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diff --git a/Core/EM/CSM/thunk/x86/thunk.c b/Core/EM/CSM/thunk/x86/thunk.c
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@@ -0,0 +1,793 @@
+//**********************************************************************
+//**********************************************************************
+//** **
+//** (C)Copyright 1985-2010, American Megatrends, Inc. **
+//** **
+//** All Rights Reserved. **
+//** **
+//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
+//** **
+//** Phone: (770)-246-8600 **
+//** **
+//**********************************************************************
+//**********************************************************************
+
+//**********************************************************************
+// $Header: /Alaska/SOURCE/Modules/CSM/Generic/Thunk/x86/thunk.c 49 10/07/13 9:41a Olegi $
+//
+// $Revision: 49 $
+//
+// $Date: 10/07/13 9:41a $
+//**********************************************************************
+// Revision History
+// ----------------
+// $Log: /Alaska/SOURCE/Modules/CSM/Generic/Thunk/x86/thunk.c $
+//
+// 49 10/07/13 9:41a Olegi
+// Undone previous checkin related to EIP125856 as it is causing assert
+// during boot.
+//
+// 48 8/30/13 4:25a Srikantakumarp
+// [TAG] EIP125856
+// [Category] Bug Fix
+// [Severity] Normal
+// [Symptom] Assert came in SetKbcPresenceInMiscInfo() when FarCall86()
+// function is called first time in POST.
+// [RootCause] BiosLessThan1MB value is used in
+// SetKbcPresenceInMiscInfo(); and this has been initialized only after
+// the function 0 csm16 call.
+// [Solution] Returned from SetKbcPresenceInMiscInfo() if
+// BiosLessThan1MB value is not initialized.
+// [Files] thunk.c
+//
+// 47 9/12/12 1:45a Srikantakumarp
+// [TAG] EIP99561
+// [Category] Bug Fix
+// [Severity] Normal
+// [Symptom] KbcEmulation enabled in Int86 call but NO_KBC_PRESENT_BIT
+// bit not set properly.
+// [RootCause] Incase of INT86 , it directly calls the interrupt service
+// routine and it might be that the NO_KBC_PRESENT_BIT is not set
+// according to the KbcEmulation enabled or disabled.
+// [Solution] The NO_KBC_PRESENT_BIT is set according to the
+// KbcEmulation enabled or disabled before the call to thunk in Int86
+// function in thunk.c.
+// [Files] thunk.c
+//
+// 46 3/02/12 3:24a Rameshr
+// [TAG] EIP81041
+// [Category] Improvement
+// [Description] Re-entrance support for Farcall86 and Int86 protocol
+// function
+// [Files] thunk.c
+//
+// 45 10/19/11 3:31p Olegi
+// [TAG] EIP72642, 72645, 72810
+// [Category] Bug Fix
+// [Severity] Important
+// [Symptom] Adaptec x805 SAS Option ROM code hangs
+// [RootCause] Adaptec ROM has a code that directly access KBC during
+// INT handler. We did not have KBC emulation enabled for Int86 function.
+// [Solution] Added enabling KBC emulation in Int86 function.
+// [Files] thunk.c
+//
+// 44 9/29/11 11:00a Olegi
+// [TAG] EIP70382
+// [Category] Improvement
+// [Description] Clear keyboard status in BDA after FarCall86 execution.
+// [Files] thunk.c
+//
+// 43 12/14/10 4:46p Olegi
+// [TAG] EIP50111
+// [Category] Bug Fix
+// [Severity] Important
+// [Symptom] TPL asserts in some cases during LegacyBoot
+// [RootCause] TPL.C asserts during LocateHandleBuffer call executed
+// during LegacyBoot from FarCall86.
+// [Solution] removed a call GetPs2SimpleTextInProtocolInterface
+// execution during FarCall86. The existing handle of Ps2SimpleTextIn will
+// be used.
+// [Files] thunk.c
+//
+// 42 10/23/10 3:22p Olegi
+// Undone the changes related to moving TPL raising/lowering outside of
+// FarCall86. This made the IF to be active during thunk that caused
+// various problems.
+//
+// 41 8/17/10 2:26p Olegi
+// Reset PS/2 keyboard before legacy boot. EIP40711
+//
+// 40 7/25/10 2:43p Olegi
+// RaiseTPL/RestroreTPL are moved from FarCall86 to the ASM area.
