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d5f1309306
This patch adds support for SYSTEM_OFF and SYSTEM_RESET PSCI operations. A platform should export handlers to complete the requested operation. The FVP port exports fvp_system_off() and fvp_system_reset() as an example. If the SPD provides a power management hook for system off and system reset, then the SPD is notified about the corresponding operation so it can do some bookkeeping. The TSPD exports tspd_system_off() and tspd_system_reset() for that purpose. Versatile Express shutdown and reset methods have been removed from the FDT as new PSCI sys_poweroff and sys_reset services have been added. For those kernels that do not support yet these PSCI services (i.e. GICv3 kernel), the original dtsi files have been renamed to *-no_psci.dtsi. Fixes ARM-software/tf-issues#218 Change-Id: Ic8a3bf801db979099ab7029162af041c4e8330c8
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*
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* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stddef.h>
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#include <arch_helpers.h>
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#include <debug.h>
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#include <platform.h>
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#include "psci_private.h"
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void psci_system_off(void)
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{
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/* Check platform support */
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if (!psci_plat_pm_ops->system_off) {
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ERROR("Platform has not exported a PSCI System Off hook.\n");
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panic();
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}
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psci_print_affinity_map();
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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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/* 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 psci_system_reset(void)
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{
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/* Check platform support */
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if (!psci_plat_pm_ops->system_reset) {
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ERROR("Platform has not exported a PSCI System Reset hook.\n");
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panic();
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}
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psci_print_affinity_map();
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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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/* 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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