grub/commands/efi/loadbios.c

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/* loadbios.c - command to load a bios dump */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 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/misc.h>
#include <grub/file.h>
#include <grub/efi/efi.h>
#include <grub/pci.h>
#include <grub/command.h>
static grub_efi_guid_t acpi_guid = GRUB_EFI_ACPI_TABLE_GUID;
static grub_efi_guid_t acpi2_guid = GRUB_EFI_ACPI_20_TABLE_GUID;
static grub_efi_guid_t smbios_guid = GRUB_EFI_SMBIOS_TABLE_GUID;
#define EBDA_SEG_ADDR 0x40e
#define LOW_MEM_ADDR 0x413
#define FAKE_EBDA_SEG 0x9fc0
#define BLANK_MEM 0xffffffff
#define VBIOS_ADDR 0xc0000
#define SBIOS_ADDR 0xf0000
static int
enable_rom_area (void)
{
grub_pci_address_t addr;
grub_uint32_t *rom_ptr;
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grub_pci_device_t dev = { .bus = 0, .device = 0, .function = 0};
rom_ptr = (grub_uint32_t *) VBIOS_ADDR;
if (*rom_ptr != BLANK_MEM)
{
2009-12-21 Carles Pina i Estany <carles@pina.cat> * commands/acpi.c (options): Fix capitalizations and/or full stops. (GRUB_MOD_INIT): Likewise. * commands/boot.c (GRUB_MOD_INIT): Likewise. * commands/cmp.c (grub_cmd_cmp): Likewise. * commands/echo.c (options): Likewise. * commands/efi/loadbios.c (enable_rom_area): Likewise. (enable_rom_area): Likewise. (GRUB_MOD_INIT): Likewise. * commands/gptsync.c (GRUB_MOD_INIT): Likewise. * commands/halt.c (GRUB_MOD_INIT): Improve the help message. * commands/handler.c (GRUB_MOD_INIT): Likewise. * commands/hdparm.c (options): Fix capitalizations and/or full stops. * commands/hexdump.c (options): Likewise. * commands/i386/cpuid.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/drivemap.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/halt (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/play.c (GRUB_MOD_INIT): Likewise. * commands/i386/pc/pxecmd.c (options): Likewise. * commands/i386/pc/vbetest.c (GRUB_MOD_INIT): Likewise. * commands/ieee1275/suspend.c (GRUB_MOD_INIT): Likewise. * commands/keystatus.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/loadenv.c (options): Likewise. * commands/ls.c (options): Likewise. * commands/lspci.c (GRUB_MOD_INIT): Likewise. * commands/memrw.c (GRUB_MOD_INIT): Likewise. * commands/minicmd.c (GRUB_MOD_INIT): Likewise. * commands/parttool.c (helpmsg): Likewise. * commands/probe.c (options): Likewise. * commands/read.c (GRUB_MOD_INIT): Likewise. * commands/reboot.c (GRUB_MOD_INIT): Likewise. * commands/search.c (options): Likewise. * commands/sleep.c (options): Likewise. * commands/test.c (GRUB_MOD_INIT): Likewise. * commands/true.c (GRUB_MOD_INIT): Likewise. * commands/usbtest.c (GRUB_MOD_INIT): Likewise. * commands/videotest.c (GRUB_MOD_INIT): Likewise. * lib/arg.c (help_options): Likewise.
