62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* Copyright (c) 2011-2015 Wind River Systems, Inc.
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* Copyright (c) 2017 Oticon A/S
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file CPU power management code for POSIX
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*
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* This module provides:
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*
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* An implementation of the architecture-specific
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* arch_cpu_idle() primitive required by the kernel idle loop component.
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* It can be called within an implementation of _pm_save_idle(),
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* which is provided for the kernel by the platform.
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*
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* An implementation of arch_cpu_atomic_idle(), which
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* atomically re-enables interrupts and enters low power mode.
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*
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* A weak stub for sys_arch_reboot(), which does nothing
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*/
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#include "posix_core.h"
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#include "posix_board_if.h"
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#include <zephyr/arch/posix/posix_soc_if.h>
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#include <zephyr/tracing/tracing.h>
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#if !defined(CONFIG_ARCH_HAS_CUSTOM_BUSY_WAIT)
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#error "The POSIX architecture needs a custom busy_wait implementation. \
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CONFIG_ARCH_HAS_CUSTOM_BUSY_WAIT must be selected"
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/* Each POSIX arch board (or SOC) must provide an implementation of
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* arch_busy_wait()
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*/
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#endif
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void arch_cpu_idle(void)
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{
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sys_trace_idle();
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posix_irq_full_unlock();
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posix_halt_cpu();
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}
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void arch_cpu_atomic_idle(unsigned int key)
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{
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sys_trace_idle();
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posix_atomic_halt_cpu(key);
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}
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#if defined(CONFIG_REBOOT)
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/**
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* @brief Stub for sys_arch_reboot
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*
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* Does nothing
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*/
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void __weak sys_arch_reboot(int type)
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{
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posix_print_warning("%s called with type %d. Exiting\n",
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__func__, type);
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posix_exit(1);
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}
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#endif /* CONFIG_REBOOT */
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