diff options
Diffstat (limited to 'target/linux/patches/2.6.30.4/yaffs2.patch')
| -rw-r--r-- | target/linux/patches/2.6.30.4/yaffs2.patch | 15066 |
1 files changed, 15066 insertions, 0 deletions
diff --git a/target/linux/patches/2.6.30.4/yaffs2.patch b/target/linux/patches/2.6.30.4/yaffs2.patch new file mode 100644 index 000000000..a19ab9c84 --- /dev/null +++ b/target/linux/patches/2.6.30.4/yaffs2.patch @@ -0,0 +1,15066 @@ +diff -Nur linux-2.6.30.orig/fs/Kconfig linux-2.6.30/fs/Kconfig +--- linux-2.6.30.orig/fs/Kconfig 2009-06-10 05:05:27.000000000 +0200 ++++ linux-2.6.30/fs/Kconfig 2009-06-11 09:21:04.000000000 +0200 +@@ -162,6 +162,10 @@ + source "fs/befs/Kconfig" + source "fs/bfs/Kconfig" + source "fs/efs/Kconfig" ++ ++# Patched by YAFFS ++source "fs/yaffs2/Kconfig" ++ + source "fs/jffs2/Kconfig" + # UBIFS File system configuration + source "fs/ubifs/Kconfig" +diff -Nur linux-2.6.30.orig/fs/Makefile linux-2.6.30/fs/Makefile +--- linux-2.6.30.orig/fs/Makefile 2009-06-10 05:05:27.000000000 +0200 ++++ linux-2.6.30/fs/Makefile 2009-06-11 09:21:31.000000000 +0200 +@@ -124,3 +124,4 @@ + obj-$(CONFIG_BTRFS_FS) += btrfs/ + obj-$(CONFIG_GFS2_FS) += gfs2/ + obj-$(CONFIG_EXOFS_FS) += exofs/ ++obj-$(CONFIG_YAFFS_FS) += yaffs2/ +diff -Nur linux-2.6.30.orig/fs/Makefile.pre.yaffs linux-2.6.30/fs/Makefile.pre.yaffs +--- linux-2.6.30.orig/fs/Makefile.pre.yaffs 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/Makefile.pre.yaffs 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,126 @@ ++# ++# Makefile for the Linux filesystems. ++# ++# 14 Sep 2000, Christoph Hellwig <hch@infradead.org> ++# Rewritten to use lists instead of if-statements. ++# ++ ++obj-y := open.o read_write.o file_table.o super.o \ ++ char_dev.o stat.o exec.o pipe.o namei.o fcntl.o \ ++ ioctl.o readdir.o select.o fifo.o dcache.o inode.o \ ++ attr.o bad_inode.o file.o filesystems.o namespace.o \ ++ seq_file.o xattr.o libfs.o fs-writeback.o \ ++ pnode.o drop_caches.o splice.o sync.o utimes.o \ ++ stack.o ++ ++ifeq ($(CONFIG_BLOCK),y) ++obj-y += buffer.o bio.o block_dev.o direct-io.o mpage.o ioprio.o ++else ++obj-y += no-block.o ++endif ++ ++obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o ++obj-y += notify/ ++obj-$(CONFIG_EPOLL) += eventpoll.o ++obj-$(CONFIG_ANON_INODES) += anon_inodes.o ++obj-$(CONFIG_SIGNALFD) += signalfd.o ++obj-$(CONFIG_TIMERFD) += timerfd.o ++obj-$(CONFIG_EVENTFD) += eventfd.o ++obj-$(CONFIG_AIO) += aio.o ++obj-$(CONFIG_FILE_LOCKING) += locks.o ++obj-$(CONFIG_COMPAT) += compat.o compat_ioctl.o ++ ++nfsd-$(CONFIG_NFSD) := nfsctl.o ++obj-y += $(nfsd-y) $(nfsd-m) ++ ++obj-$(CONFIG_BINFMT_AOUT) += binfmt_aout.o ++obj-$(CONFIG_BINFMT_EM86) += binfmt_em86.o ++obj-$(CONFIG_BINFMT_MISC) += binfmt_misc.o ++ ++# binfmt_script is always there ++obj-y += binfmt_script.o ++ ++obj-$(CONFIG_BINFMT_ELF) += binfmt_elf.o ++obj-$(CONFIG_COMPAT_BINFMT_ELF) += compat_binfmt_elf.o ++obj-$(CONFIG_BINFMT_ELF_FDPIC) += binfmt_elf_fdpic.o ++obj-$(CONFIG_BINFMT_SOM) += binfmt_som.o ++obj-$(CONFIG_BINFMT_FLAT) += binfmt_flat.o ++ ++obj-$(CONFIG_FS_MBCACHE) += mbcache.o ++obj-$(CONFIG_FS_POSIX_ACL) += posix_acl.o xattr_acl.o ++obj-$(CONFIG_NFS_COMMON) += nfs_common/ ++obj-$(CONFIG_GENERIC_ACL) += generic_acl.o ++ ++obj-$(CONFIG_QUOTA) += dquot.o ++obj-$(CONFIG_QFMT_V1) += quota_v1.o ++obj-$(CONFIG_QFMT_V2) += quota_v2.o ++obj-$(CONFIG_QUOTA_TREE) += quota_tree.o ++obj-$(CONFIG_QUOTACTL) += quota.o ++ ++obj-$(CONFIG_PROC_FS) += proc/ ++obj-y += partitions/ ++obj-$(CONFIG_SYSFS) += sysfs/ ++obj-$(CONFIG_CONFIGFS_FS) += configfs/ ++obj-y += devpts/ ++ ++obj-$(CONFIG_PROFILING) += dcookies.o ++obj-$(CONFIG_DLM) += dlm/ ++ ++# Do not add any filesystems before this line ++obj-$(CONFIG_REISERFS_FS) += reiserfs/ ++obj-$(CONFIG_EXT3_FS) += ext3/ # Before ext2 so root fs can be ext3 ++obj-$(CONFIG_EXT2_FS) += ext2/ ++# We place ext4 after