[coreboot] Re: DIY debug Dongle

2019-10-18 Thread Kyösti Mälkki
On Sun, Oct 13, 2019 at 1:28 AM wrote: > > Hi > I’ve seen an EHCI debug dongle in the old wiki. I’m trying to build one for 2 > purposes: debug a homebrew os/Shell and make it a new UEFI bootloader. > However I don’t know where to find further documentation or comments about > this. I also

[coreboot] Re: DIY debug Dongle

2019-10-14 Thread Insurgo
A not on EHCI debug, the screwdriver on Beaglebone black would need some loving but works: https://github.com/osresearch/heads/issues/541#issuecomment-481513900 On 10/14/19 10:53 AM, Nico Huber wrote: > On 13.10.19 16:40, Tom Hiller wrote: >> The wiki briefly mentions "usb_debug_io.c" with a

[coreboot] Re: DIY debug Dongle

2019-10-14 Thread Nico Huber
On 13.10.19 16:40, Tom Hiller wrote: > The wiki briefly mentions "usb_debug_io.c" with a link to an old trac > ticket.  Could a second device connected via usb only read the logs?  I > am curious on the feasibility of attaching an Android phone/tablet with > an app that could easily read coreboot

[coreboot] Re: DIY debug Dongle

2019-10-13 Thread Evgeny Zinoviev via coreboot
On 13.10.2019 10:27, Mike Banon wrote: With a couple of FT232H from china/aliexpress and two USB extension cables for them Actually, even just one FT232H plus one USB-UART (pl2303, for example) will work. ___ coreboot mailing list --

[coreboot] Re: DIY debug Dongle

2019-10-13 Thread Tom Hiller
I do not mean to hijack the question but is a hardware usb to serial device required? The wiki briefly mentions "usb_debug_io.c" with a link to an old trac ticket.  Could a second device connected via usb only read the logs?  I am curious on the feasibility of attaching an Android

[coreboot] Re: DIY debug Dongle

2019-10-13 Thread Mike Banon
Know I'm a bit late, but for me it was much easier to use FT232H-based USB board as a debug dongle. Initially I also wanted to build that FX2LP sandwich, but some confusion regarding the revisions (it's a bit tiresome to ask many sellers for a board revision in advance) and the need for