arch/m68k/include/asm/coldfire.h

   1 /****************************************************************************/
   2
   3 /*
   4  *      coldfire.h -- Motorola ColdFire CPU sepecific defines
   5  *
   6  *      (C) Copyright 1999-2006, Greg Ungerer (gerg@snapgear.com)
   7  *      (C) Copyright 2000, Lineo (www.lineo.com)
   8  */
   9
  10 /****************************************************************************/
  11 #ifndef coldfire_h
  12 #define coldfire_h
  13 /****************************************************************************/
  14
  15
  16 /*
  17  *      Define master clock frequency. This is essentially done at config
  18  *      time now. No point enumerating dozens of possible clock options
  19  *      here. Also the peripheral clock (bus clock) divide ratio is set
  20  *      at config time too.
  21  */
  22 #ifdef CONFIG_CLOCK_SET
  23 #define MCF_CLK         CONFIG_CLOCK_FREQ
  24 #define MCF_BUSCLK      (CONFIG_CLOCK_FREQ / CONFIG_CLOCK_DIV)
  25 #else
  26 #error "Don't know what your ColdFire CPU clock frequency is??"
  27 #endif
  28
  29 /*
  30  *      Define the processor support peripherals base address.
  31  *      This is generally setup by the boards start up code.
  32  */
  33 #define MCF_MBAR        0x10000000
  34 #define MCF_MBAR2       0x80000000
  35 #if defined(CONFIG_M520x)
  36 #define MCF_IPSBAR      0xFC000000
  37 #else
  38 #define MCF_IPSBAR      0x40000000
  39 #endif
  40
  41 #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
  42     defined(CONFIG_M520x)
  43 #undef MCF_MBAR
  44 #define MCF_MBAR        MCF_IPSBAR
  45 #elif defined(CONFIG_M532x)
  46 #undef MCF_MBAR
  47 #define MCF_MBAR        0x00000000
  48 #endif
  49
  50 /****************************************************************************/
  51 #endif  /* coldfire_h */