Dear Gerd,

Am 25.05.20 um 11:06 schrieb Gerd Hoffmann:
The MODESEGMENT condition is backwards, with the effect that
mmconfig mode is not used to configure pci bars during POST.

Oops.  Fix it.

The only real mode pci config space access seems to come from the
ipxe option rom initialiation.  Which happens to work via mmconfig


because it runs in big real mode so this went unnoticed ...

Fixes: 6a3b59ab9c7d ("pci: add mmconfig support")
Signed-off-by: Gerd Hoffmann <>
  src/hw/pci.c | 12 ++++++------
  1 file changed, 6 insertions(+), 6 deletions(-)


Reviewed-by: Paul Menzel <>

Kind regards,

SeaBIOS mailing list --
To unsubscribe send an email to

Reply via email to