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Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel

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On Mon, 2020-12-14 at 05:13 +0900, Ryutaroh Matsumoto wrote:
> > The rpi flavour doesn't have those constraints, though.  What would be
> > the benefit of booting it in UEFI mode?
> 
> Thank you for paying your attention!
> I considered extending autopkgtest-virt-qemu to armel (and other archs) testbeds at
> https://salsa.debian.org/ci-team/autopkgtest/-/merge_requests/100#note_205984
> 
> To boot a qemu disk image by qemu-system-*, a booting firmware seems
> indispensable, as the autopkgtest maintainer does not like giving -kernel=something
> qemu option as
> https://salsa.debian.org/ci-team/autopkgtest/-/merge_requests/97#note_205357

OK, this seems like a good reason.

We used to provide a 'versatile' flavour on armel, for the ARM
Versatile boards that QEMU has supported for a long time.  I removed
this flavour back in 2016 after finding that it had been broken for a
while and no-one had reported it.  Adding that back might be an option,
if the Raspberry Pi device emulation in QEMU is slow.  What do you
think?

> A booting firmware for an armel Debian disk image seems only
> the qemu-efi-arm Debian package (is there anything else??).

The usual practice is to use u-boot or some other board-specific boot
loader, which can be configured by the flash-kernel package.  I don't
think that works in QEMU.

Ben.

> So I resorted to the UEFI booting.
> Currently I proposes to use linux-image-armmp-lpae for armel testbed.

-- 
Ben Hutchings
The two most common things in the universe are hydrogen and stupidity.

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Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-11 11:20 +0100
  Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel Ben Hutchings <ben@decadent.org.uk> - 2020-12-13 18:00 +0100
    Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-13 21:40 +0100
      Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel Ben Hutchings <ben@decadent.org.uk> - 2020-12-13 21:50 +0100
        Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-14 02:30 +0100
          Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel Ben Hutchings <ben@decadent.org.uk> - 2020-12-14 03:10 +0100
            Bug#977126: linux: No armel kernel can be booted by grub-efi-arm:armel Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-14 03:30 +0100
              Bug#977126: linux-image-rpi does not boot by qemu-system-arm -machine raspi0 Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-14 10:10 +0100
                Bug#977126: panic log attached Re: linux-image-rpi does not boot by qemu-system-arm -machine raspi0 Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-14 22:30 +0100
                Bug#977126: panic log attached Re: linux-image-rpi does not boot by qemu-system-arm -machine raspi0 Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-15 08:50 +0100

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