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* fs/fat/fat_write: Fix management of empty filesBenoît Thébaudeau2015-10-11-21/+64
| | | | | | | | | | | | 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>
* fs/fat/fat_write: Factor out duplicate codeBenoît Thébaudeau2015-10-11-48/+20
| | | | Signed-off-by: Benoît Thébaudeau <benoit@wsystem.com>
* fs/fat/fat_write: Fix curclust/newclust mix-upBenoît Thébaudeau2015-10-11-3/+3
| | | | | | | 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>
* fs/fat/fat_write: Merge calls to set_cluster()Benoît Thébaudeau2015-10-11-12/+1
| | | | | | | | 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>
* fs/fat/fat_write: Fix buffer alignmentsBenoît Thébaudeau2015-10-11-14/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* FIX: fat: Provide correct return code from disk_{read|write} to upper layersŁukasz Majewski2015-09-11-4/+18
| | | | | | | | | | | | | | | | | | | | | | 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
* Move ALLOC_CACHE_ALIGN_BUFFER() to the new memalign.h headerSimon Glass2015-09-11-0/+1
| | | | | | | 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>
* fat: handle paths that include ../Stephen Warren2015-09-11-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* fs: fat: read: fix fat16 ls/read issuePrzemyslaw Marczak2015-01-05-18/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* fs/ext4/ext4fs.c, fs/fs.c fs/fat/fat_write.c: Adjust 64bit math methodsTom Rini2014-12-01-4/+6
| | | | | | | | | | | | 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>
* fs: API changes enabling extra parameter to return size of type loff_tSuriyan Ramasami2014-11-23-16/+7
| | | | | | | | | | | | | | | 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>
* fat: Prepare API change for files greater than 2GBSuriyan Ramasami2014-11-23-86/+113
| | | | | | | | | 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>
* linux/kernel.h: sync min, max, min3, max3 macros with LinuxMasahiro Yamada2014-11-23-1/+1
| | | | | | | | | | | | | | | | | | | | 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>
* kconfig: add blank Kconfig filesMasahiro Yamada2014-09-24-0/+0
| | | | | | | | 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>
* fs: implement size/fatsize/ext4sizeStephen Warren2014-08-09-0/+5
| | | | | | | | | | 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>
* disk: part_efi: clarify lbaint_t usageSteve Rae2014-06-05-1/+1
| | | | | | | | | | - 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>
* fs/fat: correct FAT16/12 file finding in root dirWu, Josh2014-05-12-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* fs: fat_write: fix the incorrect last cluster checkingWu, Josh2014-05-12-1/+1
| | | | | | | | | | | | | | | | | | | | 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>
* fs: fat: Fix cache align error message in fatwriteNobuhiro Iwamatsu2014-05-12-1/+1
| | | | | | | | | | 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>
* fat: implement exists() for FAT fsStephen Warren2014-02-19-4/+14
| | | | | | | | 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>
* fs:fat: fix set file name functionPiotr Wilczek2013-11-08-1/+1
| | | | | | | | | | 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>
* fs: convert makefiles to Kbuild styleMasahiro Yamada2013-10-31-28/+3
| | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* fs: fat: don't call disk_write with zero sector numWu, Josh2013-09-06-3/+5
| | | | | | | | | | | | | | 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>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-68/+4
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* fs/fat: Don't multiply fatsize with sector sizeEgbert Eich2013-05-01-1/+0
| | | | | | | | | 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>
* fs: Move ls and read methods into ext4, fatSimon Glass2013-03-04-0/+17
| | | | | | | | | 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>
* FAT: remove ifdefs to make the code more readableRichard Genoud2013-02-04-34/+32
| | | | | | | | | | | | 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>
* FAT: use toupper/tolower instead of recoding themRichard Genoud2013-02-04-2/+4
| | | | | | | | 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>
* vfat: Fix mkcksum argument sizesMarek Vasut2013-01-31-2/+2
| | | | | | | | | | | | | | | | 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>
* fs: separate CONFIG_FS_{FAT, EXT4} from CONFIG_CMD_{FAT, EXT*}Stephen Warren2012-10-29-2/+2
| | | | | | | | | | | | | | | | | | 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>
