projects / people / ms / u-boot.git / blame
| 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 | ||
| 28 | #ifdef CONFIG_POST | |
| 29 | #if defined(CONFIG_440EP) || \ | |
| 30 | defined(CONFIG_440EPX) | |
| 31 | ||
| 32 | #include <ppc4xx.h> | |
| 33 | #include <asm/processor.h> | |
| 34 | ||
| 35 | ||
| 36 | int fpu_status(void) | |
| 37 | { | |
| 38 | if (mfspr(ccr0) & CCR0_DAPUIB) | |
| 39 | return 0; /* Disabled */ | |
| b4489621 | 40 | else |
| a11e0696 IL |
41 | return 1; /* Enabled */ |
| 42 | } | |
| 43 | ||
| 44 | ||
| 45 | void fpu_disable(void) | |
| 46 | { | |
| 47 | mtspr(ccr0, mfspr(ccr0) | CCR0_DAPUIB); | |
| 48 | mtmsr(mfmsr() & ~MSR_FP); | |
| 49 | } | |
| 50 | ||
| 51 | ||
| 52 | void fpu_enable(void) | |
| 53 | { | |
| 54 | mtspr(ccr0, mfspr(ccr0) & ~CCR0_DAPUIB); | |
| 55 | mtmsr(mfmsr() | MSR_FP); | |
| 56 | } | |
| b4489621 | 57 | |
| a11e0696 | 58 | #endif |
| b4489621 | 59 | #endif /* CONFIG_POST */ |