8636e6949e
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13114 a1c6a512-1295-4272-9138-f99709370657
69 lines
1.9 KiB
C
69 lines
1.9 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) 2006 by Jens Arnold
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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#include "config.h"
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#include "cpu.h"
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#include <stdbool.h>
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#include "kernel.h"
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#include "system.h"
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#include "ata-target.h"
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#include "hwcompat.h"
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#define ATA_CONTROL1 ((volatile unsigned char*)0x06200206)
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#define ATA_CONTROL2 ((volatile unsigned char*)0x06200306)
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volatile unsigned char* ata_control;
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void ata_reset(void)
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{
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/* state HRR0 */
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and_b(~0x02, &PADRH); /* assert _RESET */
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sleep(1); /* > 25us */
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/* state HRR1 */
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or_b(0x02, &PADRH); /* negate _RESET */
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sleep(1); /* > 2ms */
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}
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void ata_enable(bool on)
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{
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if(on)
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and_b(~0x80, &PADRL); /* enable ATA */
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else
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or_b(0x80, &PADRL); /* disable ATA */
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or_b(0x80, &PAIORL);
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}
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void ata_device_init(void)
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{
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or_b(0x02, &PAIORH); /* output for ATA reset */
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or_b(0x02, &PADRH); /* release ATA reset */
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PACR2 &= 0xBFFF; /* GPIO function for PA7 (IDE enable) */
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if (HW_MASK & ATA_ADDRESS_200)
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ata_control = ATA_CONTROL1;
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else
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ata_control = ATA_CONTROL2;
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}
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bool ata_is_coldstart(void)
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{
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return (PACR2 & 0x4000) != 0;
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}
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