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Update execption handler to print out DFSR & IFSR info. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9864 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
andrewfish 2010-01-29 21:49:26 +00:00
parent 5e9edaea7c
commit d5b0f232f7
1 changed files with 47 additions and 3 deletions
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50
ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandler.c
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@ -178,7 +178,37 @@ CpsrString (
AsciiStrCat (Str, ModeStr);
return;
}
CHAR8 *
FaultStatusToString (
IN UINT32 Status
)
{
CHAR8 *FaultSource;
switch (Status) {
case 0x01: FaultSource = "Alignment fault"; break;
case 0x02: FaultSource = "Debug event fault"; break;
case 0x03: FaultSource = "Access Flag fault on Section"; break;
case 0x04: FaultSource = "Cache maintenance operation fault[2]"; break;
case 0x05: FaultSource = "Translation fault on Section"; break;
case 0x06: FaultSource = "Access Flag fault on Page"; break;
case 0x07: FaultSource = "Translation fault on Page"; break;
case 0x08: FaultSource = "Precise External Abort"; break;
case 0x09: FaultSource = "Domain fault on Section"; break;
case 0x0b: FaultSource = "Domain fault on Page"; break;
case 0x0c: FaultSource = "External abort on translation, first level"; break;
case 0x0d: FaultSource = "Permission fault on Section"; break;
case 0x0e: FaultSource = "External abort on translation, second level"; break;
case 0x0f: FaultSource = "Permission fault on Page"; break;
case 0x16: FaultSource = "Imprecise External Abort"; break;
default: FaultSource = "No function"; break;
}
return FaultSource;
}
CHAR8 *gExceptionTypeString[] = {
"Reset",
"Undefined OpCode",
@ -207,6 +237,8 @@ DefaultExceptionHandler (
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
UINT32 DfsrStatus;
BOOLEAN DfsrWrite;
DEBUG ((EFI_D_ERROR, "\n%a Exception PC at 0x%08x CPSR 0x%08x ", gExceptionTypeString[ExceptionType], SystemContext.SystemContextArm->PC, SystemContext.SystemContextArm->CPSR));
DEBUG_CODE_BEGIN ();
@ -242,7 +274,8 @@ DefaultExceptionHandler (
DEBUG ((EFI_D_ERROR, "\n%a", Buffer));
} else {
// Thumb
DEBUG ((EFI_D_ERROR, "\nFaulting Instruction 0x%04x", (UINT16 *)(UINTN)SystemContext.SystemContextArm->PC));
DisassembleThumbInstruction ((UINT16 *)(UINTN)SystemContext.SystemContextArm->PC, Buffer, sizeof (Buffer));
DEBUG ((EFI_D_ERROR, "\n%a", Buffer));
}
}
DEBUG_CODE_END ();
@ -250,8 +283,19 @@ DefaultExceptionHandler (
DEBUG ((EFI_D_ERROR, " R4 0x%08x R5 0x%08x R6 0x%08x R7 0x%08x\n", SystemContext.SystemContextArm->R4, SystemContext.SystemContextArm->R5, SystemContext.SystemContextArm->R6, SystemContext.SystemContextArm->R7));
DEBUG ((EFI_D_ERROR, " R8 0x%08x R9 0x%08x R10 0x%08x R11 0x%08x\n", SystemContext.SystemContextArm->R8, SystemContext.SystemContextArm->R9, SystemContext.SystemContextArm->R10, SystemContext.SystemContextArm->R11));
DEBUG ((EFI_D_ERROR, " R12 0x%08x SP 0x%08x LR 0x%08x PC 0x%08x\n", SystemContext.SystemContextArm->R12, SystemContext.SystemContextArm->SP, SystemContext.SystemContextArm->LR, SystemContext.SystemContextArm->PC));
DEBUG ((EFI_D_ERROR, "DFSR 0x%08x DFAR 0x%08x IFSR 0x%08x IFAR 0x%08x\n\n", SystemContext.SystemContextArm->DFSR, SystemContext.SystemContextArm->DFAR, SystemContext.SystemContextArm->IFSR, SystemContext.SystemContextArm->IFAR));
DEBUG ((EFI_D_ERROR, "DFSR 0x%08x DFAR 0x%08x IFSR 0x%08x IFAR 0x%08x\n", SystemContext.SystemContextArm->DFSR, SystemContext.SystemContextArm->DFAR, SystemContext.SystemContextArm->IFSR, SystemContext.SystemContextArm->IFAR));
// Bit10 is Status[4] Bit3:0 is Status[3:0]
DfsrStatus = (SystemContext.SystemContextArm->DFSR & 0xf) | ((SystemContext.SystemContextArm->DFSR >> 6) & 0x10);
DfsrWrite = (SystemContext.SystemContextArm->DFSR & BIT11) != 0;
if (DfsrStatus != 0x00) {
DEBUG ((EFI_D_ERROR, " %a: %a 0x%08x\n", FaultStatusToString (DfsrStatus), DfsrWrite ? "write to" : "read from", SystemContext.SystemContextArm->DFAR));
}
if (SystemContext.SystemContextArm->IFSR & 0xf != 0x00) {
DEBUG ((EFI_D_ERROR, "Instruction %a at 0x%08x, \n", FaultStatusToString (SystemContext.SystemContextArm->IFSR & 0xf), SystemContext.SystemContextArm->IFAR));
}
DEBUG ((EFI_D_ERROR, "\n"));
ASSERT (FALSE);
}