+//
+// 39 7/19/10 4:44p Olegi
+//
+// 38 6/28/10 5:04p Olegi
+// EIP26277: Added a callback notification on
+// NonSmmEmul6064TrapProtocolGuid installation.
+//
+// 37 6/19/10 12:32p Olegi
+// Temporary undone the resolution for EIP26277 until the final resolution
+// is found. Current changes causes ASSERT due to LocateHandle is executed
+// on TPL_LEVEL_HIGH.
+//
+// 36 2/22/10 9:46a Olegi
+// Fixed the problem where some keys pressed on USB keyboard are lost
+// during the transition to OpROM. EIP26277
+//
+// 35 1/18/10 3:41a Rameshr
+// NumLock,Capslock,Scroll Lock LED's synced properly between EFI and
+// Legacy Mode.
+// EIP 27917
+//
+// 34 1/12/10 11:47a Olegi
+// Copyright message updated.
+//
+// 33 9/23/09 11:13a Olegi
+// Changed the global variable name according to the coding standard.
+//
+// 32 9/09/09 3:11p Davidd
+// Fixed hanging problem when USB is disabled by the newly added "USB
+// Support" setup question - EIP 25360
+//
+// 31 2/05/09 12:28p Olegi
+//
+// 30 2/04/09 5:30p Olegi
+// Several modifications in FarCall86:
+// - PIC SetMode is moved after raising TPL to highest level (cli)
+// - Set Pmode interrupt mask to FF before setting Rmode mask. That avoids
+// the problem where IVT is not yet set in real mode (before Func#0) and
+// some HW interrupt is pending.
+//
+// 29 11/13/08 10:00a Olegi
+// Reverse thunk implementation started.
+//
+// 28 11/07/08 4:04p Rameshraju
+// Removed unused code.
+//
+// 27 11/07/08 4:01p Rameshraju
+// BugFix- Sometime system hangs on S4 resume.
+// Fix Reason : If the Timer interrupt generates between CLI and Timer
+// Interrupt mask code, Next STI instruction try to services the Timer
+// interrupt.In this case before setting IVT system will hang
+// EIP:17401
+//
+// 26 6/12/08 8:14a Olegi
+// Modified FarCall86 to execute USB keyboard change mode code for CSM16
+// function #5 (EIP14051).
+//
+// 25 8/27/07 12:44p Olegi
+//
+// 23 6/28/07 4:14p Olegi
+//
+// 22 6/25/07 12:27p Olegi
+//
+// 21 6/18/07 5:54p Olegi
+//
+// 20 5/29/07 6:17p Olegi
+// Added UsbChangeEfiToLegacy call.
+//
+// 19 4/27/07 5:14p Olegi
+// CSM.CHM file preparation.
+//
+// 18 8/24/06 6:56p Felixp
+//
+// 17 8/24/06 6:55p Felixp
+// x64 support (warnings/errors fixed)
+//
+// 16 8/24/06 3:11p Felixp
+// Preliminary x64 support (work in progress)
+//
+// 15 7/28/06 4:45p Olegi
+//
+// 14 5/19/06 11:22p Felixp
+// Device Path code updated to use NEXT_NODE/NODE_LENGTH/SET_NODE_LENGTH
+// macros to remove direct access to the Length field
+//
+// 13 3/13/06 2:35p Felixp
+//
+// 12 10/13/05 6:19p Olegi
+// Added condition to a previous change.
+//
+// 11 10/11/05 4:20p Srinin
+// PS2 KBD reset function is called after CM16 function 2, 3 and 5 are
+// called.
+//
+// 10 8/25/05 10:28a Olegi
+// Previous changes undone - instead the vector base for the master 8259
+// is changed from 0x68 to 0x58; with this there is no need to preserve
+// and restore IVT.
