[PATCH 11/13] board: synquacer: Add DeveloperBox 96boards EE support

[Masami Hiramatsu]

Hi Takahiro,

2021年4月14日(水) 13:48 Takahiro Akashi <takahiro.akashi at linaro.org>:
>
> > > So why not define UEFI load options (BOOTxxxx) and use UEFI boot manager
> > > ("bootefi bootmgr")?
> > > That is the way how UEFI (at least boot manager) boots the kernel.
> >
> > Good point! Actually, I'm not sure how to define the BOOTxxxx in
> > config.h (I only
> > know how to include efivars file when build). Could you tell me how to do it?
> > I would like to rewrite the default boot commands.
>
> For example,
> => efidebug boot add 1 USBBOOT usb 0:1 /EFI/BOOT/bootaa64.efi <boot args>
> => efidebug boot add 2 MMCBOOT mmc 0:1 /EFI/BOOT/bootaa64.efi <boot args>
> => efidebug boot order 1 2
> => bootefi bootmgr

Hmm, but this can not be embedded in the build process, can this?

>
> Since "BOOTxxx" are non-volatile variables, we don't have to
> set them again once those commands are run.

What is the default behavior of "bootefi bootmgr" if there is no
BOOTxxxx is set?
If it just do nothing and exit, I think I can add it to the top of
CONFIG_BOOTCOMMAND
so that U-Boot can try it first.
(BOOTxxxx will be set by user after boot)

> But distro_bootcmd can also detect and try to boot "bootaa64.efi" anyway.
> (I'm not sure about the order of devices to detect though.)

Hmm, interesting. OK, I'll try to enable distro_bootcmd.

Thank you,

>
> -Takahiro Akashi
>
> > Thank you,
> >
> > --
> > Masami Hiramatsu



-- 
Masami Hiramatsu