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grub2/grub-core/term/at_keyboard.c
Andrei Borzenkov c831d2073b at_keyboard: fix numpad "0" and "." mapping 
Reported for set 1 by fgndevelop <fgndevelop@posteo.org>. Apparently
set 2 was reversed too.
2016-07-27 08:33:12 +03:00

696 lines
22 KiB
C
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/dl.h>
#include <grub/at_keyboard.h>
#include <grub/cpu/at_keyboard.h>
#include <grub/cpu/io.h>
#include <grub/misc.h>
#include <grub/term.h>
#include <grub/keyboard_layouts.h>
#include <grub/time.h>
#include <grub/loader.h>
GRUB_MOD_LICENSE ("GPLv3+");
static short at_keyboard_status = 0;
static int e0_received = 0;
static int f0_received = 0;
static grub_uint8_t led_status;
#define KEYBOARD_LED_SCROLL (1 << 0)
#define KEYBOARD_LED_NUM (1 << 1)
#define KEYBOARD_LED_CAPS (1 << 2)
static grub_uint8_t grub_keyboard_controller_orig;
static grub_uint8_t grub_keyboard_orig_set;
static grub_uint8_t current_set;
static void
grub_keyboard_controller_init (void);
static const grub_uint8_t set1_mapping[128] =
{
/* 0x00 */ 0 /* Unused */, GRUB_KEYBOARD_KEY_ESCAPE,
/* 0x02 */ GRUB_KEYBOARD_KEY_1, GRUB_KEYBOARD_KEY_2,
/* 0x04 */ GRUB_KEYBOARD_KEY_3, GRUB_KEYBOARD_KEY_4,
/* 0x06 */ GRUB_KEYBOARD_KEY_5, GRUB_KEYBOARD_KEY_6,
/* 0x08 */ GRUB_KEYBOARD_KEY_7, GRUB_KEYBOARD_KEY_8,
/* 0x0a */ GRUB_KEYBOARD_KEY_9, GRUB_KEYBOARD_KEY_0,
/* 0x0c */ GRUB_KEYBOARD_KEY_DASH, GRUB_KEYBOARD_KEY_EQUAL,
/* 0x0e */ GRUB_KEYBOARD_KEY_BACKSPACE, GRUB_KEYBOARD_KEY_TAB,
/* 0x10 */ GRUB_KEYBOARD_KEY_Q, GRUB_KEYBOARD_KEY_W,
/* 0x12 */ GRUB_KEYBOARD_KEY_E, GRUB_KEYBOARD_KEY_R,
/* 0x14 */ GRUB_KEYBOARD_KEY_T, GRUB_KEYBOARD_KEY_Y,
/* 0x16 */ GRUB_KEYBOARD_KEY_U, GRUB_KEYBOARD_KEY_I,
/* 0x18 */ GRUB_KEYBOARD_KEY_O, GRUB_KEYBOARD_KEY_P,
/* 0x1a */ GRUB_KEYBOARD_KEY_LBRACKET, GRUB_KEYBOARD_KEY_RBRACKET,
/* 0x1c */ GRUB_KEYBOARD_KEY_ENTER, GRUB_KEYBOARD_KEY_LEFT_CTRL,
/* 0x1e */ GRUB_KEYBOARD_KEY_A, GRUB_KEYBOARD_KEY_S,
/* 0x20 */ GRUB_KEYBOARD_KEY_D, GRUB_KEYBOARD_KEY_F,
/* 0x22 */ GRUB_KEYBOARD_KEY_G, GRUB_KEYBOARD_KEY_H,
/* 0x24 */ GRUB_KEYBOARD_KEY_J, GRUB_KEYBOARD_KEY_K,
/* 0x26 */ GRUB_KEYBOARD_KEY_L, GRUB_KEYBOARD_KEY_SEMICOLON,
/* 0x28 */ GRUB_KEYBOARD_KEY_DQUOTE, GRUB_KEYBOARD_KEY_RQUOTE,
