674 lines
18 KiB
C
674 lines
18 KiB
C
/*
|
|
*
|
|
* Copyright (C) 2008 Advanced Micro Devices, Inc.
|
|
* Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include <keycodes.h>
|
|
#include <libpayload-config.h>
|
|
#include <libpayload.h>
|
|
|
|
#include "i8042.h"
|
|
|
|
#ifdef DEBUG
|
|
#define debug(x...) printf(x)
|
|
#else
|
|
#define debug(x...) do {} while (0)
|
|
#endif
|
|
|
|
#define POWER_BUTTON 0x90
|
|
#define MEDIA_KEY_PREFIX 0xE0
|
|
|
|
struct layout_maps {
|
|
const char *country;
|
|
const unsigned short map[4][0x59];
|
|
};
|
|
|
|
static struct layout_maps *map;
|
|
static int modifier = 0;
|
|
int (*media_key_mapping_callback)(char ch);
|
|
|
|
static struct layout_maps keyboard_layouts[] = {
|
|
#if CONFIG(LP_PC_KEYBOARD_LAYOUT_US)
|
|
{ .country = "us", .map = {
|
|
{ /* No modifier */
|
|
0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
|
|
0x37, 0x38, 0x39, 0x30, 0x2D, 0x3D, 0x08, 0x09,
|
|
0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69,
|
|
0x6F, 0x70, 0x5B, 0x5D, 0x0A, 0x00, 0x61, 0x73,
|
|
0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B,
|
|
0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76,
|
|
0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11),
|
|
KEY_F(12),
|
|
},
|
|
{ /* Shift */
|
|
0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E,
|
|
0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00,
|
|
0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49,
|
|
0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53,
|
|
0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A,
|
|
0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56,
|
|
0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11),
|
|
KEY_F(12),
|
|
},
|
|
{ /* ALT */
|
|
0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
|
|
0x37, 0x38, 0x39, 0x30, 0x2D, 0x3D, 0x08, 0x09,
|
|
0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69,
|
|
0x6F, 0x70, 0x5B, 0x5D, 0x0A, 0x00, 0x61, 0x73,
|
|
0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B,
|
|
0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76,
|
|
0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11),
|
|
KEY_F(12),
|
|
},
|
|
{ /* Shift-ALT */
|
|
0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E,
|
|
0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00,
|
|
0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49,
|
|
0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53,
|
|
0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A,
|
|
0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56,
|
|
0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11),
|
|
KEY_F(12),
|
|
}
|
|
}},
|
|
#endif
|
|
#if CONFIG(LP_PC_KEYBOARD_LAYOUT_DE)
|
|
{ .country = "de", .map = {
|
|
{ /* No modifier */
|
|
0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
|
|
0x37, 0x38, 0x39, 0x30, 0x00, 0x27, 0x08, 0x09,
|
|
0x71, 0x77, 0x65, 0x72, 0x74, 0x7A, 0x75, 0x69,
|
|
0x6F, 0x70, 0x00, 0x2B, 0x0A, 0x00, 0x61, 0x73,
|
|
0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x00,
|
|
0x00, 0x5E, 0x00, 0x23, 0x79, 0x78, 0x63, 0x76,
|
|
