rfid
b . /* prevent speculative execution */
-#ifdef CONFIG_PPC_PSERIES
+#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
/*
* Data area reserved for FWNMI option.
* This address (0x7000) is fixed by the RPA.
.= 0x7000
.globl fwnmi_data_area
fwnmi_data_area:
-#endif /* CONFIG_PPC_PSERIES */
+#endif /* defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) */
/* iSeries does not use the FWNMI stuff, so it is safe to put
* this here, even if we later allow kernels that will boot on
#endif /* CONFIG_PPC_ISERIES */
-#ifdef CONFIG_PPC_PSERIES
+#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
+ /* pseries and powernv need to keep the whole page from
+ * 0x7000 to 0x8000 free for use by the firmware
+ */
. = 0x8000
-#endif /* CONFIG_PPC_PSERIES */
+#endif /* defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) */
/*
* Space for CPU0's segment table.
.globl initial_stab
initial_stab:
.space 4096
+#ifdef CONFIG_PPC_POWERNV
+_GLOBAL(opal_mc_secondary_handler)
+ HMT_MEDIUM
+ SET_SCRATCH0(r13)
+ GET_PACA(r13)
+ clrldi r3,r3,2
+ tovirt(r3,r3)
+ std r3,PACA_OPAL_MC_EVT(r13)
+ ld r13,OPAL_MC_SRR0(r3)
+ mtspr SPRN_SRR0,r13
+ ld r13,OPAL_MC_SRR1(r3)
+ mtspr SPRN_SRR1,r13
+ ld r3,OPAL_MC_GPR3(r3)
+ GET_SCRATCH0(r13)
+ b machine_check_pSeries
+#endif /* CONFIG_PPC_POWERNV */
static struct device_node *opal_node;
static DEFINE_SPINLOCK(opal_write_lock);
+extern u64 opal_mc_secondary_handler[];
int __init early_init_dt_scan_opal(unsigned long node,
const char *uname, int depth, void *data)
{
const void *basep, *entryp;
unsigned long basesz, entrysz;
+ u64 glue;
if (depth != 1 || strcmp(uname, "ibm,opal") != 0)
return 0;
printk("OPAL V1 detected !\n");
}
+ /* Hookup some exception handlers. We use the fwnmi area at 0x7000
+ * to provide the glue space to OPAL
+ */
+ glue = 0x7000;
+ opal_register_exception_handler(OPAL_MACHINE_CHECK_HANDLER,
+ __pa(opal_mc_secondary_handler[0]),
+ glue);
+ glue += 128;
+ opal_register_exception_handler(OPAL_HYPERVISOR_MAINTENANCE_HANDLER,
+ 0, glue);
+ glue += 128;
+ opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue);
+
return 1;
}
return written;
}
+int opal_machine_check(struct pt_regs *regs)
+{
+ struct opal_machine_check_event *opal_evt = get_paca()->opal_mc_evt;
+ struct opal_machine_check_event evt;
+ const char *level, *sevstr, *subtype;
+ static const char *opal_mc_ue_types[] = {
+ "Indeterminate",
+ "Instruction fetch",
+ "Page table walk ifetch",
+ "Load/Store",
+ "Page table walk Load/Store",
+ };
+ static const char *opal_mc_slb_types[] = {
+ "Indeterminate",
+ "Parity",
+ "Multihit",
+ };
+ static const char *opal_mc_erat_types[] = {
+ "Indeterminate",
+ "Parity",
+ "Multihit",
+ };
+ static const char *opal_mc_tlb_types[] = {
+ "Indeterminate",
+ "Parity",
+ "Multihit",
+ };
+
+ /* Copy the event structure and release the original */
+ evt = *opal_evt;
+ opal_evt->in_use = 0;
+
+ /* Print things out */
+ if (evt.version != OpalMCE_V1) {
+ pr_err("Machine Check Exception, Unknown event version %d !\n",
+ evt.version);
+ return 0;
+ }
+ switch(evt.severity) {
+ case OpalMCE_SEV_NO_ERROR:
+ level = KERN_INFO;
+ sevstr = "Harmless";
+ break;
+ case OpalMCE_SEV_WARNING:
+ level = KERN_WARNING;
+ sevstr = "";
+ break;
+ case OpalMCE_SEV_ERROR_SYNC:
+ level = KERN_ERR;
+ sevstr = "Severe";
+ break;
+ case OpalMCE_SEV_FATAL:
+ default:
+ level = KERN_ERR;
+ sevstr = "Fatal";
+ break;
+ }
+
+ printk("%s%s Machine check interrupt [%s]\n", level, sevstr,
+ evt.disposition == OpalMCE_DISPOSITION_RECOVERED ?
+ "Recovered" : "[Not recovered");
+ printk("%s Initiator: %s\n", level,
+ evt.initiator == OpalMCE_INITIATOR_CPU ? "CPU" : "Unknown");
+ switch(evt.error_type) {
+ case OpalMCE_ERROR_TYPE_UE:
+ subtype = evt.u.ue_error.ue_error_type <
+ ARRAY_SIZE(opal_mc_ue_types) ?
+ opal_mc_ue_types[evt.u.ue_error.ue_error_type]
+ : "Unknown";
+ printk("%s Error type: UE [%s]\n", level, subtype);
+ if (evt.u.ue_error.effective_address_provided)
+ printk("%s Effective address: %016llx\n",
+ level, evt.u.ue_error.effective_address);
+ if (evt.u.ue_error.physical_address_provided)
+ printk("%s Physial address: %016llx\n",
+ level, evt.u.ue_error.physical_address);
+ break;
+ case OpalMCE_ERROR_TYPE_SLB:
+ subtype = evt.u.slb_error.slb_error_type <
+ ARRAY_SIZE(opal_mc_slb_types) ?
+ opal_mc_slb_types[evt.u.slb_error.slb_error_type]
+ : "Unknown";
+ printk("%s Error type: SLB [%s]\n", level, subtype);
+ if (evt.u.slb_error.effective_address_provided)
+ printk("%s Effective address: %016llx\n",
+ level, evt.u.slb_error.effective_address);
+ break;
+ case OpalMCE_ERROR_TYPE_ERAT:
+ subtype = evt.u.erat_error.erat_error_type <
+ ARRAY_SIZE(opal_mc_erat_types) ?
+ opal_mc_erat_types[evt.u.erat_error.erat_error_type]
+ : "Unknown";
+ printk("%s Error type: ERAT [%s]\n", level, subtype);
+ if (evt.u.erat_error.effective_address_provided)
+ printk("%s Effective address: %016llx\n",
+ level, evt.u.erat_error.effective_address);
+ break;
+ case OpalMCE_ERROR_TYPE_TLB:
+ subtype = evt.u.tlb_error.tlb_error_type <
+ ARRAY_SIZE(opal_mc_tlb_types) ?
+ opal_mc_tlb_types[evt.u.tlb_error.tlb_error_type]
+ : "Unknown";
+ printk("%s Error type: TLB [%s]\n", level, subtype);
+ if (evt.u.tlb_error.effective_address_provided)
+ printk("%s Effective address: %016llx\n",
+ level, evt.u.tlb_error.effective_address);
+ break;
+ default:
+ case OpalMCE_ERROR_TYPE_UNKNOWN:
+ printk("%s Error type: Unknown\n", level);
+ break;
+ }
+ return evt.severity == OpalMCE_SEV_FATAL ? 0 : 1;
+}
+
static irqreturn_t opal_interrupt(int irq, void *data)
{
uint64_t events;
projects / users / hch / configfs.git / commitdiff