Rewrite of NAND code based on what is in 2.6.12 Linux kernel
Patch by Ladislav Michl, 29 Jun 2005
This commit is contained in:
Wolfgang Denk
parent
024447b186
commit
932394ac43
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@ -1,3 +1,10 @@
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======================================================================
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Changes for U-Boot 1.1.4:
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======================================================================
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* Rewrite of NAND code based on what is in 2.6.12 Linux kernel
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Patch by Ladislav Michl, 29 Jun 2005
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======================================================================
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Changes for U-Boot 1.1.3:
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======================================================================
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2099
common/cmd_nand.c
2099
common/cmd_nand.c
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Load Diff
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@ -0,0 +1,17 @@
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include $(TOPDIR)/config.mk
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LIB := libnand.a
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OBJS := nand.o nand_base.o nand_ids.o nand_ecc.o nand_bbt.o
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all: $(LIB)
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$(LIB): $(OBJS)
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$(AR) crv $@ $(OBJS)
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#########################################################################
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.depend: Makefile $(OBJS:.o=.c)
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$(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@
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sinclude .depend
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/*
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* (C) Copyright 2005
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* 2N Telekomunikace, a.s. <www.2n.cz>
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* Ladislav Michl <michl@2n.cz>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#if (CONFIG_COMMANDS & CFG_CMD_NAND)
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#include <nand.h>
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#ifndef CFG_NAND_BASE_LIST
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#define CFG_NAND_BASE_LIST { CFG_NAND_BASE }
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#endif
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int nand_curr_device = -1;
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nand_info_t nand_info[CFG_MAX_NAND_DEVICE];
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static struct nand_chip nand_chip[CFG_MAX_NAND_DEVICE];
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static ulong base_address[CFG_MAX_NAND_DEVICE] = CFG_NAND_BASE_LIST;
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static const char default_nand_name[] = "nand";
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extern void board_nand_init(struct nand_chip *nand);
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static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand,
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ulong base_addr)
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{
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mtd->priv = nand;
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nand->IO_ADDR_R = nand->IO_ADDR_W = base_addr;
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board_nand_init(nand);
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if (nand_scan(mtd, 1) == 0) {
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if (!mtd->name)
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mtd->name = default_nand_name;
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} else
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mtd->name = NULL;
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}
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void nand_init(void)
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{
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int i;
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for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
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nand_init_chip(&nand_info[i], &nand_chip[i], base_address[i]);
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if (nand_curr_device == -1)
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nand_curr_device = i;
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}
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}
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#endif
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File diff suppressed because it is too large
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File diff suppressed because it is too large
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@ -0,0 +1,244 @@
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/*
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* This file contains an ECC algorithm from Toshiba that detects and
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* corrects 1 bit errors in a 256 byte block of data.
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*
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* drivers/mtd/nand/nand_ecc.c
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*
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* Copyright (C) 2000-2004 Steven J. Hill (sjhill@realitydiluted.com)
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* Toshiba America Electronics Components, Inc.
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*
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* $Id: nand_ecc.c,v 1.14 2004/06/16 15:34:37 gleixner Exp $
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*
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* This file is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 or (at your option) any
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* later version.
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*
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* This file is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this file; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* As a special exception, if other files instantiate templates or use
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* macros or inline functions from these files, or you compile these
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* files and link them with other works to produce a work based on these
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* files, these files do not by themselves cause the resulting work to be
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* covered by the GNU General Public License. However the source code for
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* these files must still be made available in accordance with section (3)
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* of the GNU General Public License.
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*
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* This exception does not invalidate any other reasons why a work based on
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* this file might be covered by the GNU General Public License.
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*/
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#include <common.h>
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#if (CONFIG_COMMANDS & CFG_CMD_NAND)
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/*
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* Pre-calculated 256-way 1 byte column parity
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*/
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static const u_char nand_ecc_precalc_table[] = {
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0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00,
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0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
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0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
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0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
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0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
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0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
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0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
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0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
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0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
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0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
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0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
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0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
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0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
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0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
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0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
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0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00
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};
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/**
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* nand_trans_result - [GENERIC] create non-inverted ECC
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* @reg2: line parity reg 2
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* @reg3: line parity reg 3
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* @ecc_code: ecc
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*
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* Creates non-inverted ECC code from line parity
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*/
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static void nand_trans_result(u_char reg2, u_char reg3,
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u_char *ecc_code)
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{
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u_char a, b, i, tmp1, tmp2;
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/* Initialize variables */
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a = b = 0x80;
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tmp1 = tmp2 = 0;
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/* Calculate first ECC byte */
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for (i = 0; i < 4; i++) {
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if (reg3 & a) /* LP15,13,11,9 --> ecc_code[0] */
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tmp1 |= b;
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b >>= 1;
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if (reg2 & a) /* LP14,12,10,8 --> ecc_code[0] */
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tmp1 |= b;
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b >>= 1;
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a >>= 1;
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}
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/* Calculate second ECC byte */
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b = 0x80;
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for (i = 0; i < 4; i++) {
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if (reg3 & a) /* LP7,5,3,1 --> ecc_code[1] */
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tmp2 |= b;
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b >>= 1;
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if (reg2 & a) /* LP6,4,2,0 --> ecc_code[1] */
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tmp2 |= b;
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b >>= 1;
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a >>= 1;
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}
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/* Store two of the ECC bytes */
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ecc_code[0] = tmp1;
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ecc_code[1] = tmp2;
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}
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/**
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* nand_calculate_ecc - [NAND Interface] Calculate 3 byte ECC code for 256 byte block
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* @mtd: MTD block structure
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* @dat: raw data
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* @ecc_code: buffer for ECC
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*/
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int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
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{
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u_char idx, reg1, reg2, reg3;
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int j;
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/* Initialize variables */
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reg1 = reg2 = reg3 = 0;
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ecc_code[0] = ecc_code[1] = ecc_code[2] = 0;
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/* Build up column parity */
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for(j = 0; j < 256; j++) {
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/* Get CP0 - CP5 from table */
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idx = nand_ecc_precalc_table[dat[j]];
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reg1 ^= (idx & 0x3f);
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/* All bit XOR = 1 ? */
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if (idx & 0x40) {
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reg3 ^= (u_char) j;
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reg2 ^= ~((u_char) j);
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}
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}
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/* Create non-inverted ECC code from line parity */
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nand_trans_result(reg2, reg3, ecc_code);
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/* Calculate final ECC code */
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ecc_code[0] = ~ecc_code[0];
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ecc_code[1] = ~ecc_code[1];
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ecc_code[2] = ((~reg1) << 2) | 0x03;
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return 0;
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}
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/**
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* nand_correct_data - [NAND Interface] Detect and correct bit error(s)
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* @mtd: MTD block structure
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* @dat: raw data read from the chip
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* @read_ecc: ECC from the chip
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* @calc_ecc: the ECC calculated from raw data
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*
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* Detect and correct a 1 bit error for 256 byte block
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*/
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int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc)
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{
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u_char a, b, c, d1, d2, d3, add, bit, i;
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/* Do error detection */
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d1 = calc_ecc[0] ^ read_ecc[0];
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d2 = calc_ecc[1] ^ read_ecc[1];
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d3 = calc_ecc[2] ^ read_ecc[2];
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if ((d1 | d2 | d3) == 0) {
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/* No errors */
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return 0;
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}
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else {
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a = (d1 ^ (d1 >> 1)) & 0x55;
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b = (d2 ^ (d2 >> 1)) & 0x55;
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c = (d3 ^ (d3 >> 1)) & 0x54;
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/* Found and will correct single bit error in the data */
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if ((a == 0x55) && (b == 0x55) && (c == 0x54)) {
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c = 0x80;
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add = 0;
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a = 0x80;
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for (i=0; i<4; i++) {
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if (d1 & c)
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add |= a;
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c >>= 2;
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a >>= 1;
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}
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c = 0x80;
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for (i=0; i<4; i++) {
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if (d2 & c)
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add |= a;
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c >>= 2;
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a >>= 1;
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}
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bit = 0;
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b = 0x04;
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c = 0x80;
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for (i=0; i<3; i++) {
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if (d3 & c)
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bit |= b;
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c >>= 2;
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b >>= 1;
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}
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b = 0x01;
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a = dat[add];
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a ^= (b << bit);
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dat[add] = a;
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return 1;
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}
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else {
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i = 0;
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while (d1) {
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if (d1 & 0x01)
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++i;
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d1 >>= 1;
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}
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while (d2) {
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if (d2 & 0x01)
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++i;
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d2 >>= 1;
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}
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while (d3) {
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if (d3 & 0x01)
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++i;
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d3 >>= 1;
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}
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if (i == 1) {
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/* ECC Code Error Correction */
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read_ecc[0] = calc_ecc[0];
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read_ecc[1] = calc_ecc[1];
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read_ecc[2] = calc_ecc[2];
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return 2;
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}
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else {
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/* Uncorrectable Error */
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return -1;
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}
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}
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}
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/* Should never happen */
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return -1;
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}
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#endif /* CONFIG_COMMANDS & CFG_CMD_NAND */
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@ -0,0 +1,127 @@
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/*
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* drivers/mtd/nandids.c
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*
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* Copyright (C) 2002 Thomas Gleixner (tglx@linutronix.de)
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*
|
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* $Id: nand_ids.c,v 1.10 2004/05/26 13:40:12 gleixner 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.
