arch/arc/include/uapi/asm/page.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #ifndef _UAPI__ASM_ARC_PAGE_H
  11 #define _UAPI__ASM_ARC_PAGE_H
  12
  13 #include <linux/const.h>
  14
  15 /* PAGE_SHIFT determines the page size */
  16 #if defined(CONFIG_ARC_PAGE_SIZE_16K)
  17 #define PAGE_SHIFT 14
  18 #elif defined(CONFIG_ARC_PAGE_SIZE_4K)
  19 #define PAGE_SHIFT 12
  20 #else
  21 /*
  22  * Default 8k
  23  * done this way (instead of under CONFIG_ARC_PAGE_SIZE_8K) because adhoc
  24  * user code (busybox appletlib.h) expects PAGE_SHIFT to be defined w/o
  25  * using the correct uClibc header and in their build our autoconf.h is
  26  * not available
  27  */
  28 #define PAGE_SHIFT 13
  29 #endif
  30
  31 #define PAGE_SIZE       _BITUL(PAGE_SHIFT)      /* Default 8K */
  32 #define PAGE_OFFSET     _AC(0x80000000, UL)     /* Kernel starts at 2G onwrds */
  33
  34 #define PAGE_MASK       (~(PAGE_SIZE-1))
  35
  36
  37 #endif /* _UAPI__ASM_ARC_PAGE_H */