William Juul
16 years ago
committed by
Scott Wood
parent
ec29a32b5a
commit
98824ce3f9
@ -1,176 +0,0 @@ |
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# |
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# YAFFS file system configurations |
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# |
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|
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config YAFFS_FS |
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tristate "YAFFS2 file system support" |
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default n |
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depends on MTD |
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select YAFFS_YAFFS1 |
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select YAFFS_YAFFS2 |
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help |
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YAFFS2, or Yet Another Flash Filing System, is a filing system |
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optimised for NAND Flash chips. |
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|
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To compile the YAFFS2 file system support as a module, choose M |
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here: the module will be called yaffs2. |
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|
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If unsure, say N. |
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|
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Further information on YAFFS2 is available at |
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<http://www.aleph1.co.uk/yaffs/>. |
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config YAFFS_YAFFS1 |
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bool "512 byte / page devices" |
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depends on YAFFS_FS |
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default y |
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help |
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Enable YAFFS1 support -- yaffs for 512 byte / page devices |
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Not needed for 2K-page devices. |
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If unsure, say Y. |
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config YAFFS_9BYTE_TAGS |
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bool "Use older-style on-NAND data format with pageStatus byte" |
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depends on YAFFS_YAFFS1 |
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default n |
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help |
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|
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Older-style on-NAND data format has a "pageStatus" byte to record |
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chunk/page state. This byte is zero when the page is discarded. |
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Choose this option if you have existing on-NAND data using this |
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format that you need to continue to support. New data written |
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also uses the older-style format. Note: Use of this option |
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generally requires that MTD's oob layout be adjusted to use the |
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older-style format. See notes on tags formats and MTD versions |
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in yaffs_mtdif1.c. |
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If unsure, say N. |
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|
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config YAFFS_DOES_ECC |
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bool "Lets Yaffs do its own ECC" |
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depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS |
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default n |
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help |
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This enables Yaffs to use its own ECC functions instead of using |
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the ones from the generic MTD-NAND driver. |
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If unsure, say N. |
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config YAFFS_ECC_WRONG_ORDER |
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bool "Use the same ecc byte order as Steven Hill's nand_ecc.c" |
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depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS |
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default n |
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help |
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This makes yaffs_ecc.c use the same ecc byte order as Steven |
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Hill's nand_ecc.c. If not set, then you get the same ecc byte |
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order as SmartMedia. |
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If unsure, say N. |
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|
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config YAFFS_YAFFS2 |
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bool "2048 byte (or larger) / page devices" |
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depends on YAFFS_FS |
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default y |
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help |
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Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices |
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If unsure, say Y. |
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config YAFFS_AUTO_YAFFS2 |
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bool "Autoselect yaffs2 format" |
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depends on YAFFS_YAFFS2 |
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default y |
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help |
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Without this, you need to explicitely use yaffs2 as the file |
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system type. With this, you can say "yaffs" and yaffs or yaffs2 |
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will be used depending on the device page size (yaffs on |
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512-byte page devices, yaffs2 on 2K page devices). |
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If unsure, say Y. |
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config YAFFS_DISABLE_LAZY_LOAD |
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bool "Disable lazy loading" |
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depends on YAFFS_YAFFS2 |
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default n |
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help |
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"Lazy loading" defers loading file details until they are |
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required. This saves mount time, but makes the first look-up |
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a bit longer. |
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Lazy loading will only happen if enabled by this option being 'n' |
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and if the appropriate tags are available, else yaffs2 will |
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automatically fall back to immediate loading and do the right |
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thing. |
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Lazy laoding will be required by checkpointing. |
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Setting this to 'y' will disable lazy loading. |
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If unsure, say N. |
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config YAFFS_CHECKPOINT_RESERVED_BLOCKS |
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int "Reserved blocks for checkpointing" |
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depends on YAFFS_YAFFS2 |
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default 10 |
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help |
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Give the number of Blocks to reserve for checkpointing. |
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Checkpointing saves the state at unmount so that mounting is |
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much faster as a scan of all the flash to regenerate this state |
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is not needed. These Blocks are reserved per partition, so if |
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you have very small partitions the default (10) may be a mess |
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for you. You can set this value to 0, but that does not mean |
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checkpointing is disabled at all. There only won't be any |
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specially reserved blocks for checkpointing, so if there is |
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enough free space on the filesystem, it will be used for |
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checkpointing. |
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If unsure, leave at default (10), but don't wonder if there are |
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always 2MB used on your large page device partition (10 x 2k |
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pagesize). When using small partitions or when being very small |
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on space, you probably want to set this to zero. |
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config YAFFS_DISABLE_WIDE_TNODES |
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bool "Turn off wide tnodes" |
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depends on YAFFS_FS |
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default n |
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help |
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Wide tnodes are only used for NAND arrays >=32MB for 512-byte |
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page devices and >=128MB for 2k page devices. They use slightly |
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more RAM but are faster since they eliminate chunk group |
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searching. |
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Setting this to 'y' will force tnode width to 16 bits and save |
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memory but make large arrays slower. |
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If unsure, say N. |
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config YAFFS_ALWAYS_CHECK_CHUNK_ERASED |
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bool "Force chunk erase check" |
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depends on YAFFS_FS |
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default n |
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help |
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Normally YAFFS only checks chunks before writing until an erased |
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chunk is found. This helps to detect any partially written |
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chunks that might have happened due to power loss. |
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Enabling this forces on the test that chunks are erased in flash |
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before writing to them. This takes more time but is potentially |
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a bit more secure. |
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Suggest setting Y during development and ironing out driver |
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issues etc. Suggest setting to N if you want faster writing. |
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If unsure, say Y. |
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config YAFFS_SHORT_NAMES_IN_RAM |
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bool "Cache short names in RAM" |
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depends on YAFFS_FS |
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default y |
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help |
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If this config is set, then short names are stored with the |
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yaffs_Object. This costs an extra 16 bytes of RAM per object, |
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but makes look-ups faster. |
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If unsure, say Y. |
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@ -1,40 +0,0 @@ |
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# Main Makefile for YAFFS
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#
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#
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# YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
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#
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# Copyright (C) 2002-2007 Aleph One Ltd.
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# for Toby Churchill Ltd and Brightstar Engineering
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#
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# Created by Charles Manning <charles@aleph1.co.uk>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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ifneq ($(KERNELRELEASE),) |
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EXTRA_CFLAGS += -DYAFFS_OUT_OF_TREE
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obj-m := yaffs2.o
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yaffs2-objs := yaffs_mtdif.o yaffs_mtdif2.o
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yaffs2-objs += yaffs_mtdif1.o yaffs_packedtags1.o
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yaffs2-objs += yaffs_ecc.o yaffs_fs.o yaffs_guts.o
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yaffs2-objs += yaffs_packedtags2.o yaffs_qsort.o
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yaffs2-objs += yaffs_tagscompat.o yaffs_tagsvalidity.o
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yaffs2-objs += yaffs_checkptrw.o yaffs_nand.o
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else |
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KERNELDIR ?= /lib/modules/$(shell uname -r)/build
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PWD := $(shell pwd)
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modules default: |
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$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
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mi modules_install: |
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$(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
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clean: |
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$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
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endif |
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@ -1,10 +0,0 @@ |
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#
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# Makefile for the linux YAFFS filesystem routines.
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#
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obj-$(CONFIG_YAFFS_FS) += yaffs.o
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yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o
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yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
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yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
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yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
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@ -1,20 +0,0 @@ |
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To build YAFFS in the Linux kernel tree you need to run the patch-ker.sh |
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script from the yaffs source directory, giving your choice as to whether |
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you wish to copy (c) or link (l) the code and the path to your kernel |
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sources, e.g: |
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./patch-ker.sh c /usr/src/linux |
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This will copy the yaffs files into fs/yaffs2 and modify the Kconfig |
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and Makefiles in the fs directory. |
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./patch-ker.sh l /usr/src/linux |
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This does the same as the above but makes symbolic links instead. |
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After you've run the script, go back to your normal kernel making procedure |
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and configure the yaffs settings you want. |
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Prolems? Contact the yaffs mailing list: |
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http://www.aleph1.co.uk/mailman/listinfo/yaffs |
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File diff suppressed because it is too large
Load Diff
@ -1,75 +0,0 @@ |
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# Makefile for YAFFS direct test
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#
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#
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# YAFFS: Yet another Flash File System. A NAND-flash specific file system.
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#
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# Copyright (C) 2003 Aleph One Ltd.
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#
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#
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# Created by Charles Manning <charles@aleph1.co.uk>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# NB Warning this Makefile does not include header dependencies.
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#
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# $Id: Makefile,v 1.1 2007/10/16 00:46:33 charles Exp $
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#EXTRA_COMPILE_FLAGS = -DYAFFS_IGNORE_TAGS_ECC
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CFLAGS = -Wall -DCONFIG_YAFFS_DIRECT -DCONFIG_YAFFS_SHORT_NAMES_IN_RAM -DCONFIG_YAFFS_YAFFS2 -g $(EXTRA_COMPILE_FLAGS) -DNO_Y_INLINE
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CFLAGS+= -fstack-check -O0
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#CFLAGS+= -Wshadow -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Wmissing-declarations
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#CFLAGS+= -Wmissing-prototypes -Wredundant-decls -Wnested-externs -Winline
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FSXTESTOBJS = yaffs_fsx.o yaffscfg2k.o yaffs_ecc.o yaffs_fileem2k.o yaffsfs.o yaffs_guts.o \
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yaffs_packedtags1.o yaffs_ramdisk.o yaffs_ramem2k.o \
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yaffs_tagscompat.o yaffs_packedtags2.o yaffs_tagsvalidity.o yaffs_nand.o \
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yaffs_checkptrw.o yaffs_qsort.o \
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# yaffs_checkptrwtest.o\
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BOOTTESTOBJS = bootldtst.o yboot.o yaffs_fileem.o nand_ecc.o
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#ALLOBJS = dtest.o nand_ecc.o yaffscfg.o yaffs_fileem.o yaffsfs.o yaffs_ramdisk.o bootldtst.o yboot.o yaffs_ramem2k.o
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ALLOBJS = $(FSXTESTOBJS) $(BOOTTESTOBJS)
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YAFFSSYMLINKS = devextras.h yaffs_ecc.c yaffs_ecc.h yaffs_guts.c yaffs_guts.h yaffsinterface.h yportenv.h yaffs_tagscompat.c yaffs_tagscompat.h \
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yaffs_packedtags1.c yaffs_packedtags1.h yaffs_packedtags2.c yaffs_packedtags2.h yaffs_nandemul2k.h \
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yaffs_nand.c yaffs_nand.h \
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yaffs_tagsvalidity.c yaffs_tagsvalidity.h yaffs_checkptrw.h yaffs_checkptrw.c \
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yaffs_qsort.c yaffs_qsort.h
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YAFFSDIRECTSYMLINKS = yaffscfg2k.c yaffs_fileem2k.c yaffsfs.c yaffs_flashif.h \
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yaffs_fileem2k.h yaffsfs.h yaffs_malloc.h yaffs_ramdisk.h ydirectenv.h \
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yaffscfg.h yaffs_fileem.c yaffs_flashif.c yaffs_ramdisk.c yaffs_ramem2k.c
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#all: fsxtest boottest
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all: fsxtest |
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$(ALLOBJS): %.o: %.c |
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gcc -c $(CFLAGS) $< -o $@
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$(YAFFSSYMLINKS): |
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ln -s ../../$@ $@
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$(YAFFSDIRECTSYMLINKS): |
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ln -s ../$@ $@
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fsxtest: $(YAFFSSYMLINKS) $(YAFFSDIRECTSYMLINKS) $(FSXTESTOBJS) |
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gcc -o $@ $(FSXTESTOBJS)
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boottest: $(SYMLINKS) $(BOOTTESTOBJS) |
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gcc -o $@ $(BOOTTESTOBJS)
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clean: |
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rm -f $(ALLOBJS) core
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@ -1,7 +0,0 @@ |
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NB THis directory uses a hacked version of fsx.c which is released under |
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Apple Public Source License. |
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From what I have been able to determine, it is legally OK to release a hacked |
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version for the purposes of testing. |
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If anyone knows otherwise, please contact me: manningc2@actrix.gen.nz |
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File diff suppressed because it is too large
Load Diff
@ -1,219 +0,0 @@ |
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/*
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* YAFFS: Yet Another Flash File System. A NAND-flash specific file system. |
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* |
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* Copyright (C) 2002-2007 Aleph One Ltd. |
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* for Toby Churchill Ltd and Brightstar Engineering |
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* |
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* Created by Charles Manning <charles@aleph1.co.uk> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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*/ |
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/*
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* This provides a YAFFS nand emulation on a file. |
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* This is only intended as test code to test persistence etc. |
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*/ |
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/* XXX U-BOOT XXX */ |
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#include <common.h> |
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const char *yaffs_flashif_c_version = "$Id: yaffs_fileem.c,v 1.3 2007/02/14 01:09:06 wookey Exp $"; |
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#include "yportenv.h" |
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#include "yaffs_flashif.h" |
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#include "yaffs_guts.h" |
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#include "devextras.h" |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#include <unistd.h> |
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#define SIZE_IN_MB 16 |
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#define BLOCK_SIZE (32 * 528) |
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#define BLOCKS_PER_MEG ((1024*1024)/(32 * 512)) |
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typedef struct
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{ |
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__u8 data[528]; // Data + spare
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} yflash_Page; |
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typedef struct |
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{ |
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yflash_Page page[32]; // The pages in the block
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} yflash_Block; |
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typedef struct |
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{ |
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int handle; |
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int nBlocks; |
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} yflash_Device; |
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static yflash_Device filedisk; |
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static int CheckInit(yaffs_Device *dev) |
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{ |
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static int initialised = 0; |
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int i; |
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int fSize; |
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int written; |
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yflash_Page p; |
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if(initialised)
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{ |
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return YAFFS_OK; |
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} |
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initialised = 1; |
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filedisk.nBlocks = (SIZE_IN_MB * 1024 * 1024)/(16 * 1024); |
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filedisk.handle = open("yaffsemfile", O_RDWR | O_CREAT, S_IREAD | S_IWRITE); |
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if(filedisk.handle < 0) |
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{ |
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perror("Failed to open yaffs emulation file"); |
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return YAFFS_FAIL; |
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} |
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fSize = lseek(filedisk.handle,0,SEEK_END); |
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if(fSize < SIZE_IN_MB * 1024 * 1024) |
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{ |
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printf("Creating yaffs emulation file\n"); |
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lseek(filedisk.handle,0,SEEK_SET); |
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memset(&p,0xff,sizeof(yflash_Page)); |
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for(i = 0; i < SIZE_IN_MB * 1024 * 1024; i+= 512) |
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{ |
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written = write(filedisk.handle,&p,sizeof(yflash_Page)); |
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if(written != sizeof(yflash_Page)) |
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{ |
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printf("Write failed\n"); |
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return YAFFS_FAIL; |
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} |
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}
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} |
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return 1; |
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} |
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int yflash_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_Spare *spare) |
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{ |
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int written; |
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CheckInit(dev); |
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if(data) |
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{ |
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lseek(filedisk.handle,chunkInNAND * 528,SEEK_SET); |
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written = write(filedisk.handle,data,512); |
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if(written != 512) return YAFFS_FAIL; |
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} |
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if(spare) |
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{ |
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lseek(filedisk.handle,chunkInNAND * 528 + 512,SEEK_SET); |
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written = write(filedisk.handle,spare,16); |
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if(written != 16) return YAFFS_FAIL; |
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} |
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return YAFFS_OK;
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} |
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int yflash_ReadChunkFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_Spare *spare) |
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{ |
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int nread; |
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CheckInit(dev); |
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if(data) |
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{ |
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lseek(filedisk.handle,chunkInNAND * 528,SEEK_SET); |
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nread = read(filedisk.handle,data,512); |
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if(nread != 512) return YAFFS_FAIL; |
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} |
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if(spare) |
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{ |
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lseek(filedisk.handle,chunkInNAND * 528 + 512,SEEK_SET); |
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nread= read(filedisk.handle,spare,16); |
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if(nread != 16) return YAFFS_FAIL; |
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} |
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return YAFFS_OK;
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} |
||||
|
||||
|
||||
int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) |
||||
{ |
||||
|
||||
int i; |
||||
|
||||
CheckInit(dev); |
||||
|
||||
if(blockNumber < 0 || blockNumber >= filedisk.nBlocks) |
||||
{ |
||||
T(YAFFS_TRACE_ALWAYS,("Attempt to erase non-existant block %d\n",blockNumber)); |
||||
return YAFFS_FAIL; |
||||
} |
||||
else |
||||
{ |
||||
|
||||
yflash_Page pg; |
||||
|
||||
memset(&pg,0xff,sizeof(yflash_Page)); |
||||
|
||||
lseek(filedisk.handle, blockNumber * 32 * 528, SEEK_SET); |
||||
|
||||
for(i = 0; i < 32; i++) |
||||
{ |
||||
write(filedisk.handle,&pg,528); |
||||
} |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
} |
||||
|
||||
int yflash_InitialiseNAND(yaffs_Device *dev) |
||||
{ |
||||
dev->useNANDECC = 1; // force on useNANDECC which gets faked.
|
||||
// This saves us doing ECC checks.