/* 0x2a */ GRUB_KEYBOARD_KEY_LEFT_SHIFT, GRUB_KEYBOARD_KEY_BACKSLASH,
/* 0x2c */ GRUB_KEYBOARD_KEY_Z, GRUB_KEYBOARD_KEY_X,
/* 0x2e */ GRUB_KEYBOARD_KEY_C, GRUB_KEYBOARD_KEY_V,
/* 0x30 */ GRUB_KEYBOARD_KEY_B, GRUB_KEYBOARD_KEY_N,
/* 0x32 */ GRUB_KEYBOARD_KEY_M, GRUB_KEYBOARD_KEY_COMMA,
/* 0x34 */ GRUB_KEYBOARD_KEY_DOT, GRUB_KEYBOARD_KEY_SLASH,
/* 0x36 */ GRUB_KEYBOARD_KEY_RIGHT_SHIFT, GRUB_KEYBOARD_KEY_NUMMUL,
/* 0x38 */ GRUB_KEYBOARD_KEY_LEFT_ALT, GRUB_KEYBOARD_KEY_SPACE,
/* 0x3a */ GRUB_KEYBOARD_KEY_CAPS_LOCK, GRUB_KEYBOARD_KEY_F1,
/* 0x3c */ GRUB_KEYBOARD_KEY_F2, GRUB_KEYBOARD_KEY_F3,
/* 0x3e */ GRUB_KEYBOARD_KEY_F4, GRUB_KEYBOARD_KEY_F5,
/* 0x40 */ GRUB_KEYBOARD_KEY_F6, GRUB_KEYBOARD_KEY_F7,
/* 0x42 */ GRUB_KEYBOARD_KEY_F8, GRUB_KEYBOARD_KEY_F9,
/* 0x44 */ GRUB_KEYBOARD_KEY_F10, GRUB_KEYBOARD_KEY_NUM_LOCK,
/* 0x46 */ GRUB_KEYBOARD_KEY_SCROLL_LOCK, GRUB_KEYBOARD_KEY_NUM7,
/* 0x48 */ GRUB_KEYBOARD_KEY_NUM8, GRUB_KEYBOARD_KEY_NUM9,
/* 0x4a */ GRUB_KEYBOARD_KEY_NUMMINUS, GRUB_KEYBOARD_KEY_NUM4,
/* 0x4c */ GRUB_KEYBOARD_KEY_NUM5, GRUB_KEYBOARD_KEY_NUM6,
/* 0x4e */ GRUB_KEYBOARD_KEY_NUMPLUS, GRUB_KEYBOARD_KEY_NUM1,
/* 0x50 */ GRUB_KEYBOARD_KEY_NUM2, GRUB_KEYBOARD_KEY_NUM3,
/* 0x52 */ GRUB_KEYBOARD_KEY_NUM0, GRUB_KEYBOARD_KEY_NUMDOT,
/* 0x54 */ 0, 0,
/* 0x56 */ GRUB_KEYBOARD_KEY_102ND, GRUB_KEYBOARD_KEY_F11,
/* 0x58 */ GRUB_KEYBOARD_KEY_F12, 0,
/* 0x5a */ 0, 0,
/* 0x5c */ 0, 0,
/* 0x5e */ 0, 0,
/* 0x60 */ 0, 0,
/* 0x62 */ 0, 0,
/* OLPC keys. Just mapped to normal keys. */
/* 0x64 */ 0, GRUB_KEYBOARD_KEY_UP,
/* 0x66 */ GRUB_KEYBOARD_KEY_DOWN, GRUB_KEYBOARD_KEY_LEFT,
/* 0x68 */ GRUB_KEYBOARD_KEY_RIGHT, 0,
/* 0x6a */ 0, 0,
/* 0x6c */ 0, 0,
/* 0x6e */ 0, 0,
/* 0x70 */ 0, 0,
/* 0x72 */ 0, GRUB_KEYBOARD_KEY_JP_RO,
/* 0x74 */ 0, 0,
/* 0x76 */ 0, 0,
/* 0x78 */ 0, 0,
/* 0x7a */ 0, 0,
/* 0x7c */ 0, GRUB_KEYBOARD_KEY_JP_YEN,
/* 0x7e */ GRUB_KEYBOARD_KEY_KPCOMMA
};
static const struct
{
grub_uint8_t from, to;
} set1_e0_mapping[] =
{
{0x1c, GRUB_KEYBOARD_KEY_NUMENTER},
{0x1d, GRUB_KEYBOARD_KEY_RIGHT_CTRL},
{0x35, GRUB_KEYBOARD_KEY_NUMSLASH },
{0x38, GRUB_KEYBOARD_KEY_RIGHT_ALT},
{0x47, GRUB_KEYBOARD_KEY_HOME},
{0x48, GRUB_KEYBOARD_KEY_UP},
{0x49, GRUB_KEYBOARD_KEY_PPAGE},
{0x4b, GRUB_KEYBOARD_KEY_LEFT},
{0x4d, GRUB_KEYBOARD_KEY_RIGHT},
{0x4f, GRUB_KEYBOARD_KEY_END},
