Hi
Just to confirm what Jean-Christophe said on today's meeting: U-Boot
has disk/part_efi.c added in September 2008:
Add support for CONFIG_EFI_PARTITION (GUID Partition Table)
so it's indeed GPT support.
It's currently being turned on for two NVIDIA Tegra2 boards: Harmony
and Seaboard.
(I didn't try it out.)
One open question we had from last week's meeting is whether we can
have backwards-compatible entries for e.g. boot ROMs in current SoCs as
to use GPT for UEFI compatibility but with the relevant "PC" partitions
entries as to allow booting.
Cheers,
--
Loïc Minier
Meeting minutes are in:
https://wiki.linaro.org/OfficeofCTO/BootArchitecture/2011-10-06
In particular note
- the decision for the focus in a two-pronged approach for short and
long term goals ( see
https://wiki.linaro.org/OfficeofCTO/BootArchitecture/2011-10-06#Minutes
for details, below is just a summary)
+ SHORT TERM pain points are summarized below - the list needs
priorization and to be shown to the TSC so that suitable resources are
assigned to do the work
- support for Uboot
- kernel update process/method
- making every uboot behave the same way
- how does uboot decide what kernel to load - does not have to be
uboot specific fix, could be a script for uboot
- single zImage able to boot on multiple SOCs
- support for grub on uboot.
- Port tianocore as a uboot app
- uboot should understand which is the active partition - or should
have a mechanism to tell the user which is the active partition
+ LONG TERM goals (strategic and design issues): there is a vendors'
interest in standards process - which the Linux community has not been
extremely involved with in the past. So we should work with the
standards - get familiar with the existing standards
For next week - ALL should download and get familiar with ACPI/UEFI
specs (and open firmware ones - if not already familiar with those).
Let me know if there is something missing or wrong in the minutes, I can
update as indicated.
Best regards,
--
Ilias Biris ilias.biris(a)linaro.org
Project Manager, Linaro
M: +358504839608, IRC: ibiris Skype: ilias_biris
Linaro.org│ Open source software for ARM SoCs
Hi all,
I drafted a quick wikipage to explain how to port EDK2 (UEFI Open Source
implementation) on a new ARM Platform :
http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=ArmPlatformP
kg
I am aware this wikipage could require some EDK2 knowledge but I will try to
fill these gaps in the future by creating or referring to wikipages that
explains some of the key EDK2 concepts.
Feel free to directly send me an email if you want more explanations about a
specific concept. That would help to define priorities.
Olivier
https://wiki.linaro.org/OfficeofCTO/BootArchitecture/2011-09-29
Please note the wiki page for the next meeting is set :
https://wiki.linaro.org/OfficeofCTO/BootArchitecture/2011-10-06
Summary of the action points:
- [CARRIEDOVER] Grant to followup the status of Linaro UEFI membership
- [CARRIEDOVER] David Rusling: - Linaro UEFI membership - target Linaro
Connect
- [CARRIEDOVER] Grant to draft a position on secure boot, from the
Linaro perspective, which can be reviewed by Linaro TSC
- [CARRIEDOVER] <tba> Interact with Microsoft on ARM boot interface -
there is some discussion more to say say by around mid October
- [CARRIEDOVER] Grant: Draft DTB recommended practices and getting the
recommended practices document out and merged into a public tree by
Linaro Connect (actually means the week before - as there are other
events before the Connect) INPROGRESS,
- [CARRIEDOVER] Grant: Select date & time for the next f2f meeting (Next
F2F in ELCE in Prague (OCT 26-28) ?)
Option 1: half-day meeting during ELCE, some folks won't make it - this
is the plan to go for Final confirmation
- [CARRIEDOVER] Will: Define SMP boot requirements - spin tables? Target
Linaro Connect. No updates.
- [ACTION] Olivier to send the wiki link with the documentation on how
to port UEFI to new platforms
- [ACTION] Jean-Christophe to send a RFC to the list regarding the
kernel image format and entry protocol
- [ACTION] Jean-Christophe to send some more details the list regarding
the question : is it possible to put the initrd in the DT directly
(similar to putting some firmware in the DT)? Proposal (JC) is to have 2
device trees, one very minimal with the boot arguments and another with
the HW description.
- [ACTION] Jean-Christophe to put an example of the boot sequence to the
mailing list
Best,
--
Ilias Biris ilias.biris(a)linaro.org
Project Manager, Linaro
M: +358504839608, IRC: ibiris Skype: ilias_biris
Linaro.org│ Open source software for ARM SoCs
Hi folks
Etherpad: http://etherpad.osuosl.org/arm-boot-architecture-meeting-notes
I have updated this etherpad with the action points and agenda for
today. Grant, since you will be unable to join, I hope you could give an
update for the actions under your name, I have grouped the action points
under your name at the top of the AP list.
