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Re: [RFC 1/1] mkimage: revert "Align efi sections on 4k boundary"

From: Julien ROBIN
Subject: Re: [RFC 1/1] mkimage: revert "Align efi sections on 4k boundary"
Date: Fri, 19 Apr 2019 00:02:07 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1

Hi, I don't know if others folks are easily able to test and reproduce the issue and test suggested patch, so I did some builds, and tests based on the EFI file produced by grub-mkstandalone using -O arm-efi : it's a trivial way to test what code version is working or not with qemu-system-arm for example.

Unfortunately, with or without applying the RFC suggested reverting patch, and even with the Grub 2.02 version, using qemu-system-arm and an efi firmware for it, I can't get any efi version of grub working fine on qemu and arm (32 bits) :

I did the comparison by building for

  • --target=arm-linux-gnueabihf, grub-mkstandalone using -O arm-efi (naming the resulting file bootarm.efi)
  • --target=aarch64-linux-gnu, grub-mkstandalone using -O arm64-efi (naming the resulting file bootaa64.efi). I also did make sure that I wasn't mixing wrong files during the process.

I placed more details here  : https://sorel.pixconfig.fr/GRUB/ (commands for having everything build and started, qemu EFI firmwares, resulting files with current grub and 2.02 of 32 and 64 bits) for those who quickly want to do their own tests.

Heinrich, did you succeeded to get an arm-efi version of grub booting on some qemu-system-arm machine ? Are you using another qemu arm efi firmware ? I'm using this one : https://efi.akeo.ie/QEMU_EFI/

Also, debian-9.8.0-armhf-netinst.iso and even debian-10-2019-04-18-JR-armhf-NETINST-1.iso (created using easy-build and a local updated mirror), does not seem to contain any EFI boot loader (Debian for armhf isn't using efi) so I wasn't able to confront any debian armhf efi thing.

Finally, I can confirm the qemu efi arm firmware is working at least enough for having this efi file running : https://github.com/pbatard/uefi-simple but it's probably because the qemu efi arm firmware comes from here ;) so it's not very surprising if it work with it.

If I can help with my time for testing things, feel free to ask me!
Best regards,
Julien ROBIN

On 4/18/19 5:14 PM, Heinrich Schuchardt wrote:
On 4/18/19 12:41 PM, Daniel Kiper wrote:
On Wed, Apr 17, 2019 at 07:50:09AM +0200, Heinrich Schuchardt wrote:
Since this commit a51f953f4ee8 ("mkimage: Align efi sections on 4k
boundary") grubarm.efi crashes. Let's revert it.

Everywhere or on a specific machines?

I observed the issue on a TinkerBoard (Rockchip RK3288 CPU) and on
qemu-arm-system -machine virt with the current Debian Buster GRUB.

Best regards



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