Xen project Mailing List

Andrii,

2019年1月16日(水) 16:40、Andrii Anisov さん（andrii.anisov@xxxxxxxxx）のメッセージ:

Hello Jairo,

On 08.01.19 19:04, LOPEZ, FUENTES NACARINO Jairo Eduardo wrote:

> I have noticed that the uboot date has not changed from 2015.04
It is not a u-boot date, but upstream version. Renesas derived u-boot from mainline version 2015.04 and put their patches on top of it.

> although the build date is from the last time I ran a bitbake command.
So it should be ok.

> Are there any other modifications that I can attempt?
I'm pretty sure you faced the issue, which is discussed here [1].
You should merge memory nodes in your device tree, as it is done here [2].

Actually the proper way to sort out the root cause is to build XEN with debug and earlyprintk enabled. But it is quite tricky while building XEN using Yocto.
You should pass build command line options for debug build and earlyprintk, but in Yocto command lines are buried in recipes.

BTW, I've got an idea that it would be good to make debug build option as well as earlyprintk configurable through .config only.

[1] https://lists.xenproject.org/archives/html/xen-devel/2017-07/msg02479.html
[2] https://github.com/xen-troops/meta-demo/blob/master/meta-rcar-gen3-xen/recipes-kernel/linux/linux-renesas/r8a7795-salvator-x-xen.dts#L61

--
Sincerely,
Andrii Anisov.

When I sent that mail I was using the Yocto 2.23 instructions.

Since I didn't get any new information and since I had apparently been able to safely upgrade the firmware, I attempted to up the version of everything.

I understand that the current yocto environment might be unfriendly to enable debugging information but I am willing to help in implementing it if you have an idea. There is nothing more frustrating than being met with a completely blank output.

When using the Yocto 2.23 instructions I did not come across the issues you pointed out, so I will take those into consideration should I need to downgrade the versions again.

Thanks for all the help.

Best regards,

Jairo

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