static void amd8111_enable_rom(void) { unsigned char byte; device_t dev; /* Enable 5MB rom access at 0xFFB00000 - 0xFFFFFFFF */ /* Locate the amd8111 */ dev = pci_io_locate_device(PCI_ID(0x1022, 0x7468), 0); /* Set the 5MB enable bits */ byte = pci_io_read_config8(dev, 0x43); byte |= 0xC0; pci_io_write_config8(dev, 0x43, byte); }