aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-04-27 16:01:25 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-04-27 16:01:38 +0200
commit6fc321fd7dd91f0592f37503219196835314fbb7 (patch)
treed512811f8f6761608829c8df44a55a2ada074cdc /drivers/s390
parent29c380f5f06d0c5a320b9bb6f8987065e7b81c91 (diff)
[S390] cio/ipl: Clean interface between cio and ipl code.
Clean interface between cio and ipl code, so Peter stops complaining. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/cio.c38
1 files changed, 10 insertions, 28 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 9cb129ab5be..21af446c1f2 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -1048,37 +1048,19 @@ void reipl_ccw_dev(struct ccw_dev_id *devid)
do_reipl_asm(*((__u32*)&schid));
}
-static struct schib __initdata ipl_schib;
-
-/*
- * ipl_save_parameters gets called very early. It is not allowed to access
- * anything in the bss section at all. The bss section is not cleared yet,
- * but may contain some ipl parameters written by the firmware.
- * These parameters (if present) are copied to 0x2000.
- * To avoid corruption of the ipl parameters, all variables used by this
- * function must reside on the stack or in the data section.
- */
-void ipl_save_parameters(void)
+int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
{
struct subchannel_id schid;
- unsigned int *ipl_ptr;
- void *src, *dst;
+ struct schib schib;
schid = *(struct subchannel_id *)__LC_SUBCHANNEL_ID;
if (!schid.one)
- return;
- if (stsch(schid, &ipl_schib))
- return;
- if (!ipl_schib.pmcw.dnv)
- return;
- ipl_devno = ipl_schib.pmcw.dev;
- ipl_flags |= IPL_DEVNO_VALID;
- if (!ipl_schib.pmcw.qf)
- return;
- ipl_flags |= IPL_PARMBLOCK_VALID;
- ipl_ptr = (unsigned int *)__LC_IPL_PARMBLOCK_PTR;
- src = (void *)(unsigned long)*ipl_ptr;
- dst = (void *)IPL_PARMBLOCK_ORIGIN;
- memmove(dst, src, PAGE_SIZE);
- *ipl_ptr = IPL_PARMBLOCK_ORIGIN;
+ return -ENODEV;
+ if (stsch(schid, &schib))
+ return -ENODEV;
+ if (!schib.pmcw.dnv)
+ return -ENODEV;
+ iplinfo->devno = schib.pmcw.dev;
+ iplinfo->is_qdio = schib.pmcw.qf;
+ return 0;
}