[U-Boot] [PATCH v3 15/21] efi_loader: add bootmgr

[Simon Glass]

Hi,

On 20 September 2017 at 08:09, Rob Clark <robdclark at gmail.com> wrote:
> On Wed, Sep 20, 2017 at 5:08 AM, Alexander Graf <agraf at suse.de> wrote:
>>
>>
>> On 14.09.17 00:05, Rob Clark wrote:
>>>
>>> Similar to a "real" UEFI implementation, the bootmgr looks at the
>>> BootOrder and BootXXXX variables to try to find an EFI payload to load
>>> and boot.  This is added as a sub-command of bootefi.
>>>
>>> The idea is that the distro bootcmd would first try loading a payload
>>> via the bootmgr, and then if that fails (ie. first boot or corrupted
>>> EFI variables) it would fallback to loading bootaa64.efi.  (Which
>>> would then load fallback.efi which would look for \EFI\*\boot.csv and
>>> populate BootOrder and BootXXXX based on what it found.)
>>>
>>> Signed-off-by: Rob Clark <robdclark at gmail.com>
>>
>>
>> Would it make sense to convert the bootmgr into a genuine EFI application
>> now that we have Heinrich's test framework available?
>>
>
> I had considered that, but then decided it was nice to be able to use
> printf()/malloc()/etc.. plus easier to gdb/debug..
>
> Maybe at some point it would be worth trying to fixup edk2 build so
> some things like this and HII/unicode protocols and maybe a few other
> things could be built as standalone .efi drivers and loaded by u-boot.
> (Might make sense by the time someone wants a full blown HII "bios
> setup menu" ;-))

Another advantage of the current approach used by this series is that
we can test it with sandbox. With a separate EFI application we would
lose that ability.

Regards,
Simon