| /* |
| * Copyright (c) 2014 Wind River Systems, Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief CPU power management |
| * |
| * CPU power management routines. |
| */ |
| |
| #include <kernel_structs.h> |
| #include <offsets_short.h> |
| #include <toolchain.h> |
| #include <linker/sections.h> |
| #include <arch/cpu.h> |
| |
| GTEXT(z_arch_cpu_idle) |
| GTEXT(z_arch_cpu_atomic_idle) |
| GDATA(z_arc_cpu_sleep_mode) |
| |
| SECTION_VAR(BSS, z_arc_cpu_sleep_mode) |
| .balign 4 |
| .word 0 |
| |
| /* |
| * @brief Put the CPU in low-power mode |
| * |
| * This function always exits with interrupts unlocked. |
| * |
| * void nanCpuIdle(void) |
| */ |
| |
| SECTION_FUNC(TEXT, z_arch_cpu_idle) |
| |
| #ifdef CONFIG_TRACING |
| push_s blink |
| jl sys_trace_idle |
| pop_s blink |
| #endif |
| |
| ld r1, [z_arc_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 z_arch_cpu_atomic_idle(unsigned int key) |
| */ |
| SECTION_FUNC(TEXT, z_arch_cpu_atomic_idle) |
| |
| #ifdef CONFIG_TRACING |
| push_s blink |
| jl sys_trace_idle |
| pop_s blink |
| #endif |
| |
| ld r1, [z_arc_cpu_sleep_mode] |
| or r1, r1, (1 << 4) /* set IRQ-enabled bit */ |
| sleep r1 |
| j_s.d [blink] |
| seti r0 |
