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authorandrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>2010-01-27 02:47:47 +0000
committerandrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>2010-01-27 02:47:47 +0000
commit6f72e28d04348ad4539679949609675b114896e1 (patch)
tree400aead84d74026d523bacb5a23089f588fc5819 /ArmPkg/Drivers
parent3b66da94989fc44890483b67b7d13c031c2f9fdc (diff)
downloadedk2-platforms-6f72e28d04348ad4539679949609675b114896e1.tar.xz
Added a library for the default exception handler and started to add a dissasembler. Cleaned up some issues with BlockIo in BeagleBoard and add some extra info on Ebl devices command to show if a blk device has a file system on it.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9830 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Drivers')
-rw-r--r--ArmPkg/Drivers/CpuDxe/CpuDxe.c1
-rw-r--r--ArmPkg/Drivers/CpuDxe/CpuDxe.h1
-rw-r--r--ArmPkg/Drivers/CpuDxe/CpuDxe.inf2
-rw-r--r--ArmPkg/Drivers/CpuDxe/Exception.c172
-rwxr-xr-xArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm36
-rw-r--r--ArmPkg/Drivers/CpuDxe/Mmu.c13
6 files changed, 37 insertions, 188 deletions
diff --git a/ArmPkg/Drivers/CpuDxe/CpuDxe.c b/ArmPkg/Drivers/CpuDxe/CpuDxe.c
index a4ac97c65d..b51867fda3 100644
--- a/ArmPkg/Drivers/CpuDxe/CpuDxe.c
+++ b/ArmPkg/Drivers/CpuDxe/CpuDxe.c
@@ -53,7 +53,6 @@ CpuFlushCpuDataCache (
IN EFI_CPU_FLUSH_TYPE FlushType
)
{
- DEBUG ((EFI_D_ERROR, "CpuFlushCpuDataCache (%lx, %lx, %x)\n", Start, Length, FlushType));
switch (FlushType) {
case EfiCpuFlushTypeWriteBack:
diff --git a/ArmPkg/Drivers/CpuDxe/CpuDxe.h b/ArmPkg/Drivers/CpuDxe/CpuDxe.h
index 8a71075c65..c8cba81621 100644
--- a/ArmPkg/Drivers/CpuDxe/CpuDxe.h
+++ b/ArmPkg/Drivers/CpuDxe/CpuDxe.h
@@ -27,6 +27,7 @@
#include <Library/PeCoffGetEntryPointLib.h>
#include <Library/UefiLib.h>
#include <Library/CpuLib.h>
+#include <Library/DefaultExceptionHandlerLib.h>
#include <Guid/DebugImageInfoTable.h>
#include <Protocol/Cpu.h>
diff --git a/ArmPkg/Drivers/CpuDxe/CpuDxe.inf b/ArmPkg/Drivers/CpuDxe/CpuDxe.inf
index d4b494536b..99d52f96b4 100644
--- a/ArmPkg/Drivers/CpuDxe/CpuDxe.inf
+++ b/ArmPkg/Drivers/CpuDxe/CpuDxe.inf
@@ -41,6 +41,7 @@
# ExceptionSupport.ARMv6.S | GCC
Mmu.c
+
[Packages]
ArmPkg/ArmPkg.dec
EmbeddedPkg/EmbeddedPkg.dec
@@ -55,6 +56,7 @@
PeCoffGetEntryPointLib
UefiLib
CpuLib
+ DefaultExceptioHandlerLib
[Protocols]
gEfiCpuArchProtocolGuid
diff --git a/ArmPkg/Drivers/CpuDxe/Exception.c b/ArmPkg/Drivers/CpuDxe/Exception.c
index d46971b33c..e313cf3fe9 100644
--- a/ArmPkg/Drivers/CpuDxe/Exception.c
+++ b/ArmPkg/Drivers/CpuDxe/Exception.c
@@ -14,7 +14,6 @@
#include "CpuDxe.h"
-EFI_DEBUG_IMAGE_INFO_TABLE_HEADER *gDebugImageTableHeader = NULL;
VOID
ExceptionHandlersStart (
@@ -123,125 +122,6 @@ RegisterDebuggerInterruptHandler (
-
-CHAR8 *
-GetImageName (
- IN UINT32 FaultAddress,
- OUT UINT32 *ImageBase,
- OUT UINT32 *PeCoffSizeOfHeaders
- )
-{
- EFI_DEBUG_IMAGE_INFO *DebugTable;
- UINTN Entry;
- CHAR8 *Address;
-
-
- DebugTable = gDebugImageTableHeader->EfiDebugImageInfoTable;
- if (DebugTable == NULL) {
- return NULL;
- }
-
