page.h 1.1 KB

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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. /* PAGE_SHIFT determines the page size */
  11. #if defined(CONFIG_ARC_PAGE_SIZE_16K)
  12. #define PAGE_SHIFT 14
  13. #elif defined(CONFIG_ARC_PAGE_SIZE_4K)
  14. #define PAGE_SHIFT 12
  15. #else
  16. /*
  17. * Default 8k
  18. * done this way (instead of under CONFIG_ARC_PAGE_SIZE_8K) because adhoc
  19. * user code (busybox appletlib.h) expects PAGE_SHIFT to be defined w/o
  20. * using the correct uClibc header and in their build our autoconf.h is
  21. * not available
  22. */
  23. #define PAGE_SHIFT 13
  24. #endif
  25. #ifdef __ASSEMBLY__
  26. #define PAGE_SIZE (1 << PAGE_SHIFT)
  27. #define PAGE_OFFSET (0x80000000)
  28. #else
  29. #define PAGE_SIZE (1UL << PAGE_SHIFT) /* Default 8K */
  30. #define PAGE_OFFSET (0x80000000UL) /* Kernel starts at 2G onwards */
  31. #endif
  32. #define PAGE_MASK (~(PAGE_SIZE-1))
  33. #endif /* _UAPI__ASM_ARC_PAGE_H */