[PATCH] s390: merge common parts of head.S and head64.S

Merge common parts of head.S and head64.S into head.S and move architecture
specific parts to head31.S and head64.S respectively.  Saves us ~500 lines
of duplicated assembly code.

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 9 insertions, 529 deletions

diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index d9be8f9..f08c06f 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -1,482 +1,17 @@
 /*
- *  arch/s390/kernel/head.S
+ * arch/s390/kernel/head64.S
  *
- *  S390 version
- *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Author(s): Hartmut Penner (hp@de.ibm.com),
- *               Martin Schwidefsky (schwidefsky@de.ibm.com),
- *               Rob van der Heij (rvdhei@iae.nl)
+ * (C) Copyright IBM Corp. 1999,2005
+ *
+ *   Author(s):	Hartmut Penner <hp@de.ibm.com>
+ *		Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *		Rob van der Heij <rvdhei@iae.nl>
+ *		Heiko Carstens <heiko.carstens@de.ibm.com>
  *
- * There are 5 different IPL methods
- *  1) load the image directly into ram at address 0 and do an PSW restart
- *  2) linload will load the image from address 0x10000 to memory 0x10000
- *     and start the code thru LPSW 0x0008000080010000 (VM only, deprecated)
- *  3) generate the tape ipl header, store the generated image on a tape
- *     and ipl from it
- *     In case of SL tape you need to IPL 5 times to get past VOL1 etc
- *  4) generate the vm reader ipl header, move the generated image to the
- *     VM reader (use option NOH!) and do a ipl from reader (VM only)
- *  5) direct call of start by the SALIPL loader
- *  We use the cpuid to distinguish between VM and native ipl
- *  params for kernel are pushed to 0x10400 (see setup.h)
-
-    Changes: 
-    Okt 25 2000 <rvdheij@iae.nl>
-	added code to skip HDR and EOF to allow SL tape IPL (5 retries)
-	changed first CCW from rewind to backspace block
-
  */
 
-#include <linux/config.h>
-#include <asm/setup.h>
-#include <asm/lowcore.h>
-#include <asm/asm-offsets.h>
-#include <asm/thread_info.h>
-#include <asm/page.h>
-
-#ifndef CONFIG_IPL
-        .org   0
-        .long  0x00080000,0x80000000+startup   # Just a restart PSW
-#else
-#ifdef CONFIG_IPL_TAPE
-#define IPL_BS 1024
-        .org   0
-        .long  0x00080000,0x80000000+iplstart  # The first 24 bytes are loaded
-        .long  0x27000000,0x60000001           # by ipl to addresses 0-23.
-        .long  0x02000000,0x20000000+IPL_BS    # (a PSW and two CCWs).
-        .long  0x00000000,0x00000000           # external old psw
-        .long  0x00000000,0x00000000           # svc old psw
-        .long  0x00000000,0x00000000           # program check old psw
-        .long  0x00000000,0x00000000           # machine check old psw
-        .long  0x00000000,0x00000000           # io old psw
-        .long  0x00000000,0x00000000
-        .long  0x00000000,0x00000000
-        .long  0x00000000,0x00000000
-        .long  0x000a0000,0x00000058           # external new psw
-        .long  0x000a0000,0x00000060           # svc new psw
-        .long  0x000a0000,0x00000068           # program check new psw
-        .long  0x000a0000,0x00000070           # machine check new psw
-        .long  0x00080000,0x80000000+.Lioint   # io new psw
-
-        .org   0x100
-#
-# subroutine for loading from tape
-# Paramters:	
-#  R1 = device number
-#  R2 = load address
-.Lloader:	
-        st    %r14,.Lldret
-        la    %r3,.Lorbread                    # r3 = address of orb 
-	la    %r5,.Lirb                        # r5 = address of irb
-        st    %r2,.Lccwread+4                  # initialize CCW data addresses
-        lctl  %c6,%c6,.Lcr6               
-        slr   %r2,%r2
-.Lldlp:
-        la    %r6,3                            # 3 retries
-.Lssch:
-        ssch  0(%r3)                           # load chunk of IPL_BS bytes
-        bnz   .Llderr
-.Lw4end:
-        bas   %r14,.Lwait4io
-        tm    8(%r5),0x82                      # do we have a problem ?
-        bnz   .Lrecov
-        slr   %r7,%r7
-        icm   %r7,3,10(%r5)                    # get residual count
-        lcr   %r7,%r7
-        la    %r7,IPL_BS(%r7)                  # IPL_BS-residual=#bytes read
-        ar    %r2,%r7                          # add to total size
-        tm    8(%r5),0x01                      # found a tape mark ?
