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.g...@gmx.de>
---
v2
no change
---
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 dfec95903e..4b97f6ebbc 100644
--- a/lib/efi_loader/efi_console.c
+++ b/lib/efi_loader/efi_console.c
@@ -473,7 +473,12 @@ 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();
--
2.18.0
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