Replace Fixed PCD with Feature PCD for useHalfHandshake to reduce code size.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8862 6f19259b-4bc3-4df7-8a09-765794883524

IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/IsaSerialDxe.inf

@@ -65,4 +65,6 @@
   gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits|8
   gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity|1
   gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits|1
+
+[FeaturePcd.common]
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdIsaBusSerialUseHalfHandshake|FALSE

IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/Serial.c

@@ -83,8 +83,7 @@ SERIAL_DEV  gSerialDevTempate = {
   FALSE,
   FALSE,
   Uart16550A,
-  NULL,
+  NULL
-  FixedPcdGetBool (PcdIsaBusSerialUseHalfHandshake)   //UseHalfHandshake
 };
 
 /**
@@ -807,7 +806,7 @@ IsaSerialReceiveTransmit (
     // if receive buffer is available.
     //
     if (SerialDevice->HardwareFlowControl &&
-        !SerialDevice->UseHalfHandshake   &&
+        !FeaturePcdGet(PcdIsaBusSerialUseHalfHandshake)&&
         !ReceiveFifoFull
         ) {
       Mcr.Data     = READ_MCR (SerialDevice->IsaIo, SerialDevice->BaseAddress);
@@ -844,7 +843,7 @@ IsaSerialReceiveTransmit (
           // tell the peer to stop sending data.
           //
           if (SerialDevice->HardwareFlowControl &&
-              !SerialDevice->UseHalfHandshake   &&
+              !FeaturePcdGet(PcdIsaBusSerialUseHalfHandshake)   &&
               IsaSerialFifoFull (&SerialDevice->Receive)
               ) {
             Mcr.Data     = READ_MCR (SerialDevice->IsaIo, SerialDevice->BaseAddress);
@@ -873,7 +872,7 @@ IsaSerialReceiveTransmit (
           //
           // For half handshake flow control assert RTS before sending.
           //
-          if (SerialDevice->UseHalfHandshake) {
+          if (FeaturePcdGet(PcdIsaBusSerialUseHalfHandshake)) {
             Mcr.Data     = READ_MCR (SerialDevice->IsaIo, SerialDevice->BaseAddress);
             Mcr.Bits.Rts= 0;
             WRITE_MCR (SerialDevice->IsaIo, SerialDevice->BaseAddress, Mcr.Data);
@@ -883,7 +882,7 @@ IsaSerialReceiveTransmit (
           //
           TimeOut   = 0;
           Msr.Data  = READ_MSR (SerialDevice->IsaIo, SerialDevice->BaseAddress);
-          while (Msr.Bits.Dcd == 1 && (!Msr.Bits.Cts ^ SerialDevice->UseHalfHandshake)) {
+          while (Msr.Bits.Dcd == 1 && (!Msr.Bits.Cts ^ FeaturePcdGet(PcdIsaBusSerialUseHalfHandshake))) {
             gBS->Stall (TIMEOUT_STALL_INTERVAL);
             TimeOut++;
             if (TimeOut > 5) {
@@ -893,7 +892,7 @@ IsaSerialReceiveTransmit (
             Msr.Data = READ_MSR (SerialDevice->IsaIo, SerialDevice->BaseAddress);
           }
 
-          if (Msr.Bits.Dcd== 0 || (Msr.Bits.Cts ^ SerialDevice->UseHalfHandshake)) {
+          if (Msr.Bits.Dcd== 0 || (Msr.Bits.Cts ^ FeaturePcdGet(PcdIsaBusSerialUseHalfHandshake))) {
             IsaSerialFifoRemove (&SerialDevice->Transmit, &Data);
             WRITE_THR (SerialDevice->IsaIo, SerialDevice->BaseAddress, Data);
           }
@@ -901,7 +900,7 @@ IsaSerialReceiveTransmit (
           //
           // For half handshake flow control, tell DCE we are done.
           //
-          if (SerialDevice->UseHalfHandshake) {
+          if (FeaturePcdGet(PcdIsaBusSerialUseHalfHandshake)) {
             Mcr.Data = READ_MCR (SerialDevice->IsaIo, SerialDevice->BaseAddress);
             Mcr.Bits.Rts = 1;
             WRITE_MCR (SerialDevice->IsaIo, SerialDevice->BaseAddress, Mcr.Data);

IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/Serial.h

@@ -109,7 +109,6 @@ typedef struct {
   BOOLEAN                                HardwareFlowControl;
   EFI_UART_TYPE                          Type;
   EFI_UNICODE_STRING_TABLE               *ControllerNameTable;
-  BOOLEAN                                UseHalfHandshake;
 } SERIAL_DEV;
 
 #define SERIAL_DEV_FROM_THIS(a) CR (a, SERIAL_DEV, SerialIo, SERIAL_DEV_SIGNATURE)

IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec

@@ -123,6 +123,9 @@
   ## This PCD specifies whether PciBus supports the hot plug device.
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciBusHotplugDeviceSupport|TRUE|BOOLEAN|0x0001003d
   
+  ## This PCD specifies whether Serial device use half hand shake.
+  gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdIsaBusSerialUseHalfHandshake|FALSE|BOOLEAN|0x00010043
+
 [PcdsFixedAtBuild]
   ## FFS filename to find the default BMP Logo file.
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdLogoFile |{ 0x99, 0x8b, 0xB2, 0x7B, 0xBB, 0x61, 0xD5, 0x11, 0x9A, 0x5D, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0x4D }|VOID*|16
@@ -143,9 +146,6 @@
   #  The default value in DxePhase is 128 KBytes.
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdStatusCodeMemorySize|1|UINT16|0x00010025
 
-  ## This PCD specifies whether Serial device use half hand shake.
-  gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdIsaBusSerialUseHalfHandshake|FALSE|BOOLEAN|0x00010043
-
 [PcdsDynamic]
   ## PCD is used to mark if the machine has complete one boot cycle before.
   #  After the complete boot, the variable BootState will be set to TRUE. 

IntelFrameworkModulePkg/IntelFrameworkModulePkg.dsc

@@ -131,6 +131,7 @@
   gEfiMdePkgTokenSpaceGuid.PcdDriverDiagnostics2Disable|FALSE
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdStatusCodeUseSerial|FALSE
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciBusHotplugDeviceSupport|TRUE
+  gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdIsaBusSerialUseHalfHandshake|FALSE
 
 [PcdsFixedAtBuild.common]
   gEfiMdePkgTokenSpaceGuid.PcdMaximumUnicodeStringLength|1000000
@@ -150,7 +151,6 @@
   gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity|1
   gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits|1
   gEfiMdePkgTokenSpaceGuid.PcdDefaultTerminalType|0
-  gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdIsaBusSerialUseHalfHandshake|FALSE
   
 [PcdsDynamicDefault.PEIM.DEFAULT]
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdStatusCodeMemorySize|1