Merge git://www.denx.de/git/u-boot

1 files changed, 142 insertions, 34 deletions

diff --git a/cpu/ppc4xx/traps.c b/cpu/ppc4xx/traps.c
index 6aecca2..eb9420e 100644..100755
--- a/cpu/ppc4xx/traps.c
+++ b/cpu/ppc4xx/traps.c
@@ -36,6 +36,8 @@
 #include <command.h>
 #include <asm/processor.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
 int (*debugger_exception_handler)(struct pt_regs *) = 0;
 #endif
@@ -45,8 +47,7 @@ extern unsigned long search_exception_table(unsigned long);
 
 /* THIS NEEDS CHANGING to use the board info structure.
  */
-#define END_OF_MEM	0x00400000
-
+#define END_OF_MEM	(gd->bd->bi_memstart + gd->bd->bi_memsize)
 
 static __inline__ void set_tsr(unsigned long val)
 {
@@ -110,7 +111,7 @@ void show_regs(struct pt_regs * regs)
 {
 	int i;
 
-	printf("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DAR: %08lX\n",
+	printf("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DEAR: %08lX\n",
 	       regs->nip, regs->xer, regs->link, regs, regs->trap, regs->dar);
 	printf("MSR: %08lx EE: %01x PR: %01x FP: %01x ME: %01x IR/DR: %01x%01x\n",
 	       regs->msr, regs->msr&MSR_EE ? 1 : 0, regs->msr&MSR_PR ? 1 : 0,
@@ -120,14 +121,12 @@ void show_regs(struct pt_regs * regs)
 
 	printf("\n");
 	for (i = 0;  i < 32;  i++) {
-		if ((i % 8) == 0)
-		{
+		if ((i % 8) == 0) {
 			printf("GPR%02d: ", i);
 		}
 
 		printf("%08lX ", regs->gpr[i]);
-		if ((i % 8) == 7)
-		{
+		if ((i % 8) == 7) {
 			printf("\n");
 		}
 	}
@@ -139,13 +138,16 @@ _exception(int signr, struct pt_regs *regs)
 {
 	show_regs(regs);
 	print_backtrace((unsigned long *)regs->gpr[1]);
-	panic("Exception in kernel pc %lx signal %d",regs->nip,signr);
+	panic("Exception");
 }
 
 void
 MachineCheckException(struct pt_regs *regs)
 {
-	unsigned long fixup;
+	unsigned long fixup, val;
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	u32 value2;
+#endif
 
 	/* Probing PCI using config cycles cause this exception
 	 * when a device is not present.  Catch it and return to
@@ -161,26 +163,132 @@ MachineCheckException(struct pt_regs *regs)
 		return;
 #endif
 
