diff options
Diffstat (limited to 'cpu/ppc4xx/traps.c')
| -rw-r--r--[-rwxr-xr-x] | cpu/ppc4xx/traps.c | 63 |
1 files changed, 39 insertions, 24 deletions
diff --git a/cpu/ppc4xx/traps.c b/cpu/ppc4xx/traps.c index eb9420e57..f5365cb76 100755..100644 --- a/cpu/ppc4xx/traps.c +++ b/cpu/ppc4xx/traps.c @@ -38,7 +38,7 @@ DECLARE_GLOBAL_DATA_PTR; -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#if defined(CONFIG_CMD_KGDB) int (*debugger_exception_handler)(struct pt_regs *) = 0; #endif @@ -78,7 +78,7 @@ static __inline__ unsigned long get_esr(void) #define ESR_DIZ 0x00400000 #define ESR_U0F 0x00008000 -#if (CONFIG_COMMANDS & CFG_CMD_BEDBUG) +#if defined(CONFIG_CMD_BEDBUG) extern void do_bedbug_breakpoint(struct pt_regs *); #endif @@ -147,18 +147,25 @@ MachineCheckException(struct pt_regs *regs) unsigned long fixup, val; #if defined(CONFIG_440EPX) || defined(CONFIG_440GRX) u32 value2; + int corr_ecc = 0; + int uncorr_ecc = 0; #endif - /* Probing PCI using config cycles cause this exception - * when a device is not present. Catch it and return to - * the PCI exception handler. + /* Probing PCI(E) using config cycles may cause this exception + * when a device is not present. To gracefully recover in such + * scenarios config read/write routines need to be instrumented in + * order to return via fixup handler. For examples refer to + * pcie_in_8(), pcie_in_le16() and pcie_in_le32() */ if ((fixup = search_exception_table(regs->nip)) != 0) { regs->nip = fixup; + val = mfspr(MCSR); + /* Clear MCSR */ + mtspr(SPRN_MCSR, val); return; } -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#if defined(CONFIG_CMD_KGDB) if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -214,14 +221,22 @@ MachineCheckException(struct pt_regs *regs) printf("DDR0: At least one interrupt active\n"); if (val & 0x40) printf("DDR0: DRAM initialization complete.\n"); - if (val & 0x20) + if (val & 0x20) { printf("DDR0: Multiple uncorrectable ECC events.\n"); - if (val & 0x10) + uncorr_ecc = 1; + } + if (val & 0x10) { printf("DDR0: Single uncorrectable ECC event.\n"); - if (val & 0x08) + uncorr_ecc = 1; + } + if (val & 0x08) { printf("DDR0: Multiple correctable ECC events.\n"); - if (val & 0x04) + corr_ecc = 1; + } + if (val & 0x04) { printf("DDR0: Single correctable ECC event.\n"); + corr_ecc = 1; + } if (val & 0x02) printf("Multiple accesses outside the defined" " physical memory space detected\n"); @@ -252,11 +267,11 @@ MachineCheckException(struct pt_regs *regs) printf("DDR0: No DDR0 error know 0x%x %p\n", val, value2); } mfsdram(DDR0_23, val); - if ( (val >> 16) & 0xff) + if (((val >> 16) & 0xff) && corr_ecc) printf("DDR0: Syndrome for correctable ECC event 0x%x\n", (val >> 16) & 0xff); mfsdram(DDR0_23, val); - if ( (val >> 8) & 0xff) + if (((val >> 8) & 0xff) && uncorr_ecc) printf("DDR0: Syndrome for uncorrectable ECC event 0x%x\n", (val >> 8) & 0xff); mfsdram(DDR0_33, val); @@ -264,28 +279,28 @@ MachineCheckException(struct pt_regs *regs) printf("DDR0: Address of command that caused an " "Out-of-Range interrupt %p\n", val); mfsdram(DDR0_34, val); - if (val) + if (val && uncorr_ecc) printf("DDR0: Address of uncorrectable ECC event %p\n", val); mfsdram(DDR0_35, val); - if (val) + if (val && uncorr_ecc) printf("DDR0: Address of uncorrectable ECC event %p\n", val); mfsdram(DDR0_36, val); - if (val) + if (val && uncorr_ecc) printf("DDR0: Data of uncorrectable ECC event 0x%08x\n", val); mfsdram(DDR0_37, val); - if (val) + if (val && uncorr_ecc) printf("DDR0: Data of uncorrectable ECC event 0x%08x\n", val); mfsdram(DDR0_38, val); - if (val) + if (val && corr_ecc) printf("DDR0: Address of correctable ECC event %p\n", val); mfsdram(DDR0_39, val); - if (val) + if (val && corr_ecc) printf("DDR0: Address of correctable ECC event %p\n", val); mfsdram(DDR0_40, val); - if (val) + if (val && corr_ecc) printf("DDR0: Data of correctable ECC event 0x%08x\n", val); mfsdram(DDR0_41, val); - if (val) + if (val && corr_ecc) printf("DDR0: Data of correctable ECC event 0x%08x\n", val); #endif /* CONFIG_440EPX */ #endif /* CONFIG_440 */ @@ -297,7 +312,7 @@ MachineCheckException(struct pt_regs *regs) void AlignmentException(struct pt_regs *regs) { -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#if defined(CONFIG_CMD_KGDB) if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -312,7 +327,7 @@ ProgramCheckException(struct pt_regs *regs) { long esr_val; -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#if defined(CONFIG_CMD_KGDB) if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -349,7 +364,7 @@ DecrementerPITException(struct pt_regs *regs) void UnknownException(struct pt_regs *regs) { -#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#if defined(CONFIG_CMD_KGDB) if (debugger_exception_handler && (*debugger_exception_handler)(regs)) return; #endif @@ -364,7 +379,7 @@ DebugException(struct pt_regs *regs) { printf("Debugger trap at @ %lx\n", regs->nip ); show_regs(regs); -#if (CONFIG_COMMANDS & CFG_CMD_BEDBUG) +#if defined(CONFIG_CMD_BEDBUG) do_bedbug_breakpoint( regs ); #endif } |