grub/term/usb_keyboard.c

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/* Support for the HID Boot Protocol. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 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/term.h>
#include <grub/time.h>
#include <grub/cpu/io.h>
#include <grub/misc.h>
#include <grub/term.h>
#include <grub/usb.h>
#include <grub/dl.h>
#include <grub/time.h>
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#include <grub/keyboard_layouts.h>
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static grub_uint8_t usb_to_at_map[128] =
{
/* 0x00 */ 0x00, 0x00,
/* 0x02 */ 0x00, 0x00,
/* 0x04 */ 0x1e /* a */, 0x30 /* b */,
/* 0x06 */ 0x2e /* c */, 0x20 /* d */,
/* 0x08 */ 0x12 /* e */, 0x21 /* f */,
/* 0x0a */ 0x22 /* g */, 0x23 /* h */,
/* 0x0c */ 0x17 /* i */, 0x24 /* j */,
/* 0x0e */ 0x25 /* k */, 0x26 /* l */,
/* 0x10 */ 0x32 /* m */, 0x31 /* n */,
/* 0x12 */ 0x18 /* o */, 0x19 /* p */,
/* 0x14 */ 0x10 /* q */, 0x13 /* r */,
/* 0x16 */ 0x1f /* s */, 0x14 /* t */,
/* 0x18 */ 0x16 /* u */, 0x2f /* v */,
/* 0x1a */ 0x11 /* w */, 0x2d /* x */,
/* 0x1c */ 0x15 /* y */, 0x2c /* z */,
/* 0x1e */ 0x02 /* 1 */, 0x03 /* 2 */,
/* 0x20 */ 0x04 /* 3 */, 0x05 /* 4 */,
/* 0x22 */ 0x06 /* 5 */, 0x07 /* 6 */,
/* 0x24 */ 0x08 /* 7 */, 0x09 /* 8 */,
/* 0x26 */ 0x0a /* 9 */, 0x0b /* 0 */,
/* 0x28 */ 0x1c /* Enter */, 0x01 /* Escape */,
/* 0x2a */ 0x0e /* \b */, 0x0f /* \t */,
/* 0x2c */ 0x39 /* Space */, 0x0c /* - */,
/* 0x2e */ 0x0d /* = */, 0x1a /* [ */,
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/* According to usage table 0x31 should be remapped to 0x2b
but testing with real keyboard shows that 0x32 is remapped to 0x2b. */
/* 0x30 */ 0x1b /* ] */, 0x00,
/* 0x32 */ 0x2b /* \ */, 0x27 /* ; */,
/* 0x34 */ 0x28 /* " */, 0x29 /* ` */,
/* 0x36 */ 0x33 /* , */, 0x34 /* . */,
/* 0x38 */ 0x35 /* / */, 0x00,
/* 0x3a */ 0x3b /* F1 */, 0x3c /* F2 */,
/* 0x3c */ 0x3d /* F3 */, 0x3e /* F4 */,
/* 0x3e */ 0x3f /* F5 */, 0x40 /* F6 */,
/* 0x40 */ 0x41 /* F7 */, 0x42 /* F8 */,
/* 0x42 */ 0x43 /* F9 */, 0x44 /* F10 */,
/* 0x44 */ 0x57 /* F11 */, 0x58 /* F12 */,
/* 0x46 */ 0x00, 0x00,
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/* 0x48 */ 0x00, 0x52 /* Insert */,
/* 0x4a */ 0x47 /* HOME */, 0x51 /* PPAGE */,
/* 0x4c */ 0x53 /* DC */, 0x4f /* END */,
/* 0x4e */ 0x49 /* NPAGE */, 0x4d /* RIGHT */,
/* 0x50 */ 0x4b /* LEFT */, 0x50 /* DOWN */,
/* 0x52 */ 0x48 /* UP */, 0x00,
/* 0x54 */ 0x00, 0x00,
/* 0x56 */ 0x00, 0x00,
/* 0x58 */ 0x00, 0x00,
/* 0x5a */ 0x00, 0x00,
/* 0x5c */ 0x00, 0x00,
/* 0x5e */ 0x00, 0x00,
/* 0x60 */ 0x00, 0x00,
/* 0x62 */ 0x00, 0x00,
/* 0x64 */ 0x56 /* 102nd key. */, 0x00,
/* 0x66 */ 0x00, 0x00,
/* 0x68 */ 0x00, 0x00,
/* 0x6a */ 0x00, 0x00,
/* 0x6c */ 0x00, 0x00,
/* 0x6e */ 0x00, 0x00,
/* 0x70 */ 0x00, 0x00,
/* 0x72 */ 0x00, 0x00,
/* 0x74 */ 0x00, 0x00,
/* 0x76 */ 0x00, 0x00,
/* 0x78 */ 0x00, 0x00,
/* 0x7a */ 0x00, 0x00,
/* 0x7c */ 0x00, 0x00,
/* 0x7e */ 0x00, 0x00,
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};
2009-08-28 Colin Watson <cjwatson@ubuntu.com> 2009-08-28 Robert Millan <rmh.grub@aybabtu.com> Add `getkeystatus' terminal method. Add a new `keystatus' command to query it. * include/grub/term.h (GRUB_TERM_STATUS_SHIFT, GRUB_TERM_STATUS_CTRL, GRUB_TERM_STATUS_ALT): Definitions for modifier key bitmasks. (struct grub_term_input): Add `getkeystatus' member. (grub_getkeystatus): Add prototype. * kern/term.c (grub_getkeystatus): New function. * include/grub/i386/pc/memory.h (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR): New macro. (struct grub_machine_bios_data_area): Define necessary