mirror of
https://git.proxmox.com/git/grub2
synced 2025-10-31 20:57:24 +00:00
d43a5ee651
PIT isn't available on some of new hardware including Hyper-V. So use pmtimer for calibration. Moreover pmtimer calibration is faster, so use it on coreboor where booting time is important. Based on patch by Michael Chang.
60 lines
1.9 KiB
C
60 lines
1.9 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_packed_guid_t acpi_guid = GRUB_EFI_ACPI_TABLE_GUID;
|
|
|
|
for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
|
|
{
|
|
grub_efi_packed_guid_t *guid =
|
|
&grub_efi_system_table->configuration_table[i].vendor_guid;
|
|
|
|
if (! grub_memcmp (guid, &acpi_guid, sizeof (grub_efi_packed_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_packed_guid_t acpi20_guid = GRUB_EFI_ACPI_20_TABLE_GUID;
|
|
|
|
for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
|
|
{
|
|
grub_efi_packed_guid_t *guid =
|
|
&grub_efi_system_table->configuration_table[i].vendor_guid;
|
|
|
|
if (! grub_memcmp (guid, &acpi20_guid, sizeof (grub_efi_packed_guid_t)))
|
|
return (struct grub_acpi_rsdp_v20 *)
|
|
grub_efi_system_table->configuration_table[i].vendor_table;
|
|
}
|
|
return 0;
|
|
}
|