|
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
@ -1,443 +0,0 @@ |
||||
/*
|
||||
* 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 provides a YAFFS nand emulation on a file for emulating 2kB pages. |
||||
* This is only intended as test code to test persistence etc. |
||||
*/ |
||||
|
||||
/* XXX U-BOOT XXX */ |
||||
#include <common.h> |
||||
|
||||
const char *yaffs_flashif_c_version = "$Id: yaffs_fileem2k.c,v 1.12 2007/02/14 01:09:06 wookey Exp $"; |
||||
|
||||
|
||||
#include "yportenv.h" |
||||
|
||||
#include "yaffs_flashif.h" |
||||
#include "yaffs_guts.h" |
||||
#include "devextras.h" |
||||
|
||||
#include <sys/types.h> |
||||
#include <sys/stat.h> |
||||
#include <fcntl.h> |
||||
#include <unistd.h> |
||||
|
||||
#include "yaffs_fileem2k.h" |
||||
#include "yaffs_packedtags2.h" |
||||
|
||||
//#define SIMULATE_FAILURES
|
||||
|
||||
typedef struct
|
||||
{ |
||||
__u8 data[PAGE_SIZE]; // Data + spare
|
||||
} yflash_Page; |
||||
|
||||
typedef struct |
||||
{ |
||||
yflash_Page page[PAGES_PER_BLOCK]; // The pages in the block
|
||||
|
||||
} yflash_Block; |
||||
|
||||
|
||||
|
||||
#define MAX_HANDLES 20 |
||||
#define BLOCKS_PER_HANDLE 8000 |
||||
|
||||
typedef struct |
||||
{ |
||||
int handle[MAX_HANDLES]; |
||||
int nBlocks; |
||||
} yflash_Device; |
||||
|
||||
static yflash_Device filedisk; |
||||
|
||||
int yaffs_testPartialWrite = 0; |
||||
|
||||
|
||||
|
||||
|
||||
static __u8 localBuffer[PAGE_SIZE]; |
||||
|
||||
static char *NToName(char *buf,int n) |
||||
{ |
||||
sprintf(buf,"emfile%d",n); |
||||
return buf; |
||||
} |
||||
|
||||
static char dummyBuffer[BLOCK_SIZE]; |
||||
|
||||
static int GetBlockFileHandle(int n) |
||||
{ |
||||
int h; |
||||
int requiredSize; |
||||
|
||||
char name[40]; |
||||
NToName(name,n); |
||||
int fSize; |
||||
int i; |
||||
|
||||
h = open(name, O_RDWR | O_CREAT, S_IREAD | S_IWRITE); |
||||
if(h >= 0){ |
||||
fSize = lseek(h,0,SEEK_END); |
||||
requiredSize = BLOCKS_PER_HANDLE * BLOCK_SIZE; |
||||
if(fSize < requiredSize){ |
||||
for(i = 0; i < BLOCKS_PER_HANDLE; i++) |
||||
if(write(h,dummyBuffer,BLOCK_SIZE) != BLOCK_SIZE) |
||||
return -1; |
||||
|
||||
} |
||||
} |
||||
|
||||
return h; |
||||
|
||||
} |
||||
|
||||
static int CheckInit(void) |
||||
{ |
||||
static int initialised = 0; |
||||
int h; |
||||
int i; |
||||
|
||||
|
||||
off_t fSize; |
||||
off_t requiredSize; |
||||
int written; |
||||
int blk; |
||||
|
||||
yflash_Page p; |
||||
|
||||
if(initialised)
|
||||
{ |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
initialised = 1; |
||||
|
||||
memset(dummyBuffer,0xff,sizeof(dummyBuffer)); |
||||
|
||||
|
||||
filedisk.nBlocks = SIZE_IN_MB * BLOCKS_PER_MB; |
||||
|
||||
for(i = 0; i < MAX_HANDLES; i++) |
||||
filedisk.handle[i] = -1; |
||||
|
||||
for(i = 0,blk = 0; blk < filedisk.nBlocks; blk+=BLOCKS_PER_HANDLE,i++) |
||||
filedisk.handle[i] = GetBlockFileHandle(i); |
||||
|
||||
|
||||
return 1; |
||||
} |
||||
|
||||
|
||||
int yflash_GetNumberOfBlocks(void) |
||||
{ |
||||
CheckInit(); |
||||
|
||||
return filedisk.nBlocks; |
||||
} |
||||
|
||||
int yflash_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags) |
||||
{ |
||||
int written; |
||||
int pos; |
||||
int h; |
||||
int i; |
||||
int nRead; |
||||
int error; |
||||
|
||||
T(YAFFS_TRACE_MTD,(TSTR("write chunk %d data %x tags %x" TENDSTR),chunkInNAND,(unsigned)data, (unsigned)tags)); |
||||
|
||||
CheckInit(); |
||||
|
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE; |
||||
h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))]; |
||||
|
||||
lseek(h,pos,SEEK_SET); |
||||
nRead = read(h, localBuffer,dev->nDataBytesPerChunk); |
||||
for(i = error = 0; i < dev->nDataBytesPerChunk && !error; i++){ |
||||
if(localBuffer[i] != 0xFF){ |
||||
printf("nand simulation: chunk %d data byte %d was %0x2\n", |
||||
chunkInNAND,i,localBuffer[i]); |
||||
error = 1; |
||||
} |
||||
} |
||||
|
||||
for(i = 0; i < dev->nDataBytesPerChunk; i++) |
||||
localBuffer[i] &= data[i]; |
||||
|
||||
if(memcmp(localBuffer,data,dev->nDataBytesPerChunk)) |
||||
printf("nand simulator: data does not match\n"); |
||||
|
||||
lseek(h,pos,SEEK_SET); |
||||
written = write(h,localBuffer,dev->nDataBytesPerChunk); |
||||
|
||||
if(yaffs_testPartialWrite){ |
||||
close(h); |
||||
exit(1); |
||||
} |
||||
|
||||
#ifdef SIMULATE_FAILURES |
||||
if((chunkInNAND >> 6) == 100)
|
||||
written = 0; |
||||
|
||||
if((chunkInNAND >> 6) == 110)
|
||||
written = 0; |
||||
#endif |
||||
|
||||
|
||||
if(written != dev->nDataBytesPerChunk) return YAFFS_FAIL; |
||||
} |
||||
|
||||
if(tags) |
||||
{ |
||||
pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE ; |
||||
h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))]; |
||||
|
||||
lseek(h,pos,SEEK_SET); |
||||
|
||||
if( 0 && dev->isYaffs2) |
||||
{ |
||||
|
||||
written = write(h,tags,sizeof(yaffs_ExtendedTags)); |
||||
if(written != sizeof(yaffs_ExtendedTags)) return YAFFS_FAIL; |
||||
} |
||||
else |
||||
{ |
||||
yaffs_PackedTags2 pt; |
||||
yaffs_PackTags2(&pt,tags); |
||||
__u8 * ptab = (__u8 *)&pt; |
||||
|
||||
nRead = read(h,localBuffer,sizeof(pt)); |
||||
for(i = error = 0; i < sizeof(pt) && !error; i++){ |
||||
if(localBuffer[i] != 0xFF){ |
||||
printf("nand simulation: chunk %d oob byte %d was %0x2\n", |
||||
chunkInNAND,i,localBuffer[i]); |
||||
error = 1; |
||||
} |
||||
} |
||||
|
||||
for(i = 0; i < sizeof(pt); i++) |
||||
localBuffer[i] &= ptab[i]; |
||||
|
||||
if(memcmp(localBuffer,&pt,sizeof(pt))) |
||||
printf("nand sim: tags corruption\n"); |
||||
|
||||
lseek(h,pos,SEEK_SET); |
||||
|
||||
written = write(h,localBuffer,sizeof(pt)); |
||||
if(written != sizeof(pt)) return YAFFS_FAIL; |
||||
} |
||||
} |
||||
|
||||
|
||||
return YAFFS_OK;
|
||||
|
||||
} |
||||
|
||||
int yaffs_CheckAllFF(const __u8 *ptr, int n) |
||||
{ |
||||
while(n) |
||||
{ |
||||
n--; |
||||
if(*ptr!=0xFF) return 0; |
||||
ptr++; |
||||
} |
||||
return 1; |
||||
} |
||||
|
||||
|
||||
static int fail300 = 1; |
||||
static int fail320 = 1; |
||||
|
||||
static int failRead10 = 2; |
||||
|
||||
int yflash_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags) |
||||
{ |
||||
int nread; |
||||
int pos; |
||||
int h; |
||||
|
||||
T(YAFFS_TRACE_MTD,(TSTR("read chunk %d data %x tags %x" TENDSTR),chunkInNAND,(unsigned)data, (unsigned)tags)); |
||||
|
||||
CheckInit(); |
||||
|
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
|
||||
pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE; |
||||
h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
|
||||
lseek(h,pos,SEEK_SET); |
||||
nread = read(h,data,dev->nDataBytesPerChunk); |
||||
|
||||
|
||||
if(nread != dev->nDataBytesPerChunk) return YAFFS_FAIL; |
||||
} |
||||
|
||||
if(tags) |
||||
{ |
||||
pos = (chunkInNAND % (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE)) * PAGE_SIZE + PAGE_DATA_SIZE; |
||||
h = filedisk.handle[(chunkInNAND / (PAGES_PER_BLOCK * BLOCKS_PER_HANDLE))];
|
||||
lseek(h,pos,SEEK_SET); |
||||
|
||||
if(0 && dev->isYaffs2) |
||||
{ |
||||
nread= read(h,tags,sizeof(yaffs_ExtendedTags)); |
||||
if(nread != sizeof(yaffs_ExtendedTags)) return YAFFS_FAIL; |
||||
if(yaffs_CheckAllFF((__u8 *)tags,sizeof(yaffs_ExtendedTags))) |
||||
{ |
||||
yaffs_InitialiseTags(tags); |
||||
} |
||||
else |
||||
{ |
||||
tags->chunkUsed = 1; |
||||
} |
||||
} |
||||
else |
||||
{ |
||||
yaffs_PackedTags2 pt; |
||||
nread= read(h,&pt,sizeof(pt)); |
||||
yaffs_UnpackTags2(tags,&pt); |
||||
#ifdef SIMULATE_FAILURES |
||||
if((chunkInNAND >> 6) == 100) { |
||||
if(fail300 && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR){ |
||||
tags->eccResult = YAFFS_ECC_RESULT_FIXED; |
||||
fail300 = 0; |
||||
} |
||||
|
||||
} |
||||
if((chunkInNAND >> 6) == 110) { |
||||
if(fail320 && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR){ |
||||
tags->eccResult = YAFFS_ECC_RESULT_FIXED; |
||||
fail320 = 0; |
||||
} |
||||
} |
||||
#endif |
||||
if(failRead10>0 && chunkInNAND == 10){ |
||||
failRead10--; |
||||
nread = 0; |
||||
} |
||||
|
||||
if(nread != sizeof(pt)) return YAFFS_FAIL; |
||||
} |
||||
} |
||||
|
||||
|
||||
return YAFFS_OK;
|
||||
|
||||
} |
||||
|
||||
|
||||
int yflash_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) |
||||
{ |
||||
int written; |
||||
int h; |
||||
|
||||
yaffs_PackedTags2 pt; |
||||
|
||||
CheckInit(); |
||||
|
||||
memset(&pt,0,sizeof(pt)); |
||||
h = filedisk.handle[(blockNo / ( BLOCKS_PER_HANDLE))]; |
||||
lseek(h,((blockNo % BLOCKS_PER_HANDLE) * dev->nChunksPerBlock) * PAGE_SIZE + PAGE_DATA_SIZE,SEEK_SET); |
||||
written = write(h,&pt,sizeof(pt)); |
||||
|
||||
if(written != sizeof(pt)) return YAFFS_FAIL; |
||||
|
||||
|
||||
return YAFFS_OK; |
||||
|
||||
} |
||||
|
||||
int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) |
||||
{ |
||||
|
||||
int i; |
||||
int h; |
||||
|
||||
CheckInit(); |
||||
|
||||
printf("erase block %d\n",blockNumber); |
||||
|
||||
if(blockNumber == 320) |
||||
fail320 = 1; |
||||
|
||||
if(blockNumber < 0 || blockNumber >= filedisk.nBlocks) |
||||
{ |
||||
T(YAFFS_TRACE_ALWAYS,("Attempt to erase non-existant block %d\n",blockNumber)); |
||||
return YAFFS_FAIL; |
||||
} |
||||
else |
||||
{ |
||||
|
||||
__u8 pg[PAGE_SIZE]; |
||||
int syz = PAGE_SIZE; |
||||
int pos; |
||||
|
||||
memset(pg,0xff,syz); |
||||
|
||||
|
||||
h = filedisk.handle[(blockNumber / ( BLOCKS_PER_HANDLE))]; |
||||
lseek(h,((blockNumber % BLOCKS_PER_HANDLE) * dev->nChunksPerBlock) * PAGE_SIZE,SEEK_SET);
|
||||
for(i = 0; i < dev->nChunksPerBlock; i++) |
||||
{ |
||||
write(h,pg,PAGE_SIZE); |
||||
} |
||||
pos = lseek(h, 0,SEEK_CUR); |
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
} |
||||
|
||||
int yflash_InitialiseNAND(yaffs_Device *dev) |
||||
{ |
||||
CheckInit(); |
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
|
||||
|
||||
|
||||
int yflash_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber) |
||||
{ |
||||
yaffs_ExtendedTags tags; |
||||
int chunkNo; |
||||
|
||||
*sequenceNumber = 0; |
||||
|
||||
chunkNo = blockNo * dev->nChunksPerBlock; |
||||
|
||||
yflash_ReadChunkWithTagsFromNAND(dev,chunkNo,NULL,&tags); |
||||
if(tags.blockBad) |
||||
{ |
||||
*state = YAFFS_BLOCK_STATE_DEAD; |
||||
} |
||||
else if(!tags.chunkUsed) |
||||
{ |
||||
*state = YAFFS_BLOCK_STATE_EMPTY; |
||||
} |
||||
else if(tags.chunkUsed) |
||||
{ |
||||
*state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; |
||||
*sequenceNumber = tags.sequenceNumber; |
||||
} |
||||
return YAFFS_OK; |
||||
} |
||||
@ -1,50 +0,0 @@ |
||||
/*
|
||||
* 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 __FILEEM2K_H__ |
||||
#define __FILEEM2K_H__ |
||||
|
||||
#if 1 |
||||
|
||||
#define SIZE_IN_MB 128 |
||||
//#define SIZE_IN_MB 8000
|
||||
#define PAGE_DATA_SIZE (2048) |
||||
#define PAGE_SPARE_SIZE (64) |
||||
#define PAGE_SIZE (PAGE_DATA_SIZE + PAGE_SPARE_SIZE) |
||||
#define PAGES_PER_BLOCK (64) |
||||
#define BLOCK_DATA_SIZE (PAGE_DATA_SIZE * PAGES_PER_BLOCK) |
||||
#define BLOCK_SIZE (PAGES_PER_BLOCK * (PAGE_SIZE)) |
||||
#define BLOCKS_PER_MB ((1024*1024)/BLOCK_DATA_SIZE) |
||||
#define SIZE_IN_BLOCKS (BLOCKS_PER_MB * SIZE_IN_MB) |
||||
|
||||
#else |
||||
|
||||
#define SIZE_IN_MB 128 |
||||
#define PAGE_DATA_SIZE (512) |
||||
#define SPARE_SIZE (16) |
||||
#define PAGE_SIZE (PAGE_DATA_SIZE + SPARE_SIZE) |
||||
#define PAGES_PER_BLOCK (32) |
||||
#define BLOCK_DATA_SIZE (PAGE_SIZE * PAGES_PER_BLOCK) |
||||
#define BLOCK_SIZE (PAGES_PER_BLOCK * (PAGE_SIZE)) |
||||
#define BLOCKS_PER_MB ((1024*1024)/BLOCK_DATA_SIZE) |
||||
#define SIZE_IN_BLOCKS (BLOCKS_PER_MB * SIZE_IN_MB) |
||||
|
||||
#endif |
||||
|
||||
|
||||
int yflash_GetNumberOfBlocks(void); |
||||
|
||||
#endif |
||||
|
||||
@ -1,230 +0,0 @@ |
||||
/*
|
||||
* 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. |
||||
*/ |
||||
|
||||
/* XXX U-BOOT XXX */ |
||||
#include <common.h> |
||||
|
||||
const char *yaffs_flashif_c_version = "$Id: yaffs_flashif.c,v 1.3 2007/02/14 01:09:06 wookey Exp $"; |
||||
|
||||
|
||||
#include "yportenv.h" |
||||
|
||||
#include "yaffs_flashif.h" |
||||
#include "yaffs_guts.h" |
||||
#include "devextras.h" |
||||
|
||||
|
||||
#define SIZE_IN_MB 16 |
||||
|
||||
#define BLOCK_SIZE (32 * 528) |
||||
#define BLOCKS_PER_MEG ((1024*1024)/(32 * 512)) |
||||
|
||||
|
||||
|
||||
typedef struct
|
||||
{ |
||||
__u8 data[528]; // Data + spare
|
||||
} yflash_Page; |
||||
|
||||
typedef struct |
||||
{ |
||||
yflash_Page page[32]; // The pages in the block
|
||||
|
||||
} yflash_Block; |
||||
|
||||
|
||||
|
||||
typedef struct |
||||
{ |
||||
yflash_Block **block; |
||||
int nBlocks; |
||||
} yflash_Device; |
||||
|
||||
static yflash_Device ramdisk; |
||||
|
||||
static int CheckInit(yaffs_Device *dev) |
||||
{ |
||||
static int initialised = 0; |
||||
|
||||
int i; |
||||
int fail = 0; |
||||
int nAllocated = 0; |
||||
|
||||
if(initialised)
|
||||
{ |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
initialised = 1; |
||||
|
||||
|
||||
ramdisk.nBlocks = (SIZE_IN_MB * 1024 * 1024)/(16 * 1024); |
||||
|
||||
ramdisk.block = YMALLOC(sizeof(yflash_Block *) * ramdisk.nBlocks); |
||||
|
||||
if(!ramdisk.block) return 0; |
||||
|
||||
for(i=0; i <ramdisk.nBlocks; i++) |
||||
{ |
||||
ramdisk.block[i] = NULL; |
||||
} |
||||
|
||||
for(i=0; i <ramdisk.nBlocks && !fail; i++) |
||||
{ |
||||
if((ramdisk.block[i] = YMALLOC(sizeof(yflash_Block))) == 0) |
||||
{ |
||||
fail = 1; |
||||
} |
||||
else |
||||
{ |
||||
yflash_EraseBlockInNAND(dev,i); |
||||
nAllocated++; |
||||
} |
||||
} |
||||
|
||||
if(fail) |
||||
{ |
||||
for(i = 0; i < nAllocated; i++) |
||||
{ |
||||
YFREE(ramdisk.block[i]); |
||||
} |
||||
YFREE(ramdisk.block); |
||||
|
||||
T(YAFFS_TRACE_ALWAYS,("Allocation failed, could only allocate %dMB of %dMB requested.\n", |
||||
nAllocated/64,ramdisk.nBlocks * YAFFS_BYTES_PER_BLOCK)); |
||||
return 0; |
||||
} |
||||
|
||||
|
||||
|
||||
return 1; |
||||
} |
||||
|
||||
int yflash_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
|
||||
|
||||
CheckInit(dev); |
||||
|
||||
blk = chunkInNAND/32; |
||||
pg = chunkInNAND%32; |
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
memcpy(ramdisk.block[blk]->page[pg].data,data,512); |
||||
} |
||||
|
||||
|
||||
if(tags) |
||||
{ |
||||
yaffs_PackedTags pt; |
||||
yaffs_PackTags(&pt,tags); |
||||
memcpy(&ramdisk.block[blk]->page[pg].data[512],&pt,sizeof(pt)); |
||||
} |
||||
|
||||
return YAFFS_OK;
|
||||
|
||||
} |
||||
|
||||
|
||||
int yflash_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_Tags *tags) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
|
||||
|
||||
CheckInit(dev); |
||||
|
||||
blk = chunkInNAND/32; |
||||
pg = chunkInNAND%32; |
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
memcpy(data,ramdisk.block[blk]->page[pg].data,512); |
||||
} |
||||
|
||||
|
||||
if(tags) |
||||
{ |
||||
yaffs_PackedTags pt; |
||||
memcpy(&pt,&ramdisk.block[blk]->page[pg].data[512],sizeof(yaffs_PackedTags)); |
||||
yaffs_UnpackTags(tags,&pt); |
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
|
||||
int yflash_CheckChunkErased(yaffs_Device *dev,int chunkInNAND) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
int i; |
||||
|
||||
|
||||
CheckInit(dev); |
||||
|
||||
blk = chunkInNAND/32; |
||||
pg = chunkInNAND%32; |
||||
|
||||
|
||||
for(i = 0; i < 528; i++) |
||||
{ |
||||
if(ramdisk.block[blk]->page[pg].data[i] != 0xFF) |
