src/soc/amd/common/fsp/fsp-acpi.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi.h>
   4 #include <amdblocks/acpi.h>
   5 #include <console/console.h>
   6 #include <fsp/util.h>
   7 #include <FspGuids.h>
   8 #include <string.h>
   9 #include <types.h>
  10
  11 struct amd_fsp_acpi_hob_info {
  12         uint32_t table_size_in_bytes;
  13         uint8_t total_hobs_for_table;
  14         uint8_t sequence_number;
  15         uint16_t reserved;
  16         uint16_t hob_payload[0xffc8]; /* maximum payload size */
  17 } __packed;
  18
  19 static unsigned long add_agesa_fsp_acpi_table(guid_t guid, const char *name, acpi_rsdp_t *rsdp,
  20                                               unsigned long current)
  21 {
  22         const struct amd_fsp_acpi_hob_info *data;
  23         void *table = (void *)current;
  24         size_t hob_size;
  25
  26         data = fsp_find_extension_hob_by_guid(guid.b, &hob_size);
  27         if (data == NULL) {
  28                 printk(BIOS_ERR, "AGESA %s ACPI table was not found.\n", name);
  29                 return current;
  30         }
  31
  32         if (data->table_size_in_bytes > sizeof(data->hob_payload)) {
  33                 printk(BIOS_ERR, "AGESA %s ACPI table size larger than maximum HOB payload "
  34                        "size.\n", name);
  35                 return current;
  36         }
  37
  38         printk(BIOS_INFO, "ACPI:    * %s (AGESA).\n", name);
  39
  40         memcpy(table, data->hob_payload, data->table_size_in_bytes);
  41
  42         current += data->table_size_in_bytes;
  43         acpi_add_table(rsdp, table);
  44         current = acpi_align_current(current);
  45
  46         return current;
  47 }
  48
  49 unsigned long acpi_add_fsp_tables(unsigned long current, acpi_rsdp_t *rsdp)
  50 {
  51         /* add ALIB SSDT from HOB */
  52         current = acpi_align_current(current);
  53         current = add_agesa_fsp_acpi_table(AMD_FSP_ACPI_ALIB_HOB_GUID, "ALIB", rsdp, current);
  54
  55         return current;
  56 }