Hi Hilbert, Am 22.08.18 um 03:24 schrieb Hilbert Tu(杜睿哲_Pegatron): > Maybe you are right. But as I know, CRB Harcuvar is one of supported > board of Coreboot and it includes xHCI controller and USB interfaces.
Harcuvar is indeed supported by coreboot. But coreboot only initializes the hardware up to a point where an OS or bootloader can use it. The OS or bootloader still needs its own driver for the hardware. This is very different as in the legacy BIOS/UEFI case (a BIOS would provide a driver but coreboot doesn't). So if you want to use GRUB as a coreboot payload and use USB, GRUB needs its own driver for the xHCI. I would first try to confirm if or if not the xHCI works with other payloads (e.g. SeaBIOS, Tianocore, libpayload based) or an OS. Nico -- coreboot mailing list: [email protected] https://mail.coreboot.org/mailman/listinfo/coreboot
