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- /***************************************************************************
- * Copyright (C) 2007 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * partially based on *
- * linux/include/linux/mtd/nand.h *
- * *
- * Copyright (c) 2000 David Woodhouse <dwmw2@mvhi.com> *
- * Steven J. Hill <sjhill@realitydiluted.com> *
- * Thomas Gleixner <tglx@linutronix.de> *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #ifndef NAND_H
- #define NAND_H
-
- #include "flash.h"
-
- struct nand_device_s;
-
- typedef struct nand_flash_controller_s
- {
- char *name;
- int (*nand_device_command)(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct nand_device_s *device);
- int (*register_commands)(struct command_context_s *cmd_ctx);
- int (*init)(struct nand_device_s *device);
- int (*reset)(struct nand_device_s *device);
- int (*command)(struct nand_device_s *device, u8 command);
- int (*address)(struct nand_device_s *device, u8 address);
- int (*write_data)(struct nand_device_s *device, u16 data);
- int (*read_data)(struct nand_device_s *device, void *data);
- int (*write_block_data)(struct nand_device_s *device, u8 *data, int size);
- int (*read_block_data)(struct nand_device_s *device, u8 *data, int size);
- int (*write_page)(struct nand_device_s *device, u32 page, u8 *data, u32 data_size, u8 *oob, u32 oob_size);
- int (*read_page)(struct nand_device_s *device, u32 page, u8 *data, u32 data_size, u8 *oob, u32 oob_size);
- int (*controller_ready)(struct nand_device_s *device, int timeout);
- int (*nand_ready)(struct nand_device_s *device, int timeout);
- } nand_flash_controller_t;
-
- typedef struct nand_block_s
- {
- u32 offset;
- u32 size;
- int is_erased;
- int is_bad;
- } nand_block_t;
-
- typedef struct nand_device_s
- {
- nand_flash_controller_t *controller;
- void *controller_priv;
- struct nand_manufacturer_s *manufacturer;
- struct nand_info_s *device;
- int bus_width;
- int address_cycles;
- int page_size;
- int erase_size;
- int use_raw;
- int num_blocks;
- nand_block_t *blocks;
- struct nand_device_s *next;
- } nand_device_t;
-
- /* NAND Flash Manufacturer ID Codes
- */
- enum
- {
- NAND_MFR_TOSHIBA = 0x98,
- NAND_MFR_SAMSUNG = 0xec,
- NAND_MFR_FUJITSU = 0x04,
- NAND_MFR_NATIONAL = 0x8f,
- NAND_MFR_RENESAS = 0x07,
- NAND_MFR_STMICRO = 0x20,
- NAND_MFR_HYNIX = 0xad,
- };
-
- typedef struct nand_manufacturer_s
- {
- int id;
- char *name;
- } nand_manufacturer_t;
-
- typedef struct nand_info_s
- {
- char *name;
- int id;
- int page_size;
- int chip_size;
- int erase_size;
- int options;
- } nand_info_t;
-
- /* Option constants for bizarre disfunctionality and real features
- */
- enum {
- /* Chip can not auto increment pages */
- NAND_NO_AUTOINCR = 0x00000001,
-
- /* Buswitdh is 16 bit */
- NAND_BUSWIDTH_16 = 0x00000002,
-
- /* Device supports partial programming without padding */
- NAND_NO_PADDING = 0x00000004,
-
- /* Chip has cache program function */
- NAND_CACHEPRG = 0x00000008,
-
- /* Chip has copy back function */
- NAND_COPYBACK = 0x00000010,
-
- /* AND Chip which has 4 banks and a confusing page / block
- * assignment. See Renesas datasheet for further information */
- NAND_IS_AND = 0x00000020,
-
- /* Chip has a array of 4 pages which can be read without
- * additional ready /busy waits */
- NAND_4PAGE_ARRAY = 0x00000040,
-
- /* Chip requires that BBT is periodically rewritten to prevent
- * bits from adjacent blocks from 'leaking' in altering data.
