summaryrefslogtreecommitdiff
path: root/arch/arm/mach-realview/include/mach/memory.h
blob: 759ed10d74fe80422eb338c7ae3779cf5bd34567 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/*
 *  arch/arm/mach-realview/include/mach/memory.h
 *
 *  Copyright (C) 2003 ARM Limited
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H

/*
 * Physical DRAM offset.
 */
#ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
#define PHYS_OFFSET		UL(0x70000000)
#else
#define PHYS_OFFSET		UL(0x00000000)
#endif

/*
 * Virtual view <-> DMA view memory address translations
 * virt_to_bus: Used to translate the virtual address to an
 *              address suitable to be passed to set_dma_addr
 * bus_to_virt: Used to convert an address for DMA operations
 *              to an address that the kernel can use.
 */
#define __virt_to_bus(x)	((x) - PAGE_OFFSET)
#define __bus_to_virt(x)	((x) + PAGE_OFFSET)

#endif