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audk/Vlv2TbltDevicePkg/Library/BiosIdLib/BiosIdLib.c

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/*++
Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that 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.
Module Name:
BiosIdLib.c
Abstract:
Boot service DXE BIOS ID library implementation.
These functions in this file can be called during DXE and cannot be called during runtime
or in SMM which should use a RT or SMM library.
--*/
#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/HobLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/BiosIdLib.h>
#include <Guid/BiosId.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/LoadedImage.h>
EFI_STATUS
GetImageFromFv (
IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,
IN EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
OUT VOID **Buffer,
OUT UINTN *Size
)
{
EFI_STATUS Status;
EFI_FV_FILETYPE FileType;
EFI_FV_FILE_ATTRIBUTES Attributes;
UINT32 AuthenticationStatus;
//
// Read desired section content in NameGuid file
//
*Buffer = NULL;
*Size = 0;
Status = Fv->ReadSection (
Fv,
NameGuid,
SectionType,
0,
Buffer,
Size,
&AuthenticationStatus
);
if (EFI_ERROR (Status) && (SectionType == EFI_SECTION_TE)) {
//
// Try reading PE32 section, since the TE section does not exist
//
*Buffer = NULL;
*Size = 0;
Status = Fv->ReadSection (
Fv,
NameGuid,
EFI_SECTION_PE32,
0,
Buffer,
Size,
&AuthenticationStatus
);
}
if (EFI_ERROR (Status) &&
((SectionType == EFI_SECTION_TE) || (SectionType == EFI_SECTION_PE32))) {
//
// Try reading raw file, since the desired section does not exist
//
*Buffer = NULL;
*Size = 0;
Status = Fv->ReadFile (
Fv,
NameGuid,
Buffer,
Size,
&FileType,
&Attributes,
&AuthenticationStatus
);
}
return Status;
}
EFI_STATUS
GetImageEx (
IN EFI_HANDLE ImageHandle,
IN EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
OUT VOID **Buffer,
OUT UINTN *Size,
BOOLEAN WithinImageFv
)
{
EFI_STATUS Status;
EFI_HANDLE *HandleBuffer;
UINTN HandleCount;
UINTN Index;
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
EFI_FIRMWARE_VOLUME2_PROTOCOL *ImageFv;
EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;
if (ImageHandle == NULL && WithinImageFv) {
return EFI_INVALID_PARAMETER;
}
Status = EFI_NOT_FOUND;
ImageFv = NULL;
if (ImageHandle != NULL) {
Status = gBS->HandleProtocol (
ImageHandle,
&gEfiLoadedImageProtocolGuid,
(VOID **) &LoadedImage
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->HandleProtocol (
LoadedImage->DeviceHandle,
&gEfiFirmwareVolume2ProtocolGuid,
(VOID **) &ImageFv
);
if (!EFI_ERROR (Status)) {
Status = GetImageFromFv (ImageFv, NameGuid, SectionType, Buffer, Size);
}
}
if (Status == EFI_SUCCESS || WithinImageFv) {
return Status;
}
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiFirmwareVolume2ProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Find desired image in all Fvs
//
for (Index = 0; Index < HandleCount; ++Index) {
Status = gBS->HandleProtocol (
HandleBuffer[Index],
&gEfiFirmwareVolume2ProtocolGuid,
(VOID**)&Fv
);
if (EFI_ERROR (Status)) {
gBS->FreePool(HandleBuffer);
return Status;
}
if (ImageFv != NULL && Fv == ImageFv) {
continue;
}
Status = GetImageFromFv (Fv, NameGuid, SectionType, Buffer, Size);
if (!EFI_ERROR (Status)) {
break;
}
}
gBS->FreePool(HandleBuffer);
//
// Not found image
//
if (Index == HandleCount) {
return EFI_NOT_FOUND;
}
return EFI_SUCCESS;
}
/**
This function returns BIOS ID by searching HOB or FV.
@param BiosIdImage The BIOS ID got from HOB or FV.
@retval EFI_SUCCESS All parameters were valid and BIOS ID has been got.
@retval EFI_NOT_FOUND BiosId image is not found, and no parameter will be modified.
@retval EFI_INVALID_PARAMETER The parameter is NULL.
