]> bbs.cooldavid.org Git - net-next-2.6.git/blame - arch/s390/kernel/head.S
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[S390] add read_persistent_clock
[net-next-2.6.git] / arch / s390 / kernel / head.S
CommitLineData
1da177e4
LT		 1/*
2 * arch/s390/kernel/head.S
3 *
b1b70306 4 * Copyright (C) IBM Corp. 1999,2006
0ad775db
HC		 5 *
6 * Author(s): Hartmut Penner <hp@de.ibm.com>
7 * Martin Schwidefsky <schwidefsky@de.ibm.com>
8 * Rob van der Heij <rvdhei@iae.nl>
9 * Heiko Carstens <heiko.carstens@de.ibm.com>
1da177e4
LT		 10 *
11 * There are 5 different IPL methods
12 * 1) load the image directly into ram at address 0 and do an PSW restart
13 * 2) linload will load the image from address 0x10000 to memory 0x10000
14 * and start the code thru LPSW 0x0008000080010000 (VM only, deprecated)
15 * 3) generate the tape ipl header, store the generated image on a tape
16 * and ipl from it
17 * In case of SL tape you need to IPL 5 times to get past VOL1 etc
18 * 4) generate the vm reader ipl header, move the generated image to the
19 * VM reader (use option NOH!) and do a ipl from reader (VM only)
20 * 5) direct call of start by the SALIPL loader
21 * We use the cpuid to distinguish between VM and native ipl
22 * params for kernel are pushed to 0x10400 (see setup.h)
0ad775db 23 *
1da177e4
LT		 24 */
25
1da177e4
LT		 26#include <asm/setup.h>
27#include <asm/lowcore.h>
0013a854 28#include <asm/asm-offsets.h>
1da177e4
LT		 29#include <asm/thread_info.h>
30#include <asm/page.h>
31
347a8dc3 32#ifdef CONFIG_64BIT
0ad775db
HC		 33#define ARCH_OFFSET 4
34#else
35#define ARCH_OFFSET 0
36#endif
37
e62133b4 38.section ".text.head","ax"
1da177e4 39#ifndef CONFIG_IPL
25d83cbf
HC		 40 .org 0
41 .long 0x00080000,0x80000000+startup # Just a restart PSW
1da177e4
LT		 42#else
43#ifdef CONFIG_IPL_TAPE
44#define IPL_BS 1024
25d83cbf
HC		 45 .org 0
46 .long 0x00080000,0x80000000+iplstart # The first 24 bytes are loaded
47 .long 0x27000000,0x60000001 # by ipl to addresses 0-23.
48 .long 0x02000000,0x20000000+IPL_BS # (a PSW and two CCWs).
49 .long 0x00000000,0x00000000 # external old psw
50 .long 0x00000000,0x00000000 # svc old psw
51 .long 0x00000000,0x00000000 # program check old psw
52 .long 0x00000000,0x00000000 # machine check old psw
53 .long 0x00000000,0x00000000 # io old psw
54 .long 0x00000000,0x00000000
55 .long 0x00000000,0x00000000
56 .long 0x00000000,0x00000000
57 .long 0x000a0000,0x00000058 # external new psw
58 .long 0x000a0000,0x00000060 # svc new psw
59 .long 0x000a0000,0x00000068 # program check new psw
60 .long 0x000a0000,0x00000070 # machine check new psw
61 .long 0x00080000,0x80000000+.Lioint # io new psw
1da177e4 62
25d83cbf 63 .org 0x100
1da177e4
LT		 64#
65# subroutine for loading from tape
25d83cbf 66# Paramters:
1da177e4
LT		 67# R1 = device number
68# R2 = load address
25d83cbf
HC		 69.Lloader:
70 st %r14,.Lldret
71 la %r3,.Lorbread # r3 = address of orb
72 la %r5,.Lirb # r5 = address of irb
73 st %r2,.Lccwread+4 # initialize CCW data addresses
74 lctl %c6,%c6,.Lcr6
75 slr %r2,%r2
1da177e4 76.Lldlp:
25d83cbf 77 la %r6,3 # 3 retries
1da177e4 78.Lssch:
25d83cbf
HC		 79 ssch 0(%r3) # load chunk of IPL_BS bytes
80 bnz .Llderr
1da177e4 81.Lw4end:
25d83cbf
HC		 82 bas %r14,.Lwait4io
83 tm 8(%r5),0x82 # do we have a problem ?