Agenda for today:
* Action items review
* Status updates on DT and UEFI work
* Implementation on other bootloader than the ARM one
* HW platform status
* Android + UEFI status
Anything else to add?
(PLEASE NOTE: As usual, I will be using the etherpad to update the wiki
meeting minutes which is your best reference location to check what was
discussed during any of the meetings.)
Cheers!
--
Ilias Biris ilias.biris(a)linaro.org
Project Manager, Linaro
M: +358504839608, IRC: ibiris Skype: ilias_biris
Linaro.org│ Open source software for ARM SoCs
Is there already support for UEFI Runtime Services in the kernel? If not is this already planned for Linaro?
UEFI Runtime Services are necessary for exchanging NVRAM values with the UEFI environment. These NVRAM values provide the foundation for UEFI spec'ed functionality ranging from boot entry management to key management for secure boot.
Thanks,
Eugene
https://wiki.linaro.org/OfficeofCTO/BootArchitecture/2011-09-22
Please note the new action points at the bottom of the page. Send your
status updates to the list regarding:
- DT and UEFI work
- Implementation on other bootloader than the ARM one
- HW platform status
In addition there was no time to discuss during the last meeting the
Android + UEFI status. Could someone summarize the status there for
the rest of the list?
Thanks,
*************************************
Ilias Biris,
Aallonkohina 2D 19, 02320 Espoo, Finland
Tel: +358 50 4839608 (mobile)
Email: ilias dot biris at linaro dot org
Skype: ilias_biris
*************************************
Hey
As discussed again in today's call, I've pushed a git mirror of edk2's
and edk2-fatdriver2's SVN modules to git.linaro.org.
This is temporary in that:
* the whole history of edk2-fatdriver2 was imported, but only the last
revision of edk2 was imported (a full import is running, but that
will take a while)
* git.linaro.org lacks git-svn and has outbound traffic firewalled; I'm
working with IS to resolve this
These can be used right now, with the caveats that the branches might
be rebased or might move to another host; I'm happy to assist if you
need help moving your patches around when that happens.
The repos are:
git://git.linaro.org/mirror/edk2/edk2.gitgit://git.linaro.org/mirror/edk2/edk2-fatdriver2.git
These were created with:
git svn clone -s \
https://edk2-fatdriver2.svn.sourceforge.net/svnroot/edk2-fatdriver2
edk2-fatdriver2
git svn clone -r 12354 -s \
https://edk2-fatdriver2.svn.sourceforge.net/svnroot/edk2
edk2
Would you need any other SVN module mirrored, or if you have
suggestions about a different set of git-svn options, please get in
touch with me.
Cheers
--
Loïc Minier
Hi everyone,
I'd like to get the date and time sorted out for the next two boot
architecture face-to-face meetings. For the next one, I propose
scheduling it as a 1/2 day summit during LinuxCon & ELC-E in Prague,
Oct 26-28th, or possibly the day before in parallel with kernel
summit. ELC-E I think is an excellent venue since there will be
representatives from a large number of ARM vendors in attendance, as
well as core Linux developers. I believe we'll be able to get a
larger cross-section of the ecosystem there than will be attending
LInaro Connect the week after in Orlando. Does anybody have any
issues with that date? Is there a specific day that works best? I
haven't talked with the Linux Foundation folks yet or looked at the
schedule, but I'll try to choose a time that doesn't conflict with
related presentations.
For the meeting after that, there are two options; either at Linaro
Connect Q1.12, February 6-10, in San Diego (?), or I *think* ELC the
week after and also in San Diego. I need confirmation from the LF
though about the scheduling. I'm leaning toward ELC for this meeting
also for the same reasons as above, but it might be a good strategy to
alternate between Linaro and non-Linaro gatherings. Thoughts?
g.
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
[sorry if this is the wrong list, please direct me to the right one as needed]
I'm trying to get my head wrapped around FDT to understand how UEFI firmware can produce this (and possibly use it internally) and pass it to the OS.
I've been trying to find the authoritative specification describing DT and FDT. My experience searching resulted in a lot of dead links. Is the spec the ePAPR specification? How does this specification get updated to provide compatibility or enhancements that the current spec does not address like ARM architecture additions?
Also is there a central registry, if any, of strings for vendors or compatible hardware? For example if I have a property 'compatible = "hp,widget123";' who determines whether 'hp' standard for Hewlett-Packard or Henry's Pickles? Along the same lines if there is a standard interface like a "gic" where is the spec/document describing what a "gic" is and how is it updated?
Sorry for the newbie DT questions... I guess I've been spoiled by the UEFI spec providing all the information I've needed in the past in once place. :)
Thanks,
Eugene
