Commit bfed9d32 authored by Olof Johansson's avatar Olof Johansson Committed by Paul Mackerras
Browse files

[POWERPC] pasemi: Machine check handler

Print out decoded machine check information on PA6T.

Signed-off-by: default avatarOlof Johansson <>
Signed-off-by: default avatarPaul Mackerras <>
parent 39c870d5
......@@ -147,6 +147,48 @@ static void __init pas_progress(char *s, unsigned short hex)
static int pas_machine_check_handler(struct pt_regs *regs)
int cpu = smp_processor_id();
unsigned long srr0, srr1, dsisr;
srr0 = regs->nip;
srr1 = regs->msr;
dsisr = mfspr(SPRN_DSISR);
printk(KERN_ERR "Machine Check on CPU %d\n", cpu);
printk(KERN_ERR "SRR0 0x%016lx SRR1 0x%016lx\n", srr0, srr1);
printk(KERN_ERR "DSISR 0x%016lx DAR 0x%016lx\n", dsisr, regs->dar);
printk(KERN_ERR "Cause:\n");
if (srr1 & 0x200000)
printk(KERN_ERR "Signalled by SDC\n");
if (srr1 & 0x100000) {
printk(KERN_ERR "Load/Store detected error:\n");
if (dsisr & 0x8000)
printk(KERN_ERR "D-cache ECC double-bit error or bus error\n");
if (dsisr & 0x4000)
printk(KERN_ERR "LSU snoop response error\n");
if (dsisr & 0x2000)
printk(KERN_ERR "MMU SLB multi-hit or invalid B field\n");
if (dsisr & 0x1000)
printk(KERN_ERR "Recoverable Duptags\n");
if (dsisr & 0x800)
printk(KERN_ERR "Recoverable D-cache parity error count overflow\n");
if (dsisr & 0x400)
printk(KERN_ERR "TLB parity error count overflow\n");
if (srr1 & 0x80000)
printk(KERN_ERR "Bus Error\n");
if (srr1 & 0x40000)
printk(KERN_ERR "I-side SLB multiple hit\n");
if (srr1 & 0x20000)
printk(KERN_ERR "I-cache parity error hit\n");
/* SRR1[62] is from MSR[62] if recoverable, so pass that back */
return !!(srr1 & 0x2);
* Called very early, MMU is off, device-tree isn't unflattened
......@@ -175,4 +217,5 @@ define_machine(pas) {
.calibrate_decr = generic_calibrate_decr,
.check_legacy_ioport = pas_check_legacy_ioport,
.progress = pas_progress,
.machine_check_exception = pas_machine_check_handler,
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