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15#include <asm/asm-offsets.h>
16#include <asm/psw.h>
17#include <asm/pdc.h>
18
19#include <asm/assembly.h>
20#include <asm/pgtable.h>
21
22#include <linux/linkage.h>
23#include <linux/init.h>
24
25 .level LEVEL
26
27 __INITDATA
28ENTRY(boot_args)
29 .word 0
30 .word 0
31 .word 0
32 .word 0
33END(boot_args)
34
35 __HEAD
36
37 .align 4
38 .import init_thread_union,data
39 .import fault_vector_20,code
40#ifndef CONFIG_64BIT
41 .import fault_vector_11,code
42 .import $global$
43#endif
44 .export _stext,data
45_stext:
46ENTRY(stext)
47 .proc
48 .callinfo
49
50
51 mtsp %r0,%sr4
52 mtsp %r0,%sr5
53 mtsp %r0,%sr6
54 mtsp %r0,%sr7
55
56
57
58 .import __bss_start,data
59 .import __bss_stop,data
60
61 load32 PA(__bss_start),%r3
62 load32 PA(__bss_stop),%r4
63$bss_loop:
64 cmpb,<<,n %r3,%r4,$bss_loop
65 stw,ma %r0,4(%r3)
66
67
68 load32 PA(boot_args),%r1
69 stw,ma %arg0,4(%r1)
70 stw,ma %arg1,4(%r1)
71 stw,ma %arg2,4(%r1)
72 stw,ma %arg3,4(%r1)
73
74
75 load32 PA(swapper_pg_dir),%r4
76 mtctl %r4,%cr24
77 mtctl %r4,%cr25
78
79
80
81 load32 PA(pmd0),%r5
82 shrd %r5,PxD_VALUE_SHIFT,%r3
83 ldo (PxD_FLAG_PRESENT+PxD_FLAG_VALID)(%r3),%r3
84 stw %r3,ASM_PGD_ENTRY*ASM_PGD_ENTRY_SIZE(%r4)
85 ldo ASM_PMD_ENTRY*ASM_PMD_ENTRY_SIZE(%r5),%r4
86#else
87
88 ldo ASM_PGD_ENTRY*ASM_PGD_ENTRY_SIZE(%r4),%r4
89#endif
90
91
92 load32 PA(pg0),%r1
93 SHRREG %r1,PxD_VALUE_SHIFT,%r3
94 ldo (PxD_FLAG_PRESENT+PxD_FLAG_VALID)(%r3),%r3
95
96 ldi ASM_PT_INITIAL,%r1
97
981:
99 stw %r3,0(%r4)
100 ldo (PAGE_SIZE >> PxD_VALUE_SHIFT)(%r3),%r3
101 addib,> -1,%r1,1b
102
103 ldo ASM_PMD_ENTRY_SIZE(%r4),%r4
104#else
105 ldo ASM_PGD_ENTRY_SIZE(%r4),%r4
106#endif
107
108
109
110 ldo 0+_PAGE_KERNEL(%r0),%r3
111 ldi (1<<(KERNEL_INITIAL_ORDER-PAGE_SHIFT)),%r11
112 load32 PA(pg0),%r1
113
114$pgt_fill_loop:
115 STREGM %r3,ASM_PTE_ENTRY_SIZE(%r1)
116 ldo (1<<PFN_PTE_SHIFT)(%r3),%r3
117 addib,> -1,%r11,$pgt_fill_loop
118 nop
119
120
121 copy %r0,%r2
122
123
124 load32 start_parisc,%r11
125
126
127 load32 init_thread_union,%r6
128 mtctl %r6,%cr30
129
130
131 ldo THREAD_SZ_ALGN(%r6),%sp
132
133#ifdef CONFIG_SMP
134
135
136
137
138
139 load32 PA(smp_slave_stext),%r10
140 stw %r10,0x10(%r0)
141 stw %r0,0x28(%r0)
142
143
144 .procend
145
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158
159
160
161common_stext:
162 .proc
163 .callinfo
164#else
165
166 stw %r0,0x10(%r0)
167 stw %r0,0x28(%r0)
168#endif
169
170#ifdef CONFIG_64BIT
171 tophys_r1 %sp
172
173
174 ldd TI_TASK-THREAD_SZ_ALGN(%sp), %r10
175 tophys_r1 %r10
176 std %r11, TASK_PT_GR11(%r10)