parts of BIOS Data Area layout. * term/i386/pc/console.c (grub_console_getkeystatus): New function. (grub_console_term_input): Set `getkeystatus' member. * term/usb_keyboard.c (grub_usb_hid): Macroify HID protocol constants. (grub_usb_keyboard_getreport): Likewise. (grub_usb_keyboard_checkkey): Likewise. (grub_usb_keyboard_getkeystatus): New function. (grub_usb_keyboard_term): Set `getkeystatus' member. * commands/keystatus.c: New file. * conf/common.rmk (pkglib_MODULES): Add keystatus.mod. (keystatus_mod_SOURCES): New variable. (keystatus_mod_CFLAGS): Likewise. (keystatus_mod_LDFLAGS): Likewise. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add commands/keystatus.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/i386-pc.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/sparc64-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * DISTLIST: Add commands/keystatus.c.
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/* Valid values for bRequest. See HID definition version 1.11 section 7.2. */
#define USB_HID_GET_REPORT 0x01
#define USB_HID_GET_IDLE 0x02
#define USB_HID_GET_PROTOCOL 0x03
#define USB_HID_SET_REPORT 0x09
#define USB_HID_SET_IDLE 0x0A
#define USB_HID_SET_PROTOCOL 0x0B
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#define USB_HID_BOOT_SUBCLASS 0x01
#define USB_HID_KBD_PROTOCOL 0x01
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#define GRUB_USB_KEYBOARD_LEFT_CTRL 0x01
#define GRUB_USB_KEYBOARD_LEFT_SHIFT 0x02
#define GRUB_USB_KEYBOARD_LEFT_ALT 0x04
#define GRUB_USB_KEYBOARD_RIGHT_CTRL 0x10
#define GRUB_USB_KEYBOARD_RIGHT_SHIFT 0x20
#define GRUB_USB_KEYBOARD_RIGHT_ALT 0x40
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struct grub_usb_keyboard_data
{
grub_usb_device_t usbdev;
grub_uint8_t status;
int key;
struct grub_usb_desc_endp *endp;
};
static struct grub_term_input grub_usb_keyboards[16];
static int grub_usb_keyboard_checkkey (struct grub_term_input *term);
static int grub_usb_keyboard_getkey (struct grub_term_input *term);
static int grub_usb_keyboard_getkeystatus (struct grub_term_input *term);
static struct grub_term_input grub_usb_keyboard_term =
{
.checkkey = grub_usb_keyboard_checkkey,
.getkey = grub_usb_keyboard_getkey,
.getkeystatus = grub_usb_keyboard_getkeystatus,
.next = 0
};
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static int
interpret_status (grub_uint8_t data0)
{
int mods = 0;
/* Check Shift, Control, and Alt status. */
if (data0 & GRUB_USB_KEYBOARD_LEFT_SHIFT)
mods |= GRUB_TERM_STATUS_LSHIFT;
if (data0 & GRUB_USB_KEYBOARD_RIGHT_SHIFT)
mods |= GRUB_TERM_STATUS_RSHIFT;
if (data0 & GRUB_USB_KEYBOARD_LEFT_CTRL)
mods |= GRUB_TERM_STATUS_LCTRL;
if (data0 & GRUB_USB_KEYBOARD_RIGHT_CTRL)
mods |= GRUB_TERM_STATUS_RCTRL;
if (data0 & GRUB_USB_KEYBOARD_LEFT_ALT)
mods |= GRUB_TERM_STATUS_LALT;
if (data0 & GRUB_USB_KEYBOARD_RIGHT_ALT)
mods |= GRUB_TERM_STATUS_RALT;
return mods;
}
static void
grub_usb_keyboard_detach (grub_usb_device_t usbdev,
int config __attribute__ ((unused)),
int interface __attribute__ ((unused)))
{
unsigned i;
for (i = 0; i < ARRAY_SIZE (grub_usb_keyboards); i++)
{
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struct grub_usb_keyboard_data *data = grub_usb_keyboards[i].data;
if (!data)
continue;
if (data->usbdev != usbdev)
continue;
grub_term_unregister_input (&grub_usb_keyboards[i]);
grub_free ((char *) grub_usb_keyboards[i].name);
grub_usb_keyboards[i].name = NULL;
grub_free (grub_usb_keyboards[i].data);
grub_usb_keyboards[i].data = 0;
}
}
static int
grub_usb_keyboard_attach (grub_usb_device_t usbdev, int configno, int interfno)
{
unsigned curnum;