||||
{ |
||||
return YAFFS_FAIL; |
||||
} |
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
|
||||
} |
||||
|
||||
int yflash_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) |
||||
{ |
||||
|
||||
CheckInit(dev); |
||||
|
||||
if(blockNumber < 0 || blockNumber >= ramdisk.nBlocks) |
||||
{ |
||||
T(YAFFS_TRACE_ALWAYS,("Attempt to erase non-existant block %d\n",blockNumber)); |
||||
return YAFFS_FAIL; |
||||
} |
||||
else |
||||
{ |
||||
memset(ramdisk.block[blockNumber],0xFF,sizeof(yflash_Block)); |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
} |
||||
|
||||
int yflash_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) |
||||
{ |
||||
return YAFFS_OK; |
||||
|
||||
} |
||||
int yflash_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber) |
||||
{ |
||||
*state = YAFFS_BLOCK_STATE_EMPTY; |
||||
*sequenceNumber = 0; |
||||
} |
||||
|
||||
|
||||
int yflash_InitialiseNAND(yaffs_Device *dev) |
||||
{ |
||||
return YAFFS_OK; |
||||
} |
||||
@ -1,235 +0,0 @@ |
||||
/*
|
||||
* 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. |
||||
*/ |
||||
|
||||
/*
|
||||
* yaffs_ramdisk.c: yaffs ram disk component |
||||
* This provides a ram disk under yaffs. |
||||
* NB this is not intended for NAND emulation. |
||||
* Use this with dev->useNANDECC enabled, then ECC overheads are not required. |
||||
*/ |
||||
|
||||
/* XXX U-BOOT XXX */ |
||||
#include <common.h> |
||||
|
||||
const char *yaffs_ramdisk_c_version = "$Id: yaffs_ramdisk.c,v 1.4 2007/02/14 01:09:06 wookey Exp $"; |
||||
|
||||
|
||||
#include "yportenv.h" |
||||
|
||||
#include "yaffs_ramdisk.h" |
||||
#include "yaffs_guts.h" |
||||
#include "devextras.h" |
||||
#include "yaffs_packedtags1.h" |
||||
|
||||
|
||||
|
||||
#define SIZE_IN_MB 2 |
||||
|
||||
#define BLOCK_SIZE (32 * 528) |
||||
#define BLOCKS_PER_MEG ((1024*1024)/(32 * 512)) |
||||
|
||||
|
||||
|
||||
|
||||
|
||||
typedef struct
|
||||
{ |
||||
__u8 data[528]; // Data + spare
|
||||
} yramdisk_Page; |
||||
|
||||
typedef struct |
||||
{ |
||||
yramdisk_Page page[32]; // The pages in the block
|
||||
|
||||
} yramdisk_Block; |
||||
|
||||
|
||||
|
||||
typedef struct |
||||
{ |
||||
yramdisk_Block **block; |
||||
int nBlocks; |
||||
} yramdisk_Device; |
||||
|
||||
static yramdisk_Device ramdisk; |
||||
|
||||
static int CheckInit(yaffs_Device *dev) |
||||
{ |
||||
static int initialised = 0; |
||||
|
||||
int i; |
||||
int fail = 0; |
||||
//int nBlocks;
|
||||
int nAllocated = 0; |
||||
|
||||
if(initialised)
|
||||
{ |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
initialised = 1; |
||||
|
||||
|
||||
ramdisk.nBlocks = (SIZE_IN_MB * 1024 * 1024)/(16 * 1024); |
||||
|
||||
ramdisk.block = YMALLOC(sizeof(yramdisk_Block *) * ramdisk.nBlocks); |
||||
|
||||
if(!ramdisk.block) return 0; |
||||
|
||||
for(i=0; i <ramdisk.nBlocks; i++) |
||||
{ |
||||
ramdisk.block[i] = NULL; |
||||
} |
||||
|
||||
for(i=0; i <ramdisk.nBlocks && !fail; i++) |
||||
{ |
||||
if((ramdisk.block[i] = YMALLOC(sizeof(yramdisk_Block))) == 0) |
||||
{ |
||||
fail = 1; |
||||
} |
||||
else |
||||
{ |
||||
yramdisk_EraseBlockInNAND(dev,i); |
||||
nAllocated++; |
||||
} |
||||
} |
||||
|
||||
if(fail) |
||||
{ |
||||
for(i = 0; i < nAllocated; i++) |
||||
{ |
||||
YFREE(ramdisk.block[i]); |
||||
} |
||||
YFREE(ramdisk.block); |
||||
|
||||
T(YAFFS_TRACE_ALWAYS,("Allocation failed, could only allocate %dMB of %dMB requested.\n", |
||||
nAllocated/64,ramdisk.nBlocks * 528)); |
||||
return 0; |
||||
} |
||||
|
||||
|
||||
return 1; |
||||
} |
||||
|
||||
int yramdisk_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
|
||||
|
||||
CheckInit(dev); |
||||
|
||||
blk = chunkInNAND/32; |
||||
pg = chunkInNAND%32; |
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
memcpy(ramdisk.block[blk]->page[pg].data,data,512); |
||||
} |
||||
|
||||
|
||||
if(tags) |
||||
{ |
||||
yaffs_PackedTags1 pt; |
||||
|
||||
yaffs_PackTags1(&pt,tags); |
||||
memcpy(&ramdisk.block[blk]->page[pg].data[512],&pt,sizeof(pt)); |
||||
} |
||||
|
||||
return YAFFS_OK;
|
||||
|
||||
} |
||||
|
||||
|
||||
int yramdisk_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
|
||||
|
||||
CheckInit(dev); |
||||
|
||||
blk = chunkInNAND/32; |
||||
pg = chunkInNAND%32; |
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
memcpy(data,ramdisk.block[blk]->page[pg].data,512); |
||||
} |
||||
|
||||
|
||||
if(tags) |
||||
{ |
||||
yaffs_PackedTags1 pt; |
||||
|
||||
memcpy(&pt,&ramdisk.block[blk]->page[pg].data[512],sizeof(pt)); |
||||
yaffs_UnpackTags1(tags,&pt); |
||||
|
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
|
||||
int yramdisk_CheckChunkErased(yaffs_Device *dev,int chunkInNAND) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
int i; |
||||
|
||||
|
||||
CheckInit(dev); |
||||
|
||||
blk = chunkInNAND/32; |
||||
pg = chunkInNAND%32; |
||||
|
||||
|
||||
for(i = 0; i < 528; i++) |
||||
{ |
||||
if(ramdisk.block[blk]->page[pg].data[i] != 0xFF) |
||||
{ |
||||
return YAFFS_FAIL; |
||||
} |
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
|
||||
} |
||||
|
||||
int yramdisk_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) |
||||
{ |
||||
|
||||
CheckInit(dev); |
||||
|
||||
if(blockNumber < 0 || blockNumber >= ramdisk.nBlocks) |
||||
{ |
||||
T(YAFFS_TRACE_ALWAYS,("Attempt to erase non-existant block %d\n",blockNumber)); |
||||
return YAFFS_FAIL; |
||||
} |
||||
else |
||||
{ |
||||
memset(ramdisk.block[blockNumber],0xFF,sizeof(yramdisk_Block)); |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
} |
||||
|
||||
int yramdisk_InitialiseNAND(yaffs_Device *dev) |
||||
{ |
||||
//dev->useNANDECC = 1; // force on useNANDECC which gets faked.
|
||||
// This saves us doing ECC checks.
|
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
@ -1,364 +0,0 @@ |
||||
/*
|
||||
* 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. |
||||
*/ |
||||
|
||||
/*
|
||||
* yaffs_ramem2k.c: RAM emulation in-kernel for 2K pages (YAFFS2) |
||||
*/ |
||||
|
||||
/* XXX U-BOOT XXX */ |
||||
#include <common.h> |
||||
|
||||
const char *yaffs_ramem2k_c_version = "$Id: yaffs_ramem2k.c,v 1.3 2007/02/14 01:09:06 wookey Exp $"; |
||||
|
||||
#ifndef __KERNEL__ |
||||
#define CONFIG_YAFFS_RAM_ENABLED |
||||
#else |
||||
#include <linux/config.h> |
||||
#endif |
||||
|
||||
#ifdef CONFIG_YAFFS_RAM_ENABLED |
||||
|
||||
#include "yportenv.h" |
||||
|
||||
#include "yaffs_nandemul2k.h" |
||||
#include "yaffs_guts.h" |
||||
#include "yaffsinterface.h" |
||||
#include "devextras.h" |
||||
#include "yaffs_packedtags2.h" |
||||
|
||||
|
||||
|
||||
#define EM_SIZE_IN_MEG (32) |
||||
#define PAGE_DATA_SIZE (2048) |
||||
#define PAGE_SPARE_SIZE (64) |
||||
#define PAGES_PER_BLOCK (64) |
||||
|
||||
|
||||
|
||||
#define EM_SIZE_IN_BYTES (EM_SIZE_IN_MEG * (1<<20)) |
||||
|
||||
#define PAGE_TOTAL_SIZE (PAGE_DATA_SIZE+PAGE_SPARE_SIZE) |
||||
|
||||
#define BLOCK_TOTAL_SIZE (PAGES_PER_BLOCK * PAGE_TOTAL_SIZE) |
||||
|
||||
#define BLOCKS_PER_MEG ((1<<20)/(PAGES_PER_BLOCK * PAGE_DATA_SIZE)) |
||||
|
||||
|
||||
typedef struct
|
||||
{ |
||||
__u8 data[PAGE_TOTAL_SIZE]; // Data + spare
|
||||
int empty; // is this empty?
|
||||
} nandemul_Page; |
||||
|
||||
|
||||
typedef struct |
||||
{ |
||||
nandemul_Page *page[PAGES_PER_BLOCK]; |
||||
int damaged;
|
||||
} nandemul_Block; |
||||
|
||||
|
||||
|
||||
typedef struct |
||||
{ |
||||
nandemul_Block**block; |
||||
int nBlocks; |
||||
} nandemul_Device; |
||||
|
||||
static nandemul_Device ned; |
||||
|
||||
static int sizeInMB = EM_SIZE_IN_MEG; |
||||
|
||||
|
||||
static void nandemul_yield(int n) |
||||
{ |
||||
#ifdef __KERNEL__ |
||||
if(n > 0) schedule_timeout(n); |
||||
#endif |
||||
|
||||
} |
||||
|
||||
|
||||
static void nandemul_ReallyEraseBlock(int blockNumber) |
||||
{ |
||||
int i; |
||||
|
||||
nandemul_Block *blk; |
||||
|
||||
if(blockNumber < 0 || blockNumber >= ned.nBlocks) |
||||
{ |
||||
return; |
||||
} |
||||
|
||||
blk = ned.block[blockNumber]; |
||||
|
||||
for(i = 0; i < PAGES_PER_BLOCK; i++) |
||||
{ |
||||
memset(blk->page[i],0xff,sizeof(nandemul_Page)); |
||||
blk->page[i]->empty = 1; |
||||
} |
||||
nandemul_yield(2); |
||||
} |
||||
|
||||
|
||||
static int nandemul2k_CalcNBlocks(void) |
||||
{ |
||||
return EM_SIZE_IN_MEG * BLOCKS_PER_MEG; |
||||
} |
||||
|
||||
|
||||
|
||||
static int CheckInit(void) |
||||
{ |
||||
static int initialised = 0; |
||||
|
||||
int i,j; |
||||
|
||||
int fail = 0; |
||||
int nBlocks;
|
||||
|
||||
int nAllocated = 0; |
||||
|
||||
if(initialised)
|
||||
{ |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
|
||||
ned.nBlocks = nBlocks = nandemul2k_CalcNBlocks(); |
||||
|
||||
|
||||
ned.block = YMALLOC(sizeof(nandemul_Block*) * nBlocks ); |
||||
|
||||
if(!ned.block) return YAFFS_FAIL; |
||||
|
||||
|
||||
|
||||
|
||||
|
||||
for(i=fail=0; i <nBlocks; i++) |
||||
{ |
||||
|
||||
nandemul_Block *blk; |
||||
|
||||
if(!(blk = ned.block[i] = YMALLOC(sizeof(nandemul_Block)))) |
||||
{ |
||||
fail = 1; |
||||
}
|
||||
else |
||||
{ |
||||
for(j = 0; j < PAGES_PER_BLOCK; j++) |
||||
{ |
||||
if((blk->page[j] = YMALLOC(sizeof(nandemul_Page))) == 0) |
||||
{ |
||||
fail = 1; |
||||
} |
||||
} |
||||
nandemul_ReallyEraseBlock(i); |
||||
ned.block[i]->damaged = 0; |
||||
nAllocated++; |
||||
} |
||||
} |
||||
|
||||
if(fail) |
||||
{ |
||||
//Todo thump pages
|
||||
|
||||
for(i = 0; i < nAllocated; i++) |
||||
{ |
||||
YFREE(ned.block[i]); |
||||
} |
||||
YFREE(ned.block); |
||||
|
||||
T(YAFFS_TRACE_ALWAYS,("Allocation failed, could only allocate %dMB of %dMB requested.\n", |
||||
nAllocated/64,sizeInMB)); |
||||
return 0; |
||||
} |
||||
|
||||
ned.nBlocks = nBlocks; |
||||
|
||||
initialised = 1; |
||||
|
||||
return 1; |
||||
} |
||||
|
||||
int nandemul2k_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_ExtendedTags *tags) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
int i; |
||||
|
||||
__u8 *x; |
||||
|
||||
|
||||
blk = chunkInNAND/PAGES_PER_BLOCK; |
||||
pg = chunkInNAND%PAGES_PER_BLOCK; |
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
x = ned.block[blk]->page[pg]->data; |
||||
|
||||
for(i = 0; i < PAGE_DATA_SIZE; i++) |
||||
{ |
||||
x[i] &=data[i]; |
||||
} |
||||
|
||||
ned.block[blk]->page[pg]->empty = 0; |
||||
} |
||||
|
||||
|
||||
if(tags) |
||||
{ |
||||
x = &ned.block[blk]->page[pg]->data[PAGE_DATA_SIZE]; |
||||
|
||||
yaffs_PackTags2((yaffs_PackedTags2 *)x,tags); |
||||
|
||||
} |
||||
|
||||
if(tags || data) |
||||
{ |
||||
nandemul_yield(1); |
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
|
||||
int nandemul2k_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
|
||||
__u8 *x; |
||||
|
||||
|
||||
|
||||
blk = chunkInNAND/PAGES_PER_BLOCK; |
||||
pg = chunkInNAND%PAGES_PER_BLOCK; |
||||
|
||||
|
||||
if(data) |
||||
{ |
||||
memcpy(data,ned.block[blk]->page[pg]->data,PAGE_DATA_SIZE); |
||||
} |
||||
|
||||
|
||||
if(tags) |
||||
{ |
||||
x = &ned.block[blk]->page[pg]->data[PAGE_DATA_SIZE]; |
||||
|
||||
yaffs_UnpackTags2(tags,(yaffs_PackedTags2 *)x); |
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
|
||||
static int nandemul2k_CheckChunkErased(yaffs_Device *dev,int chunkInNAND) |
||||
{ |
||||
int blk; |
||||
int pg; |
||||
int i; |
||||
|
||||
|
||||
|
||||
blk = chunkInNAND/PAGES_PER_BLOCK; |
||||
pg = chunkInNAND%PAGES_PER_BLOCK; |
||||
|
||||
|
||||
for(i = 0; i < PAGE_TOTAL_SIZE; i++) |
||||
{ |
||||
if(ned.block[blk]->page[pg]->data[i] != 0xFF) |
||||
{ |
||||
return YAFFS_FAIL; |
||||
} |
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
|
||||
} |
||||
|
||||
int nandemul2k_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) |
||||
{ |
||||
|
||||
|
||||
if(blockNumber < 0 || blockNumber >= ned.nBlocks) |
||||
{ |
||||
T(YAFFS_TRACE_ALWAYS,("Attempt to erase non-existant block %d\n",blockNumber)); |
||||
} |
||||
else if(ned.block[blockNumber]->damaged) |
||||
{ |
||||
T(YAFFS_TRACE_ALWAYS,("Attempt to erase damaged block %d\n",blockNumber)); |
||||
} |
||||
else |
||||
{ |
||||
nandemul_ReallyEraseBlock(blockNumber); |
||||
} |
||||
|
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
int nandemul2k_InitialiseNAND(yaffs_Device *dev) |
||||
{ |
||||
CheckInit(); |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) |
||||
{ |
||||
|
||||
__u8 *x; |
||||
|
||||
x = &ned.block[blockNo]->page[0]->data[PAGE_DATA_SIZE]; |
||||
|
||||
memset(x,0,sizeof(yaffs_PackedTags2)); |
||||
|
||||
|
||||
return YAFFS_OK; |
||||
|
||||
} |
||||
|
||||
int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, yaffs_BlockState *state, int *sequenceNumber) |
||||
{ |
||||
yaffs_ExtendedTags tags; |
||||
int chunkNo; |
||||
|
||||
*sequenceNumber = 0; |
||||
|
||||
chunkNo = blockNo * dev->nChunksPerBlock; |
||||
|
||||
nandemul2k_ReadChunkWithTagsFromNAND(dev,chunkNo,NULL,&tags); |
||||
if(tags.blockBad) |
||||
{ |
||||
*state = YAFFS_BLOCK_STATE_DEAD; |
||||
} |
||||
else if(!tags.chunkUsed) |
||||
{ |
||||
*state = YAFFS_BLOCK_STATE_EMPTY; |
||||
} |
||||
else if(tags.chunkUsed) |
||||
{ |
||||
*state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; |
||||
*sequenceNumber = tags.sequenceNumber; |
||||
} |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
int nandemul2k_GetBytesPerChunk(void) { return PAGE_DATA_SIZE;} |
||||
|
||||
int nandemul2k_GetChunksPerBlock(void) { return PAGES_PER_BLOCK; } |
||||
int nandemul2k_GetNumberOfBlocks(void) {return nandemul2k_CalcNBlocks();} |
||||
|
||||
|
||||
#endif //YAFFS_RAM_ENABLED
|
||||
@ -1,231 +0,0 @@ |
||||
/*
|
||||
* 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. |
||||
*/ |
||||
|
||||
/*
|
||||
* yaffscfg2k.c The configuration for the "direct" use of yaffs. |
||||
* |
||||
* This file is intended to be modified to your requirements. |
||||
* There is no need to redistribute this file. |
||||
*/ |
||||
|
||||
/* XXX U-BOOT XXX */ |
||||
#include <common.h> |
||||
|
||||
#include "yaffscfg.h" |
||||
#include "yaffsfs.h" |
||||
#include "yaffs_fileem2k.h" |
||||
#include "yaffs_nandemul2k.h" |
||||
|
||||
#include <errno.h> |
||||
|
||||
unsigned yaffs_traceMask =
|
||||
|
||||
YAFFS_TRACE_SCAN |
|
||||
YAFFS_TRACE_GC | YAFFS_TRACE_GC_DETAIL |
|
||||
YAFFS_TRACE_ERASE |
|
||||
YAFFS_TRACE_TRACING |
|
||||
YAFFS_TRACE_ALLOCATE |
|
||||
YAFFS_TRACE_CHECKPOINT | |
||||
YAFFS_TRACE_BAD_BLOCKS | |
||||
YAFFS_TRACE_VERIFY | |
||||
YAFFS_TRACE_VERIFY_NAND | |
||||
YAFFS_TRACE_VERIFY_FULL | |
||||
// (~0) |
|
||||
|
||||
0; |
||||
|
||||
|
||||
|
||||
void yaffsfs_SetError(int err) |
||||
{ |
||||
//Do whatever to set error
|
||||
errno = err; |
||||
} |
||||
|
||||
void yaffsfs_Lock(void) |
||||
{ |
||||
} |
||||
|
||||
void yaffsfs_Unlock(void) |
||||
{ |
||||
} |
||||
|
||||
__u32 yaffsfs_CurrentTime(void) |
||||
{ |
||||
return 0; |
||||
} |
||||
|
||||
|
||||
static int yaffs_kill_alloc = 0; |
||||
static size_t total_malloced = 0; |
||||
static size_t malloc_limit = 0 & 6000000; |
||||
|
||||
void *yaffs_malloc(size_t size) |
||||
{ |
||||
size_t this; |
||||
if(yaffs_kill_alloc) |
||||
return NULL; |
||||
if(malloc_limit && malloc_limit <(total_malloced + size) ) |
||||
return NULL; |
||||
|
||||
this = malloc(size); |
||||
if(this) |
||||
total_malloced += size; |
||||
return this; |
||||
} |
||||
|
||||
void yaffs_free(void *ptr) |
||||
{ |
||||
free(ptr); |
||||
} |
||||
|
||||
void yaffsfs_LocalInitialisation(void) |
||||
{ |
||||
// Define locking semaphore.
