blob: 27e9ed01afc86bc29efe5d7fdd25023e191a56e6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/*
* (C) Copyright 2007
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Author: Sergei Poselenov <sposelenov@emcraft.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#ifdef CONFIG_POST
#if defined(CONFIG_440EP) || \
defined(CONFIG_440EPX)
#include <ppc4xx.h>
#include <asm/processor.h>
int fpu_status(void)
{
if (mfspr(ccr0) & CCR0_DAPUIB)
return 0; /* Disabled */
else
return 1; /* Enabled */
}
void fpu_disable(void)
{
mtspr(ccr0, mfspr(ccr0) | CCR0_DAPUIB);
mtmsr(mfmsr() & ~MSR_FP);
}
void fpu_enable(void)
{
mtspr(ccr0, mfspr(ccr0) & ~CCR0_DAPUIB);
mtmsr(mfmsr() | MSR_FP);
}
#endif
#endif /* CONFIG_POST */
|
