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

[Rob Clark]

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" ;-))

BR,
-R