|
||||
} |
||||
|
||||
// Configuration for:
|
||||
// /ram 2MB ramdisk
|
||||
// /boot 2MB boot disk (flash)
|
||||
// /flash 14MB flash disk (flash)
|
||||
// NB Though /boot and /flash occupy the same physical device they
|
||||
// are still disticnt "yaffs_Devices. You may think of these as "partitions"
|
||||
// using non-overlapping areas in the same device.
|
||||
//
|
||||
|
||||
#include "yaffs_ramdisk.h" |
||||
#include "yaffs_flashif.h" |
||||
#include "yaffs_nandemul2k.h" |
||||
|
||||
static yaffs_Device ramDev; |
||||
static yaffs_Device bootDev; |
||||
static yaffs_Device flashDev; |
||||
static yaffs_Device ram2kDev; |
||||
|
||||
static yaffsfs_DeviceConfiguration yaffsfs_config[] = { |
||||
#if 0 |
||||
{ "/ram", &ramDev}, |
||||
{ "/boot", &bootDev}, |
||||
{ "/flash/", &flashDev}, |
||||
{ "/ram2k", &ram2kDev}, |
||||
{(void *)0,(void *)0} |
||||
#else |
||||
{ "/", &ramDev}, |
||||
{ "/flash/boot", &bootDev}, |
||||
{ "/flash/flash", &flashDev}, |
||||
{ "/ram2k", &ram2kDev}, |
||||
{(void *)0,(void *)0} /* Null entry to terminate list */ |
||||
#endif |
||||
}; |
||||
|
||||
|
||||
int yaffs_StartUp(void) |
||||
{ |
||||
// Stuff to configure YAFFS
|
||||
// Stuff to initialise anything special (eg lock semaphore).
|
||||
yaffsfs_LocalInitialisation(); |
||||
|
||||
// Set up devices
|
||||
// /ram
|
||||
memset(&ramDev,0,sizeof(ramDev)); |
||||
ramDev.nDataBytesPerChunk = 512; |
||||
ramDev.nChunksPerBlock = 32; |
||||
ramDev.nReservedBlocks = 2; // Set this smaller for RAM
|
||||
ramDev.startBlock = 0; // Can use block 0
|
||||
ramDev.endBlock = 127; // Last block in 2MB.
|
||||
//ramDev.useNANDECC = 1;
|
||||
ramDev.nShortOpCaches = 0; // Disable caching on this device.
|
||||
ramDev.genericDevice = (void *) 0; // Used to identify the device in fstat.
|
||||
ramDev.writeChunkWithTagsToNAND = yramdisk_WriteChunkWithTagsToNAND; |
||||
ramDev.readChunkWithTagsFromNAND = yramdisk_ReadChunkWithTagsFromNAND; |
||||
ramDev.eraseBlockInNAND = yramdisk_EraseBlockInNAND; |
||||
ramDev.initialiseNAND = yramdisk_InitialiseNAND; |
||||
|
||||
// /boot
|
||||
memset(&bootDev,0,sizeof(bootDev)); |
||||
bootDev.nDataBytesPerChunk = 512; |
||||
bootDev.nChunksPerBlock = 32; |
||||
bootDev.nReservedBlocks = 5; |
||||
bootDev.startBlock = 0; // Can use block 0
|
||||
bootDev.endBlock = 63; // Last block
|
||||
//bootDev.useNANDECC = 0; // use YAFFS's ECC
|
||||
bootDev.nShortOpCaches = 10; // Use caches
|
||||
bootDev.genericDevice = (void *) 1; // Used to identify the device in fstat.
|
||||
bootDev.writeChunkWithTagsToNAND = yflash_WriteChunkWithTagsToNAND; |
||||
bootDev.readChunkWithTagsFromNAND = yflash_ReadChunkWithTagsFromNAND; |
||||
bootDev.eraseBlockInNAND = yflash_EraseBlockInNAND; |
||||
bootDev.initialiseNAND = yflash_InitialiseNAND; |
||||
bootDev.markNANDBlockBad = yflash_MarkNANDBlockBad; |
||||
bootDev.queryNANDBlock = yflash_QueryNANDBlock; |
||||
|
||||
|
||||
|
||||
// /flash
|
||||
// Set this puppy up to use
|
||||
// the file emulation space as
|
||||
// 2kpage/64chunk per block/128MB device
|
||||
memset(&flashDev,0,sizeof(flashDev)); |
||||
|
||||
flashDev.nDataBytesPerChunk = 2048; |
||||
flashDev.nChunksPerBlock = 64; |
||||
flashDev.nReservedBlocks = 5; |
||||
flashDev.nCheckpointReservedBlocks = 5; |
||||
//flashDev.checkpointStartBlock = 1;
|
||||
//flashDev.checkpointEndBlock = 20;
|
||||
flashDev.startBlock = 0; |
||||
flashDev.endBlock = 200; // Make it smaller
|
||||
//flashDev.endBlock = yflash_GetNumberOfBlocks()-1;
|
||||
flashDev.isYaffs2 = 1; |
||||
flashDev.wideTnodesDisabled=0; |
||||
flashDev.nShortOpCaches = 10; // Use caches
|
||||
flashDev.genericDevice = (void *) 2; // Used to identify the device in fstat.
|
||||
flashDev.writeChunkWithTagsToNAND = yflash_WriteChunkWithTagsToNAND; |
||||
flashDev.readChunkWithTagsFromNAND = yflash_ReadChunkWithTagsFromNAND; |
||||
flashDev.eraseBlockInNAND = yflash_EraseBlockInNAND; |
||||
flashDev.initialiseNAND = yflash_InitialiseNAND; |
||||
flashDev.markNANDBlockBad = yflash_MarkNANDBlockBad; |
||||
flashDev.queryNANDBlock = yflash_QueryNANDBlock; |
||||
|
||||
// /ram2k
|
||||
// Set this puppy up to use
|
||||
// the file emulation space as
|
||||
// 2kpage/64chunk per block/128MB device
|
||||
memset(&ram2kDev,0,sizeof(ram2kDev)); |
||||
|
||||
ram2kDev.nDataBytesPerChunk = nandemul2k_GetBytesPerChunk(); |
||||
ram2kDev.nChunksPerBlock = nandemul2k_GetChunksPerBlock(); |
||||
ram2kDev.nReservedBlocks = 5; |
||||
ram2kDev.startBlock = 0; // First block after /boot
|
||||
//ram2kDev.endBlock = 127; // Last block in 16MB
|
||||
ram2kDev.endBlock = nandemul2k_GetNumberOfBlocks() - 1; // Last block in 512MB
|
||||
ram2kDev.isYaffs2 = 1; |
||||
ram2kDev.nShortOpCaches = 10; // Use caches
|
||||
ram2kDev.genericDevice = (void *) 3; // Used to identify the device in fstat.
|
||||
ram2kDev.writeChunkWithTagsToNAND = nandemul2k_WriteChunkWithTagsToNAND; |
||||
ram2kDev.readChunkWithTagsFromNAND = nandemul2k_ReadChunkWithTagsFromNAND; |
||||
ram2kDev.eraseBlockInNAND = nandemul2k_EraseBlockInNAND; |
||||
ram2kDev.initialiseNAND = nandemul2k_InitialiseNAND; |
||||
ram2kDev.markNANDBlockBad = nandemul2k_MarkNANDBlockBad; |
||||
ram2kDev.queryNANDBlock = nandemul2k_QueryNANDBlock; |
||||
|
||||
yaffs_initialise(yaffsfs_config); |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
|
||||
|
||||
void SetCheckpointReservedBlocks(int n) |
||||
{ |
||||
flashDev.nCheckpointReservedBlocks = n; |
||||
} |
||||
@ -1,65 +0,0 @@ |
||||
/*
|
||||
* 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__ */ |
||||
@ -1,33 +0,0 @@ |
||||
#Makefile for NANDemul MTD
|
||||
#
|
||||
# NB this is not yet suitable for putting into the kernel tree.
|
||||
# YAFFS: Yet another Flash File System. A NAND-flash specific file system.
|
||||
#
|
||||
# Copyright (C) 2002 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.
|
||||
|
||||
## Change or override KERNELDIR to your kernel
|
||||
## comment out USE_xxxx if you don't want these features.
|
||||
|
||||
KERNELDIR = /usr/src/kernel-headers-2.4.27
|
||||
|
||||
CFLAGS = -D__KERNEL__ -DMODULE -I$(KERNELDIR)/include -O2 -Wall -g
|
||||
|
||||
|
||||
|
||||
TARGET = nandemul2k.o
|
||||
|
||||
default: $(TARGET) |
||||
|
||||
clean: |
||||
rm -f $(TARGET)
|
||||
|
||||
$(TARGET): %.o: %.c |
||||
gcc -c $(CFLAGS) $< -o $@
|
||||
|
||||
@ -1,121 +0,0 @@ |
||||
#!/bin/sh |
||||
# |
||||
# YAFFS: Yet another FFS. A NAND-flash specific file system. |
||||
# |
||||
# Copyright (C) 2002-2006 Aleph One Ltd. |
||||
# |
||||
# 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. |
||||
# |
||||
# Patch YAFFS into the kernel |
||||
# |
||||
# args: kpath : Full path to kernel sources to be patched |
||||
# |
||||
# Somewhat "inspired by" the mtd patchin script |
||||
# |
||||
# $Id: patch-ker.sh,v 1.3 2007/07/25 01:04:38 charles Exp $ |
||||
|
||||
VERSION=0 |
||||
PATCHLEVEL=0 |
||||
SUBLEVEL=0 |
||||
COPYORLINK=$1 |
||||
LINUXDIR=$2 |
||||
|
||||
# To be a Linux directory, it must have a Makefile |
||||
|
||||
|
||||
# Display usage of this script |
||||
usage () { |
||||
echo "usage: $0 c/l kernelpath" |
||||
echo " if c/l is c, then copy. If l then link" |
||||
exit 1 |
||||
} |
||||
|
||||
|
||||
|
||||
if [ -z $LINUXDIR ] |
||||
then |
||||
usage; |
||||
fi |
||||
|
||||
if [ $COPYORLINK = l ]; then |
||||
CPY="ln -s" |
||||
elif [ $COPYORLINK = c ]; then |
||||
CPY="cp" |
||||
else |
||||
echo "unknown copy or link type" |
||||
usage; |
||||
fi |
||||
|
||||
|
||||
# Check if kerneldir contains a Makefile |
||||
if [ ! -f $LINUXDIR/Makefile ] |
||||
then |
||||
echo "Directory $LINUXDIR does not exist or is not a kernel source directory"; |
||||
exit 1; |
||||
fi |
||||
|
||||
# Get kernel version |
||||
VERSION=`grep -s VERSION <$LINUXDIR/Makefile | head -n 1 | sed s/'VERSION = '//` |
||||
PATCHLEVEL=`grep -s PATCHLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'PATCHLEVEL = '//` |
||||
SUBLEVEL=`grep -s SUBLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'SUBLEVEL = '//` |
||||
|
||||
# Can we handle this version? |
||||
if [ $VERSION -ne 2 -o $PATCHLEVEL -lt 6 ] |
||||
then |
||||
echo "Cannot patch kernel version $VERSION.$PATCHLEVEL.$SUBLEVEL, must be 2.6.x or higher" |
||||
exit 1; |
||||
fi |
||||
|
||||
|
||||
KCONFIG=$LINUXDIR/fs/Kconfig |
||||
KCONFIGOLD=$LINUXDIR/fs/Kconfig.pre.yaffs |
||||
YAFFS_PATCHED_STRING=`grep -s yaffs <$KCONFIG | head -n 1` |
||||
|
||||
MAKEFILE=$LINUXDIR/fs/Makefile |
||||
MAKEFILEOLD=$LINUXDIR/fs/Makefile.pre.yaffs |
||||
|
||||
if [ ! -z "$YAFFS_PATCHED_STRING" ] |
||||
then |
||||
YAFFS_PATCHED=0 |
||||
echo "$KCONFIG already mentions YAFFS, so we will not change it" |
||||
else |
||||
# Change the fs/Kconfig file |
||||
# Save the old Kconfig |
||||
# Copy all stuff up to JFFS |
||||
# Insert some YAFFS stuff |
||||
# Copy all the rest of the stuff |
||||
|
||||
YAFFS_PATCHED=1 |
||||
echo "Updating $KCONFIG" |
||||
mv -f $KCONFIG $KCONFIGOLD |
||||
sed -n -e "/JFFS/,99999 ! p" $KCONFIGOLD >$KCONFIG |
||||
echo "">>$KCONFIG |
||||
echo "# Patched by YAFFS" >>$KCONFIG |
||||
echo "source \"fs/yaffs2/Kconfig\"">>$KCONFIG |
||||
echo "">>$KCONFIG |
||||
sed -n -e "/JFFS/,99999 p" $KCONFIGOLD >>$KCONFIG |
||||
|
||||
# now do fs/Makefile -- simply add the target at the end |
||||
echo "Updating $MAKEFILE" |
||||
cp -f $MAKEFILE $MAKEFILEOLD |
||||
echo "">>$MAKEFILE |
||||
echo "# Patched by YAFFS" >>$MAKEFILE |
||||
echo "obj-\$(CONFIG_YAFFS_FS) += yaffs2/" >>$MAKEFILE |
||||
|
||||
fi |
||||
|
||||
YAFFSDIR=$LINUXDIR/fs/yaffs2 |
||||
|
||||
if [ -e $YAFFSDIR ] |
||||
then |
||||
echo "$YAFFSDIR exists, not patching" |
||||
else |
||||
mkdir $LINUXDIR/fs/yaffs2 |
||||
$CPY $PWD/Makefile.kernel $LINUXDIR/fs/yaffs2/Makefile |
||||
$CPY $PWD/Kconfig $LINUXDIR/fs/yaffs2 |
||||
$CPY $PWD/*.c $PWD/*.h $LINUXDIR/fs/yaffs2 |
||||
fi |
||||
@ -1,6 +0,0 @@ |
||||
This directory holds patches that are useful for Linux integration. |
||||
|
||||
Right now there is only one patched file, yaffs_mtdif2.c. This has been |
||||
patched with a tweaked version of "Sergey's patch" and typically makes a |
||||
stock mtd work properly. |
||||
|
||||
@ -1,258 +0,0 @@ |
||||
/*
|
||||
* YAFFS: Yet another FFS. A NAND-flash specific file system.
