valentineus/0xFFFF
1
Fork 0
Code Releases Activity

Update fiasco documentation, now is on 95% complete

Browse Source
This commit is contained in:
Pali Rohár committed 2012-06-23 17:03:25 +02:00
1 parent 2110196958
commit 58c0dbe275
1 file changed
+28 -22
Download Patch File Download Diff File Expand all files Collapse all files
doc/fiasco
+28 -22
View File
@@ -1,3 +1,6 @@
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!
-----------------------------------------------
@@ -8,36 +11,39 @@ SPECS FOR TEH FIASCO FIRMWARE FILE FORMAT ffff!
FILE HEADER
1 byte = 0xb4 -- signature
4 bytes -- firmware name length (big endian)
6 bytes -- versioning info ( byte 4 is format version )
N-6 bytes -- firmware name (zero fill)
4 bytes -- FW header length (big endian)
PIECE HEADER
FW HEADER
1 byte = 0x54 -- piece signature
1 byte -- unknown:
N800/N810:
0x02 - initfs, rootfs, kernel (2007)
0x03 - xloader, 2nd, secondary, kernel (DIABLO)
N900:
0x03 - kernel, rootfs, cmt-2nd, cmt-algo, cmt-mcusw
0x04 - xloader, 2nd, secondary
0x05 - mmc
4 bytes -- count of blocks (big endian)
block {
1 byte -- type of block
0xE8 - header
0x31 - FW name
1 byte -- length of data
N bytes -- block data
}
IMAGE
1 byte = 0x54 -- signature
1 byte -- number of subsections + 1
5 bytes -- unknown (always 0x2e 0x19 0x01 0x01 0x00)
2 bytes -- checksum for the piece contents (xorpair)
12 bytes -- piece name (first byte is FF if is the last)
4 bytes -- piece size (big endian)
2 bytes -- checksum for the image contents (xorpair)
12 bytes -- image name type (first byte is FF if is the last)
4 bytes -- image size (big endian)
4 bytes -- unknown (always 0x00 0x00 0x00 0x00)
block {
1 byte -- if (value '1'-'4' or '/') { ..there's a comment.. }
1 byte -- type of subsection
'1' - version
'2' - device & hw revisions
'2' - device & hw revisions (separated by char 0, max size of device is 16, hw revision 8)
'3' - layout
'4' - unknown
'/' - unknown
1 byte -- length of comment
N bytes -- comment
1 byte -- length of subsection
N bytes -- subsection data
}
N bytes -- piece data
1 byte -- unknown (maybe end of subsections?)
N bytes -- image data