{0x50, GRUB_KEYBOARD_KEY_DOWN},
{0x51, GRUB_KEYBOARD_KEY_NPAGE},
{0x52, GRUB_KEYBOARD_KEY_INSERT},
{0x53, GRUB_KEYBOARD_KEY_DELETE},
};
static const grub_uint8_t set2_mapping[256] =
{
/* 0x00 */ 0, GRUB_KEYBOARD_KEY_F9,
/* 0x02 */ 0, GRUB_KEYBOARD_KEY_F5,
/* 0x04 */ GRUB_KEYBOARD_KEY_F3, GRUB_KEYBOARD_KEY_F1,
/* 0x06 */ GRUB_KEYBOARD_KEY_F2, GRUB_KEYBOARD_KEY_F12,
/* 0x08 */ 0, GRUB_KEYBOARD_KEY_F10,
/* 0x0a */ GRUB_KEYBOARD_KEY_F8, GRUB_KEYBOARD_KEY_F6,
/* 0x0c */ GRUB_KEYBOARD_KEY_F4, GRUB_KEYBOARD_KEY_TAB,
/* 0x0e */ GRUB_KEYBOARD_KEY_RQUOTE, 0,
/* 0x10 */ 0, GRUB_KEYBOARD_KEY_LEFT_ALT,
/* 0x12 */ GRUB_KEYBOARD_KEY_LEFT_SHIFT, 0,
/* 0x14 */ GRUB_KEYBOARD_KEY_LEFT_CTRL, GRUB_KEYBOARD_KEY_Q,
/* 0x16 */ GRUB_KEYBOARD_KEY_1, 0,
/* 0x18 */ 0, 0,
/* 0x1a */ GRUB_KEYBOARD_KEY_Z, GRUB_KEYBOARD_KEY_S,
/* 0x1c */ GRUB_KEYBOARD_KEY_A, GRUB_KEYBOARD_KEY_W,
/* 0x1e */ GRUB_KEYBOARD_KEY_2, 0,
/* 0x20 */ 0, GRUB_KEYBOARD_KEY_C,
/* 0x22 */ GRUB_KEYBOARD_KEY_X, GRUB_KEYBOARD_KEY_D,
/* 0x24 */ GRUB_KEYBOARD_KEY_E, GRUB_KEYBOARD_KEY_4,
/* 0x26 */ GRUB_KEYBOARD_KEY_3, 0,
/* 0x28 */ 0, GRUB_KEYBOARD_KEY_SPACE,
/* 0x2a */ GRUB_KEYBOARD_KEY_V, GRUB_KEYBOARD_KEY_F,
/* 0x2c */ GRUB_KEYBOARD_KEY_T, GRUB_KEYBOARD_KEY_R,
/* 0x2e */ GRUB_KEYBOARD_KEY_5, 0,
/* 0x30 */ 0, GRUB_KEYBOARD_KEY_N,
/* 0x32 */ GRUB_KEYBOARD_KEY_B, GRUB_KEYBOARD_KEY_H,
/* 0x34 */ GRUB_KEYBOARD_KEY_G, GRUB_KEYBOARD_KEY_Y,
/* 0x36 */ GRUB_KEYBOARD_KEY_6, 0,
/* 0x38 */ 0, 0,
/* 0x3a */ GRUB_KEYBOARD_KEY_M, GRUB_KEYBOARD_KEY_J,
/* 0x3c */ GRUB_KEYBOARD_KEY_U, GRUB_KEYBOARD_KEY_7,
/* 0x3e */ GRUB_KEYBOARD_KEY_8, 0,
/* 0x40 */ 0, GRUB_KEYBOARD_KEY_COMMA,
/* 0x42 */ GRUB_KEYBOARD_KEY_K, GRUB_KEYBOARD_KEY_I,
/* 0x44 */ GRUB_KEYBOARD_KEY_O, GRUB_KEYBOARD_KEY_0,
/* 0x46 */ GRUB_KEYBOARD_KEY_9, 0,
/* 0x48 */ 0, GRUB_KEYBOARD_KEY_DOT,
/* 0x4a */ GRUB_KEYBOARD_KEY_SLASH, GRUB_KEYBOARD_KEY_L,
/* 0x4c */ GRUB_KEYBOARD_KEY_SEMICOLON, GRUB_KEYBOARD_KEY_P,
/* 0x4e */ GRUB_KEYBOARD_KEY_DASH, 0,
/* 0x50 */ 0, GRUB_KEYBOARD_KEY_JP_RO,
/* 0x52 */ GRUB_KEYBOARD_KEY_DQUOTE, 0,
/* 0x54 */ GRUB_KEYBOARD_KEY_LBRACKET, GRUB_KEYBOARD_KEY_EQUAL,
/* 0x56 */ 0, 0,
/* 0x58 */ GRUB_KEYBOARD_KEY_CAPS_LOCK, GRUB_KEYBOARD_KEY_RIGHT_SHIFT,
/* 0x5a */ GRUB_KEYBOARD_KEY_ENTER, GRUB_KEYBOARD_KEY_RBRACKET,
