Dear Wolfgang,
On 20/03/2020 11:35, Wolfgang Denk wrote:
Dear Frédéric,
In message <03674974-2a2c-3804-ce02-4f3d38ff0...@collabora.com> you wrote:
I understand what Linus has is one-way, only focussing on crash
dump, i. e. it does not allow to pass information from U-Boot to Linux?
Yes, currently it is not possible to pass information from U-Boot to Linux.
But, PStore does not only store crash dump, but also console, ftrace and
user space logs.
It may be possible to add a "bootloader" storage space to PStore.
This does not make much sense to me. We should not try to push any
possible functionality into U-Boot just because we can.
Yes, I understand it.
But, when debugging kernel crashes occurring either early in boot or
hard crashes later, it can be helpful to be able to retrieve logs using
the U-Boot session.
U-Boot is a boot loader, and should only contain necessary
functionality and things, that are impossible or difficult to solve
in other ways.
I would much rather see the opposite direction working (again):
being able to pass information from U-Boot to Linux kernel and
further into Linux user land in a standard way.
Best regards,
Wolfgang Denk
Best regards,
Frédéric Danis
