mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-21 03:54:34 +00:00
db5fe4f493
To allow for generic handling of a wakeup, this hook is no longer expected to call wfi itself. Update the name everywhere to reflect this expectation so that future platform implementers don't get misled. Change-Id: Ic33f0b6da74592ad6778fd802c2f0b85223af614 Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/*
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* Copyright (c) 2024, STMicroelectronics - All Rights Reserved
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <errno.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <drivers/arm/gic_common.h>
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#include <drivers/arm/gicv2.h>
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#include <drivers/st/stm32mp_reset.h>
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#include <lib/mmio.h>
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#include <lib/psci/psci.h>
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#include <plat/common/platform.h>
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#include <platform_def.h>
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static uintptr_t stm32_sec_entrypoint;
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static void stm32_cpu_standby(plat_local_state_t cpu_state)
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{
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}
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static int stm32_pwr_domain_on(u_register_t mpidr)
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{
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return PSCI_E_INTERN_FAIL;
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}
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static void stm32_pwr_domain_off(const psci_power_state_t *target_state)
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{
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/* Nothing to do */
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}
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static void stm32_pwr_domain_suspend(const psci_power_state_t *target_state)
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{
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/* Nothing to do, power domain is not disabled */
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}
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static void stm32_pwr_domain_on_finish(const psci_power_state_t *target_state)
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{
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}
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/*******************************************************************************
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* STM32MP2 handler called when a power domain has just been powered on after
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* having been suspended earlier. The target_state encodes the low power state
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* that each level has woken up from.
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******************************************************************************/
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static void stm32_pwr_domain_suspend_finish(const psci_power_state_t
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*target_state)
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{
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/* Nothing to do, power domain is not disabled */
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}
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static void __dead2 stm32_pwr_domain_pwr_down_wfi(const psci_power_state_t
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*target_state)
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{
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ERROR("stm32mp2 Power Down WFI: operation not handled.\n");
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panic();
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}
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static void __dead2 stm32_system_off(void)
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{
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ERROR("stm32mp2 System Off: operation not handled.\n");
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panic();
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}
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static void __dead2 stm32_system_reset(void)
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{
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stm32mp_system_reset();
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}
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static int stm32_validate_power_state(unsigned int power_state,
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psci_power_state_t *req_state)
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{
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return PSCI_E_INVALID_PARAMS;
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}
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static int stm32_validate_ns_entrypoint(uintptr_t entrypoint)
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{
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/* The non-secure entry point must be in DDR */
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if (entrypoint < STM32MP_DDR_BASE) {
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return PSCI_E_INVALID_ADDRESS;
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}
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return PSCI_E_SUCCESS;
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}
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static void stm32_get_sys_suspend_power_state(psci_power_state_t *req_state)
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{
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}
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/*******************************************************************************
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* Export the platform handlers. The ARM Standard platform layer will take care
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* of registering the handlers with PSCI.
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******************************************************************************/
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static const plat_psci_ops_t stm32_psci_ops = {
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.cpu_standby = stm32_cpu_standby,
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.pwr_domain_on = stm32_pwr_domain_on,
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.pwr_domain_off = stm32_pwr_domain_off,
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.pwr_domain_suspend = stm32_pwr_domain_suspend,
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.pwr_domain_on_finish = stm32_pwr_domain_on_finish,
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.pwr_domain_suspend_finish = stm32_pwr_domain_suspend_finish,
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.pwr_domain_pwr_down = stm32_pwr_domain_pwr_down_wfi,
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.system_off = stm32_system_off,
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.system_reset = stm32_system_reset,
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.validate_power_state = stm32_validate_power_state,
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.validate_ns_entrypoint = stm32_validate_ns_entrypoint,
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.get_sys_suspend_power_state = stm32_get_sys_suspend_power_state,
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};
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/*******************************************************************************
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* Export the platform specific power ops.
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******************************************************************************/
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int plat_setup_psci_ops(uintptr_t sec_entrypoint,
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const plat_psci_ops_t **psci_ops)
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{
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stm32_sec_entrypoint = sec_entrypoint;
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*psci_ops = &stm32_psci_ops;
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return 0;
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}
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