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* 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>
* fs/fat: Fix FAT detection to support non-DOS partition tablesKyle Moffett2012-01-05-63/+52
| | | | | | | | | | | | | | | | | | | The FAT filesystem code currently ends up requiring that the partition table be a DOS MBR, as it checks for the DOS 0x55 0xAA signature on the partition table (which may be Mac, EFI, ISO9660, etc) before actually computing the partition offset. This fixes support for accessing a FAT filesystem in an ISO9660 boot volume (El-Torito format) by reordering the filesystem checks and reading the 0x55 0xAA "DOS boot signature" and FAT/FAT32 magic number from the first sector of the partition instead of from sector 0. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Fix build warning: fat.c: In function 'fat_register_device': fat.c:66:15: warning: variable 'found_partition' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de>
* fat: reset VFAT short alias checksum on first matchSergei Shtylyov2012-01-05-0/+2
| | | | | | | | | | The VFAT short alias checksum read from a long file name is only overwritten when another long file name appears in a directory list. Until then it renders short file names invisible that have the same checksum. Reset the checksum on first match. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Martin Mueller <martin.mueller5@de.bosch.com>
* Merge branch 'next' of ../nextWolfgang Denk2011-12-23-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'next' of ../next: mkenvimage: Add version info switch (-V) mkenvimage: Fix getopt() error handling mkenvimage: Fix some typos phy: add Micrel KS8721BL phy definition net: introduce per device index mvgbe: remove setting of ethaddr within the driver x86: Add support for specifying an initrd with the zboot command x86: Refactor the zboot innards so they can be reused with a vboot image x86: Add infrastructure to extract an e820 table from the coreboot tables x86: Add support for booting Linux using the 32 bit boot protocol x86: Clean up the x86 zimage code in preparation to extend it x86: Import code from coreboot's libpayload to parse the coreboot table x86: Initial commit for running as a coreboot payload CHECKPATCH: ./board/esd/hh405/logo_320_240_8bpp.c CHECKPATCH: ./board/esd/hh405/logo_1024_768_8bpp.c CHECKPATCH: ./board/esd/hh405/logo_320_240_4bpp.c CHECKPATCH: ./board/esd/hh405/logo_640_480_24bpp.c CHECKPATCH: ./board/esd/apc405/logo_640_480_24bpp.c CHECKPATCH: ./board/esd/voh405/logo_320_240_4bpp.c CHECKPATCH: ./board/esd/voh405/logo_640_480_24bpp.c CHECKPATCH: ./board/esd/hh405/fpgadata.c CHECKPATCH: ./board/esd/pci405/fpgadata.c CHECKPATCH: ./board/esd/tasreg/fpgadata.c CHECKPATCH: ./board/esd/apc405/fpgadata.c CHECKPATCH: ./board/esd/voh405/fpgadata.c CHECKPATCH: ./board/esd/ash405/fpgadata.c CHECKPATCH: ./board/esd/dasa_sim/fpgadata.c CHECKPATCH: ./board/esd/ar405/fpgadata_xl30.c CHECKPATCH: ./board/esd/ar405/fpgadata.c CHECKPATCH: ./board/esd/plu405/fpgadata.c CHECKPATCH: ./board/esd/wuh405/fpgadata.c CHECKPATCH: ./board/esd/cpci405/fpgadata_cpci405.c CHECKPATCH: ./board/esd/cpci405/fpgadata_cpci405ab.c CHECKPATCH: ./board/esd/cpci405/fpgadata_cpci4052.c CHECKPATCH: ./board/esd/canbt/fpgadata.c CHECKPATCH: ./board/esd/du405/fpgadata.c CHECKPATCH: ./board/esd/cpciiser4/fpgadata.c CHECKPATCH: ./board/dave/PPChameleonEVB/fpgadata.c avr32:mmu.c: fix printf() length modifier fat.c: fix printf() length modifier cmd_sf.c: fix printf() length modifier Make printf and vprintf safe from buffer overruns vsprintf: Move function documentation into header file Add safe vsnprintf and snprintf library functions Move vsprintf functions into their own header Conflicts: tools/mkenvimage.c Signed-off-by: Wolfgang Denk <wd@denx.de>
| * fat.c: fix printf() length modifierAndreas Bießmann2011-12-17-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DIRENTSPERBLOCK utilizes sizeof() which will return a size_t which has no fixed size. Therefor use correct length modifer for printf() statement to prevent compiler warnings. This patch fixes following warning: ---8<--- fat.c: In function 'do_fat_read': fat.c:879: warning: format '%d' expects type 'int', but argument 4 has type 'long unsigned int' --->8--- Signed-off-by: Andreas Bießmann <biessmann@corscience.de> cc: Mike Frysinger <vapier@gentoo.org> cc: Thomas Chou <thomas@wytron.com.tw> cc: rjones@nexus-tech.net cc: kharris@nexus-tech.net Acked-by: Mike Frysinger <vapier@gentoo.org>
* | FAT: fix some issues in FAT write support codeAnatolij Gustschin2011-12-20-5/+14
