diff options
Diffstat (limited to 'core/hmi.c')
| -rw-r--r-- | core/hmi.c | 19 |
1 files changed, 17 insertions, 2 deletions
@@ -299,6 +299,7 @@ static bool decode_core_fir(struct cpu_thread *cpu, uint32_t core_id; int i; bool found = false; + int64_t ret; /* Sanity check */ if (!cpu || !hmi_evt) @@ -307,9 +308,23 @@ static bool decode_core_fir(struct cpu_thread *cpu, core_id = pir_to_core_id(cpu->pir); /* Get CORE FIR register value. */ - if (xscom_read(cpu->chip_id, XSCOM_ADDR_P8_EX(core_id, CORE_FIR), - &core_fir) != 0) { + ret = xscom_read(cpu->chip_id, XSCOM_ADDR_P8_EX(core_id, CORE_FIR), + &core_fir); + + if (ret == OPAL_HARDWARE) { prerror("HMI: XSCOM error reading CORE FIR\n"); + /* If the FIR can't be read, we should checkstop. */ + return true; + } else if (ret == OPAL_WRONG_STATE) { + /* + * CPU is asleep, so it probably didn't cause the checkstop. + * If no other HMI cause is found a "catchall" checkstop + * will be raised, so if this CPU should've been awake the + * error will be handled appropriately. + */ + prlog(PR_DEBUG, + "HMI: FIR read failed, chip %d core %d asleep\n", + cpu->chip_id, core_id); return false; } |