xref: /openbmc/u-boot/arch/arm/lib/cache.c (revision b1881575)
1 /*
2  * (C) Copyright 2002
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23 
24 /* for now: just dummy functions to satisfy the linker */
25 
26 #include <common.h>
27 
28 void  flush_cache (unsigned long dummy1, unsigned long dummy2)
29 {
30 #if defined(CONFIG_OMAP2420) || defined(CONFIG_ARM1136)
31 	void arm1136_cache_flush(void);
32 
33 	arm1136_cache_flush();
34 #endif
35 #ifdef CONFIG_ARM926EJS
36 	/* test and clean, page 2-23 of arm926ejs manual */
37 	asm("0: mrc p15, 0, r15, c7, c10, 3\n\t" "bne 0b\n" : : : "memory");
38 	/* disable write buffer as well (page 2-22) */
39 	asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0));
40 #endif
41 #ifdef CONFIG_ARMV7
42 	void v7_flush_cache_all(void);
43 
44 	v7_flush_cache_all();
45 #endif
46 	return;
47 }
48