[PATCH v3 1/3] efi_loader: Avoid overwriting previous outputs on console screen clearing

[Simon Glass]

Hi Jan,

On Mon, 7 Nov 2022 at 06:50, Jan Kiszka <jan.kiszka at siemens.com> wrote:
>
> On 04.11.22 20:08, Simon Glass wrote:
> > Hi,
> >
> > On Fri, 4 Nov 2022 at 02:07, Jan Kiszka <jan.kiszka at siemens.com> wrote:
> >>
> >> From: Jan Kiszka <jan.kiszka at siemens.com>
> >>
> >> Before clearing the screen, ensure that no previous output of firmware
> >> or UEFI programs will be overwritten on serial devices or other
> >> streaming consoles. This helps generating complete boot logs.
> >>
> >> Tested regarding multi-output against qemu-x86_defconfig.
> >>
> >> Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
> >> ---
> >>  lib/efi_loader/efi_console.c | 8 +++++++-
> >>  1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > Please see this thread...some things need to be improved in this area.
> >
> > https://patchwork.ozlabs.org/project/uboot/patch/20221022092058.106052-1-heinrich.schuchardt@canonical.com/
> >
>
> Is there a conclusion already? Is there something that I can attach to
> to resolve this issue here?

So far as I am concerned, there is a conclusion :) I provided a lot of
detail in the thread linked above.

We need to fix this properly (by suppressing ANSI output in logs) as
these hacks (and others) are just annoying.

Regards,
SImon