firmware/target/arm/imx31/gigabeat-s/system-target.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Greg White
  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 #include "mmu-arm.h"
  26
  27 /* High enough for most tasks but low enough for reduced voltage */
  28 #define CPUFREQ_DEFAULT     264000000
  29 /* Still quite powerful, minimum possible frequency */
  30 #define CPUFREQ_NORMAL      132000000
  31 /* Overdrive mode */
  32 #define CPUFREQ_MAX         528000000
  33
  34 static inline void udelay(unsigned long usecs)
  35 {
  36     unsigned long stop = GPTCNT + usecs;
  37     while (TIME_BEFORE(GPTCNT, stop));
  38 }
  39
  40 static inline unsigned long usec_timer(void)
  41 {
  42     return GPTCNT;
  43 }
  44
  45 void watchdog_init(unsigned int half_seconds);
  46 void watchdog_service(void);
  47
  48 void gpt_start(void);
  49 void gpt_stop(void);
  50
  51 unsigned int iim_system_rev(void);
  52
  53 /* Prepare for transition to (new) firmware */
  54 void system_prepare_fw_start(void);
  55 void tick_stop(void);
  56 void kernel_device_init(void);
  57 void system_halt(void);
  58
  59 /* Handle some audio lockout related tasks */
  60 void kernel_audio_locking(bool locking);
  61
  62 #define KDEV_INIT
  63
  64 struct ARM_REGS {
  65     int r0;
  66     int r1;
  67     int r2;
  68     int r3;
  69     int r4;
  70     int r5;
  71     int r6;
  72     int r7;
  73     int r8;
  74     int r9;
  75     int r10;
  76     int r11;
  77     int r12;
  78     int sp;
  79     int lr;
  80     int pc;
  81     int cpsr;
  82 } regs;
  83
  84 void dumpregs(void);
  85
  86 #endif /* SYSTEM_TARGET_H */