tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
audk/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveState.../ScriptSave.c

941 lines
30 KiB
C
Raw Blame History

/** @file
Implementation for S3 Boot Script Save thunk driver.
This thunk driver consumes PI S3SaveState protocol to produce framework S3BootScriptSave Protocol
Copyright (c) 2010 - 2012, 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 "ScriptSave.h"
EFI_HANDLE mHandle;
EFI_BOOT_SCRIPT_SAVE_PROTOCOL mS3ScriptSave = {
BootScriptWrite,
BootScriptCloseTable
};
EFI_S3_SAVE_STATE_PROTOCOL *mS3SaveState;
/**
Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to
long mode.
@param Function The 32bit code entry to be executed.
@param Param1 The first parameter to pass to 32bit code
@param Param2 The second parameter to pass to 32bit code
@retval EFI_SUCCESS Execute 32bit code successfully.
@retval other Something wrong when execute the 32bit code
**/
EFI_STATUS
Execute32BitCode (
IN UINT64 Function,
IN UINT64 Param1,
IN UINT64 Param2
);
/**
A stub to convert framework boot script dispatch to PI boot script dispatch.
@param ImageHandle It should be is NULL.
@param Context The first parameter to pass to 32bit code
@return dispatch value.
**/
EFI_STATUS
EFIAPI
FrameworkBootScriptDispatchStub (
IN EFI_HANDLE ImageHandle,
IN VOID *Context
)
{
EFI_STATUS Status;
DISPATCH_ENTRYPOINT_FUNC EntryFunc;
VOID *PeiServices;
IA32_DESCRIPTOR Idtr;
DEBUG ((EFI_D_ERROR, "FrameworkBootScriptDispatchStub - 0x%08x\n", (UINTN)Context));
EntryFunc = (DISPATCH_ENTRYPOINT_FUNC) (UINTN) (Context);
AsmReadIdtr (&Idtr);
PeiServices = (VOID *)(UINTN)(*(UINT32 *)(Idtr.Base - sizeof (UINT32)));
//
// ECP assumes first parameter is NULL, and second parameter is PeiServices.
//
Status = Execute32BitCode ((UINT64)(UINTN)EntryFunc, 0, (UINT64)(UINTN)PeiServices);
return Status;
}
/**
Internal function to add IO write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptIoWrite (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINTN Count;
UINT8 *Buffer;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Count = VA_ARG (Marker, UINTN);
Buffer = VA_ARG (Marker, UINT8 *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_IO_WRITE_OPCODE,
Width,
Address,
Count,
Buffer
);
}
/**
Internal function to add IO read/write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptIoReadWrite (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINT8 *Data;
UINT8 *DataMask;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Data = VA_ARG (Marker, UINT8 *);
DataMask = VA_ARG (Marker, UINT8 *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_IO_READ_WRITE_OPCODE,
Width,
Address,
Data,
DataMask
);
}
/**
Internal function to add memory write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptMemWrite (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINTN Count;
UINT8 *Buffer;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Count = VA_ARG (Marker, UINTN);
Buffer = VA_ARG (Marker, UINT8 *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_MEM_WRITE_OPCODE,
Width,
Address,
Count,
Buffer
);
}
/**
Internal function to add memory read/write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptMemReadWrite (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINT8 *Data;
UINT8 *DataMask;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Data = VA_ARG (Marker, UINT8 *);
DataMask = VA_ARG (Marker, UINT8 *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_MEM_READ_WRITE_OPCODE,
Width,
Address,
Data,
DataMask
);
}
/**
Internal function to add PciCfg write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptPciCfgWrite (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINTN Count;
UINT8 *Buffer;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Count = VA_ARG (Marker, UINTN);
Buffer = VA_ARG (Marker, UINT8 *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE_OPCODE,
Width,
Address,
Count,
Buffer
);
}
/**