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Writing a file to the FAT partition didn't work while a test using a CF card. The test was done on mpc5200 based board (powerpc). There is a number of problems in FAT write code: Compiler warning: fat_write.c: In function 'file_fat_write': fat_write.c:326: warning: 'counter' may be used uninitialized in this function fat_write.c:326: note: 'counter' was declared here 'l_filename' string is not terminated, so a file name with garbage at the end is used as a file name as shown by debug code. Return value of set_contents() is not checked properly so actually a file won't be written at all (as checked using 'fatls' after a write attempt with 'fatwrite' command). do_fat_write() doesn't return the number of written bytes if no error happened. However the return value of this function is used to show the number of written bytes in do_fat_fswrite(). The patch adds some debug code and fixes above mentioned problems and also fixes a typo in error output. NOTE: after a successful write to the FAT partition (under U-Boot) the partition was checked under Linux using fsck. The partition needed fixing FATs: -bash-3.2# fsck -a /dev/sda1 fsck 1.39 (29-May-2006) dosfsck 2.11, 12 Mar 2005, FAT32, LFN FATs differ but appear to be intact. Using first FAT. Performing changes. Signed-off-by: Anatolij Gustschin <agust@denx.de> Cc: Donggeun Kim <dg77.kim@samsung.com> Cc: Aaron Williams <Aaron.Williams@cavium.com> Acked-by: Donggeun Kim <dg77.kim@samsung.com>
* fs/fat/fat.c: Fix GCC 4.6 build warningWolfgang Denk2011-11-07-16/+19
| | | | | | | | | Fix: fat.c: In function 'fat_register_device': fat.c:74:19: warning: variable 'info' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de>
* fat: correct ATTR_VFAT checkJ. Vijayanand2011-10-27-3/+3
| | | | | | | | | ATTR_VFAT condition requires multiple bits to be set but the present condition checking in do_fat_read() & get_dentfromdir() ends up passing on even a single bit being set. Signed-off-by: J. Vijayanand <vijayanand.jayaraman@in.bosch.com> Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
* fs/fat/fat.c: fix warning: 'part_size' defined but not usedWolfgang Denk2011-10-27-2/+0
| | | | | | | | | Commit c30a15e "FAT: Add FAT write feature" introduced a compiler warning. Fix this. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Donggeun Kim <dg77.kim@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com>
* FAT: Add FAT write featureDonggeun Kim2011-10-26-0/+1093
| | | | | | | | | | | | | | In some cases, saving data in RAM as a file with FAT format is required. This patch allows the file to be written in FAT formatted partition. The usage is similar with reading a file. First, fat_register_device function is called before file_fat_write function in order to set target partition. Then, file_fat_write function is invoked with desired file name, start ram address for writing data, and file size. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* fat: replace LINEAR_PREFETCH_SIZE with PREFETCH_BLOCKSSergei Shtylyov2011-10-01-5/+4
| | | | | | | | | Currently in do_fat_read() when reading FAT sectors, we have to divide down LINEAR_PREFETCH_SIZE by the sector size, whereas it's defined as 2 sectors worth of bytes. In order to avoid redundant multiplication/division, introduce #define PREFETCH_BLOCKS instead of #define LINEAR_PREFETCH_SIZE. Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
* fat: root directory cluster only makes sense for FAT32Sergei Shtylyov2011-10-01-8/+6
| | | | | | | | | The root directory cluster field only exists in a FAT32 boot sector, so the 'root_cluster' variable in do_fat_read() contains garbage in case of FAT12/16. Make it contain 0 instead as this is what is passed to get_vfatname() in that case anyway. Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
* fat: cannot compare bytes and sectorsSergei Shtylyov2011-10-01-3/+4
| | | | | | | | | The code multiples the FAT size in sectors by the sector size and then tries to compare that to the number of sectors in the 'getsize' variable. While fixing this, also change the initial value of 'getsize' as the division of FATBUFSIZE by the sector size gets us FATBUFBLOCKS. Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
* fat: fix crash with big sector sizeSergei Shtylyov2011-10-01-37/+60
| | | | | | | | Apple iPod nanos have sector sizes of 2 or 4 KiB, which crashes U-Boot when it tries to read the boot sector into 512-byte buffer situated on stack. Make the FAT code indifferent to the sector size. Signed-off-by: Sergei Shtylyov <sshtylyov@mvista.com>
* scaled down version of generic libraries for SPLAneesh V2011-07-26-1/+5
| | | | Signed-off-by: Aneesh V <aneesh@ti.com>
* fat32 root directory handlingErik Hansen2011-04-02-14/+23
