Dear Frédéric,
In message 03674974-2a2c-3804-ce02-4f3d38ff01d9@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.
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