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[console] Centralise handling of key modifiers

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Handle Ctrl and CapsLock key modifiers within key_remap(), to provide
consistent behaviour across different console types.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2022-02-14 16:31:08 +00:00
parent 871dd236d4
commit f2a59d5973
6 changed files with 116 additions and 37 deletions
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21
src/include/ipxe/keymap.h
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@@ -40,9 +40,30 @@ struct keymap {
/** Define a keyboard mapping */
#define __keymap __table_entry ( KEYMAP, 01 )
/** Mappable character mask */
#define KEYMAP_MASK 0xff
/** Pseudo key flag */
#define KEYMAP_PSEUDO 0x80
/** Ctrl key flag */
#define KEYMAP_CTRL 0x0100
/** CapsLock key flag */
#define KEYMAP_CAPSLOCK 0x0200
/** Undo CapsLock key flag
*
* Used when the keyboard driver has already interpreted the CapsLock
* key, in which case the effect needs to be undone before remapping
* in order to correctly handle keyboard mappings that swap alphabetic
* and non-alphabetic keys.
*/
#define KEYMAP_CAPSLOCK_UNDO 0x0400
/** Undo and redo CapsLock key flags */
#define KEYMAP_CAPSLOCK_REDO ( KEYMAP_CAPSLOCK | KEYMAP_CAPSLOCK_UNDO )
extern unsigned int key_remap ( unsigned int character );
#endif /* _IPXE_KEYMAP_H */