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-rw-r--r--arch/s390/kernel/head31.S3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index 0e46077d7140..d8bb68a72527 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -38,6 +38,7 @@ startup:basr %r13,0 # get base
startup_continue:
basr %r13,0 # get base
.LPG1: GET_IPL_DEVICE
+ mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
# move IPL device to lowcore
@@ -274,6 +275,8 @@ startup_continue:
.Lparmaddr: .long PARMAREA
.Lsccbaddr: .long .Lsccb
.org 0x12000
+.globl s390_readinfo_sccb
+s390_readinfo_sccb:
.Lsccb:
.hword 0x1000 # length, one page
.byte 0x00,0x00,0x00
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