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2017-02-04util/blobtool: Add new tool for compiling/decompiling data blobsDamien Zammit
Given a specification of bitfields defined e.g. as follows: specfile: { "field1" : 8, "field2" : 4, "field3" : 4 } and a set of values for setting defaults: setterfile: { "field1" = 0xff, "field2" = 0xf, "field3" = 0xf } You can generate a binary packed blob as follows: ./blobtool specfile setterfile binaryoutput binaryoutput: ff ff The reverse is also possible, i.e. you can regenerate the setter: ./blobtool -d specfile binaryoutput setterorig setterorig: # AUTOGENERATED SETTER BY BLOBTOOL { "field1" = 0xff, "field2" = 0xf, "field3" = 0xf } This tool comes with spec/set files for X200 flash descriptor and ICH9M GbE region, and can be extended or used to decompile other data blobs with known specs. Change-Id: I744d6b421003feb4fc460133603af7e6bd80b1d6 Signed-off-by: Damien Zammit <damien@zamaudio.com> Reviewed-on: https://review.coreboot.org/17445 Tested-by: build bot (Jenkins) Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Martin Roth <martinroth@google.com>