grub/commands/efi/acpi.c
2009-06-10 21:04:23 +00:00

59 lines
1.8 KiB
C

/* acpi.c - get acpi tables. */
/*
* 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/acpi.h>
#include <grub/misc.h>
#include <grub/efi/efi.h>
#include <grub/efi/api.h>
struct grub_acpi_rsdp_v10 *
grub_machine_acpi_get_rsdpv1 (void)
{
unsigned i;
static grub_efi_guid_t acpi_guid = GRUB_EFI_ACPI_TABLE_GUID;
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, &acpi_guid, sizeof (grub_efi_guid_t)))
return (struct grub_acpi_rsdp_v10 *)
grub_efi_system_table->configuration_table[i].vendor_table;
}
return 0;
}
struct grub_acpi_rsdp_v20 *
grub_machine_acpi_get_rsdpv2 (void)
{
unsigned i;
static grub_efi_guid_t acpi20_guid = GRUB_EFI_ACPI_20_TABLE_GUID;
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, &acpi20_guid, sizeof (grub_efi_guid_t)))
return (struct grub_acpi_rsdp_v20 *)
grub_efi_system_table->configuration_table[i].vendor_table;
}
return 0;
}