ArmVirtPkg: steer DebugLib output away from SerialPortLib+console tra…

…ffic

For the RELEASE target, all ArmVirtPkg DSCs inherit BaseDebugLibNull from
"ArmVirt.dsc.inc"; keep that.

For NOOPT and DEBUG:

- switch the lib class resolution pair (BaseDebugLibSerialPort +
  FdtPL011SerialPortLib) that is set as the default for all module types
  in "ArmVirt.dsc.inc" to DebugLibFdtPL011UartRam;

- switch the lib class resolution pair (BaseDebugLibSerialPort +
  EarlyFdtPL011SerialPortLib) that is set as an override for SEC,
  PEI_CORE, PEIM modules in "ArmVirt.dsc.inc" to
  DebugLibFdtPL011UartFlash;

- switch the lib class resolution pair (DxeRuntimeDebugLibSerialPort +
  FdtPL011SerialPortLib) that is set as an override for DXE_RUNTIME_DRIVER
  modules in "ArmVirt.dsc.inc" to DxeRuntimeDebugLibFdtPL011Uart;

- mask all of the above DebugLib class resolution changes in
  "ArmVirtKvmTool.dsc", because "ArmVirtKvmTool.dsc" uses
  BaseSerialPortLib16550 rather than PL011 UARTs,

- mask all of the above DebugLib class resolution changes in
  "ArmVirtXen.dsc" too, because "ArmVirtXen.dsc" uses
  XenConsoleSerialPortLib rather than PL011 UARTs.

I regression-tested this change for "ArmVirtKvmTool.dsc" and
"ArmVirtXen.dsc" by building them for both DEBUG and RELEASE, both before
the patch and after, and comparing the edk2 build report files (focusing
on lib class resolutions). There are no changes.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Julien Grall <julien@xen.org>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20231008153912.175941-10-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=4577
[lersek@redhat.com: add TianoCore BZ reference]

ArmVirtPkg/ArmVirt.dsc.inc

@@ -37,7 +37,7 @@
 !if $(TARGET) == RELEASE
   DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
 !else
-  DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+  DebugLib|ArmVirtPkg/Library/DebugLibFdtPL011Uart/DebugLibFdtPL011UartRam.inf
 !endif
   DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
 
@@ -189,6 +189,9 @@
   PeiServicesLib|MdePkg/Library/PeiServicesLib/PeiServicesLib.inf
   PeiServicesTablePointerLib|ArmPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
   MemoryAllocationLib|MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
+!if $(TARGET) != RELEASE
+  DebugLib|ArmVirtPkg/Library/DebugLibFdtPL011Uart/DebugLibFdtPL011UartFlash.inf
+!endif
 
 [LibraryClasses.common.PEI_CORE]
   PcdLib|MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
@@ -204,6 +207,9 @@
 
   PeiServicesTablePointerLib|ArmPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
   SerialPortLib|ArmVirtPkg/Library/FdtPL011SerialPortLib/EarlyFdtPL011SerialPortLib.inf
+!if $(TARGET) != RELEASE
+  DebugLib|ArmVirtPkg/Library/DebugLibFdtPL011Uart/DebugLibFdtPL011UartFlash.inf
+!endif
 
 [LibraryClasses.common.PEIM]
   PcdLib|MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
@@ -219,6 +225,9 @@
 
   PeiServicesTablePointerLib|ArmPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointerLib.inf
   SerialPortLib|ArmVirtPkg/Library/FdtPL011SerialPortLib/EarlyFdtPL011SerialPortLib.inf
+!if $(TARGET) != RELEASE
+  DebugLib|ArmVirtPkg/Library/DebugLibFdtPL011Uart/DebugLibFdtPL011UartFlash.inf
+!endif
 
 [LibraryClasses.common.DXE_CORE]
   HobLib|MdePkg/Library/DxeCoreHobLib/DxeCoreHobLib.inf
@@ -246,7 +255,7 @@
   MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
   CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf
 !if $(TARGET) != RELEASE
-  DebugLib|MdePkg/Library/DxeRuntimeDebugLibSerialPort/DxeRuntimeDebugLibSerialPort.inf
+  DebugLib|ArmVirtPkg/Library/DebugLibFdtPL011Uart/DxeRuntimeDebugLibFdtPL011Uart.inf
 !endif
   VariablePolicyLib|MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLibRuntimeDxe.inf
 

ArmVirtPkg/ArmVirtKvmTool.dsc

@@ -77,6 +77,9 @@
   PciExpressLib|MdePkg/Library/BasePciExpressLib/BasePciExpressLib.inf
   PlatformHookLib|ArmVirtPkg/Library/Fdt16550SerialPortHookLib/Fdt16550SerialPortHookLib.inf
   SerialPortLib|MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.inf
+!if $(TARGET) != RELEASE
+  DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!endif
 
   HwInfoParserLib|DynamicTablesPkg/Library/FdtHwInfoParserLib/FdtHwInfoParserLib.inf
   DynamicPlatRepoLib|DynamicTablesPkg/Library/Common/DynamicPlatRepoLib/DynamicPlatRepoLib.inf
@@ -88,6 +91,14 @@
   PciExpressLib|MdePkg/Library/BasePciExpressLib/BasePciExpressLib.inf
   PlatformHookLib|ArmVirtPkg/Library/Fdt16550SerialPortHookLib/EarlyFdt16550SerialPortHookLib.inf
   SerialPortLib|MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.inf
+!if $(TARGET) != RELEASE
+  DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!endif
+
+[LibraryClasses.common.DXE_RUNTIME_DRIVER]
+!if $(TARGET) != RELEASE
+  DebugLib|MdePkg/Library/DxeRuntimeDebugLibSerialPort/DxeRuntimeDebugLibSerialPort.inf
+!endif
 
 [LibraryClasses.common.UEFI_DRIVER]
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf

ArmVirtPkg/ArmVirtXen.dsc

@@ -29,6 +29,9 @@
 
 [LibraryClasses]
   SerialPortLib|OvmfPkg/Library/XenConsoleSerialPortLib/XenConsoleSerialPortLib.inf
+!if $(TARGET) != RELEASE
+  DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!endif
   RealTimeClockLib|OvmfPkg/Library/XenRealTimeClockLib/XenRealTimeClockLib.inf
   XenHypercallLib|OvmfPkg/Library/XenHypercallLib/XenHypercallLib.inf
 
@@ -52,6 +55,11 @@
   TpmMeasurementLib|MdeModulePkg/Library/TpmMeasurementLibNull/TpmMeasurementLibNull.inf
   TpmPlatformHierarchyLib|SecurityPkg/Library/PeiDxeTpmPlatformHierarchyLibNull/PeiDxeTpmPlatformHierarchyLib.inf
 
+[LibraryClasses.common.DXE_RUNTIME_DRIVER]
+!if $(TARGET) != RELEASE
+  DebugLib|MdePkg/Library/DxeRuntimeDebugLibSerialPort/DxeRuntimeDebugLibSerialPort.inf
+!endif
+
 [LibraryClasses.common.UEFI_DRIVER]
   UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
 
@@ -147,6 +155,9 @@
       PrePiHobListPointerLib|ArmPlatformPkg/Library/PrePiHobListPointerLib/PrePiHobListPointerLib.inf
       MemoryAllocationLib|EmbeddedPkg/Library/PrePiMemoryAllocationLib/PrePiMemoryAllocationLib.inf
       SerialPortLib|OvmfPkg/Library/XenConsoleSerialPortLib/XenConsoleSerialPortLib.inf
+!if $(TARGET) != RELEASE
+      DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
+!endif
   }
 
   #