linux/arch/arc/include/uapi/asm/page.h
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   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#endif /* _UAPI__ASM_ARC_PAGE_H */
  37
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