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efi_loader: terminal left upper corner is [1, 1]

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For the VT102 and the Linux console the left upper corner is [1, 1].
EFI uses [0, 0] as left upper corner.

Check parameters of the SetCursorPosition() service.

Use CSI H like EDK2 for positioning.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-09-14 18:49:26 +02:00 • committed by Alexander Graf
parent 008fb489fa
commit aaace4b086
1 changed files with 21 additions and 3 deletions
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24
lib/efi_loader/efi_console.c
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@ -359,13 +359,31 @@ static efi_status_t EFIAPI efi_cout_set_cursor_position(
struct efi_simple_text_output_protocol *this,
unsigned long column, unsigned long row)
{
efi_status_t ret = EFI_SUCCESS;
struct simple_text_output_mode *con = &efi_con_mode;
struct cout_mode *mode = &efi_cout_modes[con->mode];
EFI_ENTRY("%p, %ld, %ld", this, column, row);
printf(ESC"[%d;%df", (int)row, (int)column);
/* Check parameters */
if (!this) {
ret = EFI_INVALID_PARAMETER;
goto out;
}
if (row >= mode->rows || column >= mode->columns) {
ret = EFI_UNSUPPORTED;
goto out;
}
/*
* Set cursor position by sending CSI H.
* EFI origin is [0, 0], terminal origin is [1, 1].
*/
printf(ESC "[%d;%dH", (int)row + 1, (int)column + 1);
efi_con_mode.cursor_column = column;
efi_con_mode.cursor_row = row;
return EFI_EXIT(EFI_SUCCESS);
out:
return EFI_EXIT(ret);
}
static efi_status_t EFIAPI efi_cout_enable_cursor(