ext2 so plain ext2 root fs's are mounted using ext2 ++# unless explicitly requested by rootfstype ++obj-$(CONFIG_EXT4_FS) += ext4/ ++obj-$(CONFIG_JBD) += jbd/ ++obj-$(CONFIG_JBD2) += jbd2/ ++obj-$(CONFIG_CRAMFS) += cramfs/ ++obj-$(CONFIG_SQUASHFS) += squashfs/ ++obj-y += ramfs/ ++obj-$(CONFIG_HUGETLBFS) += hugetlbfs/ ++obj-$(CONFIG_CODA_FS) += coda/ ++obj-$(CONFIG_MINIX_FS) += minix/ ++obj-$(CONFIG_FAT_FS) += fat/ ++obj-$(CONFIG_BFS_FS) += bfs/ ++obj-$(CONFIG_ISO9660_FS) += isofs/ ++obj-$(CONFIG_HFSPLUS_FS) += hfsplus/ # Before hfs to find wrapped HFS+ ++obj-$(CONFIG_HFS_FS) += hfs/ ++obj-$(CONFIG_ECRYPT_FS) += ecryptfs/ ++obj-$(CONFIG_VXFS_FS) += freevxfs/ ++obj-$(CONFIG_NFS_FS) += nfs/ ++obj-$(CONFIG_EXPORTFS) += exportfs/ ++obj-$(CONFIG_NFSD) += nfsd/ ++obj-$(CONFIG_LOCKD) += lockd/ ++obj-$(CONFIG_NLS) += nls/ ++obj-$(CONFIG_SYSV_FS) += sysv/ ++obj-$(CONFIG_SMB_FS) += smbfs/ ++obj-$(CONFIG_CIFS) += cifs/ ++obj-$(CONFIG_NCP_FS) += ncpfs/ ++obj-$(CONFIG_HPFS_FS) += hpfs/ ++obj-$(CONFIG_NTFS_FS) += ntfs/ ++obj-$(CONFIG_UFS_FS) += ufs/ ++obj-$(CONFIG_EFS_FS) += efs/ ++obj-$(CONFIG_JFFS2_FS) += jffs2/ ++obj-$(CONFIG_UBIFS_FS) += ubifs/ ++obj-$(CONFIG_AFFS_FS) += affs/ ++obj-$(CONFIG_ROMFS_FS) += romfs/ ++obj-$(CONFIG_QNX4FS_FS) += qnx4/ ++obj-$(CONFIG_AUTOFS_FS) += autofs/ ++obj-$(CONFIG_AUTOFS4_FS) += autofs4/ ++obj-$(CONFIG_ADFS_FS) += adfs/ ++obj-$(CONFIG_FUSE_FS) += fuse/ ++obj-$(CONFIG_UDF_FS) += udf/ ++obj-$(CONFIG_SUN_OPENPROMFS) += openpromfs/ ++obj-$(CONFIG_OMFS_FS) += omfs/ ++obj-$(CONFIG_JFS_FS) += jfs/ ++obj-$(CONFIG_XFS_FS) += xfs/ ++obj-$(CONFIG_9P_FS) += 9p/ ++obj-$(CONFIG_AFS_FS) += afs/ ++obj-$(CONFIG_BEFS_FS) += befs/ ++obj-$(CONFIG_HOSTFS) += hostfs/ ++obj-$(CONFIG_HPPFS) += hppfs/ ++obj-$(CONFIG_DEBUG_FS) += debugfs/ ++obj-$(CONFIG_OCFS2_FS) += ocfs2/ ++obj-$(CONFIG_BTRFS_FS) += btrfs/ ++obj-$(CONFIG_GFS2_FS) += gfs2/ +diff -Nur linux-2.6.30.orig/fs/yaffs2/devextras.h linux-2.6.30/fs/yaffs2/devextras.h +--- linux-2.6.30.orig/fs/yaffs2/devextras.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/yaffs2/devextras.h 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,196 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++/* ++ * This file is just holds extra declarations of macros that would normally ++ * be providesd in the Linux kernel. These macros have been written from ++ * scratch but are functionally equivalent to the Linux ones. ++ * ++ */ ++ ++#ifndef __EXTRAS_H__ ++#define __EXTRAS_H__ ++ ++ ++#if !(defined __KERNEL__) ++ ++/* Definition of types */ ++typedef unsigned char __u8; ++typedef unsigned short __u16; ++typedef unsigned __u32; ++ ++#endif ++ ++/* ++ * This is a simple doubly linked list implementation that matches the ++ * way the Linux kernel doubly linked list implementation works. ++ */ ++ ++struct ylist_head { ++ struct ylist_head *next; /* next in chain */ ++ struct ylist_head *prev; /* previous in chain */ ++}; ++ ++ ++/* Initialise a static list */ ++#define YLIST_HEAD(name) \ ++struct ylist_head name = { &(name), &(name)} ++ ++ ++ ++/* Initialise a list head to an empty list */ ++#define YINIT_LIST_HEAD(p) \ ++do { \ ++ (p)->next = (p);\ ++ (p)->prev = (p); \ ++} while (0) ++ ++ ++/* Add an element to a list */ ++static __inline__ void ylist_add(struct ylist_head *newEntry, ++ struct ylist_head *list) ++{ ++ struct ylist_head *listNext = list->next; ++ ++ list->next = newEntry; ++ newEntry->prev = list; ++ newEntry->next = listNext; ++ listNext->prev = newEntry; ++ ++} ++ ++static __inline__ void ylist_add_tail(struct ylist_head *newEntry, ++ struct ylist_head *list) ++{ ++ struct ylist_head *listPrev = list->prev; ++ ++ list->prev = newEntry; ++ newEntry->next = list; ++ newEntry->prev = listPrev; ++ listPrev->next = newEntry; ++ ++} ++ ++ ++/* Take an element out of its current list, with or without ++ * reinitialising the links.of