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2017-01-28fs/fat: Fix unaligned __u16 reads for FAT12 accessStefan Brüns
Doing unaligned reads is not supported on all architectures, use byte sized reads of the little endian buffer. Rename off16 to off8, as it reflects the buffer offset in byte granularity (offset is in entry, i.e. 12 bit, granularity). Fix a regression introduced in 8d48c92b45aea91e2a2be90f2ed93677e85526f1 Reported-by: Oleksandr Tymoshenko <gonzo@bluezbox.com> Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Tested-by: Oleksandr Tymoshenko <gonzo@bluezbox.com>
2017-01-28cmd, disk: convert CONFIG_PARTITION_UUIDS, CMD_PART and CMD_GPTPatrick Delaunay
We convert CONFIG_PARTITION_UUIDS to Kconfig first. But in order to cleanly update all of the config files we must also update CMD_PART and CMD_GPT to also be in Kconfig in order to avoid complex logic elsewhere to update all of the config files. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com> Signed-off-by: Tom Rini <trini@konsulko.com>
2016-12-27fs/fat: simplify get_fatent for FAT12Stefan Brüns
Instead of shuffling bits from two adjacent 16 bit words, use one 16 bit word with the appropriate byte offset in the buffer. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
2016-12-27fs/fat: merge readwrite get_fatent_value() with readonly get_fatent()Stefan Brüns
get_fatent_value(...) flushes changed FAT entries to disk when fetching the next FAT blocks, in every other aspect it is identical to get_fatent(...). Provide a stub implementation for flush_dirty_fat_buffer if CONFIG_FAT_WRITE is not set. Calling flush_dirty_fat_buffer during read only operation is fine as it checks if any buffers needs flushing. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2016-12-27fs/fat: Avoid corruption of sectors following the FATStefan Brüns
The FAT is read/flushed in segments of 6 (FATBUFBLOCKS) disk sectors. The last segment may be less than 6 sectors, cap the length. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2016-12-27fat: fatwrite: fix the command for FAT12Philipp Skadorov
The u-boot command fatwrite empties FAT clusters from the beginning till the end of the file. Specifically for FAT12 it fails to detect the end of the file and goes beyond the file bounds thus corrupting the file system. Additionally, FAT entry chaining-up into a file is not implemented for FAT12. The users normally workaround this by re-formatting the partition as FAT16/FAT32, like here: https://github.com/FEDEVEL/openrex-uboot-v2015.10/issues/1 The patch fixes the bounds of a file and FAT12 entries chaining into a file, including EOF markup. Signed-off-by: Philipp Skadorov <philipp.skadorov@savoirfairelinux.com>
2016-11-29fs/fat/fatwrite: Local variable as buffer to store dir_slot entriesTien Fong Chee
fill_dir_slot use get_contents_vfatname_block as a temporary buffer for constructing a list of dir_slot entries. To save the memory and providing correct type of memory for above usage, a local buffer with accurate size declaration is introduced. The local array size 640 is used because for long file name entry, each entry use 32 bytes, one entry can store up to 13 characters. The maximum number of entry possible is 20. So, total size is 32*20=640bytes. Signed-off-by: Genevieve Chan <ccheauya@altera.com> Signed-off-by: Tien Fong Chee <tfchee@altera.com>
2016-09-23fs/fat: Correct description of determine_fatent functionStefan Brüns
Current description does not match the function behaviour. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Lukasz Majewski <l.majewski@samsung.com>
2016-09-23fs/fat: Do not write unmodified fat entries to diskStefan Brüns
The code caches 6 sectors of the FAT. On FAT traversal, the old contents needs to be flushed to disk, but only if any FAT entries had been modified. Explicitly flag the buffer on modification. Currently, creating a new file traverses the whole FAT up to the first free cluster and rewrites the on-disk blocks. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
2016-09-23fs/fat: Remove two statements without effectStefan Brüns
fatlength is a local variable which is no more used after the assignment. s_name is not used in the function, save the strncpy. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Lukasz Majewski <l.majewski@samsung.com> Acked-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2016-05-17dm: scsi: Rename CONFIG_CMD_SCSI to CONFIG_SCSISimon Glass
This option currently enables both the command and the SCSI functionality. Rename the existing option to CONFIG_SCSI since most of the code relates to the feature. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-03-22Fix spelling of "supported/unsupported".Vagrant Cascadian
Signed-off-by: Vagrant Cascadian <vagrant@debian.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
2016-03-14dm: block: Adjust device calls to go through helpers functionSimon Glass
