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/** @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>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#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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