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Diffstat (limited to 'system/alpha/h/flash.h')
| -rw-r--r-- | system/alpha/h/flash.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/system/alpha/h/flash.h b/system/alpha/h/flash.h new file mode 100644 index 000000000..b34838557 --- /dev/null +++ b/system/alpha/h/flash.h @@ -0,0 +1,101 @@ +#ifndef __FLASH_H_LOADED +#define __FLASH_H_LOADED + +/***************************************************************************** + +Copyright © 1994, Digital Equipment Corporation, Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, provided +that the copyright notice and this permission notice appear in all copies +of software and supporting documentation, and that the name of Digital not +be used in advertising or publicity pertaining to distribution of the software +without specific, written prior permission. Digital grants this permission +provided that you prominently mark, as not part of the original, any +modifications made to this software or documentation. + +Digital Equipment Corporation disclaims all warranties and/or guarantees +with regard to this software, including all implied warranties of fitness for +a particular purpose and merchantability, and makes no representations +regarding the use of, or the results of the use of, the software and +documentation in terms of correctness, accuracy, reliability, currentness or +otherwise; and you rely on the software, documentation and results solely at +your own risk. + +******************************************************************************/ +#define FLASH_H_RCSID "$Id: flash.h,v 1.1.1.1 1997/10/30 23:27:15 verghese Exp $" + +/* + * Defines constants and macros for controlling the flash memory device. + * + * $Log: flash.h,v $ + * Revision 1.1.1.1 1997/10/30 23:27:15 verghese + * current 10/29/97 + * + * Revision 1.2 1995/02/02 21:42:06 cruz + * Changed prototype for two flash functions. + * + * Revision 1.1 1994/11/08 21:40:02 fdh + * Initial revision + * + * + */ + +#define FLASH_BYTE 1 +#define FLASH_WORD 2 +#define FLASH_LONG 4 +#define FLASH_QUAD 8 + +#if (defined INTEL_28F008SA || defined INTEL_28F004BX_T) +/* Flash commands */ +#define READ_RESET 0xff +#define IID 0x90 +#define READ_STATUS 0x70 +#define CLEAR_STATUS 0x50 +#define ERASE_SETUP 0x20 +#define ERASE_CONFIRM 0xd0 +#define ERASE_SUSPEND 0xB0 +#define BYTE_WRITE 0x40 +#define ALT_WR_SET_WR 0x10 + +/* Status bits */ +#define SR_READY (1 << 7) +#define SR_ERASE_SUSP (1 << 6) +#define SR_ERASE_ERR (1 << 5) +#define SR_WRITE_ERR (1 << 4) +#define SR_VPP_LOW (1 << 3) +#define SR_CMD_SEQ_ERR (SR_WRITE_ERR | SR_ERASE_ERR) +#endif + +#ifdef INTEL_28F008SA +#define BX_T_M_CODE 0x89 +#define BX_T_D_CODE 0xA2 +#define DEVICE_NAME "Intel 28F008SA" + +#define NUMSEGS 16 +#define SEGSIZE (64 * 1024) +#endif /* INTEL_28F008SA */ + +#ifdef INTEL_28F004BX_T +#define BX_T_M_CODE 0x89 +#define BX_T_D_CODE 0x78 +#define DEVICE_NAME "Intel 28F004BX-T" + +#define NUMSEGS 4 +#define SEGSIZE (128 * 1024) +#endif /* INTEL_28F004BX_T */ + +/* prototypes */ +static ui inflash(ui size , ui offset); +static void outflash(ui size , ui offset , ui d); +static int flash_present(void); +static int flash_write_segs (ui segstart, ui segcnt, ui total_size, unsigned char *buf); +static int read_status(void); +static int flash_decode(int status); +static int flash_erase(ui segnum); +static int flash_program (ui offset, ui size, unsigned char *buf); +static int clear_status(void); + +#endif /* __FLASH_H_LOADED */ |