Re: bg_gen_unified_kernel and variable kernelargs

[Jan Kiszka]

On 18.10.23 20:50, Root Mailer wrote:
> Why doesn't bg_gen_unified_kernel take the kernelargs variable?
> Currently I need to know the root=/dev/xxx device when creating the
> unified-kernel.efi, but can't change it dynamically via bg_setenv.

As the command line is under the protection of the UKI signature in case
of secure boot, changing it dynamically does not work. We therefore have
initramfs scripts that select the rootfs, see [1] and [2].

Jan

[1]
https://gitlab.com/cip-project/cip-core/isar-cip-core/-/blob/15d0f975af69903bf18e9930c7e232ca156841b3/recipes-initramfs/initramfs-abrootfs-hook/files/abrootfs.script#L33
[2]
https://gitlab.com/cip-project/cip-core/isar-cip-core/-/blob/15d0f975af69903bf18e9930c7e232ca156841b3/recipes-initramfs/initramfs-verity-hook/files/verity.script.tmpl#L37

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