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-rw-r--r--arch/s390/kernel/head64.S3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 3e0341a..c200510 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -41,6 +41,7 @@ startup_continue:
srl %r13,1
GET_IPL_DEVICE
lhi %r1,1 # mode 1 = esame
+ mvi __LC_AR_MODE_ID,1 # set esame flag
slr %r0,%r0 # set cpuid to zero
sigp %r1,%r0,0x12 # switch to esame mode
sam64 # switch to 64 bit mode
@@ -269,6 +270,8 @@ startup_continue:
.quad PARMAREA
.org 0x12000
+.globl s390_readinfo_sccb
+s390_readinfo_sccb:
.Lsccb:
.hword 0x1000 # length, one page
.byte 0x00,0x00,0x00
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