/* 0x5c */ 0, GRUB_KEYBOARD_KEY_BACKSLASH,
/* 0x5e */ 0, 0,
/* 0x60 */ 0, GRUB_KEYBOARD_KEY_102ND,
/* 0x62 */ 0, 0,
/* 0x64 */ 0, 0,
/* 0x66 */ GRUB_KEYBOARD_KEY_BACKSPACE, 0,
/* 0x68 */ 0, GRUB_KEYBOARD_KEY_NUM1,
/* 0x6a */ GRUB_KEYBOARD_KEY_JP_YEN, GRUB_KEYBOARD_KEY_NUM4,
/* 0x6c */ GRUB_KEYBOARD_KEY_NUM7, GRUB_KEYBOARD_KEY_KPCOMMA,
/* 0x6e */ 0, 0,
/* 0x70 */ GRUB_KEYBOARD_KEY_NUM0, GRUB_KEYBOARD_KEY_NUMDOT,
/* 0x72 */ GRUB_KEYBOARD_KEY_NUM2, GRUB_KEYBOARD_KEY_NUM5,
/* 0x74 */ GRUB_KEYBOARD_KEY_NUM6, GRUB_KEYBOARD_KEY_NUM8,
/* 0x76 */ GRUB_KEYBOARD_KEY_ESCAPE, GRUB_KEYBOARD_KEY_NUM_LOCK,
/* 0x78 */ GRUB_KEYBOARD_KEY_F11, GRUB_KEYBOARD_KEY_NUMPLUS,
/* 0x7a */ GRUB_KEYBOARD_KEY_NUM3, GRUB_KEYBOARD_KEY_NUMMINUS,
/* 0x7c */ GRUB_KEYBOARD_KEY_NUMMUL, GRUB_KEYBOARD_KEY_NUM9,
/* 0x7e */ GRUB_KEYBOARD_KEY_SCROLL_LOCK, 0,
/* 0x80 */ 0, 0,
/* 0x82 */ 0, GRUB_KEYBOARD_KEY_F7,
};
static const struct
{
grub_uint8_t from, to;
} set2_e0_mapping[] =
{
{0x11, GRUB_KEYBOARD_KEY_RIGHT_ALT},
{0x14, GRUB_KEYBOARD_KEY_RIGHT_CTRL},
{0x4a, GRUB_KEYBOARD_KEY_NUMSLASH},
{0x5a, GRUB_KEYBOARD_KEY_NUMENTER},
{0x69, GRUB_KEYBOARD_KEY_END},
{0x6b, GRUB_KEYBOARD_KEY_LEFT},
{0x6c, GRUB_KEYBOARD_KEY_HOME},
{0x70, GRUB_KEYBOARD_KEY_INSERT},
{0x71, GRUB_KEYBOARD_KEY_DELETE},
{0x72, GRUB_KEYBOARD_KEY_DOWN},
{0x74, GRUB_KEYBOARD_KEY_RIGHT},
{0x75, GRUB_KEYBOARD_KEY_UP},
{0x7a, GRUB_KEYBOARD_KEY_NPAGE},
{0x7d, GRUB_KEYBOARD_KEY_PPAGE},
};
static int ping_sent;
static void
keyboard_controller_wait_until_ready (void)
{
while (! KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS)));
}
static grub_uint8_t
wait_ack (void)
{
grub_uint64_t endtime;
grub_uint8_t ack;
endtime = grub_get_time_ms () + 20;
do
ack = grub_inb (KEYBOARD_REG_DATA);
while (ack != GRUB_AT_ACK && ack != GRUB_AT_NACK
&& grub_get_time_ms () < endtime);
return ack;
}
static int
at_command (grub_uint8_t data)
{
unsigned i;
for (i = 0; i < GRUB_AT_TRIES; i++)
{
grub_uint8_t ack;
keyboard_controller_wait_until_ready ();
grub_outb (data, KEYBOARD_REG_STATUS);
ack = wait_ack ();
if (ack == GRUB_AT_NACK)
continue;
if (ack == GRUB_AT_ACK)
break;
return 0;
}
return (i != GRUB_AT_TRIES);
}
static void
grub_keyboard_controller_write (grub_uint8_t c)
{
at_command (KEYBOARD_COMMAND_WRITE);
