John cabaj/add azure fde cmdline

[john-cabaj]

"azure-fde" will become a standalone kernel, thus command line parameters must be passed to this kernel, along with regular "azure" as well to maintain backward compatibility

Backport from canonical/snapd#14864

[alfonsosanchezbeato]

@john-cabaj which release do you want to backport this, 20 or 22? There are branches for them in core-initrd. Also, you should backport only the commit from canonical/snapd#14864 , nothing else

[john-cabaj]

@john-cabaj which release do you want to backport this, 20 or 22? There are branches for them in core-initrd. Also, you should backport only the commit from canonical/snapd#14864 , nothing else

Yikes, didn’t mean to have all of that get added. I just wanted to get a draft in place while I tested in a PPA. I’ll fix this up once I’ve fully tested before submitting the PR in full. I only need this in core20.

[john-cabaj]

Ok, tests made it further than without the changes. Though now I'm getting:

the-tool[246]: 2026/03/23 21:30:44.575018 secboot_tpm.go:202: cannot open TPM connection: no TPM2 device is available

This works for Jammy, so not sure where the disconnect is.

[john-cabaj]

That may have been a red herring. I passed off a virtual TPM to bypass the issue, and still have:

[    2.575410] the-tool[254]: 2026/03/23 21:58:56.343412 cmd_initramfs_mounts.go:90: snap-bootstrap version 2.68.2+ubuntu20.04.3 starting
[  OK  ] Created slice system-systemd\x2dfsck.slice.
[  OK  ] Listening on fsck to fsckd communication Socket.
         Starting File System Check on /dev/sda15...
[  OK  ] Started File System Check Daemon to report status.
[  OK  ] Finished File System Check on /dev/sda15.
         Mounting /run/mnt/ubuntu-seed...
[  OK  ] Mounted /run/mnt/ubuntu-seed.
         Mounting /sysroot...
         Starting File System Check on /dev/sda1...
[  OK  ] Mounted /sysroot.
[  OK  ] Finished File System Check on /dev/sda1.
         Mounting /run/mnt/data...
[    2.821496] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null). Quota mode: none.

[alfonsosanchezbeato]

LGTM - let me know if you are fine with merging it now

[john-cabaj]

Merging ASAP is great.