Product Specification
Page 77
... SMM Phase 0x4D CPU DXE SMM Phase begin 0x4E Relocate SM bases for all APs 0x4F CPU DXE SMM Phase end IO BUSES 0x50 Enumerating PCI buses 0x51 Allocating resources to PCI bus 0x52 Hot Plug PCI controller initialization USB 0x58 Resetting USB bus 0x59 Reserved for USB ATA/ATAPI/SATA 0x5A Resetting PATA...
... SMM Phase 0x4D CPU DXE SMM Phase begin 0x4E Relocate SM bases for all APs 0x4F CPU DXE SMM Phase end IO BUSES 0x50 Enumerating PCI buses 0x51 Allocating resources to PCI bus 0x52 Hot Plug PCI controller initialization USB 0x58 Resetting USB bus 0x59 Reserved for USB ATA/ATAPI/SATA 0x5A Resetting PATA...