18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 28c2ecf20Sopenharmony_ci#ifndef _PPC_BOOT_PAGE_H 38c2ecf20Sopenharmony_ci#define _PPC_BOOT_PAGE_H 48c2ecf20Sopenharmony_ci/* 58c2ecf20Sopenharmony_ci * Copyright (C) 2001 PPC64 Team, IBM Corp 68c2ecf20Sopenharmony_ci */ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#ifdef __ASSEMBLY__ 98c2ecf20Sopenharmony_ci#define ASM_CONST(x) x 108c2ecf20Sopenharmony_ci#else 118c2ecf20Sopenharmony_ci#define __ASM_CONST(x) x##UL 128c2ecf20Sopenharmony_ci#define ASM_CONST(x) __ASM_CONST(x) 138c2ecf20Sopenharmony_ci#endif 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci/* PAGE_SHIFT determines the page size */ 168c2ecf20Sopenharmony_ci#define PAGE_SHIFT 12 178c2ecf20Sopenharmony_ci#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) 188c2ecf20Sopenharmony_ci#define PAGE_MASK (~(PAGE_SIZE-1)) 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci/* align addr on a size boundary - adjust address up/down if needed */ 218c2ecf20Sopenharmony_ci#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((typeof(addr))(size)-1))) 228c2ecf20Sopenharmony_ci#define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1))) 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ci/* align addr on a size boundary - adjust address up if needed */ 258c2ecf20Sopenharmony_ci#define _ALIGN(addr,size) _ALIGN_UP(addr,size) 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci/* to align the pointer to the (next) page boundary */ 288c2ecf20Sopenharmony_ci#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci#endif /* _PPC_BOOT_PAGE_H */ 31