diff options
Diffstat (limited to 'drivers/s390/char/sclp_early.c')
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index c71df0c7dedc..f8e46c22e641 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -221,6 +221,36 @@ static int __init sclp_set_event_mask(struct init_sccb *sccb, return sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_MASK, sccb); } +static struct sclp_core_info sclp_core_info_early __initdata; +static int sclp_core_info_early_valid __initdata; + +static void __init sclp_init_core_info_early(struct read_cpu_info_sccb *sccb) +{ + int rc; + + if (!SCLP_HAS_CPU_INFO) + return; + memset(sccb, 0, sizeof(*sccb)); + sccb->header.length = sizeof(*sccb); + do { + rc = sclp_cmd_sync_early(SCLP_CMDW_READ_CPU_INFO, sccb); + } while (rc == -EBUSY); + if (rc) + return; + if (sccb->header.response_code != 0x0010) + return; + sclp_fill_core_info(&sclp_core_info_early, sccb); + sclp_core_info_early_valid = 1; +} + +int __init _sclp_get_core_info_early(struct sclp_core_info *info) +{ + if (!sclp_core_info_early_valid) + return -EIO; + *info = sclp_core_info_early; + return 0; +} + static long __init sclp_hsa_size_init(struct sdias_sccb *sccb) { sccb_init_eq_size(sccb); @@ -293,6 +323,7 @@ void __init sclp_early_detect(void) void *sccb = &sccb_early; sclp_facilities_detect(sccb); + sclp_init_core_info_early(sccb); sclp_hsa_size_detect(sccb); /* Turn off SCLP event notifications. Also save remote masks in the |