|
||||
*
|
||||
*/
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#include <common.h>
|
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|
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#if (CONFIG_COMMANDS & CFG_CMD_NAND)
|
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|
||||
#include <linux/mtd/nand.h>
|
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|
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/*
|
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* Chip ID list
|
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*
|
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* Name. ID code, pagesize, chipsize in MegaByte, eraseblock size,
|
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* options
|
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*
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* Pagesize; 0, 256, 512
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* 0 get this information from the extended chip ID
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+ 256 256 Byte page size
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* 512 512 Byte page size
|
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*/
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struct nand_flash_dev nand_flash_ids[] = {
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{"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0},
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{"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0},
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{"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0},
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{"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, 0},
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{"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, 0},
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{"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, 0},
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{"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 0},
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{"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, 0},
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{"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, 0},
|
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{"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, 0},
|
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|
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{"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, 0},
|
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{"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0},
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{"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16},
|
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{"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16},
|
||||
|
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{"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0},
|
||||
{"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0},
|
||||
{"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16},
|
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{"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16},
|
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|
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{"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, 0},
|
||||
{"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, 0},
|
||||
{"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16},
|
||||
{"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16},
|
||||
|
||||
{"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, 0},
|
||||
{"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, 0},
|
||||
{"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16},
|
||||
{"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16},
|
||||
|
||||
{"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, 0},
|
||||
{"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0},
|
||||
{"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16},
|
||||
{"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16},
|
||||
|
||||
{"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0},
|
||||
|
||||
{"NAND 512MiB 3,3V 8-bit", 0xDC, 512, 512, 0x4000, 0},
|
||||
|
||||
/* These are the new chips with large page size. The pagesize
|
||||
* and the erasesize is determined from the extended id bytes
|
||||
*/
|
||||
/* 1 Gigabit */
|
||||
{"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
{"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
|
||||
/* 2 Gigabit */
|
||||
{"NAND 256MiB 1,8V 8-bit", 0xAA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 256MiB 3,3V 8-bit", 0xDA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 256MiB 1,8V 16-bit", 0xBA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
{"NAND 256MiB 3,3V 16-bit", 0xCA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
|
||||
/* 4 Gigabit */
|
||||
{"NAND 512MiB 1,8V 8-bit", 0xAC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 512MiB 3,3V 8-bit", 0xDC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 512MiB 1,8V 16-bit", 0xBC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
{"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
|
||||
/* 8 Gigabit */
|
||||
{"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
{"NAND 1GiB 3,3V 16-bit", 0xC3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
|
||||
/* 16 Gigabit */
|
||||
{"NAND 2GiB 1,8V 8-bit", 0xA5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 2GiB 3,3V 8-bit", 0xD5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
|
||||
{"NAND 2GiB 1,8V 16-bit", 0xB5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
{"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
|
||||
|
||||
/* Renesas AND 1 Gigabit. Those chips do not support extended id and have a strange page/block layout !
|
||||
* The chosen minimum erasesize is 4 * 2 * 2048 = 16384 Byte, as those chips have an array of 4 page planes
|
||||
* 1 block = 2 pages, but due to plane arrangement the blocks 0-3 consists of page 0 + 4,1 + 5, 2 + 6, 3 + 7
|
||||
* Anyway JFFS2 would increase the eraseblock size so we chose a combined one which can be erased in one go
|
||||
* There are more speed improvements for reads and writes possible, but not implemented now
|
||||
*/
|
||||
{"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY},
|
||||
|
||||
{NULL,}
|
||||
};
|
||||
|
||||
/*
|
||||
* Manufacturer ID list
|
||||
*/
|
||||
struct nand_manufacturers nand_manuf_ids[] = {
|
||||
{NAND_MFR_TOSHIBA, "Toshiba"},
|
||||
{NAND_MFR_SAMSUNG, "Samsung"},
|
||||
{NAND_MFR_FUJITSU, "Fujitsu"},
|
||||
{NAND_MFR_NATIONAL, "National"},
|
||||
{NAND_MFR_RENESAS, "Renesas"},
|
||||
{NAND_MFR_STMICRO, "ST Micro"},
|
||||
{0x0, "Unknown"}
|
||||
};
|
||||
#endif
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,133 @@
|
|||
#ifndef jffs2_private_h
|
||||
#define jffs2_private_h
|
||||
|
||||
#include <jffs2/jffs2.h>
|
||||
|
||||
struct b_node {
|
||||
struct b_node *next;
|
||||
};
|
||||
|
||||
struct b_inode {
|
||||
struct b_inode *next;
|
||||
u32 offset; /* physical offset to beginning of real inode */
|
||||
u32 version;
|
||||
u32 ino;
|
||||
u32 isize;
|
||||
u32 csize;
|
||||
};
|
||||
|
||||
struct b_dirent {
|
||||
struct b_dirent *next;
|
||||
u32 offset; /* physical offset to beginning of real dirent */
|
||||
u32 version;
|
||||
u32 pino;
|
||||
u32 ino;
|
||||
unsigned int nhash;
|
||||
unsigned char nsize;
|
||||
unsigned char type;
|
||||
};
|
||||
|
||||
struct b_list {
|
||||
struct b_node *listTail;
|
||||
struct b_node *listHead;
|
||||
unsigned int listCount;
|
||||
struct mem_block *listMemBase;
|
||||
};
|
||||
|
||||
struct b_lists {
|
||||
char *partOffset;
|
||||
struct b_list dir;
|
||||
struct b_list frag;
|
||||
};
|
||||
|
||||
struct b_compr_info {
|
||||
u32 num_frags;
|
||||
u32 compr_sum;
|
||||
u32 decompr_sum;
|
||||
};
|
||||
|
||||
struct b_jffs2_info {
|
||||
struct b_compr_info compr_info[JFFS2_NUM_COMPR];
|
||||
};
|
||||
|
||||
static inline int
|
||||
hdr_crc(struct jffs2_unknown_node *node)
|
||||
{
|
||||
#if 1
|
||||
u32 crc = crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
|
||||
#else
|
||||
/* what's the semantics of this? why is this here? */
|
||||
u32 crc = crc32_no_comp(~0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
|
||||
|
||||
crc ^= ~0;
|
||||
#endif
|
||||
if (node->hdr_crc != crc) {
|
||||
return 0;
|
||||
} else {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
static inline int
|
||||
dirent_crc(struct jffs2_raw_dirent *node)
|
||||
{
|
||||
if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_dirent) - 8)) {
|
||||
return 0;
|
||||
} else {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
static inline int
|
||||
dirent_name_crc(struct jffs2_raw_dirent *node)
|
||||
{
|
||||
if (node->name_crc != crc32_no_comp(0, (unsigned char *)&(node->name), node->nsize)) {
|
||||
return 0;
|
||||
} else {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
static inline int
|
||||
inode_crc(struct jffs2_raw_inode *node)
|
||||
{
|
||||
if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_inode) - 8)) {
|
||||
return 0;
|
||||
} else {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
/* Borrowed from include/linux/dcache.h */
|
||||
|
||||
/* Name hashing routines. Initial hash value */
|
||||
/* Hash courtesy of the R5 hash in reiserfs modulo sign bits */
|
||||
#define init_name_hash() 0
|
||||
|
||||
/* partial hash update function. Assume roughly 4 bits per character */
|
||||
static inline unsigned long
|
||||
partial_name_hash(unsigned long c, unsigned long prevhash)
|
||||
{
|
||||
return (prevhash + (c << 4) + (c >> 4)) * 11;
|
||||
}
|
||||
|
||||
/*
|
||||
* Finally: cut down the number of bits to a int value (and try to avoid
|
||||
* losing bits)
|
||||
*/
|
||||
static inline unsigned long end_name_hash(unsigned long hash)
|
||||
{
|
||||
return (unsigned int) hash;
|
||||
}
|
||||
|
||||
/* Compute the hash for a name string. */
|
||||
static inline unsigned int
|
||||
full_name_hash(const unsigned char *name, unsigned int len)
|
||||
{
|
||||
unsigned long hash = init_name_hash();
|
||||
while (len--)
|
||||
hash = partial_name_hash(*name++, hash);
|
||||
return end_name_hash(hash);
|
||||
}
|
||||
|
||||
#endif /* jffs2_private.h */
|
||||
|
|
@ -0,0 +1,44 @@
|
|||
#ifndef _LINUX_COMPAT_H_
|
||||
#define _LINUX_COMPAT_H_
|
||||
|
||||
#define __user
|
||||
#define __iomem
|
||||
|
||||
#define ndelay(x) udelay(1)
|
||||
|
||||
#define printk printf
|
||||
|
||||
#define KERN_EMERG
|
||||
#define KERN_ALERT
|
||||
#define KERN_CRIT
|
||||
#define KERN_ERR
|
||||
#define KERN_WARNING
|
||||
#define KERN_NOTICE
|
||||
#define KERN_INFO
|
||||
#define KERN_DEBUG
|
||||
|
||||
#define kmalloc(size, flags) malloc(size)
|
||||
#define kfree(ptr) free(ptr)
|
||||
|
||||
/*
|
||||
* ..and if you can't take the strict
|
||||
* types, you can specify one yourself.
