Hello All,

 

Background::

The armv8 models supports multiple uarts. The primary one being uart0. I believe this is the one which LAVA listens to, to provide the log message when tests are run.

 

Till now uart0 was the serial connection in use. However with our recent changes to the arm trusted firmware we introduced the test secure payload which is a test component in the secure world that is using uart1 for dumping its log info.

 

Issue::

 

I have to test in 2 configuration where

a)      This test secure payload is included

b)      This test secure payload is excluded (which is the default case when using the standard make file flags)

 

For the second config, this are all perfect, no issues.

 

However for the first config when this test secure payload is there that uses uart0, I can see that the kernel does to complete the boot sequence.

When run with the same firmware and the filesystem, it works perfectly OK.

 

The key observation is that lava log output abruptly stops after the file system is mounted and just before we expect messages about udev bindings (in a successful run I see some udev messages and almost immediately the ‘Last login’ message which cue for lava to confirm the boot was successful).

 

There were 2 additional flags which the developer was using in his manual run and I gave that too in the device config, but in vain!

 

bp.pl011_uart0.out_file=-     (when I included this lava started throwing duplicate set of messages in the log! So I removed it later)

bp.pl011_uart1.out_file=tsp.output

 

Attaching the lava log outputs both with and without tsp component as reference.

 

It is clear to me that the images boots successfully, however LAVA seem to lose serial communication in between which makes it impossible to detect the login prompt.

 

Any obvious suspicions on this differing behaviour? Any help much appreciated.

 

Thanks

Basil Eljuse…

 

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