-	printf("Machine check in kernel mode.\n");
+	printf("Machine Check Exception.\n");
 	printf("Caused by (from msr): ");
-	printf("regs %p ",regs);
-	switch( regs->msr & 0x000F0000) {
-	case (0x80000000>>12):
-		printf("Machine check signal - probably due to mm fault\n"
-		       "with mmu off\n");
+	printf("regs %p ", regs);
+
+	val = get_esr();
+
+#if !defined(CONFIG_440)
+	if (val& ESR_IMCP) {
+		printf("Instruction");
+		mtspr(ESR, val & ~ESR_IMCP);
+	} else {
+		printf("Data");
+	}
+	printf(" machine check.\n");
+
+#elif defined(CONFIG_440)
+	if (val& ESR_IMCP){
+		printf("Instruction Synchronous Machine Check exception\n");
+		mtspr(SPRN_ESR, val & ~ESR_IMCP);
+	} else {
+		val = mfspr(MCSR);
+		if (val & MCSR_IB)
+			printf("Instruction Read PLB Error\n");
+		if (val & MCSR_DRB)
+			printf("Data Read PLB Error\n");
+		if (val & MCSR_DWB)
+			printf("Data Write PLB Error\n");
+		if (val & MCSR_TLBP)
+			printf("TLB Parity Error\n");
+		if (val & MCSR_ICP){
+			/*flush_instruction_cache(); */
+			printf("I-Cache Parity Error\n");
+		}
+		if (val & MCSR_DCSP)
+			printf("D-Cache Search Parity Error\n");
+		if (val & MCSR_DCFP)
+			printf("D-Cache Flush Parity Error\n");
+		if (val & MCSR_IMPE)
+			printf("Machine Check exception is imprecise\n");
+
+		/* Clear MCSR */
+		mtspr(SPRN_MCSR, val);
+	}
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	mfsdram(DDR0_00, val) ;
+	printf("DDR0: DDR0_00 %p\n", val);
+	val = (val >> 16) & 0xff;
+	if (val & 0x80)
+		printf("DDR0: At least one interrupt active\n");
+	if (val & 0x40)
+		printf("DDR0: DRAM initialization complete.\n");
+	if (val & 0x20)
+		printf("DDR0: Multiple uncorrectable ECC events.\n");
+	if (val & 0x10)
+		printf("DDR0: Single uncorrectable ECC event.\n");
+	if (val & 0x08)
+		printf("DDR0: Multiple correctable ECC events.\n");
+	if (val & 0x04)
+		printf("DDR0: Single correctable ECC event.\n");
+	if (val & 0x02)
+		printf("Multiple accesses outside the defined"
+		       " physical memory space detected\n");
+	if (val & 0x01)
+		printf("DDR0: Single access outside the defined"
+		       " physical memory space detected.\n");
+
+	mfsdram(DDR0_01, val);
+	val = (val >> 8) & 0x7;
+	switch (val ) {
+	case 0:
+		printf("DDR0: Write Out-of-Range command\n");
+		break;
+	case 1:
+		printf("DDR0: Read Out-of-Range command\n");
 		break;
-	case (0x80000000>>13):
-		printf("Transfer error ack signal\n");
+	case 2:
+		printf("DDR0: Masked write Out-of-Range command\n");
 		break;
-	case (0x80000000>>14):
-		printf("Data parity signal\n");
+	case 4:
+		printf("DDR0: Wrap write Out-of-Range command\n");
 		break;
-	case (0x80000000>>15):
-		printf("Address parity signal\n");
+	case 5:
+		printf("DDR0: Wrap read Out-of-Range command\n");
 		break;
 	default:
-		printf("Unknown values in msr\n");
+		mfsdram(DDR0_01, value2);
+		printf("DDR0: No DDR0 error know 0x%x %p\n", val, value2);
 	}
+	mfsdram(DDR0_23, val);
+	if ( (val >> 16) & 0xff)
+		printf("DDR0: Syndrome for correctable ECC event 0x%x\n",
+		       (val >> 16) & 0xff);
+	mfsdram(DDR0_23, val);
+	if ( (val >> 8) & 0xff)
+		printf("DDR0: Syndrome for uncorrectable ECC event 0x%x\n",
+		       (val >> 8) & 0xff);
+	mfsdram(DDR0_33, val);
+	if (val)
+		printf("DDR0: Address of command that caused an "
+		       "Out-of-Range interrupt %p\n", val);
+	mfsdram(DDR0_34, val);
+	if (val)
+		printf("DDR0: Address of uncorrectable ECC event %p\n", val);
+	mfsdram(DDR0_35, val);
+	if (val)
+		printf("DDR0: Address of uncorrectable ECC event %p\n", val);
+	mfsdram(DDR0_36, val);
+	if (val)
+		printf("DDR0: Data of uncorrectable ECC event 0x%08x\n", val);
+	mfsdram(DDR0_37, val);
+	if (val)
+		printf("DDR0: Data of uncorrectable ECC event 0x%08x\n", val);
+	mfsdram(DDR0_38, val);
+	if (val)
+		printf("DDR0: Address of correctable ECC event %p\n", val);
+	mfsdram(DDR0_39, val);
+	if (val)
+		printf("DDR0: Address of correctable ECC event %p\n", val);
+	mfsdram(DDR0_40, val);
+	if (val)
+		printf("DDR0: Data of correctable ECC event 0x%08x\n", val);
+	mfsdram(DDR0_41, val);
+	if (val)
+		printf("DDR0: Data of correctable ECC event 0x%08x\n", val);
+#endif /* CONFIG_440EPX */
+#endif /* CONFIG_440 */
 	show_regs(regs);
 	print_backtrace((unsigned long *)regs->gpr[1]);
 	panic("machine check");
@@ -224,7 +332,7 @@ ProgramCheckException(struct pt_regs *regs)
 }
 
 void
-PITException(struct pt_regs *regs)
+DecrementerPITException(struct pt_regs *regs)
 {
 	/*
 	 * Reset PIT interrupt
@@ -272,17 +380,17 @@ addr_probe(uint *addr)
 
 	__asm__ __volatile__(			\
 		"1:	lwz %0,0(%1)\n"		\
-						"	eieio\n"		\
-						"	li %0,0\n"		\
-						"2:\n"				\
-						".section .fixup,\"ax\"\n"	\
-						"3:	li %0,-1\n"		\
-						"	b 2b\n"			\
-						".section __ex_table,\"a\"\n"	\
-						"	.align 2\n"		\
-						"	.long 1b,3b\n"		\
-						".text"				\
-						: "=r" (retval) : "r"(addr));
+		"	eieio\n"		\
+		"	li %0,0\n"		\
+		"2:\n"				\
+		".section .fixup,\"ax\"\n"	\
+		"3:	li %0,-1\n"		\
+		"	b 2b\n"			\
+		".section __ex_table,\"a\"\n"	\
+		"	.align 2\n"		\
+		"	.long 1b,3b\n"		\
+		".text"				\
+		: "=r" (retval) : "r"(addr));
 
 	return (retval);
 #endif