forked from Archive/PX4-Autopilot
67 lines
2.1 KiB
Plaintext
67 lines
2.1 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see misc/tools/kconfig-language.txt.
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#
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config FS_FAT
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bool "FAT file system"
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default n
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depends on !DISABLE_MOUNTPOINT
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---help---
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Enable FAT filesystem support
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if FS_FAT
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config FAT_LCNAMES
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bool "FAT upper/lower names"
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default n
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---help---
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Enable use of the NT-style upper/lower case 8.3
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file name support.
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config FAT_LFN
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bool "FAT long file names"
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default n
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---help---
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Enable FAT long file names. NOTE: Microsoft claims
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patents on FAT long file name technology. Please read the
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disclaimer in the top-level COPYING file and only enable this
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feature if you understand these issues.
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config FAT_MAXFNAME
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int "FAT maximum file name size"
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depends on FAT_LFN
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---help---
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If CONFIG_FAT_LFN is defined, then the default, maximum long file
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name is 255 bytes. This can eat up a lot of memory (especially stack
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space). If you are willing to live with some non-standard, short long
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file names, then define this value to be something more reasonable. A
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good choice would be the same value as selected for NAME_MAX which will
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limit the visibility of longer file names anyway.
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config FS_FATTIME
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bool "FAT timestamps"
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default n
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---help---
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Support FAT date and time. NOTE: There is not
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much sense in supporting FAT date and time unless you have a
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hardware RTC or other way to get the time and date.
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config FAT_DMAMEMORY
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bool "DMA memory allocator"
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default n
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---help---
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The FAT file system allocates two I/O buffers for data transfer, each
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are the size of one device sector. One of the buffers is allocated
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once for each FAT volume that is mounted; the other buffers are
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allocated each time a FAT file is opened.
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Some hardware, however, may require special DMA-capable memory in
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order to perform the the transfers. If FAT_DMAMEMORY is defined
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then the architecture-specific hardware must provide the funtions
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fat_dma_alloc() and fat_dma_free(): fat_dmalloc() will allocate
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DMA-capable memory of the specified size; fat_dmafree() is the
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corresponding function that will be called to free the DMA-capable
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memory.
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endif
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