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authorHeiko Carstens <heiko.carstens@de.ibm.com>2006-06-29 08:58:17 -0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-06-29 08:58:17 -0400
commitb1b70306911a35b3851a73c87e6e9bd45a08b893 (patch)
tree561dc36ff4774bc2936f0391cb1d4d71e3dc7288 /arch/s390/kernel/head64.S
parent138c014dcba74211dc4e835658f34a787c40cf17 (diff)
[S390] head.S code moving.
There is almost no room left for any new code between 0x10000 and 0x10480. Move the code from 0x10000 to 0x11000. Signed-off-by: Heiko Carstens <heiko.carstens@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.S79
1 files changed, 39 insertions, 40 deletions
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index ad5d87f3aef3..47744fcca930 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -1,7 +1,7 @@
1/* 1/*
2 * arch/s390/kernel/head64.S 2 * arch/s390/kernel/head64.S
3 * 3 *
4 * (C) Copyright IBM Corp. 1999,2005 4 * Copyright (C) IBM Corp. 1999,2006
5 * 5 *
6 * Author(s): Hartmut Penner <hp@de.ibm.com> 6 * Author(s): Hartmut Penner <hp@de.ibm.com>
7 * Martin Schwidefsky <schwidefsky@de.ibm.com> 7 * Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -15,18 +15,37 @@
15# this is called either by the ipl loader or directly by PSW restart 15# this is called either by the ipl loader or directly by PSW restart
16# or linload or SALIPL 16# or linload or SALIPL
17# 17#
18 .org 0x10000 18 .org 0x10000
19startup:basr %r13,0 # get base 19startup:basr %r13,0 # get base
20.LPG0: l %r13,0f-.LPG0(%r13)
21 b 0(%r13)
220: .long startup_continue
23
24#
25# params at 10400 (setup.h)
26#
27 .org PARMAREA
28 .quad 0 # IPL_DEVICE
29 .quad RAMDISK_ORIGIN # INITRD_START
30 .quad RAMDISK_SIZE # INITRD_SIZE
31
32 .org COMMAND_LINE
33 .byte "root=/dev/ram0 ro"
34 .byte 0
35
36 .org 0x11000
37
38startup_continue:
39 basr %r13,0 # get base
20.LPG1: sll %r13,1 # remove high order bit 40.LPG1: sll %r13,1 # remove high order bit
21 srl %r13,1 41 srl %r13,1
22 l %r1,.Lget_ipl_device_addr-.LPG1(%r13) 42 GET_IPL_DEVICE
23 basr %r14,%r1
24 lhi %r1,1 # mode 1 = esame 43 lhi %r1,1 # mode 1 = esame
25 slr %r0,%r0 # set cpuid to zero 44 slr %r0,%r0 # set cpuid to zero
26 sigp %r1,%r0,0x12 # switch to esame mode 45 sigp %r1,%r0,0x12 # switch to esame mode
27 sam64 # switch to 64 bit mode 46 sam64 # switch to 64 bit mode
28 lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers 47 lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
29 larl %r12,_pstart # pointer to parameter area 48 lg %r12,.Lparmaddr-.LPG1(%r13)# pointer to parameter area
30 # move IPL device to lowcore 49 # move IPL device to lowcore
31 mvc __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12) 50 mvc __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12)
32 51
@@ -55,8 +74,8 @@ startup:basr %r13,0 # get base
55 larl %r1,.Lsclph 74 larl %r1,.Lsclph
56 stg %r1,__LC_EXT_NEW_PSW+8 # set handler 75 stg %r1,__LC_EXT_NEW_PSW+8 # set handler
57 76
58 larl %r4,_pstart # %r4 is our index for sccb stuff 77 larl %r4,.Lsccb # %r4 is our index for sccb stuff
59 la %r1,.Lsccb-PARMAREA(%r4) # our sccb 78 lgr %r1,%r4 # our sccb
60 .insn rre,0xb2200000,%r2,%r1 # service call 79 .insn rre,0xb2200000,%r2,%r1 # service call
61 ipm %r1 80 ipm %r1
62 srl %r1,28 # get cc code 81 srl %r1,28 # get cc code
@@ -67,7 +86,7 @@ startup:basr %r13,0 # get base
67 be .Lservicecall-.LPG1(%r13) 86 be .Lservicecall-.LPG1(%r13)
68 lpswe .Lwaitsclp-.LPG1(%r13) 87 lpswe .Lwaitsclp-.LPG1(%r13)
69.Lsclph: 88.Lsclph:
70 lh %r1,.Lsccbr-PARMAREA(%r4) 89 lh %r1,.Lsccbr-.Lsccb(%r4)
