diff options
| -rw-r--r-- | src/pciinit.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/pciinit.c b/src/pciinit.c index 9109739e..23b79bcb 100644 --- a/src/pciinit.c +++ b/src/pciinit.c @@ -27,7 +27,11 @@ static u32 pci_bar(u16 bdf, int region_num) if (region_num != PCI_ROM_SLOT) { return PCI_BASE_ADDRESS_0 + region_num * 4; } - return PCI_ROM_ADDRESS; + +#define PCI_HEADER_TYPE_MULTI_FUNCTION 0x80 + u8 type = pci_config_readb(bdf, PCI_HEADER_TYPE); + type &= ~PCI_HEADER_TYPE_MULTI_FUNCTION; + return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS; } static void pci_set_io_region_addr(u16 bdf, int region_num, u32 addr) |