From: "Richard W.M. Jones" <[email protected]> Because of the risk that compilers might not emit the asm() block at the beginning of the option ROM, check that the ROM contains the required magic signature.
Signed-off-by: Richard W.M. Jones <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> --- scripts/signrom.py | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/scripts/signrom.py b/scripts/signrom.py index 6c8b9bf..5629bca 100644 --- a/scripts/signrom.py +++ b/scripts/signrom.py @@ -17,7 +17,10 @@ if len(sys.argv) < 3: fin = open(sys.argv[1], 'rb') fout = open(sys.argv[2], 'wb') -fin.seek(2) +magic = fin.read(2) +if magic != '\x55\xaa': + sys.exit("%s: option ROM does not begin with magic 55 aa" % sys.argv[1]) + size_byte = ord(fin.read(1)) fin.seek(0) -- 1.8.3.1
