utils/devbios/flashchips.h

   1 /*
   2  *                     OpenBIOS - free your system!
   3  *              ( firmware/flash device driver for Linux )
   4  *
   5  *  flashchips.h - flash device structures.
   6  *
   7  *  This program is part of a free implementation of the IEEE 1275-1994
   8  *  Standard for Boot (Initialization Configuration) Firmware.
   9  *
  10  *  Copyright (C) 1998-2004  Stefan Reinauer, <stepan@openbios.org>
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; version 2 of the License.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
  24  *
  25  */
  26
  27 /*
  28  *   flags structure
  29  *   bit 0 = needs erase before write (f_needs_erase)
  30  *   bit 1-3 flash manu type
  31  *   bit 4-6 probably needed for more manu
  32  *   bit 7 = sector erase happens one sector at a time
  33  *           (f_slow_sector_erase)
  34  */
  35
  36 #define f_needs_erase   0x01
  37
  38 /* 3 bit for flashtype */
  39 #define f_manuf_compl   0x0e /* Mask out bits 1-3 */
  40 #define f_intel_compl   0x02 /* 001 */
  41 #define f_atmel_compl   0x04 /* 010 */
  42 #define f_fwh_compl     0x08 /* 100 */
  43
  44 #define f_slow_sector_erase 0x80
  45
  46 #define FLASH_UNKNOWN   0
  47 #define FLASH_CFI       1
  48 #define FLASH_JEDEC     2
  49
  50 typedef struct flashdevice {
  51         unsigned long   mapped;
  52         unsigned long   physical;
  53         unsigned long   offset;
  54         unsigned int    flashnum, manufnum;
  55         unsigned short  id;
  56         unsigned int    size, sectors;
  57         unsigned int    idx;
  58         void            *data;
  59         int             open_mode, open_cnt;
  60 } flashdevice_t;
  61
  62 typedef struct flashchip {
  63         char            *name;
  64         unsigned short  id;
  65         unsigned int    voltage;
  66         unsigned int    size;           /* KBytes */
  67         unsigned int    supported;
  68         unsigned int    pagesize;       /* Bytes */
  69         unsigned int    flags;
  70         unsigned int    *sectors;       /* Kbytes[] including end of last sector */
  71 } flashchip_t;
  72
  73 typedef struct manufacturer {
  74         char            *name;
  75         unsigned short  id;
  76 } manufacturer_t;
  77
  78 extern unsigned int currflash;
  79 extern flashdevice_t  flashdevices[BIOS_MAXDEV];
  80 extern const flashchip_t flashchips[];
  81 extern const manufacturer_t manufacturers[];