arch/m68k/include/asm/coldfire.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /****************************************************************************/
   3
   4 /*
   5  *      coldfire.h -- Motorola ColdFire CPU sepecific defines
   6  *
   7  *      (C) Copyright 1999-2006, Greg Ungerer (gerg@snapgear.com)
   8  *      (C) Copyright 2000, Lineo (www.lineo.com)
   9  */
  10
  11 /****************************************************************************/
  12 #ifndef coldfire_h
  13 #define coldfire_h
  14 /****************************************************************************/
  15
  16
  17 /*
  18  *      Define master clock frequency. This is done at config time now.
  19  *      No point enumerating dozens of possible clock options here. And
  20  *      in any case new boards come along from time to time that have yet
  21  *      another different clocking frequency.
  22  */
  23 #ifdef CONFIG_CLOCK_FREQ
  24 #define MCF_CLK         CONFIG_CLOCK_FREQ
  25 #else
  26 #error "Don't know what your ColdFire CPU clock frequency is??"
  27 #endif
  28
  29 /*
  30  *      Define the processor internal peripherals base address.
  31  *
  32  *      The majority of ColdFire parts use an MBAR register to set
  33  *      the base address. Some have an IPSBAR register instead, and it
  34  *      has slightly different rules on its size and alignment. Some
  35  *      parts have fixed addresses and the internal peripherals cannot
  36  *      be relocated in the CPU address space.
  37  *
  38  *      The value of MBAR or IPSBAR is config time selectable, we no
  39  *      longer hard define it here. No MBAR or IPSBAR will be defined if
  40  *      this part has a fixed peripheral address map.
  41  */
  42 #ifdef CONFIG_MBAR
  43 #define MCF_MBAR        CONFIG_MBAR
  44 #endif
  45 #ifdef CONFIG_IPSBAR
  46 #define MCF_IPSBAR      CONFIG_IPSBAR
  47 #endif
  48
  49 /****************************************************************************/
  50 #endif  /* coldfire_h */