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- #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 */
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