]>
Commit | Line | Data |
---|---|---|
a11e0696 | 1 | /* |
b4489621 SP |
2 | * (C) Copyright 2007 |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * Author: Sergei Poselenov <sposelenov@emcraft.com> | |
a11e0696 IL |
6 | * |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
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. | |
14 | * | |
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. | |
19 | * | |
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, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <config.h> | |
27 | ||
a11e0696 IL |
28 | #if defined(CONFIG_440EP) || \ |
29 | defined(CONFIG_440EPX) | |
30 | ||
a11e0696 | 31 | #include <asm/processor.h> |
ea9f6bce | 32 | #include <ppc4xx.h> |
a11e0696 IL |
33 | |
34 | ||
35 | int fpu_status(void) | |
36 | { | |
58ea142f | 37 | if (mfspr(SPRN_CCR0) & CCR0_DAPUIB) |
a11e0696 | 38 | return 0; /* Disabled */ |
4ef218f6 | 39 | else |
a11e0696 IL |
40 | return 1; /* Enabled */ |
41 | } | |
42 | ||
43 | ||
44 | void fpu_disable(void) | |
45 | { | |
58ea142f | 46 | mtspr(SPRN_CCR0, mfspr(SPRN_CCR0) | CCR0_DAPUIB); |
a11e0696 IL |
47 | mtmsr(mfmsr() & ~MSR_FP); |
48 | } | |
49 | ||
50 | ||
51 | void fpu_enable(void) | |
52 | { | |
58ea142f | 53 | mtspr(SPRN_CCR0, mfspr(SPRN_CCR0) & ~CCR0_DAPUIB); |
a11e0696 IL |
54 | mtmsr(mfmsr() | MSR_FP); |
55 | } | |
b4489621 | 56 | |
a11e0696 | 57 | #endif |