ArmPkg/DefaultExceptionHandlerLib: use console if available

Print the minimal 'exception occurred' message to the console as well
as to the serial port if the console is available. This makes such
messages visible on systems where the console is graphical and the
serial is not connected.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>

3 files changed, 16 insertions, 3 deletions

diff --git a/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c b/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c
index 1024bf4..40d4b21 100644
--- a/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c
+++ b/ArmPkg/Library/DefaultExceptionHandlerLib/AArch64/DefaultExceptionHandler.c
@@ -22,6 +22,7 @@
 #include <Library/PrintLib.h>

 #include <Library/ArmDisassemblerLib.h>

 #include <Library/SerialPortLib.h>

+#include <Library/UefiBootServicesTableLib.h>

 

 #include <Guid/DebugImageInfoTable.h>

 #include <Protocol/DebugSupport.h>

@@ -159,14 +160,21 @@ DefaultExceptionHandler (
   INT32  Offset;

 

   if (mRecursiveException) {

-    CharCount = AsciiSPrint (Buffer, sizeof (Buffer),"\nRecursive exception occurred while dumping the CPU state\n");

-    SerialPortWrite ((UINT8 *) Buffer, CharCount);

+    STATIC CHAR8 CONST Message[] = "\nRecursive exception occurred while dumping the CPU state\n";

+

+    SerialPortWrite ((UINT8 *)Message, sizeof Message - 1);

+    if (gST->ConOut != NULL) {

+      AsciiPrint (Message);

+    }

     CpuDeadLoop ();

   }

   mRecursiveException = TRUE;

 

   CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"\n\n%a Exception at 0x%016lx\n", gExceptionTypeString[ExceptionType], SystemContext.SystemContextAArch64->ELR);

   SerialPortWrite ((UINT8 *) Buffer, CharCount);

+  if (gST->ConOut != NULL) {

+    AsciiPrint (Buffer);

+  }

 

   DEBUG_CODE_BEGIN ();

     CHAR8  *Pdb, *PrevPdb;

diff --git a/ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c b/ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c
index cc79cb2..2e0cfb2 100644
--- a/ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c
+++ b/ArmPkg/Library/DefaultExceptionHandlerLib/Arm/DefaultExceptionHandler.c
@@ -21,6 +21,7 @@
 #include <Library/PrintLib.h>

 #include <Library/ArmDisassemblerLib.h>

 #include <Library/SerialPortLib.h>

+#include <Library/UefiBootServicesTableLib.h>

 

 #include <Guid/DebugImageInfoTable.h>

 

@@ -194,7 +195,10 @@ DefaultExceptionHandler (
 

   CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"\n%a Exception PC at 0x%08x  CPSR 0x%08x ",

          gExceptionTypeString[ExceptionType], SystemContext.SystemContextArm->PC, SystemContext.SystemContextArm->CPSR);

-  SerialPortWrite ((UINT8 *) Buffer, CharCount);

+  SerialPortWrite ((UINT8 *)Buffer, CharCount);

+  if (gST->ConOut != NULL) {

+    AsciiPrint (Buffer);

+  }

 

   DEBUG_CODE_BEGIN ();

     CHAR8   *Pdb;

diff --git a/ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLib.inf b/ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLib.inf
index 7609f82..6bc4871 100644
--- a/ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLib.inf
+++ b/ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandlerLib.inf
@@ -42,6 +42,7 @@
   PeCoffGetEntryPointLib

   ArmDisassemblerLib

   SerialPortLib

+  UefiBootServicesTableLib

 

 [Guids]

   gEfiDebugImageInfoTableGuid