[U-Boot] Use of QEMU UEFI payland with persistent environment
Hello everyone,
We are trying to automate some tests and one of the parts of the project requires the use of persistent environment.
Due performance advantages we would like to use x86 with KVM to execute the tests however after booting QEMU with the UEFI payload it turns out the environment cannot be saved. Did someone ever made it work?
Hi Otavio,
On 8 December 2016 at 10:39, Otavio Salvador otavio.salvador@ossystems.com.br wrote:
Hello everyone,
We are trying to automate some tests and one of the parts of the project requires the use of persistent environment.
Due performance advantages we would like to use x86 with KVM to execute the tests however after booting QEMU with the UEFI payload it turns out the environment cannot be saved. Did someone ever made it work?
Do you expect it to save to SPI flash? If so, does QEMU provide a way to emulate that in a persistent file, or similar?
Regards, Simon
On Thu, Dec 8, 2016 at 4:55 PM, Simon Glass sjg@chromium.org wrote:
Hi Otavio,
On 8 December 2016 at 10:39, Otavio Salvador otavio.salvador@ossystems.com.br wrote:
Hello everyone,
We are trying to automate some tests and one of the parts of the project requires the use of persistent environment.
Due performance advantages we would like to use x86 with KVM to execute the tests however after booting QEMU with the UEFI payload it turns out the environment cannot be saved. Did someone ever made it work?
Do you expect it to save to SPI flash? If so, does QEMU provide a way to emulate that in a persistent file, or similar?
The SPI flash would be ideal as we could keep it for reuse.
It seems we can pass a file with:
-drive if=pflash,format=raw,<file>
But I did not find how to make it writable and make U-Boot to use it.
Hi Otavio,
On 8 December 2016 at 14:03, Otavio Salvador otavio.salvador@ossystems.com.br wrote:
On Thu, Dec 8, 2016 at 4:55 PM, Simon Glass sjg@chromium.org wrote:
Hi Otavio,
On 8 December 2016 at 10:39, Otavio Salvador otavio.salvador@ossystems.com.br wrote:
Hello everyone,
We are trying to automate some tests and one of the parts of the project requires the use of persistent environment.
Due performance advantages we would like to use x86 with KVM to execute the tests however after booting QEMU with the UEFI payload it turns out the environment cannot be saved. Did someone ever made it work?
Do you expect it to save to SPI flash? If so, does QEMU provide a way to emulate that in a persistent file, or similar?
The SPI flash would be ideal as we could keep it for reuse.
It seems we can pass a file with:
-drive if=pflash,format=raw,<file>
But I did not find how to make it writable and make U-Boot to use it.
As an example, chromebook_link enables the SPI environment, so you could copy the ENV_IS_IN_SPI_FLASH, etc. options from there.
To save it, 'saveenv' should work.
- Simon
participants (2)
-
Otavio Salvador -
Simon Glass