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-rw-r--r--arch/s390/kernel/head.S19
-rw-r--r--arch/s390/kernel/head64.S19
2 files changed, 34 insertions, 4 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 658e8de74f8..fc8bf5e285f 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -345,10 +345,25 @@ iplstart:
bno .Lnoreset
la %r2,.Lreset
lhi %r3,26
- .long 0x83230008
+ diag %r2,%r3,8
+ mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw
+.Lwaitrdrirq:
+ lpsw .Lrdrwaitpsw
+.Lrdrint:
+ c %r1,0xb8 # compare subchannel number
+ bne .Lwaitrdrirq
+ la %r5,.Lirb
+ tsch 0(%r5)
.Lnoreset:
+ b .Lnoload
+
+ .align 8
+.Lrdrnewpsw:
+ .long 0x00080000,0x80000000+.Lrdrint
+.Lrdrwaitpsw:
+ .long 0x020a0000,0x80000000+.Lrdrint
#endif
-
+
#
# everything loaded, go for it
#
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 8e2caf9dc18..f525c0c2125 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -344,10 +344,25 @@ iplstart:
bno .Lnoreset
la %r2,.Lreset
lhi %r3,26
- .long 0x83230008
+ diag %r2,%r3,8
+ mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw
+.Lwaitrdrirq:
+ lpsw .Lrdrwaitpsw
+.Lrdrint:
+ c %r1,0xb8 # compare subchannel number
+ bne .Lwaitrdrirq
+ la %r5,.Lirb
+ tsch 0(%r5)
.Lnoreset:
+ b .Lnoload
+
+ .align 8
+.Lrdrnewpsw:
+ .long 0x00080000,0x80000000+.Lrdrint
+.Lrdrwaitpsw:
+ .long 0x020a0000,0x80000000+.Lrdrint
#endif
-
+
#
# everything loaded, go for it
#