diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/scripts/signrom.py | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/scripts/signrom.py')
-rw-r--r-- | qemu/scripts/signrom.py | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/qemu/scripts/signrom.py b/qemu/scripts/signrom.py new file mode 100644 index 000000000..f9c35ccfc --- /dev/null +++ b/qemu/scripts/signrom.py @@ -0,0 +1,40 @@ +# +# Option ROM signing utility +# +# Authors: +# Jan Kiszka <jan.kiszka@siemens.com> +# +# This work is licensed under the terms of the GNU GPL, version 2 or later. +# See the COPYING file in the top-level directory. + +import sys +import struct + +if len(sys.argv) < 3: + print('usage: signrom.py input output') + sys.exit(1) + +fin = open(sys.argv[1], 'rb') +fout = open(sys.argv[2], 'wb') + +fin.seek(2) +size = ord(fin.read(1)) * 512 - 1 + +fin.seek(0) +data = fin.read(size) +fout.write(data) + +checksum = 0 +for b in data: + # catch Python 2 vs. 3 differences + if isinstance(b, int): + checksum += b + else: + checksum += ord(b) +checksum = (256 - checksum) % 256 + +# Python 3 no longer allows chr(checksum) +fout.write(struct.pack('B', checksum)) + +fin.close() +fout.close() |