arch/h8300/mm/memory.c

   1 /*
   2  *  linux/arch/h8300/mm/memory.c
   3  *
   4  *  Copyright (C) 2002  Yoshinori Sato <ysato@users.sourceforge.jp>,
   5  *
   6  *  Based on:
   7  *
   8  *  linux/arch/m68knommu/mm/memory.c
   9  *
  10  *  Copyright (C) 1998  Kenneth Albanowski <kjahds@kjahds.com>,
  11  *  Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
  12  *
  13  *  Based on:
  14  *
  15  *  linux/arch/m68k/mm/memory.c
  16  *
  17  *  Copyright (C) 1995  Hamish Macdonald
  18  */
  19
  20 #include <linux/config.h>
  21 #include <linux/mm.h>
  22 #include <linux/kernel.h>
  23 #include <linux/string.h>
  24 #include <linux/types.h>
  25 #include <linux/slab.h>
  26
  27 #include <asm/setup.h>
  28 #include <asm/segment.h>
  29 #include <asm/page.h>
  30 #include <asm/pgtable.h>
  31 #include <asm/system.h>
  32 #include <asm/traps.h>
  33 #include <asm/io.h>
  34
  35 void cache_clear (unsigned long paddr, int len)
  36 {
  37 }
  38
  39
  40 void cache_push (unsigned long paddr, int len)
  41 {
  42 }
  43
  44 void cache_push_v (unsigned long vaddr, int len)
  45 {
  46 }
  47
  48 /* Map some physical address range into the kernel address space. The
  49  * code is copied and adapted from map_chunk().
  50  */
  51
  52 unsigned long kernel_map(unsigned long paddr, unsigned long size,
  53                          int nocacheflag, unsigned long *memavailp )
  54 {
  55         return paddr;
  56 }
  57
  58 #ifdef MAGIC_ROM_PTR
  59
  60 int is_in_rom(unsigned long addr)
  61 {
  62         /* Anything not in operational RAM is returned as in rom! */
  63         if (addr < _ramstart || addr >= _ramend)
  64                 return 1;
  65         else
  66                 return 0;
  67 }
  68
  69 #endif
  70