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