Hello All, My platform is Intel camelback CRB, I use coreboot +intel FSP, BIOS can post to boot state, but on SeaBIOS init USB device have Happen initial time out issue, have some guys know the issue root Cause ? Thanks. Best Regards -James Scan for VGA option rom XHCI init on dev 00:14.0: regs @ 0xfea00000, 21 ports, 32 slots, 32 byte contexts XHCI protocol USB 2.00, 8 ports (offset 1), def 3001 XHCI protocol USB 3.00, 6 ports (offset 16), def 1000 XHCI extcap 0xc1 @ fea08040 XHCI extcap 0xc0 @ fea08070 XHCI extcap 0x1 @ fea0846c WARNING - Timeout at i8042_flush:71! EHCI init on dev 00:1a.0 (regs=0xfea18020) Found 0 lpt ports Found 1 serial ports AHCI controller at 1f.2, iobase fea17000, irq 5 EHCI init on dev 00:1d.0 (regs=0xfea19020) XHCI no devices found Initialized USB HUB (0 ports used) WARNING - Timeout at ehci_wait_td:515! ehci pipe=0x7ef73380 cur=7ef6ce00 tok=00000d00 next=7ef6cdc0 td=0x7ef6cdc0 status=80e80 WARNING - Timeout at ehci_wait_td:515! ehci pipe=0x7ef72b80 cur=7ef6ee00 tok=00000c00 next=7ef4fd80 td=0x7ef4fd80 status=80e80 WARNING - Timeout at ehci_waittick:178! Searching bootorder for: /pci@i0cf8/usb@1d/hub@1/storage@3/*@0/*@0,0 Searching bootorder for: /pci@i0cf8/usb@1d/hub@1/usb-*@3 WARNING - Timeout at ehci_waittick:165! Failure on hub port 0 detect WARNING - Timeout at ehci_wait_td:515! ehci pipe=0x000eee80 cur=00000000 tok=00000000 next=7ef6ccc0 td=0x7ef6ccc0 status=1f0c80 WARNING - Timeout at ehci_wait_td:515! ehci pipe=0x7ef72b80 cur=7ef6ee00 tok=00000000 next=7ef6ed80 td=0x7ef6ed80 status=80e80 WARNING - Timeout at ehci_waittick:165! USB transmission failed Unable to configure USB MSC drive. Unable to configure USB MSC device. WARNING - Timeout at ehci_waittick:165! Failure on hub port 3 reset WARNING - Timeout at ehci_wait_td:515! ehci pipe=0x7ef72b80 cur=7ef6ee00 tok=00000000 next=7ef6ed80 td=0x7ef6ed80 status=80e80 WARNING - Timeout at ehci_waittick:165! Failure on hub port 3 disconnect WARNING - Timeout at ehci_wait_td:515! ehci pipe=0x7ef72b80 cur=7ef6ee00 tok=00000000 next=7ef6cdc0 td=0x7ef6cdc0 status=80e80 WARNING - Timeout at ehci_waittick:165! Failure on hub port 2 disconnect WARNING - Timeout at ehci_wait_td:515! ehci pipe=0x7ef72b80 cur=7ef6ee00 tok=00000000 next=7ef4ed80 td=0x7ef4ed80 status=80e80 WARNING - Timeout at ehci_waittick:165! Failure on hub port 1 detect Initialized USB HUB (0 ports used) WARNING - Timeout at ehci_waittick:165! All threads complete. Scan for option roms