|
||||
* |
||||
* Copyright (C) 2002 Aleph One Ltd. |
||||
* for Toby Churchill Ltd and Brightstar Engineering |
||||
* |
||||
* Created by Charles Manning <charles@aleph1.co.uk> |
||||
* |
||||
* This program is free software; you can redistribute it and/or modify |
||||
* it under the terms of the GNU General Public License version 2 as |
||||
* published by the Free Software Foundation. |
||||
*/ |
||||
|
||||
/* mtd interface for YAFFS2 */ |
||||
|
||||
const char *yaffs_mtdif2_c_version = |
||||
"$Id: yaffs_mtdif2.c,v 1.2 2007/03/07 08:05:58 colin Exp $"; |
||||
|
||||
#include "yportenv.h" |
||||
|
||||
|
||||
#include "yaffs_mtdif2.h" |
||||
|
||||
#include "linux/mtd/mtd.h" |
||||
#include "linux/types.h" |
||||
#include "linux/time.h" |
||||
|
||||
#include "yaffs_packedtags2.h" |
||||
|
||||
|
||||
void nandmtd2_pt2buf(yaffs_Device *dev, yaffs_PackedTags2 *pt, int is_raw) |
||||
{ |
||||
struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); |
||||
__u8 *ptab = (__u8 *)pt; /* packed tags as bytes */ |
||||
|
||||
int i, j = 0, k, n; |
||||
|
||||
/* Pack buffer with 0xff */ |
||||
for (i = 0; i < mtd->oobsize; i++) |
||||
dev->spareBuffer[i] = 0xff; |
||||
|
||||
if(!is_raw){ |
||||
memcpy(dev->spareBuffer,pt,sizeof(yaffs_PackedTags2)); |
||||
} else { |
||||
j = 0; |
||||
k = mtd->oobinfo.oobfree[j][0]; |
||||
n = mtd->oobinfo.oobfree[j][1]; |
||||
|
||||
if (n == 0) { |
||||
T(YAFFS_TRACE_ERROR, (TSTR("No OOB space for tags" TENDSTR))); |
||||
YBUG(); |
||||
} |
||||
|
||||
for (i = 0; i < sizeof(yaffs_PackedTags2); i++) { |
||||
if (n == 0) { |
||||
j++; |
||||
k = mtd->oobinfo.oobfree[j][0]; |
||||
n = mtd->oobinfo.oobfree[j][1]; |
||||
if (n == 0) { |
||||
T(YAFFS_TRACE_ERROR, (TSTR("No OOB space for tags" TENDSTR))); |
||||
YBUG(); |
||||
} |
||||
} |
||||
dev->spareBuffer[k] = ptab[i]; |
||||
k++; |
||||
n--; |
||||
} |
||||
} |
||||
|
||||
} |
||||
|
||||
void nandmtd2_buf2pt(yaffs_Device *dev, yaffs_PackedTags2 *pt, int is_raw) |
||||
{ |
||||
struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); |
||||
int i, j = 0, k, n; |
||||
__u8 *ptab = (__u8 *)pt; /* packed tags as bytes */ |
||||
|
||||
|
||||
if (!is_raw) { |
||||
|
||||
memcpy(pt,dev->spareBuffer,sizeof(yaffs_PackedTags2)); |
||||
} else { |
||||
j = 0; |
||||
k = mtd->oobinfo.oobfree[j][0]; |
||||
n = mtd->oobinfo.oobfree[j][1]; |
||||
|
||||
if (n == 0) { |
||||
T(YAFFS_TRACE_ERROR, (TSTR("No space in OOB for tags" TENDSTR))); |
||||
YBUG(); |
||||
} |
||||
|
||||
for (i = 0; i < sizeof(yaffs_PackedTags2); i++) { |
||||
if (n == 0) { |
||||
j++; |
||||
k = mtd->oobinfo.oobfree[j][0]; |
||||
n = mtd->oobinfo.oobfree[j][1]; |
||||
if (n == 0) { |
||||
T(YAFFS_TRACE_ERROR, (TSTR("No space in OOB for tags" TENDSTR))); |
||||
YBUG(); |
||||
} |
||||
} |
||||
ptab[i] = dev->spareBuffer[k]; |
||||
k++; |
||||
n--; |
||||
} |
||||
} |
||||
|
||||
} |
||||
|
||||
int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, |
||||
const __u8 * data, |
||||
const yaffs_ExtendedTags * tags) |
||||
{ |
||||
struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); |
||||
size_t dummy; |
||||
int retval = 0; |
||||
|
||||
loff_t addr = ((loff_t) chunkInNAND) * dev->nBytesPerChunk; |
||||
|
||||
yaffs_PackedTags2 pt; |
||||
|
||||
T(YAFFS_TRACE_MTD, |
||||
(TSTR |
||||
("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" |
||||
TENDSTR), chunkInNAND, data, tags)); |
||||
|
||||
if (tags) { |
||||
yaffs_PackTags2(&pt, tags); |
||||
} |
||||
|
||||
if (data && tags) { |
||||
nandmtd2_pt2buf(dev, &pt, 0); |
||||
retval = |
||||
mtd->write_ecc(mtd, addr, dev->nBytesPerChunk, |
||||
&dummy, data, dev->spareBuffer, |
||||
NULL); |
||||
|
||||
} else { |
||||
|
||||
T(YAFFS_TRACE_ALWAYS, |
||||
(TSTR |
||||
("Write chunk with null tags or data!" TENDSTR))); |
||||
YBUG(); |
||||
} |
||||
|
||||
if (retval == 0) |
||||
return YAFFS_OK; |
||||
else |
||||
return YAFFS_FAIL; |
||||
} |
||||
|
||||
int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, |
||||
__u8 * data, yaffs_ExtendedTags * tags) |
||||
{ |
||||
struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); |
||||
size_t dummy; |
||||
int retval = 0; |
||||
|
||||
loff_t addr = ((loff_t) chunkInNAND) * dev->nBytesPerChunk; |
||||
|
||||
yaffs_PackedTags2 pt; |
||||
|
||||
T(YAFFS_TRACE_MTD, |
||||
(TSTR |
||||
("nandmtd2_ReadChunkWithTagsToNAND chunk %d data %p tags %p" |
||||
TENDSTR), chunkInNAND, data, tags)); |
||||
|
||||
if (0 && data && tags) { |
||||
retval = |
||||
mtd->read_ecc(mtd, addr, dev->nBytesPerChunk, |
||||
&dummy, data, dev->spareBuffer, |
||||
NULL); |
||||
nandmtd2_buf2pt(dev, &pt, 0); |
||||
} else { |
||||
if (data) |
||||
retval = |
||||
mtd->read(mtd, addr, dev->nBytesPerChunk, &dummy, |
||||
data); |
||||
if (tags) { |
||||
retval = |
||||
mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, |
||||
dev->spareBuffer); |
||||
nandmtd2_buf2pt(dev, &pt, 1); |
||||
} |
||||
} |
||||
|
||||
if (tags) |
||||
yaffs_UnpackTags2(tags, &pt); |
||||
|
||||
if (retval == 0) |
||||
return YAFFS_OK; |
||||
else |
||||
return YAFFS_FAIL; |
||||
} |
||||
|
||||
int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) |
||||
{ |
||||
struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); |
||||
int retval; |
||||
T(YAFFS_TRACE_MTD, |
||||
(TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo)); |
||||
|
||||
retval = |
||||
mtd->block_markbad(mtd, |
||||
blockNo * dev->nChunksPerBlock * |
||||
dev->nBytesPerChunk); |
||||
|
||||
if (retval == 0) |
||||
return YAFFS_OK; |
||||
else |
||||
return YAFFS_FAIL; |
||||
|
||||
} |
||||
|
||||
int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, |
||||
yaffs_BlockState * state, int *sequenceNumber) |
||||
{ |
||||
struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); |
||||
int retval; |
||||
|
||||
T(YAFFS_TRACE_MTD, |
||||
(TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo)); |
||||
retval = |
||||
mtd->block_isbad(mtd, |
||||
blockNo * dev->nChunksPerBlock * |
||||
dev->nBytesPerChunk); |
||||
|
||||
if (retval) { |
||||
T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); |
||||
|
||||
*state = YAFFS_BLOCK_STATE_DEAD; |
||||
*sequenceNumber = 0; |
||||
} else { |
||||
yaffs_ExtendedTags t; |
||||
nandmtd2_ReadChunkWithTagsFromNAND(dev, |
||||
blockNo * |
||||
dev->nChunksPerBlock, NULL, |
||||
&t); |
||||
|
||||
if (t.chunkUsed) { |
||||
*sequenceNumber = t.sequenceNumber; |
||||
*state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; |
||||
} else { |
||||
*sequenceNumber = 0; |
||||
*state = YAFFS_BLOCK_STATE_EMPTY; |
||||
} |
||||
|
||||
T(YAFFS_TRACE_MTD, |
||||
(TSTR("block is OK seq %d state %d" TENDSTR), *sequenceNumber, |
||||
*state)); |
||||
} |
||||
|
||||
if (retval == 0) |
||||
return YAFFS_OK; |
||||
else |
||||
return YAFFS_FAIL; |
||||
} |
||||
|
||||
@ -1,54 +0,0 @@ |
||||
#Makefile for mkyaffs
|
||||
#
|
||||
# NB this is not yet suitable for putting into the kernel tree.
|
||||
# YAFFS: Yet another Flash File System. A NAND-flash specific file system.
|
||||
#
|
||||
# Copyright (C) 2002 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.
|
||||
|
||||
## Change or override KERNELDIR to your kernel
|
||||
|
||||
#KERNELDIR = /usr/src/kernel-headers-2.4.18
|
||||
|
||||
CFLAGS = -I/usr/include -I.. -O2 -Wall -DCONFIG_YAFFS_UTIL
|
||||
CFLAGS+= -Wshadow -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Wmissing-declarations
|
||||
CFLAGS+= -Wmissing-prototypes -Wredundant-decls -Wnested-externs -Winline
|
||||
|
||||
## Change if you are using a cross-compiler
|
||||
MAKETOOLS =
|
||||
|
||||
CC=$(MAKETOOLS)gcc
|
||||
|
||||
COMMONLINKS = yaffs_ecc.c
|
||||
COMMONOBJS = $(COMMONLINKS:.c=.o)
|
||||
|
||||
MKYAFFSSOURCES = mkyaffsimage.c
|
||||
MKYAFFSIMAGEOBJS = $(MKYAFFSSOURCES:.c=.o)
|
||||
|
||||
MKYAFFS2SOURCES = mkyaffs2image.c
|
||||
MKYAFFS2LINKS = yaffs_packedtags2.c yaffs_tagsvalidity.c
|
||||
MKYAFFS2IMAGEOBJS = $(MKYAFFS2SOURCES:.c=.o) $(MKYAFFS2LINKS:.c=.o)
|
||||
|
||||
all: mkyaffsimage mkyaffs2image |
||||
|
||||
$(COMMONLINKS) $(MKYAFFSLINKS) $(MKYAFFS2LINKS): |
||||
ln -s ../$@ $@
|
||||
|
||||
$(COMMONOBJS) $(MKYAFFSIMAGEOBJS) $(MKYAFFS2IMAGEOBJS) : %.o: %.c |
||||
$(CC) -c $(CFLAGS) $< -o $@
|
||||
|
||||
mkyaffsimage: $(COMMONOBJS) $(MKYAFFSIMAGEOBJS) |
||||
$(CC) -o $@ $(COMMONOBJS) $(MKYAFFSIMAGEOBJS)
|
||||
|
||||
mkyaffs2image: $(COMMONOBJS) $(MKYAFFS2IMAGEOBJS) |
||||
$(CC) -o $@ $(COMMONOBJS) $(MKYAFFS2IMAGEOBJS)
|
||||
|
||||
|
||||
clean: |
||||
rm -f $(COMMONOBJS) $(MKYAFFSIMAGEOBJS) $(MKYAFFS2IMAGEOBJS) $(COMMONLINKS) $(MKYAFFSLINKS) $(MKYAFFS2LINKS) mkyaffsimage mkyaffs2image core
|
||||
@ -1,520 +0,0 @@ |
||||
/*
|
||||
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system. |
||||
* |
||||
* Copyright (C) 2002-2007 Aleph One Ltd. |
||||
* for Toby Churchill Ltd and Brightstar Engineering |
||||
* |
||||
* Created by Charles Manning <charles@aleph1.co.uk> |
||||
* Nick Bane modifications flagged NCB |
||||
* Endian handling patches by James Ng. |
||||
* mkyaffs2image hacks by NCB |
||||
* |
||||
* This program is free software; you can redistribute it and/or modify |
||||
* it under the terms of the GNU General Public License version 2 as |
||||
* published by the Free Software Foundation. |
||||
*/ |
||||
|
||||
/*
|
||||
* makeyaffs2image.c
|
||||
* |
||||
* Makes a YAFFS2 file system image that can be used to load up a file system. |
||||
* Uses default Linux MTD layout - change if you need something different. |
||||
*/ |
||||
|
||||
#include <stdlib.h> |
||||
#include <stdio.h> |
||||
#include <fcntl.h> |
||||
#include <sys/types.h> |
||||
#include <sys/stat.h> |
||||
#include <dirent.h> |
||||
#include <string.h> |
||||
#include <unistd.h> |
||||
#include "yaffs_ecc.h" |
||||
#include "yaffs_guts.h" |
||||
|
||||
#include "yaffs_tagsvalidity.h" |
||||
#include "yaffs_packedtags2.h" |
||||
|
||||
unsigned yaffs_traceMask=0; |
||||
|
||||
#define MAX_OBJECTS 10000 |
||||
|
||||
#define chunkSize 2048 |
||||
#define spareSize 64 |
||||
|
||||
const char * mkyaffsimage_c_version = "$Id: mkyaffs2image.c,v 1.4 2007/02/14 01:09:06 wookey Exp $"; |
||||
|
||||
|
||||
typedef struct |
||||
{ |
||||
dev_t dev; |
||||
ino_t ino; |
||||
int obj; |
||||
} objItem; |
||||
|
||||
|
||||
static objItem obj_list[MAX_OBJECTS]; |
||||
static int n_obj = 0; |
||||
static int obj_id = YAFFS_NOBJECT_BUCKETS + 1; |
||||
|
||||
static int nObjects, nDirectories, nPages; |
||||
|
||||
static int outFile; |
||||
|
||||
static int error; |
||||
|
||||
static int convert_endian = 0; |
||||
|
||||
static int obj_compare(const void *a, const void * b) |
||||
{ |
||||
objItem *oa, *ob; |
||||
|
||||
oa = (objItem *)a; |
||||
ob = (objItem *)b; |
||||
|
||||
if(oa->dev < ob->dev) return -1; |
||||
if(oa->dev > ob->dev) return 1; |
||||
if(oa->ino < ob->ino) return -1; |
||||
if(oa->ino > ob->ino) return 1; |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
|
||||
static void add_obj_to_list(dev_t dev, ino_t ino, int obj) |
||||
{ |
||||
if(n_obj < MAX_OBJECTS) |
||||
{ |
||||
obj_list[n_obj].dev = dev; |
||||
obj_list[n_obj].ino = ino; |
||||
obj_list[n_obj].obj = obj; |
||||
n_obj++; |
||||
qsort(obj_list,n_obj,sizeof(objItem),obj_compare); |
||||
|
||||
} |
||||
else |
||||
{ |
||||
// oops! not enough space in the object array
|
||||
fprintf(stderr,"Not enough space in object array\n"); |
||||
exit(2); |
||||
} |
||||
} |
||||
|
||||
|
||||
static int find_obj_in_list(dev_t dev, ino_t ino) |
||||
{ |
||||
objItem *i = NULL; |
||||
objItem test; |
||||
|
||||
test.dev = dev; |
||||
test.ino = ino; |
||||
|
||||
if(n_obj > 0) |
||||
{ |
||||
i = bsearch(&test,obj_list,n_obj,sizeof(objItem),obj_compare); |
||||
} |
||||
|
||||
if(i) |
||||
{ |
||||
return i->obj; |
||||
} |
||||
return -1; |
||||
} |
||||
|
||||
/* This little function converts a little endian tag to a big endian tag.
|
||||
* NOTE: The tag is not usable after this other than calculating the CRC |
||||
* with. |
||||
*/ |
||||
static void little_to_big_endian(yaffs_Tags *tagsPtr) |
||||
{ |
||||
#if 0 // FIXME NCB
|
||||
yaffs_TagsUnion * tags = (yaffs_TagsUnion* )tagsPtr; // Work in bytes.
|
||||
yaffs_TagsUnion temp; |
||||
|
||||
memset(&temp, 0, sizeof(temp)); |
||||
// Ick, I hate magic numbers.
