fl_sst.h

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/*
 * $Revision: 1.1 $
 *   $Author: mechavar $
 *     $Date: 2000/06/19 18:53:18 $
 *
 * Copyright (c) 1999 ARM, INC.
 * All rights reserved
 *
 */


/******************************************************************************
**   
**             
******************************************************************************/

#ifndef fl_sst_h
#define fl_sst_h

#define EPROM_BASE              (0x01800000)

#define	ROM_PROTECT_LIMIT	(EPROM_BASE + 0x6000)
#define	ADDR_TOO_LOW		(1)
#define	ADDR_TOO_HI		(2)
#define	ADDR_PROTECTED		(3)


#define SECTOR_SIZE		(0x1000) /* 4K */
#define	SST39_SECTOR_SIZE	SECTOR_SIZE

#ifdef	MAX_SECTOR_SIZE
#undef	MAX_SECTOR_SIZE
#endif

#define MAX_SECTOR_SIZE         SECTOR_SIZE
#define NUM_SECTORS_400		(0x80)

#define	BLOCK_SIZE		(10000)	/* 64K */
#define NUM_BLOCKS_400		(8)

#define MAN_SST			0xBF
#define SST_SST39VF400_ID	0x2780


/* Command codes for the flash_command routine */
#define FLASH_SELECT    0       /* no command; just perform the mapping */
#define FLASH_RESET     1       /* reset to read mode, SW ID exit */
#define FLASH_READ      1       /* reset to read mode, by any other name */
#define FLASH_AUTOSEL   2       /* autoselect, SW ID entry */
#define FLASH_PROG      3       /* program a word */
#define FLASH_CERASE    4       /* chip erase */
#define FLASH_BERASE    5       /* block erase */
#define FLASH_SERASE    6       /* sector erase */
#define FLASH_LASTCMD   6	/* used for parameter checking */

/* Return codes from flash_status */
#define STATUS_READY    0       /* ready for action */
#define STATUS_BUSY     1       /* operation in progress */
#define STATUS_ERROR    2       /* unclassified but unhappy status */

/* Low level flash device Instructions and Commands */

#define	FL_RESET		0xF0

				/* Generic command bus cycle addresses */
/* All addresses reflect 16 bit accesses */
#define FL_SEQ_ADD_1		0x5555
#define FL_SEQ_ADD_2		0x2AAA
#define FL_SEQ_ADD_3		0x5555

				/* Generic command bus cycle data */
#define FL_WORD_COM_1		0xAA
#define FL_WORD_COM_2		0x55

				/* Command specific data for cycle 3 */
#define	FL_AUTO_SELECT		0x90
#define	FL_PROGRAM		0xA0

				/* Erase function addresses and data */
#define	FL_ERASE_ADD_4		0x5555
#define	FL_ERASE_ADD_5		0x2AAA
#define	FL_CHIP_ERASE_ADD_6	0x5555

#define	FL_ERASE_3		0x80
#define	FL_ERASE_4		0xAA
#define	FL_ERASE_5		0x55
#define	FL_SECTOR_ERASE_6	0x30
#define	FL_BLOCK_ERASE_6	0x50
#define	FL_CHIP_ERASE_6		0x10

/* Macros */

#define GET_ROM_SIZE()	(MAX_SECTOR_SIZE * NUM_SECTORS_400)
#define	GET_SECTOR_START(a)	((a)&~(SST39_SECTOR_SIZE-1))

#endif