mirror of https://github.com/acidanthera/audk.git
535 lines
11 KiB
C
535 lines
11 KiB
C
/** @file
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Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiPei.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PcdLib.h>
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#include <FspGlobalData.h>
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#include <FspEas.h>
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#include <Library/FspSwitchStackLib.h>
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#pragma pack(1)
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//
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// API Parameter +0x34
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// API return address +0x30
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//
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// push FspInfoHeader +0x2C
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// pushfd +0x28
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// cli
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// pushad +0x24
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// sub esp, 8 +0x00
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// sidt fword ptr [esp]
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//
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typedef struct {
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UINT16 IdtrLimit;
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UINT32 IdtrBase;
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UINT16 Reserved;
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UINT32 Edi;
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UINT32 Esi;
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UINT32 Ebp;
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UINT32 Esp;
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UINT32 Ebx;
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UINT32 Edx;
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UINT32 Ecx;
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UINT32 Eax;
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UINT16 Flags[2];
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UINT32 FspInfoHeader;
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UINT32 ApiRet;
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UINT32 ApiParam[2];
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} CONTEXT_STACK;
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#define CONTEXT_STACK_OFFSET(x) (UINT32)&((CONTEXT_STACK *)(UINTN)0)->x
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#pragma pack()
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/**
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This function sets the FSP global data pointer.
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@param[in] FspData FSP global data pointer.
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**/
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VOID
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EFIAPI
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SetFspGlobalDataPointer (
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IN FSP_GLOBAL_DATA *FspData
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)
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{
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ASSERT (FspData != NULL);
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*((volatile UINT32 *)(UINTN)PcdGet32(PcdGlobalDataPointerAddress)) = (UINT32)(UINTN)FspData;
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}
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/**
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This function gets the FSP global data pointer.
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**/
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FSP_GLOBAL_DATA *
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EFIAPI
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GetFspGlobalDataPointer (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = *(FSP_GLOBAL_DATA **)(UINTN)PcdGet32(PcdGlobalDataPointerAddress);
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return FspData;
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}
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/**
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This function gets back the FSP API first parameter passed by the bootlaoder.
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@retval ApiParameter FSP API first parameter passed by the bootlaoder.
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**/
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UINT32
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EFIAPI
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GetFspApiParameter (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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return *(UINT32 *)(UINTN)(FspData->CoreStack + CONTEXT_STACK_OFFSET(ApiParam[0]));
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}
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/**
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This function gets back the FSP API second parameter passed by the bootlaoder.
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@retval ApiParameter FSP API second parameter passed by the bootlaoder.
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**/
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UINT32
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EFIAPI
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GetFspApiParameter2 (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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return *(UINT32 *)(UINTN)(FspData->CoreStack + CONTEXT_STACK_OFFSET(ApiParam[1]));
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}
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/**
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This function sets the FSP API parameter in the stack.
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@param[in] Value New parameter value.
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**/
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VOID
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EFIAPI
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SetFspApiParameter (
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IN UINT32 Value
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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*(UINT32 *)(UINTN)(FspData->CoreStack + CONTEXT_STACK_OFFSET(ApiParam)) = Value;
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}
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/**
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This function set the API status code returned to the BootLoader.
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@param[in] ReturnStatus Status code to return.
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**/
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VOID
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EFIAPI
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SetFspApiReturnStatus (
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IN UINT32 ReturnStatus
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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*(UINT32 *)(UINTN)(FspData->CoreStack + CONTEXT_STACK_OFFSET(Eax)) = ReturnStatus;
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}
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/**
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This function sets the context switching stack to a new stack frame.
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@param[in] NewStackTop New core stack to be set.
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**/
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VOID
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EFIAPI
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SetFspCoreStackPointer (
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IN VOID *NewStackTop
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)
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{
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FSP_GLOBAL_DATA *FspData;
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UINT32 *OldStack;
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UINT32 *NewStack;
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UINT32 StackContextLen;
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FspData = GetFspGlobalDataPointer ();
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StackContextLen = sizeof(CONTEXT_STACK) / sizeof(UINT32);
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//
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// Reserve space for the ContinuationFunc two parameters
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//
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OldStack = (UINT32 *)FspData->CoreStack;
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NewStack = (UINT32 *)NewStackTop - StackContextLen - 2;
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FspData->CoreStack = (UINT32)NewStack;
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while (StackContextLen-- != 0) {
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*NewStack++ = *OldStack++;
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}
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}
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/**
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This function sets the platform specific data pointer.
