[U-Boot] efi_loader: efi_runtime_detach()?

[AKASHI Takahiro]

On Fri, May 24, 2019 at 07:27:11AM +0200, Heinrich Schuchardt wrote:
> On 5/22/19 5:15 AM, AKASHI Takahiro wrote:
> > Alex,
> >
> > It seems to me that the current efi_runtime_detach() has
> > two meanings:
> > * changes relating to the transition to virtual address mode
> > * changes relating to exiting boot services
> >
> > In the current implementation, efi_runtime_detach() is
> > called from efi_set_virtual_address_map() as those two
> > purposes are apparently the same.
> > For instance, however, systab.con_in/out/std_err/boottime are set
> > to NULL in exit_boot_services() as well.
> > Logically, efi_get_variable() won't work as U-Boot environment data
> > can be potentially re-used at any time after exit_boot_services().
> > The only meaningful change is to invalidate efi_set_virtual_address_map().
> >
> > So I believe that we should distinguish the two purposes
> > and make appropriate changes in efi_set_virtual_address_map() and
> > and exit_boot_services() respectively.
> >
> > This will be crucial particularly when I will add
> > runtime variable support using "cache".
> >
> > Any thoughts?
> 
> Please, consider this pending patch from Alex:
> https://patchwork.ozlabs.org/patch/1054074/
> efi_loader: Patch non-runtime code out at ExitBootServices already

@Alex, what is the current status of this patch?

> Unfortunately Travis CI is still failing with the patch and QEMU arm64
> does not reboot.

What error did you see?
After what, did qemu arm64 fail to reboot?

-Takahiro Akashi

> Best regards
> 
> Heinrich
> 
> >
> > Thanks,
> > -Takahiro Akashi
> >
>