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| author | Sven Schnelle <svens@linux.ibm.com> | 2022-10-05 10:17:40 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-12-06 16:18:21 +0100 |
| commit | 87fd22e0ae9239f695266d3181b53ad9f758bd74 (patch) | |
| tree | 902546e6ac5f1457809d30ad8d3f7a513c8eda61 /drivers/s390 | |
| parent | vfio/ccw: identify CCW data addresses as physical (diff) | |
| download | linux-87fd22e0ae9239f695266d3181b53ad9f758bd74.tar.xz linux-87fd22e0ae9239f695266d3181b53ad9f758bd74.zip | |
s390/ipl: add eckd support
This adds support to IPL from ECKD DASDs to linux.
It introduces a few sysfs files in /sys/firmware/reipl/eckd:
bootprog: the boot program selector
clear: whether to issue a diag308 LOAD_NORMAL or LOAD_CLEAR
device: the device to ipl from
br_chr: Cylinder/Head/Record number to read the bootrecord from.
Might be '0' or 'auto' if it should be read from the
volume label.
scpdata: data to be passed to the ipl'd program.
The new ipl type is called 'eckd'.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index d15b0d541de3..c1c70a161c0e 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -57,8 +57,10 @@ static void __init sclp_early_facilities_detect(void) sclp.has_diag318 = !!(sccb->byte_134 & 0x80); sclp.has_iplcc = !!(sccb->byte_134 & 0x02); } - if (sccb->cpuoff > 137) + if (sccb->cpuoff > 137) { sclp.has_sipl = !!(sccb->cbl & 0x4000); + sclp.has_sipl_eckd = !!(sccb->cbl & 0x2000); + } sclp.rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2; sclp.rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2; sclp.rzm <<= 20; |