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grub_printf ("ROM image is present.\n");
return 0;
}
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addr = grub_pci_make_address (dev, 36);
grub_pci_write_byte (addr++, 0x30);
grub_pci_write_byte (addr++, 0x33);
grub_pci_write_byte (addr++, 0x33);
grub_pci_write_byte (addr++, 0x33);
grub_pci_write_byte (addr++, 0x33);
grub_pci_write_byte (addr++, 0x33);
grub_pci_write_byte (addr++, 0x33);
grub_pci_write_byte (addr, 0);
*rom_ptr = 0;
if (*rom_ptr != 0)
{
2009-12-21 Carles Pina i Estany <carles@pina.cat> * commands/acpi.c (options): Fix capitalizations and/or full stops. (GRUB_MOD_INIT): Likewise. * commands/boot.c (GRUB_MOD_INIT): Likewise. * commands/cmp.c (grub_cmd_cmp): Likewise. * commands/echo.c (options): Likewise. * commands/efi/loadbios.c (enable_rom_area): Likewise. (enable_rom_area): Likewise. (GRUB_MOD_INIT): Likewise. * commands/gptsync.c (GRUB_MOD_INIT): Likewise. * commands/halt.c (GRUB_MOD_INIT): Improve the help message. * commands/handler.c (GRUB_MOD_INIT): Likewise. * commands/hdparm.c (options): Fix capitalizations and/or full stops. * commands/hexdump.c (options): Likewise. * commands/i386/cpuid.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/drivemap.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/halt (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/play.c (GRUB_MOD_INIT): Likewise. * commands/i386/pc/pxecmd.c (options): Likewise. * commands/i386/pc/vbetest.c (GRUB_MOD_INIT): Likewise. * commands/ieee1275/suspend.c (GRUB_MOD_INIT): Likewise. * commands/keystatus.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/loadenv.c (options): Likewise. * commands/ls.c (options): Likewise. * commands/lspci.c (GRUB_MOD_INIT): Likewise. * commands/memrw.c (GRUB_MOD_INIT): Likewise. * commands/minicmd.c (GRUB_MOD_INIT): Likewise. * commands/parttool.c (helpmsg): Likewise. * commands/probe.c (options): Likewise. * commands/read.c (GRUB_MOD_INIT): Likewise. * commands/reboot.c (GRUB_MOD_INIT): Likewise. * commands/search.c (options): Likewise. * commands/sleep.c (options): Likewise. * commands/test.c (GRUB_MOD_INIT): Likewise. * commands/true.c (GRUB_MOD_INIT): Likewise. * commands/usbtest.c (GRUB_MOD_INIT): Likewise. * commands/videotest.c (GRUB_MOD_INIT): Likewise. * lib/arg.c (help_options): Likewise.
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grub_printf ("Can\'t enable ROM area.\n");
return 0;
}
return 1;
}
static void
lock_rom_area (void)
{
grub_pci_address_t addr;
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grub_pci_device_t dev = { .bus = 0, .device = 0, .function = 0};
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addr = grub_pci_make_address (dev, 36);
grub_pci_write_byte (addr++, 0x10);
grub_pci_write_byte (addr++, 0x11);
grub_pci_write_byte (addr++, 0x11);
grub_pci_write_byte (addr++, 0x11);
grub_pci_write_byte (addr, 0x11);
}
static void
fake_bios_data (int use_rom)
{
unsigned i;
void *acpi, *smbios;
grub_uint16_t *ebda_seg_ptr, *low_mem_ptr;
ebda_seg_ptr = (grub_uint16_t *) EBDA_SEG_ADDR;
low_mem_ptr = (grub_uint16_t *) LOW_MEM_ADDR;
if ((*ebda_seg_ptr) || (*low_mem_ptr))
return;
acpi = 0;
smbios = 0;
for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
{
grub_efi_guid_t *guid =
&grub_efi_system_table->configuration_table[i].vendor_guid;
if (! grub_memcmp (guid, &acpi2_guid, sizeof (grub_efi_guid_t)))
{
acpi = grub_efi_system_table->configuration_table[i].vendor_table;
grub_dprintf ("efi", "ACPI2: %p\n", acpi);
}
else if (! grub_memcmp (guid, &acpi_guid, sizeof (grub_efi_guid_t)))
{
void *t;
t = grub_efi_system_table->configuration_table[i].vendor_table;
if (! acpi)
acpi = t;
grub_dprintf ("efi", "ACPI: %p\n", t);