the entry*/ ++static __inline__ void ylist_del(struct ylist_head *entry) ++{ ++ struct ylist_head *listNext = entry->next; ++ struct ylist_head *listPrev = entry->prev; ++ ++ listNext->prev = listPrev; ++ listPrev->next = listNext; ++ ++} ++ ++static __inline__ void ylist_del_init(struct ylist_head *entry) ++{ ++ ylist_del(entry); ++ entry->next = entry->prev = entry; ++} ++ ++ ++/* Test if the list is empty */ ++static __inline__ int ylist_empty(struct ylist_head *entry) ++{ ++ return (entry->next == entry); ++} ++ ++ ++/* ylist_entry takes a pointer to a list entry and offsets it to that ++ * we can find a pointer to the object it is embedded in. ++ */ ++ ++ ++#define ylist_entry(entry, type, member) \ ++ ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) ++ ++ ++/* ylist_for_each and list_for_each_safe iterate over lists. ++ * ylist_for_each_safe uses temporary storage to make the list delete safe ++ */ ++ ++#define ylist_for_each(itervar, list) \ ++ for (itervar = (list)->next; itervar != (list); itervar = itervar->next) ++ ++#define ylist_for_each_safe(itervar, saveVar, list) \ ++ for (itervar = (list)->next, saveVar = (list)->next->next; \ ++ itervar != (list); itervar = saveVar, saveVar = saveVar->next) ++ ++ ++#if !(defined __KERNEL__) ++ ++ ++#ifndef WIN32 ++#include <sys/stat.h> ++#endif ++ ++ ++#ifdef CONFIG_YAFFS_PROVIDE_DEFS ++/* File types */ ++ ++ ++#define DT_UNKNOWN 0 ++#define DT_FIFO 1 ++#define DT_CHR 2 ++#define DT_DIR 4 ++#define DT_BLK 6 ++#define DT_REG 8 ++#define DT_LNK 10 ++#define DT_SOCK 12 ++#define DT_WHT 14 ++ ++ ++#ifndef WIN32 ++#include <sys/stat.h> ++#endif ++ ++/* ++ * Attribute flags. These should be or-ed together to figure out what ++ * has been changed! ++ */ ++#define ATTR_MODE 1 ++#define ATTR_UID 2 ++#define ATTR_GID 4 ++#define ATTR_SIZE 8 ++#define ATTR_ATIME 16 ++#define ATTR_MTIME 32 ++#define ATTR_CTIME 64 ++ ++struct iattr { ++ unsigned int ia_valid; ++ unsigned ia_mode; ++ unsigned ia_uid; ++ unsigned ia_gid; ++ unsigned ia_size; ++ unsigned ia_atime; ++ unsigned ia_mtime; ++ unsigned ia_ctime; ++ unsigned int ia_attr_flags; ++}; ++ ++#endif ++ ++#else ++ ++#include <linux/types.h> ++#include <linux/fs.h> ++#include <linux/stat.h> ++ ++#endif ++ ++ ++#endif +diff -Nur linux-2.6.30.orig/fs/yaffs2/Kconfig linux-2.6.30/fs/yaffs2/Kconfig +--- linux-2.6.30.orig/fs/yaffs2/Kconfig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/yaffs2/Kconfig 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,156 @@ ++# ++# YAFFS file system configurations ++# ++ ++config YAFFS_FS ++ tristate "YAFFS2 file system support" ++ default n ++ depends on MTD_BLOCK ++ select YAFFS_YAFFS1 ++ select YAFFS_YAFFS2 ++ help ++ YAFFS2, or Yet Another Flash Filing System, is a filing system ++ optimised for NAND Flash chips. ++ ++ To compile the YAFFS2 file system support as a module, choose M ++ here: the module will be called yaffs2. ++ ++ If unsure, say N. ++ ++ Further information on YAFFS2 is available at ++ <http://www.aleph1.co.uk/yaffs/>. ++ ++config YAFFS_YAFFS1 ++ bool "512 byte / page devices" ++ depends on YAFFS_FS ++ default y ++ help ++ Enable YAFFS1 support -- yaffs for 512 byte / page devices ++ ++ Not needed for 2K-page devices. ++ ++ If unsure, say Y. ++ ++config YAFFS_9BYTE_TAGS ++ bool "Use older-style on-NAND data format with pageStatus byte" ++ depends on YAFFS_YAFFS1 ++ default n ++ help ++ ++ Older-style on-NAND data format has a "pageStatus" byte to record ++ chunk/page state. This byte is zero when the page is discarded. ++ Choose this option if you have existing on-NAND data using this ++ format that you need to continue to support. New data written ++ also uses the older-style format. Note: Use of this option ++ generally requires that MTD's oob layout be adjusted to use the ++ older-style format. See notes on tags formats and MTD