init. 1AQQW051HEADmaster

1 files changed, 179 insertions, 0 deletions

diff --git a/Core/EM/Terminal/TerminalAcpi.c b/Core/EM/Terminal/TerminalAcpi.c
new file mode 100644
index 0000000..da03372
--- /dev/null
+++ b/Core/EM/Terminal/TerminalAcpi.c
@@ -0,0 +1,179 @@
+//*************************************************************************
+//*************************************************************************
+//**                                                                     **
+//**        (C)Copyright 1985-2011, American Megatrends, Inc.            **
+//**                                                                     **
+//**                       All Rights Reserved.                          **
+//**                                                                     **
+//**      5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093           **
+//**                                                                     **
+//**                       Phone: (770)-246-8600                         **
+//**                                                                     **
+//*************************************************************************
+//*************************************************************************
+
+//*************************************************************************
+// $Header: /Alaska/BIN/Modules/Terminal/TerminalAcpi.c 1     12/22/11 1:34a Rajeshms $
+//
+// $Revision: 1 $
+//
+// $Date: 12/22/11 1:34a $
+//*************************************************************************
+// Revision History
+// ----------------
+// $Log: /Alaska/BIN/Modules/Terminal/TerminalAcpi.c $
+// 
+// 1     12/22/11 1:34a Rajeshms
+// [TAG]  		EIP57579
+// [Category]  	Improvement
+// [Description]  	PCI legacy console redirection causes Legacy OS
+// installation slow because when Redirection is enabled for Legacy OS,
+// Legacy Serial Redirection enables the PCI Serial interrupt for
+// redirection and sometime after that OS uses its own IVT but still PCI
+// Serial interrupt is generated and not handled.So, disable redirection
+// at OS level. we disable redirection on ACPI enable/disable call and
+// reset the Interrupt Enable Register so that interrupt is not generated.
+// [Files]  		Terminal.sdl, Terminal.mak, Terminal.cif, TerminalAcpi.c
+// 
+// 
+//*************************************************************************
+//<AMI_FHDR_START>
+//
+// Name:        TerminalAcpi.c
+//
+// Description: This file contains function to disable the PCI redirection 
+//              at ACPI enable call.
+//
+//<AMI_FHDR_END>
+//*************************************************************************
+
+//----------------------------------------------------------------------------
+// Include(s)
+//----------------------------------------------------------------------------
+
+#include <Token.h>
+#include <AmiDxeLib.h>
+#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)
+#include <Protocol\SmmSwDispatch2.h>
+#define AMI_SMM_SW_DISPATCH_CONTEXT  EFI_SMM_SW_REGISTER_CONTEXT
+#else
+#include <Protocol\SmmSwDispatch.h>
+#define AMI_SMM_SW_DISPATCH_CONTEXT  EFI_SMM_SW_DISPATCH_CONTEXT
+#endif
+#include "TerminalSetupVar.h"
+
+#define     CFG_SPACE_INDEX_REG         0xCF8
+#define     CFG_SPACE_DATA_REG          0xCFC
+#define     PCI_BAR0                    0x0010
+#define     INT08h_SEGMENT              0xF000             
+#define     INT08h_OFFSET               0xFEA5
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+//
+// Procedure:   TerminalAcpiEnableDisableCallBack
+//
+// Description: This routine will be called to disable PCI redirection at ACPI
+//              enable/disable call and reset Interrupt Enable Register to 
+//              disable interrupt from PCI Serial device & replace actual INT08h.