+//
+// 8 3/04/05 1:47p Mandal
+//
+//**********************************************************************
+//<AMI_FHDR_START>
+//
+// Name: Thunk.c
+//
+// Description: 32/64 bit to 16 bit code thunk implementation
+//
+//<AMI_FHDR_END>
+//**********************************************************************
+
+#include <Protocol\DevicePath.h>
+#include <Protocol\LegacyBios.h>
+#include <Protocol\Legacy8259.h>
+#include <Protocol\SimpleTextin.h>
+#include <protocol\FirmwareVolume.h >
+#include <Ffs.h>
+#include "csm.h"
+#include <AmiDxeLib.h>
+#include "token.h"
+#if defined(AMIUSB_SUPPORT)
+#include <protocol\amiusbcontroller.h>
+#endif
+#include <Protocol\SimpleTextInEx.h>
+#include <Protocol\AmiKeycode.h>
+
+
+#pragma pack(1)
+typedef struct {
+ UINT16 Offset;
+ UINT16 Segment;
+} FAR_CALL_PTR_16;
+
+typedef struct {
+ UINT32 Stack;
+ UINT32 StackSize;
+} STACK;
+
+typedef struct {
+ FAR_CALL_PTR_16 FarCall;
+ EFI_IA32_REGISTER_SET Regs;
+ STACK Stack;
+ BOOLEAN isFarCall; //if false, then INT86.
+ UINT8 BiosInt;
+} THUNK_DATA;
+
+typedef struct _ACPI_PNPID {
+ UINT32 Signature :16;
+ UINT32 PnpID :16;
+} ACPI_PNPID;
+#pragma pack()
+
+
+#if defined(AMIUSB_SUPPORT)
+EFI_USB_PROTOCOL *gUsbProtocol = NULL;
+#endif
+AMI_EFIKEYCODE_PROTOCOL *pKeyCodeProtocol=NULL;
+
+EFI_SIMPLE_TEXT_INPUT_PROTOCOL *gPS2KBDInterface = NULL;
+EFI_GUID gCsmThunkGuid = {
+ 0xA08276EC,0xA0FE,0x4e06,0x86,0x70,0x38,0x53,0x36,0xC7,0xD0,0x93
+};
+
+EFI_LEGACY_8259_PROTOCOL *gLegacy8259;
+extern BIOS_INFO *CoreBiosInfo;
+
+UINTN gThunkAsmAddr;
+extern BOOLEAN gIsBootPrepared;
+BOOLEAN gInsideThunk = FALSE;
+
+EFI_STATUS GetPs2SimpleTextInProtocolInterface(
+ BIOS_INFO *This,
+ EFI_SIMPLE_TEXT_INPUT_PROTOCOL **PS2KBDInterface
+);
+
+//<AMI_PHDR_START>
+//---------------------------------------------------------------------------
+//
+// Name: SetKbcPresenceInMiscInfo
+//
+// Description: Updates CSM16_NO_KBC_PRESENT_BIT of MiscInfoAddress accordingly
+// by checking if the KbcEmulation is Enabled or Disabled.
+//
+// Input:
+//
+// Output:
+// EFI_STATUS
+//
+// Referrals:
+//
+//---------------------------------------------------------------------------
+//<AMI_PHDR_END>
+
+VOID SetKbcPresenceInMiscInfo()
+{
+ EFI_TO_COMPATIBILITY16_INIT_TABLE *Csm16InitTable;
+ LEGACY16_TO_EFI_DATA_TABLE_STRUC *Csm16Data;
+ UINT8 KbcSupport,KbcCheck=0;
+ EFI_STATUS Status;
+
+ //
+ // Retrieving the Data at MiscInfoAddress
+ //
+ Csm16InitTable = &CoreBiosInfo->Thunk->Csm16InitTable;
+ Csm16Data = (LEGACY16_TO_EFI_DATA_TABLE_STRUC*)(UINTN)Csm16InitTable->BiosLessThan1MB;
+
+ KbcCheck = *(UINT8*)(UINTN)Csm16Data->MiscInfoAddress;
+
+ //
+ // Setting/Resetting the CSM16_NO_KBC_PRESENT_BIT according to the KbcEmulation
+ //
+ KbcSupport = IoRead8(0x64);
+ if (KbcSupport != 0xff) {
