Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

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 <olof@lixom.net>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 39c870d5

arch/powerpc/platforms/pasemi/setup.c

+43 −0
Original line number Diff line number Diff line
@@ -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,

};