|
||||
*
|
||||
* Or not use min/max at all, of course.
|
||||
*/
|
||||
#define min_t(type,x,y) \
|
||||
({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
|
||||
#define max_t(type,x,y) \
|
||||
({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
|
||||
|
||||
#define BUG() do { \
|
||||
printf("U-Boot BUG at %s:%d!\n", __FILE__, __LINE__); \
|
||||
} while (0)
|
||||
|
||||
#define BUG_ON(condition) do { if (condition) BUG(); } while(0)
|
||||
|
||||
#define likely(x) __builtin_expect(!!(x), 1)
|
||||
#define unlikely(x) __builtin_expect(!!(x), 0)
|
||||
|
||||
#define PAGE_SIZE 4096
|
||||
#endif
|
||||
|
|
@ -0,0 +1,99 @@
|
|||
/*
|
||||
* $Id: mtd-abi.h,v 1.7 2004/11/23 15:37:32 gleixner Exp $
|
||||
*
|
||||
* Portions of MTD ABI definition which are shared by kernel and user space
|
||||
*/
|
||||
|
||||
#ifndef __MTD_ABI_H__
|
||||
#define __MTD_ABI_H__
|
||||
|
||||
struct erase_info_user {
|
||||
uint32_t start;
|
||||
uint32_t length;
|
||||
};
|
||||
|
||||
struct mtd_oob_buf {
|
||||
uint32_t start;
|
||||
uint32_t length;
|
||||
unsigned char *ptr;
|
||||
};
|
||||
|
||||
#define MTD_ABSENT 0
|
||||
#define MTD_RAM 1
|
||||
#define MTD_ROM 2
|
||||
#define MTD_NORFLASH 3
|
||||
#define MTD_NANDFLASH 4
|
||||
#define MTD_PEROM 5
|
||||
#define MTD_OTHER 14
|
||||
#define MTD_UNKNOWN 15
|
||||
|
||||
#define MTD_CLEAR_BITS 1 // Bits can be cleared (flash)
|
||||
#define MTD_SET_BITS 2 // Bits can be set
|
||||
#define MTD_ERASEABLE 4 // Has an erase function
|
||||
#define MTD_WRITEB_WRITEABLE 8 // Direct IO is possible
|
||||
#define MTD_VOLATILE 16 // Set for RAMs
|
||||
#define MTD_XIP 32 // eXecute-In-Place possible
|
||||
#define MTD_OOB 64 // Out-of-band data (NAND flash)
|
||||
#define MTD_ECC 128 // Device capable of automatic ECC
|
||||
#define MTD_NO_VIRTBLOCKS 256 // Virtual blocks not allowed
|
||||
|
||||
// Some common devices / combinations of capabilities
|
||||
#define MTD_CAP_ROM 0
|
||||
#define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
|
||||
#define MTD_CAP_NORFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE)
|
||||
#define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
|
||||
#define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS)
|
||||
|
||||
|
||||
// Types of automatic ECC/Checksum available
|
||||
#define MTD_ECC_NONE 0 // No automatic ECC available
|
||||
#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip
|
||||
#define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices
|
||||
|
||||
/* ECC byte placement */
|
||||
#define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended)
|
||||
#define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode)
|
||||
#define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme
|
||||
#define MTD_NANDECC_PLACEONLY 3 // Use the given placement in the structure (Do not store ecc result on read)
|
||||
#define MTD_NANDECC_AUTOPL_USR 4 // Use the given autoplacement scheme rather than using the default
|
||||
|
||||
struct mtd_info_user {
|
||||
uint8_t type;
|
||||
uint32_t flags;
|
||||
uint32_t size; // Total size of the MTD
|
||||
uint32_t erasesize;
|
||||
uint32_t oobblock; // Size of OOB blocks (e.g. 512)
|
||||
uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
|
||||
uint32_t ecctype;
|
||||
uint32_t eccsize;
|
||||
};
|
||||
|
||||
struct region_info_user {
|
||||
uint32_t offset; /* At which this region starts,
|
||||
* from the beginning of the MTD */
|
||||
uint32_t erasesize; /* For this region */
|
||||
uint32_t numblocks; /* Number of blocks in this region */
|
||||
uint32_t regionindex;
|
||||
};
|
||||
|
||||
#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
|
||||
#define MEMERASE _IOW('M', 2, struct erase_info_user)
|
||||
#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
|
||||
#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
|
||||
#define MEMLOCK _IOW('M', 5, struct erase_info_user)
|
||||
#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
|
||||
#define MEMGETREGIONCOUNT _IOR('M', 7, int)
|
||||
#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
|
||||
#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
|
||||
#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
|
||||
#define MEMGETBADBLOCK _IOW('M', 11, loff_t)
|
||||
#define MEMSETBADBLOCK _IOW('M', 12, loff_t)
|
||||
|
||||
struct nand_oobinfo {
|
||||
uint32_t useecc;
|
||||
uint32_t eccbytes;
|
||||
uint32_t oobfree[8][2];
|
||||
uint32_t eccpos[32];
|
||||
};
|
||||
|
||||
#endif /* __MTD_ABI_H__ */
|
||||
|
|
@ -0,0 +1,214 @@
|
|||
/*
|
||||
* $Id: mtd.h,v 1.56 2004/08/09 18:46:04 dmarlin Exp $
|
||||
*
|
||||
* Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
|
||||
*
|
||||
* Released under GPL
|
||||
*/
|
||||
|
||||
#ifndef __MTD_MTD_H__
|
||||
#define __MTD_MTD_H__
|
||||
#include <linux/types.h>
|
||||
#include <linux/mtd/mtd-abi.h>
|
||||
|
||||
#define MAX_MTD_DEVICES 16
|
||||
|
||||
#define MTD_ERASE_PENDING 0x01
|
||||
#define MTD_ERASING 0x02
|
||||
#define MTD_ERASE_SUSPEND 0x04
|
||||
#define MTD_ERASE_DONE 0x08
|
||||
#define MTD_ERASE_FAILED 0x10
|
||||
|
||||
/* If the erase fails, fail_addr might indicate exactly which block failed. If
|
||||
fail_addr = 0xffffffff, the failure was not at the device level or was not
|
||||
specific to any particular block. */
|
||||
struct erase_info {
|
||||
struct mtd_info *mtd;
|
||||
u_int32_t addr;
|
||||
u_int32_t len;
|
||||
u_int32_t fail_addr;
|
||||
u_long time;
|
||||
u_long retries;
|
||||
u_int dev;
|
||||
u_int cell;
|
||||
void (*callback) (struct erase_info *self);
|
||||
u_long priv;
|
||||
u_char state;
|
||||
struct erase_info *next;
|
||||
};
|
||||
|
||||
struct mtd_erase_region_info {
|
||||
u_int32_t offset; /* At which this region starts, from the beginning of the MTD */
|
||||
u_int32_t erasesize; /* For this region */
|
||||
u_int32_t numblocks; /* Number of blocks of erasesize in this region */
|
||||
};
|
||||
|
||||
struct mtd_info {
|
||||
u_char type;
|
||||
u_int32_t flags;
|
||||
u_int32_t size; // Total size of the MTD
|
||||
|
||||
/* "Major" erase size for the device. Naïve users may take this
|
||||
* to be the only erase size available, or may use the more detailed
|
||||
* information below if they desire
|
||||
*/
|
||||
u_int32_t erasesize;
|
||||
|
||||
u_int32_t oobblock; // Size of OOB blocks (e.g. 512)
|
||||
u_int32_t oobsize; // Amount of OOB data per block (e.g. 16)
|
||||
u_int32_t oobavail; // Number of bytes in OOB area available for fs
|
||||
u_int32_t ecctype;
|
||||
u_int32_t eccsize;
|
||||
|
||||
|
||||
// Kernel-only stuff starts here.
