107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Greg White
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef SYSTEM_TARGET_H
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#define SYSTEM_TARGET_H
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#include "system-arm.h"
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#include "mmu-arm.h"
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#include "kernel.h"
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/* High enough for most tasks but low enough for reduced voltage */
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#define CPUFREQ_DEFAULT 264000000
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/* Still quite powerful, minimum possible frequency */
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#define CPUFREQ_NORMAL 132000000
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/* Overdrive mode */
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#define CPUFREQ_MAX 528000000
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#define CPU_MULTI_FREQUENCY 3
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static inline void udelay(unsigned long usecs)
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{
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unsigned long stop = GPTCNT + usecs;
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while (TIME_BEFORE(GPTCNT, stop));
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}
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static inline unsigned long usec_timer(void)
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{
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return GPTCNT;
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}
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/* Fire an event usecs microseconds from now */
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typedef void (* uevent_cb_type)(void);
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void uevent(unsigned long usecs, uevent_cb_type callback);
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void uevent_cancel(void);
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void watchdog_init(unsigned int half_seconds);
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void watchdog_service(void);
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void gpt_start(void);
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void gpt_stop(void);
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unsigned int iim_system_rev(void);
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/* Prepare for transition to (new) firmware */
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void system_prepare_fw_start(void);
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void tick_stop(void);
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void kernel_device_init(void);
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void system_halt(void);
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#define KDEV_INIT
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struct ARM_REGS {
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int r0;
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int r1;
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int r2;
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int r3;
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int r4;
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int r5;
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int r6;
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int r7;
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int r8;
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int r9;
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int r10;
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int r11;
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int r12;
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int sp;
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int lr;
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int pc;
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int cpsr;
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} regs;
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void dumpregs(void);
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bool usb_plugged(void);
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void usb_connect_event(void);
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/** Sector read/write filters **/
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/* Filter some things in the MBR - see usb-gigabeat-s.c */
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void usb_fix_mbr(unsigned char *mbr);
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#define USBSTOR_READ_SECTORS_FILTER() \
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({ if (cur_cmd.sector == 0) \
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usb_fix_mbr(cur_cmd.data[cur_cmd.data_select]); \
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0; })
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/* Disallow MBR writes entirely since it was "fixed" in usb_fix_mbr */
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#define USBSTOR_WRITE_SECTORS_FILTER() \
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({ cur_cmd.sector != 0 ? 0 : -1; })
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#endif /* SYSTEM_TARGET_H */
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