0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2D, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x3C, KEY_F(11),
|
|
KEY_F(12),
|
|
},
|
|
{ /* Shift */
|
|
0x00, 0x1B, 0x21, 0x22, 0xA7, 0x24, 0x25, 0x26,
|
|
0x2F, 0x28, 0x29, 0x3D, 0x3F, 0x60, 0x08, 0x00,
|
|
0x51, 0x57, 0x45, 0x52, 0x54, 0x5A, 0x55, 0x49,
|
|
0x4F, 0x50, 0x00, 0x2A, 0x0A, 0x00, 0x41, 0x53,
|
|
0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x00,
|
|
0x00, 0x7E, 0x00, 0x27, 0x59, 0x58, 0x43, 0x56,
|
|
0x42, 0x4E, 0x4D, 0x3B, 0x3A, 0x5F, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x3E, KEY_F(11),
|
|
KEY_F(12),
|
|
},
|
|
{ /* ALT */
|
|
0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
|
|
0x7B, 0x5B, 0x5D, 0x7D, 0x5C, 0x3D, 0x08, 0x09,
|
|
0x40, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69,
|
|
0x6F, 0x70, 0x5B, 0x7E, 0x0A, 0x00, 0x61, 0x73,
|
|
0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B,
|
|
0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76,
|
|
0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x7C, KEY_F(11),
|
|
KEY_F(12),
|
|
},
|
|
{ /* Shift-ALT */
|
|
/* copied from US */
|
|
0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E,
|
|
0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00,
|
|
0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49,
|
|
0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53,
|
|
0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A,
|
|
0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56,
|
|
0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A,
|
|
0x00, 0x20, 0x00, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5),
|
|
KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), 0x00, 0x00, KEY_HOME,
|
|
KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END,
|
|
KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11),
|
|
KEY_F(12),
|
|
}
|
|
}},
|
|
#endif
|
|
};
|
|
|
|
static void keyboard_drain_input(void)
|
|
{
|
|
while (i8042_data_ready_ps2())
|
|
(void)i8042_read_data_ps2();
|
|
}
|
|
|
|
static bool keyboard_cmd(unsigned char cmd)
|
|
{
|
|
const uint64_t timeout_us = cmd == I8042_KBCMD_RESET ? 1*1000*1000 : 200*1000;
|
|
const uint64_t start_time = timer_us(0);
|
|
|
|
i8042_write_data(cmd);
|
|
|
|
do {
|
|
if (!i8042_data_ready_ps2()) {
|
|
udelay(50);
|
|
continue;
|
|
}
|
|
|
|
const uint8_t data = i8042_read_data_ps2();
|
|
switch (data) {
|
|
case 0xfa:
|
|
return true;
|
|
case 0xfe:
|
|
return false;
|
|
default:
|
|
/* Warn only if we already disabled keyboard input. */
|
|
if (cmd != I8042_KBCMD_DEFAULT_DIS)
|
|
debug("WARNING: Keyboard sent spurious 0x%02x.\n", data);
|
|
break;
|
|
}
|
|
} while (timer_us(start_time) < timeout_us);
|
|
|
|
debug("ERROR: Keyboard command timed out.\n");
|
|
return false;
|
|
}
|
|
|
|
static bool set_scancode_set(const unsigned char set)
|
|
{
|
|
bool ret;
|
|
|
|
if (set < 1 || set > 3)
|
|
return false;
|
|
|
|
ret = keyboard_cmd(I8042_KBCMD_SET_SCANCODE);
|
|
if (!ret) {
|
|
debug("ERROR: Keyboard set scancode failed!\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = keyboard_cmd(set);
|
|
if (!ret) {
|
|
debug("ERROR: Keyboard scancode set#%u failed!\n", set);
