distro_boot vs. env-based bootmenu

AKASHI Takahiro takahiro.akashi at linaro.org
Sat Jul 1 04:08:01 CEST 2023


On Wed, Apr 12, 2023 at 11:22:23AM +0200, Frank Wunderlich wrote:
> Hi,
> i try to move from distro-boot (extlinux-config files) to an env-based bootmenu (builtin-environment) for
> my bananapi r2pro.
> basicly it works, but i see more bootmenu-entries than i have defined in my environment
>  *** U-Boot Boot Menu ***
>       1. Boot from SD/EMMC.
>       mmc 1:2
>       mmc 1:3
>       mmc 1:4
>       U-Boot consoleHit any key to stop autoboot: 2
> i have only defined one botmenu-entry (first one in uEnv_r2pro.txt)
> bootmenu_0=1. Boot from SD/EMMC.=run newboot
> bootmenu_default=0
> i guess the 3 mmc 1:x entries are part from distro-boot. i see a series from simon where he drops
> distroboot for rockchip-boards.

Probably they came from UEFI's removable media support, specifically
    commit c606c0059f7f
    Author: Masahisa Kojima <masahisa.kojima at linaro.org>
    Date:   Thu Apr 28 17:09:42 2022 +0900

        bootmenu: add UEFI boot entry into bootmenu

> https://patchwork.ozlabs.org/project/uboot/patch/20230409084454.v9.8.I4cf7708a1ba953b9abd81375d93af34665c7b251@changeid/
> can anyone explain me where i can disable the mmc 1:x entries? i wanted to leave distro_boot as
> fallback but it seems this is not possible.

even CONFIG_EFI_LOADER if you don't need UEFI subsystem at all.

-Takahiro Akashi

> maybe i have to disable these?
> can i keep distro-boot (seems to works with env too, but overridden by my builtin env) somehow and drop the mmc-entries from my bootmenu?
> any idea why i have no linebreak after u-Boot console?
> i use u-boot 2023.04 my source for this conversion/tests is there:
> https://github.com/frank-w/u-boot/tree/2023-04-bpi-r2pro
> using modified configs/evb-rk3568_defconfig
> regards Frank

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