diff options
| -rw-r--r-- | payloads/libpayload/drivers/keyboard.c | 21 | ||||
| -rw-r--r-- | payloads/libpayload/include/libpayload.h | 1 |
2 files changed, 22 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/keyboard.c b/payloads/libpayload/drivers/keyboard.c index e65f08534a..0175bc74d9 100644 --- a/payloads/libpayload/drivers/keyboard.c +++ b/payloads/libpayload/drivers/keyboard.c @@ -31,6 +31,8 @@ #include <libpayload-config.h> #include <libpayload.h> +#define I8042_CMD_DIS_KB 0xad + struct layout_maps { const char *country; const unsigned short map[4][0x57]; @@ -300,3 +302,22 @@ void keyboard_init(void) console_add_input_driver(&cons); } +void keyboard_disconnect(void) +{ + /* If 0x64 returns 0xff, then we have no keyboard + * controller */ + if (inb(0x64) == 0xFF) + return; + + /* Empty keyboard buffer */ + while (keyboard_havechar()) + keyboard_getchar(); + + /* Send keyboard disconnect command */ + outb(I8042_CMD_DIS_KB, 0x64); + keyboard_wait_write(); + + /* Hand off with empty buffer */ + while (keyboard_havechar()) + keyboard_getchar(); +} diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h index 8e03c0b5b5..10a4505c30 100644 --- a/payloads/libpayload/include/libpayload.h +++ b/payloads/libpayload/include/libpayload.h @@ -150,6 +150,7 @@ int add_reset_handler(void (*new_handler)(void)); * @{ */ void keyboard_init(void); +void keyboard_disconnect(void); int keyboard_havechar(void); unsigned char keyboard_get_scancode(void); int keyboard_getchar(void); |