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OvmfPkg/SMBIOS: Provide default Type 0 (BIOS Information) structure 

Insert a default, OVMF-specific Type 0 (BIOS Information) structure
into the SMBIOS table, unless the underlying guest VM supplies its
own, overriding instance.

As an example, QEMU, while allowing the user to specifically force
generation of a Type 0 structure, will not generate one by default,
considering that task to be the responsibility of the BIOS itself.

Based on an earlier out-of-tree patch by Laszlo Ersek <lersek@redhat.com>

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16868 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Gabriel Somlo 2015-02-13 19:50:05 +00:00 committed by jljusten
parent c0a8cf34f6
commit 2425674438
1 changed files with 66 additions and 0 deletions
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66
OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c
View File

@ -16,6 +16,51 @@
#include "SmbiosPlatformDxe.h"
//
// Type definition and contents of the default Type 0 SMBIOS table.
//
#pragma pack(1)
typedef struct {
SMBIOS_TABLE_TYPE0 Base;
UINT8 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)
"EFI Development Kit II / OVMF\0" // Vendor
"0.0.0\0" // BiosVersion
"02/06/2015\0" // BiosReleaseDate
};
/**
Validates the SMBIOS entry point structure
@ -96,12 +141,15 @@ InstallAllStructures (
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
@ -115,12 +163,30 @@ InstallAllStructures (
);
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;
}