+ KbcCheck &= ~(CSM16_NO_KBC_PRESENT_BIT);
+ }
+ else {
+ KbcCheck |= (CSM16_NO_KBC_PRESENT_BIT);
+ }
+ //
+ // Checking if the Data at MiscInfoAddress is already updated
+ //
+ if((*(UINT8*)(UINTN)Csm16Data->MiscInfoAddress) != KbcCheck){
+ //
+ // Checking if F0000 region is writable
+ //
+ *(UINT8*)(UINTN)Csm16Data->MiscInfoAddress = KbcCheck;
+
+ if((*(UINT8*)(UINTN)Csm16Data->MiscInfoAddress) == KbcCheck){
+ return;
+ }
+ else{
+ //
+ // Unlocking the region 0xE0000 - 0xFFFFF
+ //
+ Status = CoreBiosInfo->iRegion->UnLock (CoreBiosInfo->iRegion,
+ 0xE0000,
+ 0x20000,
+ NULL);
+ ASSERT_EFI_ERROR(Status);
+
+ //
+ // Updating the Data at MiscInfoAddress
+ //
+ *(UINT8*)(UINTN)Csm16Data->MiscInfoAddress = KbcCheck;
+
+ //
+ // Locking the region 0xE0000 - 0xFFFFF
+ //
+ CoreBiosInfo->iRegion->Lock (CoreBiosInfo->iRegion,
+ 0xE0000,
+ 0x20000,
+ NULL);
+ }
+ }
+}
+
+//<AMI_PHDR_START>
+//---------------------------------------------------------------------------
+//
+// Name: Int86
+//
+// Description: Executes BIOS interrupt routine
+//
+// Input:
+// LegacyBios protocol instance pointer
+// BiosInt Interrupt number
+// Regs CPU register values to pass to the interrupt handler
+//
+// Output:
+// TRUE Interrupt was not executed
+// FALSE INT completed. Caller will see Regs for status
+//
+// Referrals: EFI_IA32_REGISTER_SET
+//
+//---------------------------------------------------------------------------
+//<AMI_PHDR_END>
+
+BOOLEAN Int86(
+ IN EFI_LEGACY_BIOS_PROTOCOL *This,
+ IN UINT8 BiosInt,
+ IN OUT EFI_IA32_REGISTER_SET *Regs
+)
+{
+ EFI_TPL OldTpl;
+
+ THUNK_DATA *ThunkData = (THUNK_DATA*)(gThunkAsmAddr+6);
+ //
+ // To avoid reentrance in Int86
+ //
+ if(gInsideThunk){
+ return FALSE;
+ }
+ gInsideThunk = TRUE;
+ ThunkData->isFarCall = FALSE;
+ ThunkData->BiosInt = BiosInt;
+ ThunkData->Stack.StackSize = 0; //This is required
+
+
+ //Copy thunk registers.
+ ThunkData->Regs = *Regs;
+
+#if defined(AMIUSB_SUPPORT)
+{
+ EFI_STATUS Status;
+
+ if (gUsbProtocol == NULL) {
+ Status = pBS->LocateProtocol(&gEfiUsbProtocolGuid, NULL, &gUsbProtocol);
+ if (EFI_ERROR(Status)) {
+ gUsbProtocol=NULL; // To be used later, after returning from INT
+ }
+ }
+ if (gUsbProtocol != NULL) {
+ gUsbProtocol->UsbChangeEfiToLegacy(1);
+ }
+}
+#endif
+
+ OldTpl = pBS->RaiseTPL(TPL_HIGH_LEVEL);
+ gLegacy8259->SetMode(gLegacy8259,Efi8259LegacyMode,NULL,NULL);
+
+ SetKbcPresenceInMiscInfo();
+
+ ((void(*)(UINTN))gThunkAsmAddr)(gThunkAsmAddr);
+
+#if defined(AMIUSB_SUPPORT)
+ if (gUsbProtocol) {
+ gUsbProtocol->UsbChangeEfiToLegacy(0);
+ }
+#endif
+
+ gLegacy8259->SetMode(gLegacy8259,Efi8259ProtectedMode,NULL,NULL);
+ pBS->RestoreTPL(OldTpl);
+
+ //Restore thunk registers.
+ *Regs = ThunkData->Regs;
+ gInsideThunk = FALSE;
+
+ return FALSE; // INT completed. Caller will see Regs for status.
