Artesyn COMX-P2020 BSP User Guide (July 2014) - Manual (Page 64)

U-boot Deployment
COMX-P2020 BSP User Guide (6806800L84B) 64
PCIE1 on bus 03 - 04
The U-boot provides standard command "pci" to probe and configure PCI Express devices. This
part is not included in this document.
=> pci
Scanning PCI devices on bus 0
BusDevFun VendorId DeviceId Device Class Sub-Class
_____________________________________________________________
00.00.00 0x1957 0x0070 Processor 0x20
=> help pci
pci - list and access PCI Configuration Space
Usage:
pci [bus] [long]
- short or long list of PCI devices on bus 'bus'
pci header b.d.f
- show header of PCI device 'bus.device.function'
pci display[.b, .w, .l] b.d.f [address] [# of objects]
- display PCI configuration space (CFG)
pci next[.b, .w, .l] b.d.f address
- modify, read and keep CFG address
pci modify[.b, .w, .l] b.d.f address
- modify, auto increment CFG address
pci write[.b, .w, .l] b.d.f address value