struct grub_usb_keyboard_data *data;
struct grub_usb_desc_endp *endp = NULL;
int j;
grub_dprintf ("usb_keyboard", "%x %x %x %d %d\n",
usbdev->descdev.class, usbdev->descdev.subclass,
usbdev->descdev.protocol, configno, interfno);
for (curnum = 0; curnum < ARRAY_SIZE (grub_usb_keyboards); curnum++)
if (!grub_usb_keyboards[curnum].data)
break;
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if (curnum == ARRAY_SIZE (grub_usb_keyboards))
return 0;
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if (usbdev->descdev.class != 0
|| usbdev->descdev.subclass != 0 || usbdev->descdev.protocol != 0)
return 0;
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if (usbdev->config[configno].interf[interfno].descif->subclass
!= USB_HID_BOOT_SUBCLASS
|| usbdev->config[configno].interf[interfno].descif->protocol
!= USB_HID_KBD_PROTOCOL)
return 0;
for (j = 0; j < usbdev->config[configno].interf[interfno].descif->endpointcnt;
j++)
{
endp = &usbdev->config[configno].interf[interfno].descendp[j];
if ((endp->endp_addr & 128) && grub_usb_get_ep_type(endp)
== GRUB_USB_EP_INTERRUPT)
break;
}
if (j == usbdev->config[configno].interf[interfno].descif->endpointcnt)
return 0;
grub_dprintf ("usb_keyboard", "HID found!\n");
data = grub_malloc (sizeof (*data));
if (!data)
{
grub_print_error ();
return 0;
}
data->usbdev = usbdev;
data->endp = endp;
/* Place the device in boot mode. */
grub_usb_control_msg (usbdev, GRUB_USB_REQTYPE_CLASS_INTERFACE_OUT,
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USB_HID_SET_PROTOCOL, 0, 0, 0, 0);
/* Reports every time an event occurs and not more often than that. */
grub_usb_control_msg (usbdev, GRUB_USB_REQTYPE_CLASS_INTERFACE_OUT,
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USB_HID_SET_IDLE, 0<<8, 0, 0, 0);
grub_memcpy (&grub_usb_keyboards[curnum], &grub_usb_keyboard_term,
sizeof (grub_usb_keyboards[curnum]));
grub_usb_keyboards[curnum].data = data;
usbdev->config[configno].interf[interfno].detach_hook
= grub_usb_keyboard_detach;
grub_usb_keyboards[curnum].name = grub_xasprintf ("usb_keyboard%d", curnum);
if (!grub_usb_keyboards[curnum].name)
{
grub_print_error ();
return 0;
}
{
grub_uint8_t report[8];
grub_usb_err_t err;
grub_memset (report, 0, sizeof (report));
err = grub_usb_control_msg (usbdev, GRUB_USB_REQTYPE_CLASS_INTERFACE_IN,
USB_HID_GET_REPORT, 0x0000, interfno,
sizeof (report), (char *) report);
if (err)
{
data->status = 0;
data->key = -1;
}
else
{
data->status = report[0];
data->key = report[2] ? : -1;
}
}
grub_term_register_input_active ("usb_keyboard", &grub_usb_keyboards[curnum]);
return 1;
}
static int
grub_usb_keyboard_checkkey (struct grub_term_input *term)
{
grub_uint8_t data[8];
grub_usb_err_t err;
struct grub_usb_keyboard_data *termdata = term->data;
grub_size_t actual;
if (termdata->key != -1)
return termdata->key;
data[2] = 0;
/* Poll interrupt pipe. */
err = grub_usb_bulk_read_extended (termdata->usbdev,
termdata->endp->endp_addr, sizeof (data),
(char *) data, 10, &actual);
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if (err || actual < 1)
return -1;
termdata->status = data[0];
if (actual < 3 || !data[2])
return -1;
grub_dprintf ("usb_keyboard",
"report: 0x%02x 0x%02x 0x%02x 0x%02x"
" 0x%02x 0x%02x 0x%02x 0x%02x\n",
data[0], data[1], data[2], data[3],
data[4], data[5], data[6], data[7]);
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if (usb_to_at_map[data[2]] == 0)
grub_printf ("Unknown key 0x%x detected\n", data[2]);
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else
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termdata->key = grub_term_map_key (usb_to_at_map[data[2]],
