Re: [OE-core] [PATCH v4 1/9] poky-altcfg.conf: enable "efi" in DISTRO_FEATURES

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Tue, 2025-04-22 at 17:34 +0300, Mikko Rapeli via lists.openembedded.org wrote:
> oe-core machines like genericarm64 already enable "efi" in
> MACHINE_FEATURES but this does not enable systemd side
> "efi" support and thus systemd does not mount ESP
> partition for example.
> 
> Enabling "efi" in systemd PACKAGECONFIG got negative comments
> in review. Also enabling systemd "efi" support via MACHINE_FEATURES
> was rejected. Thus enabling this as distro feature for "poky-altcfg".
> 
> Many HW targets come with UEFI compatible firmware by default.
> For example u-boot enables UEFI support by default on all targets.
> 
> This enables seeing UEFI firmware interfaces and data
> in userspace since "efivars" is now mounted by systemd
> to /sys/firmware/efi/efivars. Things like UEFI bootloader
> (grub, systemd-boot etc) selections and secure boot status
> can be queried from there.
> 
> Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
> ---
>  meta-poky/conf/distro/poky-altcfg.conf | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/meta-poky/conf/distro/poky-altcfg.conf b/meta-poky/conf/distro/poky-altcfg.conf
> index 3d64bdd1fe..e56c4f0a37 100644
> --- a/meta-poky/conf/distro/poky-altcfg.conf
> +++ b/meta-poky/conf/distro/poky-altcfg.conf
> @@ -14,4 +14,7 @@ POKY_INIT_MANAGER:poky-altcfg = "systemd"
>  # systemd isn't suitable with musl
>  POKY_INIT_MANAGER:poky-altcfg:libc-musl = "sysvinit"
>  
> +# for systemd etc UEFI support
> +DISTRO_FEATURES:append = " efi"
> +
>  require conf/distro/include/poky-distro-alt-test-config.inc

Having thought a bit about this, I think we should just add this by
default to nodistro. I'm trying to keep the delta between poky and
nodistro minimal if/where we can.

Cheers,

Richard