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/*
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* (C) Copyright 2007
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Author: Sergei Poselenov <sposelenov@emcraft.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <config.h>
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#ifdef CONFIG_POST
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#if defined(CONFIG_440EP) || \
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defined(CONFIG_440EPX)
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#include <asm/processor.h>
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#include <ppc4xx.h>
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int fpu_status(void)
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{
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if (mfspr(ccr0) & CCR0_DAPUIB)
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return 0; /* Disabled */
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else
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return 1; /* Enabled */
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}
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void fpu_disable(void)
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{
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mtspr(ccr0, mfspr(ccr0) | CCR0_DAPUIB);
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mtmsr(mfmsr() & ~MSR_FP);
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}
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void fpu_enable(void)
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{
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mtspr(ccr0, mfspr(ccr0) & ~CCR0_DAPUIB);
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mtmsr(mfmsr() | MSR_FP);
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}
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#endif
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#endif /* CONFIG_POST */
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