}
else if (! grub_memcmp (guid, &smbios_guid, sizeof (grub_efi_guid_t)))
{
smbios = grub_efi_system_table->configuration_table[i].vendor_table;
grub_dprintf ("efi", "SMBIOS: %p\n", smbios);
}
}
*ebda_seg_ptr = FAKE_EBDA_SEG;
*low_mem_ptr = (FAKE_EBDA_SEG >> 6);
*((grub_uint16_t *) (FAKE_EBDA_SEG << 4)) = 640 - *low_mem_ptr;
if (acpi)
grub_memcpy ((char *) ((FAKE_EBDA_SEG << 4) + 16), acpi, 1024 - 16);
if ((use_rom) && (smbios))
grub_memcpy ((char *) SBIOS_ADDR, (char *) smbios + 16, 16);
}
static grub_err_t
grub_cmd_fakebios (struct grub_command *cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char *argv[] __attribute__ ((unused)))
{
if (enable_rom_area ())
{
fake_bios_data (1);
lock_rom_area ();
}
else
fake_bios_data (0);
return 0;
}
static grub_err_t
grub_cmd_loadbios (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t file;
int size;
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "no ROM image specified");
if (argc > 1)
{
file = grub_file_open (argv[1]);
if (! file)
return grub_errno;
if (file->size != 4)
2009-12-24 Carles Pina i Estany <carles@pina.cat> * bus/usb/usbhub.c: Fix capitalization, fullstop and newlines in grub_errno calls. * commands/acpi.c: Likewise. * commands/blocklist.c: Likewise. * commands/efi/loadbios.c: Likewise. * commands/i386/pc/drivemap.c: Likewise. * commands/loadenv.c: Likewise. * commands/memrw.c: Likewise. * commands/password.c: Likewise. * commands/videotest.c: Likewise. * disk/ata.c: Likewise. * disk/ata_pthru.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/ieee1275/nand.c: Likewise. * disk/ieee1275/ofdisk.c: Likewise. * disk/loopback.c: Likewise. * disk/lvm.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/raid.c: Likewise. * disk/raid6_recover.c: Likewise. * disk/scsi.c: Likewise. * efiemu/main.c: Likewise. * efiemu/mm.c: Likewise. * efiemu/pnvram.c: Likewise. * efiemu/symbols.c: Likewise. * font/font.c: Likewise. * fs/cpio.c: Likewise. * fs/hfsplus.c: Likewise. * fs/iso9660.c: Likewise. * fs/jfs.c: Likewise. * fs/minix.c: Likewise. * fs/ntfs.c: Likewise. * fs/ntfscomp.c: Likewise. * fs/reiserfs.c: Likewise. * fs/ufs.c: Likewise. * fs/xfs.c: Likewise. * gettext/gettext.c: Likewise. * include/grub/auth.h: Likewise. * kern/elf.c: Likewise. * kern/file.c: Likewise. * kern/ieee1275/init.c: Likewise. * kern/ieee1275/mmap.c: Likewise. * kern/ieee1275/openfw.c: Likewise. * kern/powerpc/dl.c: Likewise. * kern/sparc64/dl.c: Likewise. * lib/arg.c: Likewise. * loader/i386/bsd.c: Likewise. * loader/i386/bsdXX.c: Likewise. * loader/i386/efi/linux.c: Likewise. * loader/i386/efi/xnu.c: Likewise. * loader/i386/ieee1275/linux.c: Likewise. * loader/i386/linux.c: Likewise. * loader/i386/multiboot.c: Likewise. * loader/i386/pc/linux.c: Likewise. * loader/i386/pc/multiboot2.c: Likewise. * loader/i386/xnu.c: Likewise. * loader/ieee1275/multiboot2.c: Likewise. * loader/macho.c: Likewise. * loader/machoXX.c: Likewise. * loader/multiboot2.c: Likewise. * loader/multiboot_loader.c: Likewise. * loader/powerpc/ieee1275/linux.c: Likewise. * loader/sparc64/ieee1275/linux.c: Likewise. * loader/xnu.c: Likewise. * loader/xnu_resume.c: Likewise. * mmap/i386/pc/mmap.c: Likewise. * normal/menu_viewer.c: Likewise. * partmap/acorn.c: Likewise. * partmap/amiga.c: Likewise. * partmap/apple.c: Likewise. * script/lexer.c: Likewise. * term/gfxterm.c: Likewise. * term/i386/pc/serial.c: Likewise. * term/i386/pc/vga.c: Likewise. * term/ieee1275/ofconsole.c: Likewise. * term/terminfo.c: Likewise. * video/bitmap.c: Likewise. * video/efi_gop.c: Likewise. * video/efi_uga.c: Likewise. * video/fb/video_fb.c: Likewise. * video/i386/pc/vbe.c: Likewise. * video/readers/tga.c: Likewise. * video/video.c: Likewise.
