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