wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| 4 | * Marius Groeger <mgroeger@sysgo.de> |
| 5 | * |
| 6 | * (C) Copyright 2002 |
Detlev Zundel | f1b3f2b | 2009-05-13 10:54:10 +0200 | [diff] [blame] | 7 | * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 8 | * |
| 9 | * See file CREDITS for list of people who contributed to this |
| 10 | * project. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License as |
| 14 | * published by the Free Software Foundation; either version 2 of |
| 15 | * the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 25 | * MA 02111-1307 USA |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * CPU specific code |
| 30 | */ |
| 31 | |
| 32 | #include <common.h> |
| 33 | #include <command.h> |
Jean-Christophe PLAGNIOL-VILLARD | 9053b5a | 2009-04-05 13:02:43 +0200 | [diff] [blame] | 34 | #include <asm/system.h> |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 35 | |
Jean-Christophe PLAGNIOL-VILLARD | e6b5f1b | 2009-04-05 13:06:31 +0200 | [diff] [blame] | 36 | static void cache_flush(void); |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 37 | |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 38 | int cleanup_before_linux (void) |
| 39 | { |
| 40 | /* |
| 41 | * this function is called just before we call linux |
| 42 | * it prepares the processor for linux |
| 43 | * |
| 44 | * we turn off caches etc ... |
| 45 | */ |
| 46 | |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 47 | disable_interrupts (); |
| 48 | |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 49 | |
Jean-Christophe PLAGNIOL-VILLARD | e6b5f1b | 2009-04-05 13:06:31 +0200 | [diff] [blame] | 50 | /* turn off I/D-cache */ |
| 51 | icache_disable(); |
| 52 | dcache_disable(); |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 53 | /* flush I/D-cache */ |
Jean-Christophe PLAGNIOL-VILLARD | e6b5f1b | 2009-04-05 13:06:31 +0200 | [diff] [blame] | 54 | cache_flush(); |
Wolfgang Denk | adf20a1 | 2005-09-25 01:48:28 +0200 | [diff] [blame] | 55 | |
Jean-Christophe PLAGNIOL-VILLARD | e6b5f1b | 2009-04-05 13:06:31 +0200 | [diff] [blame] | 56 | return 0; |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 57 | } |
| 58 | |
Jean-Christophe PLAGNIOL-VILLARD | e6b5f1b | 2009-04-05 13:06:31 +0200 | [diff] [blame] | 59 | /* flush I/D-cache */ |
| 60 | static void cache_flush (void) |
Hugo Villeneuve | 82a8437 | 2008-07-10 10:46:33 -0400 | [diff] [blame] | 61 | { |
Jean-Christophe PLAGNIOL-VILLARD | e6b5f1b | 2009-04-05 13:06:31 +0200 | [diff] [blame] | 62 | unsigned long i = 0; |
Hugo Villeneuve | 82a8437 | 2008-07-10 10:46:33 -0400 | [diff] [blame] | 63 | |
Jean-Christophe PLAGNIOL-VILLARD | e6b5f1b | 2009-04-05 13:06:31 +0200 | [diff] [blame] | 64 | asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i)); |
wdenk | 7eaacc5 | 2003-08-29 22:00:43 +0000 | [diff] [blame] | 65 | } |