49 lines
2.5 KiB
Plaintext
49 lines
2.5 KiB
Plaintext
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Description of flash.cfg format for DAF
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=======================================
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1. each line define one partition
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2. maximum number of partitions is 16
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3. order of partitions is same like order of lines in the file
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4. line format: <partition name> <flags/type> <size> <data filename>
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partition name - up to 15 chars, shown in MTD later.
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size - can be related to filesize: "filesize", "filesize+10M", "filesize+10b",
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or have fixed size: "10M", "100b"
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[M - means Megabytes, b - menas blocks (each NAND block is 128kbytes)]
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can be "allsize" for auto size partition. 5% added for RW partitions.
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flags/type - can be different values:
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types:
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"ya" - YAFFS2 partition. MAGLDR can show root directory context or read kernel/initrd from it.
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"raw" - RAW data.
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"yboot" - this partition contains zImage and initrd.gz for kernel boot in YAFFS2 format
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"yrecov" - this partition contains zImage and initrd.gz for recovery boot in YAFFS2 format
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"rboot" - this partition contains zImage and initrd.gz for kernel boot in RAW (like in native Android devices) format
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"rrecov" - this partition contains zImage and initrd.gz for recovery boot in RAW (like in native Android devices) format
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flags:
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"ro" - disable add extra 5% to partition size and count bad blocks into size
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"asize" - auto size. this partition will use all available space after other partitions. only one partition can have this type.
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"nospr" - binary data have not spare data. (2048+0 format), otherwise 2048+64 format used.
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"nors" - use exactly specified size for partition. no resize is done.
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"hr" - this partition must be erased if user select "AD HardReset" in MAGLDR menu.
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different flags and types separated via "|" symbol, like "boot|ya|ro",
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if more than one flag specified, value of last flag used. \
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example: "yboot|rboot", it will be same like "rboot"
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Examaple Of file:
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boot yboot|ro filesize+2M boot.img
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recovery rrecov|ro|nospr filesize recovery-raw.img
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system ya filesize system.img
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cache ya 40M
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userdata ya|asize|hr allsize
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this means that nand have 5 partitions (count of lines),
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last partition use all available space (allsize),
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"AD Hardreset" erase last partition,
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regular kernel boot done from YAFFS2 partition,
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recovery boot done from RAW partition
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-Cotulla
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