** Tags removed: foundations-todo
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https://bugs.launchpad.net/bugs/2002226
Title:
Add support for kernels compiled with CONFIG_EFI_ZBOOT
Status in grub2 package in Ubuntu:
Fix Released
Status in grub2-unsigned package in Ubuntu:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in grub2 source package in Focal:
Invalid
Status in grub2-unsigned source package in Focal:
Invalid
Status in linux source package in Focal:
Invalid
Status in grub2 source package in Jammy:
Invalid
Status in grub2-unsigned source package in Jammy:
Invalid
Status in linux source package in Jammy:
Invalid
Status in grub2 source package in Lunar:
Invalid
Status in grub2-unsigned source package in Lunar:
Invalid
Status in linux source package in Lunar:
Invalid
Bug description:
[Impact]
Arm64 kernels compiled with CONFIG_EFI_ZBOOT=y don't use the
ARM64_IMAGE_MAGIC ('ARM\x64') but LINUX_PE_MAGIC (0x818223cd) in the PE Header.
Our GRUB fails to boot such a kernel.
We should eliminate the following check:
grub-core/loader/efi/linux.c:75:
if (lh->magic != GRUB_LINUX_ARCH_MAGIC_SIGNATURE)
return grub_error(GRUB_ERR_BAD_OS, "invalid magic number");
This will allow any EFI binary to be run using the linux command.
[Test plan]
* check that grub and EFI based ARM64 machines boot
* check that MAAS deployment works
[Where problems could occur]
* Non-EFI bootloaders want to boot with regular vmlinuz.gz. If one is using
piboot, u-boot, abootimg likely one still wants to build Image.gz and have
CONFIG_EFI_ZBOOT disabled.
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