interpret_status (data[0]));
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grub_errno = GRUB_ERR_NONE;
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return termdata->key;
}
static int
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grub_usb_keyboard_getkey (struct grub_term_input *term)
{
int ret;
struct grub_usb_keyboard_data *termdata = term->data;
while (termdata->key == -1)
grub_usb_keyboard_checkkey (term);
ret = termdata->key;
termdata->key = -1;
return ret;
}
2009-08-28 Colin Watson <cjwatson@ubuntu.com> 2009-08-28 Robert Millan <rmh.grub@aybabtu.com> Add `getkeystatus' terminal method. Add a new `keystatus' command to query it. * include/grub/term.h (GRUB_TERM_STATUS_SHIFT, GRUB_TERM_STATUS_CTRL, GRUB_TERM_STATUS_ALT): Definitions for modifier key bitmasks. (struct grub_term_input): Add `getkeystatus' member. (grub_getkeystatus): Add prototype. * kern/term.c (grub_getkeystatus): New function. * include/grub/i386/pc/memory.h (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR): New macro. (struct grub_machine_bios_data_area): Define necessary parts of BIOS Data Area layout. * term/i386/pc/console.c (grub_console_getkeystatus): New function. (grub_console_term_input): Set `getkeystatus' member. * term/usb_keyboard.c (grub_usb_hid): Macroify HID protocol constants. (grub_usb_keyboard_getreport): Likewise. (grub_usb_keyboard_checkkey): Likewise. (grub_usb_keyboard_getkeystatus): New function. (grub_usb_keyboard_term): Set `getkeystatus' member. * commands/keystatus.c: New file. * conf/common.rmk (pkglib_MODULES): Add keystatus.mod. (keystatus_mod_SOURCES): New variable. (keystatus_mod_CFLAGS): Likewise. (keystatus_mod_LDFLAGS): Likewise. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add commands/keystatus.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/i386-pc.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/sparc64-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * DISTLIST: Add commands/keystatus.c.
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static int
grub_usb_keyboard_getkeystatus (struct grub_term_input *term)
2009-08-28 Colin Watson <cjwatson@ubuntu.com> 2009-08-28 Robert Millan <rmh.grub@aybabtu.com> Add `getkeystatus' terminal method. Add a new `keystatus' command to query it. * include/grub/term.h (GRUB_TERM_STATUS_SHIFT, GRUB_TERM_STATUS_CTRL, GRUB_TERM_STATUS_ALT): Definitions for modifier key bitmasks. (struct grub_term_input): Add `getkeystatus' member. (grub_getkeystatus): Add prototype. * kern/term.c (grub_getkeystatus): New function. * include/grub/i386/pc/memory.h (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR): New macro. (struct grub_machine_bios_data_area): Define necessary parts of BIOS Data Area layout. * term/i386/pc/console.c (grub_console_getkeystatus): New function. (grub_console_term_input): Set `getkeystatus' member. * term/usb_keyboard.c (grub_usb_hid): Macroify HID protocol constants. (grub_usb_keyboard_getreport): Likewise. (grub_usb_keyboard_checkkey): Likewise. (grub_usb_keyboard_getkeystatus): New function. (grub_usb_keyboard_term): Set `getkeystatus' member. * commands/keystatus.c: New file. * conf/common.rmk (pkglib_MODULES): Add keystatus.mod. (keystatus_mod_SOURCES): New variable. (keystatus_mod_CFLAGS): Likewise. (keystatus_mod_LDFLAGS): Likewise. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add commands/keystatus.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/i386-pc.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/sparc64-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * DISTLIST: Add commands/keystatus.c.
