| /* |
| * 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 <zephyr/arch/posix/posix_soc_if.h> |
| #include <zephyr/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 */ |