src/soc/intel/common/vbt.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <arch/acpi.h>
  16 #include <bootmode.h>
  17 #include <bootstate.h>
  18
  19 #include "vbt.h"
  20 #include <drivers/intel/gma/opregion.h>
  21
  22 void *vbt_get(void)
  23 {
  24         if (!CONFIG(RUN_FSP_GOP))
  25                 return NULL;
  26
  27         /* Normal mode and S3 resume path PEIM GFX init is not needed.
  28          * Passing NULL as VBT will not make PEIM GFX to execute. */
  29         if (acpi_is_wakeup_s3())
  30                 return NULL;
  31         if (!display_init_required())
  32                 return NULL;
  33         return locate_vbt(NULL);
  34 }