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@param[in] PlatformData FSP platform specific data pointer.
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**/
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VOID
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EFIAPI
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SetFspPlatformDataPointer (
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IN VOID *PlatformData
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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FspData->PlatformData.DataPtr = PlatformData;
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}
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/**
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This function gets the platform specific data pointer.
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@param[in] PlatformData FSP platform specific data pointer.
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**/
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VOID *
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EFIAPI
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GetFspPlatformDataPointer (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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return FspData->PlatformData.DataPtr;
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}
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/**
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This function sets the UPD data pointer.
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@param[in] UpdDataPtr UPD data pointer.
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**/
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VOID
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EFIAPI
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SetFspUpdDataPointer (
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IN VOID *UpdDataPtr
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)
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{
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FSP_GLOBAL_DATA *FspData;
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//
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// Get the FSP Global Data Pointer
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//
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FspData = GetFspGlobalDataPointer ();
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//
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// Set the UPD pointer.
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//
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FspData->UpdDataPtr = UpdDataPtr;
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}
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/**
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This function gets the UPD data pointer.
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@return UpdDataPtr UPD data pointer.
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**/
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VOID *
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EFIAPI
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GetFspUpdDataPointer (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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return FspData->UpdDataPtr;
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}
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/**
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This function sets the FspMemoryInit UPD data pointer.
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@param[in] MemoryInitUpdPtr FspMemoryInit UPD data pointer.
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**/
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VOID
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EFIAPI
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SetFspMemoryInitUpdDataPointer (
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IN VOID *MemoryInitUpdPtr
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)
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{
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FSP_GLOBAL_DATA *FspData;
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//
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// Get the FSP Global Data Pointer
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//
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FspData = GetFspGlobalDataPointer ();
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//
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// Set the FspMemoryInit UPD pointer.
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//
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FspData->MemoryInitUpdPtr = MemoryInitUpdPtr;
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}
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/**
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This function gets the FspMemoryInit UPD data pointer.
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@return FspMemoryInit UPD data pointer.
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**/
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VOID *
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EFIAPI
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GetFspMemoryInitUpdDataPointer (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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return FspData->MemoryInitUpdPtr;
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}
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/**
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This function sets the FspSiliconInit UPD data pointer.
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@param[in] SiliconInitUpdPtr FspSiliconInit UPD data pointer.
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**/
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VOID
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EFIAPI
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SetFspSiliconInitUpdDataPointer (
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IN VOID *SiliconInitUpdPtr
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)
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{
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FSP_GLOBAL_DATA *FspData;
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//
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// Get the FSP Global Data Pointer
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//
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FspData = GetFspGlobalDataPointer ();
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//
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// Set the FspSiliconInit UPD data pointer.
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//
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FspData->SiliconInitUpdPtr = SiliconInitUpdPtr;
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}
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/**
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This function gets the FspSiliconInit UPD data pointer.
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@return FspSiliconInit UPD data pointer.
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**/
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VOID *
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EFIAPI
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GetFspSiliconInitUpdDataPointer (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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return FspData->SiliconInitUpdPtr;
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}
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/**
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Set FSP measurement point timestamp.
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@param[in] Id Measurement point ID.
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@return performance timestamp.
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**/
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UINT64
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EFIAPI
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SetFspMeasurePoint (
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IN UINT8 Id
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)
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{
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FSP_GLOBAL_DATA *FspData;
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//
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// Bit [55: 0] will be the timestamp
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// Bit [63:56] will be the ID
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//
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FspData = GetFspGlobalDataPointer ();
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if (FspData->PerfIdx < sizeof(FspData->PerfData) / sizeof(FspData->PerfData[0])) {
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FspData->PerfData[FspData->PerfIdx] = AsmReadTsc ();
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((UINT8 *)(&FspData->PerfData[FspData->PerfIdx]))[7] = Id;
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}
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return FspData->PerfData[(FspData->PerfIdx)++];
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}
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/**
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This function gets the FSP info header pointer.
