include/asm-arm/arch-lpc22xx/vmalloc.h

   1 /*
   2  *  linux/include/asm-arm/arch-lpc22xx/vmalloc.h
   3  *
   4  *  Copyright (C) 2000 Russell King.
   5  *  modified by Philips Semiconductors
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 /*
  23  * Just any arbitrary offset to the start of the vmalloc VM area: the
  24  * current 8MB value just means that there will be a 8MB "hole" after the
  25  * physical memory until the kernel virtual memory starts.  That means that
  26  * any out-of-bounds memory accesses will hopefully be caught.
  27  * The vmalloc() routines leaves a hole of 4kB between each vmalloced
  28  * area for the same reason. ;)
  29  */
  30 #define MAX_LPC22xx_SDRAM_SIZE (0x10000000)
  31
  32 #define VMALLOC_OFFSET    (8*1024*1024)
  33 #define VMALLOC_START     (((unsigned long)high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
  34 #define VMALLOC_VMADDR(x) ((unsigned long)(x))
  35 #define VMALLOC_END       (PAGE_OFFSET + MAX_LPC22xx_SDRAM_SIZE)