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Add machine check register printing

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This will print out the Memory Subsystem Status Register on MPC745x (G4+ class),
and the Machine Check Status Register on Book-E class CPUs, to aid in debugging
machine checks.  Other relevant registers, for other CPUs, can be added in the
future.
This commit is contained in:
Justin Hibbits 2015-07-04 18:16:41 +00:00
parent a6c4189636
commit 398973f809
2 changed files with 20 additions and 0 deletions
sys/powerpc
include
spr.h
powerpc
trap.c

8
sys/powerpc/include/spr.h

@ -527,6 +527,14 @@
#define MSSCR0_ABD 0x00100000 /* 11: address bus driven (read-only) */
#define MSSCR0_MBZ 0x000fffff /* 12-31: must be zero */
#define MSSCR0_L2PFE 0x00000003 /* 30-31: L2 prefetch enable */
#define SPR_MSSSR0 0x3f7 /* .6. Memory Subsystem Status Register (MPC745x) */
#define MSSSR0_L2TAG 0x00040000 /* 13: L2 tag parity error */
#define MSSSR0_L2DAT 0x00020000 /* 14: L2 data parity error */
#define MSSSR0_L3TAG 0x00010000 /* 15: L3 tag parity error */
#define MSSSR0_L3DAT 0x00008000 /* 16: L3 data parity error */
#define MSSSR0_APE 0x00004000 /* 17: Address parity error */
#define MSSSR0_DPE 0x00002000 /* 18: Data parity error */
#define MSSSR0_TEA 0x00001000 /* 19: Bus transfer error acknowledge */
#define SPR_LDSTCR 0x3f8 /* .6. Load/Store Control Register */
#define SPR_L2PM 0x3f8 /* .6. L2 Private Memory Control Register */
#define SPR_L2CR 0x3f9 /* .6. L2 Control Register */

12
sys/powerpc/powerpc/trap.c

@ -400,6 +400,7 @@ trap_fatal(struct trapframe *frame)
static void
printtrap(u_int vector, struct trapframe *frame, int isfatal, int user)
{
uint16_t ver;
printf("\n");
printf("%s %s trap:\n", isfatal ? "fatal" : "handled",
@ -421,6 +422,17 @@ printtrap(u_int vector, struct trapframe *frame, int isfatal, int user)
case EXC_ITMISS:
printf(" virtual address = 0x%" PRIxPTR "\n", frame->srr0);
break;
case EXC_MCHK:
ver = mfpvr() >> 16;
#if defined(AIM)
if (MPC745X_P(ver))
printf(" msssr0 = 0x%x\n",
mfspr(SPR_MSSSR0));
#elif defined(BOOKE)
printf(" mcsr = 0x%x\n",
mfspr(SPR_MCSR));
#endif
break;
}
#ifdef BOOKE
printf(" esr = 0x%" PRIxPTR "\n",