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