To ease conversion to driver model, add helper functions which deal with calling each block device method. With driver model we can reimplement these functions with the same arguments. Use inline functions to avoid increasing code size on some boards. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2016-03-14dm: block: Rename device number member dev to devnumSimon Glass
This is a device number, and we want to use 'dev' to mean a driver model device. Rename the member. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2016-03-14dm: part: Rename some partition functionsSimon Glass
Rename three partition functions so that they start with part_. This makes it clear what they relate to. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Stephen Warren <swarren@nvidia.com>
2016-03-14dm: Drop the block_dev_desc_t typedefSimon Glass
Use 'struct' instead of a typdef. Also since 'struct block_dev_desc' is long and causes 80-column violations, rename it to struct blk_desc. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2016-01-14block: pass block dev not num to read/write/erase()Stephen Warren
This will allow the implementation to make use of data in the block_dev structure beyond the base device number. This will be useful so that eMMC block devices can encompass the HW partition ID rather than treating this out-of-band. Equally, the existence of the priv field is crying out for this patch to exist. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2015-10-11fs/fat/fat_write: Fix management of empty filesBenoît Thébaudeau
Overwriting an empty file not created by U-Boot did not work, and it could even corrupt the FAT. Moreover, creating empty files or emptying existing files allocated a cluster, which is not standard. Fix this by always keeping empty files clusterless as specified by Microsoft (the start cluster must be set to 0 in the directory entry in that case), and by supporting overwriting such files. Signed-off-by: Benoît Thébaudeau <benoit@wsystem.com>
2015-10-11fs/fat/fat_write: Factor out duplicate codeBenoît Thébaudeau
Signed-off-by: Benoît Thébaudeau <benoit@wsystem.com>
2015-10-11fs/fat/fat_write: Fix curclust/newclust mix-upBenoît Thébaudeau
curclust was used instead of newclust in the debug() calls and in one CHECK_CLUST() call, which could skip a failure case. Signed-off-by: Benoît Thébaudeau <benoit@wsystem.com>
2015-10-11fs/fat/fat_write: Merge calls to set_cluster()Benoît Thébaudeau
set_contents() had uselessly split calls to set_cluster(). Merge these calls, which removes some cases of set_cluster() being called with a size of zero. Signed-off-by: Benoît Thébaudeau <benoit@wsystem.com>
2015-10-11fs/fat/fat_write: Fix buffer alignmentsBenoît Thébaudeau
set_cluster() was using a temporary buffer without enforcing its alignment for DMA and cache. Moreover, it did not check the alignment of the passed buffer, which can come directly from applicative code or from the user. This could cause random data corruption, which has been observed on i.MX25 writing to an SD card. Fix this by only passing ARCH_DMA_MINALIGN-aligned buffers to disk_write(), which requires the introduction of a buffer bouncing mechanism for the misaligned buffers passed to set_cluster(). By the way, improve the handling of the corresponding return values from disk_write(): - print them with debug() in case of error, - consider that there is an error is disk_write() returns a smaller block count than the requested one, not only if its return value is negative. After this change, set_cluster() and get_cluster() are almost symmetrical. Signed-off-by: Benoît Thébaudeau <benoit@wsystem.com>
2015-09-11FIX: fat: Provide correct return code from disk_{read|write} to upper layersŁukasz Majewski
It is very common that FAT code is using following pattern: if (disk_{read|write}() < 0) return -1; Up till now the above code was dead, since disk_{read|write) could only return value >= 0. As a result some errors from medium layer (i.e. eMMC/SD) were not caught. The above behavior was caused by block_{read|write|erase} declared at struct block_dev_desc (@part.h). It returns unsigned long, where 0 indicates error and > 0 indicates that medium operation was correct. This patch as error regards 0 returned from block_{read|write|erase} when nr_blocks is grater than zero. Read/Write operation with nr_blocks=0 should return 0 and hence is not considered as an error. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Test HW: Odroid XU3 - Exynos 5433
2015-09-11Move ALLOC_CACHE_ALIGN_BUFFER() to the new memalign.h headerSimon Glass
Now that we have a new header file for cache-aligned allocation, we should move the stack-based allocation macro there also. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-09-11fat: handle paths that include ../Stephen Warren
