96 lines
2.8 KiB
Plaintext
96 lines
2.8 KiB
Plaintext
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#
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# Copyright (c) 2019 Bolt Innovation Management, LLC
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# Copyright (c) 2019 Peter Bigot Consulting, LLC
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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menu "LittleFS Settings"
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visible if FILE_SYSTEM_LITTLEFS
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config FS_LITTLEFS_NUM_FILES
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int "Maximum number of opened files"
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default 4
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help
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This is a global maximum across all mounted littlefs filesystems.
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config FS_LITTLEFS_NUM_DIRS
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int "Maximum number of opened directories"
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default 4
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help
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This is a global maximum across all mounted littlefs filesystems.
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config FS_LITTLEFS_READ_SIZE
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int "Minimum size of a block read"
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default 16
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help
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All read operations will be a multiple of this value.
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config FS_LITTLEFS_PROG_SIZE
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int "Minimum size of a block program"
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default 16
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help
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All program operations will be a multiple of this value.
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config FS_LITTLEFS_CACHE_SIZE
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int "Size of block caches in bytes"
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default 64
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help
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Each cache buffers a portion of a block in RAM. The littlefs
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needs a read cache, a program cache, and one additional cache
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per file. Larger caches can improve performance by storing
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more data and reducing the number of disk accesses. Must be a
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multiple of the read and program sizes of the underlying flash
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device, and a factor of the block size.
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config FS_LITTLEFS_LOOKAHEAD_SIZE
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int "Size of lookahead buffer in bytes"
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default 32
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help
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A larger lookahead buffer increases the number of blocks found
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during an allocation pass. The lookahead buffer is stored as a
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compact bitmap, so each byte of RAM can track 8 blocks. Must
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be a multiple of 8.
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config FS_LITTLEFS_BLOCK_CYCLES
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int "Number of erase cycles before moving data to another block"
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default 512
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help
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For dynamic wear leveling, the number of erase cycles before data
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is moved to another block. Set to a non-positive value to
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disable leveling.
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menuconfig FS_LITTLEFS_FC_MEM_POOL
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bool "Enable flexible file cache sizes for littlefs"
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help
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littlefs requires a per-file buffer to cache data. For
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applications that use the default configuration parameters a
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memory slab is reserved to support up to
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FS_LITTLE_FS_NUM_FILES blocks of FS_LITTLEFS_CACHE_SIZE bytes.
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When applications customize littlefs configurations and
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support different cache sizes for different partitions this
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preallocation is inadequate.
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Select this feature to enable a memory pool allocator for
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littlefs file caches.
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if FS_LITTLEFS_FC_MEM_POOL
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config FS_LITTLEFS_FC_MEM_POOL_MIN_SIZE
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int "Minimum block size for littlefs file cache memory pool"
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default 16
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config FS_LITTLEFS_FC_MEM_POOL_MAX_SIZE
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int "Maximum block size for littlefs file cache memory pool"
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default 1024
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config FS_LITTLEFS_FC_MEM_POOL_NUM_BLOCKS
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int "Number of maximum sized blocks in littlefs file cache memory pool"
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default 2
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endif # FS_LITTLEFS_FC_MEM_POOL
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endmenu
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