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static bool keyboard_peek_echo_result(void)
|
|
{
|
|
const uint8_t ch = i8042_peek_data_ps2();
|
|
return ch == 0xee || ch == 0xfe;
|
|
}
|
|
|
|
static enum keyboard_state {
|
|
STATE_INIT = 0,
|
|
STATE_SIMPLIFIED_INIT,
|
|
STATE_HOTPLUG,
|
|
STATE_HOTPLUG_ECHO,
|
|
STATE_DISABLE_SCAN,
|
|
STATE_DRAIN_INPUT,
|
|
STATE_DISABLE_TRANSLATION,
|
|
STATE_START_SELF_TEST,
|
|
STATE_SELF_TEST,
|
|
STATE_CONFIGURE,
|
|
STATE_CONFIGURE_SET1,
|
|
STATE_ENABLE_TRANSLATION,
|
|
STATE_ENABLE_SCAN,
|
|
STATE_RUNNING,
|
|
STATE_RUNNING_ECHO,
|
|
STATE_DETENTION,
|
|
} 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(HOTPLUG),
|
|
STATE_NAMES_ENTRY(HOTPLUG_ECHO),
|
|
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(RUNNING_ECHO),
|
|
STATE_NAMES_ENTRY(DETENTION),
|
|
};
|
|
|
|
__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;
|
|
|
|
static void keyboard_poll(void)
|
|
{
|
|
enum keyboard_state next_state = keyboard_state;
|
|
unsigned int i;
|
|
|
|
switch (keyboard_state) {
|
|
|
|
case STATE_INIT:
|
|
/* Wait until keyboard_init() has been called. */
|
|
break;
|
|
|
|
case STATE_SIMPLIFIED_INIT:
|
|
/* On the first try, start opportunistically, do
|
|
the first steps at once and skip the self-test. */
|
|
(void)keyboard_cmd(I8042_KBCMD_DEFAULT_DIS);
|
|
keyboard_drain_input();
|
|
(void)i8042_set_kbd_translation(false);
|
|
next_state = STATE_CONFIGURE;
|
|
break;
|
|
|
|
case STATE_HOTPLUG:
|
|
if (timer_us(state_time) > 1*1000*1000) {
|
|
i8042_write_data(I8042_KBCMD_ECHO);
|
|
next_state = STATE_HOTPLUG_ECHO;
|
|
}
|
|
break;
|
|
|
|
case STATE_HOTPLUG_ECHO:
|
|
if (!i8042_data_ready_ps2()) {
|
|
if (timer_us(state_time) > 200*1000)
|
|
next_state = STATE_HOTPLUG;
|
|
break;
|
|
}
|
|
|
|
if (keyboard_peek_echo_result()) {
|
|
next_state = STATE_DISABLE_SCAN;
|
|
keyboard_time = timer_us(0);
|
|
}
|
|
(void)i8042_read_data_ps2();
|
|
|
|
break;
|
|
|
|
case STATE_DISABLE_SCAN:
|
|
(void)keyboard_cmd(I8042_KBCMD_DEFAULT_DIS);
|
|
next_state = STATE_DRAIN_INPUT;
|
|
break;
|
|
|
|
case STATE_DRAIN_INPUT:
|
|
/* Limit number of bytes drained per poll. */
|
|
for (i = 0; i < 50 && i8042_data_ready_ps2(); ++i)
|
|
(void)i8042_read_data_ps2();
|
|
if (i == 0)
|
|
next_state = STATE_DISABLE_TRANSLATION;
|
|
break;
|
|
|
|
case STATE_DISABLE_TRANSLATION:
|
|
/* Be opportunistic and assume it's disabled on failure. */
|
|
(void)i8042_set_kbd_translation(false);
|
|
next_state = STATE_START_SELF_TEST;
|
|
break;
|
|
|
|
case STATE_START_SELF_TEST:
|
|
if (!keyboard_cmd(I8042_KBCMD_RESET))
|
|
debug("ERROR: Keyboard self-test couldn't be started.\n");
|
|
/* We ignore errors and always move to the self-test state
|
|
which will simply try again if necessary. */
|
|
next_state = STATE_SELF_TEST;
|
|
break;
|
|
|
|
case STATE_SELF_TEST:
|
|
if (!i8042_data_ready_ps2()) {
|
|
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:
|
|
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:
|
|
debug("WARNING: Keyboard self-test received spurious 0x%02x\n",
|
|
