3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Author: Sergei Poselenov <sposelenov@emcraft.com>
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #if defined(CONFIG_440EP) || \
30 defined(CONFIG_440EPX)
32 #include <asm/processor.h>
38 if (mfspr(ccr0) & CCR0_DAPUIB)
39 return 0; /* Disabled */
41 return 1; /* Enabled */
45 void fpu_disable(void)
47 mtspr(ccr0, mfspr(ccr0) | CCR0_DAPUIB);
48 mtmsr(mfmsr() & ~MSR_FP);
54 mtspr(ccr0, mfspr(ccr0) & ~CCR0_DAPUIB);
55 mtmsr(mfmsr() | MSR_FP);
59 #endif /* CONFIG_POST */