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/*
* (C) Copyright 2007
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Author: Sergei Poselenov <sposelenov@emcraft.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#if defined(CONFIG_440EP) || \
defined(CONFIG_440EPX)
#include <asm/processor.h>
#include <asm/ppc4xx.h>
int fpu_status(void)
{
if (mfspr(SPRN_CCR0) & CCR0_DAPUIB)
return 0; /* Disabled */
else
return 1; /* Enabled */
}
void fpu_disable(void)
{
mtspr(SPRN_CCR0, mfspr(SPRN_CCR0) | CCR0_DAPUIB);
mtmsr(mfmsr() & ~MSR_FP);
}
void fpu_enable(void)
{
mtspr(SPRN_CCR0, mfspr(SPRN_CCR0) & ~CCR0_DAPUIB);
mtmsr(mfmsr() | MSR_FP);
}
#endif
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