Internal function to PciCfg read/write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptPciCfgReadWrite (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINT8 *Data;
UINT8 *DataMask;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Data = VA_ARG (Marker, UINT8 *);
DataMask = VA_ARG (Marker, UINT8 *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE_OPCODE,
Width,
Address,
Data,
DataMask
);
}
/**
Internal function to add PciCfg2 write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptPciCfg2Write (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINTN Count;
UINT8 *Buffer;
UINT16 Segment;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Count = VA_ARG (Marker, UINTN);
Buffer = VA_ARG (Marker, UINT8 *);
Segment = VA_ARG (Marker, UINT16);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE_OPCODE,
Width,
Segment,
Address,
Count,
Buffer
);
}
/**
Internal function to PciCfg2 read/write opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptPciCfg2ReadWrite (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT16 Segment;
UINT64 Address;
UINT8 *Data;
UINT8 *DataMask;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
Segment = VA_ARG (Marker, UINT16);
Data = VA_ARG (Marker, UINT8 *);
DataMask = VA_ARG (Marker, UINT8 *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE_OPCODE,
Width,
Segment,
Address,
Data,
DataMask
);
}
/**
Internal function to add smbus excute opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptSmbusExecute (
IN VA_LIST Marker
)
{
EFI_SMBUS_DEVICE_ADDRESS SlaveAddress;
EFI_SMBUS_DEVICE_COMMAND Command;
EFI_SMBUS_OPERATION Operation;
BOOLEAN PecCheck;
VOID *Buffer;
UINTN *DataSize;
SlaveAddress.SmbusDeviceAddress = VA_ARG (Marker, UINTN);
Command = VA_ARG (Marker, EFI_SMBUS_DEVICE_COMMAND);
Operation = VA_ARG (Marker, EFI_SMBUS_OPERATION);
PecCheck = VA_ARG (Marker, BOOLEAN);
DataSize = VA_ARG (Marker, UINTN *);
Buffer = VA_ARG (Marker, VOID *);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_SMBUS_EXECUTE_OPCODE,
SlaveAddress,
Command,
Operation,
PecCheck,
DataSize,
Buffer
);
}
/**
Internal function to add stall opcode to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptStall (
IN VA_LIST Marker
)
{
UINT32 Duration;
Duration = VA_ARG (Marker, UINT32);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_STALL_OPCODE,
Duration
);
}
/**
Internal function to add Save jmp address according to DISPATCH_OPCODE.
We ignore "Context" parameter
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptDispatch (
IN VA_LIST Marker
)
{
VOID *EntryPoint;
EntryPoint = (VOID*)(UINTN)VA_ARG (Marker, EFI_PHYSICAL_ADDRESS);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_DISPATCH_OPCODE,
EntryPoint
);
}
/**
Internal function to add Save jmp address according to DISPATCH_OPCODE.
We ignore "Context" parameter.
We need create thunk stub to convert PEI entrypoint (used in Framework version)
to DXE entrypoint (defined in PI spec).
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
FrameworkBootScriptDispatch (
IN VA_LIST Marker
)
{
VOID *EntryPoint;
VOID *Context;
EntryPoint = (VOID*)(UINTN)VA_ARG (Marker, EFI_PHYSICAL_ADDRESS);
//
// Register callback
//
Context = EntryPoint;
EntryPoint = (VOID *)(UINTN)FrameworkBootScriptDispatchStub;
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_DISPATCH_2_OPCODE,
EntryPoint,
Context
);
}
/**
Internal function to add memory pool operation to the table.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptMemPoll (
IN VA_LIST Marker
)
{
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINT8 *BitMask;
UINT8 *BitValue;
UINT64 Duration;
UINT64 LoopTimes;
UINT64 Delay;
Width = VA_ARG (Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG (Marker, UINT64);
BitMask = VA_ARG (Marker, UINT8 *);
BitValue = VA_ARG (Marker, UINT8 *);
Duration = (UINT64)VA_ARG (Marker, UINT64);
LoopTimes = (UINT64)VA_ARG (Marker, UINT64);
//
// Framework version: Duration is used for Stall(), which is Microseconds.
