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