2009-12-24 22:53:05 +00:00
grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid int10 dump size");
else
grub_file_read (file, (void *) 0x40, 4);
grub_file_close (file);
if (grub_errno)
return grub_errno;
}
file = grub_file_open (argv[0]);
if (! file)
return grub_errno;
size = file->size;
if ((size < 0x10000) || (size > 0x40000))
2009-12-24 Carles Pina i Estany <carles@pina.cat> * bus/usb/usbhub.c: Fix capitalization, fullstop and newlines in grub_errno calls. * commands/acpi.c: Likewise. * commands/blocklist.c: Likewise. * commands/efi/loadbios.c: Likewise. * commands/i386/pc/drivemap.c: Likewise. * commands/loadenv.c: Likewise. * commands/memrw.c: Likewise. * commands/password.c: Likewise. * commands/videotest.c: Likewise. * disk/ata.c: Likewise. * disk/ata_pthru.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/ieee1275/nand.c: Likewise. * disk/ieee1275/ofdisk.c: Likewise. * disk/loopback.c: Likewise. * disk/lvm.c: Likewise. * disk/mdraid_linux.c: Likewise. * disk/raid.c: Likewise. * disk/raid6_recover.c: Likewise. * disk/scsi.c: Likewise. * efiemu/main.c: Likewise. * efiemu/mm.c: Likewise. * efiemu/pnvram.c: Likewise. * efiemu/symbols.c: Likewise. * font/font.c: Likewise. * fs/cpio.c: Likewise. * fs/hfsplus.c: Likewise. * fs/iso9660.c: Likewise. * fs/jfs.c: Likewise. * fs/minix.c: Likewise. * fs/ntfs.c: Likewise. * fs/ntfscomp.c: Likewise. * fs/reiserfs.c: Likewise. * fs/ufs.c: Likewise. * fs/xfs.c: Likewise. * gettext/gettext.c: Likewise. * include/grub/auth.h: Likewise. * kern/elf.c: Likewise. * kern/file.c: Likewise. * kern/ieee1275/init.c: Likewise. * kern/ieee1275/mmap.c: Likewise. * kern/ieee1275/openfw.c: Likewise. * kern/powerpc/dl.c: Likewise. * kern/sparc64/dl.c: Likewise. * lib/arg.c: Likewise. * loader/i386/bsd.c: Likewise. * loader/i386/bsdXX.c: Likewise. * loader/i386/efi/linux.c: Likewise. * loader/i386/efi/xnu.c: Likewise. * loader/i386/ieee1275/linux.c: Likewise. * loader/i386/linux.c: Likewise. * loader/i386/multiboot.c: Likewise. * loader/i386/pc/linux.c: Likewise. * loader/i386/pc/multiboot2.c: Likewise. * loader/i386/xnu.c: Likewise. * loader/ieee1275/multiboot2.c: Likewise. * loader/macho.c: Likewise. * loader/machoXX.c: Likewise. * loader/multiboot2.c: Likewise. * loader/multiboot_loader.c: Likewise. * loader/powerpc/ieee1275/linux.c: Likewise. * loader/sparc64/ieee1275/linux.c: Likewise. * loader/xnu.c: Likewise. * loader/xnu_resume.c: Likewise. * mmap/i386/pc/mmap.c: Likewise. * normal/menu_viewer.c: Likewise. * partmap/acorn.c: Likewise. * partmap/amiga.c: Likewise. * partmap/apple.c: Likewise. * script/lexer.c: Likewise. * term/gfxterm.c: Likewise. * term/i386/pc/serial.c: Likewise. * term/i386/pc/vga.c: Likewise. * term/ieee1275/ofconsole.c: Likewise. * term/terminfo.c: Likewise. * video/bitmap.c: Likewise. * video/efi_gop.c: Likewise. * video/efi_uga.c: Likewise. * video/fb/video_fb.c: Likewise. * video/i386/pc/vbe.c: Likewise. * video/readers/tga.c: Likewise. * video/video.c: Likewise.
