diff options
Diffstat (limited to 'roms/edk2/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c')
| -rw-r--r-- | roms/edk2/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/roms/edk2/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c b/roms/edk2/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c new file mode 100644 index 000000000..7991a19dc --- /dev/null +++ b/roms/edk2/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c @@ -0,0 +1,211 @@ +/** @file
+ This driver installs SMBIOS information for OVMF
+
+ Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+ Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "SmbiosPlatformDxe.h"
+
+#define TYPE0_STRINGS \
+ "EFI Development Kit II / OVMF\0" /* Vendor */ \
+ "0.0.0\0" /* BiosVersion */ \
+ "02/06/2015\0" /* BiosReleaseDate */
+//
+// Type definition and contents of the default Type 0 SMBIOS table.
+//
+#pragma pack(1)
+typedef struct {
+ SMBIOS_TABLE_TYPE0 Base;
+ UINT8 Strings[sizeof(TYPE0_STRINGS)];
+} OVMF_TYPE0;
+#pragma pack()
+
+STATIC CONST OVMF_TYPE0 mOvmfDefaultType0 = {
+ {
+ // SMBIOS_STRUCTURE Hdr
+ {
+ EFI_SMBIOS_TYPE_BIOS_INFORMATION, // UINT8 Type
+ sizeof (SMBIOS_TABLE_TYPE0), // UINT8 Length
+ },
+ 1, // SMBIOS_TABLE_STRING Vendor
+ 2, // SMBIOS_TABLE_STRING BiosVersion
+ 0xE800,// UINT16 BiosSegment
+ 3, // SMBIOS_TABLE_STRING BiosReleaseDate
+ 0, // UINT8 BiosSize
+ { // MISC_BIOS_CHARACTERISTICS BiosCharacteristics
+ 0, // Reserved :2
+ 0, // Unknown :1
+ 1, // BiosCharacteristicsNotSupported :1
+ // Remaining BiosCharacteristics bits left unset :60
+ },
+ { // BIOSCharacteristicsExtensionBytes[2]
+ 0, // BiosReserved
+ 0x1C // SystemReserved = VirtualMachineSupported |
+ // UefiSpecificationSupported |
+ // TargetContentDistributionEnabled
+ },
+ 0, // UINT8 SystemBiosMajorRelease
+ 0, // UINT8 SystemBiosMinorRelease
+ 0xFF, // UINT8 EmbeddedControllerFirmwareMajorRelease
+ 0xFF // UINT8 EmbeddedControllerFirmwareMinorRelease
+ },
+ // Text strings (unformatted area)
+ TYPE0_STRINGS
+};
+
+
+/**
+ Get SMBIOS record length.
+
+ @param SmbiosTable SMBIOS pointer.
+
+**/
+UINTN
+SmbiosTableLength (
+ IN SMBIOS_STRUCTURE_POINTER SmbiosTable
+ )
+{
+ CHAR8 *AChar;
+ UINTN Length;
+
+ AChar = (CHAR8 *)(SmbiosTable.Raw + SmbiosTable.Hdr->Length);
+
+ //
+ // Each structure shall be terminated by a double-null (SMBIOS spec.7.1)
+ //
+ while ((*AChar != 0) || (*(AChar + 1) != 0)) {
+ AChar ++;
+ }
+ Length = ((UINTN)AChar - (UINTN)SmbiosTable.Raw + 2);
+
+ return Length;
+}
+
+
+/**
+ Install all structures from the given SMBIOS structures block
+
+ @param Smbios SMBIOS protocol
+ @param TableAddress SMBIOS tables starting address
+
+**/
+EFI_STATUS
+InstallAllStructures (
+ IN EFI_SMBIOS_PROTOCOL *Smbios,
+ IN UINT8 *TableAddress
+ )
+{
+ EFI_STATUS Status;
+ SMBIOS_STRUCTURE_POINTER SmbiosTable;
+ EFI_SMBIOS_HANDLE SmbiosHandle;
+ BOOLEAN NeedSmbiosType0;
+
+ SmbiosTable.Raw = TableAddress;
+ if (SmbiosTable.Raw == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ NeedSmbiosType0 = TRUE;
+
+ while (SmbiosTable.Hdr->Type != 127) {
+ //
+ // Log the SMBIOS data for this structure
+ //
+ SmbiosHandle = SmbiosTable.Hdr->Handle;
+ Status = Smbios->Add (
+ Smbios,
+ NULL,
+ &SmbiosHandle,
+ (EFI_SMBIOS_TABLE_HEADER*) SmbiosTable.Raw
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ if (SmbiosTable.Hdr->Type == 0) {
+ NeedSmbiosType0 = FALSE;
+ }
+
+ //
+ // Get the next structure address
+ //
+ SmbiosTable.Raw = (UINT8 *)(SmbiosTable.Raw + SmbiosTableLength (SmbiosTable));
+ }
+
+ if (NeedSmbiosType0) {
+ //
+ // Add OVMF default Type 0 (BIOS Information) table
+ //
+ SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
+ Status = Smbios->Add (
+ Smbios,
+ NULL,
+ &SmbiosHandle,
+ (EFI_SMBIOS_TABLE_HEADER*) &mOvmfDefaultType0
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Installs SMBIOS information for OVMF
+
+ @param ImageHandle Module's image handle
+ @param SystemTable Pointer of EFI_SYSTEM_TABLE
+
+ @retval EFI_SUCCESS Smbios data successfully installed
+ @retval Other Smbios data was not installed
+
+**/
+EFI_STATUS
+EFIAPI
+SmbiosTablePublishEntry (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_SMBIOS_PROTOCOL *Smbios;
+ SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure;
+ UINT8 *SmbiosTables;
+
+ //
+ // Find the SMBIOS protocol
+ //
+ Status = gBS->LocateProtocol (
+ &gEfiSmbiosProtocolGuid,
+ NULL,
+ (VOID**)&Smbios
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Add Xen or QEMU SMBIOS data if found
+ //
+ EntryPointStructure = GetXenSmbiosTables ();
+ if (EntryPointStructure != NULL) {
+ SmbiosTables = (UINT8*)(UINTN)EntryPointStructure->TableAddress;
+ } else {
+ SmbiosTables = GetQemuSmbiosTables ();
+ }
+
+ if (SmbiosTables != NULL) {
+ Status = InstallAllStructures (Smbios, SmbiosTables);
+
+ //
+ // Free SmbiosTables if allocated by Qemu (i.e., NOT by Xen):
+ //
+ if (EntryPointStructure == NULL) {
+ FreePool (SmbiosTables);
+ }
+ }
+
+ return Status;
+}
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