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authorMichael Holzheu <holzheu@de.ibm.com>2006-09-20 15:58:49 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-20 15:58:49 +0200
commitff6b8ea68f4b7353f88b97024f28127e2148aa00 (patch)
tree67ebb74cbbc042d99325ff33c3f80e4b3e0a1c42 /arch/s390/kernel/head64.S
parent331c982d4a6b43cdc0d056956a1cae8a7d6237bf (diff)
downloadop-kernel-dev-ff6b8ea68f4b7353f88b97024f28127e2148aa00.zip
op-kernel-dev-ff6b8ea68f4b7353f88b97024f28127e2148aa00.tar.gz
[S390] ipl/dump on panic.
It is now possible to specify a ccw/fcp dump device which is used to automatically create a system dump in case of a kernel panic. The dump device can be configured under /sys/firmware/dump. In addition it is now possible to specify a ccw/fcp device which is used for the next reboot of Linux. The reipl device can be configured under /sys/firmware/reipl. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/head64.S')
-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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