81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* OpenBIOS - free your system!
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* ( firmware/flash device driver for Linux )
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*
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* flashchips.h - flash device structures.
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*
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* This program is part of a free implementation of the IEEE 1275-1994
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* Standard for Boot (Initialization Configuration) Firmware.
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*
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* Copyright (C) 1998-2004 Stefan Reinauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*
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*/
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/*
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* flags structure
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* bit 0 = needs erase before write (f_needs_erase)
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* bit 1-3 flash manu type
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* bit 4-6 probably needed for more manu
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* bit 7 = sector erase happens one sector at a time
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* (f_slow_sector_erase)
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*/
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#define f_needs_erase 0x01
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/* 3 bit for flashtype */
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#define f_manuf_compl 0x0e /* Mask out bits 1-3 */
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#define f_intel_compl 0x02 /* 001 */
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#define f_atmel_compl 0x04 /* 010 */
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#define f_fwh_compl 0x08 /* 100 */
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#define f_slow_sector_erase 0x80
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#define FLASH_UNKNOWN 0
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#define FLASH_CFI 1
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#define FLASH_JEDEC 2
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typedef struct flashdevice {
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unsigned long mapped;
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unsigned long physical;
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unsigned long offset;
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unsigned int flashnum, manufnum;
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unsigned short id;
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unsigned int size, sectors;
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unsigned int idx;
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void *data;
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int open_mode, open_cnt;
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} flashdevice_t;
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typedef struct flashchip {
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char *name;
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unsigned short id;
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unsigned int voltage;
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unsigned int size; /* KBytes */
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unsigned int supported;
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unsigned int pagesize; /* Bytes */
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unsigned int flags;
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unsigned int *sectors; /* Kbytes[] including end of last sector */
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} flashchip_t;
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typedef struct manufacturer {
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char *name;
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unsigned short id;
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} manufacturer_t;
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extern unsigned int currflash;
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extern flashdevice_t flashdevices[BIOS_MAXDEV];
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extern const flashchip_t flashchips[];
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extern const manufacturer_t manufacturers[];
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