include/asm-m68knommu/coldfire.h

   1 /****************************************************************************/
   2
   3 /*
   4  *      coldfire.h -- Motorola ColdFire CPU sepecific defines
   5  *
   6  *      (C) Copyright 1999-2002, 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 #include <linux/config.h>
  16
  17 /*
  18  *      Define the processor support peripherals base address.
  19  *      This is generally setup by the boards start up code.
  20  */
  21 #define MCF_MBAR        0x10000000
  22 #define MCF_MBAR2       0x80000000
  23 #define MCF_IPSBAR      0x40000000
  24
  25 #if defined(CONFIG_M527x) || defined(CONFIG_M528x)
  26 #undef MCF_MBAR
  27 #define MCF_MBAR        MCF_IPSBAR
  28 #endif
  29
  30 /*
  31  *      Define master clock frequency.
  32  */
  33 #if defined(CONFIG_CLOCK_11MHz)
  34 #define MCF_CLK         11289600
  35 #elif defined(CONFIG_CLOCK_16MHz)
  36 #define MCF_CLK         16000000
  37 #elif defined(CONFIG_CLOCK_20MHz)
  38 #define MCF_CLK         20000000
  39 #elif defined(CONFIG_CLOCK_24MHz)
  40 #define MCF_CLK         24000000
  41 #elif defined(CONFIG_CLOCK_25MHz)
  42 #define MCF_CLK         25000000
  43 #elif defined(CONFIG_CLOCK_33MHz)
  44 #define MCF_CLK         33000000
  45 #elif defined(CONFIG_CLOCK_40MHz)
  46 #define MCF_CLK         40000000
  47 #elif defined(CONFIG_CLOCK_45MHz)
  48 #define MCF_CLK         45000000
  49 #elif defined(CONFIG_CLOCK_48MHz)
  50 #define MCF_CLK         48000000
  51 #elif defined(CONFIG_CLOCK_50MHz)
  52 #define MCF_CLK         50000000
  53 #elif defined(CONFIG_CLOCK_54MHz)
  54 #define MCF_CLK         54000000
  55 #elif defined(CONFIG_CLOCK_60MHz)
  56 #define MCF_CLK         60000000
  57 #elif defined(CONFIG_CLOCK_64MHz)
  58 #define MCF_CLK         64000000
  59 #elif defined(CONFIG_CLOCK_66MHz)
  60 #define MCF_CLK         66000000
  61 #elif defined(CONFIG_CLOCK_70MHz)
  62 #define MCF_CLK         70000000
  63 #elif defined(CONFIG_CLOCK_100MHz)
  64 #define MCF_CLK         100000000
  65 #elif defined(CONFIG_CLOCK_140MHz)
  66 #define MCF_CLK         140000000
  67 #elif defined(CONFIG_CLOCK_150MHz)
  68 #define MCF_CLK         150000000
  69 #elif defined(CONFIG_CLOCK_166MHz)
  70 #define MCF_CLK         166000000
  71 #else
  72 #error "Don't know what your ColdFire CPU clock frequency is??"
  73 #endif
  74
  75 /*
  76  *      One some ColdFire family members the bus clock (used by internal
  77  *      peripherals) is not the same as the CPU clock.
  78  */
  79 #if defined(CONFIG_M5249) || defined(CONFIG_M527x)
  80 #define MCF_BUSCLK      (MCF_CLK / 2)
  81 #else
  82 #define MCF_BUSCLK      MCF_CLK
  83 #endif
  84
  85 /****************************************************************************/
  86 #endif  /* coldfire_h */