tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle
7 * Copyright (C) 2000, 2002 Maciej W. Rozycki
8 * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
9 */
10#ifndef _ASM_MACH_IP22_SPACES_H
11#define _ASM_MACH_IP22_SPACES_H
12
13
14#ifdef CONFIG_32BIT
15
16#define CAC_BASE 0x80000000
17#define IO_BASE 0xa0000000
18#define UNCAC_BASE 0xa0000000
19#define MAP_BASE 0xc0000000
20
21/*
22 * This handles the memory map.
23 * We handle pages at KSEG0 for kernels with 32 bit address space.
24 */
25#define PAGE_OFFSET 0x80000000UL
26
27/*
28 * Memory above this physical address will be considered highmem.
29 */
30#ifndef HIGHMEM_START
31#define HIGHMEM_START 0x20000000UL
32#endif
33
34#endif /* CONFIG_32BIT */
35
36#ifdef CONFIG_64BIT
37#define PAGE_OFFSET 0xffffffff80000000UL
38
39#ifndef HIGHMEM_START
40#define HIGHMEM_START (1UL << 59UL)
41#endif
42
43#define CAC_BASE 0xffffffff80000000
44#define IO_BASE 0xffffffffa0000000
45#define UNCAC_BASE 0xffffffffa0000000
46#define MAP_BASE 0xc000000000000000
47
48#define TO_PHYS(x) ( ((x) & TO_PHYS_MASK))
49#define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK))
50#define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK))
51
52#endif /* CONFIG_64BIT */
53
54#endif /* __ASM_MACH_IP22_SPACES_H */