|
||||
temp.asBytes[0] = ((tags->asBytes[2] & 0x0F) << 4) | ((tags->asBytes[1] & 0xF0) >> 4); |
||||
temp.asBytes[1] = ((tags->asBytes[1] & 0x0F) << 4) | ((tags->asBytes[0] & 0xF0) >> 4); |
||||
temp.asBytes[2] = ((tags->asBytes[0] & 0x0F) << 4) | ((tags->asBytes[2] & 0x30) >> 2) | ((tags->asBytes[3] & 0xC0) >> 6); |
||||
temp.asBytes[3] = ((tags->asBytes[3] & 0x3F) << 2) | ((tags->asBytes[2] & 0xC0) >> 6); |
||||
temp.asBytes[4] = ((tags->asBytes[6] & 0x03) << 6) | ((tags->asBytes[5] & 0xFC) >> 2); |
||||
temp.asBytes[5] = ((tags->asBytes[5] & 0x03) << 6) | ((tags->asBytes[4] & 0xFC) >> 2); |
||||
temp.asBytes[6] = ((tags->asBytes[4] & 0x03) << 6) | (tags->asBytes[7] & 0x3F); |
||||
temp.asBytes[7] = (tags->asBytes[6] & 0xFC) | ((tags->asBytes[7] & 0xC0) >> 6); |
||||
|
||||
// Now copy it back.
|
||||
tags->asBytes[0] = temp.asBytes[0]; |
||||
tags->asBytes[1] = temp.asBytes[1]; |
||||
tags->asBytes[2] = temp.asBytes[2]; |
||||
tags->asBytes[3] = temp.asBytes[3]; |
||||
tags->asBytes[4] = temp.asBytes[4]; |
||||
tags->asBytes[5] = temp.asBytes[5]; |
||||
tags->asBytes[6] = temp.asBytes[6]; |
||||
tags->asBytes[7] = temp.asBytes[7]; |
||||
#endif |
||||
} |
||||
|
||||
static int write_chunk(__u8 *data, __u32 objId, __u32 chunkId, __u32 nBytes) |
||||
{ |
||||
yaffs_ExtendedTags t; |
||||
yaffs_PackedTags2 pt; |
||||
|
||||
error = write(outFile,data,chunkSize); |
||||
if(error < 0) return error; |
||||
|
||||
yaffs_InitialiseTags(&t); |
||||
|
||||
t.chunkId = chunkId; |
||||
// t.serialNumber = 0;
|
||||
t.serialNumber = 1; // **CHECK**
|
||||
t.byteCount = nBytes; |
||||
t.objectId = objId; |
||||
|
||||
t.sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; |
||||
|
||||
// added NCB **CHECK**
|
||||
t.chunkUsed = 1; |
||||
|
||||
if (convert_endian) |
||||
{ |
||||
little_to_big_endian(&t); |
||||
} |
||||
|
||||
nPages++; |
||||
|
||||
yaffs_PackTags2(&pt,&t); |
||||
|
||||
// return write(outFile,&pt,sizeof(yaffs_PackedTags2));
|
||||
return write(outFile,&pt,spareSize); |
||||
|
||||
} |
||||
|
||||
#define SWAP32(x) ((((x) & 0x000000FF) << 24) | \ |
||||
(((x) & 0x0000FF00) << 8 ) | \
|
||||
(((x) & 0x00FF0000) >> 8 ) | \
|
||||
(((x) & 0xFF000000) >> 24)) |
||||
|
||||
#define SWAP16(x) ((((x) & 0x00FF) << 8) | \ |
||||
(((x) & 0xFF00) >> 8)) |
||||
|
||||
// This one is easier, since the types are more standard. No funky shifts here.
|
||||
static void object_header_little_to_big_endian(yaffs_ObjectHeader* oh) |
||||
{ |
||||
oh->type = SWAP32(oh->type); // GCC makes enums 32 bits.
|
||||
oh->parentObjectId = SWAP32(oh->parentObjectId); // int
|
||||
oh->sum__NoLongerUsed = SWAP16(oh->sum__NoLongerUsed); // __u16 - Not used, but done for completeness.
|
||||
// name = skip. Char array. Not swapped.
|
||||
oh->yst_mode = SWAP32(oh->yst_mode); |
||||
#ifdef CONFIG_YAFFS_WINCE // WinCE doesn't implement this, but we need to just in case.
|
||||
// In fact, WinCE would be *THE* place where this would be an issue!
|
||||
oh->notForWinCE[0] = SWAP32(oh->notForWinCE[0]); |
||||
oh->notForWinCE[1] = SWAP32(oh->notForWinCE[1]); |
||||
oh->notForWinCE[2] = SWAP32(oh->notForWinCE[2]); |
||||
oh->notForWinCE[3] = SWAP32(oh->notForWinCE[3]); |
||||
oh->notForWinCE[4] = SWAP32(oh->notForWinCE[4]); |
||||
#else |
||||
// Regular POSIX.
|
||||
oh->yst_uid = SWAP32(oh->yst_uid); |
||||
oh->yst_gid = SWAP32(oh->yst_gid); |
||||
oh->yst_atime = SWAP32(oh->yst_atime); |
||||
oh->yst_mtime = SWAP32(oh->yst_mtime); |
||||
oh->yst_ctime = SWAP32(oh->yst_ctime); |
||||
#endif |
||||
|
||||
oh->fileSize = SWAP32(oh->fileSize); // Aiee. An int... signed, at that!
|
||||
oh->equivalentObjectId = SWAP32(oh->equivalentObjectId); |
||||
// alias - char array.
|
||||
oh->yst_rdev = SWAP32(oh->yst_rdev); |
||||
|
||||
#ifdef CONFIG_YAFFS_WINCE |
||||
oh->win_ctime[0] = SWAP32(oh->win_ctime[0]); |
||||
oh->win_ctime[1] = SWAP32(oh->win_ctime[1]); |
||||
oh->win_atime[0] = SWAP32(oh->win_atime[0]); |
||||
oh->win_atime[1] = SWAP32(oh->win_atime[1]); |
||||
oh->win_mtime[0] = SWAP32(oh->win_mtime[0]); |
||||
oh->win_mtime[1] = SWAP32(oh->win_mtime[1]); |
||||
oh->roomToGrow[0] = SWAP32(oh->roomToGrow[0]); |
||||
oh->roomToGrow[1] = SWAP32(oh->roomToGrow[1]); |
||||
oh->roomToGrow[2] = SWAP32(oh->roomToGrow[2]); |
||||
oh->roomToGrow[3] = SWAP32(oh->roomToGrow[3]); |
||||
oh->roomToGrow[4] = SWAP32(oh->roomToGrow[4]); |
||||
oh->roomToGrow[5] = SWAP32(oh->roomToGrow[5]); |
||||
#else |
||||
oh->roomToGrow[0] = SWAP32(oh->roomToGrow[0]); |
||||
oh->roomToGrow[1] = SWAP32(oh->roomToGrow[1]); |
||||
oh->roomToGrow[2] = SWAP32(oh->roomToGrow[2]); |
||||
oh->roomToGrow[3] = SWAP32(oh->roomToGrow[3]); |
||||
oh->roomToGrow[4] = SWAP32(oh->roomToGrow[4]); |
||||
oh->roomToGrow[5] = SWAP32(oh->roomToGrow[5]); |
||||
oh->roomToGrow[6] = SWAP32(oh->roomToGrow[6]); |
||||
oh->roomToGrow[7] = SWAP32(oh->roomToGrow[7]); |
||||
oh->roomToGrow[8] = SWAP32(oh->roomToGrow[8]); |
||||
oh->roomToGrow[9] = SWAP32(oh->roomToGrow[9]); |
||||
oh->roomToGrow[10] = SWAP32(oh->roomToGrow[10]); |
||||
oh->roomToGrow[11] = SWAP32(oh->roomToGrow[11]); |
||||
#endif |
||||
} |
||||
|
||||
static int write_object_header(int objId, yaffs_ObjectType t, struct stat *s, int parent, const char *name, int equivalentObj, const char * alias) |
||||
{ |
||||
__u8 bytes[chunkSize]; |
||||
|
||||
|
||||
yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *)bytes; |
||||
|
||||
memset(bytes,0xff,sizeof(bytes)); |
||||
|
||||
oh->type = t; |
||||
|
||||
oh->parentObjectId = parent; |
||||
|
||||
strncpy(oh->name,name,YAFFS_MAX_NAME_LENGTH); |
||||
|
||||
|
||||
if(t != YAFFS_OBJECT_TYPE_HARDLINK) |
||||
{ |
||||
oh->yst_mode = s->st_mode; |
||||
oh->yst_uid = s->st_uid; |
||||
// NCB 12/9/02 oh->yst_gid = s->yst_uid;
|
||||
oh->yst_gid = s->st_gid; |
||||
oh->yst_atime = s->st_atime; |
||||
oh->yst_mtime = s->st_mtime; |
||||
oh->yst_ctime = s->st_ctime; |
||||
oh->yst_rdev = s->st_rdev; |
||||
} |
||||
|
||||
if(t == YAFFS_OBJECT_TYPE_FILE) |
||||
{ |
||||
oh->fileSize = s->st_size; |
||||
} |
||||
|
||||
if(t == YAFFS_OBJECT_TYPE_HARDLINK) |
||||
{ |
||||
oh->equivalentObjectId = equivalentObj; |
||||
} |
||||
|
||||
if(t == YAFFS_OBJECT_TYPE_SYMLINK) |
||||
{ |
||||
strncpy(oh->alias,alias,YAFFS_MAX_ALIAS_LENGTH); |
||||
} |
||||
|
||||
if (convert_endian) |
||||
{ |
||||
object_header_little_to_big_endian(oh); |
||||
} |
||||
|
||||
return write_chunk(bytes,objId,0,0xffff); |
||||
|
||||
} |
||||
|
||||
|
||||
static int process_directory(int parent, const char *path) |
||||
{ |
||||
|
||||
DIR *dir; |
||||
struct dirent *entry; |
||||
|
||||
nDirectories++; |
||||
|
||||
dir = opendir(path); |
||||
|
||||
if(dir) |
||||
{ |
||||
while((entry = readdir(dir)) != NULL) |
||||
{ |
||||
|
||||
/* Ignore . and .. */ |
||||
if(strcmp(entry->d_name,".") && |
||||
strcmp(entry->d_name,"..")) |
||||
{ |
||||
char full_name[500]; |
||||
struct stat stats; |
||||
int equivalentObj; |
||||
int newObj; |
||||
|
||||
sprintf(full_name,"%s/%s",path,entry->d_name); |
||||
|
||||
lstat(full_name,&stats); |
||||
|
||||
if(S_ISLNK(stats.st_mode) || |
||||
S_ISREG(stats.st_mode) || |
||||
S_ISDIR(stats.st_mode) || |
||||
S_ISFIFO(stats.st_mode) || |
||||
S_ISBLK(stats.st_mode) || |
||||
S_ISCHR(stats.st_mode) || |
||||
S_ISSOCK(stats.st_mode)) |
||||
{ |
||||
|
||||
newObj = obj_id++; |
||||
nObjects++; |
||||
|
||||
printf("Object %d, %s is a ",newObj,full_name); |
||||
|
||||
/* We're going to create an object for it */ |
||||
if((equivalentObj = find_obj_in_list(stats.st_dev, stats.st_ino)) > 0) |
||||
{ |
||||
/* we need to make a hard link */ |
||||
printf("hard link to object %d\n",equivalentObj); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_HARDLINK, &stats, parent, entry->d_name, equivalentObj, NULL); |
||||
} |
||||
else
|
||||
{ |
||||
|
||||
add_obj_to_list(stats.st_dev,stats.st_ino,newObj); |
||||
|
||||
if(S_ISLNK(stats.st_mode)) |
||||
{ |
||||
|
||||
char symname[500]; |
||||
|
||||
memset(symname,0, sizeof(symname)); |
||||
|
||||
readlink(full_name,symname,sizeof(symname) -1); |
||||
|
||||
printf("symlink to \"%s\"\n",symname); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SYMLINK, &stats, parent, entry->d_name, -1, symname); |
||||
|
||||
} |
||||
else if(S_ISREG(stats.st_mode)) |
||||
{ |
||||
printf("file, "); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_FILE, &stats, parent, entry->d_name, -1, NULL); |
||||
|
||||
if(error >= 0) |
||||
{ |
||||
int h; |
||||
__u8 bytes[chunkSize]; |
||||
int nBytes; |
||||
int chunk = 0; |
||||
|
||||
h = open(full_name,O_RDONLY); |
||||
if(h >= 0) |
||||
{ |
||||
memset(bytes,0xff,sizeof(bytes)); |
||||
while((nBytes = read(h,bytes,sizeof(bytes))) > 0) |
||||
{ |
||||
chunk++; |
||||
write_chunk(bytes,newObj,chunk,nBytes); |
||||
memset(bytes,0xff,sizeof(bytes)); |
||||
} |
||||
if(nBytes < 0)
|
||||
error = nBytes; |
||||
|
||||
printf("%d data chunks written\n",chunk); |
||||
} |
||||
else |
||||
{ |
||||
perror("Error opening file"); |
||||
} |
||||
close(h); |
||||
|
||||
}
|
||||
|
||||
} |
||||
else if(S_ISSOCK(stats.st_mode)) |
||||
{ |
||||
printf("socket\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISFIFO(stats.st_mode)) |
||||
{ |
||||
printf("fifo\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISCHR(stats.st_mode)) |
||||
{ |
||||
printf("character device\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISBLK(stats.st_mode)) |
||||
{ |
||||
printf("block device\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISDIR(stats.st_mode)) |
||||
{ |
||||
printf("directory\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_DIRECTORY, &stats, parent, entry->d_name, -1, NULL); |
||||
// NCB modified 10/9/2001 process_directory(1,full_name);
|
||||
process_directory(newObj,full_name); |
||||
} |
||||
} |
||||
} |
||||
else |
||||
{ |
||||
printf(" we don't handle this type\n"); |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
return 0; |
||||
|
||||
} |
||||
|
||||
|
||||
int main(int argc, char *argv[]) |
||||
{ |
||||
struct stat stats; |
||||
|
||||
printf("mkyaffs2image: image building tool for YAFFS2 built "__DATE__"\n"); |
||||
|
||||
if(argc < 3) |
||||
{ |
||||
printf("usage: mkyaffs2image dir image_file [convert]\n"); |
||||
printf(" dir the directory tree to be converted\n"); |
||||
printf(" image_file the output file to hold the image\n"); |
||||
printf(" 'convert' produce a big-endian image from a little-endian machine\n"); |
||||
exit(1); |
||||
} |
||||
|
||||
if ((argc == 4) && (!strncmp(argv[3], "convert", strlen("convert")))) |
||||
{ |
||||
convert_endian = 1; |
||||
} |
||||
|
||||
if(stat(argv[1],&stats) < 0) |
||||
{ |
||||
printf("Could not stat %s\n",argv[1]); |
||||
exit(1); |
||||
} |
||||
|
||||
if(!S_ISDIR(stats.st_mode)) |
||||
{ |
||||
printf(" %s is not a directory\n",argv[1]); |
||||
exit(1); |
||||
} |
||||
|
||||
outFile = open(argv[2],O_CREAT | O_TRUNC | O_WRONLY, S_IREAD | S_IWRITE); |
||||
|
||||
|
||||
if(outFile < 0) |
||||
{ |
||||
printf("Could not open output file %s\n",argv[2]); |
||||
exit(1); |
||||
} |
||||
|
||||
printf("Processing directory %s into image file %s\n",argv[1],argv[2]); |
||||
error = write_object_header(1, YAFFS_OBJECT_TYPE_DIRECTORY, &stats, 1,"", -1, NULL); |
||||
if(error) |
||||
error = process_directory(YAFFS_OBJECTID_ROOT,argv[1]); |
||||
|
||||
close(outFile); |
||||
|
||||
if(error < 0) |
||||
{ |
||||
perror("operation incomplete"); |
||||
exit(1); |
||||
} |
||||
else |
||||
{ |
||||
printf("Operation complete.\n" |
||||
"%d objects in %d directories\n" |
||||
"%d NAND pages\n",nObjects, nDirectories, nPages); |
||||
} |
||||
|
||||
close(outFile); |
||||
|
||||
exit(0); |
||||
}
|
||||
|
||||
@ -1,590 +0,0 @@ |
||||
/*
|
||||
* 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> |
||||
* Nick Bane modifications flagged NCB |
||||
* Endian handling patches by James Ng |
||||
* |
||||
* 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. |
||||
*/ |
||||
|
||||
/*
|
||||
* makeyaffsimage.c
|
||||
* |
||||
* Makes a YAFFS file system image that can be used to load up a file system. |
||||
*/ |
||||
|
||||
#include <stdlib.h> |
||||
#include <stdio.h> |
||||
#include <fcntl.h> |
||||
#include <sys/types.h> |
||||
#include <sys/stat.h> |
||||
#include <dirent.h> |
||||
#include <string.h> |
||||
#include <unistd.h> |
||||
#include "yaffs_ecc.h" |
||||
#include "yaffs_guts.h" |
||||
|
||||
|
||||
#define MAX_OBJECTS 10000 |
||||
|
||||
const char * mkyaffsimage_c_version = "$Id: mkyaffsimage.c,v 1.7 2003/07/16 03:00:48 charles Exp $"; |
||||
|
||||
|
||||
typedef struct |
||||
{ |
||||
dev_t dev; |
||||
ino_t ino; |
||||
int obj; |
||||
} objItem; |
||||
|
||||
|
||||
static objItem obj_list[MAX_OBJECTS]; |
||||
static int n_obj = 0; |
||||
static int obj_id = YAFFS_NOBJECT_BUCKETS + 1; |
||||
|
||||
static int nObjects, nDirectories, nPages; |
||||
|
||||
static int outFile; |
||||
|
||||
static int error; |
||||
|
||||
static int convert_endian = 0; |
||||
|
||||
static int obj_compare(const void *a, const void * b) |
||||
{ |
||||
objItem *oa, *ob; |
||||
|
||||
oa = (objItem *)a; |
||||
ob = (objItem *)b; |
||||
|
||||
if(oa->dev < ob->dev) return -1; |
||||
if(oa->dev > ob->dev) return 1; |
||||
if(oa->ino < ob->ino) return -1; |
||||
if(oa->ino > ob->ino) return 1; |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
|
||||
static void add_obj_to_list(dev_t dev, ino_t ino, int obj) |
||||
{ |
||||
if(n_obj < MAX_OBJECTS) |
||||
{ |
||||
obj_list[n_obj].dev = dev; |
||||
obj_list[n_obj].ino = ino; |
||||
obj_list[n_obj].obj = obj; |
||||
n_obj++; |
||||
qsort(obj_list,n_obj,sizeof(objItem),obj_compare); |
||||
|
||||
} |
||||
else |
||||
{ |
||||
// oops! not enough space in the object array
|
||||
fprintf(stderr,"Not enough space in object array\n"); |
||||
exit(2); |
||||
} |
||||
} |
||||
|
||||
|
||||
static int find_obj_in_list(dev_t dev, ino_t ino) |
||||
{ |
||||
objItem *i = NULL; |
||||
objItem test; |
||||
|
||||
test.dev = dev; |
||||
test.ino = ino; |
||||
|
||||
if(n_obj > 0) |
||||
{ |
||||
i = bsearch(&test,obj_list,n_obj,sizeof(objItem),obj_compare); |
||||
} |
||||
|
||||
if(i) |
||||
{ |
||||
return i->obj; |
||||
} |
||||
return -1; |
||||
} |
||||
|
||||
// NCB added 10/9/2002
|
||||
static __u16 yaffs_CalcNameSum(const char *name) |
||||
{ |
||||
__u16 sum = 0; |
||||
__u16 i = 1; |
||||
|
||||
__u8 *bname = (__u8 *)name; |
||||
|
||||
while (*bname) |
||||
{ |
||||
sum += (*bname) * i; |
||||
i++; |
||||
bname++; |
||||
} |
||||
return sum; |
||||
} |
||||
|
||||
|
||||
static void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare) |
||||
{ |
||||
yaffs_ECCCalculate(data , spare->ecc1); |
||||
yaffs_ECCCalculate(&data[256] , spare->ecc2); |
||||
} |
||||
|
||||
static void yaffs_CalcTagsECC(yaffs_Tags *tags) |
||||
{ |
||||
// Todo don't do anything yet. Need to calculate ecc
|
||||
unsigned char *b = ((yaffs_TagsUnion *)tags)->asBytes; |
||||
unsigned i,j; |
||||
unsigned ecc = 0; |
||||
unsigned bit = 0; |
||||
|
||||
// Clear ECC fields
|
||||
if (!convert_endian) |
||||
{ |
||||
tags->ecc = 0; |
||||
} |
||||
else |
||||
{ |
||||
// Because we're in "munged tag" mode, we have to clear it manually
|
||||
b[6] &= 0xC0; |
||||
b[7] &= 0x03; |
||||
} |
||||
|
||||
for(i = 0; i < 8; i++) |
||||
{ |
||||
// NCB modified 20-9-02 for(j = 1; j &0x7f; j<<=1)
|
||||
for(j = 1; j &0xff; j<<=1) |
||||
{ |
||||
bit++; |
||||
if(b[i] & j) |
||||
{ |
||||
ecc ^= bit; |
||||
} |
||||
} |
||||
} |
||||
|
||||
// Write out ECC
|
||||
if (!convert_endian) |
||||
{ |
||||
tags->ecc = ecc; |
||||
} |
||||
else |
||||
{ |
||||
// We have to munge the ECC again.
