1/*
2 * linux/include/asm-arm/arch-cl7500/memory.h
3 *
4 * Copyright (c) 1996,1997,1998 Russell King.
5 *
6 * Changelog:
7 *  20-Oct-1996	RMK	Created
8 *  31-Dec-1997	RMK	Fixed definitions to reduce warnings
9 *  11-Jan-1998	RMK	Uninlined to reduce hits on cache
10 *  08-Feb-1998	RMK	Added __virt_to_bus and __bus_to_virt
11 *  21-Mar-1999	RMK	Renamed to memory.h
12 *		RMK	Added TASK_SIZE and PAGE_OFFSET
13 */
14#ifndef __ASM_ARCH_MMU_H
15#define __ASM_ARCH_MMU_H
16
17/*
18 * Task size: 3GB
19 */
20#define TASK_SIZE	(0xc0000000UL)
21#define TASK_SIZE_26	(0x04000000UL)
22
23/*
24 * This decides where the kernel will search for a free chunk of vm
25 * space during mmap's.
26 */
27#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
28
29/*
30 * Page offset: 3GB
31 */
32#define PAGE_OFFSET	(0xc0000000UL)
33#define PHYS_OFFSET	(0x10000000UL)
34
35#define __virt_to_phys__is_a_macro
36#define __virt_to_phys(vpage) ((vpage) - PAGE_OFFSET + PHYS_OFFSET)
37#define __phys_to_virt__is_a_macro
38#define __phys_to_virt(ppage) ((ppage) + PAGE_OFFSET - PHYS_OFFSET)
39
40/*
41 * These are exactly the same on the RiscPC as the
42 * physical memory view.
43 */
44#define __virt_to_bus__is_a_macro
45#define __virt_to_bus(x) __virt_to_phys(x)
46#define __bus_to_virt__is_a_macro
47#define __bus_to_virt(x) __phys_to_virt(x)
48
49#define PHYS_TO_NID(addr)	(0)
50
51#endif
52