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 */ 35