/* * u-boot/include/linux/mtd/nand.h * * Copyright (c) 2000 David Woodhouse * Steven J. Hill * * $Id: nand.h,v 1.8 2000/10/30 17:16:17 sjhill Exp $ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Info: * Contains standard defines and IDs for NAND flash devices * * Changelog: * 01-31-2000 DMW Created * 09-18-2000 SJH Moved structure out of the Disk-On-Chip drivers * so it can be used by other NAND flash device * drivers. I also changed the copyright since none * of the original contents of this file are specific * to DoC devices. David can whack me with a baseball * bat later if I did something naughty. * 10-11-2000 SJH Added private NAND flash structure for driver * 10-24-2000 SJH Added prototype for 'nand_scan' function */ #ifndef __LINUX_MTD_NAND_H #define __LINUX_MTD_NAND_H /* * Standard NAND flash commands */ #define NAND_CMD_READ0 0 #define NAND_CMD_READ1 1 #define NAND_CMD_PAGEPROG 0x10 #define NAND_CMD_READOOB 0x50 #define NAND_CMD_ERASE1 0x60 #define NAND_CMD_STATUS 0x70 #define NAND_CMD_SEQIN 0x80 #define NAND_CMD_READID 0x90 #define NAND_CMD_ERASE2 0xd0 #define NAND_CMD_RESET 0xff /* * NAND Flash Manufacturer ID Codes */ #define NAND_MFR_TOSHIBA 0x98 #define NAND_MFR_SAMSUNG 0xec /* * NAND Flash Device ID Structure * * Structure overview: * * name - Complete name of device * * manufacture_id - manufacturer ID code of device. * * model_id - model ID code of device. * * chipshift - total number of address bits for the device which * is used to calculate address offsets and the total * number of bytes the device is capable of. * * page256 - denotes if flash device has 256 byte pages or not. * * pageadrlen - number of bytes minus one needed to hold the * complete address into the flash array. Keep in * mind that when a read or write is done to a * specific address, the address is input serially * 8 bits at a time. This structure member is used * by the read/write routines as a loop index for * shifting the address out 8 bits at a time. * * erasesize - size of an erase block in the flash device. */ struct nand_flash_dev { char * name; int manufacture_id; int model_id; int chipshift; char page256; char pageadrlen; unsigned long erasesize; }; #endif /* __LINUX_MTD_NAND_H */