------- Comment From naynj...@ibm.com 2020-04-02 21:53 EDT-------
The kernel seems to be having the secure boot functions after enabling those 
CONFIGs. Now, I was trying to boot to this kernel when secure boot is enabled.

I have taken the key from here -
ppa.launchpad.net/sforshee/lp1866909/ubuntu/dists/focal/main/signed/linux-ppc64el/current/signed.tar.gz

I have taken opal.x509 in the control directory as the key.

The secure boot is enabled "os-secure-enforcing" and .platform has
loaded the key.

# cd /proc/device-tree/ibm,secureboot/
# ls
compatible               ibm,cvc                  phandle
hw-key-hash              name                     secure-enabled
hw-key-hash-size         os-secureboot-enforcing  trusted-enabled
# keyctl show %keyring:.platform
Keyring
337432176 ---lswrv      0     0  keyring: .platform
471022331 ---lswrv      0     0   \_ asymmetric: DB: 
e6b84e62dbbd988abbfda008355aa6a08001c58c

However, it seems the verification is failing as shown below:
# kexec -s /var/petitboot/mnt/dev/sdb6/boot/vmlinux-5.4.0-21-generic
file_load failed: Permission denied

I have two questions:
* I hope the key is right.
* I hope the signature is not stored as detached file because that is how I saw 
it in - 
ppa.launchpad.net/sforshee/lp1866909/ubuntu/dists/focal/main/signed/linux-ppc64el/current/signed.tar.gz.

Please confirm. I will continue to look at it more.

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https://bugs.launchpad.net/bugs/1866909

Title:
  Ubuntu Kernel Support for OpenPOWER NV Secure & Trusted Boot

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