// Total time is: Duration(Microseconds) * LoopTimes.
// PI version: Duration is always 100ns. Delay is LoopTimes.
// Total time is: 100ns * Delay.
// So Delay = Duration(Microseconds) * LoopTimes / 100ns
// = Duration * 1000ns * LoopTimes / 100ns
// = Duration * 10 * LoopTimes
//
Delay = MultU64x64 (MultU64x32 (Duration, 10), LoopTimes);
//
// Framework version: First BitMask, then BitValue
// PI version: First Data, then DataMask
// So we revert their order in function call
//
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_MEM_POLL_OPCODE,
Width,
Address,
BitValue,
BitMask,
Delay
);
}
/**
Internal function to add Save jmp address according to DISPATCH_OPCODE2.
The "Context" parameter is not ignored.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enough resource to do operation.
@retval EFI_SUCCESS Opcode is added.
**/
EFI_STATUS
BootScriptDispatch2 (
IN VA_LIST Marker
)
{
VOID *EntryPoint;
VOID *Context;
EntryPoint = (VOID*)(UINTN)VA_ARG (Marker, EFI_PHYSICAL_ADDRESS);
Context = (VOID*)(UINTN)VA_ARG (Marker, EFI_PHYSICAL_ADDRESS);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_DISPATCH_2_OPCODE,
EntryPoint,
Context
);
}
/**
Internal function to add the opcode link node to the link
list.
@param Marker The variable argument list to get the opcode
and associated attributes.
@retval EFI_OUT_OF_RESOURCES Not enought resource to complete the operations.
@retval EFI_SUCCESS The opcode entry is added to the link list
successfully.
**/
EFI_STATUS
BootScriptInformation (
IN VA_LIST Marker
)
{
UINT32 InformationLength;
EFI_PHYSICAL_ADDRESS Information;
InformationLength = VA_ARG (Marker, UINT32);
Information = VA_ARG (Marker, EFI_PHYSICAL_ADDRESS);
return mS3SaveState->Write (
mS3SaveState,
EFI_BOOT_SCRIPT_INFORMATION_OPCODE,
InformationLength,
(VOID*)(UINTN)Information
);
}
/**
Adds a record into a specified Framework boot script table.
This function is used to store a boot script record into a given boot
script table. If the table specified by TableName is nonexistent in the
system, a new table will automatically be created and then the script record
will be added into the new table. A boot script table can add new script records
until EFI_BOOT_SCRIPT_SAVE_PROTOCOL.CloseTable() is called. Currently, the only
meaningful table name is EFI_ACPI_S3_RESUME_SCRIPT_TABLE. This function is
responsible for allocating necessary memory for the script.
This function has a variable parameter list. The exact parameter list depends on
the OpCode that is passed into the function. If an unsupported OpCode or illegal
parameter list is passed in, this function returns EFI_INVALID_PARAMETER.
If there are not enough resources available for storing more scripts, this function returns
EFI_OUT_OF_RESOURCES.
@param This A pointer to the EFI_BOOT_SCRIPT_SAVE_PROTOCOL instance.
@param TableName Name of the script table. Currently, the only meaningful value is
EFI_ACPI_S3_RESUME_SCRIPT_TABLE.
@param OpCode The operation code (opcode) number.
@param ... Argument list that is specific to each opcode.
@retval EFI_SUCCESS The operation succeeded. A record was added into the
specified script table.
@retval EFI_INVALID_PARAMETER The parameter is illegal or the given boot script is not supported.
If the opcode is unknow or not supported because of the PCD
Feature Flags.
@retval EFI_OUT_OF_RESOURCES There is insufficient memory to store the boot script.
