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 #if defined(CONFIG_M520x)
  24 #define MCF_IPSBAR      0xFC000000
  25 #else
  26 #define MCF_IPSBAR      0x40000000
  27 #endif
  28
  29 #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
  30     defined(CONFIG_M520x)
  31 #undef MCF_MBAR
  32 #define MCF_MBAR        MCF_IPSBAR
  33 #endif
  34
  35 /*
  36  *      Define master clock frequency.
  37  */
  38 #if defined(CONFIG_CLOCK_11MHz)
  39 #define MCF_CLK         11289600
  40 #elif defined(CONFIG_CLOCK_16MHz)
  41 #define MCF_CLK         16000000
  42 #elif defined(CONFIG_CLOCK_20MHz)
  43 #define MCF_CLK         20000000
  44 #elif defined(CONFIG_CLOCK_24MHz)
  45 #define MCF_CLK         24000000
  46 #elif defined(CONFIG_CLOCK_25MHz)
  47 #define MCF_CLK         25000000
  48 #elif defined(CONFIG_CLOCK_33MHz)
  49 #define MCF_CLK         33000000
  50 #elif defined(CONFIG_CLOCK_40MHz)
  51 #define MCF_CLK         40000000
  52 #elif defined(CONFIG_CLOCK_45MHz)
  53 #define MCF_CLK         45000000
  54 #elif defined(CONFIG_CLOCK_48MHz)
  55 #define MCF_CLK         48000000
  56 #elif defined(CONFIG_CLOCK_50MHz)
  57 #define MCF_CLK         50000000
  58 #elif defined(CONFIG_CLOCK_54MHz)
  59 #define MCF_CLK         54000000
  60 #elif defined(CONFIG_CLOCK_60MHz)
  61 #define MCF_CLK         60000000
  62 #elif defined(CONFIG_CLOCK_62_5MHz)
  63 #define MCF_CLK         62500000
  64 #elif defined(CONFIG_CLOCK_64MHz)
  65 #define MCF_CLK         64000000
  66 #elif defined(CONFIG_CLOCK_66MHz)
  67 #define MCF_CLK         66000000
  68 #elif defined(CONFIG_CLOCK_70MHz)
  69 #define MCF_CLK         70000000
  70 #elif defined(CONFIG_CLOCK_100MHz)
  71 #define MCF_CLK         100000000
  72 #elif defined(CONFIG_CLOCK_140MHz)
  73 #define MCF_CLK         140000000
  74 #elif defined(CONFIG_CLOCK_150MHz)
  75 #define MCF_CLK         150000000
  76 #elif defined(CONFIG_CLOCK_166MHz)
  77 #define MCF_CLK         166000000
  78 #else
  79 #error "Don't know what your ColdFire CPU clock frequency is??"
  80 #endif
  81
  82 /*
  83  *      One some ColdFire family members the bus clock (used by internal
  84  *      peripherals) is not the same as the CPU clock.
  85  */
  86 #if defined(CONFIG_M523x) || defined(CONFIG_M5249) || defined(CONFIG_M527x) || \
  87     defined(CONFIG_M520x)
  88 #define MCF_BUSCLK      (MCF_CLK / 2)
  89 #else
  90 #define MCF_BUSCLK      MCF_CLK
  91 #endif
  92
  93 /****************************************************************************/
  94 #endif  /* coldfire_h */