The FAT code contains a special case to parse the root directory. This is needed since the root directory location/layout on disk is special cased for FAT12/16. In particular, the location and size of the FAT12/16 root directory is hard-coded and contiguous, whereas all FAT12/16 non-root directories, and all FAT32 directories, are stored in a non-contiguous fashion, with the layout represented by a linked-list of clusters in the FAT. If a file path contains ../ (for example /extlinux/../bcm2835-rpi-cm.dtb), it is possible to need to parse the root directory for the first element in the path (requiring application of the special case), then a sub- directory (in the general way), then re-parse the root directory (again requiring the special case). However, the current code in U-Boot only applies the special case for the very first path element, and never for any later path element. When reparsing the root directory without applying the special case, any file in a sector (or cluster?) other than the first sector/cluster of the root directory will not be found. This change modifies the non-root-dir-parsing loop of do_fat_read_at() to detect if it's walked back to the root directory, and if so, jumps back to the special case code that handles parsing of the root directory. This change was tested using sandbox by executing: ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0" ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /" ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux" ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux/" ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux/.." ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux/../" ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux/../backup" ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux/../backup/" ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux/../backup/.." ./u-boot -c "host bind 0 ../sd-p1.bin; ls host 0:0 /extlinux/../backup/../" ./u-boot -c "host bind 0 ../sd-p1.bin; load host 0:0 0 /bcm2835-rpi-cm.dtb" ./u-boot -c "host bind 0 ../sd-p1.bin; load host 0:0 0 /extlinux/../bcm2835-rpi-cm.dtb" ./u-boot -c "host bind 0 ../sd-p1.bin; load host 0:0 0 /backup/../bcm2835-rpi-cm.dtb" ./u-boot -c "host bind 0 ../sd-p1.bin; load host 0:0 0 /extlinux/..backup/../bcm2835-rpi-cm.dtb" ./u-boot -c "host bind 0 ../sd-p1.bin; load host 0:0 0 /extlinux/../backup/../bcm2835-rpi-cm.dtb" (/extlinux and /backup are in different sectors so trigger some different cases, and bcm2835-rpi-cm.dtb is in a sector of the root directory other than the first). In all honesty, this change is a bit of a hack, using goto and all. However, as demonstrated above it appears to work well in practice, is quite minimal, likely doesn't introduce any risk of regressions, and hopefully doesn't introduce any maintenance issues. The correct fix would be to collapse the root and non-root loops in do_fat_read_at() and get_dentfromdir() into a single loop that has a small special-case when moving from one sector to the next, to handle the layout difference of root/non-root directories. AFAIK all other aspects of directory parsing are identical. However, that's a much larger change which needs significantly more thought before it's implemented. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-01-05fs: fat: read: fix fat16 ls/read issuePrzemyslaw Marczak
The present fat implementation ignores FAT16 long name directory entries which aren't placed in a single sector. This was becouse of the buffer was always filled by the two sectors, and the loop was made also for two sectors. If some file long name entries are stored in two sectors, the we have two cases: Case 1: Both of sectors are in the buffer - all required data for long file name is in the buffer. - Read OK! Case 2: The current directory entry is placed at the end of the second buffered sector. And the next entries are placed in a sector which is not buffered yet. Then two next sectors are buffered and the mentioned entry is ignored. - Read fail! This commit fixes this issue by: - read two sectors after loop on each single is done - keep the last used sector as a first in the buffer before the read of two next The commit doesn't affects the fat32 imlementation, which works good as previous. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Mikhail Zolotaryov <lebon@lebon.org.ua> Cc: Tom Rini <trini@ti.com> Cc: Stephen Warren <swarren@nvidia.com> Cc: Simon Glass <sjg@chromium.org> Cc: Suriyan Ramasami <suriyan.r@gmail.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: Wolfgang Denk <wd@denx.de> Tested-by: Simon Glass <sjg@chomium.org>
2014-12-01fs/ext4/ext4fs.c, fs/fs.c fs/fat/fat_write.c: Adjust 64bit math methodsTom Rini
The changes to introduce loff_t into filesize means that we need to do 64bit math on 32bit platforms. Make sure we use the right wrappers for these operations. Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Suriyan Ramasami <suriyan.r@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@ti.com> Tested-by: Pierre Aubert <p.aubert@staubli.com>
2014-11-23fs: API changes enabling extra parameter to return size of type loff_tSuriyan Ramasami