2009-12-24 22:53:05 +00:00
grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid bios dump size");
else if (enable_rom_area ())
{
grub_file_read (file, (void *) VBIOS_ADDR, size);
fake_bios_data (size <= 0x40000);
lock_rom_area ();
}
grub_file_close (file);
return grub_errno;
}
static grub_command_t cmd_fakebios, cmd_loadbios;
GRUB_MOD_INIT(loadbios)
{
cmd_fakebios = grub_register_command ("fakebios", grub_cmd_fakebios,
2009-12-21 Carles Pina i Estany <carles@pina.cat> * commands/acpi.c (options): Fix capitalizations and/or full stops. (GRUB_MOD_INIT): Likewise. * commands/boot.c (GRUB_MOD_INIT): Likewise. * commands/cmp.c (grub_cmd_cmp): Likewise. * commands/echo.c (options): Likewise. * commands/efi/loadbios.c (enable_rom_area): Likewise. (enable_rom_area): Likewise. (GRUB_MOD_INIT): Likewise. * commands/gptsync.c (GRUB_MOD_INIT): Likewise. * commands/halt.c (GRUB_MOD_INIT): Improve the help message. * commands/handler.c (GRUB_MOD_INIT): Likewise. * commands/hdparm.c (options): Fix capitalizations and/or full stops. * commands/hexdump.c (options): Likewise. * commands/i386/cpuid.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/drivemap.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/halt (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/i386/pc/play.c (GRUB_MOD_INIT): Likewise. * commands/i386/pc/pxecmd.c (options): Likewise. * commands/i386/pc/vbetest.c (GRUB_MOD_INIT): Likewise. * commands/ieee1275/suspend.c (GRUB_MOD_INIT): Likewise. * commands/keystatus.c (options): Likewise. (GRUB_MOD_INIT): Likewise. * commands/loadenv.c (options): Likewise. * commands/ls.c (options): Likewise. * commands/lspci.c (GRUB_MOD_INIT): Likewise. * commands/memrw.c (GRUB_MOD_INIT): Likewise. * commands/minicmd.c (GRUB_MOD_INIT): Likewise. * commands/parttool.c (helpmsg): Likewise. * commands/probe.c (options): Likewise. * commands/read.c (GRUB_MOD_INIT): Likewise. * commands/reboot.c (GRUB_MOD_INIT): Likewise. * commands/search.c (options): Likewise. * commands/sleep.c (options): Likewise. * commands/test.c (GRUB_MOD_INIT): Likewise. * commands/true.c (GRUB_MOD_INIT): Likewise. * commands/usbtest.c (GRUB_MOD_INIT): Likewise. * commands/videotest.c (GRUB_MOD_INIT): Likewise. * lib/arg.c (help_options): Likewise.