|
||||
char *name;
|
||||
int index;
|
||||
|
||||
// oobinfo is a nand_oobinfo structure, which can be set by iotcl (MEMSETOOBINFO)
|
||||
struct nand_oobinfo oobinfo;
|
||||
|
||||
/* Data for variable erase regions. If numeraseregions is zero,
|
||||
* it means that the whole device has erasesize as given above.
|
||||
*/
|
||||
int numeraseregions;
|
||||
struct mtd_erase_region_info *eraseregions;
|
||||
|
||||
/* This really shouldn't be here. It can go away in 2.5 */
|
||||
u_int32_t bank_size;
|
||||
|
||||
int (*erase) (struct mtd_info *mtd, struct erase_info *instr);
|
||||
|
||||
/* This stuff for eXecute-In-Place */
|
||||
int (*point) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf);
|
||||
|
||||
/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
|
||||
void (*unpoint) (struct mtd_info *mtd, u_char * addr, loff_t from, size_t len);
|
||||
|
||||
|
||||
int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
|
||||
|
||||
int (*read_ecc) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
|
||||
int (*write_ecc) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
|
||||
|
||||
int (*read_oob) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
int (*write_oob) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
|
||||
|
||||
/*
|
||||
* Methods to access the protection register area, present in some
|
||||
* flash devices. The user data is one time programmable but the
|
||||
* factory data is read only.
|
||||
*/
|
||||
int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
|
||||
int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
|
||||
/* This function is not yet implemented */
|
||||
int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
|
||||
#if 0
|
||||
/* kvec-based read/write methods. We need these especially for NAND flash,
|
||||
with its limited number of write cycles per erase.
|
||||
NB: The 'count' parameter is the number of _vectors_, each of
|
||||
which contains an (ofs, len) tuple.
|
||||
*/
|
||||
int (*readv) (struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from, size_t *retlen);
|
||||
int (*readv_ecc) (struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from,
|
||||
size_t *retlen, u_char *eccbuf, struct nand_oobinfo *oobsel);
|
||||
int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen);
|
||||
int (*writev_ecc) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to,
|
||||
size_t *retlen, u_char *eccbuf, struct nand_oobinfo *oobsel);
|
||||
#endif
|
||||
/* Sync */
|
||||
void (*sync) (struct mtd_info *mtd);
|
||||
#if 0
|
||||
/* Chip-supported device locking */
|
||||
int (*lock) (struct mtd_info *mtd, loff_t ofs, size_t len);
|
||||
int (*unlock) (struct mtd_info *mtd, loff_t ofs, size_t len);
|
||||
|
||||
/* Power Management functions */
|
||||
int (*suspend) (struct mtd_info *mtd);
|
||||
void (*resume) (struct mtd_info *mtd);
|
||||
#endif
|
||||
/* Bad block management functions */
|
||||
int (*block_isbad) (struct mtd_info *mtd, loff_t ofs);
|
||||
int (*block_markbad) (struct mtd_info *mtd, loff_t ofs);
|
||||
|
||||
void *priv;
|
||||
|
||||
struct module *owner;
|
||||
int usecount;
|
||||
};
|
||||
|
||||
|
||||
/* Kernel-side ioctl definitions */
|
||||
|
||||
extern int add_mtd_device(struct mtd_info *mtd);
|
||||
extern int del_mtd_device (struct mtd_info *mtd);
|
||||
|
||||
extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num);
|
||||
|
||||
extern void put_mtd_device(struct mtd_info *mtd);
|
||||
|
||||
#if 0
|
||||
struct mtd_notifier {
|
||||
void (*add)(struct mtd_info *mtd);
|
||||
void (*remove)(struct mtd_info *mtd);
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
|
||||
extern void register_mtd_user (struct mtd_notifier *new);
|
||||
extern int unregister_mtd_user (struct mtd_notifier *old);
|
||||
|
||||
int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
|
||||
unsigned long count, loff_t to, size_t *retlen);
|
||||
|
||||
int default_mtd_readv(struct mtd_info *mtd, struct kvec *vecs,
|
||||
unsigned long count, loff_t from, size_t *retlen);
|
||||
#endif
|
||||
|
||||
#define MTD_ERASE(mtd, args...) (*(mtd->erase))(mtd, args)
|
||||
#define MTD_POINT(mtd, a,b,c,d) (*(mtd->point))(mtd, a,b,c, (u_char **)(d))
|
||||
#define MTD_UNPOINT(mtd, arg) (*(mtd->unpoint))(mtd, (u_char *)arg)
|
||||
#define MTD_READ(mtd, args...) (*(mtd->read))(mtd, args)
|
||||
#define MTD_WRITE(mtd, args...) (*(mtd->write))(mtd, args)
|
||||
#define MTD_READV(mtd, args...) (*(mtd->readv))(mtd, args)
|
||||
#define MTD_WRITEV(mtd, args...) (*(mtd->writev))(mtd, args)
|
||||
#define MTD_READECC(mtd, args...) (*(mtd->read_ecc))(mtd, args)
|
||||
#define MTD_WRITEECC(mtd, args...) (*(mtd->write_ecc))(mtd, args)
|
||||
#define MTD_READOOB(mtd, args...) (*(mtd->read_oob))(mtd, args)
|
||||
#define MTD_WRITEOOB(mtd, args...) (*(mtd->write_oob))(mtd, args)
|
||||
#define MTD_SYNC(mtd) do { if (mtd->sync) (*(mtd->sync))(mtd); } while (0)
|
||||
|
||||
|
||||
#ifdef CONFIG_MTD_PARTITIONS
|
||||
void mtd_erase_callback(struct erase_info *instr);
|
||||
#else
|
||||
static inline void mtd_erase_callback(struct erase_info *instr)
|
||||
{
|
||||
if (instr->callback)
|
||||
instr->callback(instr);
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Debugging macro and defines
|
||||
*/
|
||||
#define MTD_DEBUG_LEVEL0 (0) /* Quiet */
|
||||
#define MTD_DEBUG_LEVEL1 (1) /* Audible */
|
||||
#define MTD_DEBUG_LEVEL2 (2) /* Loud */
|
||||
#define MTD_DEBUG_LEVEL3 (3) /* Noisy */
|
||||
|
||||
#ifdef CONFIG_MTD_DEBUG
|
||||
#define DEBUG(n, args...) \
|
||||
do { \
|
||||
if (n <= CONFIG_MTD_DEBUG_VERBOSE) \
|
||||
printk(KERN_INFO args); \
|
||||
} while(0)
|
||||
#else /* CONFIG_MTD_DEBUG */
|
||||
#define DEBUG(n, args...) do { } while(0)
|
||||
|
||||
#endif /* CONFIG_MTD_DEBUG */
|
||||
|
||||
#endif /* __MTD_MTD_H__ */
|
||||
|
|
@ -2,10 +2,10 @@
|
|||
* linux/include/linux/mtd/nand.h
|
||||
*
|
||||
* Copyright (c) 2000 David Woodhouse <dwmw2@mvhi.com>
|
||||
* Steven J. Hill <sjhill@cotw.com>
|
||||
* Thomas Gleixner <gleixner@autronix.de>
|
||||
* Steven J. Hill <sjhill@realitydiluted.com>
|
||||
* Thomas Gleixner <tglx@linutronix.de>
|
||||
*
|
||||
* $Id: nand.h,v 1.7 2003/07/24 23:30:46 a0384864 Exp $
|
||||
