We have foreseen a work around for entering control codes in the EFI_SIMPLE_TEXT_INPUT_PROTOCOL. But currently we have an offset of one.
ESC a should translate to 0x01 (CTRL+a). ESC z should translate to 0x1a (CTRL+z).
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_console.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c index ee84640b7c..ca68c8fc1e 100644 --- a/lib/efi_loader/efi_console.c +++ b/lib/efi_loader/efi_console.c @@ -479,7 +479,12 @@ static efi_status_t efi_cin_read_key(struct efi_input_key *key) pressed_key.scan_code = ch - 'P' + 11; break; case 'a'...'z': - ch = ch - 'a'; + /* + * Workaround for entering CTRL+a (0x01) - CTRL+z (0x1a) + * as escape sequence if the terminal does not allow + * direct entry. These are not Xterm control sequences. + */ + ch = ch - 'a' + 1; break; case '[': ch = getc();