After some reverse engineering, it appears that the keys of the
sb1 format are very weak: the 128 bytes are generated from the
laserfuse words 4,5 and 6 but in a weird manner: 4 and 5 are
simply ORed and 6 is only half used (somehow), making it "only" a
48 bit word to find.
Change-Id: I40702e19d0924ef51c01894efce3cb65bd664456
While elf simplification is a powerful tool it can be useful to
prevent it from happening for debug purposes. Also add a missing
switch description in usage() and missing static.
Change-Id: I80a1904dc4340c412bd3de1c124a2e38d6ac11a2
This is less useful is most cases because sb2 doesn't have the
size restritions but some elf are produced with one section per
file and still yield dozens or hundreds of sections. And this free
anyway so we can do it.
Change-Id: Ia5ca83a8375063ecc7052d1ea73b2b21c00be730
Load, fill and call/jump instructions are extracted as elf files
like for sb2. Because of the size limitations of the sb1
instructions, the resulting elf files can easily have hundreds of
sections. The (currently) implemented elf simplification method
will hopefully reduce this to a few sections only
Change-Id: I8fd6ed935ac3128f244bbd71c782e2a0a1c6d44a
Implement actual loading of a sb1 file to a structure in full
generality. Also implement dumping for debug purpose
Change-Id: I320035ea628719480a79aaccb05dce9a83256927
The STMP36xx series also uses .sb files but with a different
format. The main differences are the encryption and the lack of
sections, making it basically a list of commands: fill, load,
call, jump, switch mode, set sdram settings. Currently only the
sbtoelf has support for the sb1 and can only dump the list of
commands. Actual support for elf creation will come later.
Change-Id: I1f2e0230c91ac64efd0e8430e0c5212098c599fd
In the case of encrypted SB files without any key match, it is
still possible to dump the section headers. The force option
allows one to do so. It also allows to dump unencrypted sections
of encrypted files if there are some.
Change-Id: I36280230679ac5903f9c451c68c276f5c6959536