**/
EFI_STATUS
EFIAPI
BootScriptWrite (
IN EFI_BOOT_SCRIPT_SAVE_PROTOCOL *This,
IN UINT16 TableName,
IN UINT16 OpCode,
...
)
{
EFI_STATUS Status;
VA_LIST Marker;
if (TableName != FRAMEWORK_EFI_ACPI_S3_RESUME_SCRIPT_TABLE) {
//
// Only S3 boot script is supported for now
//
return EFI_OUT_OF_RESOURCES;
}
//
// Build script according to opcode
//
switch (OpCode) {
case EFI_BOOT_SCRIPT_IO_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptIoWrite (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_IO_READ_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptIoReadWrite (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_MEM_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptMemWrite (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_MEM_READ_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptMemReadWrite (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptPciCfgWrite (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptPciCfgReadWrite (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_SMBUS_EXECUTE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptSmbusExecute (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_STALL_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptStall (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_DISPATCH_OPCODE:
VA_START (Marker, OpCode);
Status = FrameworkBootScriptDispatch (Marker);
VA_END (Marker);
break;
case FRAMEWORK_EFI_BOOT_SCRIPT_DISPATCH_2_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptDispatch2 (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_INFORMATION_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptInformation (Marker);
VA_END (Marker);
break;
case FRAMEWORK_EFI_BOOT_SCRIPT_MEM_POLL_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptMemPoll (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptPciCfg2Write (Marker);
VA_END (Marker);
break;
case EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE_OPCODE:
VA_START (Marker, OpCode);
Status = BootScriptPciCfg2ReadWrite (Marker);
VA_END (Marker);
break;
default:
Status = EFI_INVALID_PARAMETER;
break;
}
return Status;
}
/**
Closes the specified script table.
This function closes the specified boot script table and returns the base address
of the table. It allocates a new pool to duplicate all the boot scripts in the specified
table. Once this function is called, the specified table will be destroyed after it is
copied into the allocated pool. As a result, any attempts to add a script record into a
closed table will cause a new table to be created. The base address of the allocated pool
will be returned in Address. After using the boot script table, the caller is responsible
for freeing the pool that is allocated by this function. If the boot script table,
such as EFI_ACPI_S3_RESUME_SCRIPT_TABLE, is required to be stored in a nonperturbed
memory region, the caller should copy the table into the nonperturbed memory region by itself.
@param This A pointer to the EFI_BOOT_SCRIPT_SAVE_PROTOCOL instance.
@param TableName Name of the script table. Currently, the only meaningful value is
EFI_ACPI_S3_RESUME_SCRIPT_TABLE.
@param Address A pointer to the physical address where the table begins.
@retval EFI_SUCCESS The table was successfully returned.
@retval EFI_NOT_FOUND The specified table was not created previously.
@retval EFI_OUT_OF_RESOURCE Memory is insufficient to hold the reorganized boot script table.
@retval EFI_UNSUPPORTED the table type is not EFI_ACPI_S3_RESUME_SCRIPT_TABLE
**/
EFI_STATUS
EFIAPI
BootScriptCloseTable (
IN EFI_BOOT_SCRIPT_SAVE_PROTOCOL *This,
IN UINT16 TableName,
OUT EFI_PHYSICAL_ADDRESS *Address
)
{
if (TableName != FRAMEWORK_EFI_ACPI_S3_RESUME_SCRIPT_TABLE) {
//
// Only S3 boot script is supported for now
//
return EFI_NOT_FOUND;
}
//
// Here the close table is not implemented.
//
return EFI_UNSUPPORTED;
}
/**
This routine is entry point of ScriptSave driver.
@param ImageHandle Handle for this drivers loaded image protocol.
@param SystemTable EFI system table.
@retval EFI_OUT_OF_RESOURCES No enough resource
@retval EFI_SUCCESS Succesfully installed the ScriptSave driver.
@retval other Errors occured.