84 bnz .Lrecov
85 slr %r7,%r7
86 icm %r7,3,10(%r5) # get residual count
87 lcr %r7,%r7
88 la %r7,IPL_BS(%r7) # IPL_BS-residual=#bytes read
89 ar %r2,%r7 # add to total size
90 tm 8(%r5),0x01 # found a tape mark ?
91 bnz .Ldone
92 l %r0,.Lccwread+4 # update CCW data addresses
93 ar %r0,%r7
94 st %r0,.Lccwread+4
95 b .Lldlp
1da177e4 96.Ldone:
25d83cbf
HC		 97 l %r14,.Lldret
98 br %r14 # r2 contains the total size
1da177e4 99.Lrecov:
25d83cbf
HC		 100 bas %r14,.Lsense # do the sensing
101 bct %r6,.Lssch # dec. retry count & branch
102 b .Llderr
1da177e4
LT		 103#
104# Sense subroutine
105#
106.Lsense:
25d83cbf
HC		 107 st %r14,.Lsnsret
108 la %r7,.Lorbsense
109 ssch 0(%r7) # start sense command
110 bnz .Llderr
111 bas %r14,.Lwait4io
112 l %r14,.Lsnsret
113 tm 8(%r5),0x82 # do we have a problem ?
114 bnz .Llderr
115 br %r14
1da177e4
LT		 116#
117# Wait for interrupt subroutine
118#
119.Lwait4io:
25d83cbf 120 lpsw .Lwaitpsw
1da177e4 121.Lioint:
25d83cbf
HC		 122 c %r1,0xb8 # compare subchannel number
123 bne .Lwait4io
124 tsch 0(%r5)
125 slr %r0,%r0
126 tm 8(%r5),0x82 # do we have a problem ?
127 bnz .Lwtexit
128 tm 8(%r5),0x04 # got device end ?
129 bz .Lwait4io
1da177e4 130.Lwtexit:
25d83cbf 131 br %r14
1da177e4 132.Llderr:
25d83cbf 133 lpsw .Lcrash
1da177e4 134
25d83cbf 135 .align 8
1da177e4 136.Lorbread:
25d83cbf
HC		 137 .long 0x00000000,0x0080ff00,.Lccwread
138 .align 8
1da177e4 139.Lorbsense:
25d83cbf
HC		 140 .long 0x00000000,0x0080ff00,.Lccwsense
141 .align 8
1da177e4 142.Lccwread:
25d83cbf 143 .long 0x02200000+IPL_BS,0x00000000
1da177e4 144.Lccwsense:
25d83cbf 145 .long 0x04200001,0x00000000
1da177e4 146.Lwaitpsw:
25d83cbf 147 .long 0x020a0000,0x80000000+.Lioint
1da177e4 148
25d83cbf
HC		 149.Lirb: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
150.Lcr6: .long 0xff000000
151 .align 8
152.Lcrash:.long 0x000a0000,0x00000000
153.Lldret:.long 0
1da177e4 154.Lsnsret: .long 0
25d83cbf 155#endif /* CONFIG_IPL_TAPE */
1da177e4
LT		 156
157#ifdef CONFIG_IPL_VM
25d83cbf
HC		 158#define IPL_BS 0x730
159 .org 0
160 .long 0x00080000,0x80000000+iplstart # The first 24 bytes are loaded
161 .long 0x02000018,0x60000050 # by ipl to addresses 0-23.
162 .long 0x02000068,0x60000050 # (a PSW and two CCWs).
163 .fill 80-24,1,0x40 # bytes 24-79 are discarded !!
