In the extended text input protocol CTRL-A - CTRL-Z have to be signaled as
Unicode characters a-z or A-Z depending on the shift state and not as 0x01
to 0x1a.
This patch is required for using the EFI shell `edit` command.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
lib/efi_loader/efi_console.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c
index 8e0965bfc89..051fc1d339f 100644
--- a/lib/efi_loader/efi_console.c
+++ b/lib/efi_loader/efi_console.c
@@ -797,9 +797,26 @@ static efi_status_t EFIAPI efi_cin_read_key_stroke_ex(
ret = EFI_NOT_READY;
goto out;
}
+ /*
+ * CTRL+A - CTRL+Z have to be signaled as a - z.
+ * SHIFT+CTRL+A - SHIFT+CTRL+Z have to be signaled as A - Z.
+ */
+ switch (next_key.key.unicode_char) {
+ case 0x01 ... 0x07:
+ case 0x0b ... 0x0c:
+ case 0x0e ... 0x1a:
+ if (!(next_key.key_state.key_toggle_state &
+ EFI_CAPS_LOCK_ACTIVE) ^
+ !(next_key.key_state.key_shift_state &
+ (EFI_LEFT_SHIFT_PRESSED | EFI_RIGHT_SHIFT_PRESSED)))
+ next_key.key.unicode_char += 0x40;
+ else
+ next_key.key.unicode_char += 0x60;
+ }
*key_data = next_key;
key_available = false;
efi_con_in.wait_for_key->is_signaled = false;
+
out:
return EFI_EXIT(ret);
}
--
2.20.1
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