+//
+// Input:       None 
+//
+// Output:      None
+//
+// Notes:       None
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+
+VOID
+TerminalAcpiEnableDisableCallBack(
+    IN EFI_HANDLE                   DispatchHandle,
+    IN AMI_SMM_SW_DISPATCH_CONTEXT  *DispatchContext
+)
+{
+#if (TOTAL_PCI_SERIAL_PORTS > 0)
+    EFI_STATUS  Status;
+    UINT8       RegNum = PCI_BAR0;
+    UINT32      PciAddr;
+    UINT32      BarAddress;
+    UINT8       i,DevFunc;
+
+    UINT8   gTotalSioSerialPorts = TOTAL_SIO_SERIAL_PORTS;
+    EFI_GUID gTerminalVarGuid   = TERMINAL_VAR_GUID;
+    UINTN PciSerialPortsLocationVarSize = 
+                                    sizeof(PCI_SERIAL_PORTS_LOCATION_VAR);
+    PCI_SERIAL_PORTS_LOCATION_VAR PciSerialPortsLocationVar; 
+
+    UINTN SerialPortsEnabledVarSize = sizeof(SERIAL_PORTS_ENABLED_VAR); 
+    UINT32 SerialPortsEnabledVarAttributes=0;
+    SERIAL_PORTS_ENABLED_VAR SerialPortsEnabledVar;
+
+
+    Status = pRS->GetVariable(SERIAL_PORTS_ENABLED_VAR_C_NAME, 
+                                &gTerminalVarGuid,
+                                &SerialPortsEnabledVarAttributes, 
+                                &SerialPortsEnabledVarSize, 
+                                &SerialPortsEnabledVar);
+
+    if (!EFI_ERROR(Status)) {
+        Status = pRS->GetVariable(PCI_SERIAL_PORTS_LOCATION_VAR_C_NAME, 
+                                &gTerminalVarGuid, 
+                                NULL, 
+                                &PciSerialPortsLocationVarSize, 
+                                &PciSerialPortsLocationVar);
+
+        if (!EFI_ERROR(Status)) {
+            for (i = 0; i < TOTAL_PCI_SERIAL_PORTS; i++) {
+                //
+                // Look for the PCI device that are enabled.
+                //
+                if (SerialPortsEnabledVar.PortsEnabled[gTotalSioSerialPorts+i]) {
+                    if ((PciSerialPortsLocationVar.Bus[i] == 0) &&
+                        (PciSerialPortsLocationVar.Device[i] == 0) &&
+                        (PciSerialPortsLocationVar.Function[i] == 0)) {
+                        continue;
+                    }
+                    
+                    DevFunc = (PciSerialPortsLocationVar.Device[i] << 3) + PciSerialPortsLocationVar.Function[i];
+                    PciAddr = ((UINT32) (( (UINT16) PciSerialPortsLocationVar.Bus[i] ) << 8) +  DevFunc) << 8;
+                    PciAddr += (RegNum & 0xfc);
+                    PciAddr |= 0x80000000;
+
+                    IoWrite32(CFG_SPACE_INDEX_REG, PciAddr);
+                    BarAddress = IoRead32(CFG_SPACE_DATA_REG);
+                    //
+                    // Reset the IER register of UART.
+                    //
+                    if(BarAddress & 1) {
+                        IoWrite32(BarAddress, 0);
+                    } else {
+                        *(UINTN*)( (BarAddress & 0xfffffff0) + 1) = 0;
+                    }
+                }
+            }
+            //
+            // Replace the Actual INT08h routine which was hooked by Legacy console Redirection 
+            //
+            *(UINT16*)0x0020 = (UINT16)INT08h_OFFSET;
+            *(UINT16*)0x0022 = (UINT16)INT08h_SEGMENT;
+
+            IoWrite8(0x80,0x99);
+        }
+    }
+#endif
+    return;
+}
+
+//*************************************************************************
+//*************************************************************************
+//**                                                                     **
+//**        (C)Copyright 1985-2011, American Megatrends, Inc.            **
+//**                                                                     **
+//**                       All Rights Reserved.                          **
+//**                                                                     **
+//**      5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093           **
+//**                                                                     **
+//**                       Phone: (770)-246-8600                         **
+//**                                                                     **
+//*************************************************************************
+//*************************************************************************
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