- Address = (CHAR8 *)(UINTN)FaultAddress;
- for (Entry = 0; Entry < gDebugImageTableHeader->TableSize; Entry++, DebugTable++) {
- if (DebugTable->NormalImage != NULL) {
- if ((DebugTable->NormalImage->ImageInfoType == EFI_DEBUG_IMAGE_INFO_TYPE_NORMAL) &&
- (DebugTable->NormalImage->LoadedImageProtocolInstance != NULL)) {
- if ((Address >= (CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase) &&
- (Address <= ((CHAR8 *)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase + DebugTable->NormalImage->LoadedImageProtocolInstance->ImageSize))) {
- *ImageBase = (UINT32)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase;
- *PeCoffSizeOfHeaders = PeCoffGetSizeOfHeaders ((VOID *)(UINTN)*ImageBase);
- return PeCoffLoaderGetPdbPointer (DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase);
- }
- }
- }
- }
-
- return NULL;
-}
-
-typedef struct {
- UINT32 Bit;
- CHAR8 Char;
-} CPSR_CHAR;
-
-
-VOID
-CpsrString (
- IN UINT32 Cpsr,
- OUT CHAR8 *ReturnStr
- )
-{
- UINTN Index;
- CHAR8 *Str = ReturnStr;
- CHAR8 *ModeStr;
- CPSR_CHAR CpsrChar[] = {
- { 31, 'n' },
- { 30, 'z' },
- { 29, 'c' },
- { 28, 'v' },
-
- { 9, 'e' },
- { 8, 'a' },
- { 7, 'i' },
- { 6, 'f' },
- { 5, 't' },
- { 0, '?' }
- };
-
- for (Index = 0; CpsrChar[Index].Bit != 0; Index++, Str++) {
- *Str = CpsrChar[Index].Char;
- if ((Cpsr & (1 << CpsrChar[Index].Bit)) != 0) {
- // Concert to upper case if bit is set
- *Str &= ~0x20;
- }
- }
-
- *Str++ = '_';
- *Str = '\0';
-
- switch (Cpsr & 0x1f) {
- case 0x17:
- ModeStr = "abt";
- break;
- case 0x011:
- ModeStr = "fiq";
- break;
- case 0x12:
- ModeStr = "irq";
- break;
- case 0x13:
- ModeStr = "svc";
- break;
- case 0x1f:
- ModeStr = "sys";
- break;
- case 0x1b:
- ModeStr = "und";
- break;
- case 0x10:
- ModeStr = "usr";
- break;
-
- default:
- ModeStr = "???";
- break;
- }
-
- AsciiStrCat (Str, ModeStr);
- return;
-}
-
-CHAR8 *gExceptionTypeString[] = {
- "Reset",
- "Undefined Instruction",
- "SWI",
- "Prefetch Abort",
- "Data Abort",
- "Undefined",
- "IRQ",
- "FIQ"
-};
-
VOID
EFIAPI
CommonCExceptionHandler (
@@ -284,52 +164,7 @@ CommonCExceptionHandler (
return;
}
- //
- // Code after here is the default exception handler... Dump the context
- //
- 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 ();
- CHAR8 *Pdb;
- UINT32 ImageBase;
- UINT32 PeCoffSizeOfHeader;
- UINT32 Offset;
- CHAR8 CpsrStr[32]; // char per bit. Lower 5-bits are mode that is a 3 char string
-
- CpsrString (SystemContext.SystemContextArm->CPSR, CpsrStr);
- DEBUG ((EFI_D_ERROR, "%a\n", CpsrStr));
-
- Pdb = GetImageName (SystemContext.SystemContextArm->PC, &ImageBase, &PeCoffSizeOfHeader);
- Offset = SystemContext.SystemContextArm->PC - ImageBase;
- if (Pdb != NULL) {
- DEBUG ((EFI_D_ERROR, "%a\n", Pdb));
-
- //
- // A PE/COFF image loads its headers into memory so the headers are
- // included in the linked addressess. ELF and Mach-O images do not
- // include the headers so the first byte of the image is usually
- // text (code). If you look at link maps from ELF or Mach-O images
- // you need to subtact out the size of the PE/COFF header to get
- // get the offset that matches the link map.