versions ++ in yaffs_mtdif1.c. ++ ++ If unsure, say N. ++ ++config YAFFS_DOES_ECC ++ bool "Lets Yaffs do its own ECC" ++ depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS ++ default n ++ help ++ This enables Yaffs to use its own ECC functions instead of using ++ the ones from the generic MTD-NAND driver. ++ ++ If unsure, say N. ++ ++config YAFFS_ECC_WRONG_ORDER ++ bool "Use the same ecc byte order as Steven Hill's nand_ecc.c" ++ depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS ++ default n ++ help ++ This makes yaffs_ecc.c use the same ecc byte order as Steven ++ Hill's nand_ecc.c. If not set, then you get the same ecc byte ++ order as SmartMedia. ++ ++ If unsure, say N. ++ ++config YAFFS_YAFFS2 ++ bool "2048 byte (or larger) / page devices" ++ depends on YAFFS_FS ++ default y ++ help ++ Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices ++ ++ If unsure, say Y. ++ ++config YAFFS_AUTO_YAFFS2 ++ bool "Autoselect yaffs2 format" ++ depends on YAFFS_YAFFS2 ++ default y ++ help ++ Without this, you need to explicitely use yaffs2 as the file ++ system type. With this, you can say "yaffs" and yaffs or yaffs2 ++ will be used depending on the device page size (yaffs on ++ 512-byte page devices, yaffs2 on 2K page devices). ++ ++ If unsure, say Y. ++ ++config YAFFS_DISABLE_LAZY_LOAD ++ bool "Disable lazy loading" ++ depends on YAFFS_YAFFS2 ++ default n ++ help ++ "Lazy loading" defers loading file details until they are ++ required. This saves mount time, but makes the first look-up ++ a bit longer. ++ ++ Lazy loading will only happen if enabled by this option being 'n' ++ and if the appropriate tags are available, else yaffs2 will ++ automatically fall back to immediate loading and do the right ++ thing. ++ ++ Lazy laoding will be required by checkpointing. ++ ++ Setting this to 'y' will disable lazy loading. ++ ++ If unsure, say N. ++ ++ ++config YAFFS_DISABLE_WIDE_TNODES ++ bool "Turn off wide tnodes" ++ depends on YAFFS_FS ++ default n ++ help ++ Wide tnodes are only used for NAND arrays >=32MB for 512-byte ++ page devices and >=128MB for 2k page devices. They use slightly ++ more RAM but are faster since they eliminate chunk group ++ searching. ++ ++ Setting this to 'y' will force tnode width to 16 bits and save ++ memory but make large arrays slower. ++ ++ If unsure, say N. ++ ++config YAFFS_ALWAYS_CHECK_CHUNK_ERASED ++ bool "Force chunk erase check" ++ depends on YAFFS_FS ++ default n ++ help ++ Normally YAFFS only checks chunks before writing until an erased ++ chunk is found. This helps to detect any partially written ++ chunks that might have happened due to power loss. ++ ++ Enabling this forces on the test that chunks are erased in flash ++ before writing to them. This takes more time but is potentially ++ a bit more secure. ++ ++ Suggest setting Y during development and ironing out driver ++ issues etc. Suggest setting to N if you want faster writing. ++ ++ If unsure, say Y. ++ ++config YAFFS_SHORT_NAMES_IN_RAM ++ bool "Cache short names in RAM" ++ depends on YAFFS_FS ++ default y ++ help ++ If this config is set, then short names are stored with the ++ yaffs_Object. This costs an extra 16 bytes of RAM per object, ++ but makes look-ups faster. ++ ++ If unsure, say Y. +diff -Nur linux-2.6.30.orig/fs/yaffs2/Makefile linux-2.6.30/fs/yaffs2/Makefile +--- linux-2.6.30.orig/fs/yaffs2/Makefile 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/yaffs2/Makefile 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,10 @@ ++# ++# Makefile for the linux YAFFS filesystem routines. ++# ++ ++obj-$(CONFIG_YAFFS_FS) += yaffs.o ++ ++yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o ++yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o ++yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o ++yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o +diff -Nur linux-2.6.30.orig/fs/yaffs2/moduleconfig.h linux-2.6.30/fs/yaffs2/moduleconfig.h +--- linux-2.6.30.orig/fs/yaffs2/moduleconfig.