mirror of https://gitee.com/openkylin/linux.git
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
#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 */
|