On Fri, 30 Jun 2023 14:54:48 +0000
Janosch Frank <frankja@xxxxxxxxxxxxx> wrote:
> In contrast to the line-mode console the ASCII console will retain
what's the problem with that?
> previously written text on a reboot. So let's clear the console on
> setup so only our text will be displayed. To not clear the whole
> screen when running under QEMU we switch the run command to the line
> mode console.
>
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
> lib/s390x/sclp-console.c | 2 ++
> s390x/run | 2 +-
> 2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/lib/s390x/sclp-console.c b/lib/s390x/sclp-console.c
> index 384080b0..534d3443 100644
> --- a/lib/s390x/sclp-console.c
> +++ b/lib/s390x/sclp-console.c
> @@ -233,6 +233,8 @@ void sclp_console_setup(void)
> {
> /* We send ASCII and line mode. */
> sclp_write_event_mask(0, SCLP_EVENT_MASK_MSG_ASCII | SCLP_EVENT_MASK_MSG);
> + /* Hard terminal reset to clear screen */
> + sclp_print_ascii("\ec");
> }
>
> void sclp_print(const char *str)
> diff --git a/s390x/run b/s390x/run
> index f1111dbd..68f8e733 100755
> --- a/s390x/run
> +++ b/s390x/run
> @@ -28,7 +28,7 @@ fi
> M='-machine s390-ccw-virtio'
> M+=",accel=$ACCEL"
> command="$qemu -nodefaults -nographic $M"
> -command+=" -chardev stdio,id=con0 -device sclpconsole,chardev=con0"
> +command+=" -chardev stdio,id=con0 -device sclplmconsole,chardev=con0"
> command+=" -kernel"
> command="$(panic_cmd) $(migration_cmd) $(timeout_cmd) $command"
>
