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decd300b OH |
1 | #ifndef _PPC_BOOT_PAGE_H |
2 | #define _PPC_BOOT_PAGE_H | |
3 | /* | |
4 | * Copyright (C) 2001 PPC64 Team, IBM Corp | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #ifdef __ASSEMBLY__ | |
13 | #define ASM_CONST(x) x | |
14 | #else | |
15 | #define __ASM_CONST(x) x##UL | |
16 | #define ASM_CONST(x) __ASM_CONST(x) | |
17 | #endif | |
18 | ||
19 | /* PAGE_SHIFT determines the page size */ | |
20 | #define PAGE_SHIFT 12 | |
21 | #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) | |
22 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
23 | ||
24 | /* align addr on a size boundary - adjust address up/down if needed */ | |
25 | #define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1))) | |
26 | #define _ALIGN_DOWN(addr,size) ((addr)&(~((size)-1))) | |
27 | ||
28 | /* align addr on a size boundary - adjust address up if needed */ | |
29 | #define _ALIGN(addr,size) _ALIGN_UP(addr,size) | |
30 | ||
31 | /* to align the pointer to the (next) page boundary */ | |
32 | #define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) | |
33 | ||
34 | #endif /* _PPC_BOOT_PAGE_H */ |