1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2#ifndef _PPC_BOOT_PAGE_H 3#define _PPC_BOOT_PAGE_H 4/* 5 * Copyright (C) 2001 PPC64 Team, IBM Corp 6 */ 7 8#ifdef __ASSEMBLY__ 9#define ASM_CONST(x) x 10#else 11#define __ASM_CONST(x) x##UL 12#define ASM_CONST(x) __ASM_CONST(x) 13#endif 14 15/* PAGE_SHIFT determines the page size */ 16#define PAGE_SHIFT 12 17#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) 18#define PAGE_MASK (~(PAGE_SIZE-1)) 19 20/* align addr on a size boundary - adjust address up/down if needed */ 21#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((typeof(addr))(size)-1))) 22#define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1))) 23 24/* align addr on a size boundary - adjust address up if needed */ 25#define _ALIGN(addr,size) _ALIGN_UP(addr,size) 26 27/* to align the pointer to the (next) page boundary */ 28#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) 29 30#endif /* _PPC_BOOT_PAGE_H */ 31