| #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 */ |