2009-12-21 22:06:04 +00:00
0, "Fake bios.");
cmd_loadbios = grub_register_command ("loadbios", grub_cmd_loadbios,
2009-12-26 Carles Pina i Estany <carles@pina.cat> * commands/help.c (grub_cmd_help): Print the command name before the summary. (GRUB_MOD_INIT): Remove command name from the summary. * kern/command.c (GRUB_MOD_INIT): If summary is null assign an empty strig as summary. * lib/arg.c (find_long): Print the command name before the summary. * commands/acpi.c (GRUB_MOD_INIT): Remove command name from the summary. * commands/blocklist.c (GRUB_MOD_INIT): Likewise. * commands/cat.c (GRUB_MOD_INIT): Likewise. * commands/cmp.c (GRUB_MOD_INIT): Likewise. * commands/configfile.c (GRUB_MOD_INIT): Likewise. * commands/crc.c (GRUB_MOD_INIT): Likewise. * commands/date.c (GRUB_MOD_INIT): Likewise. * commands/echo.c (GRUB_MOD_INIT): Likewise. * commands/efi/loadbios.c (GRUB_MOD_INIT): Likewise. * commands/gptsync.c (GRUB_MOD_INIT): Likewise. * commands/handler.c (GRUB_MOD_INIT): Likewise. * commands/hdparm.c (GRUB_MOD_INIT): Likewise. * commands/hexdump.c (GRUB_MOD_INIT): Likewise. * commands/i386/cpuid.c (GRUB_MOD_INIT): Likewise. * commands/i386/pc/halt.c (GRUB_MOD_INIT): Likewise. * commands/i386/pc/play.c (GRUB_MOD_INIT): Likewise. * commands/i386/pc/pxecmd.c (GRUB_MOD_INIT): Likewise. * commands/keystatus.c (GRUB_MOD_INIT): Likewise. * commands/loadenv.c (GRUB_MOD_INIT): Likewise. * commands/ls.c (GRUB_MOD_INIT): Likewise. * commands/lspci.c (GRUB_MOD_INIT): Likewise. * commands/memrw.c (GRUB_MOD_INIT): Likewise. * commands/minicmd.c (GRUB_MOD_INIT): Likewise. * commands/parttool.c (GRUB_MOD_INIT): Likewise. * commands/password.c (GRUB_MOD_INIT): Likewise. * commands/probe.c (GRUB_MOD_INIT): Likewise. * commands/read.c (GRUB_MOD_INIT): Likewise. * commands/search.c (GRUB_MOD_INIT): Likewise. * commands/sleep.c (GRUB_MOD_INIT): Likewise. * commands/test.c (GRUB_MOD_INIT): Likewise. * commands/xnu_uuid.c (GRUB_MOD_INIT): Likewise. * efiemu/main.c (GRUB_MOD_INIT): Likewise. * font/font_cmd.c (GRUB_MOD_INIT): Likewise. * gettext/gettext.c (GRUB_MOD_INIT): Likewise. * kern/corecmd.c (GRUB_MOD_INIT): Likewise. * lib/arg.c (GRUB_MOD_INIT): Likewise. * loader/efi/appleloader.c (GRUB_MOD_INIT): Likewise. * loader/i386/bsd.c (GRUB_MOD_INIT): Likewise. * loader/xnu.c (GRUB_MOD_INIT): Likewise. * mmap/mmap.c (GRUB_MOD_INIT): Likewise. * term/terminfo.c (GRUB_MOD_INIT): Likewise. * video/readers/jpeg.c (GRUB_MOD_INIT): Likewise. * video/readers/png.c (GRUB_MOD_INIT): Likewise. * video/readers/tga.c (GRUB_MOD_INIT): Likewise.
2009-12-25 23:50:59 +00:00
"BIOS_DUMP [INT10_DUMP]",
"Load bios dump.");
}
GRUB_MOD_FINI(loadbios)
{
grub_unregister_command (cmd_fakebios);
grub_unregister_command (cmd_loadbios);
}