The sandbox/ext4/fat/generic fs commands do not gracefully deal with files greater than 2GB. Negative values are returned in such cases. To handle this, the fs functions have been modified to take an additional parameter of type "* loff_t" which is then populated. The return value of the fs functions are used only for error conditions. Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> [trini: Update board/gdsys/p1022/controlcenterd-id.c, drivers/fpga/zynqpl.c for changes] Signed-off-by: Tom Rini <trini@ti.com>
2014-11-23fat: Prepare API change for files greater than 2GBSuriyan Ramasami
Change the internal FAT functions to use loff_t for offsets. Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> [trini: Fix fs/fat/fat.c for min3 updates] Signed-off-by: Tom Rini <trini@ti.com>
2014-11-23linux/kernel.h: sync min, max, min3, max3 macros with LinuxMasahiro Yamada
U-Boot has never cared about the type when we get max/min of two values, but Linux Kernel does. This commit gets min, max, min3, max3 macros synced with the kernel introducing type checks. Many of references of those macros must be fixed to suppress warnings. We have two options: - Use min, max, min3, max3 only when the arguments have the same type (or add casts to the arguments) - Use min_t/max_t instead with the appropriate type for the first argument Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Pavel Machek <pavel@denx.de> Acked-by: Lukasz Majewski <l.majewski@samsung.com> Tested-by: Lukasz Majewski <l.majewski@samsung.com> [trini: Fixup arch/blackfin/lib/string.c] Signed-off-by: Tom Rini <trini@ti.com>
2014-09-24kconfig: add blank Kconfig filesMasahiro Yamada
This would be useful to start moving various config options. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
2014-08-09fs: implement size/fatsize/ext4sizeStephen Warren
These commands may be used to determine the size of a file without actually reading the whole file content into memory. This may be used to determine if the file will fit into the memory buffer that will contain it. In particular, the DFU code will use it for this purpose in the next commit. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2014-06-05disk: part_efi: clarify lbaint_t usageSteve Rae
- update the comments regarding lbaint_t usage - cleanup casting of values related to the lbaint_t type - cleanup of a type that requires a u64 Tested on little endian ARMv7 and ARMv8 configurations Signed-off-by: Steve Rae <srae@broadcom.com>
2014-05-12fs/fat: correct FAT16/12 file finding in root dirWu, Josh
When write a file into FAT file system, it will search a match file in root dir. So the find_directory_entry() will get the first cluster of root dir content and search the directory item one by one. If the file is not found, we will call get_fatent_value() to get next cluster of root dir via lookup the FAT table and continue the search. The issue is in FAT16/12 system, we cannot get root dir's next clust from FAT table. The FAT table only be use to find the clust of data aera in FAT16/12. In FAT16/12 if the clust is in root dir, the clust number is a negative number or 0, 1. Since root dir is located in front of the data area. Data area start clust #2. So the root dir clust number should < 2. This patch will check above situation before call get_fatenv_value(). If curclust is < 2, include minus number, we just increase one on the curclust since root dir is in continous cluster. The patch also add a sanity check for entry in get_fatenv_value(). Signed-off-by: Josh Wu <josh.wu@atmel.com>
2014-05-12fs: fat_write: fix the incorrect last cluster checkingWu, Josh
In fat_write.c, the last clust condition check is incorrect: if ((curclust >= 0xffffff8) || (curclust >= 0xfff8)) { ... ... } For example, in FAT32 if curclust is 0x11000. It is a valid clust. But on above condition check, it will be think as a last clust. So the correct last clust check should be: in fat32, curclust >= 0xffffff8 in fat16, curclust >= 0xfff8 in fat12, curclust >= 0xff8 This patch correct the last clust check. Signed-off-by: Josh Wu <josh.wu@atmel.com>
2014-05-12fs: fat: Fix cache align error message in fatwriteNobuhiro Iwamatsu
Use of malloc of do_fat_write() causes cache error on ARM v7 platforms. Perhaps, the same problem will occur at any other CPUs. This replaces malloc with memalign to fix cache buffer alignment. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Yoshiyuki Ito <yoshiyuki.ito.ub@renesas.com> Tested-by: Hector Palacios <hector.palacios@digi.com>
2014-02-19fat: implement exists() for FAT fsStephen Warren
This hooks into the generic "file exists" support added in an earlier patch, and provides an implementation for the FAT filesystem. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2013-11-08fs:fat: fix set file name functionPiotr Wilczek
Curently memcpy copies string without null terminating char because function strlen returns only number of characters excluding null terminating character. Replace memcpy with strcpy. Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> CC: Tom Rini <trini@ti.com>
