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(int node, unsigned long *zone_size, unsigned long *zhole_size)
  23 {
  24   if (node != 0) return;
  25   /* Only the first 4 MB (=1024 Pages) are usable for DMA */
  26   /* See dev / -> .properties in OpenFirmware. */
  27   zone_size[1] = zone_size[0] - 1024;
  28   zone_size[0] = 1024;
  29   zhole_size[1] = zhole_size[0];
  30   zhole_size[0] = 0;
  31 }
  32
  33 #define arch_adjust_zones(node, size, holes) \
  34         __arch_adjust_zones(node, size, holes)
  35
  36 #define ISA_DMA_THRESHOLD       (PHYS_OFFSET + SZ_4M - 1)
  37 #define MAX_DMA_ADDRESS         (PAGE_OFFSET + SZ_4M)
  38
  39 #endif
  40
  41 /*
  42  * Cache flushing area
  43  */
  44 #define FLUSH_BASE_PHYS         0x80000000
  45 #define FLUSH_BASE              0xdf000000
  46
  47 #endif