Michael Brown
cb37d92ff6
[romprefix] Display only one "Ctrl-B" prompt per PCI device during POST
If a multifunction PCI device exposes an iPXE ROM via each function,
then each function will display a "Press Ctrl-B to configure iPXE"
prompt, and delay for two seconds. Since a single instance of iPXE
can drive all functions on the multifunction device, this simply adds
unnecessary delay to the boot process.
Fix by inhibiting the "Press Ctrl-B" prompt for all except the first
function on a PCI device.
Signed-off-by: Michael Brown <mcb30@ipxe.org>