diff options
| -rw-r--r-- | payloads/libpayload/drivers/i8042/keyboard.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/payloads/libpayload/drivers/i8042/keyboard.c b/payloads/libpayload/drivers/i8042/keyboard.c index cb386e919f..91a51bb0ee 100644 --- a/payloads/libpayload/drivers/i8042/keyboard.c +++ b/payloads/libpayload/drivers/i8042/keyboard.c @@ -253,6 +253,31 @@ static enum keyboard_state { STATE_IGNORE, } keyboard_state; +#define STATE_NAMES_ENTRY(name) [STATE_##name] = #name +static const char *const state_names[] = { + STATE_NAMES_ENTRY(INIT), + STATE_NAMES_ENTRY(SIMPLIFIED_INIT), + STATE_NAMES_ENTRY(DISABLE_SCAN), + STATE_NAMES_ENTRY(DRAIN_INPUT), + STATE_NAMES_ENTRY(DISABLE_TRANSLATION), + STATE_NAMES_ENTRY(START_SELF_TEST), + STATE_NAMES_ENTRY(SELF_TEST), + STATE_NAMES_ENTRY(CONFIGURE), + STATE_NAMES_ENTRY(CONFIGURE_SET1), + STATE_NAMES_ENTRY(ENABLE_TRANSLATION), + STATE_NAMES_ENTRY(ENABLE_SCAN), + STATE_NAMES_ENTRY(RUNNING), + STATE_NAMES_ENTRY(IGNORE), +}; + +__attribute__((unused)) +static const char *state_name(enum keyboard_state state) +{ + if (state >= ARRAY_SIZE(state_names) || !state_names[state]) + return "<unknown>"; + return state_names[state]; +} + static uint64_t keyboard_time; static uint64_t state_time; @@ -305,20 +330,23 @@ static void keyboard_poll(void) case STATE_SELF_TEST: if (!i8042_data_ready_ps2()) { - if (timer_us(state_time) > 5*1000*1000) + if (timer_us(state_time) > 5*1000*1000) { + debug("WARNING: Keyboard self-test timed out.\n"); next_state = STATE_DISABLE_SCAN; + } break; } const uint8_t self_test_result = i8042_read_data_ps2(); switch (self_test_result) { case 0xaa: - /* Success! */ + debug("INFO: Keyboard self-test succeeded.\n"); next_state = STATE_CONFIGURE; break; case 0xfc: case 0xfd: /* Failure. Try again. */ + debug("WARNING: Keyboard self-test failed.\n"); next_state = STATE_START_SELF_TEST; break; default: @@ -387,6 +415,7 @@ static void keyboard_poll(void) } if (keyboard_state != next_state) { + debug("INFO: Keyboard advancing state to '%s'.\n", state_name(next_state)); keyboard_state = next_state; state_time = timer_us(0); } |