[coreboot] How to disassembly the coreboot.rom file

[tturne at codeaurora.org]

I didn't copy group on original reply, my bad.

On 2017-04-13 11:40, tturne at codeaurora.org wrote:
> On 2017-04-13 05:07, Maxim Gusev via coreboot wrote:
>> Hello, friends
>> 
>> I have a couple of questions.
>> 
>> When I run the coreboot on my motherboard it doesn't work.
>> 
>> I have some IPs of instructions which I received by JTAG.
>> 
>> So I want to see the instructions that are plased in the final object
>> file.
>> 
>> How to disassembly the coreboot.rom file?
> 
> ./cbfstool --help is your friend
> 
> What you need to do is list the FMAP regions in the device, e.g.
> ./cbfstool coreboot.rom layout
> You can read a whole FMAP region into its own file and/or extract a
> payload directly
> 
> Pay attention to these sub-commands:  layout, print, extract and read
> 
> I was able to extract a payload from a recovery image coreboot.rom and
> confirm Depthcharge was the payload, using cbfstool to extract the
> payload and strings to list the ASCII strings in the file.  Once you
> have the elf file extracted you can use bin-utils tools directly to
> disassemble, etc.
> Cheers,
> T.mike
> 
>> 
>> As I know it has the filesystem CBFS. So it is not the object file.
>> 
>> I can to disasembler the object files placed in ./build/* that have
>> the *.o format
>> 
>> but I don't know in which of them there are corresponding
>> instructions.
>> 
>> Thanks.
>> 
>> Regards, Maxim