**/
EFI_STATUS
GetBiosId (
OUT BIOS_ID_IMAGE *BiosIdImage
)
{
EFI_STATUS Status;
VOID *Address = NULL;
UINTN Size = 0;
DEBUG ((EFI_D_INFO, "Get BIOS ID from FV\n"));
Status = GetImageEx (
NULL,
&gEfiBiosIdGuid,
EFI_SECTION_RAW,
&Address,
&Size,
FALSE
);
if (Status == EFI_SUCCESS) {
//
// BiosId image is present in FV
//
if (Address != NULL) {
Size = sizeof (BIOS_ID_IMAGE);
gBS->CopyMem (
(void *) BiosIdImage,
Address,
Size
);
//
// GetImage () allocated buffer for Address, now clear it.
//
gBS->FreePool (Address);
DEBUG ((EFI_D_INFO, "Get BIOS ID from FV successfully\n"));
DEBUG ((EFI_D_INFO, "BIOS ID: %s\n", (CHAR16 *) (&(BiosIdImage->BiosIdString))));
return EFI_SUCCESS;
}
}
return EFI_NOT_FOUND;
}
/**
This function returns the Version & Release Date and Time by getting and converting
BIOS ID.
@param BiosVersion The Bios Version out of the conversion.
@param BiosReleaseDate The Bios Release Date out of the conversion.
@param BiosReleaseTime - The Bios Release Time out of the conversion.
@retval EFI_SUCCESS - BIOS Version & Release Date and Time have been got successfully.
@retval EFI_NOT_FOUND - BiosId image is not found, and no parameter will be modified.
@retval EFI_INVALID_PARAMETER - All the parameters are NULL.
**/
EFI_STATUS
GetBiosVersionDateTime (
OUT CHAR16 *BiosVersion, OPTIONAL
OUT CHAR16 *BiosReleaseDate, OPTIONAL
OUT CHAR16 *BiosReleaseTime OPTIONAL
)
{
EFI_STATUS Status;
BIOS_ID_IMAGE BiosIdImage;
if ((BiosVersion == NULL) && (BiosReleaseDate == NULL) && (BiosReleaseTime == NULL)) {
return EFI_INVALID_PARAMETER;
}
Status = GetBiosId (&BiosIdImage);
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
if (BiosVersion != NULL) {
//
// Fill the BiosVersion data from the BIOS ID.
//
StrCpy (BiosVersion, (CHAR16 *) (&(BiosIdImage.BiosIdString)));
}
if (BiosReleaseDate != NULL) {
//
// Fill the build timestamp date from the BIOS ID in the "MM/DD/YY" format.
//
BiosReleaseDate[0] = BiosIdImage.BiosIdString.TimeStamp[2];
BiosReleaseDate[1] = BiosIdImage.BiosIdString.TimeStamp[3];
BiosReleaseDate[2] = (CHAR16) ((UINT8) ('/'));
BiosReleaseDate[3] = BiosIdImage.BiosIdString.TimeStamp[4];
BiosReleaseDate[4] = BiosIdImage.BiosIdString.TimeStamp[5];
BiosReleaseDate[5] = (CHAR16) ((UINT8) ('/'));
//
// Add 20 for SMBIOS table
// Current Linux kernel will misjudge 09 as year 0, so using 2009 for SMBIOS table
//
BiosReleaseDate[6] = '2';
BiosReleaseDate[7] = '0';
BiosReleaseDate[8] = BiosIdImage.BiosIdString.TimeStamp[0];
BiosReleaseDate[9] = BiosIdImage.BiosIdString.TimeStamp[1];
BiosReleaseDate[10] = (CHAR16) ((UINT8) ('\0'));
}
if (BiosReleaseTime != NULL) {
//
// Fill the build timestamp time from the BIOS ID in the "HH:MM" format.
//
BiosReleaseTime[0] = BiosIdImage.BiosIdString.TimeStamp[6];
BiosReleaseTime[1] = BiosIdImage.BiosIdString.TimeStamp[7];
BiosReleaseTime[2] = (CHAR16) ((UINT8) (':'));
BiosReleaseTime[3] = BiosIdImage.BiosIdString.TimeStamp[8];
BiosReleaseTime[4] = BiosIdImage.BiosIdString.TimeStamp[9];
BiosReleaseTime[5] = (CHAR16) ((UINT8) ('\0'));
}
return EFI_SUCCESS;
}
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