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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-25 13:39:19 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-25 13:39:12 +0100
commite37f50e1811d68170e4d58a087cf634b2bf1cef9 (patch)
tree49296845bd5e651ca7ec70f1dedca6db8deedb66 /arch/s390/kernel/head31.S
parentb3b59d3339c907b1dec3ce19f62b2a7f120d142d (diff)
downloadblackbird-op-linux-e37f50e1811d68170e4d58a087cf634b2bf1cef9.tar.gz
blackbird-op-linux-e37f50e1811d68170e4d58a087cf634b2bf1cef9.zip
[S390] Add processor type march=z10 and a processor type safety check.
This patch adds the code generation option for IBM System z10 and adds a check in head[31,64].S to prevents the execution of a kernel compiled for a new processor type on an old machine. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/head31.S')
-rw-r--r--arch/s390/kernel/head31.S27
1 files changed, 3 insertions, 24 deletions
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index a816e2de32b9..7add8454773b 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -10,34 +10,13 @@
*
*/
-#
-# startup-code at 0x10000, running in absolute addressing mode
-# this is called either by the ipl loader or directly by PSW restart
-# or linload or SALIPL
-#
- .org 0x10000
-startup:basr %r13,0 # get base
-.LPG0: l %r13,0f-.LPG0(%r13)
- b 0(%r13)
-0: .long startup_continue
-
-#
-# params at 10400 (setup.h)
-#
- .org PARMAREA
- .long 0,0 # IPL_DEVICE
- .long 0,0 # INITRD_START
- .long 0,0 # INITRD_SIZE
-
- .org COMMAND_LINE
- .byte "root=/dev/ram0 ro"
- .byte 0
-
.org 0x11000
startup_continue:
basr %r13,0 # get base
-.LPG1: mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
+.LPG1:
+
+ 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
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