arch/arm/mach-sa1100/include/mach/memory.h

   1 /*
   2  * arch/arm/mach-sa1100/include/mach/memory.h
   3  *
   4  * Copyright (C) 1999-2000 Nicolas Pitre <nico@fluxnic.net>
   5  */
   6
   7 #ifndef __ASM_ARCH_MEMORY_H
   8 #define __ASM_ARCH_MEMORY_H
   9
  10 #include <asm/sizes.h>
  11
  12 /*
  13  * Physical DRAM offset is 0xc0000000 on the SA1100
  14  */
  15 #define PLAT_PHYS_OFFSET        UL(0xc0000000)
  16
  17 #ifdef CONFIG_SA1111
  18 #define ARM_DMA_ZONE_SIZE       SZ_1M
  19 #endif
  20
  21 /*
  22  * Because of the wide memory address space between physical RAM banks on the
  23  * SA1100, it's much convenient to use Linux's SparseMEM support to implement
  24  * our memory map representation.  Assuming all memory nodes have equal access
  25  * characteristics, we then have generic discontiguous memory support.
  26  *
  27  * The sparsemem banks are matched with the physical memory bank addresses
  28  * which are incidentally the same as virtual addresses.
  29  *
  30  *      node 0:  0xc0000000 - 0xc7ffffff
  31  *      node 1:  0xc8000000 - 0xcfffffff
  32  *      node 2:  0xd0000000 - 0xd7ffffff
  33  *      node 3:  0xd8000000 - 0xdfffffff
  34  */
  35 #define MAX_PHYSMEM_BITS        32
  36 #define SECTION_SIZE_BITS       27
  37
  38 /*
  39  * Cache flushing area - SA1100 zero bank
  40  */
  41 #define FLUSH_BASE_PHYS         0xe0000000
  42 #define FLUSH_BASE              0xf5000000
  43 #define FLUSH_BASE_MINICACHE    0xf5100000
  44
  45 #endif