On 04.11.22 20:08, Simon Glass wrote:
Hi,
On Fri, 4 Nov 2022 at 02:07, Jan Kiszka jan.kiszka@siemens.com wrote:
From: Jan Kiszka jan.kiszka@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@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-hei...
Is there a conclusion already? Is there something that I can attach to to resolve this issue here?
Jan
diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c index 4d08dd3763a..6ce0fcc168d 100644 --- a/lib/efi_loader/efi_console.c +++ b/lib/efi_loader/efi_console.c @@ -461,10 +461,16 @@ static efi_status_t EFIAPI efi_cout_set_attribute( }
/**
- efi_cout_clear_screen() - clear screen
*/
- efi_clear_screen() - clear screen
static void efi_clear_screen(void) {
unsigned int row;/* Avoid overwriting previous outputs on streaming consoles */for (row = 1; row < efi_cout_modes[efi_con_mode.mode].rows; row++)printf("\n");/* * The Linux console wants both a clear and a home command. The video * uclass does not support <ESC>[H without coordinates, yet.-- 2.35.3
Regards, SImon