keyboard_controller_wait_until_ready ();
grub_outb (c, KEYBOARD_REG_DATA);
}
#if defined (GRUB_MACHINE_MIPS_LOONGSON) || defined (GRUB_MACHINE_QEMU) || defined (GRUB_MACHINE_COREBOOT) || defined (GRUB_MACHINE_MIPS_QEMU_MIPS)
#define USE_SCANCODE_SET 1
#else
#define USE_SCANCODE_SET 0
#endif
#if !USE_SCANCODE_SET
static grub_uint8_t
grub_keyboard_controller_read (void)
{
at_command (KEYBOARD_COMMAND_READ);
keyboard_controller_wait_until_ready ();
return grub_inb (KEYBOARD_REG_DATA);
}
#endif
static int
write_mode (int mode)
{
unsigned i;
for (i = 0; i < GRUB_AT_TRIES; i++)
{
grub_uint8_t ack;
keyboard_controller_wait_until_ready ();
grub_outb (0xf0, KEYBOARD_REG_DATA);
keyboard_controller_wait_until_ready ();
grub_outb (mode, KEYBOARD_REG_DATA);
keyboard_controller_wait_until_ready ();
ack = wait_ack ();
if (ack == GRUB_AT_NACK)
continue;
if (ack == GRUB_AT_ACK)
break;
return 0;
}
return (i != GRUB_AT_TRIES);
}
static int
query_mode (void)
{
grub_uint8_t ret;
int e;
e = write_mode (0);
if (!e)
return 0;
keyboard_controller_wait_until_ready ();
do
ret = grub_inb (KEYBOARD_REG_DATA);
while (ret == GRUB_AT_ACK);
/* QEMU translates the set even in no-translate mode. */
if (ret == 0x43 || ret == 1)
return 1;
if (ret == 0x41 || ret == 2)
return 2;
if (ret == 0x3f || ret == 3)
return 3;
return 0;
}
static void
set_scancodes (void)
{
/* You must have visited computer museum. Keyboard without scancode set
knowledge. Assume XT. */
if (!grub_keyboard_orig_set)
{
grub_dprintf ("atkeyb", "No sets support assumed\n");
current_set = 1;
return;
}
#if !USE_SCANCODE_SET
current_set = 1;
return;
#else
grub_keyboard_controller_write (grub_keyboard_controller_orig
& ~KEYBOARD_AT_TRANSLATE);
write_mode (2);
current_set = query_mode ();
grub_dprintf ("atkeyb", "returned set %d\n", current_set);
if (current_set == 2)
return;
write_mode (1);
current_set = query_mode ();
grub_dprintf ("atkeyb", "returned set %d\n", current_set);
if (current_set == 1)
return;
grub_dprintf ("atkeyb", "no supported scancode set found\n");
#endif
}
static void
keyboard_controller_led (grub_uint8_t leds)
{
keyboard_controller_wait_until_ready ();
grub_outb (0xed, KEYBOARD_REG_DATA);
keyboard_controller_wait_until_ready ();
grub_outb (leds & 0x7, KEYBOARD_REG_DATA);
}
static int
