/** @file | |
Copyright (c) 2006 - 2014, 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 "LegacyBiosInterface.h" | |
/** | |
Assign drive number to legacy HDD drives prior to booting an EFI | |
aware OS so the OS can access drives without an EFI driver. | |
Note: BBS compliant drives ARE NOT available until this call by | |
either shell or EFI. | |
@param This Protocol instance pointer. | |
@param BbsCount Number of BBS_TABLE structures | |
@param BbsTable List BBS entries | |
@retval EFI_SUCCESS Drive numbers assigned | |
**/ | |
EFI_STATUS | |
EFIAPI | |
LegacyBiosPrepareToBootEfi ( | |
IN EFI_LEGACY_BIOS_PROTOCOL *This, | |
OUT UINT16 *BbsCount, | |
OUT BBS_TABLE **BbsTable | |
) | |
{ | |
// | |
// Shadow All Opion ROM | |
// | |
LegacyBiosShadowAllLegacyOproms (This); | |
return EFI_SUCCESS; | |
} | |
/** | |
To boot from an unconventional device like parties and/or execute | |
HDD diagnostics. | |
@param This Protocol instance pointer. | |
@param Attributes How to interpret the other input parameters | |
@param BbsEntry The 0-based index into the BbsTable for the | |
parent device. | |
@param BeerData Pointer to the 128 bytes of ram BEER data. | |
@param ServiceAreaData Pointer to the 64 bytes of raw Service Area data. | |
The caller must provide a pointer to the specific | |
Service Area and not the start all Service Areas. | |
EFI_INVALID_PARAMETER if error. Does NOT return if no error. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
LegacyBiosBootUnconventionalDevice ( | |
IN EFI_LEGACY_BIOS_PROTOCOL *This, | |
IN UDC_ATTRIBUTES Attributes, | |
IN UINTN BbsEntry, | |
IN VOID *BeerData, | |
IN VOID *ServiceAreaData | |
) | |
{ | |
return EFI_INVALID_PARAMETER; | |
} | |
/** | |
Attempt to legacy boot the BootOption. If the EFI contexted has been | |
compromised this function will not return. | |
@param This Protocol instance pointer. | |
@param BbsDevicePath EFI Device Path from BootXXXX variable. | |
@param LoadOptionsSize Size of LoadOption in size. | |
@param LoadOptions LoadOption from BootXXXX variable | |
@retval EFI_SUCCESS Removable media not present | |
**/ | |
EFI_STATUS | |
EFIAPI | |
LegacyBiosLegacyBoot ( | |
IN EFI_LEGACY_BIOS_PROTOCOL *This, | |
IN BBS_BBS_DEVICE_PATH *BbsDevicePath, | |
IN UINT32 LoadOptionsSize, | |
IN VOID *LoadOptions | |
) | |
{ | |
return EFI_UNSUPPORTED; | |
} | |
/** | |
Build the E820 table. | |
@param Private Legacy BIOS Instance data | |
@param Size Size of E820 Table | |
@retval EFI_SUCCESS It should always work. | |
**/ | |
EFI_STATUS | |
LegacyBiosBuildE820 ( | |
IN LEGACY_BIOS_INSTANCE *Private, | |
OUT UINTN *Size | |
) | |
{ | |
*Size = 0; | |
return EFI_SUCCESS; | |
} | |
/** | |
Get all BBS info | |
@param This Protocol instance pointer. | |
@param HddCount Number of HDD_INFO structures | |
@param HddInfo Onboard IDE controller information | |
@param BbsCount Number of BBS_TABLE structures | |
@param BbsTable List BBS entries | |
@retval EFI_SUCCESS Tables returned | |
@retval EFI_NOT_FOUND resource not found | |
@retval EFI_DEVICE_ERROR can not get BBS table | |
**/ | |
EFI_STATUS | |
EFIAPI | |
LegacyBiosGetBbsInfo ( | |
IN EFI_LEGACY_BIOS_PROTOCOL *This, | |
OUT UINT16 *HddCount, | |
OUT HDD_INFO **HddInfo, | |
OUT UINT16 *BbsCount, | |
OUT BBS_TABLE **BbsTable | |
) | |
{ | |
return EFI_UNSUPPORTED; | |
} | |
/** | |
Fill in the standard BDA for Keyboard LEDs | |
