------- Comment From mauri...@br.ibm.com 2018-04-26 13:57 EDT-------
The skiroot kernel build is available at:
http://dorno.rch.stglabs.ibm.com/~mauricfo/kernel/skiroot/bz166588/zImage.epapr_4.15.14-openpower1.bz166588c132

(In reply to comment #200)
> Dwip and I talked, and we don't feel there is anything new to be learned by
> changing focus to petitboot right now. [...]

Since the build was already in progress, I'll post it here, just in case
it might still help.

You can flash it as described in bug 167103 comment 22
on systems with secure-boot _disabled_ (bug bug 167103 comment 30),
i.e., there is no 'secure-enabled' property in device tree.

Copying the instructions here for reference:

# ls /proc/device-tree/ibm,secureboot/secure-enabled
ls: cannot access '/proc/device-tree/ibm,secureboot/secure-enabled': No such 
file or directory

# lsprop /proc/device-tree/ibm,secureboot/
compatible       "ibm,secureboot-v2"
hw-key-hash-size 00000040 (64)
hw-key-hash      40d487ff 7380ed6a d54775d5 795fea0d
e2f541fe a9db06b8 466a42a3 20e65f75
b4866546 0017d907 515dc2a5 f9fc5095
4d6ee0c9 b67d219d fb708535 1d01d6d1
phandle          00000086 (134)
name             "ibm,secureboot"

On Petitboot:

/ # uname -r
4.13.16-openpower1

/ # wget -O zImage.epapr
http://dorno.rch.stglabs.ibm.com/~mauricfo/kernel/skiroot/bz166588/zImage.epapr_4.15.14-openpower1.bz166588c132

/ # pflash -e -p zImage.epapr -P BOOTKERNEL
About to erase 0x017e1000..0x02ca5478 !
WARNING ! This will modify your HOST flash chip content !
Enter "yes" to confirm:yes
<...>

/ # reboot
<...>

EXPECTED:
/ # uname -r
4.15.14-openpower1.bz166588c132

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1762844

Title:
  ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3: Host crashed & enters into
  xmon after moving to 4.15.0-15.16 kernel

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