- //
- DEBUG ((EFI_D_ERROR, "loaded at 0x%08x (PE/COFF offset) 0x%x (ELF or Mach-O offset) 0x%x", ImageBase, Offset, Offset - PeCoffSizeOfHeader));
-
- // If we come from an image it is safe to show the instruction. We know it should not fault
- if ((SystemContext.SystemContextArm->CPSR & 0x20) == 0) {
- // ARM
- DEBUG ((EFI_D_ERROR, "\nFaulting Instruction 0x%08x", *(UINT32 *)(UINTN)SystemContext.SystemContextArm->PC));
- } else {
- // Thumb
- DEBUG ((EFI_D_ERROR, "\nFaulting Instruction 0x%04x", *(UINT16 *)(UINTN)SystemContext.SystemContextArm->PC));
- }
- }
- DEBUG_CODE_END ();
- DEBUG ((EFI_D_ERROR, "\n R0 0x%08x R1 0x%08x R2 0x%08x R3 0x%08x\n", SystemContext.SystemContextArm->R0, SystemContext.SystemContextArm->R1, SystemContext.SystemContextArm->R2, SystemContext.SystemContextArm->R3));
- 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));
-
- ASSERT (FALSE);
+ DefaultExceptionHandler (ExceptionType, SystemContext);
}
@@ -346,11 +181,6 @@ InitializeExceptions (
BOOLEAN Enabled;
EFI_PHYSICAL_ADDRESS Base;
- Status = EfiGetSystemConfigurationTable (&gEfiDebugImageInfoTableGuid, (VOID **)&gDebugImageTableHeader);
- if (EFI_ERROR (Status)) {
- gDebugImageTableHeader = NULL;
- }
-
//
// Disable interrupts
//
diff --git a/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm b/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm
index 6162e1ba50..7411762c72 100755
--- a/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm
+++ b/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm
@@ -101,6 +101,7 @@ ResetEntry
bx R1
UndefinedInstructionEntry
+ sub LR, LR, #4 ; Only -2 for Thumb, adjust in CommonExceptionEntry
srsfd #0x13! ; Store return state on SVC stack
cps #0x13 ; Switch to SVC for common stack
stmfd SP!,{LR} ; Store the link register for the current mode
@@ -112,6 +113,7 @@ UndefinedInstructionEntry
bx R1
SoftwareInterruptEntry
+ sub LR, LR, #4 ; Only -2 for Thumb, adjust in CommonExceptionEntry
srsfd #0x13! ; Store return state on SVC stack
; We are already in SVC mode
stmfd SP!,{LR} ; Store the link register for the current mode
@@ -211,15 +213,26 @@ AsmCommonExceptionEntry
str R1, [SP, #0x40] ; Store it in EFI_SYSTEM_CONTEXT_ARM.CPSR
add R2, SP, #0x38 ; Make R2 point to EFI_SYSTEM_CONTEXT_ARM.LR
- and R1, R1, #0x1f ; Check CPSR to see if User or System Mode
- cmp R1, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1df))
- cmpne R1, #0x10 ;
+ and R3, R1, #0x1f ; Check CPSR to see if User or System Mode
+ cmp R3, #0x1f ; if ((CPSR == 0x10) || (CPSR == 0x1df))
