In need of porting assistance - HP Spectre x360 13-w0XX (kabylake)

[Evgenii Moz.]

Hello.
For some time now I've been trying to port my laptop with no luck, yet.
Here's what I did:
•	I recovered all the log's from the system, as per
Motherboard_Porting_Guide and coreboot-collector.
•	Took apart my laptop and dumped eeproms via soldering off, it
appears I have w25q80dv - 8mbit and w25q64fv - 64mbit. I made sure the
dumps are valid, doublechecked via diff and purged the eeproms, system
booted normally when I flashed the dumps back.
•	I made an amature coreboot config based on Mimoja's Razer Blade
Stealth (2016) H2U which is now merged. I failed in adapting
devicetree.cb and left it as is. The laptop showed no signs of life
(dead PB and no lights) after externally flashing w25q64fv - 64mbit
with coreboot combined with original Descriptor and stripped down ME
via nconfig (probably should not have done that for 1st boot). Flashed
the dumps back, no bork just yet =)
•	I have yet to create a position on Gerrit.
P.S. not including the eeprom dumps, too heavy for a public mailing
list. Will send on demand.

I would be glad to receive any help, please do guide me.


-- 

Mozhaaak

[Benjamin Doron]

Hi,
With no working power button or LEDs, I would suspect an EC issue. Have you
examined what the dumps contained?

Cleaning ME doesn't help (I found that out too). I'm also going to assume
that your laptop has neither Boot Guard nor HP SureStart (as I understand,
Boot Guard implemented in the EC?)

On Mon., Mar. 16, 2020, 8:18 a.m. Evgenii Moz. via coreboot, <
[e-mail]> wrote:
> Hello.
> For some time now I've been trying to port my laptop with no luck, yet.
> Here's what I did:
> • I recovered all the log's from the system, as per
> Motherboard_Porting_Guide
> <https://www.coreboot.org/Motherboard_Porting_Guide> and
> coreboot-collector <https://github.com/system76/coreboot-collector>.
> • Took apart my laptop and dumped eeproms via soldering off, it appears I
> have w25q80dv - 8mbit
> <https://www.winbond.com/resource-files/w25q80dv_revf_02112015.pdf> and w25q64fv
> - 64mbit
> <https://www.winbond.com/resource-files/w25q64fv%20revq%2006142016.pdf>.
> I made sure the dumps are valid, doublechecked via diff and purged the
> eeproms, system booted normally when I flashed the dumps back.
> • I made an amature coreboot config based on Mimoja's Razer Blade Stealth
> (2016) H2U <https://review.coreboot.org/c/coreboot/+/34475> which is now
> merged. I failed in adapting *devicetree.cb* and left it as is. The
> laptop showed no signs of life (dead PB and no lights) after externally
> flashing w25q64fv - 64mbit
> <https://www.winbond.com/resource-files/w25q64fv%20revq%2006142016.pdf>
> with coreboot combined with original *Descriptor* and stripped down *ME*
> via nconfig (probably should not have done that for 1st boot). Flashed the
> dumps back, no bork just yet =)
> • I have yet to create a position on Gerrit <https://review.coreboot.org>.
> *P.S. not including the eeprom dumps, too heavy for a public mailing list.
> Will send on demand.*
>
> I would be glad to receive any help, please do guide me.
>
> Mozhaaak
> _______________________________________________
> coreboot mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]

Hello,
I'm starting the port from scratch, managed to find legit docs for my model. Message me in private if you need it. There doesn't seem to be any sign of Boot Guard in the original bios, just Bios Guard via TPM. I figure it might just be the TPM, good thing I can disable and clear it. I also built custom ME parts with Intel Flash Image Tool disabling all the nonsence. I'll create a gerrit page once I have something.
Regards.