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https://github.com/ARM-software/arm-trusted-firmware.git
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36a8f8fd47
This patch implements PSCI_SYSTEM_RESET2 API as defined in PSCI v1.1 specification. The specification allows architectural and vendor-specific resets via this API. In the current specification, there is only one architectural reset, the warm reset. This reset is intended to provide a fast reboot path that guarantees not to reset system main memory. Change-Id: I057bb81a60cd0fe56465dbb5791d8e1cca025bd3 Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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* Copyright (c) 2014-2017, ARM Limited and Contributors. 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 <arch_helpers.h>
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#include <assert.h>
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#include <console.h>
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#include <debug.h>
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#include <platform.h>
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#include <stddef.h>
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#include "psci_private.h"
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void __dead2 psci_system_off(void)
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{
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psci_print_power_domain_map();
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assert(psci_plat_pm_ops->system_off);
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/* Notify the Secure Payload Dispatcher */
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if (psci_spd_pm && psci_spd_pm->svc_system_off) {
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psci_spd_pm->svc_system_off();
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}
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console_flush();
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/* Call the platform specific hook */
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psci_plat_pm_ops->system_off();
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/* This function does not return. We should never get here */
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}
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void __dead2 psci_system_reset(void)
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{
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psci_print_power_domain_map();
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assert(psci_plat_pm_ops->system_reset);
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/* Notify the Secure Payload Dispatcher */
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if (psci_spd_pm && psci_spd_pm->svc_system_reset) {
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psci_spd_pm->svc_system_reset();
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}
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console_flush();
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/* Call the platform specific hook */
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psci_plat_pm_ops->system_reset();
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/* This function does not return. We should never get here */
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}
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int psci_system_reset2(uint32_t reset_type, u_register_t cookie)
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{
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int is_vendor;
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psci_print_power_domain_map();
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assert(psci_plat_pm_ops->system_reset2);
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is_vendor = (reset_type >> PSCI_RESET2_TYPE_VENDOR_SHIFT) & 1;
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if (!is_vendor) {
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/*
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* Only WARM_RESET is allowed for architectural type resets.
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*/
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if (reset_type != PSCI_RESET2_SYSTEM_WARM_RESET)
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return PSCI_E_INVALID_PARAMS;
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if (psci_plat_pm_ops->write_mem_protect &&
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psci_plat_pm_ops->write_mem_protect(0) < 0) {
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return PSCI_E_NOT_SUPPORTED;
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}
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}
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/* Notify the Secure Payload Dispatcher */
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if (psci_spd_pm && psci_spd_pm->svc_system_reset) {
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psci_spd_pm->svc_system_reset();
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}
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console_flush();
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return psci_plat_pm_ops->system_reset2(is_vendor, reset_type, cookie);
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}
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