1. 根目录:
2. arch
3. arc
4. include
5. uapi
6. asm
7. page.h

/*
 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef _UAPI__ASM_ARC_PAGE_H
#define _UAPI__ASM_ARC_PAGE_H

/* PAGE_SHIFT determines the page size */
#if defined(CONFIG_ARC_PAGE_SIZE_16K)
#define PAGE_SHIFT 14
#elif defined(CONFIG_ARC_PAGE_SIZE_4K)
#define PAGE_SHIFT 12
#else
/*
 * Default 8k
 * done this way (instead of under CONFIG_ARC_PAGE_SIZE_8K) because adhoc
 * user code (busybox appletlib.h) expects PAGE_SHIFT to be defined w/o
 * using the correct uClibc header and in their build our autoconf.h is
 * not available
 */
#define PAGE_SHIFT 13
#endif

#ifdef __ASSEMBLY__
#define PAGE_SIZE	(1 << PAGE_SHIFT)
#define PAGE_OFFSET	(0x80000000)
#else
#define PAGE_SIZE	(1UL << PAGE_SHIFT)	/* Default 8K */
#define PAGE_OFFSET	(0x80000000UL)	/* Kernel starts at 2G onwards */
#endif

#define PAGE_MASK	(~(PAGE_SIZE-1))


#endif /* _UAPI__ASM_ARC_PAGE_H */