164 .long 0x020000f0,0x60000050 # The next 160 byte are loaded
165 .long 0x02000140,0x60000050 # to addresses 0x18-0xb7
166 .long 0x02000190,0x60000050 # They form the continuation
167 .long 0x020001e0,0x60000050 # of the CCW program started
168 .long 0x02000230,0x60000050 # by ipl and load the range
169 .long 0x02000280,0x60000050 # 0x0f0-0x730 from the image
170 .long 0x020002d0,0x60000050 # to the range 0x0f0-0x730
171 .long 0x02000320,0x60000050 # in memory. At the end of
172 .long 0x02000370,0x60000050 # the channel program the PSW
173 .long 0x020003c0,0x60000050 # at location 0 is loaded.
174 .long 0x02000410,0x60000050 # Initial processing starts
175 .long 0x02000460,0x60000050 # at 0xf0 = iplstart.
176 .long 0x020004b0,0x60000050
177 .long 0x02000500,0x60000050
178 .long 0x02000550,0x60000050
179 .long 0x020005a0,0x60000050
180 .long 0x020005f0,0x60000050
181 .long 0x02000640,0x60000050
182 .long 0x02000690,0x60000050
183 .long 0x020006e0,0x20000050
1da177e4 184
25d83cbf 185 .org 0xf0
1da177e4
LT		 186#
187# subroutine for loading cards from the reader
188#
25d83cbf
HC		 189.Lloader:
190 la %r3,.Lorb # r2 = address of orb into r2
191 la %r5,.Lirb # r4 = address of irb
192 la %r6,.Lccws
193 la %r7,20
1da177e4 194.Linit:
25d83cbf
HC		 195 st %r2,4(%r6) # initialize CCW data addresses
196 la %r2,0x50(%r2)
197 la %r6,8(%r6)
198 bct 7,.Linit
1da177e4 199
25d83cbf
HC		 200 lctl %c6,%c6,.Lcr6 # set IO subclass mask
201 slr %r2,%r2
1da177e4 202.Lldlp:
25d83cbf
HC		 203 ssch 0(%r3) # load chunk of 1600 bytes
204 bnz .Llderr
1da177e4 205.Lwait4irq:
25d83cbf
HC		 206 mvc 0x78(8),.Lnewpsw # set up IO interrupt psw
207 lpsw .Lwaitpsw
1da177e4 208.Lioint:
25d83cbf
HC		 209 c %r1,0xb8 # compare subchannel number
210 bne .Lwait4irq
211 tsch 0(%r5)
1da177e4 212
25d83cbf
HC		 213 slr %r0,%r0
214 ic %r0,8(%r5) # get device status
215 chi %r0,8 # channel end ?
216 be .Lcont
217 chi %r0,12 # channel end + device end ?
218 be .Lcont
1da177e4 219
25d83cbf
HC		 220 l %r0,4(%r5)
221 s %r0,8(%r3) # r0/8 = number of ccws executed
222 mhi %r0,10 # *10 = number of bytes in ccws
223 lh %r3,10(%r5) # get residual count
224 sr %r0,%r3 # #ccws*80-residual=#bytes read
225 ar %r2,%r0
226
227 br %r14 # r2 contains the total size
1da177e4
LT		 228
229.Lcont:
25d83cbf
HC		 230 ahi %r2,0x640 # add 0x640 to total size
231 la %r6,.Lccws
232 la %r7,20
1da177e4 233.Lincr:
25d83cbf
HC		 234 l %r0,4(%r6) # update CCW data addresses
235 ahi %r0,0x640
236 st %r0,4(%r6)
237 ahi %r6,8
238 bct 7,.Lincr
1da177e4 239
25d83cbf 240 b .Lldlp
1da177e4 241.Llderr:
25d83cbf 242 lpsw .Lcrash
1da177e4 243
25d83cbf
HC		 244 .align 8
245.Lorb: .long 0x00000000,0x0080ff00,.Lccws
246.Lirb: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
247.Lcr6: .long 0xff000000
248.Lloadp:.long 0,0
249 .align 8
250.Lcrash:.long 0x000a0000,0x00000000
1da177e4 251.Lnewpsw:
25d83cbf 252 .long 0x00080000,0x80000000+.Lioint
1da177e4 253.Lwaitpsw:
25d83cbf 254 .long 0x020a0000,0x80000000+.Lioint
1da177e4 255
25d83cbf
HC		 256 .align 8
257.Lccws: .rept 19
258 .long 0x02600050,0x00000000
259 .endr
260 .long 0x02200050,0x00000000
261#endif /* CONFIG_IPL_VM */
1da177e4
LT		 262
263iplstart:
25d83cbf
HC		 264 lh %r1,0xb8 # test if subchannel number
265 bct %r1,.Lnoload # is valid
266 l %r1,0xb8 # load ipl subchannel number
267 la %r2,IPL_BS # load start address
268 bas %r14,.Lloader # load rest of ipl image
269 l %r12,.Lparm # pointer to parameter area
270 st %r1,IPL_DEVICE+ARCH_OFFSET-PARMAREA(%r12) # save ipl device number
1da177e4
LT		 271
272#
273# load parameter file from ipl device
274#
275.Lagain1:
25d83cbf
HC		 276 l %r2,.Linitrd # ramdisk loc. is temp
277 bas %r14,.Lloader # load parameter file
278 ltr %r2,%r2 # got anything ?