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/yaffs2/moduleconfig.h 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,65 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Martin Fouts <Martin.Fouts@palmsource.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_CONFIG_H__ ++#define __YAFFS_CONFIG_H__ ++ ++#ifdef YAFFS_OUT_OF_TREE ++ ++/* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */ ++#define CONFIG_YAFFS_FS ++#define CONFIG_YAFFS_YAFFS1 ++#define CONFIG_YAFFS_YAFFS2 ++ ++/* These options are independent of each other. Select those that matter. */ ++ ++/* Default: Not selected */ ++/* Meaning: Yaffs does its own ECC, rather than using MTD ECC */ ++/* #define CONFIG_YAFFS_DOES_ECC */ ++ ++/* Default: Not selected */ ++/* Meaning: ECC byte order is 'wrong'. Only meaningful if */ ++/* CONFIG_YAFFS_DOES_ECC is set */ ++/* #define CONFIG_YAFFS_ECC_WRONG_ORDER */ ++ ++/* Default: Selected */ ++/* Meaning: Disables testing whether chunks are erased before writing to them*/ ++#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK ++ ++/* Default: Selected */ ++/* Meaning: Cache short names, taking more RAM, but faster look-ups */ ++#define CONFIG_YAFFS_SHORT_NAMES_IN_RAM ++ ++/* Default: 10 */ ++/* Meaning: set the count of blocks to reserve for checkpointing */ ++#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10 ++ ++/* ++Older-style on-NAND data format has a "pageStatus" byte to record ++chunk/page state. This byte is zeroed when the page is discarded. ++Choose this option if you have existing on-NAND data in this format ++that you need to continue to support. New data written also uses the ++older-style format. ++Note: Use of this option generally requires that MTD's oob layout be ++adjusted to use the older-style format. See notes on tags formats and ++MTD versions in yaffs_mtdif1.c. ++*/ ++/* Default: Not selected */ ++/* Meaning: Use older-style on-NAND data format with pageStatus byte */ ++/* #define CONFIG_YAFFS_9BYTE_TAGS */ ++ ++#endif /* YAFFS_OUT_OF_TREE */ ++ ++#endif /* __YAFFS_CONFIG_H__ */ +diff -Nur linux-2.6.30.orig/fs/yaffs2/yaffs_checkptrw.c linux-2.6.30/fs/yaffs2/yaffs_checkptrw.c +--- linux-2.6.30.orig/fs/yaffs2/yaffs_checkptrw.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/yaffs2/yaffs_checkptrw.c 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,394 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * 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. ++ */ ++ ++const char *yaffs_checkptrw_c_version = ++ "$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $"; ++ ++ ++#include "yaffs_checkptrw.h" ++#include "yaffs_getblockinfo.h" ++ ++static int yaffs_CheckpointSpaceOk(yaffs_Device *dev) ++{ ++ int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; ++ ++ T(YAFFS_TRACE_CHECKPOINT, ++ (TSTR("checkpt blocks available = %d" TENDSTR), ++ blocksAvailable)); ++ ++ return (blocksAvailable <= 0) ? 0 : 1; ++} ++ ++ ++static int yaffs_CheckpointErase(yaffs_Device *dev) ++{ ++ int i; ++ ++ if (!dev->eraseBlockInNAND) ++ return 0; ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR), ++ dev->internalStartBlock, dev->internalEndBlock)); ++ ++ for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); ++ if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) { ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i)); ++ if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) { ++ bi->blockState = YAFFS_BLOCK_STATE_EMPTY; ++ dev->nErasedBlocks++; ++ dev->nFreeChunks += dev->nChunksPerBlock; ++ } else { ++ dev->markNANDBlockBad(dev, i); ++ bi->blockState = YAFFS_BLOCK_STATE_DEAD; ++ } ++ } ++ } ++ ++ dev->blocksInCheckpoint = 0; ++ ++ return 1; ++} ++ ++ ++static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev) ++{ ++ int i; ++ int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; ++ T(YAFFS_TRACE_CHECKPOINT, ++ (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR), ++ dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock)); ++ ++ if (dev->checkpointNextBlock >= 0 && ++ dev->checkpointNextBlock <= dev->internalEndBlock && ++ blocksAvailable > 0) { ++ ++ for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); ++ if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { ++ dev->checkpointNextBlock = i + 1; ++ dev->checkpointCurrentBlock = i; ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i)); ++ return; ++ } ++ } ++ } ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR))); ++ ++ dev->checkpointNextBlock = -1; ++ dev->checkpointCurrentBlock = -1; ++} ++ ++static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev) ++{ ++ int i; ++ yaffs_ExtendedTags tags; ++ ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR), ++ dev->blocksInCheckpoint, dev->checkpointNextBlock)); ++ ++ if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks) ++ for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) { ++ int chunk = i * dev->nChunksPerBlock; ++ int realignedChunk = chunk - dev->chunkOffset; ++ ++ dev->readChunkWithTagsFromNAND(dev, realignedChunk, ++ NULL, &tags); ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR), ++ i, tags.objectId, tags.sequenceNumber, tags.eccResult)); ++ ++ if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) { ++ /* Right kind of block */ ++ dev->checkpointNextBlock = tags.objectId; ++ dev->checkpointCurrentBlock = i; ++ dev->checkpointBlockList[dev->blocksInCheckpoint] = i; ++ dev->blocksInCheckpoint++; ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i)); ++ return; ++ } ++ } ++ ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR))); ++ ++ dev->checkpointNextBlock = -1; ++ dev->checkpointCurrentBlock = -1; ++} ++ ++ ++int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting) ++{ ++ ++ /* Got the functions we need? */ ++ if (!dev->writeChunkWithTagsToNAND || ++ !dev->readChunkWithTagsFromNAND || ++ !dev->eraseBlockInNAND || ++ !dev->markNANDBlockBad) ++ return 0; ++ ++ if (forWriting && !yaffs_CheckpointSpaceOk(dev)) ++ return 0; ++ ++ if (!dev->checkpointBuffer) ++ dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk); ++ if (!dev->checkpointBuffer) ++ return 0; ++ ++ ++ dev->checkpointPageSequence = 0; ++ ++ dev->checkpointOpenForWrite = forWriting; ++ ++ dev->checkpointByteCount = 0; ++ dev->checkpointSum = 0; ++ dev->checkpointXor = 0; ++ dev->checkpointCurrentBlock = -1; ++ dev->checkpointCurrentChunk = -1; ++ dev->checkpointNextBlock = dev->internalStartBlock; ++ ++ /* Erase all the blocks in the checkpoint area */ ++ if (forWriting) { ++ memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); ++ dev->checkpointByteOffset = 0; ++ return yaffs_CheckpointErase(dev); ++ } else { ++ int i; ++ /* Set to a value that will kick off a read */ ++ dev->checkpointByteOffset = dev->nDataBytesPerChunk; ++ /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully) ++ * going to be way more than we need */ ++ dev->blocksInCheckpoint = 0; ++ dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2; ++ dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks); ++ for (i = 0; i < dev->checkpointMaxBlocks; i++) ++ dev->checkpointBlockList[i] = -1; ++ } ++ ++ return 1; ++} ++ ++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum) ++{ ++ __u32 compositeSum; ++ compositeSum = (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF); ++ *sum = compositeSum; ++ return 1; ++} ++ ++static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev) ++{ ++ int chunk; ++ int realignedChunk; ++ ++ yaffs_ExtendedTags tags; ++ ++ if (dev->checkpointCurrentBlock < 0) { ++ yaffs_CheckpointFindNextErasedBlock(dev); ++ dev->checkpointCurrentChunk = 