| | | | | | | | | | | | | | | Fat directory handling didn't check reaching the end of the root directory. It relied on a stop condition based on a directory entry with a name starting with a '\0' character. This check in itself is wrong ('\0' indicates free entry, not end_of_directory) but outside the scope of this fix. For FAT32, the end of the rootdir is reached when the end of the cluster chain is reached. The code didn't check this condition and started to read an incorrect cluster. This caused a subsequent read request of a sector outside the range of the usb stick in use. On its turn, the usb stick protested with a stall handshake. Both FAT32 and non-FAT32 (FAT16/FAT12) end or rootdir checks have been put in. Signed-off-by: Erik Hansen <erik@makarta.com>
* Switch from archive libraries to partial linkingSebastien Carlier2010-11-17-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
* FAT: buffer overflow with FAT12/16Stefano Babic2010-10-20-1/+1
| | | | | | | | | | | | | Last commit 3831530dcb7b71329c272ccd6181f8038b6a6dd0a was intended "explicitly specify FAT12/16 root directory parsing buffer size, instead of relying on cluster size". Howver, the underlying function requires the size of the buffer in blocks, not in bytes, and instead of passing a double sector size a request for 1024 blocks is sent. This generates a buffer overflow with overwriting of other structure (in the case seen, USB structures were overwritten). Signed-off-by: Stefano Babic <sbabic@denx.de> CC: Mikhail Zolotaryov <lebon@lebon.org.ua>
* VFAT: fix processing of scattered long file name entriesMikhail Zolotaryov2010-10-12-12/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The U-Boot code has the following bugs related to the processing of Long File Name (LFN) entries scattered across several clusters/sectors : 1) get_vfatname() function is designed to gather scattered LFN entries by cluster chain processing - that doesn't work for FAT12/16 root directory. In other words, the function expects the following input data: 1.1) FAT32 directory (which is cluster chain based); OR 1.2) FAT12/16 non-root directory (which is also cluster chain based); OR 1.3) FAT12/16 root directory (allocated as contiguous sectors area), but all necessary information MUST be within the input buffer of filesystem cluster size (thus cluster-chain jump is never initiated). In order to accomplish the last condition, root directory parsing code in do_fat_read() uses the following trick: read-out cluster-size block, process only first sector (512 bytes), then shift 512 forward, read-out cluster-size block and so on. This works great unless cluster size is equal to 512 bytes (in a case you have a small partition), or long file name entries are scattered across three sectors, see 4) for details. 2) Despite of the fact that get_vfatname() supports FAT32 root directory browsing, do_fat_read() function doesn't send current cluster number correctly, so root directory look-up doesn't work correctly. 3) get_vfatname() doesn't gather scattered entries correctly also is the case when all LFN entries are located at the end of the source cluster, but real directory entry (which must be returned) is at the only beginning of the next one. No error detected, the resulting directory entry returned contains a semi-random information (wrong size, wrong start cluster number and so on) i.e. the entry is not accessible. 4) LFN (VFAT) allows up to 20 entries (slots) each containing 26 bytes (13 UTF-16 code units) to represent a single long file name i.e. up to 520 bytes. U-Boot allocates 256 bytes buffer instead, i.e. 10 or more LFN slots record may cause buffer overflow / memory corruption. Also, it's worth to mention that 20+1 slots occupy 672 bytes space which may take more than one cluster of 512 bytes (medium-size FAT32 or small FAT16 partition) - get_vfatname() function doesn't support such case as well. The patch attached fixes these problems in the following way: - keep using 256 bytes buffer for a long file name, but safely prevent a possible buffer overflow (skip LFN processing, if it contains 10 or more slots). - explicitly specify FAT12/16 root directory parsing buffer size, instead of relying on cluster size. The value used is a double sector size (to store current sector and the next one). This fixes the first problem and increases performance on big FAT12/16 partitions; - send current cluster number (FAT32) to get_vfatname() during root directory processing; - use LFN counter to seek the real directory entry in get_vfatname() - fixes the third problem; - skip deleted entries in the root directory (to prevent bogus buffer overflow detection and LFN counter steps). Note: it's not advised to split up the patch, because a separate part may operate incorrectly. Signed-off-by: Mikhail Zolotaryov <lebon@lebon.org.ua>
* fs/fat: Big code cleanup.Wolfgang Denk2010-07-24-549/+630
| | | | | | | | - reformat - throw out macros like FAT_DPRINT and FAT_DPRINT - remove dead code Signed-off-by: Wolfgang Denk <wd@denx.de>
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