279 bz .Lnopf
280 chi %r2,895
281 bnh .Lnotrunc
282 la %r2,895
1da177e4 283.Lnotrunc:
25d83cbf
HC		 284 l %r4,.Linitrd
285 clc 0(3,%r4),.L_hdr # if it is HDRx
286 bz .Lagain1 # skip dataset header
287 clc 0(3,%r4),.L_eof # if it is EOFx
288 bz .Lagain1 # skip dateset trailer
289 la %r5,0(%r4,%r2)
290 lr %r3,%r2
1da177e4 291.Lidebc:
25d83cbf
HC		 292 tm 0(%r5),0x80 # high order bit set ?
293 bo .Ldocv # yes -> convert from EBCDIC
294 ahi %r5,-1
295 bct %r3,.Lidebc
296 b .Lnocv
1da177e4 297.Ldocv:
25d83cbf
HC		 298 l %r3,.Lcvtab
299 tr 0(256,%r4),0(%r3) # convert parameters to ascii
300 tr 256(256,%r4),0(%r3)
301 tr 512(256,%r4),0(%r3)
302 tr 768(122,%r4),0(%r3)
303.Lnocv: la %r3,COMMAND_LINE-PARMAREA(%r12) # load adr. of command line
304 mvc 0(256,%r3),0(%r4)
305 mvc 256(256,%r3),256(%r4)
306 mvc 512(256,%r3),512(%r4)
307 mvc 768(122,%r3),768(%r4)
308 slr %r0,%r0
309 b .Lcntlp
1da177e4 310.Ldelspc:
25d83cbf
HC		 311 ic %r0,0(%r2,%r3)
312 chi %r0,0x20 # is it a space ?
313 be .Lcntlp
314 ahi %r2,1
315 b .Leolp
1da177e4 316.Lcntlp:
25d83cbf 317 brct %r2,.Ldelspc
1da177e4 318.Leolp:
25d83cbf
HC		 319 slr %r0,%r0
320 stc %r0,0(%r2,%r3) # terminate buffer
1da177e4
LT		 321.Lnopf:
322
323#
324# load ramdisk from ipl device
25d83cbf 325#
1da177e4 326.Lagain2:
25d83cbf
HC		 327 l %r2,.Linitrd # addr of ramdisk
328 st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
329 bas %r14,.Lloader # load ramdisk
330 st %r2,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r12) # store size of rd
331 ltr %r2,%r2
332 bnz .Lrdcont
333 st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # no ramdisk found
1da177e4 334.Lrdcont:
25d83cbf 335 l %r2,.Linitrd
1da177e4 336
25d83cbf
HC		 337 clc 0(3,%r2),.L_hdr # skip HDRx and EOFx
338 bz .Lagain2
339 clc 0(3,%r2),.L_eof
340 bz .Lagain2
1da177e4
LT		 341
342#ifdef CONFIG_IPL_VM
343#
344# reset files in VM reader
345#
25d83cbf
HC		 346 stidp __LC_CPUID # store cpuid
347 tm __LC_CPUID,0xff # running VM ?
