aboutsummaryrefslogtreecommitdiffstats
path: root/arch/s390/kernel/head64.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/kernel/head64.S')
-rw-r--r--arch/s390/kernel/head64.S7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 10bc592c3637..9a8263a153cb 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -345,6 +345,13 @@ iplstart:
345 la %r2,.Lreset 345 la %r2,.Lreset
346 lhi %r3,26 346 lhi %r3,26
347 diag %r2,%r3,8 347 diag %r2,%r3,8
348 la %r5,.Lirb
349 stsch 0(%r5) # check if irq is pending
350 tm 30(%r5),0x0f # by verifying if any of the
351 bnz .Lwaitforirq # activity or status control
352 tm 31(%r5),0xff # bits is set in the schib
353 bz .Lnoreset
354.Lwaitforirq:
348 mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw 355 mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw
349.Lwaitrdrirq: 356.Lwaitrdrirq:
350 lpsw .Lrdrwaitpsw 357 lpsw .Lrdrwaitpsw