Re: [PATCH v3 0/4] arm64: Add Xen boot support (via fdt)

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

Yes, it happens when booting from grub from UEFI firmware: I tested it
on X-Gene.

Cheers,

Stefano

On Thu, 29 Oct 2015, Fu Wei wrote:
> Hi Stefano,
> 
> I have tried my grub on Foundation model, but I did not get this
> error, I guess that is the UEFI problem ?
> 
> On 1 October 2015 at 00:00, Stefano Stabellini
> <stefano.stabellini@eu.citrix.com> wrote:
> > Hi Fu,
> >
> > I backported your patches to the CentOS aarch64 grub2 rpm.  I am testing
> > it on X-Gene with EFI firmware. It works fine when booting Xen, but
> > booting native kernels (no Xen) doesn't work anymore. Grub prints
> >
> > error: out of memory.
> >
> > Press any key to continue...
> >
> > grub is still able to continue and load Linux, but then the kernel fails
> > to boot with "Cannot open root device", even though the grub config is
> > still same as before and the rootfs (which is xfs) hasn't changed.
> > Reverting the patches solved the problem.
> >
> > Do you have any ideas on what is causing the issue? Maybe the initramfs
> > hasn't been properly loaded?
> >
> >
> > Thanks,
> >
> > Stefano
> >
> >
> > On Tue, 8 Sep 2015, Fu Wei wrote:
> >> Hi Vladimir,
> >>
> >> Do you have any suggestion on this patchset?
> >> Do I need to improve anything?
> >>
> >> Great thanks for your help.
> >>
> >> On 4 August 2015 at 16:34, Fu Wei <fu.wei@linaro.org> wrote:
> >> > Hi Vladimir,
> >> >
> >> > this patchset follows all your comment of v2 patchset.
> >> > Do you have any suggestion on this patchset?
> >> >
> >> > Great thanks for your help.
> >> >
> >> >
> >> > On 23 July 2015 at 13:16,  <fu.wei@linaro.org> wrote:
> >> >> From: Fu Wei <fu.wei@linaro.org>
> >> >>
> >> >>   - This adds support for the Xen boot on ARM specification for arm64.
> >> >>
> >> >>   - Add and export some accessor functions of "loaded" flag and
> >> >>     grub_linux_get_fdt function in include/grub/arm64/linux.h for xen boot.
> >> >>
> >> >>   - Introduce xen_hypervisor, xen_linux, xen_initrd and xen_xsm
> >> >>     to load different binaries for xen boot.
> >> >>     Introduce xen_module to load common or custom module for xen boot.
> >> >>
> >> >>   - This Xen boot support is a separated  module for aarch64,
> >> >>     but reuse the existing code of devicetree in linux module.
> >> >>
> >> >>   - Add the support of xen_hypervisor, xen_linux and xen_initrd
> >> >>     in util/grub.d/20_linux_xen.in
> >> >>
> >> >>   - Add the introduction of all xen boot commands in docs/grub.texi
> >> >>
> >> >>   - The example of this support is <How to boot Xen with GRUB on AArch64 the Foundation FVP model>
> >> >>     https://wiki.linaro.org/LEG/Engineering/Grub2/Xen_booting_on_Foundation_FVP_model_by_GRUB
> >> >>
> >> >> Changelog:
> >> >> v3: create separate module for xen boot: xen_boot
> >> >>     create separate commands for different types of module
> >> >>     delete order-dependent for commands of xen module
> >> >>     simplify the code
> >> >>
> >> >> v2: remove the patches which have been accepted.
> >> >>     according to Vladimir's suggestion, change the command manes
> >> >>     and relevant code:
> >> >>         multiboot-->xen_hypervisor
> >> >>         module-->xen_module
> >> >>     improve the option parsing support for xen_hypervisor/xen_module commands.
> >> >>     add a patch for adding xen_hypervisor/xen_module support
> >> >>     in util/grub.d/20_linux_xen.in.
> >> >>     update docs/grub.texi patch for the new command names.
> >> >>
> >> >> v1: The first version upstream patchset to grub-devel mailing list
> >> >>
> >> >>
> >> >> Fu Wei (4):
> >> >>   arm64: Add and export some accessor functions for xen boot
> >> >>   arm64: Add xen_boot module file
> >> >>   * util/grub.d/20_linux_xen.in: Add support of the XEN boot on aarch64
> >> >>   arm64: Add the introduction of xen boot commands in docs/grub.texi
> >> >>
> >> >>  docs/grub.texi                    |  56 ++++
> >> >>  grub-core/Makefile.core.def       |   7 +
> >> >>  grub-core/loader/arm64/linux.c    |  13 +
> >> >>  grub-core/loader/arm64/xen_boot.c | 685 ++++++++++++++++++++++++++++++++++++++
> >> >>  include/grub/arm64/linux.h        |   6 +-
> >> >>  util/grub.d/20_linux_xen.in       |  16 +-
> >> >>  6 files changed, 779 insertions(+), 4 deletions(-)
> >> >>  create mode 100644 grub-core/loader/arm64/xen_boot.c
> >> >>
> >> >> --
> >> >> 1.8.3.1
> >> >>
> >> >
> >> >
> >> >
> >> > --
> >> > Best regards,
> >> >
> >> > Fu Wei
> >> > Software Engineer
> >> > Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> >> > Ph: +86 21 61221326(direct)
> >> > Ph: +86 186 2020 4684 (mobile)
> >> > Room 1512, Regus One Corporate Avenue,Level 15,
> >> > One Corporate Avenue,222 Hubin Road,Huangpu District,
> >> > Shanghai,China 200021
> >>
> >>
> >>
> >> --
> >> Best regards,
> >>
> >> Fu Wei
> >> Software Engineer
> >> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> >> Ph: +86 21 61221326(direct)
> >> Ph: +86 186 2020 4684 (mobile)
> >> Room 1512, Regus One Corporate Avenue,Level 15,
> >> One Corporate Avenue,222 Hubin Road,Huangpu District,
> >> Shanghai,China 200021
> >>
> 
> 
> 
> -- 
> Best regards,
> 
> Fu Wei
> Software Engineer
> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> Ph: +86 21 61221326(direct)
> Ph: +86 186 2020 4684 (mobile)
> Room 1512, Regus One Corporate Avenue,Level 15,
> One Corporate Avenue,222 Hubin Road,Huangpu District,
> Shanghai,China 200021
>