* FAT: implement fat_set_blk_dev(), convert cmd_fat.cStephen Warren2012-10-25-35/+31
| | | | | | | | | | | | | 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>
* FAT: initialize all fields in cur_part_info, simplify initStephen Warren2012-10-25-2/+6
| | | | | | | | | | | | | | 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>
* FAT: remove cur_part_nrStephen Warren2012-10-25-7/+2
| | | | | | | | | | | | | | | 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>
* fs: fat: Fix mkcksum() function parametersMarek Vasut2012-10-17-9/+13
| | | | | | | | | | | | | | | | | | | | The mkcksum() function now takes one parameter, the pointer to 11-byte wide character array, which it then operates on. Currently, the function is wrongly passed (dir_entry)->name, which is only 8-byte wide character array. Though by further inspecting the dir_entry structure, it can be noticed that the name[8] entry is immediatelly followed by ext[3] entry. Thus, name[8] and ext[3] in the dir_entry structure actually work as this 11-byte wide array since they're placed right next to each other by current compiler behavior. Depending on this is obviously wrong, thus fix this by correctly passing both (dir_entry)->name and (dir_entry)->ext to the mkcksum() function and adjust the function appropriately. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Tom Rini <trini@ti.com>
* ARM: prevent misaligned array initsAlbert ARIBAUD2012-10-15-0/+2
| | | | | | | | | | | | | | Under option -munaligned-access, gcc can perform local char or 16-bit array initializations using misaligned native accesses which will throw a data abort exception. Fix files where these array initializations were unneeded, and for files known to contain such initializations, enforce gcc option -mno-unaligned-access. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> [trini: Switch to usign call cc-option for -mno-unaligned-access as Albert had done previously as that's really correct] Signed-off-by: Tom Rini <trini@ti.com>
* FAT: check for partition 0 not 1 for whole-disk fsStephen Warren2012-10-08-1/+1
| | | | | | | | | | | | | | | | | | | | | The recent switch to use get_device_and_partition() from do_fat_ls() broke the ability to access a FAT filesystem directly on a whole device; FAT only works within a partition on a device. This change makes e.g. "fatls mmc 0:0" work; explicitly requesting partition ID 0 is something that get_device_and_partition() fully supports. However, fat_register_device() expects partition ID 1 to be used in the full-disk case; partition ID 1 was previously implicitly specified when the user didn't actually specify a partition ID. Update fat_register_device() to expect the correct ID. This change does imply that if a user explicitly executes "fatls mmc 0:1" then this will fail, and may be a change in behaviour. Note that this still prevents "fatls mmc 0:auto" from working. The next patch will fix that. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* FAT: Make it possible to read from any file positionBenoît Thébaudeau2012-09-26-28/+88
| | | | | | | | | | | | | | | When storage devices contain files larger than the embedded RAM, it is useful to be able to read these files by chunks, e.g. for a software update to the embedded NAND Flash from an external storage device (USB stick, SD card, etc.). Hence, this patch makes it possible by adding a new FAT API to read files from a given position. This patch also adds this feature to the fatload command. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de> Signed-off-by: Tom Rini <trini@ti.com>
* FAT: Fix file contents listed as directoryBenoît Thébaudeau2012-09-18-4/+4
| | | | | | | | | | | | | With: fatls mmc 0 /dir/file dir: regular directory file: regular file The previous code read the contents of file as if it were directory entries to list. This patch refuses to list file contents as if it were a folder. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de>
* FAT: Simplify get_contentsBenoît Thébaudeau2012-09-02-13/+1
| | | | | | | | One call to get_cluster can be factorized with another, so avoid duplicating code. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de>
* FAT: get_cluster: Add buffer bouncingBenoît Thébaudeau2012-09-02-12/+30
| | | | | | | | | | Add a buffer bouncing mechanism to get_cluster. This can be useful for misaligned applicative buffers passed through get_contents. This is required for the following patches in the case of data aligned differently relatively to buffers and clusters. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de>
