diff options
Diffstat (limited to 'arch/s390')
-rw-r--r-- | arch/s390/kernel/head.S | 7 | ||||
-rw-r--r-- | arch/s390/kernel/head64.S | 7 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index d12cff11b4bc..2710e66fefba 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S | |||
@@ -346,6 +346,13 @@ iplstart: | |||
346 | la %r2,.Lreset | 346 | la %r2,.Lreset |
347 | lhi %r3,26 | 347 | lhi %r3,26 |
348 | diag %r2,%r3,8 | 348 | diag %r2,%r3,8 |
349 | la %r5,.Lirb | ||
350 | stsch 0(%r5) # check if irq is pending | ||
351 | tm 30(%r5),0x0f # by verifying if any of the | ||
352 | bnz .Lwaitforirq # activity or status control | ||
353 | tm 31(%r5),0xff # bits is set in the schib | ||
354 | bz .Lnoreset | ||
355 | .Lwaitforirq: | ||
349 | mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw | 356 | mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw |
350 | .Lwaitrdrirq: | 357 | .Lwaitrdrirq: |
351 | lpsw .Lrdrwaitpsw | 358 | lpsw .Lrdrwaitpsw |
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 |