0xFFFF/doc/fiasco

 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