3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
7 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
9 * See file CREDITS for list of people who contributed to this
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.
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.
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,
34 #include <asm/system.h>
36 static void cache_flush(void);
38 int cleanup_before_linux (void)
41 * this function is called just before we call linux
42 * it prepares the processor for linux
44 * we turn off caches etc ...
47 disable_interrupts ();
49 /* ARM926E-S needs the protection unit enabled for the icache to have
50 * been enabled - left for possible later use
51 * should turn off the protection unit as well....
53 /* turn off I/D-cache */
63 static void cache_flush (void)
67 asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
68 asm ("mcr p15, 0, %0, c7, c6, 0": :"r" (i));