memory.h 1011 B

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  1. /*
  2. * linux/include/asm-arm/arch-shark/memory.h
  3. *
  4. * by Alexander Schulz
  5. *
  6. * derived from:
  7. * linux/include/asm-arm/arch-ebsa110/memory.h
  8. * Copyright (c) 1996-1999 Russell King.
  9. */
  10. #ifndef __ASM_ARCH_MEMORY_H
  11. #define __ASM_ARCH_MEMORY_H
  12. #include <asm/sizes.h>
  13. /*
  14. * Physical DRAM offset.
  15. */
  16. #define PHYS_OFFSET UL(0x08000000)
  17. #ifndef __ASSEMBLY__
  18. static inline void __arch_adjust_zones(int node, unsigned long *zone_size, unsigned long *zhole_size)
  19. {
  20. if (node != 0) return;
  21. /* Only the first 4 MB (=1024 Pages) are usable for DMA */
  22. zone_size[1] = zone_size[0] - 1024;
  23. zone_size[0] = 1024;
  24. zhole_size[1] = zhole_size[0];
  25. zhole_size[0] = 0;
  26. }
  27. #define arch_adjust_zones(node, size, holes) \
  28. __arch_adjust_zones(node, size, holes)
  29. #define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_4M - 1)
  30. #endif
  31. #define __virt_to_bus(x) __virt_to_phys(x)
  32. #define __bus_to_virt(x) __phys_to_virt(x)
  33. /*
  34. * Cache flushing area
  35. */
  36. #define FLUSH_BASE_PHYS 0x80000000
  37. #define FLUSH_BASE 0xdf000000
  38. #endif