41 lines
830 B
C
41 lines
830 B
C
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/*
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* Copyright (C) 2012-2013 Apple Computer, Inc. All rights reserved.
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*
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* This document is the property of Apple Computer, Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Computer, Inc.
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*/
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#include <arch.h>
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#include <arch/arm/arm.h>
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#include <debug.h>
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#include <sys/task.h>
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/*
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* VFP/Neon support
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*/
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#if WITH_VFP
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extern uint32_t arm_read_cpacr();
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extern void arm_write_cpacr(uint32_t);
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void arm_fp_init(void)
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{
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uint32_t cpacr;
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/* v8: CPACR FPEN bits [21:20] needs to be programmed correctly to avoid a trap */
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cpacr = arm_read_cpacr();
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cpacr |= (3 << 20);
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arm_write_cpacr(cpacr);
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}
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bool arch_task_fp_enable(bool enable)
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{
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return true;
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}
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#endif /* WITH_VFP */
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