| /* |
| * u-boot/include/linux/mtd/nand.h |
| * |
| * Copyright (c) 2000 David Woodhouse <dwmw2@mvhi.com> |
| * Steven J. Hill <sjhill@cotw.com> |
| * |
| * $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 */ |