fetch_key (int *is_break)
{
int was_ext = 0;
grub_uint8_t at_key;
int ret = 0;
if (! KEYBOARD_ISREADY (grub_inb (KEYBOARD_REG_STATUS)))
return -1;
at_key = grub_inb (KEYBOARD_REG_DATA);
/* May happen if no keyboard is connected. Just ignore this. */
if (at_key == 0xff)
return -1;
if (at_key == 0xe0)
{
e0_received = 1;
return -1;
}
if ((current_set == 2 || current_set == 3) && at_key == 0xf0)
{
f0_received = 1;
return -1;
}
/* Setting LEDs may generate ACKs. */
if (at_key == GRUB_AT_ACK)
return -1;
was_ext = e0_received;
e0_received = 0;
switch (current_set)
{
case 1:
*is_break = !!(at_key & 0x80);
if (!was_ext)
ret = set1_mapping[at_key & 0x7f];
else
{
unsigned i;
for (i = 0; i < ARRAY_SIZE (set1_e0_mapping); i++)
if (set1_e0_mapping[i].from == (at_key & 0x7f))
{
ret = set1_e0_mapping[i].to;
break;
}
}
break;
case 2:
*is_break = f0_received;
f0_received = 0;
if (!was_ext)
ret = set2_mapping[at_key];
else
{
unsigned i;
for (i = 0; i < ARRAY_SIZE (set2_e0_mapping); i++)
if (set2_e0_mapping[i].from == at_key)
{
ret = set2_e0_mapping[i].to;
break;
}
}
break;
default:
return -1;
}
if (!ret)
{
if (was_ext)
grub_dprintf ("atkeyb", "Unknown key 0xe0+0x%02x from set %d\n",
at_key, current_set);
else
grub_dprintf ("atkeyb", "Unknown key 0x%02x from set %d\n",
at_key, current_set);
return -1;
}
return ret;
}
/* FIXME: This should become an interrupt service routine. For now
it's just used to catch events from control keys. */
static int
grub_keyboard_isr (grub_keyboard_key_t key, int is_break)
{
if (!is_break)
switch (key)
{
case GRUB_KEYBOARD_KEY_LEFT_SHIFT:
at_keyboard_status |= GRUB_TERM_STATUS_LSHIFT;
return 1;
case GRUB_KEYBOARD_KEY_RIGHT_SHIFT:
at_keyboard_status |= GRUB_TERM_STATUS_RSHIFT;
return 1;
case GRUB_KEYBOARD_KEY_LEFT_CTRL:
at_keyboard_status |= GRUB_TERM_STATUS_LCTRL;
return 1;
case GRUB_KEYBOARD_KEY_RIGHT_CTRL:
at_keyboard_status |= GRUB_TERM_STATUS_RCTRL;
return 1;
case GRUB_KEYBOARD_KEY_RIGHT_ALT:
at_keyboard_status |= GRUB_TERM_STATUS_RALT;
return 1;
case GRUB_KEYBOARD_KEY_LEFT_ALT:
at_keyboard_status |= GRUB_TERM_STATUS_LALT;
return 1;
default:
return 0;
}
else
switch (key)
{
case GRUB_KEYBOARD_KEY_LEFT_SHIFT:
at_keyboard_status &= ~GRUB_TERM_STATUS_LSHIFT;
return 1;
case GRUB_KEYBOARD_KEY_RIGHT_SHIFT:
