1 /* 2 * OpenBIOS - free your system! 3 * ( firmware/flash device driver for Linux ) 4 * 5 * programming.h - prototypes for flash device programming 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 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 /* Addresses */ 28 #define ADDR_MANUFACTURER 0x0000 29 #define ADDR_DEVICE_ID 0x0001 30 #define ADDR_SECTOR_LOCK 0x0002 31 #define ADDR_HANDSHAKE 0x0003 32 33 #define ADDR_UNLOCK_1 0x5555 34 #define ADDR_UNLOCK_2 0x2AAA 35 #define ADDR_COMMAND 0x5555 36 37 /* Commands */ 38 #define CMD_UNLOCK_DATA_1 0xAA 39 #define CMD_UNLOCK_DATA_2 0x55 40 #define CMD_MANUFACTURER_UNLOCK_DATA 0x90 41 #define CMD_UNLOCK_BYPASS_MODE 0x20 42 #define CMD_PROGRAM_UNLOCK_DATA 0xA0 43 #define CMD_RESET_DATA 0xF0 44 #define CMD_SECTOR_ERASE_UNLOCK_DATA 0x80 45 #define CMD_SECTOR_ERASE_UNLOCK_DATA_2 0x30 46 #define CMD_ERASE_DATA 0x10 47 #define CMD_UNLOCK_SECTOR 0x60 48 49 extern int flashcount; 50 51 void flash_command(unsigned char *addr, unsigned char command); 52 53 void flash_program (unsigned char *addr); 54 void flash_program_atmel (unsigned char *addr); 55 56 int flash_ready_toggle (unsigned char *addr, unsigned int offset); 57 int flash_ready_poll (unsigned char *addr, unsigned int offset, unsigned char data); 58 59 int flash_erase (unsigned char *addr, unsigned int flashnum); 60 int flash_erase_sectors (unsigned char *addr, unsigned int flashnum, 61 unsigned int startsec, unsigned int endsec); 62 63 void iflash_program_byte (unsigned char *addr, unsigned int offset, unsigned char data); 64 int iflash_erase_sectors (unsigned char *addr, unsigned int flashnum, unsigned int startsec, unsigned int endsec); 65 66 unsigned char flash_readb(unsigned char *addr, unsigned int offset); 67 void flash_writeb(unsigned char *addr, unsigned int offset, unsigned char data); 68 69 70 int flash_probe_address(void *address); 71 void flash_probe_area(unsigned long romaddr, unsigned long romsize, 72 int map_always); 73 74