forked from Imagelibrary/rtems
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSBSPsARMZynq
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*
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* @brief This source file contains the implementation of
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* _CPU_SMP_Start_processor() for Xilinx Zynq 7000 devices.
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*/
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/*
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* Copyright (C) 2014 embedded brains GmbH & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rtems/score/cpu.h>
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#include <bsp/start.h>
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#include <rtems/score/assert.h>
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bool _CPU_SMP_Start_processor(uint32_t cpu_index)
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{
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volatile uint32_t* const kick_address = (uint32_t*) 0xfffffff0UL;
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_Assert(cpu_index == 1);
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/*
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* Enable the second CPU.
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*/
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_ARM_Data_synchronization_barrier();
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_ARM_Instruction_synchronization_barrier();
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*kick_address = (uint32_t) _start;
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_ARM_Data_synchronization_barrier();
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_ARM_Instruction_synchronization_barrier();
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_ARM_Send_event();
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return true;
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}
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