-        bnz   .Ldone
-        l     %r0,.Lccwread+4                  # update CCW data addresses
-        ar    %r0,%r7
-        st    %r0,.Lccwread+4                
-        b     .Lldlp
-.Ldone:
-        l     %r14,.Lldret
-        br    %r14                             # r2 contains the total size
-.Lrecov:
-        bas   %r14,.Lsense                     # do the sensing
-        bct   %r6,.Lssch                       # dec. retry count & branch
-        b     .Llderr
-#
-# Sense subroutine
-#
-.Lsense:
-        st    %r14,.Lsnsret
-        la    %r7,.Lorbsense              
-        ssch  0(%r7)                           # start sense command
-        bnz   .Llderr
-        bas   %r14,.Lwait4io
-        l     %r14,.Lsnsret
-        tm    8(%r5),0x82                      # do we have a problem ?
-        bnz   .Llderr
-        br    %r14
-#
-# Wait for interrupt subroutine
-#
-.Lwait4io:
-        lpsw  .Lwaitpsw                 
-.Lioint:
-        c     %r1,0xb8                         # compare subchannel number
-        bne   .Lwait4io
-        tsch  0(%r5)
-        slr   %r0,%r0
-        tm    8(%r5),0x82                      # do we have a problem ?
-        bnz   .Lwtexit
-        tm    8(%r5),0x04                      # got device end ?
-        bz    .Lwait4io
-.Lwtexit:
-        br    %r14
-.Llderr:
-        lpsw  .Lcrash              
-
-        .align 8
-.Lorbread:
-	.long  0x00000000,0x0080ff00,.Lccwread
-        .align 8
-.Lorbsense:
-        .long  0x00000000,0x0080ff00,.Lccwsense
-        .align 8
-.Lccwread:
-        .long  0x02200000+IPL_BS,0x00000000
-.Lccwsense:
-        .long  0x04200001,0x00000000
-.Lwaitpsw:
-	.long  0x020a0000,0x80000000+.Lioint
-
-.Lirb:	.long  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
-.Lcr6:  .long  0xff000000
-        .align 8
-.Lcrash:.long  0x000a0000,0x00000000
-.Lldret:.long  0
-.Lsnsret: .long 0
-#endif  /* CONFIG_IPL_TAPE */
-
-#ifdef CONFIG_IPL_VM
-#define IPL_BS 0x730
-        .org   0
-        .long  0x00080000,0x80000000+iplstart  # The first 24 bytes are loaded
-        .long  0x02000018,0x60000050           # by ipl to addresses 0-23.
-        .long  0x02000068,0x60000050           # (a PSW and two CCWs).
-        .fill  80-24,1,0x40                    # bytes 24-79 are discarded !!
-        .long  0x020000f0,0x60000050           # The next 160 byte are loaded
-        .long  0x02000140,0x60000050           # to addresses 0x18-0xb7
-        .long  0x02000190,0x60000050           # They form the continuation
-        .long  0x020001e0,0x60000050           # of the CCW program started
-        .long  0x02000230,0x60000050           # by ipl and load the range
-        .long  0x02000280,0x60000050           # 0x0f0-0x730 from the image
-        .long  0x020002d0,0x60000050           # to the range 0x0f0-0x730
-        .long  0x02000320,0x60000050           # in memory. At the end of
-        .long  0x02000370,0x60000050           # the channel program the PSW
-        .long  0x020003c0,0x60000050           # at location 0 is loaded.
-        .long  0x02000410,0x60000050           # Initial processing starts
-        .long  0x02000460,0x60000050           # at 0xf0 = iplstart.
-        .long  0x020004b0,0x60000050
-        .long  0x02000500,0x60000050
-        .long  0x02000550,0x60000050
-        .long  0x020005a0,0x60000050
-        .long  0x020005f0,0x60000050
-        .long  0x02000640,0x60000050
-        .long  0x02000690,0x60000050
-        .long  0x020006e0,0x20000050
-
-        .org   0xf0
-#
-# subroutine for loading cards from the reader
-#
-.Lloader:	
-	la    %r3,.Lorb                        # r2 = address of orb into r2
-	la    %r5,.Lirb                        # r4 = address of irb
-        la    %r6,.Lccws              
-        la    %r7,20
-.Linit:
-        st    %r2,4(%r6)                       # initialize CCW data addresses
-        la    %r2,0x50(%r2)
-        la    %r6,8(%r6)
-        bct   7,.Linit
-
-        lctl  %c6,%c6,.Lcr6                    # set IO subclass mask
-	slr   %r2,%r2
-.Lldlp:
-        ssch  0(%r3)                           # load chunk of 1600 bytes
-        bnz   .Llderr
-.Lwait4irq:
-        mvc   0x78(8),.Lnewpsw                 # set up IO interrupt psw
-        lpsw  .Lwaitpsw              
-.Lioint:
-        c     %r1,0xb8                         # compare subchannel number
-	bne   .Lwait4irq
-	tsch  0(%r5)
-
-	slr   %r0,%r0
-	ic    %r0,8(%r5)                       # get device status
-	chi   %r0,8                            # channel end ?
