[SeaBIOS] [PATCH RFC 4/7] buildrom.py: Handle PCI header checksum
Julian Pidancet
julian.pidancet at gmail.com
Fri Dec 16 15:15:10 CET 2011
This patch makes buildrom.py check if a PCI is present in the ROM,
and fills in the image size field.
Signed-off-by: Julian Pidancet <julian.pidancet at gmail.com>
---
tools/buildrom.py | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/tools/buildrom.py b/tools/buildrom.py
index 19b715a..7ed8107 100755
--- a/tools/buildrom.py
+++ b/tools/buildrom.py
@@ -28,6 +28,11 @@ def main():
data += "\0" * (alignpos(count, 512) - count)
count = len(data)
+ # Check if a pci header is present
+ pcidata = ord(data[24:25]) + (ord(data[25:26]) << 8)
+ if pcidata != 0:
+ data = data[:pcidata + 16] + chr(count/512) + chr(0) + data[pcidata + 18:]
+
# Fill in size field; clear checksum field
data = data[:2] + chr(count/512) + data[3:6] + "\0" + data[7:]
--
Julian Pidancet
More information about the SeaBIOS
mailing list