page.h 1018 B

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