Re: [Qemu-devel] Boot order problem and disable iPXE/gPXE

[Gerhard Wiesinger]

On Sat, 7 Jan 2012, Gerhard Wiesinger wrote:
> No NIC:
> -net none
> => No iPXE ROM (correct).
>
> but with the previously listed config no iPXE ROM should be there. Saw this 
> is done through paravirtualization from Seabios/QEMU or KVM. So there
> must be a bug with the empty romfile options with net or device (I guess) in 
> QEMU/KVM.

I think I found the bug:
pcnet-pci.c
static int pci_pcnet_init(PCIDevice *pci_dev)
{
...
    if (!pci_dev->qdev.hotplugged) {
        static int loaded = 0;
        if (!loaded) {
            rom_add_option("pxe-pcnet.rom", -1);
            loaded = 1;
        }
    }

Option rom is added unconditionally regardless of command line options 
due to hot plug feature ...

grep -ir rom_add_option .
./ne2000.c:            rom_add_option("pxe-ne2k_pci.rom", -1);
NE2000 also has the same problem.

RTL8139 and all others are done through romfile which are working 
correct:
./rtl8139.c:    .romfile    = "pxe-rtl8139.rom",

Ciao,
Gerhard

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