**/
EFI_STATUS
EFIAPI
InitializeScriptSaveOnS3SaveState (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
UINT8 *Buffer;
UINTN BufferSize;
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
BOOT_SCRIPT_THUNK_DATA *BootScriptThunkData;
EFI_STATUS Status;
VOID *DevicePath;
EFI_PHYSICAL_ADDRESS MemoryAddress;
UINTN PageNumber;
EFI_HANDLE NewImageHandle;
//
// Test if the gEfiCallerIdGuid of this image is already installed. if not, the entry
// point is loaded by DXE code which is the first time loaded. or else, it is already
// be reloaded be itself.This is a work-around
//
Status = gBS->LocateProtocol (&gEfiCallerIdGuid, NULL, &DevicePath);
if (EFI_ERROR (Status)) {
//
// This is the first-time loaded by DXE core. reload itself to RESERVED mem
//
//
// A workaround: Here we install a dummy handle
//
NewImageHandle = NULL;
Status = gBS->InstallProtocolInterface (
&NewImageHandle,
&gEfiCallerIdGuid,
EFI_NATIVE_INTERFACE,
NULL
);
ASSERT_EFI_ERROR (Status);
Status = GetSectionFromAnyFv (
&gEfiCallerIdGuid,
EFI_SECTION_PE32,
0,
(VOID **) &Buffer,
&BufferSize
);
ASSERT_EFI_ERROR (Status);
ImageContext.Handle = Buffer;
ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;
//
// Get information about the image being loaded
//
Status = PeCoffLoaderGetImageInfo (&ImageContext);
ASSERT_EFI_ERROR (Status);
MemoryAddress = SIZE_4GB - 1;
PageNumber = EFI_SIZE_TO_PAGES (BufferSize + ImageContext.SectionAlignment);
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiReservedMemoryType,
PageNumber,
&MemoryAddress
);
ASSERT_EFI_ERROR (Status);
ImageContext.ImageAddress = (PHYSICAL_ADDRESS)(UINTN)MemoryAddress;
//
// Align buffer on section boundry
//
ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;
ImageContext.ImageAddress &= ~(ImageContext.SectionAlignment - 1);
//
// Load the image to our new buffer
//
Status = PeCoffLoaderLoadImage (&ImageContext);
ASSERT_EFI_ERROR (Status);
//
// Relocate the image in our new buffer
//
Status = PeCoffLoaderRelocateImage (&ImageContext);
ASSERT_EFI_ERROR (Status);
//
// Free the buffer allocated by ReadSection since the image has been relocated in the new buffer
//
gBS->FreePool (Buffer);
//
// 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);
ASSERT_EFI_ERROR (Status);
//
// Additional step for BootScriptThunk integrity
//
//
// Allocate BootScriptThunkData
//
BootScriptThunkData = AllocatePool (sizeof (BOOT_SCRIPT_THUNK_DATA));
ASSERT (BootScriptThunkData != NULL);
BootScriptThunkData->BootScriptThunkBase = ImageContext.ImageAddress;
BootScriptThunkData->BootScriptThunkLength = ImageContext.ImageSize;
//
// Set BootScriptThunkData
//
PcdSet64 (BootScriptThunkDataPtr, (UINT64)(UINTN)BootScriptThunkData);
return EFI_SUCCESS;
} else {
//
// the entry point is invoked after reloading. following code only run in RESERVED mem
//
//
// Locate and cache PI S3 Save State Protocol.
//
Status = gBS->LocateProtocol (
&gEfiS3SaveStateProtocolGuid,
NULL,
(VOID **) &mS3SaveState
);
ASSERT_EFI_ERROR (Status);
return gBS->InstallProtocolInterface (
&mHandle,
&gEfiBootScriptSaveProtocolGuid,
EFI_NATIVE_INTERFACE,
&mS3ScriptSave
);
}
}
Reference in New Issue View Git Blame Copy Permalink