firmware/target/arm/tcc77x/system-target.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Dave Chapman
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #ifndef SYSTEM_TARGET_H
  22 #define SYSTEM_TARGET_H
  23
  24 #include "system-arm.h"
  25
  26 #define CPUFREQ_DEFAULT 98784000
  27 #define CPUFREQ_NORMAL  98784000
  28 #define CPUFREQ_MAX    120000000
  29
  30 #define inl(a) (*(volatile unsigned long *) (a))
  31 #define outl(a,b) (*(volatile unsigned long *) (b) = (a))
  32 #define inb(a) (*(volatile unsigned char *) (a))
  33 #define outb(a,b) (*(volatile unsigned char *) (b) = (a))
  34 #define inw(a) (*(volatile unsigned short *) (a))
  35 #define outw(a,b) (*(volatile unsigned short *) (b) = (a))
  36
  37 /* TC32 is configured to 1MHz in clock_init() */
  38 #define USEC_TIMER  TC32MCNT
  39
  40 static inline void udelay(unsigned usecs)
  41 {
  42     unsigned stop = USEC_TIMER + usecs;
  43     while (TIME_BEFORE(USEC_TIMER, stop));
  44 }
  45
  46
  47 #define TCC77X_CSCFG_BW8       0
  48 #define TCC77X_CSCFG_BW16      1
  49
  50 /* Due to hardware bug or "feature" this hack is needed to set bus width bits */
  51 static inline
  52 unsigned long tcc77x_cscfg_bw(int bw) {
  53     if (bw == TCC77X_CSCFG_BW8)
  54         return (((MCFG >> 11) & 3) ^ 3) << 28;
  55     else
  56         return (((MCFG >> 11) & 3) ^ 2) << 28;
  57 }
  58
  59 #endif /* SYSTEM_TARGET_H */