-	be    .Lcont
-	chi   %r0,12                           # channel end + device end ?
-	be    .Lcont
-
-        l     %r0,4(%r5)
-        s     %r0,8(%r3)                       # r0/8 = number of ccws executed
-        mhi   %r0,10                           # *10 = number of bytes in ccws
-        lh    %r3,10(%r5)                      # get residual count
-        sr    %r0,%r3                          # #ccws*80-residual=#bytes read
-	ar    %r2,%r0
-	
-        br    %r14                             # r2 contains the total size
-
-.Lcont:
-	ahi   %r2,0x640                        # add 0x640 to total size
-        la    %r6,.Lccws             
-        la    %r7,20
-.Lincr:
-        l     %r0,4(%r6)                       # update CCW data addresses
-        ahi   %r0,0x640
-        st    %r0,4(%r6)
-        ahi   %r6,8
-        bct   7,.Lincr
-
-        b     .Lldlp
-.Llderr:
-        lpsw  .Lcrash              
-
-        .align 8
-.Lorb:	.long  0x00000000,0x0080ff00,.Lccws
-.Lirb:	.long  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
-.Lcr6:  .long  0xff000000
-.Lloadp:.long  0,0
-        .align 8
-.Lcrash:.long  0x000a0000,0x00000000
-.Lnewpsw:
-        .long  0x00080000,0x80000000+.Lioint
-.Lwaitpsw:
-        .long  0x020a0000,0x80000000+.Lioint
-
-        .align 8
-.Lccws: .rept  19
-        .long  0x02600050,0x00000000
-        .endr
-        .long  0x02200050,0x00000000
-#endif  /* CONFIG_IPL_VM */
-
-iplstart:
-        lh    %r1,0xb8                         # test if subchannel number
-        bct   %r1,.Lnoload                     #  is valid
-	l     %r1,0xb8                         # load ipl subchannel number
-        la    %r2,IPL_BS                       # load start address
-        bas   %r14,.Lloader                    # load rest of ipl image
-        larl  %r12,_pstart                     # pointer to parameter area
-        st    %r1,IPL_DEVICE+4-PARMAREA(%r12)  # store ipl device number
-
-#
-# load parameter file from ipl device
 #
-.Lagain1:
- 	l     %r2,INITRD_START+4-PARMAREA(%r12)# use ramdisk location as temp
-        bas   %r14,.Lloader                    # load parameter file
-        ltr   %r2,%r2                          # got anything ?
-        bz    .Lnopf
-	chi   %r2,895
-	bnh   .Lnotrunc
-	la    %r2,895
-.Lnotrunc:
-	l     %r4,INITRD_START+4-PARMAREA(%r12)
- 	clc   0(3,%r4),.L_hdr		       # if it is HDRx
- 	bz    .Lagain1			       # skip dataset header
- 	clc   0(3,%r4),.L_eof		       # if it is EOFx
- 	bz    .Lagain1			       # skip dateset trailer
-        la    %r5,0(%r4,%r2)
-        lr    %r3,%r2
-.Lidebc:
-        tm    0(%r5),0x80                      # high order bit set ?
-        bo    .Ldocv                           #  yes -> convert from EBCDIC
-        ahi   %r5,-1
-        bct   %r3,.Lidebc
-        b     .Lnocv
-.Ldocv:
-        l     %r3,.Lcvtab
-        tr    0(256,%r4),0(%r3)                # convert parameters to ascii
-        tr    256(256,%r4),0(%r3)
-        tr    512(256,%r4),0(%r3)
-        tr    768(122,%r4),0(%r3)
-.Lnocv: la    %r3,COMMAND_LINE-PARMAREA(%r12)  # load adr. of command line
-	mvc   0(256,%r3),0(%r4)
-	mvc   256(256,%r3),256(%r4)
-	mvc   512(256,%r3),512(%r4)
-	mvc   768(122,%r3),768(%r4)
-        slr   %r0,%r0
-        b     .Lcntlp
-.Ldelspc:
-        ic    %r0,0(%r2,%r3)
-        chi   %r0,0x20                         # is it a space ?