* FAT: Fix redundant sector readBenoît Thébaudeau2012-09-02-26/+33
| | | | | | | | | With the previous code, the remaining prefetched sectors were read again after each sector. With this patch, each sector is read only once, thus making the prefetch useful. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de>
* FAT: cosmetic: Remove useless assignmentBenoît Thébaudeau2012-09-02-1/+0
| | | | | | | | fatlength is not used after this assignment, so it is useless and can be removed. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de>
* FAT: get_fatent: Fix FAT boundary checkBenoît Thébaudeau2012-09-02-2/+2
| | | | | | | | startblock must be taken into account in order not to read past the end of the FAT. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de>
* FAT: cosmetic: Remove extra spacesBenoît Thébaudeau2012-09-02-23/+21
| | | | | | | Remove spaces before opening parentheses in function calls. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Wolfgang Denk <wd@denx.de>
* Block: Remove MG DISK supportMarek Vasut2012-06-21-2/+0
| | | | | | | | This driver is unused and obsolete. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: unsik Kim <donari75@gmail.com>
* fs/fat: align disk buffers on cache line to enable DMA and cacheEric Nelson2012-04-30-10/+12
| | | | | Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com> Acked-by: Mike Frysinger <vapier@gentoo.org>
* fs/fat/fat_write.c: Fix GCC 4.6 warningsAnatolij Gustschin2012-03-26-9/+1
| | | | | | | | | | | | | | | | | Fix: fat_write.c: In function 'find_directory_entry': fat_write.c:826:8: warning: variable 'prevcksum' set but not used [-Wunused-but-set-variable] fat_write.c: In function 'do_fat_write': fat_write.c:933:6: warning: variable 'root_cluster' set but not used [-Wunused-but-set-variable] fat_write.c:925:12: warning: variable 'slotptr' set but not used [-Wunused-but-set-variable] Signed-off-by: Anatolij Gustschin <agust@denx.de> Cc: Donggeun Kim <dg77.kim@samsung.com> Acked-by: Maximilian Schwerin <mvs@tigris.de> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
* FAT write: Fix compile errorsDonggeun Kim2012-03-24-12/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes compile errors introduced by commit 9813b750f32c0056f0a35813b9a9ec0f68b664af 'fs/fat: Fix FAT detection to support non-DOS partition tables' fat_write.c: In function 'disk_write': fat_write.c:54: error: 'part_offset' undeclared (first use in this function) fat_write.c:54: error: (Each undeclared identifier is reported only once fat_write.c:54: error: for each function it appears in.) fat_write.c: In function 'do_fat_write': fat_write.c:950: error: 'part_size' undeclared (first use in this function) These errors only appear when this code is enabled by defining CONFIG_FAT_WRITE option. This patch was originally part of http://article.gmane.org/gmane.comp.boot-loaders.u-boot/121847 Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Maximilian Schwerin <mvs@tigris.de> Fixed patch author and added all needed SoB from the original patch and also submitter's SoB. Extended commit log. Signed-off-by: Anatolij Gustschin <agust@denx.de>
* FAT: update the second FAT when writing a fileDonggeun Kim2012-01-05-0/+11
| | | | | | | | | | | | After susccessful write to the FAT partition, fsck program may print warning message due to different FAT, provided that the filesystem supports two FATs. This patch makes the second FAT to be same with the first one when writing a file. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* fs/fat: Improve error handlingKyle Moffett2012-01-05-4/+14
| | | | | | | | | | | | | | | | | | | | The FAT filesystem fails silently in inexplicable ways when given a filesystem with a block-size that does not match the device sector size. In theory this is not an unsupportable combination but requires a major rewrite of a lot of the filesystem. Until that occurs, the filesystem should detect that scenario and display a helpful error message. This scenario in particular occurred on a 512-byte blocksize FAT fs stored in an El-Torito boot volume on a CD-ROM (2048-byte sector size). Additionally, in many circumstances the ->block_read method will not return a negative number to indicate an error but instead return 0 to indicate the number of blocks successfully read (IE: None). The FAT filesystem should defensively check to ensure that it got all of the sectors that it asked for when reading. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
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