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/*++
Copyright (c) 2006, 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
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.
Module Name:
EsalServiceLib.c
Abstract:
--*/
#include <Ipf/IpfDefines.h>
STATIC EXTENDED_SAL_BOOT_SERVICE_PROTOCOL *mEsalBootService;
EFI_STATUS
EFIAPI
DxeSalLibConstruct (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
Status = gBS->LocateProtocol (&gEfiExtendedSalBootServiceProtocolGuid, NULL, &mEsalBootService);
ASSERT_EFI_ERROR (Status);
return Status;
}
EFI_STATUS
EFIAPI
RegisterEsalFunction (
IN UINT64 FunctionId,
IN EFI_GUID *ClassGuid,
IN SAL_INTERNAL_EXTENDED_SAL_PROC Function,
IN VOID *ModuleGlobal
)
/*++
Routine Description:
Register ESAL Class Function and it's asociated global.
This function is boot service only!
Arguments:
FunctionId - ID of function to register
ClassGuid - GUID of function class
Function - Function to register under ClassGuid/FunctionId pair
ModuleGlobal - Module global for Function.
Returns:
EFI_SUCCESS - If ClassGuid/FunctionId Function was registered.
--*/
{
return mEsalBootService->AddExtendedSalProc (
mEsalBootService,
ClassGuid,
FunctionId,
Function,
ModuleGlobal
);
}
EFI_STATUS
EFIAPI
RegisterEsalClass (
IN EFI_GUID *ClassGuid,
IN VOID *ModuleGlobal,
...
)
/*++
Routine Description:
Register ESAL Class and it's asociated global.
This function is boot service only!
Arguments:
ClassGuid - GUID of function class
ModuleGlobal - Module global for Function.
... - SAL_INTERNAL_EXTENDED_SAL_PROC and FunctionId pairs. NULL
indicates the end of the list.
Returns:
EFI_SUCCESS - All members of ClassGuid registered
--*/
{
VA_LIST Args;
EFI_STATUS Status;
SAL_INTERNAL_EXTENDED_SAL_PROC Function;
UINT64 FunctionId;
EFI_HANDLE NewHandle;
VA_START (Args, ModuleGlobal);
Status = EFI_SUCCESS;
while (!EFI_ERROR (Status)) {
Function = (SAL_INTERNAL_EXTENDED_SAL_PROC) VA_ARG (Args, SAL_INTERNAL_EXTENDED_SAL_PROC);
if (Function == NULL) {
break;
}
FunctionId = VA_ARG (Args, UINT64);
Status = RegisterEsalFunction (FunctionId, ClassGuid, Function, ModuleGlobal);
}
if (EFI_ERROR (Status)) {
return Status;
}
NewHandle = NULL;
return gBS->InstallProtocolInterface (
&NewHandle,
ClassGuid,
EFI_NATIVE_INTERFACE,
NULL
);
}
SAL_RETURN_REGS
EFIAPI
EfiCallEsalService (
IN EFI_GUID *ClassGuid,
IN UINT64 FunctionId,
IN UINT64 Arg2,
IN UINT64 Arg3,
IN UINT64 Arg4,
IN UINT64 Arg5,
IN UINT64 Arg6,
IN UINT64 Arg7,
IN UINT64 Arg8
)
/*++
Routine Description:
Call module that is not linked direclty to this module. This code is IP
relative and hides the binding issues of virtual or physical calling. The
function that gets dispatched has extra arguments that include the registered
module global and a boolean flag to indicate if the system is in virutal mode.
Arguments:
ClassGuid - GUID of function
FunctionId - Function in ClassGuid to call
Arg2 - Argument 2 ClassGuid/FunctionId defined
Arg3 - Argument 3 ClassGuid/FunctionId defined
Arg4 - Argument 4 ClassGuid/FunctionId defined
Arg5 - Argument 5 ClassGuid/FunctionId defined
Arg6 - Argument 6 ClassGuid/FunctionId defined
Arg7 - Argument 7 ClassGuid/FunctionId defined
Arg8 - Argument 8 ClassGuid/FunctionId defined
Returns:
Status of ClassGuid/FuncitonId
--*/
{
SAL_RETURN_REGS ReturnReg;
SAL_EXTENDED_SAL_PROC EsalProc;
ReturnReg = GetEsalEntryPoint ();
if (ReturnReg.Status != EFI_SAL_SUCCESS) {
return ReturnReg;
}
if (ReturnReg.r11 & PSR_IT_MASK) {
//
// Virtual mode plabel to entry point
//
EsalProc = (SAL_EXTENDED_SAL_PROC) ReturnReg.r10;
} else {
//
// Physical mode plabel to entry point
//
EsalProc = (SAL_EXTENDED_SAL_PROC) ReturnReg.r9;
}
return EsalProc (
ClassGuid,
FunctionId,
Arg2,
Arg3,
Arg4,
Arg5,
Arg6,
Arg7,
Arg8
);
}
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