Re: [coreboot] PCI passthrough on ASUS KGPE-D16

[Timothy Pearson]

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On 10/03/2016 06:09 PM, Mike Banon wrote:
> Correct me if I am wrong, but I think: IOMMU support means that a
> graphics card passthrough is possible (this is binary: IOMMU yes ==>
> possible / no ==> not possible). If IOMMU support is buggy (which
> seems to be commonly found with proprietary BIOS) maybe your system
> could experience some bugs while you are using this feature. Of course
> the most reliable way to find out is to try it, but I am pretty sure
> that coreboot's IOMMU support is good

I am 99% sure this functions correctly.  It's been a while but I think
it was tested early this year as part of the coreboot support bringup.

Bear in mind the usual caveats apply; if you're not using the open
source drivers for your card the manufacturer may have locked out
passthrough, etc.  nVidia is especially famous for this.

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Re: [coreboot] PCI passthrough on ASUS KGPE-D16

[Mike Banon]

Correct me if I am wrong, but I think: IOMMU support means that a
graphics card passthrough is possible (this is binary: IOMMU yes ==>
possible / no ==> not possible). If IOMMU support is buggy (which
seems to be commonly found with proprietary BIOS) maybe your system
could experience some bugs while you are using this feature. Of course
the most reliable way to find out is to try it, but I am pretty sure
that coreboot's IOMMU support is good

On Sun, Oct 2, 2016 at 9:04 PM, Zoran Stojsavljevic
 wrote:
>> Would it be possible to passthrough a graphics card to a virtual machine
>> while using Coreboot/Libreboot?
>
> Hello opteron/AMD supporter,
>
> You did ask very (very, should say extremely) tricky question, you do know
> this (I betcha you do, don't you)??? ;-)
>
> Zoran
> ___
>
> On Sun, Oct 2, 2016 at 6:22 PM,  wrote:
>>
>> Hi,
>>
>> would it be possible to passthrough a graphics card to a virtual machine
>> while using Coreboot/Libreboot? The libreboot website says that the
>> motherboard offers full IOMMU-support when using a CPU from the Opteron
>> 6200/6300 series.
>>
>> https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF
>> https://libreboot.org/docs/hcl/kgpe-d16.html
>>
>> --
>> coreboot mailing list: coreboot@coreboot.org
>> https://www.coreboot.org/mailman/listinfo/coreboot
>
>
>
> --
> coreboot mailing list: coreboot@coreboot.org
> https://www.coreboot.org/mailman/listinfo/coreboot

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Re: [coreboot] Adapting Linux kernel documentation setup with Sphinx and reStructuredText

[Martin Roth]

Zaolin has been working for a while on updating our documentation, and his
plan is to switch coreboot to using Hugo for our documentation manager.[1]
 Hugo supports various different markup languages, including markdown,
html, RestructuredText, and AsciiDoc. [2]

I meant to send the list an email a while back about doing this, but got
sidetracked with other projects.  It's just been picked back up, so if
anyone has any thoughts, please feel free to comment, either here or in his
patches.  [3] [4]

We're going to try to switch away from the wiki for our documentation.  The
wiki is great for some things, but not so good for other things.  The
thought is that if we keep the documentation in the coreboot tree, in an
accessible format, people will be able to contribute to it more easily, and
it will hopefully stay more up-to-date.  The plan is to move some of the
documentation out of the wiki into the Documentation folder and adding new
documentation shortly.

And, as always, any documentation contributions would be greatly
appreciated. [5]

Martin

[1] https://gohugo.io/
[2] https://gohugo.io/content/supported-formats
[3] https://review.coreboot.org/#/c/16853/
[4] https://review.coreboot.org/#/c/16787/
[5] Please.

On Mon, Oct 3, 2016 at 1:56 AM, Paul Menzel via coreboot <
coreboot@coreboot.org> wrote:

> Dear coreboot folks,
>
>
> The Linux kernel switched to Sphinx and reStructuredText [1] for its
> documentation [2][3][4].
>
> Would it make sense to also use that for coreboot? I would see the
> following benefits.
>
> 1. It’s easier to import code like drivers from the Linux kernel to
> coreboot.
> 2. Developers familiar with the Linux kernel have it easier to work on
> coreboot.
> 3. The coreboot project could import all improvements the Linux kernel
> documenation gets.
>
>
> Thanks,
>
> Paul
>
>
> [1] https://en.wikipedia.org/wiki/ReStructuredText
> [2] https://static.lwn.net/kerneldoc/index.html
> [3] https://lwn.net/Articles/692704/
> "Kernel documentation with Sphinx, part 1: how we got here"
> [4] https://lwn.net/Articles/692705/
> "Kernel documentation with Sphinx, part 2: how it works
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Re: [coreboot] How to pass custom defined data from Coreboot to GRUB2

[Paul Menzel via coreboot]

Dear Mohan,


Am Montag, den 03.10.2016, 11:06 + schrieb Mohan Shanmuga Sundaram:
> I have a requirement to pass the state value of a GPIO (on Intel ATOM
> Baytrail SoC) from Coreboot to GRUB2. Based on this GPIO state, I
> would script the GRUB2 to configuration to select an alternative OS
> from the GRUB menu list. Is there a facility to pass this custom
> defined data from Coreboot to GRUB2?

I suggest to use CBTABLES for that. GRUB also can read that.


Thanks,

Paul


[1] grub-core/kern/i386/coreboot/cbtable.c


PS: Please note, that coreboot is written all lowercase.
PPS: Please don’t add the disclaimer to the end of your messages.
PPPS: Please just send plain text messages, and no HTML ones.

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[coreboot] How to pass custom defined data from Coreboot to GRUB2

[Mohan Shanmuga Sundaram]

Hi!
I have a requirement to pass the state value of a GPIO (on Intel ATOM Baytrail 
SoC) from Coreboot to GRUB2. Based on this GPIO state, I would script the GRUB2 
to configuration to select an alternative OS from the GRUB menu list. Is there 
a facility to pass this custom defined data from Coreboot to GRUB2?

Regards,
Mohan

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[coreboot] Adapting Linux kernel documentation setup with Sphinx and reStructuredText

[Paul Menzel via coreboot]

Dear coreboot folks,


The Linux kernel switched to Sphinx and reStructuredText [1] for its
documentation [2][3][4].

Would it make sense to also use that for coreboot? I would see the
following benefits.

1. It’s easier to import code like drivers from the Linux kernel to
coreboot.
2. Developers familiar with the Linux kernel have it easier to work on
coreboot.
3. The coreboot project could import all improvements the Linux kernel
documenation gets.


Thanks,

Paul


[1] https://en.wikipedia.org/wiki/ReStructuredText
[2] https://static.lwn.net/kerneldoc/index.html
[3] https://lwn.net/Articles/692704/
    "Kernel documentation with Sphinx, part 1: how we got here"
[4] https://lwn.net/Articles/692705/
    "Kernel documentation with Sphinx, part 2: how it works

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