83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
// Copyright 2020-2021 Beken
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <rthw.h>
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#include <rtthread.h>
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RT_WEAK void machine_reset(void)
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{
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rt_kprintf("reboot system...\n");
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rt_hw_interrupt_disable();
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while(1);
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}
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RT_WEAK void machine_shutdown(void)
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{
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rt_kprintf("shutdown...\n");
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rt_hw_interrupt_disable();
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while(1);
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}
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void rtos_shutdown()
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{
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uint32_t level;
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rt_kprintf("shutdown...\n");
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level = rt_hw_interrupt_disable();
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machine_shutdown();
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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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#ifdef RT_USING_CPU_FFS
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/**
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* This function finds the first bit set (beginning with the least significant bit)
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* in value and return the index of that bit.
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*
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* Bits are numbered starting at 1 (the least significant bit). A return value of
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* zero from any of these functions means that the argument was zero.
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*
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* @return return the index of the first bit set. If value is 0, then this function
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* shall return 0.
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*/
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#if defined(__CC_ARM)
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int __rt_ffs(int value)
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{
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register uint32_t x;
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if (value == 0)
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return value;
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__asm
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{
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rsb x, value, #0
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and x, x, value
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clz x, x
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rsb x, x, #32
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}
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return x;
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}
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#elif defined(__GNUC__) || defined(__ICCARM__)
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int __rt_ffs(int value)
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{
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return __builtin_ffs(value);
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}
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#endif
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#endif
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