71 chi %r1,0x10 # 0x0010 is the sucess code 90 chi %r1,0x10 # 0x0010 is the sucess code
72 je .Lprocsccb # let's process the sccb 91 je .Lprocsccb # let's process the sccb
73 chi %r1,0x1f0 92 chi %r1,0x1f0
@@ -78,15 +97,15 @@ startup:basr %r13,0 # get base
78 b .Lservicecall-.LPG1(%r13) 97 b .Lservicecall-.LPG1(%r13)
79.Lprocsccb: 98.Lprocsccb:
80 lghi %r1,0 99 lghi %r1,0
81 icm %r1,3,.Lscpincr1-PARMAREA(%r4) # use this one if != 0 100 icm %r1,3,.Lscpincr1-.Lsccb(%r4) # use this one if != 0
82 jnz .Lscnd 101 jnz .Lscnd
83 lg %r1,.Lscpincr2-PARMAREA(%r4) # otherwise use this one 102 lg %r1,.Lscpincr2-.Lsccb(%r4) # otherwise use this one
84.Lscnd: 103.Lscnd:
85 xr %r3,%r3 # same logic 104 xr %r3,%r3 # same logic
86 ic %r3,.Lscpa1-PARMAREA(%r4) 105 ic %r3,.Lscpa1-.Lsccb(%r4)
87 chi %r3,0x00 106 chi %r3,0x00
88 jne .Lcompmem 107 jne .Lcompmem
89 l %r3,.Lscpa2-PARMAREA(%r4) 108 l %r3,.Lscpa2-.Lsccb(%r4)
90.Lcompmem: 109.Lcompmem:
91 mlgr %r2,%r1 # mem in MB on 128-bit 110 mlgr %r2,%r1 # mem in MB on 128-bit
92 l %r1,.Lonemb-.LPG1(%r13) 111 l %r1,.Lonemb-.LPG1(%r13)
@@ -94,8 +113,6 @@ startup:basr %r13,0 # get base
94 b .Lfchunk-.LPG1(%r13) 113 b .Lfchunk-.LPG1(%r13)
95 114
96 .align 4 115 .align 4
97.Lget_ipl_device_addr:
98 .long .Lget_ipl_device
99.Lpmask: 116.Lpmask:
100 .byte 0 117 .byte 0
101 .align 8 118 .align 8
@@ -242,29 +259,16 @@ startup:basr %r13,0 # get base
242 .quad 0 # cr13: home space segment table 259 .quad 0 # cr13: home space segment table
243 .quad 0xc0000000 # cr14: machine check handling off 260 .quad 0xc0000000 # cr14: machine check handling off
244 .quad 0 # cr15: linkage stack operations 261 .quad 0 # cr15: linkage stack operations
262.Lduct: .long 0,0,0,0,0,0,0,0
263 .long 0,0,0,0,0,0,0,0
245.Lpcmsk:.quad 0x0000000180000000 264.Lpcmsk:.quad 0x0000000180000000
246.L4malign:.quad 0xffffffffffc00000 265.L4malign:.quad 0xffffffffffc00000
247.Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8 266.Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8
248.Lnop: .long 0x07000700 267.Lnop: .long 0x07000700
268.Lparmaddr:
269 .quad PARMAREA
249 270
250 .org PARMAREA-64 271 .align 4096
251.Lduct: .long 0,0,0,0,0,0,0,0
252 .long 0,0,0,0,0,0,0,0
253
254#
255# params at 10400 (setup.h)
256#
257 .org PARMAREA
258 .global _pstart
259_pstart:
260 .quad 0 # IPL_DEVICE
261 .quad RAMDISK_ORIGIN # INITRD_START
262 .quad RAMDISK_SIZE # INITRD_SIZE
263
264 .org COMMAND_LINE
265 .byte "root=/dev/ram0 ro"
266 .byte 0
267 .org 0x11000
268.Lsccb: 272.Lsccb:
269 .hword 0x1000 # length, one page 273 .hword 0x1000 # length, one page
270 .byte 0x00,0x00,0x00 274 .byte 0x00,0x00,0x00
@@ -281,18 +285,14 @@ _pstart:
281.Lscpincr2: 285.Lscpincr2:
282 .quad 0x00 286 .quad 0x00
283 .fill 3984,1,0 287 .fill 3984,1,0
284 .org 0x12000 288 .align 4096
285 .global _pend
286_pend:
287
288 GET_IPL_DEVICE
289 289
290#ifdef CONFIG_SHARED_KERNEL 290#ifdef CONFIG_SHARED_KERNEL
291 .org 0x100000 291 .org 0x100000
292#endif 292#endif
293 293
294# 294#
295# startup-code, running in virtual mode 295# startup-code, running in absolute addressing mode
296# 296#
297 .globl _stext 297 .globl _stext
298_stext: basr %r13,0 # get base 298_stext: basr %r13,0 # get base
@@ -326,4 +326,3 @@ _stext: basr %r13,0 # get base
326 .align 8 326 .align 8
327.Ldw: .quad 0x0002000180000000,0x0000000000000000 327.Ldw: .quad 0x0002000180000000,0x0000000000000000
328.Laregs: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 328.Laregs: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
329