* $Id: nand.h,v 1.68 2004/11/12 10:40:37 gleixner 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
|
||||
|
|
@ -24,7 +24,7 @@
|
|||
* 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
|
||||
* 10-29-2001 TG changed nand_chip structure to support
|
||||
* 10-29-2001 TG changed nand_chip structure to support
|
||||
* hardwarespecific function for accessing control lines
|
||||
* 02-21-2002 TG added support for different read/write adress and
|
||||
* ready/busy line access function
|
||||
|
|
@ -32,10 +32,68 @@
|
|||
* command delay times for different chips
|
||||
* 04-28-2002 TG OOB config defines moved from nand.c to avoid duplicate
|
||||
* defines in jffs2/wbuf.c
|
||||
* 08-07-2002 TG forced bad block location to byte 5 of OOB, even if
|
||||
* CONFIG_MTD_NAND_ECC_JFFS2 is not set
|
||||
* 08-10-2002 TG extensions to nand_chip structure to support HW-ECC
|
||||
*
|
||||
* 08-29-2002 tglx nand_chip structure: data_poi for selecting
|
||||
* internal / fs-driver buffer
|
||||
* support for 6byte/512byte hardware ECC
|
||||
* read_ecc, write_ecc extended for different oob-layout
|
||||
* oob layout selections: NAND_NONE_OOB, NAND_JFFS2_OOB,
|
||||
* NAND_YAFFS_OOB
|
||||
* 11-25-2002 tglx Added Manufacturer code FUJITSU, NATIONAL
|
||||
* Split manufacturer and device ID structures
|
||||
*
|
||||
* 02-08-2004 tglx added option field to nand structure for chip anomalities
|
||||
* 05-25-2004 tglx added bad block table support, ST-MICRO manufacturer id
|
||||
* update of nand_chip structure description
|
||||
*/
|
||||
#ifndef __LINUX_MTD_NAND_H
|
||||
#define __LINUX_MTD_NAND_H
|
||||
|
||||
#include <linux/mtd/compat.h>
|
||||
#include <linux/mtd/mtd.h>
|
||||
|
||||
struct mtd_info;
|
||||
/* Scan and identify a NAND device */
|
||||
extern int nand_scan (struct mtd_info *mtd, int max_chips);
|
||||
/* Free resources held by the NAND device */
|
||||
extern void nand_release (struct mtd_info *mtd);
|
||||
|
||||
/* Read raw data from the device without ECC */
|
||||
extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen);
|
||||
|
||||
|
||||
/* The maximum number of NAND chips in an array */
|
||||
#define NAND_MAX_CHIPS 8
|
||||
|
||||
/* This constant declares the max. oobsize / page, which
|
||||
* is supported now. If you add a chip with bigger oobsize/page
|
||||
* adjust this accordingly.
|
||||
*/
|
||||
#define NAND_MAX_OOBSIZE 64
|
||||
|
||||
/*
|
||||
* Constants for hardware specific CLE/ALE/NCE function
|
||||
*/
|
||||
/* Select the chip by setting nCE to low */
|
||||
#define NAND_CTL_SETNCE 1
|
||||
/* Deselect the chip by setting nCE to high */
|
||||
#define NAND_CTL_CLRNCE 2
|
||||
/* Select the command latch by setting CLE to high */
|
||||
#define NAND_CTL_SETCLE 3
|
||||
/* Deselect the command latch by setting CLE to low */
|
||||
#define NAND_CTL_CLRCLE 4
|
||||
/* Select the address latch by setting ALE to high */
|
||||
#define NAND_CTL_SETALE 5
|
||||
/* Deselect the address latch by setting ALE to low */
|
||||
#define NAND_CTL_CLRALE 6
|
||||
/* Set write protection by setting WP to high. Not used! */
|
||||
#define NAND_CTL_SETWP 7
|
||||
/* Clear write protection by setting WP to low. Not used! */
|
||||
#define NAND_CTL_CLRWP 8
|
||||
|
||||
/*
|
||||
* Standard NAND flash commands
|
||||
*/
|
||||
|
|
@ -45,12 +103,104 @@
|
|||
#define NAND_CMD_READOOB 0x50
|
||||
#define NAND_CMD_ERASE1 0x60
|
||||
#define NAND_CMD_STATUS 0x70
|
||||
#define NAND_CMD_STATUS_MULTI 0x71
|
||||
#define NAND_CMD_SEQIN 0x80
|
||||
#define NAND_CMD_READID 0x90
|
||||
#define NAND_CMD_ERASE2 0xd0
|
||||
#define NAND_CMD_RESET 0xff
|
||||
|
||||
/* Extended commands for large page devices */
|
||||
#define NAND_CMD_READSTART 0x30
|
||||
#define NAND_CMD_CACHEDPROG 0x15
|
||||
|
||||
/* Status bits */
|
||||
#define NAND_STATUS_FAIL 0x01
|
||||
#define NAND_STATUS_FAIL_N1 0x02
|
||||
#define NAND_STATUS_TRUE_READY 0x20
|
||||
#define NAND_STATUS_READY 0x40
|
||||
#define NAND_STATUS_WP 0x80
|
||||
|
||||
/*
|
||||
* Constants for ECC_MODES
|
||||
*/
|
||||
|
||||
/* No ECC. Usage is not recommended ! */
|
||||
#define NAND_ECC_NONE 0
|
||||
/* Software ECC 3 byte ECC per 256 Byte data */
|
||||
#define NAND_ECC_SOFT 1
|
||||
/* Hardware ECC 3 byte ECC per 256 Byte data */
|
||||
#define NAND_ECC_HW3_256 2
|
||||
/* Hardware ECC 3 byte ECC per 512 Byte data */
|
||||
#define NAND_ECC_HW3_512 3
|
||||
/* Hardware ECC 3 byte ECC per 512 Byte data */
|
||||
#define NAND_ECC_HW6_512 4
|
||||
/* Hardware ECC 8 byte ECC per 512 Byte data */
|
||||
#define NAND_ECC_HW8_512 6
|
||||
/* Hardware ECC 12 byte ECC per 2048 Byte data */
|
||||
#define NAND_ECC_HW12_2048 7
|
||||
|
||||
/*
|
||||
* Constants for Hardware ECC
|
||||
*/
|
||||
/* Reset Hardware ECC for read */
|
||||
#define NAND_ECC_READ 0
|
||||
/* Reset Hardware ECC for write */
|
||||
#define NAND_ECC_WRITE 1
|
||||
/* Enable Hardware ECC before syndrom is read back from flash */
|
||||
#define NAND_ECC_READSYN 2
|
||||
|
||||
/* Option constants for bizarre disfunctionality and real
|
||||
* features
|
||||
*/
|
||||
/* Chip can not auto increment pages */
|
||||
#define NAND_NO_AUTOINCR 0x00000001
|
||||
/* Buswitdh is 16 bit */
|
||||
#define NAND_BUSWIDTH_16 0x00000002
|
||||
/* Device supports partial programming without padding */
|
||||
#define NAND_NO_PADDING 0x00000004
|
||||
/* Chip has cache program function */
|
||||
#define NAND_CACHEPRG 0x00000008
|
||||
/* Chip has copy back function */
|
||||
#define NAND_COPYBACK 0x00000010
|
||||
/* AND Chip which has 4 banks and a confusing page / block
|
||||
* assignment. See Renesas datasheet for further information */
|
||||
#define NAND_IS_AND 0x00000020
|
||||
/* Chip has a array of 4 pages which can be read without
|
||||
* additional ready /busy waits */
|
||||
#define NAND_4PAGE_ARRAY 0x00000040
|
||||
|
||||
/* Options valid for Samsung large page devices */
|
||||
#define NAND_SAMSUNG_LP_OPTIONS \
|
||||
(NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK)
|
||||
|
||||
/* Macros to identify the above */
|
||||
#define NAND_CANAUTOINCR(chip) (!(chip->options & NAND_NO_AUTOINCR))
|
||||
#define NAND_MUST_PAD(chip) (!(chip->options & NAND_NO_PADDING))
|
||||
#define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG))
