ide.h

CIRRUS 公司EP93XX系列CPU的WINCE下的BSP

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
/*++
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.

Module Name: ide.h

Abstract: Boot loader IDE support code.

Functions: None.

Notes:

--*/

#ifndef _IDE_H_
#define _IDE_H_

#define DRIVE_NUM		0

//
// Configuration register for PCMCIA cards
//
#define     CF_CONFIG                           (volatile unsigned char *)(PCMCIACARD_ATTRIBUTE + 0x200)

#define     CONFIG_SRESET                       0x80
#define     CONFIG_LEVIRQ                       0x40
#define     CONFIG_INDEX_MASK                   0x3F    

#define IDE_DATA_REG    	    0
#define IDE_ERROR_REG   	    1
#define IDE_SECTCNT_REG 	    2
#define IDE_SECTNUM_REG 	    3
#define IDE_CYLL_REG    	    4
#define IDE_CYLH_REG    	    5
#define IDE_DRVHD_REG   	    6
#define IDE_CMD_REG     	    7 
#define IDE_STAT_REG    	    7 

#define IDE_ALT_CTRL_REG	    14
#define IDE_ALT_STAT_REG	    14
#define IDE_ALT_DRVADDR_REG	    15


//
// IDE commands
//
#define IDE_DIAG_CMD    	0x90
#define IDE_RDSECTY_CMD 	0x20
#define IDE_RDSECT_CMD  	0x21
#define IDE_RDBUFF_CMD  	0xe4
#define IDE_IDDRIVE_CMD 	0xec

#define IDE_ALT_CTRL_SRST	0x04	// Software reset
#define IDE_ALT_CTRL_DSBL_INTR  0x02	// Disable interrupt

//
// IDE head register values
//
#define IDE_HEAD_MUST_BE_ON     0xA0 // These 2 bits are always on
#define IDE_HEAD_DRIVE_1        (0x00 | IDE_HEAD_MUST_BE_ON)
#define IDE_HEAD_DRIVE_2        (0x10 | IDE_HEAD_MUST_BE_ON)
#define IDE_HEAD_LBA_MODE       (0x40 | IDE_HEAD_MUST_BE_ON)

//
// IDE status register values
//
#define IDE_STATUS_IDLE		0x50
#define IDE_STATUS_DRQ		0x08
#define WAIT_IDE_BUSY 		    while((READ_IDE_UCHAR(IDE_STAT_REG) & 0x80) != 0)
#define WAIT_IDE_NOT_BUSY       while((READ_IDE_UCHAR(IDE_STAT_REG) & 0x80) == 0)
#define WAIT_IDE_DRQ    	    while((READ_IDE_UCHAR(IDE_STAT_REG) & 0x08) != 0)
#define WAIT_IDE_NOT_DRQ    	while((READ_IDE_UCHAR(IDE_STAT_REG) & 0x08) == 0)
#define WAIT_IDE_DRDY           while((READ_IDE_UCHAR(IDE_STAT_REG) & 0x40) != 0)
#define WAIT_IDE_NOT_DRDY       while((READ_IDE_UCHAR(IDE_STAT_REG) & 0x40) == 0)
#define IS_IDE_ERROR    	    (READ_IDE_UCHAR(IDE_STAT_REG) & 0x1)



void WRITE_IDE_UCHAR (unsigned long, unsigned char );
void WRITE_IDE_USHORT(unsigned long, unsigned short);
void WRITE_IDE_ULONG (unsigned long, unsigned long );
unsigned char  READ_IDE_UCHAR (unsigned long);
unsigned short READ_IDE_USHORT(unsigned long);
unsigned long  READ_IDE_ULONG (unsigned long);

//
// Type definitions.
//
typedef struct          // Drive ID header.
{
    USHORT gen;
    USHORT lcyls;       // P-CHS cyls.
    USHORT rsvd1;
    USHORT lheads;      // P-CHS heads.
    USHORT bytptrk;
    USHORT bytpsct;
    USHORT lsctptrk;    // P-CHS sect per track.
    USHORT gap;
    USHORT pll;
    USHORT venstat;
    UCHAR  sn[20];
    USHORT ctltype;
    USHORT bufsz;
    USHORT eccbyts;
    UCHAR  firmrev[8];
    UCHAR  mn[40];
    USHORT rwmults;
    USHORT dwio;
    USHORT rsvd2;
    USHORT rsvd3;
    USHORT minpio;
    USHORT mindma;
    USHORT rsvd4;
    USHORT curlcyls;
    USHORT curlheads;
    USHORT curlsctptrk;
    ULONG  cursectcap;
    USHORT rsvd5;
    ULONG  ttladdrscts;
} drv_id_hdr, *pdrv_id_hdr;



//
// Wait type codes for WaitForDisc
//
#define WAIT_TYPE_BUSY      1
#define WAIT_TYPE_NOT_BUSY  2
#define WAIT_TYPE_READY     3
#define WAIT_TYPE_DRQ       4   // wait for data request
#define WAIT_TYPE_NOT_DRQ   5 
#define WAIT_TYPE_ERROR     6


DWORD OEMHDDImageCheck(VOID);
int init_ide(void);
int id_drive(void);
int ide_reset(void);

#endif	// _IDE_H_.