[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>

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