+}
+
+
+//<AMI_PHDR_START>
+//---------------------------------------------------------------------------
+//
+// Name: FarCall86
+//
+// Description: Executes 16 bit code starting from a given address
+//
+// Input:
+// This LegacyBiosProtocol instance pointer
+// Segment, Offset Starting address of the 16 bit routine
+// Regs CPU register values to pass to the routine
+// Stack Stack pointer with the possible data to be passed to the routine
+// StackSize Size of the stack passed to the routine
+//
+// Output:
+// TRUE Call was not executed
+// FALSE Call completed. Caller will see Regs for status
+//
+//---------------------------------------------------------------------------
+//<AMI_PHDR_END>
+
+BOOLEAN FarCall86(
+ IN EFI_LEGACY_BIOS_PROTOCOL *This,
+ IN UINT16 Segment,
+ IN UINT16 Offset,
+ IN EFI_IA32_REGISTER_SET *Regs,
+ IN VOID *Stack,
+ IN UINTN StackSize
+)
+{
+ EFI_TPL OldTpl;
+ UINT16 IrqMask, SaveIrqMask;
+ UINT16 ProtectedIrqMask, ProtectedSaveIrqMask;
+ THUNK_DATA *ThunkData = (THUNK_DATA*)(gThunkAsmAddr+6);
+ UINT16 FuncNumber;
+ BOOLEAN IsCsm16Call =
+ Segment == CoreBiosInfo->Csm16EntrySeg &&
+ CoreBiosInfo->Csm16EntryOfs == Offset;
+ BOOLEAN IsCsm16DispatchOpRom = IsCsm16Call &&
+ Regs->X.AX == Compatibility16DispatchOprom;
+
+ BOOLEAN IsCsm16LegacyBoot = IsCsm16Call &&
+ Regs->X.AX == Compatibility16Boot;
+
+ EFI_STATUS Status = EFI_SUCCESS;
+ EFI_KEY_TOGGLE_STATE KeyToggleState=0;
+ //
+ // To avoid reentrance in FarCall86
+ //
+ if(gInsideThunk){
+ return FALSE;
+ }
+
+ gInsideThunk = TRUE;
+
+ //
+ // Change USB operation mode indicator from EFI to Legacy
+ //
+#if defined(AMIUSB_SUPPORT)
+ if (IsCsm16LegacyBoot == FALSE) {
+ if (gUsbProtocol == NULL) {
+ Status = pBS->LocateProtocol(&gEfiUsbProtocolGuid, NULL, &gUsbProtocol);
+ if (EFI_ERROR(Status)) {
+ gUsbProtocol=NULL; // To be used later, after FarCall execution
+ }
+ }
+ }
+ if (gUsbProtocol != NULL) {
+ gUsbProtocol->UsbChangeEfiToLegacy(1);
+ }
+#endif
+
+ ThunkData->isFarCall = TRUE;
+
+ //Copy address for thunk.
+ ThunkData->FarCall.Segment = Segment;
+ ThunkData->FarCall.Offset = Offset;
+
+ //Copy address for stack
+ if (Stack)
+ {
+ ThunkData->Stack.Stack = (UINT32)Stack;
+ ThunkData->Stack.StackSize = (UINT32)StackSize;
+ } else ThunkData->Stack.StackSize = 0;
+
+ //Copy thunk registers.
+ ThunkData->Regs = *Regs;
+
+ // Reset the PS/2 keyboard before legacy boot
+ if (IsCsm16LegacyBoot == TRUE) {
+ if (gPS2KBDInterface) gPS2KBDInterface->Reset(gPS2KBDInterface, FALSE);
+ }
+
+ FuncNumber = Regs->X.AX;
+
+ if (IsCsm16Call) {
+ if (FuncNumber != 05 && FuncNumber != 02 && FuncNumber != 03) {
+ gLegacy8259->GetMask(gLegacy8259, &SaveIrqMask, NULL, NULL, NULL); // Save current Mask
+
+ IrqMask = -1;
+ gLegacy8259->SetMask(gLegacy8259, &IrqMask, NULL, NULL, NULL); // Set new Mask
+ }
+ }
+
+ //
+ // Mask all HW interrupts for real mode for CSM16 function #0 (InitializeYourself).
+ // This is needed since IVT is not installed before executing function #0.
+ //
+ // TODO: Explore the possibility of IVT installation from CSM32; in this case the
+ // code that is updating and using ProtectedIrqMask can be removed.
+ //
+ if (IsCsm16Call && FuncNumber == 00 ) {
+ gLegacy8259->GetMask(gLegacy8259, NULL, NULL, &ProtectedSaveIrqMask, NULL); // Save current Mask
+ ProtectedIrqMask = -1;
+ gLegacy8259->SetMask(gLegacy8259, NULL , NULL, &ProtectedIrqMask, NULL); // Set new Mask
+ }
+
+ OldTpl = pBS->RaiseTPL(TPL_HIGH_LEVEL);
+ //
+ // The following call will change the PIC settings to real mode; this includes
+ // unmasking all real mode interrupts. Note, that at this point HW interrupts
+ // must be disabled. This is done by the previous RaiseTPL call.