348 bno .Lnoreset
349 la %r2,.Lreset
350 lhi %r3,26
351 diag %r2,%r3,8
352 la %r5,.Lirb
353 stsch 0(%r5) # check if irq is pending
354 tm 30(%r5),0x0f # by verifying if any of the
355 bnz .Lwaitforirq # activity or status control
356 tm 31(%r5),0xff # bits is set in the schib
357 bz .Lnoreset
350e3ade 358.Lwaitforirq:
25d83cbf 359 mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw
2b071886 360.Lwaitrdrirq:
25d83cbf 361 lpsw .Lrdrwaitpsw
2b071886 362.Lrdrint:
25d83cbf
HC		 363 c %r1,0xb8 # compare subchannel number
364 bne .Lwaitrdrirq
365 la %r5,.Lirb
366 tsch 0(%r5)
1da177e4 367.Lnoreset:
25d83cbf 368 b .Lnoload
2b071886 369
25d83cbf 370 .align 8
2b071886 371.Lrdrnewpsw:
25d83cbf 372 .long 0x00080000,0x80000000+.Lrdrint
2b071886 373.Lrdrwaitpsw:
25d83cbf 374 .long 0x020a0000,0x80000000+.Lrdrint
1da177e4 375#endif
2b071886 376
1da177e4
LT		 377#
378# everything loaded, go for it
379#
380.Lnoload:
25d83cbf
HC		 381 l %r1,.Lstartup
382 br %r1
1da177e4 383
25d83cbf 384.Linitrd:.long _end + 0x400000 # default address of initrd
1da177e4
LT		 385.Lparm: .long PARMAREA
386.Lstartup: .long startup
25d83cbf
HC		 387.Lcvtab:.long _ebcasc # ebcdic to ascii table
388.Lreset:.byte 0xc3,0xc8,0xc1,0xd5,0xc7,0xc5,0x40,0xd9,0xc4,0xd9,0x40
389 .byte 0xc1,0xd3,0xd3,0x40,0xd2,0xc5,0xc5,0xd7,0x40,0xd5,0xd6
390 .byte 0xc8,0xd6,0xd3,0xc4 # "change rdr all keep nohold"
391.L_eof: .long 0xc5d6c600 /* C'EOF' */
392.L_hdr: .long 0xc8c4d900 /* C'HDR' */
1da177e4 393
25d83cbf 394#endif /* CONFIG_IPL */
1da177e4
LT		 395
396#
397# SALIPL loader support. Based on a patch by Rob van der Heij.
398# This entry point is called directly from the SALIPL loader and
399# doesn't need a builtin ipl record.
400#
25d83cbf
HC		 401 .org 0x800
402 .globl start
1da177e4 403start:
25d83cbf
HC		 404 stm %r0,%r15,0x07b0 # store registers
405 basr %r12,%r0
1da177e4 406.base:
25d83cbf
HC		 407 l %r11,.parm
408 l %r8,.cmd # pointer to command buffer
1da177e4 409
25d83cbf
HC		 410 ltr %r9,%r9 # do we have SALIPL parameters?
