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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Jens Arnold
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "cpu.h"
#include <stdbool.h>
#include "kernel.h"
#include "system.h"
#include "ata-target.h"
#include "hwcompat.h"
#define ATA_CONTROL1 ((volatile unsigned char*)0x06200206)
#define ATA_CONTROL2 ((volatile unsigned char*)0x06200306)
volatile unsigned char* ata_control;
void ata_reset(void)
{
/* state HRR0 */
and_b(~0x02, &PADRH); /* assert _RESET */
sleep(1); /* > 25us */
/* state HRR1 */
or_b(0x02, &PADRH); /* negate _RESET */
sleep(1); /* > 2ms */
}
void ata_enable(bool on)
{
if(on)
and_b(~0x80, &PADRL); /* enable ATA */
else
or_b(0x80, &PADRL); /* disable ATA */
or_b(0x80, &PAIORL);
}
void ata_device_init(void)
{
or_b(0x02, &PAIORH); /* output for ATA reset */
or_b(0x02, &PADRH); /* release ATA reset */
PACR2 &= 0xBFFF; /* GPIO function for PA7 (IDE enable) */
if (HW_MASK & ATA_ADDRESS_200)
ata_control = ATA_CONTROL1;
else
ata_control = ATA_CONTROL2;
}
bool ata_is_coldstart(void)
{
return (PACR2 & 0x4000) != 0;
}
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