72 lines
1.2 KiB
ArmAsm
72 lines
1.2 KiB
ArmAsm
/*
|
|
* Copyright (c) 2014 Wind River Systems, Inc.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief CPU power management
|
|
*
|
|
* CPU power management routines.
|
|
*/
|
|
|
|
#define _ASMLANGUAGE
|
|
|
|
#include <kernel_structs.h>
|
|
#include <offsets_short.h>
|
|
#include <toolchain.h>
|
|
#include <sections.h>
|
|
#include <arch/cpu.h>
|
|
|
|
GTEXT(k_cpu_idle)
|
|
GTEXT(k_cpu_atomic_idle)
|
|
GDATA(k_cpu_sleep_mode)
|
|
|
|
.balign 4
|
|
SECTION_VAR(BSS, k_cpu_sleep_mode)
|
|
.word 0
|
|
|
|
/*
|
|
* @brief Put the CPU in low-power mode
|
|
*
|
|
* This function always exits with interrupts unlocked.
|
|
*
|
|
* void nanCpuIdle(void)
|
|
*/
|
|
|
|
SECTION_FUNC(TEXT, k_cpu_idle)
|
|
|
|
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
|
|
push_s blink
|
|
jl _sys_k_event_logger_enter_sleep
|
|
pop_s blink
|
|
#endif
|
|
|
|
ld r1, [k_cpu_sleep_mode]
|
|
or r1, r1, (1 << 4) /* set IRQ-enabled bit */
|
|
sleep r1
|
|
j_s [blink]
|
|
nop
|
|
|
|
/*
|
|
* @brief Put the CPU in low-power mode, entered with IRQs locked
|
|
*
|
|
* This function exits with interrupts restored to <key>.
|
|
*
|
|
* void k_cpu_atomic_idle(unsigned int key)
|
|
*/
|
|
SECTION_FUNC(TEXT, k_cpu_atomic_idle)
|
|
|
|
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
|
|
push_s blink
|
|
jl _sys_k_event_logger_enter_sleep
|
|
pop_s blink
|
|
#endif
|
|
|
|
ld r1, [k_cpu_sleep_mode]
|
|
or r1, r1, (1 << 4) /* set IRQ-enabled bit */
|
|
sleep r1
|
|
j_s.d [blink]
|
|
seti r0
|