|
||||
#define NAND_HAS_COPYBACK(chip) ((chip->options & NAND_COPYBACK))
|
||||
|
||||
/* Mask to zero out the chip options, which come from the id table */
|
||||
#define NAND_CHIPOPTIONS_MSK (0x0000ffff & ~NAND_NO_AUTOINCR)
|
||||
|
||||
/* Non chip related options */
|
||||
/* Use a flash based bad block table. This option is passed to the
|
||||
* default bad block table function. */
|
||||
#define NAND_USE_FLASH_BBT 0x00010000
|
||||
/* The hw ecc generator provides a syndrome instead a ecc value on read
|
||||
* This can only work if we have the ecc bytes directly behind the
|
||||
* data bytes. Applies for DOC and AG-AND Renesas HW Reed Solomon generators */
|
||||
#define NAND_HWECC_SYNDROME 0x00020000
|
||||
|
||||
|
||||
/* Options set by nand scan */
|
||||
/* Nand scan has allocated oob_buf */
|
||||
#define NAND_OOBBUF_ALLOC 0x40000000
|
||||
/* Nand scan has allocated data_buf */
|
||||
#define NAND_DATABUF_ALLOC 0x80000000
|
||||
|
||||
|
||||
/*
|
||||
* nand_state_t - chip states
|
||||
* Enumeration for NAND flash chip state
|
||||
*/
|
||||
typedef enum {
|
||||
|
|
@ -58,71 +208,138 @@ typedef enum {
|
|||
FL_READING,
|
||||
FL_WRITING,
|
||||
FL_ERASING,
|
||||
FL_SYNCING
|
||||
FL_SYNCING,
|
||||
FL_CACHEDPRG,
|
||||
} nand_state_t;
|
||||
|
||||
/* Keep gcc happy */
|
||||
struct nand_chip;
|
||||
|
||||
/*
|
||||
* NAND Private Flash Chip Data
|
||||
*
|
||||
* Structure overview:
|
||||
*
|
||||
* IO_ADDR - address to access the 8 I/O lines of the flash device
|
||||
*
|
||||
* hwcontrol - hardwarespecific function for accesing control-lines
|
||||
*
|
||||
* dev_ready - hardwarespecific function for accesing device ready/busy line
|
||||
*
|
||||
* chip_lock - spinlock used to protect access to this structure
|
||||
*
|
||||
* wq - wait queue to sleep on if a NAND operation is in progress
|
||||
*
|
||||
* state - give the current state of the NAND device
|
||||
*
|
||||
* page_shift - number of address bits in a page (column address bits)
|
||||
*
|
||||
* data_buf - data buffer passed to/from MTD user modules
|
||||
*
|
||||
* data_cache - data cache for redundant page access and shadow for
|
||||
* ECC failure
|
||||
*
|
||||
* ecc_code_buf - used only for holding calculated or read ECCs for
|
||||
* a page read or written when ECC is in use
|
||||
*
|
||||
* reserved - padding to make structure fall on word boundary if
|
||||
* when ECC is in use
|
||||
#if 0
|
||||
/**
|
||||
* struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independend devices
|
||||
* @lock: protection lock
|
||||
* @active: the mtd device which holds the controller currently
|
||||
*/
|
||||
struct Nand {
|
||||
char floor, chip;
|
||||
unsigned long curadr;
|
||||
unsigned char curmode;
|
||||
/* Also some erase/write/pipeline info when we get that far */
|
||||
struct nand_hw_control {
|
||||
spinlock_t lock;
|
||||
struct nand_chip *active;
|
||||
};
|
||||
#endif
|
||||
|
||||
/**
|
||||
* struct nand_chip - NAND Private Flash Chip Data
|
||||
* @IO_ADDR_R: [BOARDSPECIFIC] address to read the 8 I/O lines of the flash device
|
||||
* @IO_ADDR_W: [BOARDSPECIFIC] address to write the 8 I/O lines of the flash device
|
||||
* @read_byte: [REPLACEABLE] read one byte from the chip
|
||||
* @write_byte: [REPLACEABLE] write one byte to the chip
|
||||
* @read_word: [REPLACEABLE] read one word from the chip
|
||||
* @write_word: [REPLACEABLE] write one word to the chip
|
||||
* @write_buf: [REPLACEABLE] write data from the buffer to the chip
|
||||
* @read_buf: [REPLACEABLE] read data from the chip into the buffer
|
||||
* @verify_buf: [REPLACEABLE] verify buffer contents against the chip data
|
||||
* @select_chip: [REPLACEABLE] select chip nr
|
||||
* @block_bad: [REPLACEABLE] check, if the block is bad
|
||||
* @block_markbad: [REPLACEABLE] mark the block bad
|
||||
* @hwcontrol: [BOARDSPECIFIC] hardwarespecific function for accesing control-lines
|
||||
* @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accesing device ready/busy line
|
||||
* If set to NULL no access to ready/busy is available and the ready/busy information
|
||||
* is read from the chip status register
|
||||
* @cmdfunc: [REPLACEABLE] hardwarespecific function for writing commands to the chip
|
||||
* @waitfunc: [REPLACEABLE] hardwarespecific function for wait on ready
|
||||
* @calculate_ecc: [REPLACEABLE] function for ecc calculation or readback from ecc hardware
|
||||
* @correct_data: [REPLACEABLE] function for ecc correction, matching to ecc generator (sw/hw)
|
||||
* @enable_hwecc: [BOARDSPECIFIC] function to enable (reset) hardware ecc generator. Must only
|
||||
* be provided if a hardware ECC is available
|
||||
* @erase_cmd: [INTERN] erase command write function, selectable due to AND support
|
||||
* @scan_bbt: [REPLACEABLE] function to scan bad block table
|
||||
* @eccmode: [BOARDSPECIFIC] mode of ecc, see defines
|
||||
* @eccsize: [INTERN] databytes used per ecc-calculation
|
||||
* @eccbytes: [INTERN] number of ecc bytes per ecc-calculation step
|
||||
* @eccsteps: [INTERN] number of ecc calculation steps per page
|
||||
* @chip_delay: [BOARDSPECIFIC] chip dependent delay for transfering data from array to read regs (tR)
|
||||
* @chip_lock: [INTERN] spinlock used to protect access to this structure and the chip
|
||||
* @wq: [INTERN] wait queue to sleep on if a NAND operation is in progress
|
||||
* @state: [INTERN] the current state of the NAND device
|
||||
* @page_shift: [INTERN] number of address bits in a page (column address bits)
|
||||
* @phys_erase_shift: [INTERN] number of address bits in a physical eraseblock
|
||||
* @bbt_erase_shift: [INTERN] number of address bits in a bbt entry
|
||||
* @chip_shift: [INTERN] number of address bits in one chip
|
||||
* @data_buf: [INTERN] internal buffer for one page + oob
|
||||
* @oob_buf: [INTERN] oob buffer for one eraseblock
|
||||
* @oobdirty: [INTERN] indicates that oob_buf must be reinitialized
|
||||
* @data_poi: [INTERN] pointer to a data buffer
|
||||
* @options: [BOARDSPECIFIC] various chip options. They can partly be set to inform nand_scan about
|
||||
* special functionality. See the defines for further explanation
|
||||