at_keyboard_status &= ~GRUB_TERM_STATUS_RSHIFT;
return 1;
case GRUB_KEYBOARD_KEY_LEFT_CTRL:
at_keyboard_status &= ~GRUB_TERM_STATUS_LCTRL;
return 1;
case GRUB_KEYBOARD_KEY_RIGHT_CTRL:
at_keyboard_status &= ~GRUB_TERM_STATUS_RCTRL;
return 1;
case GRUB_KEYBOARD_KEY_RIGHT_ALT:
at_keyboard_status &= ~GRUB_TERM_STATUS_RALT;
return 1;
case GRUB_KEYBOARD_KEY_LEFT_ALT:
at_keyboard_status &= ~GRUB_TERM_STATUS_LALT;
return 1;
default:
return 0;
}
}
/* If there is a raw key pending, return it; otherwise return -1. */
static int
grub_keyboard_getkey (void)
{
int key;
int is_break = 0;
key = fetch_key (&is_break);
if (key == -1)
return -1;
if (grub_keyboard_isr (key, is_break))
return -1;
if (is_break)
return -1;
return key;
}
int
grub_at_keyboard_is_alive (void)
{
if (current_set != 0)
return 1;
if (ping_sent
&& KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS))
&& grub_inb (KEYBOARD_REG_DATA) == 0x55)
{
grub_keyboard_controller_init ();
return 1;
}
if (KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS)))
{
grub_outb (0xaa, KEYBOARD_REG_STATUS);
ping_sent = 1;
}
return 0;
}
/* If there is a character pending, return it;
otherwise return GRUB_TERM_NO_KEY. */
static int
grub_at_keyboard_getkey (struct grub_term_input *term __attribute__ ((unused)))
{
int code;
if (!grub_at_keyboard_is_alive ())
return GRUB_TERM_NO_KEY;
code = grub_keyboard_getkey ();
if (code == -1)
return GRUB_TERM_NO_KEY;
#ifdef DEBUG_AT_KEYBOARD
grub_dprintf ("atkeyb", "Detected key 0x%x\n", code);
#endif
switch (code)
{
case GRUB_KEYBOARD_KEY_CAPS_LOCK:
at_keyboard_status ^= GRUB_TERM_STATUS_CAPS;
led_status ^= KEYBOARD_LED_CAPS;
keyboard_controller_led (led_status);
#ifdef DEBUG_AT_KEYBOARD
grub_dprintf ("atkeyb", "caps_lock = %d\n", !!(at_keyboard_status & GRUB_KEYBOARD_STATUS_CAPS_LOCK));
#endif
return GRUB_TERM_NO_KEY;
case GRUB_KEYBOARD_KEY_NUM_LOCK:
at_keyboard_status ^= GRUB_TERM_STATUS_NUM;
led_status ^= KEYBOARD_LED_NUM;
keyboard_controller_led (led_status);
#ifdef DEBUG_AT_KEYBOARD
grub_dprintf ("atkeyb", "num_lock = %d\n", !!(at_keyboard_status & GRUB_KEYBOARD_STATUS_NUM_LOCK));
#endif
return GRUB_TERM_NO_KEY;
case GRUB_KEYBOARD_KEY_SCROLL_LOCK:
at_keyboard_status ^= GRUB_TERM_STATUS_SCROLL;
led_status ^= KEYBOARD_LED_SCROLL;
keyboard_controller_led (led_status);
