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/*
* flash.inc - constants for assembler module of FlashCard programmer
*
* Copyright (C) 1997,1998 Gero Kuhlmann <gero@gkminix.han.de>
*
* 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
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
*====================================================================
*
* Definitions used for programming the AMD Flash EPROM chip
*/
#define CMDOFS1 0x2AAA /* first command address */
#define CMDOFS2 0x5555 /* second command address */
#define CMDOP1 0x55 /* first command opcode */
#define CMDOP2 0xAA /* second command opcode */
#define AMD_ID 0x2001 /* flash EPROM ID, only support AMD */
#define ERASE1_CMD 0x80 /* first command for erasing full chip */
#define ERASE2_CMD 0x10 /* second command for erasing full chip */
#define READID_CMD 0x90 /* command to read chip ID */
#define PROG_CMD 0xA0 /* command to program a byte */
#define RESET_CMD 0xF0 /* command to reset chip state machine */
#define SEGLOW 0xC800 /* lower range for EPROM segment */
#define SEGHIGH 0xE800 /* upper range for EPROM segment */
#define SEGSTEP 0x0200 /* 8kB steps for EPROM segment */
/*
*====================================================================
*
* Vendor information for the boot rom image. These values have to be
* identical to those in makeflash.h.
*/
#define VENDOR_MAGIC "GK-makerom" /* vendor ID */
#define VENDOR_SIZE 3 /* size of vendor ID in dwords */
#define VENDOR_PROGRAM 16 /* tag for programmer segment */
#define VENDOR_ROMIMAGE 17 /* tag for boot rom image */
/*
*====================================================================
*
* Layout and magic ID of boot rom image header. These values have to
* be identical to those used by the boot rom. See SPEC.DOC of the
* boot rom source for further information.
*/
#define BOOT_MAGIC 0x1B031336 /* boot image header magic cookie */
#define BOOT_SIZE 512 /* total size of boot image header */
#define BOOT_HD_SIZE 4 /* size of header in dwords */
#define BOOT_HD_MAGIC 0 /* offset for header magic number */
#define BOOT_HD_LENGTH 4 /* offset for header length */
#define BOOT_HD_FLAG1 5 /* offset for header flag 1 */
#define BOOT_HD_FLAG2 6 /* offset for header flag 2 */
#define BOOT_HD_FLAG3 7 /* offset for header flag 3 */
#define BOOT_HD_LOCN 8 /* offset for header location */
#define BOOT_HD_EXEC 12 /* offset for execute address */
#define BOOT_HD_VENDOR 16 /* offset for header vendor information */
#define BOOT_LD_SIZE 4 /* size of load record in dwords */
#define BOOT_LD_LENGTH 0 /* offset for load record length */
#define BOOT_LD_TAG1 1 /* offset for load record tag 1 */
#define BOOT_LD_TAG2 2 /* offset for load record tag 2 */
#define BOOT_LD_FLAGS 3 /* offset for load record flags */
#define BOOT_LD_ADDR 4 /* offset for absolute address */
#define BOOT_LD_ILENGTH 8 /* offset for image length */
#define BOOT_LD_MLENGTH 12 /* offset for memory length */
#define BOOT_LD_VENDOR 16 /* offset for vendor information */
#define BOOT_FLAG_B0 0x01 /* mask for load record flag B0 */
#define BOOT_FLAG_B1 0x02 /* mask for load record flag B1 */
#define BOOT_FLAG_EOF 0x04 /* mask for load record flag EOF */
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