-        be    .Lcntlp
-        ahi   %r2,1
-        b     .Leolp
-.Lcntlp:
-        brct  %r2,.Ldelspc
-.Leolp:
-        slr   %r0,%r0
-        stc   %r0,0(%r2,%r3)                   # terminate buffer
-.Lnopf:
-
-#
-# load ramdisk from ipl device
-#
-.Lagain2:
- 	l     %r2,INITRD_START+4-PARMAREA(%r12)# load adr. of ramdisk
-        bas   %r14,.Lloader                    # load ramdisk
- 	st    %r2,INITRD_SIZE+4-PARMAREA(%r12) # store size of ramdisk
-        ltr   %r2,%r2
-        bnz   .Lrdcont
-        st    %r2,INITRD_START+4-PARMAREA(%r12)# no ramdisk found, null it
-.Lrdcont:
-	l     %r2,INITRD_START+4-PARMAREA(%r12)
-	clc   0(3,%r2),.L_hdr		       # skip HDRx and EOFx 
-	bz    .Lagain2
-	clc   0(3,%r2),.L_eof
-	bz    .Lagain2
-
-#ifdef CONFIG_IPL_VM
-#
-# reset files in VM reader
-#
-        stidp __LC_CPUID                       # store cpuid
-	tm    __LC_CPUID,0xff                  # running VM ?
-	bno   .Lnoreset
-        la    %r2,.Lreset              
-        lhi   %r3,26
-	diag  %r2,%r3,8
-	la    %r5,.Lirb
-	stsch 0(%r5)			       # check if irq is pending
-	tm    30(%r5),0x0f		       # by verifying if any of the
-	bnz   .Lwaitforirq		       # activity or status control
-	tm    31(%r5),0xff		       # bits is set in the schib
-	bz    .Lnoreset
-.Lwaitforirq:
-	mvc   0x78(8),.Lrdrnewpsw	       # set up IO interrupt psw
-.Lwaitrdrirq:
-	lpsw  .Lrdrwaitpsw
-.Lrdrint:
-	c     %r1,0xb8			       # compare subchannel number
-	bne   .Lwaitrdrirq
-	la    %r5,.Lirb
-	tsch  0(%r5)
-.Lnoreset:
-	b     .Lnoload
-
-	.align 8
-.Lrdrnewpsw:
-	.long  0x00080000,0x80000000+.Lrdrint
-.Lrdrwaitpsw:
-	.long  0x020a0000,0x80000000+.Lrdrint
-#endif
-
-#
-# everything loaded, go for it
-#
-.Lnoload:
-        l     %r1,.Lstartup
-        br    %r1
-
-.Lstartup: .long startup
-.Lcvtab:.long  _ebcasc                         # ebcdic to ascii table
-.Lreset:.byte  0xc3,0xc8,0xc1,0xd5,0xc7,0xc5,0x40,0xd9,0xc4,0xd9,0x40
-        .byte  0xc1,0xd3,0xd3,0x40,0xd2,0xc5,0xc5,0xd7,0x40,0xd5,0xd6
-        .byte  0xc8,0xd6,0xd3,0xc4             # "change rdr all keep nohold"
-.L_eof: .long  0xc5d6c600       /* C'EOF' */
-.L_hdr: .long  0xc8c4d900       /* C'HDR' */
-#endif  /* CONFIG_IPL */
-
-#
-# SALIPL loader support. Based on a patch by Rob van der Heij.
-# This entry point is called directly from the SALIPL loader and
-# doesn't need a builtin ipl record.
-#
-        .org  0x800
-	.globl start
-start:
-	stm   %r0,%r15,0x07b0		# store registers
-	basr  %r12,%r0
-.base:
-	l     %r11,.parm
-	l     %r8,.cmd			# pointer to command buffer
-
-	ltr   %r9,%r9			# do we have SALIPL parameters?