return GRUB_TERM_NO_KEY;
default:
return grub_term_map_key (code, at_keyboard_status);
}
}
static void
grub_keyboard_controller_init (void)
{
at_keyboard_status = 0;
/* Drain input buffer. */
while (1)
{
keyboard_controller_wait_until_ready ();
if (! KEYBOARD_ISREADY (grub_inb (KEYBOARD_REG_STATUS)))
break;
keyboard_controller_wait_until_ready ();
grub_inb (KEYBOARD_REG_DATA);
}
#if defined (GRUB_MACHINE_MIPS_LOONGSON) || defined (GRUB_MACHINE_MIPS_QEMU_MIPS)
grub_keyboard_controller_orig = 0;
grub_keyboard_orig_set = 2;
#elif defined (GRUB_MACHINE_QEMU) || defined (GRUB_MACHINE_COREBOOT)
/* *BSD relies on those settings. */
grub_keyboard_controller_orig = KEYBOARD_AT_TRANSLATE;
grub_keyboard_orig_set = 2;
#else
grub_keyboard_controller_orig = grub_keyboard_controller_read ();
grub_keyboard_orig_set = query_mode ();
#endif
set_scancodes ();
keyboard_controller_led (led_status);
}
static grub_err_t
grub_keyboard_controller_fini (struct grub_term_input *term __attribute__ ((unused)))
{
if (current_set == 0)
return GRUB_ERR_NONE;
if (grub_keyboard_orig_set)
write_mode (grub_keyboard_orig_set);
grub_keyboard_controller_write (grub_keyboard_controller_orig);
return GRUB_ERR_NONE;
}
static grub_err_t
grub_at_fini_hw (int noreturn __attribute__ ((unused)))
{
return grub_keyboard_controller_fini (NULL);
}
static grub_err_t
grub_at_restore_hw (void)
{
if (current_set == 0)
return GRUB_ERR_NONE;
/* Drain input buffer. */
while (1)
{
keyboard_controller_wait_until_ready ();
if (! KEYBOARD_ISREADY (grub_inb (KEYBOARD_REG_STATUS)))
break;
keyboard_controller_wait_until_ready ();
grub_inb (KEYBOARD_REG_DATA);
}
set_scancodes ();
keyboard_controller_led (led_status);
return GRUB_ERR_NONE;
}
static struct grub_term_input grub_at_keyboard_term =
{
.name = "at_keyboard",
.fini = grub_keyboard_controller_fini,
.getkey = grub_at_keyboard_getkey
};
GRUB_MOD_INIT(at_keyboard)
{
grub_term_register_input ("at_keyboard", &grub_at_keyboard_term);
grub_loader_register_preboot_hook (grub_at_fini_hw, grub_at_restore_hw,
GRUB_LOADER_PREBOOT_HOOK_PRIO_CONSOLE);
}
GRUB_MOD_FINI(at_keyboard)
{
grub_keyboard_controller_fini (NULL);
grub_term_unregister_input (&grub_at_keyboard_term);
}
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