoint);
+	int (*cpu_pwr_on_prepare)(unsigned int cpu, uintptr_t entry);
+	void (*cpu_on)(const struct mtk_cpupm_pwrstate *state);
+	void (*cpu_off)(const struct mtk_cpupm_pwrstate *state);
+	int (*invoke)(unsigned int funcID, void *priv);
+};
+
+#define MT_CPUPM_PWR_DOMAIN_CORE		BIT(0)
+#define MT_CPUPM_PWR_DOMAIN_PERCORE_DSU		BIT(1)
+#define MT_CPUPM_PWR_DOMAIN_PERCORE_DSU_MEM	BIT(2)
+#define MT_CPUPM_PWR_DOMAIN_CLUSTER		BIT(3)
+#define MT_CPUPM_PWR_DOMAIN_MCUSYS		BIT(4)
+#define MT_CPUPM_PWR_DOMAIN_SUSPEND		BIT(5)
+
+enum mt_cpupm_pwr_domain {
+	CPUPM_PWR_ON,
+	CPUPM_PWR_OFF,
+};
+
+typedef	unsigned int mtk_pstate_type;
+
+struct mtk_cpu_pm_ops {
+	void (*init)(unsigned int cpu, uintptr_t sec_entrypoint);
+	unsigned int (*get_pstate)(enum mt_cpupm_pwr_domain domain,
+				   const mtk_pstate_type psci_state,
+				   const struct mtk_cpupm_pwrstate *state);
+	int (*pwr_state_valid)(unsigned int afflv, unsigned int state);
+	void (*cpu_suspend)(const struct mtk_cpupm_pwrstate *state);
+	void (*cpu_resume)(const struct mtk_cpupm_pwrstate *state);
+	void (*cluster_suspend)(const struct mtk_cpupm_pwrstate *state);
+	void (*cluster_resume)(const struct mtk_cpupm_pwrstate *state);
+	void (*mcusys_suspend)(const struct mtk_cpupm_pwrstate *state);
+	void (*mcusys_resume)(const struct mtk_cpupm_pwrstate *state);
+	int (*invoke)(unsigned int funcID, void *priv);
+};
+
+int register_cpu_pm_ops(unsigned int fn_flags, struct mtk_cpu_pm_ops *ops);
+int register_cpu_smp_ops(unsigned int fn_flags, struct mtk_cpu_smp_ops *ops);
+
+struct mt_cpupm_event_data {
+	unsigned int cpuid;
+	unsigned int pwr_domain;
+};
+
+/* Extension event for platform driver */
+#if MTK_PUBEVENT_ENABLE
+/* [PUB_EVENT] Core power on */
+#define MT_CPUPM_SUBCRIBE_EVENT_PWR_ON(_fn) \
+	SUBSCRIBE_TO_EVENT(mt_cpupm_publish_pwr_on, _fn)
+
+/* [PUB_EVENT] Core power off */
+#define MT_CPUPM_SUBCRIBE_EVENT_PWR_OFF(_fn) \
+	SUBSCRIBE_TO_EVENT(mt_cpupm_publish_pwr_off, _fn)
+
+/* [PUB_EVENT] Cluster power on */
+#define MT_CPUPM_SUBCRIBE_CLUSTER_PWR_ON(_fn) \
+	SUBSCRIBE_TO_EVENT(mt_cpupm_publish_afflv_pwr_on, _fn)
+
+/* [PUB_EVENT] Cluster power off */
+#define MT_CPUPM_SUBCRIBE_CLUSTER_PWR_OFF(_fn) \
+	SUBSCRIBE_TO_EVENT(mt_cpupm_publish_afflv_pwr_off, _fn)
+
+/* [PUB_EVENT] Mcusys power on */
+#define MT_CPUPM_SUBCRIBE_MCUSYS_PWR_ON(_fn) \
+	SUBSCRIBE_TO_EVENT(mt_cpupm_publish_afflv_pwr_on, _fn)
+
+/* [PUB_EVENT] Mcusys power off */
+#define MT_CPUPM_SUBCRIBE_MCUSYS_PWR_OFF(_fn) \
+	SUBSCRIBE_TO_EVENT(mt_cpupm_publish_afflv_pwr_off, _fn)
+
+#else
+#define MT_CPUPM_SUBCRIBE_EVENT_PWR_ON(_fn)
+#define MT_CPUPM_SUBCRIBE_EVENT_PWR_OFF(_fn)
+#define MT_CPUPM_SUBCRIBE_CLUSTER_PWR_ON(_fn)
+#define MT_CPUPM_SUBCRIBE_CLUSTER_PWR_OFF(_fn)
+#define MT_CPUPM_SUBCRIBE_MCUSYS_PWR_ON(_fn)
+#define MT_CPUPM_SUBCRIBE_MCUSYS_PWR_OFF(_fn)
+#endif
+
+/*
+ * Definition c-state power domain.
