Using the SCSI interface information from this example, the combined information that tells you this is a SCSI interface are the following (shown in bold, for highlighting purposes):

00

20

01

00

0x1000

0x0030

xx

Acpi(HWP0002,200)/Pci(10)

00

20

01

01

0x1000

0x0030

xx

Acpi(HWP0002,200)/Pci(11)

The vendor (0x1000) and device (0x0030) are the IDs for a SCSI interface. Of the devices with those IDs, this device has two channels (Fnc # of 00 followed by Fnc # of 01). Also, this SCSI interface has a non-numeric (XX) slot # indicating that it is on the system board.

2.From the EFI Shell prompt, enter the following command to obtain the controller’s handle for the SCSI interface:

Shell> devtree

A tree of all EFI-capable devices installed in the system displays. For example:

Shell> devtree Device Tree Ctrl[04]

Ctrl[0A] Acpi(HWP0002,0) Ctrl[12] Usb Open Host Controller Ctrl[13] Usb Open Host Controller Ctrl[14] Acpi(HWP0002,0)/Pci(1 2) Ctrl[15] PCI IDE/ATAPI Controller Ctrl[48] DW-28E

Ctrl[83] FAT File System [FAT32] 118 MB Ctrl[16] Acpi(HWP0002,0)/Pci(30)

Ctrl[49] Acpi(HWP0002,0)/Pci(30)/Mac(00306E4C4F1A) Ctrl[0B] Acpi(HWP0002,100)

Ctrl[17] LSI Logic Ultra320 SCSI Controller Ctrl[18] LSI Logic Ultra320 SCSI Controller Ctrl[19] Acpi(HWP0002,100)/Pci(20)

Ctrl[4B] Broadcom NetXtreme Gigabit Ethernet (BCM5701) Ctrl[0C] Acpi(HWP0002,200)

Ctrl[0D] Acpi(HWP0002,400) Ctrl[0E] Acpi(HWP0002,700) Ctrl[1A] Acpi(HWP0002,700)/Pci(10) Ctrl[1B] Acpi(HWP0002,700)/Pci(11) Ctrl[36] 16550 Serial UART Driver Ctrl[37] VT-100+ Serial Console Ctrl[31] Primary Console Input Device Ctrl[32] Primary Console Output Device

Specifying SCSI Parameters 339