52 lines
922 B
C
52 lines
922 B
C
/*
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* File : cpu.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2011-09-15 Bernard first version
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* 2018-11-22 Jesven add rt_hw_cpu_id()
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <board.h>
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#ifdef RT_USING_SMP
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int rt_hw_cpu_id(void)
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{
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int cpu_id;
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__asm__ volatile (
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"mrc p15, 0, %0, c0, c0, 5"
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:"=r"(cpu_id)
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);
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cpu_id &= 0xf;
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return cpu_id;
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};
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#endif
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/**
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* @addtogroup ARM CPU
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*/
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/*@{*/
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/** shutdown CPU */
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void rt_hw_cpu_shutdown()
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{
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rt_uint32_t level;
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rt_kprintf("shutdown...\n");
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level = rt_hw_interrupt_disable();
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while (level)
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{
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RT_ASSERT(0);
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}
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}
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/*@}*/
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