diff options
| -rw-r--r-- | arch/powerpc/kernel/head_44x.S | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 33 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_fsl_booke.S | 10 |
3 files changed, 30 insertions, 17 deletions
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S index ad071a146a8..b84ec6a2fc9 100644 --- a/arch/powerpc/kernel/head_44x.S +++ b/arch/powerpc/kernel/head_44x.S @@ -211,7 +211,7 @@ skpinv: addi r4,r4,1 /* Increment */ SET_IVOR(12, WatchdogTimer); SET_IVOR(13, DataTLBError); SET_IVOR(14, InstructionTLBError); - SET_IVOR(15, Debug); + SET_IVOR(15, DebugCrit); /* Establish the interrupt vector base */ lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */ @@ -578,7 +578,7 @@ interrupt_base: b InstructionStorage /* Debug Interrupt */ - DEBUG_EXCEPTION + DEBUG_CRIT_EXCEPTION /* * Local functions diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index ba9393f8e77..aefafc6330c 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -56,8 +56,17 @@ * is necessary since the MMU is always on, for Book-E parts, and the stacks * are offset from KERNELBASE. * + * There is some space optimization to be had here if desired. However + * to allow for a common kernel with support for debug exceptions either + * going to critical or their own debug level we aren't currently + * providing configurations that micro-optimize space usage. */ -#define BOOKE_EXCEPTION_STACK_SIZE (8192) +#ifdef CONFIG_44x +#define NUM_EXCEPTION_LVLS 2 +#else +#define NUM_EXCEPTION_LVLS 3 +#endif +#define BOOKE_EXCEPTION_STACK_SIZE (4096 * NUM_EXCEPTION_LVLS) /* CRIT_SPRG only used in critical exception handling */ #define CRIT_SPRG SPRN_SPRG2 @@ -68,7 +77,7 @@ #define CRIT_STACK_TOP (exception_stack_top) /* only on e200 for now */ -#define DEBUG_STACK_TOP (exception_stack_top - 4096) +#define DEBUG_STACK_TOP (exception_stack_top - 8192) #define DEBUG_SPRG SPRN_SPRG6W #ifdef CONFIG_SMP @@ -212,9 +221,8 @@ label: * save (and later restore) the MSR via SPRN_CSRR1, which will still have * the MSR_DE bit set. */ -#ifdef CONFIG_E200 -#define DEBUG_EXCEPTION \ - START_EXCEPTION(Debug); \ +#define DEBUG_DEBUG_EXCEPTION \ + START_EXCEPTION(DebugDebug); \ DEBUG_EXCEPTION_PROLOG; \ \ /* \ @@ -234,8 +242,8 @@ label: cmplw r12,r10; \ blt+ 2f; /* addr below exception vectors */ \ \ - lis r10,Debug@h; \ - ori r10,r10,Debug@l; \ + lis r10,DebugDebug@h; \ + ori r10,r10,DebugDebug@l; \ cmplw r12,r10; \ bgt+ 2f; /* addr above exception vectors */ \ \ @@ -265,9 +273,9 @@ label: 2: mfspr r4,SPRN_DBSR; \ addi r3,r1,STACK_FRAME_OVERHEAD; \ EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, debug_transfer_to_handler, ret_from_debug_exc) -#else -#define DEBUG_EXCEPTION \ - START_EXCEPTION(Debug); \ + +#define DEBUG_CRIT_EXCEPTION \ + START_EXCEPTION(DebugCrit); \ CRITICAL_EXCEPTION_PROLOG; \ \ /* \ @@ -287,8 +295,8 @@ label: cmplw r12,r10; \ blt+ 2f; /* addr below exception vectors */ \ \ - lis r10,Debug@h; \ - ori r10,r10,Debug@l; \ + lis r10,DebugCrit@h; \ + ori r10,r10,DebugCrit@l; \ cmplw r12,r10; \ bgt+ 2f; /* addr above exception vectors */ \ \ @@ -318,7 +326,6 @@ label: 2: mfspr r4,SPRN_DBSR; \ addi r3,r1,STACK_FRAME_OVERHEAD; \ EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, crit_transfer_to_handler, ret_from_crit_exc) -#endif #define INSTRUCTION_STORAGE_EXCEPTION \ START_EXCEPTION(InstructionStorage) \ diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 9f40b3e7710..4ff74414356 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -303,7 +303,10 @@ skpinv: addi r6,r6,1 /* Increment */ SET_IVOR(12, WatchdogTimer); SET_IVOR(13, DataTLBError); SET_IVOR(14, InstructionTLBError); - SET_IVOR(15, Debug); + SET_IVOR(15, DebugDebug); +#if defined(CONFIG_E500) + SET_IVOR(15, DebugCrit); +#endif SET_IVOR(32, SPEUnavailable); SET_IVOR(33, SPEFloatingPointData); SET_IVOR(34, SPEFloatingPointRound); @@ -738,7 +741,10 @@ interrupt_base: /* Debug Interrupt */ - DEBUG_EXCEPTION + DEBUG_DEBUG_EXCEPTION +#if defined(CONFIG_E500) + DEBUG_CRIT_EXCEPTION +#endif /* * Local functions |