| #ifndef _PPC_BOOT_PAGE_H | |
| #define _PPC_BOOT_PAGE_H | |
| /* | |
| * Copyright (C) 2001 PPC64 Team, IBM Corp | |
| * | |
| * 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. | |
| */ | |
| #ifdef __ASSEMBLY__ | |
| #define ASM_CONST(x) x | |
| #else | |
| #define __ASM_CONST(x) x##UL | |
| #define ASM_CONST(x) __ASM_CONST(x) | |
| #endif | |
| /* PAGE_SHIFT determines the page size */ | |
| #define PAGE_SHIFT 12 | |
| #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) | |
| #define PAGE_MASK (~(PAGE_SIZE-1)) | |
| /* align addr on a size boundary - adjust address up/down if needed */ | |
| #define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((typeof(addr))(size)-1))) | |
| #define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1))) | |
| /* align addr on a size boundary - adjust address up if needed */ | |
| #define _ALIGN(addr,size) _ALIGN_UP(addr,size) | |
| /* to align the pointer to the (next) page boundary */ | |
| #define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) | |
| #endif /* _PPC_BOOT_PAGE_H */ |