diff options
Diffstat (limited to 'hw/slw.c')
| -rw-r--r-- | hw/slw.c | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -1254,12 +1254,41 @@ static void slw_patch_regs(struct proc_chip *chip) static void slw_init_chip_p9(struct proc_chip *chip) { struct cpu_thread *c; + int rc; prlog(PR_DEBUG, "SLW: Init chip 0x%x\n", chip->id); /* At power ON setup inits for power-mgt */ for_each_available_core_in_chip(c, chip->id) slw_set_overrides_p9(chip, c); + + if (!chip->homer_base) { + log_simple_error(&e_info(OPAL_RC_SLW_REG), + "SLW: HOMER base not set %x\n", + chip->id); + return; + } + + prlog(PR_NOTICE, "SLW: Configuring self-restore for HRMOR\n"); + + /* Should this be for_each_present_cpu() ? */ + for_each_available_cpu(c) { + if (c->chip_id != chip->id) + continue; + + /* + * Clear HRMOR. Need to update only for thread + * 0 of each core. Doing it anyway for all threads + */ + rc = p9_stop_save_cpureg((void *)chip->homer_base, + P9_STOP_SPR_HRMOR, 0, + c->pir); + if (rc) { + log_simple_error(&e_info(OPAL_RC_SLW_REG), + "SLW: Failed to set HRMOR for CPU %x,RC=0x%x\n", + c->pir, rc); + } + } } static void slw_init_chip(struct proc_chip *chip) { |