@param This Protocol instance pointer. | |
@param Leds Current LED status | |
@retval EFI_SUCCESS It should always work. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
LegacyBiosUpdateKeyboardLedStatus ( | |
IN EFI_LEGACY_BIOS_PROTOCOL *This, | |
IN UINT8 Leds | |
) | |
{ | |
return EFI_UNSUPPORTED; | |
} | |
/** | |
Relocate this image under 4G memory for IPF. | |
@param ImageHandle Handle of driver image. | |
@param SystemTable Pointer to system table. | |
@retval EFI_SUCCESS Image successfully relocated. | |
@retval EFI_ABORTED Failed to relocate image. | |
**/ | |
EFI_STATUS | |
RelocateImageUnder4GIfNeeded ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
EFI_STATUS Status; | |
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage; | |
UINTN NumberOfPages; | |
EFI_PHYSICAL_ADDRESS LoadedImageBase; | |
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext; | |
EFI_PHYSICAL_ADDRESS MemoryAddress; | |
EFI_HANDLE NewImageHandle; | |
Status = gBS->HandleProtocol ( | |
ImageHandle, | |
&gEfiLoadedImageProtocolGuid, | |
(VOID *) &LoadedImage | |
); | |
if (!EFI_ERROR (Status)) { | |
LoadedImageBase = (EFI_PHYSICAL_ADDRESS) (UINTN) LoadedImage->ImageBase; | |
if (LoadedImageBase > 0xffffffff) { | |
NumberOfPages = (UINTN) (DivU64x32(LoadedImage->ImageSize, EFI_PAGE_SIZE) + 1); | |
// | |
// Allocate buffer below 4GB here | |
// | |
Status = AllocateLegacyMemory ( | |
AllocateMaxAddress, | |
0x7FFFFFFF, | |
NumberOfPages, // do we have to convert this to pages?? | |
&MemoryAddress | |
); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
ZeroMem (&ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT)); | |
ImageContext.Handle = (VOID *)(UINTN)LoadedImageBase; | |
ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory; | |
// | |
// Get information about the image being loaded | |
// | |
Status = PeCoffLoaderGetImageInfo (&ImageContext); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
ImageContext.ImageAddress = (PHYSICAL_ADDRESS)MemoryAddress; | |
// | |
// Align buffer on section boundry | |
// | |
ImageContext.ImageAddress += ImageContext.SectionAlignment - 1; | |
ImageContext.ImageAddress &= ~((PHYSICAL_ADDRESS)ImageContext.SectionAlignment - 1); | |
// | |
// Load the image to our new buffer | |
// | |
Status = PeCoffLoaderLoadImage (&ImageContext); | |
if (EFI_ERROR (Status)) { | |
gBS->FreePages (MemoryAddress, NumberOfPages); | |
return Status; | |
} | |
// | |
// Relocate the image in our new buffer | |
// | |
Status = PeCoffLoaderRelocateImage (&ImageContext); | |
if (EFI_ERROR (Status)) { | |
gBS->FreePages (MemoryAddress, NumberOfPages); | |
return Status; | |
} | |
// | |
// Create a new handle with gEfiCallerIdGuid to be used as the ImageHandle fore the reloaded image | |
// | |
NewImageHandle = NULL; | |
Status = gBS->InstallProtocolInterface ( | |
&NewImageHandle, | |
&gEfiCallerIdGuid, | |
EFI_NATIVE_INTERFACE, | |
NULL | |
); | |
// | |
// Flush the instruction cache so the image data is written before we execute it | |
// | |
InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize); | |
Status = ((EFI_IMAGE_ENTRY_POINT)(UINTN)(ImageContext.EntryPoint)) (NewImageHandle, SystemTable); | |
if (EFI_ERROR (Status)) { | |
gBS->FreePages (MemoryAddress, NumberOfPages); | |
return Status; | |
} | |
// | |
// return error directly the BS will unload this image | |
// | |
return EFI_ABORTED; | |
} | |
} | |
return EFI_SUCCESS; | |
} |