src/soc/intel/common/nhlt.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright 2015 Google, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <cbmem.h>
  17 #include <nhlt.h>
  18 #include <soc/nvs.h>
  19
  20 uintptr_t nhlt_soc_serialize(struct nhlt *nhlt, uintptr_t acpi_addr)
  21 {
  22         return nhlt_soc_serialize_oem_overrides(nhlt, acpi_addr, NULL, NULL);
  23 }
  24
  25 uintptr_t nhlt_soc_serialize_oem_overrides(struct nhlt *nhlt,
  26         uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id)
  27 {
  28         global_nvs_t *gnvs;
  29
  30         gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
  31
  32         if (gnvs == NULL)
  33                 return acpi_addr;
  34
  35         /* Update NHLT GNVS Data */
  36         gnvs->nhla = (uintptr_t)acpi_addr;
  37         gnvs->nhll = nhlt_current_size(nhlt);
  38
  39         return nhlt_serialize_oem_overrides(nhlt, acpi_addr,
  40                                                 oem_id, oem_table_id);
  41 }