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Viewing changes to term/i386/pc/at_keyboard.c

  • Committer: Bazaar Package Importer
  • Author(s): Robert Millan
  • Date: 2008-01-28 00:01:11 UTC
  • mfrom: (1.1.8 upstream)
  • Revision ID: james.westby@ubuntu.com-20080128000111-qolpe0u4qkf0xccc
Tags: 1.95+20080128-1
http://bugs.debian.org/449135
http://bugs.debian.org/422729
http://bugs.debian.org/462449
* New CVS snapshot.
  - Fixes bogus CLAIM problems on Apple firmware.  (Closes: #449135, #422729)
  - grub-probe performs sanity checks to make sure our filesystem drivers
    are usable.  (Closes: #462449)
  - patches/disable_ata.diff: Remove.  ATA module isn't auto-loaded in
    rescue floppies now.
  - patches/disable_xfs.diff: Remove.  See above (about grub-probe).
* Bring back grub-emu; it can help a lot with debugging feedback.
  - control
  - rules

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term/i386/pc/at_keyboard.c
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/*
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 *  GRUB  --  GRand Unified Bootloader
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 *  Copyright (C) 2007  Free Software Foundation, Inc.
 
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 *  Copyright (C) 2007,2008  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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#define KEYBOARD_REG_DATA       0x60
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#define KEYBOARD_REG_STATUS     0x64
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/* Used for sending commands to the controller.  */
 
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#define KEYBOARD_COMMAND_ISREADY(x)     !((x) & 0x02)
 
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#define KEYBOARD_COMMAND_READ           0x20
 
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#define KEYBOARD_COMMAND_WRITE          0x60
 
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#define KEYBOARD_SCANCODE_SET1          0x40
 
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#define KEYBOARD_ISMAKE(x)      !((x) & 0x80)
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#define KEYBOARD_ISREADY(x)     (((x) & 0x01) == 0)
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#define KEYBOARD_SCANCODE(x)    ((x) & 0x7f)
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  '2', '3',
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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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  while (! KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS)));
 
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  grub_outb (KEYBOARD_COMMAND_WRITE, KEYBOARD_REG_STATUS);
 
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  grub_outb (c, KEYBOARD_REG_DATA);
 
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}
 
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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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  while (! KEYBOARD_COMMAND_ISREADY (grub_inb (KEYBOARD_REG_STATUS)));
 
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  grub_outb (KEYBOARD_COMMAND_READ, KEYBOARD_REG_STATUS);
 
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  return grub_inb (KEYBOARD_REG_DATA);
 
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}
 
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void
 
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grub_keyboard_controller_init (void)
 
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{
 
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  grub_keyboard_controller_write (grub_keyboard_controller_read () | KEYBOARD_SCANCODE_SET1);
 
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}
 
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/* FIXME: This should become an interrupt service routine.  For now
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   it's just used to catch events from control keys.  */
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static void
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          /* Skip grub_dprintf.  */
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          return;
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      }
 
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#ifdef DEBUG_AT_KEYBOARD
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  grub_dprintf ("atkeyb", "Control key 0x%0x was %s\n", key, is_make ? "pressed" : "unpressed");
 
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#endif
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}
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/* If there is a raw key pending, return it; otherwise return -1.  */
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static int
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grub_keyboard_getkey ()
 
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grub_keyboard_getkey (void)
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{
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  grub_uint8_t key;
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  if (KEYBOARD_ISREADY (grub_inb (KEYBOARD_REG_STATUS)))
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/* If there is a character pending, return it; otherwise return -1.  */
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int
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grub_console_checkkey ()
 
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grub_console_checkkey (void)
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{
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  int key;
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  key = grub_keyboard_getkey ();
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  if (key == -1)
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    return -1;
 
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#ifdef DEBUG_AT_KEYBOARD
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  grub_dprintf ("atkeyb", "Detected key 0x%x\n", key);
 
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#endif
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  switch (key)
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    {
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      case CAPS_LOCK:
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          at_keyboard_status &= ~KEYBOARD_STATUS_CAPS_LOCK;
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        else
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          at_keyboard_status |= KEYBOARD_STATUS_CAPS_LOCK;
 
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#ifdef DEBUG_AT_KEYBOARD
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        grub_dprintf ("atkeyb", "caps_lock = %d\n", !!(at_keyboard_status & KEYBOARD_STATUS_CAPS_LOCK));
 
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#endif
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        key = -1;
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        break;
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      default:
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}
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int
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grub_console_getkey ()
 
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grub_console_getkey (void)
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{
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  int key;
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  do