+ * bit[7:4] (main state id):
+ *  - 1: Cluster.
+ *  - 2: Mcusys.
+ *  - 3: Memory.
+ *  - 4: System pll.
+ *  - 5: System bus.
+ *  - 6: SoC 26m/DCXO.
+ *  - 7: Vcore buck.
+ *  - 15: Suspend.
+ * bit[3:0] (reserved for state_id extension):
+ *  - 4: CPU buck.
+ */
+#define MT_PLAT_PWR_STATE_CLUSTER	(0x0010)
+#define MT_PLAT_PWR_STATE_MCUSYS	(0x0020)
+#define MT_PLAT_PWR_STATE_MCUSYS_BUCK	(0x0024)
+#define MT_PLAT_PWR_STATE_SYSTEM_MEM	(0x0030)
+#define MT_PLAT_PWR_STATE_SYSTEM_PLL	(0x0040)
+#define MT_PLAT_PWR_STATE_SYSTEM_BUS	(0x0050)
+#define MT_PLAT_PWR_STATE_SUSPEND	(0x00f0)
+
+#define IS_MT_PLAT_PWR_STATE(state, target_state)	((state & target_state) == target_state)
+#define IS_MT_PLAT_PWR_STATE_MCUSYS(state)  IS_MT_PLAT_PWR_STATE(state, MT_PLAT_PWR_STATE_MCUSYS)
+
+#define PLAT_MT_SYSTEM_SUSPEND		PLAT_MAX_OFF_STATE
+#define PLAT_MT_CPU_SUSPEND_CLUSTER	PLAT_MAX_RET_STATE
+#define PLAT_MT_CPU_SUSPEND_MCUSYS	PLAT_MAX_RET_STATE
+
+#define IS_PLAT_SYSTEM_SUSPEND(aff)	(aff == PLAT_MT_SYSTEM_SUSPEND)
+#define IS_PLAT_SYSTEM_RETENTION(aff)	(aff >= PLAT_MAX_RET_STATE)
+
+#define IS_PLAT_SUSPEND_ID(stateid)	(stateid == MT_PLAT_PWR_STATE_SUSPEND)
+
+#define IS_PLAT_MCUSYSOFF_AFFLV(afflv)	(afflv >= PLAT_MT_CPU_SUSPEND_MCUSYS)
+
+int plat_pm_ops_setup_pwr(struct plat_pm_pwr_ctrl *ops);
+int plat_pm_ops_setup_reset(struct plat_pm_reset_ctrl *ops);
+int plat_pm_ops_setup_smp(struct plat_pm_smp_ctrl *ops);
+uintptr_t plat_pm_get_warm_entry(void);
+
+#endif
diff --git a/plat/mediatek/lib/pm/rules.mk b/plat/mediatek/lib/pm/rules.mk
new file mode 100644
index 0000000..29265c4
--- /dev/null
+++ b/plat/mediatek/lib/pm/rules.mk
@@ -0,0 +1,17 @@
+#
+# Copyright (c) 2022, MediaTek Inc. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#
+
+LOCAL_DIR := $(call GET_LOCAL_DIR)
+
+MODULE := pm
+
+LOCAL_SRCS-y := ${LOCAL_DIR}/mtk_pm.c
+
+$(eval $(call MAKE_MODULE,$(MODULE),$(LOCAL_SRCS-y),$(MTK_BL)))
+
+SUB_RULES-$(CONFIG_MTK_PM_SUPPORT) := $(LOCAL_DIR)/armv${CONFIG_MTK_PM_ARCH}
+$(eval $(call INCLUDE_MAKEFILE,$(SUB_RULES-y)))
diff --git a/plat/mediatek/lib/system_reset/reset_cros.c b/plat/mediatek/lib/system_reset/reset_cros.c
new file mode 100644
index 0000000..40e68ba
--- /dev/null
+++ b/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);
diff --git a/plat/mediatek/lib/system_reset/rules.mk b/plat/mediatek/lib/system_reset/rules.mk
new file mode 100644
index 0000000..4f20663
--- /dev/null
+++ b/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)))