OvmfPkg/Bhyve/AcpiTables/Mcfg.aslc

   1 /*
   2  * Copyright (c) 2020, Rebecca Cran <rebecca@bsdio.com>
   3  * Copyright (c) 2015, Nahanni Systems, Inc.
   4  *
   5  * SPDX-License-Identifier: BSD-2-Clause-Patent
   6  */
   7
   8 #include "Platform.h"
   9
  10 #define EFI_ACPI_OEM_TABLE_ID                      SIGNATURE_64('B','V','M','C','F','G',' ',' ')
  11
  12 #pragma pack(1)
  13
  14 typedef struct {
  15   EFI_ACPI_DESCRIPTION_HEADER   Header;
  16   UINT64                        Reserved0;
  17   UINT64                        BaseAddress;
  18   UINT16                        PciSegmentGroupNumber;
  19   UINT8                         StartBusNumber;
  20   UINT8                         EndBusNumber;
  21   UINT32                        Reserved1;
  22 } EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE;
  23
  24 #pragma pack()
  25
  26 EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE MCFG = {
  27   {
  28     EFI_ACPI_2_0_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_SIGNATURE,
  29     sizeof (EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE),
  30     EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_REVISION,
  31     0,                          // to make sum of entire table == 0
  32     {EFI_ACPI_OEM_ID},          // OEMID is a 6 bytes long field
  33     EFI_ACPI_OEM_TABLE_ID,      // OEM table identification(8 bytes long)
  34     EFI_ACPI_OEM_REVISION,      // OEM revision number
  35     EFI_ACPI_CREATOR_ID,        // ASL compiler vendor ID
  36     EFI_ACPI_CREATOR_REVISION   // ASL compiler revision number
  37   },
  38   0,                            // Reserved
  39   0x00000000E0000000,           // BaseAddress
  40   0x0000,                       // PciSegmentGroupNumber
  41   0,                            // StartBusNumber
  42   255,                          // EndBusNumber
  43   0                             // Reserved
  44 };
  45
  46
  47 VOID *
  48 ReferenceAcpiTable (
  49   VOID
  50   )
  51 {
  52   //
  53   // Reference the table being generated to prevent the optimizer from removing the
  54   // data structure from the exeutable
  55   //
  56   return (VOID*)&MCFG;
  57 }