411 bp .sk8x8
1da177e4 412
25d83cbf
HC		 413 mvc 0(64,%r8),0x00b0 # copy saved registers
414 xc 64(240-64,%r8),0(%r8) # remainder of buffer
415 tr 0(64,%r8),.lowcase
416 b .gotr
1da177e4 417.sk8x8:
25d83cbf 418 mvc 0(240,%r8),0(%r9) # copy iplparms into buffer
1da177e4 419.gotr:
25d83cbf
HC		 420 l %r10,.tbl # EBCDIC to ASCII table
421 tr 0(240,%r8),0(%r10)
25d83cbf
HC		 422 slr %r0,%r0
423 st %r0,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r11)
424 st %r0,INITRD_START+ARCH_OFFSET-PARMAREA(%r11)
425 j startup # continue with startup
426.tbl: .long _ebcasc # translate table
427.cmd: .long COMMAND_LINE # address of command line buffer
428.parm: .long PARMAREA
1da177e4 429.lowcase:
25d83cbf 430 .byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07
1da177e4 431 .byte 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f
25d83cbf 432 .byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17
1da177e4 433 .byte 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f
25d83cbf 434 .byte 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27
1da177e4 435 .byte 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f
25d83cbf 436 .byte 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37
1da177e4 437 .byte 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f
25d83cbf 438 .byte 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47
1da177e4 439 .byte 0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f
25d83cbf 440 .byte 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57
1da177e4 441 .byte 0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f
25d83cbf 442 .byte 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67
1da177e4 443 .byte 0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f
25d83cbf 444 .byte 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77
1da177e4
LT		 445 .byte 0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f
446
25d83cbf 447 .byte 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87
1da177e4 448 .byte 0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f
25d83cbf 449 .byte 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97
1da177e4 450 .byte 0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f
25d83cbf 451 .byte 0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7
1da177e4 452 .byte 0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf
25d83cbf 453 .byte 0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7
1da177e4 454 .byte 0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf
25d83cbf 455 .byte 0xc0,0x81,0x82,0x83,0x84,0x85,0x86,0x87 # .abcdefg
1da177e4 456 .byte 0x88,0x89,0xca,0xcb,0xcc,0xcd,0xce,0xcf # hi
25d83cbf 457 .byte 0xd0,0x91,0x92,0x93,0x94,0x95,0x96,0x97 # .jklmnop
1da177e4
LT		 458 .byte 0x98,0x99,0xda,0xdb,0xdc,0xdd,0xde,0xdf # qr
459 .byte 0xe0,0xe1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7 # ..stuvwx
460 .byte 0xa8,0xa9,0xea,0xeb,0xec,0xed,0xee,0xef # yz
25d83cbf 461 .byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7
1da177e4
LT		 462 .byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
463
e37f50e1
MS		 464#
465# startup-code at 0x10000, running in absolute addressing mode
466# this is called either by the ipl loader or directly by PSW restart
467# or linload or SALIPL
468#
469 .org 0x10000
470startup:basr %r13,0 # get base
471.LPG0:
866ba284
MS		 472 xc 0x200(256),0x200 # partially clear lowcore
473 xc 0x300(256),0x300
b6112ccb
MS		 474 l %r1,5f-.LPG0(%r13)
475 stck 0(%r1)
e37f50e1
MS		 476
477#ifndef CONFIG_MARCH_G5
478 # check processor version against MARCH_{G5,Z900,Z990,Z9_109,Z10}
479 stidp __LC_CPUID # store cpuid
480 lhi %r0,(3f-2f) / 2
481 la %r1,2f-.LPG0(%r13)
4820: clc __LC_CPUID+4(2),0(%r1)
483 jne 3f
484 lpsw 1f-.LPG0(13) # machine type not good enough, crash
485 .align 16
4861: .long 0x000a0000,0x00000000
4872:
488#if defined(CONFIG_MARCH_Z10)
489 .short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086, 0x2094, 0x2096
490#elif defined(CONFIG_MARCH_Z9_109)
491 .short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086
492#elif defined(CONFIG_MARCH_Z990)
493 .short 0x9672, 0x2064, 0x2066
494#elif defined(CONFIG_MARCH_Z900)
495 .short 0x9672
496#endif
4973: la %r1,2(%r1)
498 brct %r0,0b
499#endif
500
b6112ccb 501 l %r13,4f-.LPG0(%r13)
e37f50e1 502 b 0(%r13)
b6112ccb
MS		 5034: .long startup_continue
5045: .long sched_clock_base_cc
e37f50e1
MS		 505
506#
507# params at 10400 (setup.h)
508#
509 .org PARMAREA
510 .long 0,0 # IPL_DEVICE
511 .long 0,0 # INITRD_START
512 .long 0,0 # INITRD_SIZE
513
514 .org COMMAND_LINE
515 .byte "root=/dev/ram0 ro"
516 .byte 0
517
347a8dc3 518#ifdef CONFIG_64BIT
0ad775db
HC		 519#include "head64.S"
520#else
521#include "head31.S"
1da177e4 522#endif
Clone of davem's net-next-2.6 tree