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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 /arch/s390/boot | |
| parent | 5de2322d7b8ecba37152334ebaaddf687fd63a38 (diff) | |
| download | lwn-87fd22e0ae9239f695266d3181b53ad9f758bd74.tar.gz lwn-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 'arch/s390/boot')
| -rw-r--r-- | arch/s390/boot/ipl_parm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/boot/ipl_parm.c b/arch/s390/boot/ipl_parm.c index ca78d6162245..c358f51ed3e5 100644 --- a/arch/s390/boot/ipl_parm.c +++ b/arch/s390/boot/ipl_parm.c @@ -108,6 +108,11 @@ static size_t ipl_block_get_ascii_scpdata(char *dest, size_t size, scp_data_len = ipb->nvme.scp_data_len; scp_data = ipb->nvme.scp_data; break; + case IPL_PBT_ECKD: + scp_data_len = ipb->eckd.scp_data_len; + scp_data = ipb->eckd.scp_data; + break; + default: goto out; } @@ -153,6 +158,7 @@ static void append_ipl_block_parm(void) break; case IPL_PBT_FCP: case IPL_PBT_NVME: + case IPL_PBT_ECKD: rc = ipl_block_get_ascii_scpdata( parm, COMMAND_LINE_SIZE - len - 1, &ipl_block); break; |