Hello Hilbert, Am 21.08.18 um 12:09 schrieb Hilbert Tu(杜睿哲_Pegatron): > From BWG(BIOS Write Guide), there are two steps needed to be done for USB to > work: > > 1. Pre-Operating Software Initialization > > 2. EHCI Initialization for Pre-OS Software Usage > > Does anyone know where these steps are implemented in Coreboot? > Thanks.
I don't but my educated guess is: 1. In FSP. 2. Your payload. Though, there is a pitfall I guess. If the public datasheet for Den- verton is correct, there is *no* EHCI. And this might be your actual problem: If you only have an xHCI controller, it doesn't work with GRUB simply because GRUB doesn't have a driver for xHCI. AFAIK, nobody wrote one yet. > > -Hilbert > This e-mail and its attachment may contain information that is > confidential or privileged, and are solely for the use of the individual > to whom this e-mail is addressed. If you are not the intended recipient > or have received it accidentally, please immediately notify the sender > by reply e-mail and destroy all copies of this email and its attachment. > Please be advised that any unauthorized use, disclosure, distribution or > copying of this email or its attachment is strictly prohibited. This footer makes absolutely no sense when you address a mailing list. I wouldn't be surprised if you get less answers because of it. Nico
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