diff options
Diffstat (limited to 'cpu/blackfin/traps.c')
| -rw-r--r-- | cpu/blackfin/traps.c | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/cpu/blackfin/traps.c b/cpu/blackfin/traps.c index 2eb45b5..d17c0a1 100644 --- a/cpu/blackfin/traps.c +++ b/cpu/blackfin/traps.c @@ -236,19 +236,60 @@ static void decode_address(char *buf, unsigned long address) sprintf(buf, "<0x%p> /* unknown address */", address); } +static char *strhwerrcause(uint16_t hwerrcause) +{ + switch (hwerrcause) { + case 0x02: return "system mmr error"; + case 0x03: return "external memory addressing error"; + case 0x12: return "performance monitor overflow"; + case 0x18: return "raise 5 instruction"; + default: return "undef"; + } +} + +static char *strexcause(uint16_t excause) +{ + switch (excause) { + case 0x00 ... 0xf: return "custom exception"; + case 0x10: return "single step"; + case 0x11: return "trace buffer full"; + case 0x21: return "undef inst"; + case 0x22: return "illegal inst"; + case 0x23: return "dcplb prot violation"; + case 0x24: return "misaligned data"; + case 0x25: return "unrecoverable event"; + case 0x26: return "dcplb miss"; + case 0x27: return "multiple dcplb hit"; + case 0x28: return "emulation watchpoint"; + case 0x2a: return "misaligned inst"; + case 0x2b: return "icplb prot violation"; + case 0x2c: return "icplb miss"; + case 0x2d: return "multiple icplb hit"; + case 0x2e: return "illegal use of supervisor resource"; + default: return "undef"; + } +} + void dump(struct pt_regs *fp) { char buf[150]; size_t i; + uint16_t hwerrcause, excause; if (!ENABLE_DUMP) return; + /* fp->ipend is garbage, so load it ourself */ + fp->ipend = bfin_read_IPEND(); + + hwerrcause = (fp->seqstat & HWERRCAUSE) >> HWERRCAUSE_P; + excause = (fp->seqstat & EXCAUSE) >> EXCAUSE_P; + printf("SEQUENCER STATUS:\n"); printf(" SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n", fp->seqstat, fp->ipend, fp->syscfg); - printf(" HWERRCAUSE: 0x%lx\n", (fp->seqstat & HWERRCAUSE) >> HWERRCAUSE_P); - printf(" EXCAUSE : 0x%lx\n", (fp->seqstat & EXCAUSE) >> EXCAUSE_P); + printf(" HWERRCAUSE: 0x%lx: %s\n", hwerrcause, strhwerrcause(hwerrcause)); + printf(" EXCAUSE : 0x%lx: %s\n", excause, strexcause(excause)); for (i = 6; i <= 15; ++i) { if (fp->ipend & (1 << i)) { decode_address(buf, bfin_read32(EVT0 + 4*i)); @@ -263,8 +304,9 @@ void dump(struct pt_regs *fp) printf(" RETX: %s\n", buf); decode_address(buf, fp->rets); printf(" RETS: %s\n", buf); + /* we lie and store RETI in "pc" */ decode_address(buf, fp->pc); - printf(" PC : %s\n", buf); + printf(" RETI: %s\n", buf); if (fp->seqstat & EXCAUSE) { decode_address(buf, bfin_read_DCPLB_FAULT_ADDR()); @@ -344,10 +386,6 @@ void bfin_panic(struct pt_regs *regs) ); dump(regs); dump_bfin_trace_buffer(); - printf( - "\n" - "Please reset the board\n" - "\n" - ); + puts("\n"); bfin_reset_or_hang(); } |