+ //
+ gLegacy8259->SetMode(gLegacy8259,Efi8259LegacyMode,NULL,NULL);
+
+ ((void(*)(UINTN))gThunkAsmAddr)(gThunkAsmAddr);
+
+#if defined(AMIUSB_SUPPORT)
+ if (gUsbProtocol) {
+ gUsbProtocol->UsbChangeEfiToLegacy(0);
+ }
+#endif
+
+ if (IsCsm16Call && FuncNumber == 00 ) {
+ gLegacy8259->SetMask(gLegacy8259, NULL , NULL, &ProtectedSaveIrqMask, NULL); // Set new Mask
+ }
+
+ gLegacy8259->SetMode(gLegacy8259,Efi8259ProtectedMode,NULL,NULL);
+
+ //Restore thunk registers.
+ *Regs = ThunkData->Regs;
+ pBS->RestoreTPL(OldTpl);
+
+ //
+ // Change USB operation mode indicator back to EFI
+ //
+
+ if (!IsCsm16Call ||
+ (IsCsm16Call &&
+ (FuncNumber == 05 || FuncNumber == 02 || FuncNumber == 03))) {
+// Reset PS2 Mouse
+ if (!gPS2KBDInterface) {
+ GetPs2SimpleTextInProtocolInterface((BIOS_INFO *)This, &gPS2KBDInterface);
+ }
+
+ if (gPS2KBDInterface) gPS2KBDInterface->Reset(gPS2KBDInterface, FALSE);
+
+ }
+ else gLegacy8259->SetMask(gLegacy8259, &SaveIrqMask, NULL, NULL, NULL); // Restore mask
+
+ if(IsCsm16DispatchOpRom) {
+ if((pKeyCodeProtocol == NULL && IsCsm16LegacyBoot == FALSE)) {
+ pBS->HandleProtocol(pST->ConsoleInHandle, &gAmiEfiKeycodeProtocolGuid, (void*)&pKeyCodeProtocol);
+ }
+ if(pKeyCodeProtocol != NULL) {
+ UINT8 KeyState;
+ KeyState = *(UINT8*)(UINTN)0x417;
+ if(KeyState & 0x10) {
+ KeyToggleState |= SCROLL_LOCK_ACTIVE;
+ }
+ if(KeyState & 0x20) {
+ KeyToggleState |= NUM_LOCK_ACTIVE;
+ }
+ if(KeyState & 0x40) {
+ KeyToggleState |= CAPS_LOCK_ACTIVE;
+ }
+ KeyToggleState |= TOGGLE_STATE_VALID;
+ pKeyCodeProtocol->SetState((EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL*)pKeyCodeProtocol,&KeyToggleState);
+ }
+ }
+
+ *(UINT8*)(UINTN)0x417 &= 0x70; // Clear key modifiers status in BDA
+
+ gInsideThunk = FALSE;
+
+ return FALSE; // CALL completed. Caller will see Regs for status.
+}
+
+
+//<AMI_PHDR_START>
+//---------------------------------------------------------------------------
+//
+// Name: LoadRealModeFile
+//
+// Description: Code that loads 16-bit thunk code at a particular address
+//
+// Input:
+// 16-bit binary file GUID
+// Address to load the binary to
+//
+// Output:
+// Status of the load operation
+//
+//---------------------------------------------------------------------------
+//<AMI_PHDR_END>
+
+EFI_STATUS LoadRealModeFile(EFI_GUID *Guid, VOID *Address)
+{
+ EFI_FIRMWARE_VOLUME_PROTOCOL *Fv;
+ UINT32 Authentication;
+ VOID *BufferAddr=0;
+ UINTN BufferSize=0;
+ EFI_STATUS Status;
+ UINTN NumHandles;
+ EFI_HANDLE *HandleBuffer;
+ UINTN i;
+
+ Status = pBS->LocateHandleBuffer(ByProtocol,&gEfiFirmwareVolumeProtocolGuid,NULL,&NumHandles,&HandleBuffer);
+ if (EFI_ERROR(Status)) return Status;
+
+ for (i = 0; i< NumHandles; ++i)
+ {
+ Status = pBS->HandleProtocol(HandleBuffer[i],&guidFV,&Fv);
+ if (EFI_ERROR(Status)) continue;
+
+ Status = Fv->ReadSection(Fv,
+ Guid,
+ EFI_SECTION_RAW,
+ 0,
+ &BufferAddr,
+ &BufferSize,
+ &Authentication);
+
+ if (Status == EFI_SUCCESS)
+ {
+ MemCpy(
+ Address,
+ (UINT8*)BufferAddr,
+ BufferSize
+ );
+ pBS->FreePool(BufferAddr);
+ break;
+ }
+ }
+
+ pBS->FreePool(HandleBuffer);
+
+ return Status;
+}
+
+
+//<AMI_PHDR_START>
+//---------------------------------------------------------------------------
+//
+// Name: InitializeThunk
+//
+// Description: 16-bit thunk initialization routine. It calls 16 bit code to
+// do the address fixups within 16-bit code.