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@retval FspInfoHeader FSP info header pointer
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**/
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FSP_INFO_HEADER *
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EFIAPI
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GetFspInfoHeader (
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VOID
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)
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{
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return GetFspGlobalDataPointer()->FspInfoHeader;
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}
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/**
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This function sets the FSP info header pointer.
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@param[in] FspInfoHeader FSP info header pointer
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**/
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VOID
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EFIAPI
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SetFspInfoHeader (
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FSP_INFO_HEADER *FspInfoHeader
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)
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{
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GetFspGlobalDataPointer()->FspInfoHeader = FspInfoHeader;
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}
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/**
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This function gets the FSP info header pointer using the API stack context.
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@retval FspInfoHeader FSP info header pointer using the API stack context
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**/
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FSP_INFO_HEADER *
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EFIAPI
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GetFspInfoHeaderFromApiContext (
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VOID
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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return (FSP_INFO_HEADER *)(*(UINT32 *)(UINTN)(FspData->CoreStack + CONTEXT_STACK_OFFSET(FspInfoHeader)));
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}
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/**
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This function gets the CfgRegion data pointer.
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@return CfgRegion data pointer.
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**/
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VOID *
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EFIAPI
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GetFspCfgRegionDataPointer (
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VOID
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)
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{
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FSP_INFO_HEADER *FspInfoHeader;
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FspInfoHeader = GetFspInfoHeader ();
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return (VOID *)(FspInfoHeader->ImageBase + FspInfoHeader->CfgRegionOffset);
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}
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/**
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This function gets FSP API calling index.
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@retval API calling index
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**/
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UINT8
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EFIAPI
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GetFspApiCallingIndex (
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VOID
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)
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{
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return GetFspGlobalDataPointer()->ApiIdx;
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}
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/**
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This function sets FSP API calling mode.
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@param[in] Index API calling index
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**/
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VOID
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EFIAPI
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SetFspApiCallingIndex (
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UINT8 Index
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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FspData->ApiIdx = Index;
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}
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/**
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This function gets FSP Phase StatusCode.
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@retval StatusCode
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**/
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UINT32
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EFIAPI
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GetPhaseStatusCode (
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VOID
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)
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{
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return GetFspGlobalDataPointer()->StatusCode;
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}
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/**
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This function sets FSP Phase StatusCode.
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@param[in] Mode Phase StatusCode
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**/
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VOID
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EFIAPI
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SetPhaseStatusCode (
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UINT32 StatusCode
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)
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{
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FSP_GLOBAL_DATA *FspData;
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FspData = GetFspGlobalDataPointer ();
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FspData->StatusCode = StatusCode;
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}
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/**
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This function updates the return status of the FSP API with requested reset type and returns to Boot Loader.
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@param[in] FspResetType Reset type that needs to returned as API return status
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**/
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VOID
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EFIAPI
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FspApiReturnStatusReset (
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IN UINT32 FspResetType
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)
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{
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volatile BOOLEAN LoopUntilReset;
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LoopUntilReset = TRUE;
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DEBUG ((DEBUG_INFO, "FSP returning control to Bootloader with reset required return status %x\n",FspResetType));
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if (GetFspGlobalDataPointer ()->FspMode == FSP_IN_API_MODE) {
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///
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/// Below code is not an infinite loop.The control will go back to API calling function in BootLoader each time BootLoader
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/// calls the FSP API without honoring the reset request by FSP
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///
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do {
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SetFspApiReturnStatus ((EFI_STATUS)FspResetType);
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Pei2LoaderSwitchStack ();
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DEBUG ((DEBUG_ERROR, "!!!ERROR: FSP has requested BootLoader for reset. But BootLoader has not honored the reset\n"));
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DEBUG ((DEBUG_ERROR, "!!!ERROR: Please add support in BootLoader to honor the reset request from FSP\n"));
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} while (LoopUntilReset);
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}
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}
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