self_test_result);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case STATE_CONFIGURE:
|
|
if (set_scancode_set(2))
|
|
next_state = STATE_ENABLE_TRANSLATION;
|
|
else
|
|
next_state = STATE_CONFIGURE_SET1;
|
|
break;
|
|
|
|
case STATE_CONFIGURE_SET1:
|
|
if (!set_scancode_set(1)) {
|
|
debug("ERROR: Keyboard failed to set any scancode set.\n");
|
|
next_state = STATE_DISABLE_SCAN;
|
|
break;
|
|
}
|
|
|
|
next_state = STATE_ENABLE_SCAN;
|
|
break;
|
|
|
|
case STATE_ENABLE_TRANSLATION:
|
|
if (i8042_set_kbd_translation(true) != 0) {
|
|
debug("ERROR: Keyboard controller set translation failed!\n");
|
|
next_state = STATE_DISABLE_SCAN;
|
|
break;
|
|
}
|
|
|
|
next_state = STATE_ENABLE_SCAN;
|
|
break;
|
|
|
|
case STATE_ENABLE_SCAN:
|
|
if (!keyboard_cmd(I8042_KBCMD_EN)) {
|
|
debug("ERROR: Keyboard enable scanning failed!\n");
|
|
next_state = STATE_DISABLE_SCAN;
|
|
break;
|
|
}
|
|
|
|
next_state = STATE_RUNNING;
|
|
break;
|
|
|
|
case STATE_RUNNING:
|
|
if (!i8042_data_ready_ps2()) {
|
|
if (timer_us(state_time) > 500*1000) {
|
|
i8042_write_data(I8042_KBCMD_ECHO);
|
|
next_state = STATE_RUNNING_ECHO;
|
|
}
|
|
} else {
|
|
state_time = timer_us(0);
|
|
}
|
|
break;
|
|
|
|
case STATE_RUNNING_ECHO:
|
|
if (!i8042_data_ready_ps2()) {
|
|
if (timer_us(state_time) > 200*1000) {
|
|
debug("INFO: Keyboard echo timed out.\n");
|
|
next_state = STATE_HOTPLUG;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (keyboard_peek_echo_result()) {
|
|
(void)i8042_read_data_ps2();
|
|
next_state = STATE_RUNNING;
|
|
}
|
|
|
|
state_time = timer_us(0);
|
|
break;
|
|
|
|
case STATE_DETENTION:
|
|
if (timer_us(state_time) > 5*1000*1000)
|
|
next_state = STATE_HOTPLUG;
|
|
break;
|
|
|
|
}
|
|
|
|
switch (next_state) {
|
|
case STATE_INIT:
|
|
case STATE_HOTPLUG:
|
|
case STATE_HOTPLUG_ECHO:
|
|
case STATE_RUNNING:
|
|
case STATE_RUNNING_ECHO:
|
|
case STATE_DETENTION:
|
|
break;
|
|
default:
|
|
if (timer_us(keyboard_time) > 30*1000*1000)
|
|
next_state = STATE_DETENTION;
|
|
break;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
bool keyboard_havechar(void)
|
|
{
|
|
keyboard_poll();
|
|
return i8042_data_ready_ps2() &&
|
|
(keyboard_state == STATE_RUNNING ||
|
|
(keyboard_state == STATE_RUNNING_ECHO && !keyboard_peek_echo_result()));
|
|
}
|
|
|
|
unsigned char keyboard_get_scancode(void)
|
|
{
|
|
unsigned char ch;
|
|
|
|
while (!keyboard_havechar()) ;
|
|
|
|
ch = i8042_read_data_ps2();
|
|
|
|
switch (ch) {
|
|
case 0x36:
|
|
case 0x2a:
|
|
modifier |= KB_MOD_SHIFT;
|
|
break;
|
|
case 0x80 | 0x36:
|
|
case 0x80 | 0x2a:
|
|
modifier &= ~KB_MOD_SHIFT;
|
|
break;
|
|
case 0x38:
|
|
modifier |= KB_MOD_ALT;
|
|
break;
|
|
case 0x80 | 0x38:
|
|
modifier &= ~KB_MOD_ALT;
|
|
break;
|
|
case 0x1d:
|
|
modifier |= KB_MOD_CTRL;
|
|
break;
|
|
case 0x80 | 0x1d:
|
|
modifier &= ~KB_MOD_CTRL;
|
|
break;
|
|
case 0x3a:
|
|
if (modifier & KB_MOD_CAPSLOCK) {
|
|
modifier &= ~KB_MOD_CAPSLOCK;
|
|
if (keyboard_cmd(I8042_KBCMD_SET_MODE_IND))
|
|
keyboard_cmd(I8042_MODE_CAPS_LOCK_OFF);
|
|
} else {
|
|
modifier |= KB_MOD_CAPSLOCK;
|
|
if (keyboard_cmd(I8042_KBCMD_SET_MODE_IND))
|
|