177
178
179
1801: mfia %rp
181 ldo 2f-1b(%rp),%rp
182 depdi 0,31,32,%rp
183 bv (%rp)
184 ssm PSW_SM_W,%r0
185
186
187
188
189
1902:
191#define MEM_PDC_LO 0x388
192#define MEM_PDC_HI 0x35C
193 ldw MEM_PDC_LO(%r0),%r3
194 ldw MEM_PDC_HI(%r0),%r6
195 depd %r6, 31, 32, %r3
196
197 ldo PDC_PSW(%r0),%arg0
198 ldo PDC_PSW_SET_DEFAULTS(%r0),%arg1
199 ldo PDC_PSW_WIDE_BIT(%r0),%arg2
200 load32 PA(stext_pdc_ret), %rp
201 bv (%r3)
202 copy %r0,%arg3
203
204stext_pdc_ret:
205
206 ldd TI_TASK-THREAD_SZ_ALGN(%sp), %r10
207 tophys_r1 %r10
208 ldd TASK_PT_GR11(%r10), %r11
209 tovirt_r1 %sp
210#endif
211
212
213 mtsp %r0,%sr0
214 mtsp %r0,%sr1
215 mtsp %r0,%sr2
216 mtsp %r0,%sr3
217
218
219 mtctl %r0,%cr8
220 mtctl %r0,%cr9
221 mtctl %r0,%cr12
222 mtctl %r0,%cr13
223
224
225 loadgp
226
227
228
229
230
231
232
233#ifndef CONFIG_64BIT
234 ldi 32,%r10
235 mtctl %r10,%cr11
236 .level 2.0
237 mfctl,w %cr11,%r10
238 .level 1.1
239 comib,<>,n 0,%r10,$is_pa20
240 ldil L%PA(fault_vector_11),%r10
241 b $install_iva
242 ldo R%PA(fault_vector_11)(%r10),%r10
243
244$is_pa20:
245 .level LEVEL
246#endif
247 load32 PA(fault_vector_20),%r10
248
249$install_iva:
250 mtctl %r10,%cr14
251
252 b aligned_rfi
253 nop
254
255 .align 128
256aligned_rfi:
257 pcxt_ssm_bug
258
259 rsm PSW_SM_QUIET,%r0
260
261
262 mtctl %r0,%cr17
263 mtctl %r0,%cr17
264
265
266 mtctl %r11,%cr18
267 ldo 4(%r11),%r11
268 mtctl %r11,%cr18
269
270 load32 KERNEL_PSW,%r10
271 mtctl %r10,%ipsw
272
273
274 rfi
275 nop
276
277 .procend
278
279#ifdef CONFIG_SMP
280
281 .import smp_init_current_idle_task,data
282 .import smp_callin,code
283
284#ifndef CONFIG_64BIT
285smp_callin_rtn:
286 .proc
287 .callinfo
288 break 1,1
289 nop
290 nop
291 .procend
292#endif
293
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301
302smp_slave_stext:
303 .proc
304 .callinfo
305
306
307
308
309 mtsp %r0,%sr4
310 mtsp %r0,%sr5
311 mtsp %r0,%sr6
312 mtsp %r0,%sr7
313
314
315 load32 PA(smp_init_current_idle_task),%sp
316 LDREG 0(%sp),%sp
317 tophys_r1 %sp
318 LDREG TASK_THREAD_INFO(%sp),%sp
319 mtctl %sp,%cr30
320 ldo THREAD_SZ_ALGN(%sp),%sp
321
322
323 load32 PA(swapper_pg_dir),%r4
324 mtctl %r4,%cr24
325 mtctl %r4,%cr25
326
327#ifdef CONFIG_64BIT
328
329 copy %arg0,%r3
330#else
331
332 load32 smp_callin_rtn,%r2
333#endif
334
335
336 load32 smp_callin,%r11
337
338
339 b common_stext
340 nop
341
342 .procend
343#endif
344
345ENDPROC(stext)
346
347#ifndef CONFIG_64BIT
348 .section .data.read_mostly
349
350 .align 4
351 .export $global$,data
352
353 .type $global$,@object
354 .size $global$,4
355$global$:
356 .word 0
357#endif
358