|
||||
b[6] |= ((ecc >> 6) & 0x3F); |
||||
b[7] |= ((ecc & 0x3F) << 2); |
||||
} |
||||
} |
||||
static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, yaffs_Tags *tagsPtr) |
||||
{ |
||||
yaffs_TagsUnion *tu = (yaffs_TagsUnion *)tagsPtr; |
||||
|
||||
//yaffs_CalcTagsECC(tagsPtr);
|
||||
|
||||
sparePtr->tagByte0 = tu->asBytes[0]; |
||||
sparePtr->tagByte1 = tu->asBytes[1]; |
||||
sparePtr->tagByte2 = tu->asBytes[2]; |
||||
sparePtr->tagByte3 = tu->asBytes[3]; |
||||
sparePtr->tagByte4 = tu->asBytes[4]; |
||||
sparePtr->tagByte5 = tu->asBytes[5]; |
||||
sparePtr->tagByte6 = tu->asBytes[6]; |
||||
sparePtr->tagByte7 = tu->asBytes[7]; |
||||
} |
||||
|
||||
/* This little function converts a little endian tag to a big endian tag.
|
||||
* NOTE: The tag is not usable after this other than calculating the CRC |
||||
* with. |
||||
*/ |
||||
static void little_to_big_endian(yaffs_Tags *tagsPtr) |
||||
{ |
||||
yaffs_TagsUnion * tags = (yaffs_TagsUnion* )tagsPtr; // Work in bytes.
|
||||
yaffs_TagsUnion temp; |
||||
|
||||
memset(&temp, 0, sizeof(temp)); |
||||
// Ick, I hate magic numbers.
|
||||
temp.asBytes[0] = ((tags->asBytes[2] & 0x0F) << 4) | ((tags->asBytes[1] & 0xF0) >> 4); |
||||
temp.asBytes[1] = ((tags->asBytes[1] & 0x0F) << 4) | ((tags->asBytes[0] & 0xF0) >> 4); |
||||
temp.asBytes[2] = ((tags->asBytes[0] & 0x0F) << 4) | ((tags->asBytes[2] & 0x30) >> 2) | ((tags->asBytes[3] & 0xC0) >> 6); |
||||
temp.asBytes[3] = ((tags->asBytes[3] & 0x3F) << 2) | ((tags->asBytes[2] & 0xC0) >> 6); |
||||
temp.asBytes[4] = ((tags->asBytes[6] & 0x03) << 6) | ((tags->asBytes[5] & 0xFC) >> 2); |
||||
temp.asBytes[5] = ((tags->asBytes[5] & 0x03) << 6) | ((tags->asBytes[4] & 0xFC) >> 2); |
||||
temp.asBytes[6] = ((tags->asBytes[4] & 0x03) << 6) | (tags->asBytes[7] & 0x3F); |
||||
temp.asBytes[7] = (tags->asBytes[6] & 0xFC) | ((tags->asBytes[7] & 0xC0) >> 6); |
||||
|
||||
// Now copy it back.
|
||||
tags->asBytes[0] = temp.asBytes[0]; |
||||
tags->asBytes[1] = temp.asBytes[1]; |
||||
tags->asBytes[2] = temp.asBytes[2]; |
||||
tags->asBytes[3] = temp.asBytes[3]; |
||||
tags->asBytes[4] = temp.asBytes[4]; |
||||
tags->asBytes[5] = temp.asBytes[5]; |
||||
tags->asBytes[6] = temp.asBytes[6]; |
||||
tags->asBytes[7] = temp.asBytes[7]; |
||||
} |
||||
|
||||
static int write_chunk(__u8 *data, __u32 objId, __u32 chunkId, __u32 nBytes) |
||||
{ |
||||
yaffs_Tags t; |
||||
yaffs_Spare s; |
||||
|
||||
error = write(outFile,data,512); |
||||
if(error < 0) return error; |
||||
|
||||
memset(&t,0xff,sizeof (yaffs_Tags)); |
||||
memset(&s,0xff,sizeof (yaffs_Spare)); |
||||
|
||||
t.chunkId = chunkId; |
||||
t.serialNumber = 0; |
||||
t.byteCount = nBytes; |
||||
t.objectId = objId; |
||||
|
||||
if (convert_endian) |
||||
{ |
||||
little_to_big_endian(&t); |
||||
} |
||||
|
||||
yaffs_CalcTagsECC(&t); |
||||
yaffs_LoadTagsIntoSpare(&s,&t); |
||||
yaffs_CalcECC(data,&s); |
||||
|
||||
nPages++; |
||||
|
||||
return write(outFile,&s,sizeof(yaffs_Spare)); |
||||
|
||||
} |
||||
|
||||
#define SWAP32(x) ((((x) & 0x000000FF) << 24) | \ |
||||
(((x) & 0x0000FF00) << 8 ) | \
|
||||
(((x) & 0x00FF0000) >> 8 ) | \
|
||||
(((x) & 0xFF000000) >> 24)) |
||||
|
||||
#define SWAP16(x) ((((x) & 0x00FF) << 8) | \ |
||||
(((x) & 0xFF00) >> 8)) |
||||
|
||||
// This one is easier, since the types are more standard. No funky shifts here.
|
||||
static void object_header_little_to_big_endian(yaffs_ObjectHeader* oh) |
||||
{ |
||||
oh->type = SWAP32(oh->type); // GCC makes enums 32 bits.
|
||||
oh->parentObjectId = SWAP32(oh->parentObjectId); // int
|
||||
oh->sum__NoLongerUsed = SWAP16(oh->sum__NoLongerUsed); // __u16 - Not used, but done for completeness.
|
||||
// name = skip. Char array. Not swapped.
|
||||
oh->yst_mode = SWAP32(oh->yst_mode); |
||||
#ifdef CONFIG_YAFFS_WINCE // WinCE doesn't implement this, but we need to just in case.
|
||||
// In fact, WinCE would be *THE* place where this would be an issue!
|
||||
oh->notForWinCE[0] = SWAP32(oh->notForWinCE[0]); |
||||
oh->notForWinCE[1] = SWAP32(oh->notForWinCE[1]); |
||||
oh->notForWinCE[2] = SWAP32(oh->notForWinCE[2]); |
||||
oh->notForWinCE[3] = SWAP32(oh->notForWinCE[3]); |
||||
oh->notForWinCE[4] = SWAP32(oh->notForWinCE[4]); |
||||
#else |
||||
// Regular POSIX.
|
||||
oh->yst_uid = SWAP32(oh->yst_uid); |
||||
oh->yst_gid = SWAP32(oh->yst_gid); |
||||
oh->yst_atime = SWAP32(oh->yst_atime); |
||||
oh->yst_mtime = SWAP32(oh->yst_mtime); |
||||
oh->yst_ctime = SWAP32(oh->yst_ctime); |
||||
#endif |
||||
|
||||
oh->fileSize = SWAP32(oh->fileSize); // Aiee. An int... signed, at that!
|
||||
oh->equivalentObjectId = SWAP32(oh->equivalentObjectId); |
||||
// alias - char array.
|
||||
oh->yst_rdev = SWAP32(oh->yst_rdev); |
||||
|
||||
#ifdef CONFIG_YAFFS_WINCE |
||||
oh->win_ctime[0] = SWAP32(oh->win_ctime[0]); |
||||
oh->win_ctime[1] = SWAP32(oh->win_ctime[1]); |
||||
oh->win_atime[0] = SWAP32(oh->win_atime[0]); |
||||
oh->win_atime[1] = SWAP32(oh->win_atime[1]); |
||||
oh->win_mtime[0] = SWAP32(oh->win_mtime[0]); |
||||
oh->win_mtime[1] = SWAP32(oh->win_mtime[1]); |
||||
oh->roomToGrow[0] = SWAP32(oh->roomToGrow[0]); |
||||
oh->roomToGrow[1] = SWAP32(oh->roomToGrow[1]); |
||||
oh->roomToGrow[2] = SWAP32(oh->roomToGrow[2]); |
||||
oh->roomToGrow[3] = SWAP32(oh->roomToGrow[3]); |
||||
oh->roomToGrow[4] = SWAP32(oh->roomToGrow[4]); |
||||
oh->roomToGrow[5] = SWAP32(oh->roomToGrow[5]); |
||||
#else |
||||
oh->roomToGrow[0] = SWAP32(oh->roomToGrow[0]); |
||||
oh->roomToGrow[1] = SWAP32(oh->roomToGrow[1]); |
||||
oh->roomToGrow[2] = SWAP32(oh->roomToGrow[2]); |
||||
oh->roomToGrow[3] = SWAP32(oh->roomToGrow[3]); |
||||
oh->roomToGrow[4] = SWAP32(oh->roomToGrow[4]); |
||||
oh->roomToGrow[5] = SWAP32(oh->roomToGrow[5]); |
||||
oh->roomToGrow[6] = SWAP32(oh->roomToGrow[6]); |
||||
oh->roomToGrow[7] = SWAP32(oh->roomToGrow[7]); |
||||
oh->roomToGrow[8] = SWAP32(oh->roomToGrow[8]); |
||||
oh->roomToGrow[9] = SWAP32(oh->roomToGrow[9]); |
||||
oh->roomToGrow[10] = SWAP32(oh->roomToGrow[10]); |
||||
oh->roomToGrow[11] = SWAP32(oh->roomToGrow[11]); |
||||
#endif |
||||
} |
||||
|
||||
static int write_object_header(int objId, yaffs_ObjectType t, struct stat *s, int parent, const char *name, int equivalentObj, const char * alias) |
||||
{ |
||||
__u8 bytes[512]; |
||||
|
||||
|
||||
yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *)bytes; |
||||
|
||||
memset(bytes,0xff,512); |
||||
|
||||
oh->type = t; |
||||
|
||||
oh->parentObjectId = parent; |
||||
|
||||
strncpy(oh->name,name,YAFFS_MAX_NAME_LENGTH); |
||||
|
||||
|
||||
if(t != YAFFS_OBJECT_TYPE_HARDLINK) |
||||
{ |
||||
oh->yst_mode = s->st_mode; |
||||
oh->yst_uid = s->st_uid; |
||||
// NCB 12/9/02 oh->yst_gid = s->yst_uid;
|
||||
oh->yst_gid = s->st_gid; |
||||
oh->yst_atime = s->st_atime; |
||||
oh->yst_mtime = s->st_mtime; |
||||
oh->yst_ctime = s->st_ctime; |
||||
oh->yst_rdev = s->st_rdev; |
||||
} |
||||
|
||||
if(t == YAFFS_OBJECT_TYPE_FILE) |
||||
{ |
||||
oh->fileSize = s->st_size; |
||||
} |
||||
|
||||
if(t == YAFFS_OBJECT_TYPE_HARDLINK) |
||||
{ |
||||
oh->equivalentObjectId = equivalentObj; |
||||
} |
||||
|
||||
if(t == YAFFS_OBJECT_TYPE_SYMLINK) |
||||
{ |
||||
strncpy(oh->alias,alias,YAFFS_MAX_ALIAS_LENGTH); |
||||
} |
||||
|
||||
if (convert_endian) |
||||
{ |
||||
object_header_little_to_big_endian(oh); |
||||
} |
||||
|
||||
return write_chunk(bytes,objId,0,0xffff); |
||||
|
||||
} |
||||
|
||||
|
||||
static int process_directory(int parent, const char *path) |
||||
{ |
||||
|
||||
DIR *dir; |
||||
struct dirent *entry; |
||||
|
||||
nDirectories++; |
||||
|
||||
dir = opendir(path); |
||||
|
||||
if(dir) |
||||
{ |
||||
while((entry = readdir(dir)) != NULL) |
||||
{ |
||||
|
||||
/* Ignore . and .. */ |
||||
if(strcmp(entry->d_name,".") && |
||||
strcmp(entry->d_name,"..")) |
||||
{ |
||||
char full_name[500]; |
||||
struct stat stats; |
||||
int equivalentObj; |
||||
int newObj; |
||||
|
||||
sprintf(full_name,"%s/%s",path,entry->d_name); |
||||
|
||||
lstat(full_name,&stats); |
||||
|
||||
if(S_ISLNK(stats.st_mode) || |
||||
S_ISREG(stats.st_mode) || |
||||
S_ISDIR(stats.st_mode) || |
||||
S_ISFIFO(stats.st_mode) || |
||||
S_ISBLK(stats.st_mode) || |
||||
S_ISCHR(stats.st_mode) || |
||||
S_ISSOCK(stats.st_mode)) |
||||
{ |
||||
|
||||
newObj = obj_id++; |
||||
nObjects++; |
||||
|
||||
printf("Object %d, %s is a ",newObj,full_name); |
||||
|
||||
/* We're going to create an object for it */ |
||||
if((equivalentObj = find_obj_in_list(stats.st_dev, stats.st_ino)) > 0) |
||||
{ |
||||
/* we need to make a hard link */ |
||||
printf("hard link to object %d\n",equivalentObj); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_HARDLINK, &stats, parent, entry->d_name, equivalentObj, NULL); |
||||
} |
||||
else
|
||||
{ |
||||
|
||||
add_obj_to_list(stats.st_dev,stats.st_ino,newObj); |
||||
|
||||
if(S_ISLNK(stats.st_mode)) |
||||
{ |
||||
|
||||
char symname[500]; |
||||
|
||||
memset(symname,0, sizeof(symname)); |
||||
|
||||
readlink(full_name,symname,sizeof(symname) -1); |
||||
|
||||
printf("symlink to \"%s\"\n",symname); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SYMLINK, &stats, parent, entry->d_name, -1, symname); |
||||
|
||||
} |
||||
else if(S_ISREG(stats.st_mode)) |
||||
{ |
||||
printf("file, "); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_FILE, &stats, parent, entry->d_name, -1, NULL); |
||||
|
||||
if(error >= 0) |
||||
{ |
||||
int h; |
||||
__u8 bytes[512]; |
||||
int nBytes; |
||||
int chunk = 0; |
||||
|
||||
h = open(full_name,O_RDONLY); |
||||
if(h >= 0) |
||||
{ |
||||
memset(bytes,0xff,512); |
||||
while((nBytes = read(h,bytes,512)) > 0) |
||||
{ |
||||
chunk++; |
||||
write_chunk(bytes,newObj,chunk,nBytes); |
||||
memset(bytes,0xff,512); |
||||
} |
||||
if(nBytes < 0)
|
||||
error = nBytes; |
||||
|
||||
printf("%d data chunks written\n",chunk); |
||||
} |
||||
else |
||||
{ |
||||
perror("Error opening file"); |
||||
} |
||||
close(h); |
||||
|
||||
}
|
||||
|
||||
} |
||||
else if(S_ISSOCK(stats.st_mode)) |
||||
{ |
||||
printf("socket\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISFIFO(stats.st_mode)) |
||||
{ |
||||
printf("fifo\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISCHR(stats.st_mode)) |
||||
{ |
||||
printf("character device\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISBLK(stats.st_mode)) |
||||
{ |
||||
printf("block device\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL); |
||||
} |
||||
else if(S_ISDIR(stats.st_mode)) |
||||
{ |
||||
printf("directory\n"); |
||||
error = write_object_header(newObj, YAFFS_OBJECT_TYPE_DIRECTORY, &stats, parent, entry->d_name, -1, NULL); |
||||
// NCB modified 10/9/2001 process_directory(1,full_name);
|
||||
process_directory(newObj,full_name); |
||||
} |
||||
} |
||||
} |
||||
else |
||||
{ |
||||
printf(" we don't handle this type\n"); |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
return 0; |
||||
|
||||
} |
||||
|
||||
|
||||
int main(int argc, char *argv[]) |
||||
{ |
||||
struct stat stats; |
||||
|
||||
printf("mkyaffsimage: image building tool for YAFFS built "__DATE__"\n"); |
||||
|
||||
if(argc < 3) |
||||
{ |
||||
printf("usage: mkyaffsimage dir image_file [convert]\n"); |
||||
printf(" dir the directory tree to be converted\n"); |
||||
printf(" image_file the output file to hold the image\n"); |
||||
printf(" 'convert' produce a big-endian image from a little-endian machine\n"); |
||||
exit(1); |
||||
} |
||||
|
||||
if ((argc == 4) && (!strncmp(argv[3], "convert", strlen("convert")))) |
||||
{ |
||||
convert_endian = 1; |
||||
} |
||||
|
||||
if(stat(argv[1],&stats) < 0) |
||||
{ |
||||
printf("Could not stat %s\n",argv[1]); |
||||
exit(1); |
||||
} |
||||
|
||||
if(!S_ISDIR(stats.st_mode)) |
||||
{ |
||||
printf(" %s is not a directory\n",argv[1]); |
||||
exit(1); |
||||
} |
||||
|
||||
outFile = open(argv[2],O_CREAT | O_TRUNC | O_WRONLY, S_IREAD | S_IWRITE); |
||||
|
||||
|
||||
if(outFile < 0) |
||||
{ |
||||
printf("Could not open output file %s\n",argv[2]); |
||||
exit(1); |
||||
} |
||||
|
||||
printf("Processing directory %s into image file %s\n",argv[1],argv[2]); |
||||
error = write_object_header(1, YAFFS_OBJECT_TYPE_DIRECTORY, &stats, 1,"", -1, NULL); |
||||
if(error) |
||||
error = process_directory(YAFFS_OBJECTID_ROOT,argv[1]); |
||||
|
||||
close(outFile); |
||||
|
||||
if(error < 0) |
||||
{ |
||||
perror("operation incomplete"); |
||||
exit(1); |
||||
} |
||||
else |
||||
{ |
||||
printf("Operation complete.\n" |
||||
"%d objects in %d directories\n" |
||||
"%d NAND pages\n",nObjects, nDirectories, nPages); |
||||
} |
||||
|
||||
close(outFile); |
||||
|
||||
exit(0); |
||||
}
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -1,369 +0,0 @@ |
||||
/*
|
||||
* YAFFS: Yet another FFS. A NAND-flash specific file system. |
||||
* yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. |
||||
* |
||||
* Copyright (C) 2002 Aleph One Ltd. |
||||
* for Toby Churchill Ltd and Brightstar Engineering |
||||
* |
||||
* 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 module provides the interface between yaffs_nand.c and the |
||||
* MTD API. This version is used when the MTD interface supports the |
||||
* 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, |
