forked from Imagelibrary/rtems
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/**
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* @file
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*
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* @brief ARM7M CPU Initialize
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*/
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/*
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* Copyright (c) 2011 Sebastian Huber. All rights reserved.
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*
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* embedded brains GmbH
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* Obere Lagerstr. 30
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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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.rtems.org/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/score/armv7m.h>
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#ifdef ARM_MULTILIB_ARCH_V7M
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void _CPU_Initialize( void )
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{
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/*
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* The exception handler used to carry out the thead dispatching must have
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* the lowest priority possible. No other exception handlers must have this
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* priority if they use services that may lead to a thread dispatch. See
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* also "ARMv7-M Architecture Reference Manual, Issue D" section B1.5.4
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* "Exception priorities and preemption".
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*/
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_ARMV7M_Set_exception_priority_and_handler(
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ARMV7M_VECTOR_SVC,
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ARMV7M_EXCEPTION_PRIORITY_LOWEST,
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_ARMV7M_Supervisor_call
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);
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_ARMV7M_Set_exception_priority_and_handler(
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ARMV7M_VECTOR_PENDSV,
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ARMV7M_EXCEPTION_PRIORITY_LOWEST,
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_ARMV7M_Pendable_service_call
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);
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}
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#endif /* ARM_MULTILIB_ARCH_V7M */
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