+//
+// Input: The instance of BIOS_INFO pointer
+//
+// Output: Status of the initialization completion
+//
+//---------------------------------------------------------------------------
+//<AMI_PHDR_END>
+
+EFI_STATUS InitializeThunk(
+ BIOS_INFO* CoreBiosInfo
+)
+{
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS Thunkaddr = (EFI_PHYSICAL_ADDRESS)CoreBiosInfo->Thunk;
+ UINT16 ThunkFixupsOffset;
+
+ //Locate Legacy8259 Protocol
+ gLegacy8259 = CoreBiosInfo->i8259;
+
+ //Copy ThunkAsm to memory.
+ Status = LoadRealModeFile(&gCsmThunkGuid, (VOID*)Thunkaddr);
+ if (EFI_ERROR(Status)) return Status;
+
+ gThunkAsmAddr = (UINT32)Thunkaddr;
+
+ //Call fixups
+ ThunkFixupsOffset = *(UINT16*)(gThunkAsmAddr+2);
+ ((void(*)(UINTN))(gThunkAsmAddr+ThunkFixupsOffset))(gThunkAsmAddr);
+
+ return Status;
+}
+
+
+//<AMI_PHDR_START>
+//---------------------------------------------------------------------------
+//
+// Name: GetPs2SimpleTextInProtocolInterface
+//
+// Description: This function returns the SimpleTextIn protocol interface
+//
+//---------------------------------------------------------------------------
+//<AMI_PHDR_END>
+
+EFI_STATUS GetPs2SimpleTextInProtocolInterface(
+ BIOS_INFO *This,
+ EFI_SIMPLE_TEXT_INPUT_PROTOCOL **PS2KBDInterface
+)
+{
+ EFI_STATUS Status;
+ UINTN i,cnt;
+ ACPI_HID_DEVICE_PATH *siodp;
+ ACPI_PNPID *pnpid;
+ EFI_HANDLE *hbuff = NULL;
+ EFI_DEVICE_PATH_PROTOCOL *dp;
+ BOOLEAN bIsConnected = FALSE;
+
+ Status = pBS->LocateHandleBuffer(ByProtocol,&gEfiSimpleTextInProtocolGuid, NULL, &cnt, &hbuff);
+
+ if (EFI_ERROR(Status)) return Status;
+
+ for(i=0; i<cnt; i++){
+ Status=pBS->HandleProtocol(hbuff[i],&gEfiDevicePathProtocolGuid,&dp);
+ if(EFI_ERROR(Status)) continue;
+
+ siodp=DPGetLastNode(dp);
+ if(siodp->Header.Type!=ACPI_DEVICE_PATH
+ || siodp->Header.SubType!=ACPI_DP
+ || NODE_LENGTH(&siodp->Header) != ACPI_DEVICE_PATH_LENGTH) continue;
+
+ pnpid=(ACPI_PNPID*)&siodp->HID;
+ if (pnpid->PnpID == 0x0303) {
+// Status = pBS->OpenProtocol (hbuff[i], &gEfiSimpleTextInProtocolGuid, &PS2KBDInterface, This->hBios, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ Status = pBS->HandleProtocol(hbuff[i],&gEfiSimpleTextInProtocolGuid, PS2KBDInterface);
+ break;
+ }
+ Status = EFI_NOT_FOUND;
+ }
+ pBS->FreePool(hbuff);
+ return Status;
+}
+//**********************************************************************
+//**********************************************************************
+//** **
+//** (C)Copyright 1985-2010, American Megatrends, Inc. **
+//** **
+//** All Rights Reserved. **
+//** **
+//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
+//** **
+//** Phone: (770)-246-8600 **
+//** **
+//**********************************************************************
+//**********************************************************************
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 02:30:13 +0000