keyboard_cmd(I8042_MODE_CAPS_LOCK_ON);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return ch;
|
|
}
|
|
|
|
int keyboard_getmodifier(void)
|
|
{
|
|
return modifier;
|
|
}
|
|
|
|
void initialize_keyboard_media_key_mapping_callback(int (*media_key_mapper)(char))
|
|
{
|
|
media_key_mapping_callback = media_key_mapper;
|
|
}
|
|
|
|
int keyboard_getchar(void)
|
|
{
|
|
unsigned char ch;
|
|
int shift;
|
|
int ret = 0;
|
|
|
|
while (!keyboard_havechar()) ;
|
|
|
|
ch = keyboard_get_scancode();
|
|
if ((media_key_mapping_callback != NULL) && (ch == MEDIA_KEY_PREFIX)) {
|
|
ch = keyboard_get_scancode();
|
|
return media_key_mapping_callback(ch);
|
|
}
|
|
|
|
if (!(ch & 0x80) && ch < 0x59) {
|
|
shift =
|
|
(modifier & KB_MOD_SHIFT) ^ (modifier & KB_MOD_CAPSLOCK) ? 1 : 0;
|
|
|
|
if (modifier & KB_MOD_ALT)
|
|
shift += 2;
|
|
|
|
ret = map->map[shift][ch];
|
|
|
|
if (modifier & KB_MOD_CTRL) {
|
|
switch (ret) {
|
|
case 'a' ... 'z':
|
|
ret &= 0x1f;
|
|
break;
|
|
case KEY_DC:
|
|
/* vulcan nerve pinch */
|
|
if ((modifier & KB_MOD_ALT) && reset_handler)
|
|
reset_handler();
|
|
/* fallthrough */
|
|
default:
|
|
ret = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ch == 0x5e)
|
|
ret = POWER_BUTTON;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Set keyboard layout
|
|
* @param country string describing the keyboard layout language.
|
|
* Valid values are "us", "de".
|
|
*/
|
|
|
|
int keyboard_set_layout(char *country)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<ARRAY_SIZE(keyboard_layouts); i++) {
|
|
if (strncmp(keyboard_layouts[i].country, country,
|
|
strlen(keyboard_layouts[i].country)))
|
|
continue;
|
|
|
|
/* Found, changing keyboard layout */
|
|
map = &keyboard_layouts[i];
|
|
return 0;
|
|
}
|
|
|
|
/* Nothing found, not changed */
|
|
return -1;
|
|
}
|
|
|
|
static struct console_input_driver cons = {
|
|
.havekey = (int (*)(void))keyboard_havechar,
|
|
.getchar = keyboard_getchar,
|
|
.input_type = CONSOLE_INPUT_TYPE_EC,
|
|
};
|
|
|
|
void keyboard_init(void)
|
|
{
|
|
if (keyboard_state != STATE_INIT)
|
|
return;
|
|
|
|
map = &keyboard_layouts[0];
|
|
|
|
/* Initialized keyboard controller. */
|
|
if (!i8042_probe() || !i8042_has_ps2())
|
|
return;
|
|
|
|
/* Enable first PS/2 port */
|
|
i8042_cmd(I8042_CMD_EN_KB);
|
|
|
|
keyboard_state = STATE_SIMPLIFIED_INIT;
|
|
keyboard_time = state_time = timer_us(0);
|
|
|
|
console_add_input_driver(&cons);
|
|
}
|
|
|
|
void keyboard_disconnect(void)
|
|
{
|
|
/* If 0x64 returns 0xff, then we have no keyboard
|
|
* controller */
|
|
if (inb(0x64) == 0xFF)
|
|
return;
|
|
|
|
if (!i8042_has_ps2())
|
|
return;
|
|
|
|
/* Disable scanning */
|
|
keyboard_cmd(I8042_KBCMD_DEFAULT_DIS);
|
|
keyboard_drain_input();
|
|
|
|
/* Nobody but us seems to still use scancode set #1.
|
|
So try to hand over with more modern settings. */
|
|
set_scancode_set(2);
|
|
i8042_set_kbd_translation(false);
|
|
|
|
/* Send keyboard disconnect command */
|
|
i8042_cmd(I8042_CMD_DIS_KB);
|
|
|
|
/* Hand off with empty buffer */
|
|
keyboard_drain_input();
|
|
|
|
/* Release keyboard controller driver */
|
|
i8042_close();
|
|
|
|
keyboard_state = STATE_INIT;
|
|
}
|