2013-10-31fs: convert makefiles to Kbuild styleMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-09-06fs: fat: don't call disk_write with zero sector numWu, Josh
In the set_cluster() function, it will convert the buffer size to sector numbers. Then call disk_write() to write by sector. For remaining buffer, the size is less than a sector, call disk_write() again to write them in one sector. But if the total buffer size is less then one sector, the original code will call disk_write() with zero sector number. It is unnecessary. So this patch fix this. Now it will not call disk_write() if total buffer size is less than one sector. Signed-off-by: Josh Wu <josh.wu@atmel.com>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-05-01fs/fat: Don't multiply fatsize with sector sizeEgbert Eich
Bugfix: Here at this place we need the fat size in sectors not bytes. This was found during code review when adding support for storage devices with blocksizes != 512. Signed-off-by: Egbert Eich <eich@suse.com>
2013-03-04fs: Move ls and read methods into ext4, fatSimon Glass
It doesn't make a lot of sense to have these methods in fs.c. They are filesystem-specific, not generic code. Add each to the relevant filesystem and remove the associated #ifdefs in fs.c. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
2013-02-04FAT: remove ifdefs to make the code more readableRichard Genoud
ifdefs in the code are making it harder to read. The use of simple if(vfat_enabled) makes no more code and is cleaner. (the code is discarded by the compiler instead of the preprocessor.) NB: if -O0 is used, the code won't be discarded and bonus, now the code compiles even if CONFIG_SUPPORT_VFAT is not defined. Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
2013-02-04FAT: use toupper/tolower instead of recoding themRichard Genoud
toupper/tolower function are already declared, so use them. Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Stefano Babic <sbabic@denx.de>
2013-01-31vfat: Fix mkcksum argument sizesMarek Vasut
In case a function argument is known/fixed size array in C, the argument is still decoyed as pointer instead ( T f(U n[k]) ~= T fn(U *n) ) and therefore calling sizeof on the function argument will result in the size of the pointer, not the size of the array. The VFAT code contains such a bug, this patch fixes it. Reported-by: Aaron Williams <Aaron.Williams@cavium.com> Signed-off-by: Marek Vasut <marex@denx.de> Cc: Tom Rini <tom.rini@gmail.com> Cc: Aaron Williams <Aaron.Williams@cavium.com> Tested-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2012-10-29fs: separate CONFIG_FS_{FAT, EXT4} from CONFIG_CMD_{FAT, EXT*}Stephen Warren
This makes the FAT and ext4 filesystem implementations build if CONFIG_FS_{FAT,EXT4} are defined, rather than basing the build on whether CONFIG_CMD_{FAT,EXT*} are defined. This will allow the filesystems to be built separately from the filesystem-specific commands that use them. This paves the way for the creation of filesystem-generic commands that used the filesystems, without requiring the filesystem- specific commands. Minor documentation changes are made for this change. The new config options are automatically selected by the old config options to retain backwards-compatibility. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2012-10-25FAT: implement fat_set_blk_dev(), convert cmd_fat.cStephen Warren
This makes the FAT filesystem API more consistent with other block-based filesystems. If in the future standard multi-filesystem commands such as "ls" or "load" are implemented, having FAT work the same way as other filesystems will be necessary. Convert cmd_fat.c to the new API, so the code looks more like other files implementing the same commands for other filesystems. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2012-10-25FAT: initialize all fields in cur_part_info, simplify initStephen Warren
cur_part_info.{name,type} are strings. So, we don't need to memset() the entire thing, just put the NULL-termination in the first byte. Add missing initialization of the bootable and uuid fields. None of these fields are actually used by fat.c. However, since it stores the entire disk_partition_t, we should make sure that all fields are valid. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2012-10-25FAT: remove cur_part_nrStephen Warren
A future patch will implement the more standard filesystem API fat_set_blk_dev(). This API has no way to know which partition number the partition represents. Equally, future DM rework will make the concept of partition number harder to pass around. So, simply remove cur_part_nr from fat.c; its only use is in a diagnostic printf, and the context where it's printed should make it obvious which partition is referred to anyway (since the partition ID would come from the user command-line that caused it). Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>