Hello Dan,

that's a really good news because that might make many people's life easier.

Some questions:

1/ is this applicable to all fastboot devices? Of this is requiring a specific firmware? (the underlying question is: is this board specific?)

2/ mkbootimg should be of a specific version or they are all compatible?

3/ the steps are board specific or command to all fastboot ?

Cheers

Le ven. 3 mai 2019 à 03:05, Dan Rue <dan.rue@linaro.org> a écrit :

Hi!

Anibal and I put together a list of steps that can be used to 'fastboot
boot' to a ramdisk or nfs root filesystem in LAVA issue 271[1]. The idea
here is to have LAVA create a boot image at runtime based on a kernel,
kernel modules, optional ramdisk, and a dtb file. Embedded in the boot
image is the kernel command line necessary to boot to a ramdisk or to an
nfs root filesystem. This boot image is then run with 'fastboot boot'
directly - no flashing required.

This is based on discussions related to dragonboard-845 implementation,
and would make such boards compatible with kernelci (for example), but
also simplify kernel test jobs that don't require a system image to be
flashed to the board.

We started to look at what would be needed on the LAVA side to implement
this, but need help defining the semantics and requirements for the LAVA
implementation. I'm also not sure which parts should be in an LXC/docker
type context, and which parts should be directly supported in LAVA. I
can imagine the rest of the semantics will be very similar or the same
to the tftp deploy type.

Feedback and LAVA implementation suggestions welcome. Perhaps this can
be a topic at the next LAVA design meeting (can I get an invite?).

Thanks,
Dan

[1] https://git.lavasoftware.org/lava/lava/issues/271

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