- * This happens with the Renesas AG-AND chips, possibly others. */
- BBT_AUTO_REFRESH = 0x00000080,
-
- /* Chip does not require ready check on read. True
- * for all large page devices, as they do not support
- * autoincrement.*/
- NAND_NO_READRDY = 0x00000100,
-
- /* Options valid for Samsung large page devices */
- NAND_SAMSUNG_LP_OPTIONS = (NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK),
-
- /* Options for new chips with large page size. The pagesize and the
- * erasesize is determined from the extended id bytes
- */
- LP_OPTIONS = (NAND_SAMSUNG_LP_OPTIONS | NAND_NO_READRDY | NAND_NO_AUTOINCR),
- LP_OPTIONS16 = (LP_OPTIONS | NAND_BUSWIDTH_16),
- };
-
- enum
- {
- /* Standard NAND flash commands */
- NAND_CMD_READ0 = 0x0,
- NAND_CMD_READ1 = 0x1,
- NAND_CMD_RNDOUT = 0x5,
- NAND_CMD_PAGEPROG = 0x10,
- NAND_CMD_READOOB = 0x50,
- NAND_CMD_ERASE1 = 0x60,
- NAND_CMD_STATUS = 0x70,
- NAND_CMD_STATUS_MULTI = 0x71,
- NAND_CMD_SEQIN = 0x80,
- NAND_CMD_RNDIN = 0x85,
- NAND_CMD_READID = 0x90,
- NAND_CMD_ERASE2 = 0xd0,
- NAND_CMD_RESET = 0xff,
-
- /* Extended commands for large page devices */
- NAND_CMD_READSTART = 0x30,
- NAND_CMD_RNDOUTSTART = 0xE0,
- NAND_CMD_CACHEDPROG = 0x15,
- };
-
- /* Status bits */
- enum
- {
- NAND_STATUS_FAIL = 0x01,
- NAND_STATUS_FAIL_N1 = 0x02,
- NAND_STATUS_TRUE_READY = 0x20,
- NAND_STATUS_READY = 0x40,
- NAND_STATUS_WP = 0x80,
- };
-
- /* OOB (spare) data formats */
- enum oob_formats
- {
- NAND_OOB_NONE = 0x0, /* no OOB data at all */
- NAND_OOB_RAW = 0x1, /* raw OOB data (16 bytes for 512b page sizes, 64 bytes for 2048b page sizes) */
- NAND_OOB_ONLY = 0x2, /* only OOB data */
- NAND_OOB_SW_ECC = 0x10, /* when writing, use SW ECC (as opposed to no ECC) */
- NAND_OOB_HW_ECC = 0x20, /* when writing, use HW ECC (as opposed to no ECC) */
- NAND_OOB_JFFS2 = 0x100, /* when writing, use JFFS2 OOB layout */
- NAND_OOB_YAFFS2 = 0x100,/* when writing, use YAFFS2 OOB layout */
- };
-
- /* Function prototypes */
- extern nand_device_t *get_nand_device_by_num(int num);
- extern int nand_read_page_raw(struct nand_device_s *device, u32 page, u8 *data, u32 data_size, u8 *oob, u32 oob_size);
- extern int nand_write_page_raw(struct nand_device_s *device, u32 page, u8 *data, u32 data_size, u8 *oob, u32 oob_size);
- extern int nand_read_status(struct nand_device_s *device, u8 *status);
-
- extern int nand_register_commands(struct command_context_s *cmd_ctx);
- extern int nand_init(struct command_context_s *cmd_ctx);
-
- #define ERROR_NAND_DEVICE_INVALID (-1100)
- #define ERROR_NAND_OPERATION_FAILED (-1101)
- #define ERROR_NAND_OPERATION_TIMEOUT (-1102)
- #define ERROR_NAND_OPERATION_NOT_SUPPORTED (-1103)
- #define ERROR_NAND_DEVICE_NOT_PROBED (-1104)
- #define ERROR_NAND_ERROR_CORRECTION_FAILED (-1105)
-
- #endif /* NAND_H */
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