[U-Boot-Users] [PATCH]PPC440EPx Emit DDR0 registers on machine check interrupt

[Niklaus Giger]

Signed-off-by: Niklaus Giger <niklaus.giger at nestal.com>
---
 cpu/ppc4xx/traps.c |  104 
+++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 103 insertions(+), 1 deletions(-)
 mode change 100644 => 100755 cpu/ppc4xx/traps.c

diff --git a/cpu/ppc4xx/traps.c b/cpu/ppc4xx/traps.c
old mode 100644
new mode 100755
index 7c44a29..0607060
--- a/cpu/ppc4xx/traps.c
+++ b/cpu/ppc4xx/traps.c
@@ -203,7 +203,109 @@ MachineCheckException(struct pt_regs *regs)
 		/* Clear MCSR */
 		mtspr(SPRN_MCSR, val);
 	}
-#endif
+#if defined(CONFIG_440EPx)
+	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 2:
+		printf("DDR0: Masked write Out-of-Range command\n");
+		break;
+	case 4:
+		printf("DDR0: Wrap write Out-of-Range command\n");
+		break;
+	case 5:
+		printf("DDR0: Wrap read Out-of-Range command\n");
+		break;
+	default:
+		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");
-- 
1.5.2
-- 
Niklaus Giger
Netstal Maschinen AG
CH-8752 Näfels