* @badblockpos: [INTERN] position of the bad block marker in the oob area
|
||||
* @numchips: [INTERN] number of physical chips
|
||||
* @chipsize: [INTERN] the size of one chip for multichip arrays
|
||||
* @pagemask: [INTERN] page number mask = number of (pages / chip) - 1
|
||||
* @pagebuf: [INTERN] holds the pagenumber which is currently in data_buf
|
||||
* @autooob: [REPLACEABLE] the default (auto)placement scheme
|
||||
* @bbt: [INTERN] bad block table pointer
|
||||
* @bbt_td: [REPLACEABLE] bad block table descriptor for flash lookup
|
||||
* @bbt_md: [REPLACEABLE] bad block table mirror descriptor
|
||||
* @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial bad block scan
|
||||
* @controller: [OPTIONAL] a pointer to a hardware controller structure which is shared among multiple independend devices
|
||||
* @priv: [OPTIONAL] pointer to private chip date
|
||||
*/
|
||||
|
||||
struct nand_chip {
|
||||
void __iomem *IO_ADDR_R;
|
||||
void __iomem *IO_ADDR_W;
|
||||
|
||||
u_char (*read_byte)(struct mtd_info *mtd);
|
||||
void (*write_byte)(struct mtd_info *mtd, u_char byte);
|
||||
u16 (*read_word)(struct mtd_info *mtd);
|
||||
void (*write_word)(struct mtd_info *mtd, u16 word);
|
||||
|
||||
void (*write_buf)(struct mtd_info *mtd, const u_char *buf, int len);
|
||||
void (*read_buf)(struct mtd_info *mtd, u_char *buf, int len);
|
||||
int (*verify_buf)(struct mtd_info *mtd, const u_char *buf, int len);
|
||||
void (*select_chip)(struct mtd_info *mtd, int chip);
|
||||
int (*block_bad)(struct mtd_info *mtd, loff_t ofs, int getchip);
|
||||
int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
|
||||
void (*hwcontrol)(struct mtd_info *mtd, int cmd);
|
||||
int (*dev_ready)(struct mtd_info *mtd);
|
||||
void (*cmdfunc)(struct mtd_info *mtd, unsigned command, int column, int page_addr);
|
||||
int (*waitfunc)(struct mtd_info *mtd, struct nand_chip *this, int state);
|
||||
int (*calculate_ecc)(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
|
||||
int (*correct_data)(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
|
||||
void (*enable_hwecc)(struct mtd_info *mtd, int mode);
|
||||
void (*erase_cmd)(struct mtd_info *mtd, int page);
|
||||
int (*scan_bbt)(struct mtd_info *mtd);
|
||||
int eccmode;
|
||||
int eccsize;
|
||||
int eccbytes;
|
||||
int eccsteps;
|
||||
int chip_delay;
|
||||
#if 0
|
||||
spinlock_t chip_lock;
|
||||
wait_queue_head_t wq;
|
||||
nand_state_t state;
|
||||
#endif
|
||||
int page_shift;
|
||||
int phys_erase_shift;
|
||||
int bbt_erase_shift;
|
||||
int chip_shift;
|
||||
u_char *data_buf;
|
||||
u_char *data_cache;
|
||||
int cache_page;
|
||||
u_char ecc_code_buf[6];
|
||||
u_char reserved[2];
|
||||
char ChipID; /* Type of DiskOnChip */
|
||||
struct Nand *chips;
|
||||
int chipshift;
|
||||
char* chips_name;
|
||||
unsigned long erasesize;
|
||||
unsigned long mfr; /* Flash IDs - only one type of flash per device */
|
||||
unsigned long id;
|
||||
char* name;
|
||||
int numchips;
|
||||
char page256;
|
||||
char pageadrlen;
|
||||
unsigned long IO_ADDR; /* address to access the 8 I/O lines to the flash device */
|
||||
unsigned long totlen;
|
||||
uint oobblock; /* Size of OOB blocks (e.g. 512) */
|
||||
uint oobsize; /* Amount of OOB data per block (e.g. 16) */
|
||||
uint eccsize;
|
||||
int bus16;
|
||||
u_char *oob_buf;
|
||||
int oobdirty;
|
||||
u_char *data_poi;
|
||||
unsigned int options;
|
||||
int badblockpos;
|
||||
int numchips;
|
||||
unsigned long chipsize;
|
||||
int pagemask;
|
||||
int pagebuf;
|
||||
struct nand_oobinfo *autooob;
|
||||
uint8_t *bbt;
|
||||
struct nand_bbt_descr *bbt_td;
|
||||
struct nand_bbt_descr *bbt_md;
|
||||
struct nand_bbt_descr *badblock_pattern;
|
||||
struct nand_hw_control *controller;
|
||||
void *priv;
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
@ -130,71 +347,125 @@ struct nand_chip {
|
|||
*/
|
||||
#define NAND_MFR_TOSHIBA 0x98
|
||||
#define NAND_MFR_SAMSUNG 0xec
|
||||
#define NAND_MFR_FUJITSU 0x04
|
||||
#define NAND_MFR_NATIONAL 0x8f
|
||||
#define NAND_MFR_RENESAS 0x07
|
||||
#define NAND_MFR_STMICRO 0x20
|
||||
|
||||
/*
|
||||
* NAND Flash Device ID Structure
|
||||
/**
|
||||
* struct nand_flash_dev - 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.
|
||||
* @name: Identify the device type
|
||||
* @id: device ID code
|
||||
* @pagesize: Pagesize in bytes. Either 256 or 512 or 0
|
||||
* If the pagesize is 0, then the real pagesize
|
||||
* and the eraseize are determined from the
|
||||
* extended id bytes in the chip
|
||||
* @erasesize: Size of an erase block in the flash device.
|
||||
* @chipsize: Total chipsize in Mega Bytes
|
||||
* @options: Bitfield to store chip relevant options
|
||||
*/
|
||||
struct nand_flash_dev {
|
||||
char * name;
|
||||
int manufacture_id;
|
||||
int model_id;
|
||||
int chipshift;
|
||||
char page256;
|
||||
char pageadrlen;
|
||||
char *name;
|
||||
int id;
|
||||
unsigned long pagesize;
|
||||
unsigned long chipsize;
|
||||
unsigned long erasesize;
|
||||
int bus16;
|
||||
unsigned long options;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct nand_manufacturers - NAND Flash Manufacturer ID Structure
|
||||
* @name: Manufacturer name
|
||||
* @id: manufacturer ID code of device.
|
||||
*/
|
||||
struct nand_manufacturers {
|
||||
int id;
|
||||
char * name;
|
||||
};
|
||||
|
||||
extern struct nand_flash_dev nand_flash_ids[];
|
||||
extern struct nand_manufacturers nand_manuf_ids[];
|
||||
|
||||
/**
|
||||
* struct nand_bbt_descr - bad block table descriptor
|
||||
* @options: options for this descriptor
|
||||
* @pages: the page(s) where we find the bbt, used with option BBT_ABSPAGE
|
||||
* when bbt is searched, then we store the found bbts pages here.
|
||||
* Its an array and supports up to 8 chips now
|
||||
* @offs: offset of the pattern in the oob area of the page
|
||||
* @veroffs: offset of the bbt version counter in the oob are of the page
|
||||
* @version: version read from the bbt page during scan
|
||||
* @len: length of the pattern, if 0 no pattern check is performed
|
||||
* @maxblocks: maximum number of blocks to search for a bbt. This number of
|
||||
* blocks is reserved at the end of the device where the tables are
|
||||
* written.
