pci: allow loading roms via fw_cfg.

This patch adds a pci bus property 'rombar' which specifies whenever
the pci rom should be loaded via pci rom bar (default) or via fw_cfg.
The later can be used for compatibility with older qemu versions where
no pci rom bar is present.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/hw/pci.h b/hw/pci.h
index 9b5ae9798..ed048f546 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -177,6 +177,7 @@ struct PCIDevice {
     /* Location of option rom */
     char *romfile;
     ram_addr_t rom_offset;
+    uint32_t rom_bar;
 };
 
 PCIDevice *pci_register_device(PCIBus *bus, const char *name,