release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-shark/include/mach/memory.h

   1 /*
   2  * arch/arm/mach-shark/include/mach/memory.h
   3  *
   4  * by Alexander Schulz
   5  *
   6  * derived from:
   7  * arch/arm/mach-ebsa110/include/mach/memory.h
   8  * Copyright (c) 1996-1999 Russell King.
   9  */
  10 #ifndef __ASM_ARCH_MEMORY_H
  11 #define __ASM_ARCH_MEMORY_H
  12
  13 #include <asm/sizes.h>
  14
  15 /*
  16  * Physical DRAM offset.
  17  */
  18 #define PHYS_OFFSET     UL(0x08000000)
  19
  20 #ifndef __ASSEMBLY__
  21
  22 static inline void __arch_adjust_zones(unsigned long *zone_size, unsigned long *zhole_size)
  23 {
  24   /* Only the first 4 MB (=1024 Pages) are usable for DMA */
  25   /* See dev / -> .properties in OpenFirmware. */
  26   zone_size[1] = zone_size[0] - 1024;
  27   zone_size[0] = 1024;
  28   zhole_size[1] = zhole_size[0];
  29   zhole_size[0] = 0;
  30 }
  31
  32 #define arch_adjust_zones(size, holes) \
  33         __arch_adjust_zones(size, holes)
  34
  35 #define ISA_DMA_THRESHOLD       (PHYS_OFFSET + SZ_4M - 1)
  36 #define MAX_DMA_ADDRESS         (PAGE_OFFSET + SZ_4M)
  37
  38 #endif
  39
  40 /*
  41  * Cache flushing area
  42  */
  43 #define FLUSH_BASE_PHYS         0x80000000
  44 #define FLUSH_BASE              0xdf000000
  45
  46 #endif