0; ++ } ++ ++ if (dev->checkpointCurrentBlock < 0) ++ return 0; ++ ++ tags.chunkDeleted = 0; ++ tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */ ++ tags.chunkId = dev->checkpointPageSequence + 1; ++ tags.sequenceNumber = YAFFS_SEQUENCE_CHECKPOINT_DATA; ++ tags.byteCount = dev->nDataBytesPerChunk; ++ if (dev->checkpointCurrentChunk == 0) { ++ /* First chunk we write for the block? Set block state to ++ checkpoint */ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock); ++ bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; ++ dev->blocksInCheckpoint++; ++ } ++ ++ chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk; ++ ++ ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR), ++ chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId)); ++ ++ realignedChunk = chunk - dev->chunkOffset; ++ ++ dev->writeChunkWithTagsToNAND(dev, realignedChunk, ++ dev->checkpointBuffer, &tags); ++ dev->checkpointByteOffset = 0; ++ dev->checkpointPageSequence++; ++ dev->checkpointCurrentChunk++; ++ if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) { ++ dev->checkpointCurrentChunk = 0; ++ dev->checkpointCurrentBlock = -1; ++ } ++ memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk); ++ ++ return 1; ++} ++ ++ ++int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes) ++{ ++ int i = 0; ++ int ok = 1; ++ ++ ++ __u8 * dataBytes = (__u8 *)data; ++ ++ ++ ++ if (!dev->checkpointBuffer) ++ return 0; ++ ++ if (!dev->checkpointOpenForWrite) ++ return -1; ++ ++ while (i < nBytes && ok) { ++ dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes; ++ dev->checkpointSum += *dataBytes; ++ dev->checkpointXor ^= *dataBytes; ++ ++ dev->checkpointByteOffset++; ++ i++; ++ dataBytes++; ++ dev->checkpointByteCount++; ++ ++ ++ if (dev->checkpointByteOffset < 0 || ++ dev->checkpointByteOffset >= dev->nDataBytesPerChunk) ++ ok = yaffs_CheckpointFlushBuffer(dev); ++ } ++ ++ return i; ++} ++ ++int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes) ++{ ++ int i = 0; ++ int ok = 1; ++ yaffs_ExtendedTags tags; ++ ++ ++ int chunk; ++ int realignedChunk; ++ ++ __u8 *dataBytes = (__u8 *)data; ++ ++ if (!dev->checkpointBuffer) ++ return 0; ++ ++ if (dev->checkpointOpenForWrite) ++ return -1; ++ ++ while (i < nBytes && ok) { ++ ++ ++ if (dev->checkpointByteOffset < 0 || ++ dev->checkpointByteOffset >= dev->nDataBytesPerChunk) { ++ ++ if (dev->checkpointCurrentBlock < 0) { ++ yaffs_CheckpointFindNextCheckpointBlock(dev); ++ dev->checkpointCurrentChunk = 0; ++ } ++ ++ if (dev->checkpointCurrentBlock < 0) ++ ok = 0; ++ else { ++ chunk = dev->checkpointCurrentBlock * ++ dev->nChunksPerBlock + ++ dev->checkpointCurrentChunk; ++ ++ realignedChunk = chunk - dev->chunkOffset; ++ ++ /* read in the next chunk */ ++ /* printf("read checkpoint page %d\n",dev->checkpointPage); */ ++ dev->readChunkWithTagsFromNAND(dev, ++ realignedChunk, ++ dev->checkpointBuffer, ++ &tags); ++ ++ if (tags.chunkId != (dev->checkpointPageSequence + 1) || ++ tags.eccResult > YAFFS_ECC_RESULT_FIXED || ++ tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA) ++ ok = 0; ++ ++ dev->checkpointByteOffset = 0; ++ dev->checkpointPageSequence++; ++ dev->checkpointCurrentChunk++; ++ ++ if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) ++ dev->checkpointCurrentBlock = -1; ++ } ++ } ++ ++ if (ok) { ++ *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset]; ++ dev->checkpointSum += *dataBytes; ++ dev->checkpointXor ^= *dataBytes; ++ dev->checkpointByteOffset++; ++ i++; ++ dataBytes++; ++ dev->checkpointByteCount++; ++ } ++ } ++ ++ return i; ++} ++ ++int yaffs_CheckpointClose(yaffs_Device *dev) ++{ ++ ++ if (dev->checkpointOpenForWrite) { ++ if (dev->checkpointByteOffset != 0) ++ yaffs_CheckpointFlushBuffer(dev); ++ } else { ++ int i; ++ for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) { ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]); ++ if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) ++ bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; ++ else { ++ /* Todo this looks odd... */ ++ } ++ } ++ YFREE(dev->checkpointBlockList); ++ dev->checkpointBlockList = NULL; ++ } ++ ++ dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock; ++ dev->nErasedBlocks -= dev->blocksInCheckpoint; ++ ++ ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR), ++ dev->checkpointByteCount)); ++ ++ if (dev->checkpointBuffer) { ++ /* free the buffer */ ++ YFREE(dev->checkpointBuffer); ++ dev->checkpointBuffer = NULL; ++ return 1; ++ } else ++ return 0; ++} ++ ++int yaffs_CheckpointInvalidateStream(yaffs_Device *dev) ++{ ++ /* Erase the first checksum block */ ++ ++ T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR))); ++ ++ if (!yaffs_CheckpointSpaceOk(dev)) ++ return 0; ++ ++ return yaffs_CheckpointErase(dev); ++} ++ ++ ++ +diff -Nur linux-2.6.30.orig/fs/yaffs2/yaffs_checkptrw.h linux-2.6.30/fs/yaffs2/yaffs_checkptrw.h +--- linux-2.6.30.orig/fs/yaffs2/yaffs_checkptrw.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/yaffs2/yaffs_checkptrw.h 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,35 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_CHECKPTRW_H__ ++#define __YAFFS_CHECKPTRW_H__ ++ ++#include "yaffs_guts.h" ++ ++int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting); ++ ++int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes); ++ ++int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes); ++ ++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum); ++ ++int yaffs_CheckpointClose(yaffs_Device *dev); ++ ++int yaffs_CheckpointInvalidateStream(yaffs_Device *dev); ++ ++ ++#endif ++ +diff -Nur linux-2.6.30.orig/fs/yaffs2/yaffs_ecc.c linux-2.6.30/fs/yaffs2/yaffs_ecc.c +--- linux-2.6.30.orig/fs/yaffs2/yaffs_ecc.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.30/fs/yaffs2/yaffs_ecc.c 2009-06-11 09:21:04.000000000 +0200 +@@ -0,0 +1,326 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * 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 code implements the ECC algorithm used in SmartMedia. ++ * ++ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. ++ * The two unused bit are set to 1. ++ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC ++ * blocks are used on a 512-byte NAND page. ++ * ++ */ ++ ++/* Table generated by gen-ecc.c ++ * Using a table means we do not have to calculate p1..p4 and p1'..p4' ++ * for each byte of data. These are instead provided in a table in bits7..2. ++ * Bit 0 of each entry indicates whether the entry has an odd or even parity, and therefore ++ * this bytes influence on the line parity. ++ */ ++ ++const char *yaffs_ecc_c_version = ++ "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $"; ++ ++#include "yportenv.h" ++ ++#include "yaffs_ecc.h" ++ ++static const unsigned char column_parity_table[] = { ++ 0x00, 0x55, 0x59, 0x0c, 0x65, 0x30, 0x3c, 0x69, ++ 0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00, ++ 0x95, 0xc0, 0xcc, 0x99, 0xf0, 0xa5, 0xa9, 0xfc, ++ 0xfc, 0xa9, 0xa5, 0xf0, 0x99, 0xcc, 0xc0, 0x95, ++ 0x99, 0xcc, 0xc0, 0x95, 0xfc, 0xa9, 0xa5, 0xf0, ++ 0xf0, 0xa5, 0xa9, 0xfc, 0x95, 0xc0, 0xcc, 0x99, ++ 0x0c, 0x59, 0x55, 0x00, 0x69, 0x3c, 0x30, 0x65, ++ 0x65, 0x30, 0x3c, 0x69, 0x00, 0x55, 0x59, 0x0c, ++ 0xa5, 0xf0, 0xfc, 0xa9, 0xc0, 0x95, 0x99, 0xcc, ++ 0xcc, 0x99, 0x95, 0xc0, 0xa9, 0xfc, 0xf0, 0xa5, ++ 0x30, 0x65, 0x69, 0x3c, 0x55, 0x00, 0x0c, 0x59, ++ 0x59, 0x0c, 0x00, 0x55, 0x3c, 0x69, 0x65, 0x30, ++ 0x3c, 0x69, 0x65, 0x30, 0x59, 0x0c, 0x00, 0x55, ++ 0x55, 0x00, 0x0c, 0x59, 0x30, 0x65, 0x69, 0x3c, ++ 0xa9, 0xfc, 0xf0, 0xa5, 0xcc, 0x99, 0x95, 0xc0, ++ 0xc0, 0x95, 0x99, 0xcc, 0xa5, 0xf0, 0xfc, 0xa9, ++ 0xa9, 0xfc, 0xf0, 0xa5, 0xcc, 0x99, 0x95, 0xc0, ++ 0xc0, 0x95, 0x99, 0xcc, 0xa5, 0xf0, 0xfc, 0xa9, ++ 0x3c, 0x |