-	bp    .sk8x8
-
-	mvc   0(64,%r8),0x00b0		# copy saved registers
-	xc    64(240-64,%r8),0(%r8)	# remainder of buffer
-	tr    0(64,%r8),.lowcase	
-	b     .gotr
-.sk8x8:
-	mvc   0(240,%r8),0(%r9)		# copy iplparms into buffer
-.gotr:
-	l     %r10,.tbl			# EBCDIC to ASCII table
-	tr    0(240,%r8),0(%r10)
-	stidp __LC_CPUID		# Are we running on VM maybe
-	cli   __LC_CPUID,0xff
-	bnz   .test
-	.long 0x83300060		# diag 3,0,x'0060' - storage size
-	b     .done
-.test:
-	mvc   0x68(8),.pgmnw		# set up pgm check handler
-	l     %r2,.fourmeg
-	lr    %r3,%r2
-	bctr  %r3,%r0			# 4M-1
-.loop:  iske  %r0,%r3
-	ar    %r3,%r2
-.pgmx:
-	sr    %r3,%r2
-	la    %r3,1(%r3)
-.done:
-	l     %r1,.memsize
-	st    %r3,4(%r1)
-	slr   %r0,%r0
-	st    %r0,INITRD_SIZE+4-PARMAREA(%r11)
-	st    %r0,INITRD_START+4-PARMAREA(%r11)
-	j     startup                   # continue with startup
-.tbl:	.long _ebcasc			# translate table
-.cmd:	.long COMMAND_LINE		# address of command line buffer
-.parm:	.long PARMAREA
-.fourmeg: .long 0x00400000      	# 4M
-.pgmnw:	.long 0x00080000,.pgmx
-.memsize: .long memory_size
-.lowcase:
-	.byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07 
-	.byte 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f
-	.byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17 
-	.byte 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f
-	.byte 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27 
-	.byte 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f
-	.byte 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37 
-	.byte 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f
-	.byte 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47 
-	.byte 0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f
-	.byte 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57 
-	.byte 0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f
-	.byte 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67 
-	.byte 0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f
-	.byte 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77 
-	.byte 0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f
-
-	.byte 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87 
-	.byte 0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f
-	.byte 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97 
-	.byte 0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f
-	.byte 0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7 
-	.byte 0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf
-	.byte 0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7 
-	.byte 0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf
-	.byte 0xc0,0x81,0x82,0x83,0x84,0x85,0x86,0x87	# .abcdefg 
-	.byte 0x88,0x89,0xca,0xcb,0xcc,0xcd,0xce,0xcf	# hi
-	.byte 0xd0,0x91,0x92,0x93,0x94,0x95,0x96,0x97 	# .jklmnop
-	.byte 0x98,0x99,0xda,0xdb,0xdc,0xdd,0xde,0xdf	# qr
-	.byte 0xe0,0xe1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7	# ..stuvwx
-	.byte 0xa8,0xa9,0xea,0xeb,0xec,0xed,0xee,0xef	# yz
-	.byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7 
-	.byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
-
-#
-# startup-code at 0x10000, running in real mode
+# 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
 #
@@ -750,62 +285,7 @@ _pstart:
 	.global _pend
 _pend:	
 
-.Lget_ipl_device:
-	basr  %r12,0
-.LPG2:	l     %r1,0xb8			# get sid
-	sll   %r1,15			# test if subchannel is enabled
-	srl   %r1,31
-	ltr   %r1,%r1
-	bz    0(%r14)			# subchannel disabled
-	l     %r1,0xb8
-	la    %r5,.Lipl_schib-.LPG2(%r12)
-	stsch 0(%r5)		        # get schib of subchannel
-	bnz   0(%r14)			# schib not available
-	tm    5(%r5),0x01		# devno valid?
-	bno   0(%r14)
-	la    %r6,ipl_parameter_flags-.LPG2(%r12)
-	oi    3(%r6),0x01		# set flag
-	la    %r2,ipl_devno-.LPG2(%r12)
-	mvc   0(2,%r2),6(%r5)		# store devno
-	tm    4(%r5),0x80		# qdio capable device?
-	bno   0(%r14)
-	oi    3(%r6),0x02		# set flag
-
-	# copy ipl parameters
-
-	lhi   %r0,4096
-	l     %r2,20(%r0)		# get address of parameter list
-	lhi   %r3,IPL_PARMBLOCK_ORIGIN
-	st    %r3,20(%r0)
-	lhi   %r4,1
-	cr    %r2,%r3			# start parameters < destination ?
-	jl    0f
-	lhi   %r1,1			# copy direction is upwards
-	j     1f
-0:	lhi   %r1,-1			# copy direction is downwards
-	ar    %r2,%r0
-	ar    %r3,%r0
-	ar    %r2,%r1
-	ar    %r3,%r1
-1:	mvc   0(1,%r3),0(%r2)		# finally copy ipl parameters
-	ar    %r3,%r1
-	ar    %r2,%r1
-	sr    %r0,%r4
-	jne   1b
-	b     0(%r14)
-
-	.align 4
-.Lipl_schib:
-	.rept 13
-	.long 0
-	.endr
-
-	.globl ipl_parameter_flags
-ipl_parameter_flags:
-	.long 0
-	.globl ipl_devno
-ipl_devno:
-	.word 0
+	GET_IPL_DEVICE
 
 #ifdef CONFIG_SHARED_KERNEL
 	.org   0x100000