50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
Copyright (C) 2007-2011 pancake <pancake@youterm.com>
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Copyright (C) 2011-2012 Pali Rohár <pali.rohar@gmail.com>
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SPECS FOR TEH FIASCO FIRMWARE FILE FORMAT ffff!
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-----------------------------------------------
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These notes has not been taken properly and may be wrong. It must
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be revised to fit the reality. But this is mostly a general idea:
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FILE HEADER
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1 byte = 0xb4 -- signature
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4 bytes -- FW header length (big endian)
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FW HEADER
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4 bytes -- count of blocks (big endian)
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block {
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1 byte -- type of block
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0xE8 - header
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0x31 - FW name
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1 byte -- length of data
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N bytes -- block data
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}
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IMAGE
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1 byte = 0x54 -- signature
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1 byte -- number of subsections + 1
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5 bytes -- unknown (always 0x2e 0x19 0x01 0x01 0x00)
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2 bytes -- checksum for the image contents (xorpair)
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12 bytes -- image name type (first byte is FF if is the last)
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4 bytes -- image size (big endian)
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4 bytes -- unknown (always 0x00 0x00 0x00 0x00)
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block {
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1 byte -- type of subsection
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'1' - version
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'2' - device & hw revisions (separated by char 0, max size of device is 16, hw revision 8)
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'3' - layout
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'4' - unknown
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'/' - unknown
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1 byte -- length of subsection
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N bytes -- subsection data
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}
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1 byte -- unknown (maybe end of subsections?)
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N bytes -- image data
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