Hi Shantur
On Fri, 24 Nov 2023 at 18:51, Shantur Rathore i@shantur.com wrote:
Hi Heinrich,
I am trying to work out how to enable the SetVariableRT service in U-Boot and came across your patch [1] which initially had the SetVariable RT service enabled in EFI but in the final patch this was removed. I am hoping to implement it on top of the SPI Flash EFI store [2] to be able to set Boot order and boot items from Linux the UEFI way.
Can I pick your brain on why it was dropped in the patch? Is there any limitation in SetVariableRT service ?
I recently had a talk about it in Plumbers [0]. Generally speaking, RT + hardware owned by the kernel is a very weird combination since you can't guarantee exclusive access to the flash or the bus and you have to preserve a *lot* of code alive in u-boot.
I'll respond to your v1 patchset and we can discuss details there as well.
[0] https://lpc.events/event/17/contributions/1653/
Cheers /Ilias
Kind regards, Shantur
[1] : https://patches.linaro.org/project/u-boot/patch/20200331060541.4212-1-xypron... [2] : https://patchwork.ozlabs.org/project/uboot/list/?series=383699