||||
* and we have small-page NAND device. |
||||
* |
||||
* These functions are invoked via function pointers in yaffs_nand.c. |
||||
* This replaces functionality provided by functions in yaffs_mtdif.c |
||||
* and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are |
||||
* called in yaffs_mtdif.c when the function pointers are NULL. |
||||
* We assume the MTD layer is performing ECC (useNANDECC is true). |
||||
*/ |
||||
|
||||
#include "yportenv.h" |
||||
#include "yaffs_guts.h" |
||||
#include "yaffs_packedtags1.h" |
||||
#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC |
||||
|
||||
#include "linux/kernel.h" |
||||
#include "linux/version.h" |
||||
#include "linux/types.h" |
||||
#include "linux/mtd/mtd.h" |
||||
|
||||
/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ |
||||
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) |
||||
|
||||
const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.5 2007/10/29 14:59:57 imcd Exp $"; |
||||
|
||||
#ifndef CONFIG_YAFFS_9BYTE_TAGS |
||||
# define YTAG1_SIZE 8 |
||||
#else |
||||
# define YTAG1_SIZE 9 |
||||
#endif |
||||
|
||||
#if 0 |
||||
/* Use the following nand_ecclayout with MTD when using
|
||||
* CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. |
||||
* If you have existing Yaffs images and the byte order differs from this, |
||||
* adjust 'oobfree' to match your existing Yaffs data. |
||||
* |
||||
* This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the |
||||
* pageStatus byte (at NAND spare offset 4) scattered/gathered from/to |
||||
* the 9th byte. |
||||
* |
||||
* Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 |
||||
* We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P |
||||
* where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus |
||||
* byte and B is the small-page bad-block indicator byte. |
||||
*/ |
||||
static struct nand_ecclayout nand_oob_16 = { |
||||
.eccbytes = 6, |
||||
.eccpos = { 8, 9, 10, 13, 14, 15 }, |
||||
.oobavail = 9, |
||||
.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } |
||||
}; |
||||
#endif |
||||
|
||||
/* Write a chunk (page) of data to NAND.
|
||||
* |
||||
* Caller always provides ExtendedTags data which are converted to a more |
||||
* compact (packed) form for storage in NAND. A mini-ECC runs over the |
||||
* contents of the tags meta-data; used to valid the tags when read. |
||||
* |
||||
* - Pack ExtendedTags to PackedTags1 form |
||||
* - Compute mini-ECC for PackedTags1 |
||||
* - Write data and packed tags to NAND. |
||||
* |
||||
* Note: Due to the use of the PackedTags1 meta-data which does not include |
||||
* a full sequence number (as found in the larger PackedTags2 form) it is |
||||
* necessary for Yaffs to re-write a chunk/page (just once) to mark it as |
||||
* discarded and dirty. This is not ideal: newer NAND parts are supposed |
||||
* to be written just once. When Yaffs performs this operation, this |
||||
* function is called with a NULL data pointer -- calling MTD write_oob |
||||
* without data is valid usage (2.6.17). |
||||
* |
||||
* Any underlying MTD error results in YAFFS_FAIL. |
||||
* Returns YAFFS_OK or YAFFS_FAIL. |
||||
*/ |
||||
int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, |
||||
int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) |
||||
{ |
||||
struct mtd_info * mtd = dev->genericDevice; |
||||
int chunkBytes = dev->nDataBytesPerChunk; |
||||
loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; |
||||
struct mtd_oob_ops ops; |
||||
yaffs_PackedTags1 pt1; |
||||
int retval; |
||||
|
||||
/* we assume that PackedTags1 and yaffs_Tags are compatible */ |
||||
compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); |
||||
compile_time_assertion(sizeof(yaffs_Tags) == 8); |
||||
|
||||
dev->nPageWrites++; |
||||
|
||||
yaffs_PackTags1(&pt1, etags); |
||||
yaffs_CalcTagsECC((yaffs_Tags *)&pt1); |
||||
|
||||
/* When deleting a chunk, the upper layer provides only skeletal
|
||||
* etags, one with chunkDeleted set. However, we need to update the |
||||
* tags, not erase them completely. So we use the NAND write property |
||||
* that only zeroed-bits stick and set tag bytes to all-ones and |
||||
* zero just the (not) deleted bit. |
||||
*/ |
||||
#ifndef CONFIG_YAFFS_9BYTE_TAGS |
||||
if (etags->chunkDeleted) { |
||||
memset(&pt1, 0xff, 8); |
||||
/* clear delete status bit to indicate deleted */ |
||||
pt1.deleted = 0; |
||||
} |
||||
#else |
||||
((__u8 *)&pt1)[8] = 0xff; |
||||
if (etags->chunkDeleted) { |
||||
memset(&pt1, 0xff, 8); |
||||
/* zero pageStatus byte to indicate deleted */ |
||||
((__u8 *)&pt1)[8] = 0; |
||||
} |
||||
#endif |
||||
|
||||
memset(&ops, 0, sizeof(ops)); |
||||
ops.mode = MTD_OOB_AUTO; |
||||
ops.len = (data) ? chunkBytes : 0; |
||||
ops.ooblen = YTAG1_SIZE; |
||||
ops.datbuf = (__u8 *)data; |
||||
ops.oobbuf = (__u8 *)&pt1; |
||||
|
||||
retval = mtd->write_oob(mtd, addr, &ops); |
||||
if (retval) { |
||||
yaffs_trace(YAFFS_TRACE_MTD, |
||||
"write_oob failed, chunk %d, mtd error %d\n", |
||||
chunkInNAND, retval); |
||||
} |
||||
return retval ? YAFFS_FAIL : YAFFS_OK; |
||||
} |
||||
|
||||
/* Return with empty ExtendedTags but add eccResult.
|
||||
*/ |
||||
static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) |
||||
{ |
||||
if (etags) { |
||||
memset(etags, 0, sizeof(*etags)); |
||||
etags->eccResult = eccResult; |
||||
} |
||||
return retval; |
||||
} |
||||
|
||||
/* Read a chunk (page) from NAND.
|
||||
* |
||||
* Caller expects ExtendedTags data to be usable even on error; that is, |
||||
* all members except eccResult and blockBad are zeroed. |
||||
* |
||||
* - Check ECC results for data (if applicable) |
||||
* - Check for blank/erased block (return empty ExtendedTags if blank) |
||||
* - Check the PackedTags1 mini-ECC (correct if necessary/possible) |
||||
* - Convert PackedTags1 to ExtendedTags |
||||
* - Update eccResult and blockBad members to refect state. |
||||
* |
||||
* Returns YAFFS_OK or YAFFS_FAIL. |
||||
*/ |
||||
int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, |
||||
int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) |
||||
{ |
||||
struct mtd_info * mtd = dev->genericDevice; |
||||
int chunkBytes = dev->nDataBytesPerChunk; |
||||
loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; |
||||
int eccres = YAFFS_ECC_RESULT_NO_ERROR; |
||||
struct mtd_oob_ops ops; |
||||
yaffs_PackedTags1 pt1; |
||||
int retval; |
||||
int deleted; |
||||
|
||||
dev->nPageReads++; |
||||
|
||||
memset(&ops, 0, sizeof(ops)); |
||||
ops.mode = MTD_OOB_AUTO; |
||||
ops.len = (data) ? chunkBytes : 0; |
||||
ops.ooblen = YTAG1_SIZE; |
||||
ops.datbuf = data; |
||||
ops.oobbuf = (__u8 *)&pt1; |
||||
|
||||
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) |
||||
/* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
|
||||
* help it out with ops.len = ops.ooblen when ops.datbuf == NULL. |
||||
*/ |
||||
ops.len = (ops.datbuf) ? ops.len : ops.ooblen; |
||||
#endif |
||||
/* Read page and oob using MTD.
|
||||
* Check status and determine ECC result. |
||||
*/ |
||||
retval = mtd->read_oob(mtd, addr, &ops); |
||||
if (retval) { |
||||
yaffs_trace(YAFFS_TRACE_MTD, |
||||
"read_oob failed, chunk %d, mtd error %d\n", |
||||
chunkInNAND, retval); |
||||
} |
||||
|
||||
switch (retval) { |
||||
case 0: |
||||
/* no error */ |
||||
break; |
||||
|
||||
case -EUCLEAN: |
||||
/* MTD's ECC fixed the data */ |
||||
eccres = YAFFS_ECC_RESULT_FIXED; |
||||
dev->eccFixed++; |
||||
break; |
||||
|
||||
case -EBADMSG: |
||||
/* MTD's ECC could not fix the data */ |
||||
dev->eccUnfixed++; |
||||
/* fall into... */ |
||||
default: |
||||
rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); |
||||
etags->blockBad = (mtd->block_isbad)(mtd, addr); |
||||
return YAFFS_FAIL; |
||||
} |
||||
|
||||
/* Check for a blank/erased chunk.
|
||||
*/ |
||||
if (yaffs_CheckFF((__u8 *)&pt1, 8)) { |
||||
/* when blank, upper layers want eccResult to be <= NO_ERROR */ |
||||
return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); |
||||
} |
||||
|
||||
#ifndef CONFIG_YAFFS_9BYTE_TAGS |
||||
/* Read deleted status (bit) then return it to it's non-deleted
|
||||
* state before performing tags mini-ECC check. pt1.deleted is |
||||
* inverted. |
||||
*/ |
||||
deleted = !pt1.deleted; |
||||
pt1.deleted = 1; |
||||
#else |
||||
deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); |
||||
#endif |
||||
|
||||
/* Check the packed tags mini-ECC and correct if necessary/possible.
|
||||
*/ |
||||
retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); |
||||
switch (retval) { |
||||
case 0: |
||||
/* no tags error, use MTD result */ |
||||
break; |
||||
case 1: |
||||
/* recovered tags-ECC error */ |
||||
dev->tagsEccFixed++; |
||||
if (eccres == YAFFS_ECC_RESULT_NO_ERROR) |
||||
eccres = YAFFS_ECC_RESULT_FIXED; |
||||
break; |
||||
default: |
||||
/* unrecovered tags-ECC error */ |
||||
dev->tagsEccUnfixed++; |
||||
return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); |
||||
} |
||||
|
||||
/* Unpack the tags to extended form and set ECC result.
|
||||
* [set shouldBeFF just to keep yaffs_UnpackTags1 happy] |
||||
*/ |
||||
pt1.shouldBeFF = 0xFFFFFFFF; |
||||
yaffs_UnpackTags1(etags, &pt1); |
||||
etags->eccResult = eccres; |
||||
|
||||
/* Set deleted state */ |
||||
etags->chunkDeleted = deleted; |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
/* Mark a block bad.
|
||||
* |
||||
* This is a persistant state. |
||||
* Use of this function should be rare. |
||||
* |
||||
* Returns YAFFS_OK or YAFFS_FAIL. |
||||
*/ |
||||
int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) |
||||
{ |
||||
struct mtd_info * mtd = dev->genericDevice; |
||||
int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; |
||||
int retval; |
||||
|
||||
yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo); |
||||
|
||||
retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); |
||||
return (retval) ? YAFFS_FAIL : YAFFS_OK; |
||||
} |
||||
|
||||
/* Check any MTD prerequists.
|
||||
*
|
||||
* Returns YAFFS_OK or YAFFS_FAIL. |
||||
*/ |
||||
static int nandmtd1_TestPrerequists(struct mtd_info * mtd) |
||||
{ |
||||
/* 2.6.18 has mtd->ecclayout->oobavail */ |
||||
/* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ |
||||
int oobavail = mtd->ecclayout->oobavail; |
||||
|
||||
if (oobavail < YTAG1_SIZE) { |
||||
yaffs_trace(YAFFS_TRACE_ERROR, |
||||
"mtd device has only %d bytes for tags, need %d\n", |
||||
oobavail, YTAG1_SIZE); |
||||
return YAFFS_FAIL; |
||||
} |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
/* Query for the current state of a specific block.
|
||||
* |
||||
* Examine the tags of the first chunk of the block and return the state: |
||||
* - YAFFS_BLOCK_STATE_DEAD, the block is marked bad |
||||
* - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use |
||||
* - YAFFS_BLOCK_STATE_EMPTY, the block is clean |
||||
* |
||||
* Always returns YAFFS_OK. |
||||
*/ |
||||
int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, |
||||
yaffs_BlockState * pState, int *pSequenceNumber) |
||||
{ |
||||
struct mtd_info * mtd = dev->genericDevice; |
||||
int chunkNo = blockNo * dev->nChunksPerBlock; |
||||
loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk; |
||||
yaffs_ExtendedTags etags; |
||||
int state = YAFFS_BLOCK_STATE_DEAD; |
||||
int seqnum = 0; |
||||
int retval; |
||||
|
||||
/* We don't yet have a good place to test for MTD config prerequists.
|
||||
* Do it here as we are called during the initial scan. |
||||
*/ |
||||
if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) { |
||||
return YAFFS_FAIL; |
||||
} |
||||
|
||||
retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); |
||||
etags.blockBad = (mtd->block_isbad)(mtd, addr); |
||||
if (etags.blockBad) { |
||||
yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, |
||||
"block %d is marked bad\n", blockNo); |
||||
state = YAFFS_BLOCK_STATE_DEAD; |
||||
} |
||||
else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) { |
||||
/* bad tags, need to look more closely */ |
||||
state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; |
||||
} |
||||
else if (etags.chunkUsed) { |
||||
state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; |
||||
seqnum = etags.sequenceNumber; |
||||
} |
||||
else { |
||||
state = YAFFS_BLOCK_STATE_EMPTY; |
||||
} |
||||
|
||||
*pState = state; |
||||
*pSequenceNumber = seqnum; |
||||
|
||||
/* query always succeeds */ |
||||
return YAFFS_OK; |
||||
} |
||||
|
||||
#endif /*KERNEL_VERSION*/ |
||||
@ -1,28 +0,0 @@ |
||||
/*
|
||||
* 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 |
||||
* |
||||
* 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_MTDIF1_H__ |
||||
#define __YAFFS_MTDIF1_H__ |
||||
|
||||
int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, |
||||
const __u8 * data, const yaffs_ExtendedTags * tags); |
||||
|
||||
int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, |
||||
__u8 * data, yaffs_ExtendedTags * tags); |
||||
|
||||
int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); |
||||
|
||||
int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, |
||||
yaffs_BlockState * state, int *sequenceNumber); |
||||
|
||||
#endif |
||||
Loading…
Reference in new issue