+ cmpne R3, #0x10 ;
stmeqed R2, {lr}^ ; save unbanked lr
; else
stmneed R2, {lr} ; save SVC lr
- ldr R1, [SP, #0x58] ; PC is the LR pushed by srsfd
- str R1, [SP, #0x3c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.PC
+
+ ldr R5, [SP, #0x58] ; PC is the LR pushed by srsfd
+ ; Check to see if we have to adjust for Thumb entry
+ sub r4, r0, #1 ; if (ExceptionType == 1 || ExceptionType ==2)) {
+ cmp r4, #1 ; // UND & SVC have differnt LR adjust for Thumb
+ bhi NoAdjustNeeded
+
+ tst r1, #0x20 ; if ((CPSR & T)) == T) { // Thumb Mode on entry
+ addne R5, R5, #2 ; PC += 2;
+
+NoAdjustNeeded
+
+ str R5, [SP, #0x3c] ; Store it in EFI_SYSTEM_CONTEXT_ARM.PC
sub R1, SP, #0x60 ; We pused 0x60 bytes on the stack
str R1, [SP, #0x34] ; Store it in EFI_SYSTEM_CONTEXT_ARM.SP
@@ -228,12 +241,13 @@ AsmCommonExceptionEntry
mov R1,SP ; R1 is SystemContext
/*
-VOID
-EFIAPI
-CommonCExceptionHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType, R0
- IN OUT EFI_SYSTEM_CONTEXT SystemContext R1
- )
+VOID
+EFIAPI
+CommonCExceptionHandler (
+ IN EFI_EXCEPTION_TYPE ExceptionType, R0
+ IN OUT EFI_SYSTEM_CONTEXT SystemContext R1
+ )
+
*/
blx CommonCExceptionHandler ; Call exception handler
diff --git a/ArmPkg/Drivers/CpuDxe/Mmu.c b/ArmPkg/Drivers/CpuDxe/Mmu.c
index f2669fc32a..e81e58a9b1 100644
--- a/ArmPkg/Drivers/CpuDxe/Mmu.c
+++ b/ArmPkg/Drivers/CpuDxe/Mmu.c
@@ -848,13 +848,15 @@ CpuConvertPagesToUncachedVirtualAddress (
Status = SetMemoryAttributes (Address | VirtualMask, Length, EFI_MEMORY_UC, VirtualMask);
}
+ DEBUG ((DEBUG_INFO | DEBUG_LOAD, "ConvertPagesToUncachedVirtualAddress()\n Unmapped 0x%08lx Mapped 0x%08lx 0x%x bytes\n", Address, Address | VirtualMask, Length));
+
return Status;
}
EFI_STATUS
EFIAPI
-CpuReconvertPagesPages (
+CpuReconvertPages (
IN VIRTUAL_UNCACHED_PAGES_PROTOCOL *This,
IN EFI_PHYSICAL_ADDRESS Address,
IN UINTN Length,
@@ -863,9 +865,10 @@ CpuReconvertPagesPages (
)
{
EFI_STATUS Status;
-DEBUG ((EFI_D_ERROR, "CpuReconvertPagesPages(%lx, %x, %lx, %lx)\n", Address, Length, VirtualMask, Attributes));
-ASSERT (FALSE);
-//
+
+ DEBUG ((DEBUG_INFO | DEBUG_LOAD, "CpuReconvertPages(%lx, %x, %lx, %lx)\n", Address, Length, VirtualMask, Attributes));
+
+ //
// Unmap the alaised Address
//
Status = SetMemoryAttributes (Address | VirtualMask, Length, EFI_MEMORY_WP, 0);
@@ -882,7 +885,7 @@ ASSERT (FALSE);
VIRTUAL_UNCACHED_PAGES_PROTOCOL gVirtualUncachedPages = {
CpuConvertPagesToUncachedVirtualAddress,
- CpuReconvertPagesPages
+ CpuReconvertPages
};