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Date:      Mon, 4 Jan 2021 10:54:18 +0100
From:      =?utf-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com>
To:        Mark Millard <marklmi@yahoo.com>, Andy McClements <ajm@ip-ether.net>, freebsd-arm@freebsd.org, Robert Crowston <crowston@protonmail.com>
Subject:   Re: RPi4b 8GB 13.0-Current, XHCI broken, wrong U-Boot ?
Message-ID:  <D99BB5E9-BEDC-4718-B5F5-866747CC437E@googlemail.com>
In-Reply-To: <819ED63C-FB4C-41B6-BB06-3043C6F76D54@yahoo.com>
References:  <007c8658-b7b6-6852-536c-9c36af64506b@ip-ether.net> <D22EDD0F-8A8E-466C-BCEC-C8E2B3EA9A6B@googlemail.com> <aaefd44f-9dfd-be08-b446-d85c1df185a9@ip-ether.net> <5B626DCC-6F7C-4554-803C-F488A1ED9BEB@googlemail.com> <56d10ea4-3284-3e4c-9521-8bf1008caa2b@ip-ether.net> <26D146B8-0362-4008-9A1F-A6CD6B1479BB@googlemail.com> <6610c9a3-1e61-b7e5-c537-3080dd7ee8ae@ip-ether.net> <eb72b668-7a02-c873-5af8-b292b5eb12a5@ip-ether.net> <44de05f0-0c41-b6c8-b3f6-a4374f20eca1@ip-ether.net> <86961F76-0B50-48C5-B584-BB9DA21CC588@yahoo.com> <819ED63C-FB4C-41B6-BB06-3043C6F76D54@yahoo.com>

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just a small estimate
...

> Am 04.01.2021 um 09:35 schrieb Mark Millard via freebsd-arm <freebsd-arm@freebsd.org>:
> 
>> The most recent tag is at:
>> 
>> https://github.com/raspberrypi/firmware/commits/1.20201201

thanks for the link.
No surprise what we`ll find when we click the issue-tab on that website :
https://github.com/raspberrypi/firmware/issues/1518

Following the the last comment from u-boot-hacker Nicolas Saenz Julienne :
https://github.com/raspberrypi/firmware/issues/1518#issuecomment-750910297 :
..
IIUC you are also triggering an xHC firmware load through the mailbox interface. AFAIK this mailbox interface expects a configured PCIe bus honoring whatever is in DT.
..
Whereas edkII doesn’t expose PCIe afaik, Rob Crowston doesn’t have problems with the mailbox :
https://github.com/freebsd/freebsd-src/blob/098dbd7ff7f3da9dda03802cdb2d8755f816eada/sys/arm/broadcom/bcm2835/bcm2838_xhci.c#L169


> Am 04.01.2021 um 09:35 schrieb Mark Millard via freebsd-arm <freebsd-arm@freebsd.org>:
> 
>> The Raspberry Pi folks warn against picking up firmware from
>> Master unless requested to by them. 
> 
Yes, and
thanks to Andy McClements we exactly know(at the moment) , what to pickup and what not.

So the Nicolas Saenz- hack is included in https://reviews.freebsd.org/D26853 and fell in love with Rob`s mbox-hack :-) ..as far as I understand..

Everything else , I guess, what Nicolas Saenz is preparing for upcoming u-boot versions should be handled later with the next fbsd-u-boot-port 


Regards

K.



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