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{
struct grub_usb_keyboard_data *termdata = term->data;
2009-08-28 Colin Watson <cjwatson@ubuntu.com> 2009-08-28 Robert Millan <rmh.grub@aybabtu.com> Add `getkeystatus' terminal method. Add a new `keystatus' command to query it. * include/grub/term.h (GRUB_TERM_STATUS_SHIFT, GRUB_TERM_STATUS_CTRL, GRUB_TERM_STATUS_ALT): Definitions for modifier key bitmasks. (struct grub_term_input): Add `getkeystatus' member. (grub_getkeystatus): Add prototype. * kern/term.c (grub_getkeystatus): New function. * include/grub/i386/pc/memory.h (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR): New macro. (struct grub_machine_bios_data_area): Define necessary parts of BIOS Data Area layout. * term/i386/pc/console.c (grub_console_getkeystatus): New function. (grub_console_term_input): Set `getkeystatus' member. * term/usb_keyboard.c (grub_usb_hid): Macroify HID protocol constants. (grub_usb_keyboard_getreport): Likewise. (grub_usb_keyboard_checkkey): Likewise. (grub_usb_keyboard_getkeystatus): New function. (grub_usb_keyboard_term): Set `getkeystatus' member. * commands/keystatus.c: New file. * conf/common.rmk (pkglib_MODULES): Add keystatus.mod. (keystatus_mod_SOURCES): New variable. (keystatus_mod_CFLAGS): Likewise. (keystatus_mod_LDFLAGS): Likewise. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add commands/keystatus.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/i386-pc.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/sparc64-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * DISTLIST: Add commands/keystatus.c.
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return interpret_status (termdata->status);
2009-08-28 Colin Watson <cjwatson@ubuntu.com> 2009-08-28 Robert Millan <rmh.grub@aybabtu.com> Add `getkeystatus' terminal method. Add a new `keystatus' command to query it. * include/grub/term.h (GRUB_TERM_STATUS_SHIFT, GRUB_TERM_STATUS_CTRL, GRUB_TERM_STATUS_ALT): Definitions for modifier key bitmasks. (struct grub_term_input): Add `getkeystatus' member. (grub_getkeystatus): Add prototype. * kern/term.c (grub_getkeystatus): New function. * include/grub/i386/pc/memory.h (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR): New macro. (struct grub_machine_bios_data_area): Define necessary parts of BIOS Data Area layout. * term/i386/pc/console.c (grub_console_getkeystatus): New function. (grub_console_term_input): Set `getkeystatus' member. * term/usb_keyboard.c (grub_usb_hid): Macroify HID protocol constants. (grub_usb_keyboard_getreport): Likewise. (grub_usb_keyboard_checkkey): Likewise. (grub_usb_keyboard_getkeystatus): New function. (grub_usb_keyboard_term): Set `getkeystatus' member. * commands/keystatus.c: New file. * conf/common.rmk (pkglib_MODULES): Add keystatus.mod. (keystatus_mod_SOURCES): New variable. (keystatus_mod_CFLAGS): Likewise. (keystatus_mod_LDFLAGS): Likewise. * conf/i386-coreboot.rmk (grub_emu_SOURCES): Add commands/keystatus.c. * conf/i386-efi.rmk (grub_emu_SOURCES): Likewise. * conf/i386-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/i386-pc.rmk (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/sparc64-ieee1275.rmk (grub_emu_SOURCES): Likewise. * conf/x86_64-efi.rmk (grub_emu_SOURCES): Likewise. * DISTLIST: Add commands/keystatus.c.
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}
struct grub_usb_attach_desc attach_hook =
{
.class = GRUB_USB_CLASS_HID,
.hook = grub_usb_keyboard_attach
};
GRUB_MOD_INIT(usb_keyboard)
{
grub_usb_register_attach_hook_class (&attach_hook);
}
GRUB_MOD_FINI(usb_keyboard)
{
unsigned i;
for (i = 0; i < ARRAY_SIZE (grub_usb_keyboards); i++)
if (grub_usb_keyboards[i].data)
{
grub_term_unregister_input (&grub_usb_keyboards[i]);
grub_free ((char *) grub_usb_keyboards[i].name);
grub_usb_keyboards[i].name = NULL;
grub_usb_keyboards[i].data = 0;
}
grub_usb_unregister_attach_hook_class (&attach_hook);
}