|
||||
* @reserved_block_code: if non-0, this pattern denotes a reserved (rather than
|
||||
* bad) block in the stored bbt
|
||||
* @pattern: pattern to identify bad block table or factory marked good /
|
||||
* bad blocks, can be NULL, if len = 0
|
||||
*
|
||||
* Descriptor for the bad block table marker and the descriptor for the
|
||||
* pattern which identifies good and bad blocks. The assumption is made
|
||||
* that the pattern and the version count are always located in the oob area
|
||||
* of the first block.
|
||||
*/
|
||||
struct nand_bbt_descr {
|
||||
int options;
|
||||
int pages[NAND_MAX_CHIPS];
|
||||
int offs;
|
||||
int veroffs;
|
||||
uint8_t version[NAND_MAX_CHIPS];
|
||||
int len;
|
||||
int maxblocks;
|
||||
int reserved_block_code;
|
||||
uint8_t *pattern;
|
||||
};
|
||||
|
||||
/* Options for the bad block table descriptors */
|
||||
|
||||
/* The number of bits used per block in the bbt on the device */
|
||||
#define NAND_BBT_NRBITS_MSK 0x0000000F
|
||||
#define NAND_BBT_1BIT 0x00000001
|
||||
#define NAND_BBT_2BIT 0x00000002
|
||||
#define NAND_BBT_4BIT 0x00000004
|
||||
#define NAND_BBT_8BIT 0x00000008
|
||||
/* The bad block table is in the last good block of the device */
|
||||
#define NAND_BBT_LASTBLOCK 0x00000010
|
||||
/* The bbt is at the given page, else we must scan for the bbt */
|
||||
#define NAND_BBT_ABSPAGE 0x00000020
|
||||
/* The bbt is at the given page, else we must scan for the bbt */
|
||||
#define NAND_BBT_SEARCH 0x00000040
|
||||
/* bbt is stored per chip on multichip devices */
|
||||
#define NAND_BBT_PERCHIP 0x00000080
|
||||
/* bbt has a version counter at offset veroffs */
|
||||
#define NAND_BBT_VERSION 0x00000100
|
||||
/* Create a bbt if none axists */
|
||||
#define NAND_BBT_CREATE 0x00000200
|
||||
/* Search good / bad pattern through all pages of a block */
|
||||
#define NAND_BBT_SCANALLPAGES 0x00000400
|
||||
/* Scan block empty during good / bad block scan */
|
||||
#define NAND_BBT_SCANEMPTY 0x00000800
|
||||
/* Write bbt if neccecary */
|
||||
#define NAND_BBT_WRITE 0x00001000
|
||||
/* Read and write back block contents when writing bbt */
|
||||
#define NAND_BBT_SAVECONTENT 0x00002000
|
||||
/* Search good / bad pattern on the first and the second page */
|
||||
#define NAND_BBT_SCAN2NDPAGE 0x00004000
|
||||
|
||||
/* The maximum number of blocks to scan for a bbt */
|
||||
#define NAND_BBT_SCAN_MAXBLOCKS 4
|
||||
|
||||
extern int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd);
|
||||
extern int nand_update_bbt (struct mtd_info *mtd, loff_t offs);
|
||||
extern int nand_default_bbt (struct mtd_info *mtd);
|
||||
extern int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt);
|
||||
extern int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt);
|
||||
|
||||
/*
|
||||
* Constants for oob configuration
|
||||
*/
|
||||
#define NAND_NOOB_ECCPOS0 0
|
||||
#define NAND_NOOB_ECCPOS1 1
|
||||
#define NAND_NOOB_ECCPOS2 2
|
||||
#define NAND_NOOB_ECCPOS3 3
|
||||
#define NAND_NOOB_ECCPOS4 6
|
||||
#define NAND_NOOB_ECCPOS5 7
|
||||
#define NAND_NOOB_BADBPOS -1
|
||||
#define NAND_NOOB_ECCVPOS -1
|
||||
|
||||
#define NAND_JFFS2_OOB_ECCPOS0 0
|
||||
#define NAND_JFFS2_OOB_ECCPOS1 1
|
||||
#define NAND_JFFS2_OOB_ECCPOS2 2
|
||||
#define NAND_JFFS2_OOB_ECCPOS3 3
|
||||
#define NAND_JFFS2_OOB_ECCPOS4 6
|
||||
#define NAND_JFFS2_OOB_ECCPOS5 7
|
||||
#define NAND_JFFS2_OOB_BADBPOS 5
|
||||
#define NAND_JFFS2_OOB_ECCVPOS 4
|
||||
|
||||
#define NAND_JFFS2_OOB8_FSDAPOS 6
|
||||
#define NAND_JFFS2_OOB16_FSDAPOS 8
|
||||
#define NAND_JFFS2_OOB8_FSDALEN 2
|
||||
#define NAND_JFFS2_OOB16_FSDALEN 8
|
||||
|
||||
unsigned long nand_probe(unsigned long physadr);
|
||||
#define NAND_SMALL_BADBLOCK_POS 5
|
||||
#define NAND_LARGE_BADBLOCK_POS 0
|
||||
|
||||
#endif /* __LINUX_MTD_NAND_H */
|
||||
|
|
|
|||
|
|
@ -0,0 +1,30 @@
|
|||
/*
|
||||
* drivers/mtd/nand_ecc.h
|
||||
*
|
||||
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
|
||||
*
|
||||
* $Id: nand_ecc.h,v 1.4 2004/06/17 02:35:02 dbrown 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.
|
||||
*
|
||||
* This file is the header for the ECC algorithm.
|
||||
*/
|
||||
|
||||
#ifndef __MTD_NAND_ECC_H__
|
||||
#define __MTD_NAND_ECC_H__
|
||||
|
||||
struct mtd_info;
|
||||
|
||||
/*
|
||||
* Calculate 3 byte ECC code for 256 byte block
|
||||
*/
|
||||
int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
|
||||
|
||||
/*
|
||||
* Detect and correct a 1 bit error for 256 byte block
|
||||
*/
|
||||
int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
|
||||
|
||||
#endif /* __MTD_NAND_ECC_H__ */
|
||||
|
|
@ -49,6 +49,7 @@ static struct nand_flash_dev nand_flash_ids[] = {
|
|||
{"Samsung KM29W16000", NAND_MFR_SAMSUNG, 0xea, 21, 1, 2, 0x1000, 0},
|
||||
{"Samsung K9F5616Q0C", NAND_MFR_SAMSUNG, 0x45, 25, 0, 2, 0x4000, 1},
|
||||
{"Samsung K9K1216Q0C", NAND_MFR_SAMSUNG, 0x46, 26, 0, 3, 0x4000, 1},
|
||||
{"Samsung K9F1G08U0M", NAND_MFR_SAMSUNG, 0xf1, 27, 0, 2, 0, 0},
|
||||
{NULL,}
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,56 @@
|
|||
/*
|
||||
* (C) Copyright 2005
|
||||
* 2N Telekomunikace, a.s. <www.2n.cz>
|
||||
* Ladislav Michl <michl@2n.cz>
|
||||
*
|
||||
* See file CREDITS for list of people who contributed to this
|
||||
* project.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* 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 <linux_compat.h>
|
||||
#include <linux/mtd/mtd.h>
|
||||
#include <linux/mtd/nand.h>
|
||||
|
||||
typedef struct mtd_info nand_info_t;
|
||||
|
||||
extern int nand_curr_device;
|
||||
extern nand_info_t nand_info[];
|
||||
|
||||
static inline int nand_read(nand_info_t *info, ulong ofs, ulong *len, u_char *buf)
|
||||
{
|
||||
return info->read(info, ofs, *len, len, buf);
|
||||
}
|
||||
|
||||
static inline int nand_write(nand_info_t *info, ulong ofs, ulong *len, u_char *buf)
|
||||
{
|
||||
return info->write(info, ofs, *len, len, buf);
|
||||
}
|
||||
|
||||
static inline int nand_block_isbad(nand_info_t *info, ulong ofs)
|
||||
{
|
||||
return info->block_isbad(info, ofs);
|
||||
}
|
||||
|
||||
static inline int nand_erase(nand_info_t *info, ulong off, ulong size)
|
||||
{
|
||||
return 0; /* FIXME */
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue