aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mm/proc-xscale.S
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mm/proc-xscale.S
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mm/proc-xscale.S')
-rw-r--r--arch/arm/mm/proc-xscale.S934
1 files changed, 934 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
new file mode 100644
index 000000000000..2d977b4eeeab
--- /dev/null
+++ b/arch/arm/mm/proc-xscale.S
@@ -0,0 +1,934 @@
1/*
2 * linux/arch/arm/mm/proc-xscale.S
3 *
4 * Author: Nicolas Pitre
5 * Created: November 2000
6 * Copyright: (C) 2000, 2001 MontaVista Software Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * MMU functions for the Intel XScale CPUs
13 *
14 * 2001 Aug 21:
15 * some contributions by Brett Gaines <brett.w.gaines@intel.com>
16 * Copyright 2001 by Intel Corp.
17 *
18 * 2001 Sep 08:
19 * Completely revisited, many important fixes
20 * Nicolas Pitre <nico@cam.org>
21 */
22
23#include <linux/linkage.h>
24#include <linux/init.h>
25#include <asm/assembler.h>
26#include <asm/procinfo.h>
27#include <asm/hardware.h>
28#include <asm/pgtable.h>
29#include <asm/page.h>
30#include <asm/ptrace.h>
31#include "proc-macros.S"
32
33/*
34 * This is the maximum size of an area which will be flushed. If the area
35 * is larger than this, then we flush the whole cache
36 */
37#define MAX_AREA_SIZE 32768
38
39/*
40 * the cache line size of the I and D cache
41 */
42#define CACHELINESIZE 32
43
44/*
45 * the size of the data cache
46 */
47#define CACHESIZE 32768
48
49/*
50 * Virtual address used to allocate the cache when flushed
51 *
52 * This must be an address range which is _never_ used. It should
53 * apparently have a mapping in the corresponding page table for
54 * compatibility with future CPUs that _could_ require it. For instance we
55 * don't care.
56 *
57 * This must be aligned on a 2*CACHESIZE boundary. The code selects one of
58 * the 2 areas in alternance each time the clean_d_cache macro is used.
59 * Without this the XScale core exhibits cache eviction problems and no one
60 * knows why.
61 *
62 * Reminder: the vector table is located at 0xffff0000-0xffff0fff.
63 */
64#define CLEAN_ADDR 0xfffe0000
65
66/*
67 * This macro is used to wait for a CP15 write and is needed
68 * when we have to ensure that the last operation to the co-pro
69 * was completed before continuing with operation.
70 */
71 .macro cpwait, rd
72 mrc p15, 0, \rd, c2, c0, 0 @ arbitrary read of cp15
73 mov \rd, \rd @ wait for completion
74 sub pc, pc, #4 @ flush instruction pipeline
75 .endm
76
77 .macro cpwait_ret, lr, rd
78 mrc p15, 0, \rd, c2, c0, 0 @ arbitrary read of cp15
79 sub pc, \lr, \rd, LSR #32 @ wait for completion and
80 @ flush instruction pipeline
81 .endm
82
83/*
84 * This macro cleans the entire dcache using line allocate.
85 * The main loop has been unrolled to reduce loop overhead.
86 * rd and rs are two scratch registers.
87 */
88 .macro clean_d_cache, rd, rs
89 ldr \rs, =clean_addr
90 ldr \rd, [\rs]
91 eor \rd, \rd, #CACHESIZE
92 str \rd, [\rs]
93 add \rs, \rd, #CACHESIZE
941: mcr p15, 0, \rd, c7, c2, 5 @ allocate D cache line
95 add \rd, \rd, #CACHELINESIZE
96 mcr p15, 0, \rd, c7, c2, 5 @ allocate D cache line
97 add \rd, \rd, #CACHELINESIZE
98 mcr p15, 0, \rd, c7, c2, 5 @ allocate D cache line
99 add \rd, \rd, #CACHELINESIZE
100 mcr p15, 0, \rd, c7, c2, 5 @ allocate D cache line
101 add \rd, \rd, #CACHELINESIZE
102 teq \rd, \rs
103 bne 1b
104 .endm
105
106 .data
107clean_addr: .word CLEAN_ADDR
108
109 .text
110
111/*
112 * cpu_xscale_proc_init()
113 *
114 * Nothing too exciting at the moment
115 */
116ENTRY(cpu_xscale_proc_init)
117 mov pc, lr
118
119/*
120 * cpu_xscale_proc_fin()
121 */
122ENTRY(cpu_xscale_proc_fin)
123 str lr, [sp, #-4]!
124 mov r0, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
125 msr cpsr_c, r0
126 bl xscale_flush_kern_cache_all @ clean caches
127 mrc p15, 0, r0, c1, c0, 0 @ ctrl register
128 bic r0, r0, #0x1800 @ ...IZ...........
129 bic r0, r0, #0x0006 @ .............CA.
130 mcr p15, 0, r0, c1, c0, 0 @ disable caches
131 ldr pc, [sp], #4
132
133/*
134 * cpu_xscale_reset(loc)
135 *
136 * Perform a soft reset of the system. Put the CPU into the
137 * same state as it would be if it had been reset, and branch
138 * to what would be the reset vector.
139 *
140 * loc: location to jump to for soft reset
141 */
142 .align 5
143ENTRY(cpu_xscale_reset)
144 mov r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
145 msr cpsr_c, r1 @ reset CPSR
146 mrc p15, 0, r1, c1, c0, 0 @ ctrl register
147 bic r1, r1, #0x0086 @ ........B....CA.
148 bic r1, r1, #0x3900 @ ..VIZ..S........
149 mcr p15, 0, r1, c1, c0, 0 @ ctrl register
150 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches & BTB
151 bic r1, r1, #0x0001 @ ...............M
152 mcr p15, 0, r1, c1, c0, 0 @ ctrl register
153 @ CAUTION: MMU turned off from this point. We count on the pipeline
154 @ already containing those two last instructions to survive.
155 mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
156 mov pc, r0
157
158/*
159 * cpu_xscale_do_idle()
160 *
161 * Cause the processor to idle
162 *
163 * For now we do nothing but go to idle mode for every case
164 *
165 * XScale supports clock switching, but using idle mode support
166 * allows external hardware to react to system state changes.
167 */
168 .align 5
169
170ENTRY(cpu_xscale_do_idle)
171 mov r0, #1
172 mcr p14, 0, r0, c7, c0, 0 @ Go to IDLE
173 mov pc, lr
174
175/* ================================= CACHE ================================ */
176
177/*
178 * flush_user_cache_all()
179 *
180 * Invalidate all cache entries in a particular address
181 * space.
182 */
183ENTRY(xscale_flush_user_cache_all)
184 /* FALLTHROUGH */
185
186/*
187 * flush_kern_cache_all()
188 *
189 * Clean and invalidate the entire cache.
190 */
191ENTRY(xscale_flush_kern_cache_all)
192 mov r2, #VM_EXEC
193 mov ip, #0
194__flush_whole_cache:
195 clean_d_cache r0, r1
196 tst r2, #VM_EXEC
197 mcrne p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB
198 mcrne p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
199 mov pc, lr
200
201/*
202 * flush_user_cache_range(start, end, vm_flags)
203 *
204 * Invalidate a range of cache entries in the specified
205 * address space.
206 *
207 * - start - start address (may not be aligned)
208 * - end - end address (exclusive, may not be aligned)
209 * - vma - vma_area_struct describing address space
210 */
211 .align 5
212ENTRY(xscale_flush_user_cache_range)
213 mov ip, #0
214 sub r3, r1, r0 @ calculate total size
215 cmp r3, #MAX_AREA_SIZE
216 bhs __flush_whole_cache
217
2181: tst r2, #VM_EXEC
219 mcrne p15, 0, r0, c7, c5, 1 @ Invalidate I cache line
220 mcr p15, 0, r0, c7, c10, 1 @ Clean D cache line
221 mcr p15, 0, r0, c7, c6, 1 @ Invalidate D cache line
222 add r0, r0, #CACHELINESIZE
223 cmp r0, r1
224 blo 1b
225 tst r2, #VM_EXEC
226 mcrne p15, 0, ip, c7, c5, 6 @ Invalidate BTB
227 mcrne p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
228 mov pc, lr
229
230/*
231 * coherent_kern_range(start, end)
232 *
233 * Ensure coherency between the Icache and the Dcache in the
234 * region described by start. If you have non-snooping
235 * Harvard caches, you need to implement this function.
236 *
237 * - start - virtual start address
238 * - end - virtual end address
239 *
240 * Note: single I-cache line invalidation isn't used here since
241 * it also trashes the mini I-cache used by JTAG debuggers.
242 */
243ENTRY(xscale_coherent_kern_range)
244 /* FALLTHROUGH */
245
246/*
247 * coherent_user_range(start, end)
248 *
249 * Ensure coherency between the Icache and the Dcache in the
250 * region described by start. If you have non-snooping
251 * Harvard caches, you need to implement this function.
252 *
253 * - start - virtual start address
254 * - end - virtual end address
255 *
256 * Note: single I-cache line invalidation isn't used here since
257 * it also trashes the mini I-cache used by JTAG debuggers.
258 */
259ENTRY(xscale_coherent_user_range)
260 bic r0, r0, #CACHELINESIZE - 1
2611: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
262 add r0, r0, #CACHELINESIZE
263 cmp r0, r1
264 blo 1b
265 mov r0, #0
266 mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB
267 mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
268 mov pc, lr
269
270/*
271 * flush_kern_dcache_page(void *page)
272 *
273 * Ensure no D cache aliasing occurs, either with itself or
274 * the I cache
275 *
276 * - addr - page aligned address
277 */
278ENTRY(xscale_flush_kern_dcache_page)
279 add r1, r0, #PAGE_SZ
2801: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
281 mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
282 add r0, r0, #CACHELINESIZE
283 cmp r0, r1
284 blo 1b
285 mov r0, #0
286 mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB
287 mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
288 mov pc, lr
289
290/*
291 * dma_inv_range(start, end)
292 *
293 * Invalidate (discard) the specified virtual address range.
294 * May not write back any entries. If 'start' or 'end'
295 * are not cache line aligned, those lines must be written
296 * back.
297 *
298 * - start - virtual start address
299 * - end - virtual end address
300 */
301ENTRY(xscale_dma_inv_range)
302 mrc p15, 0, r2, c0, c0, 0 @ read ID
303 eor r2, r2, #0x69000000
304 eor r2, r2, #0x00052000
305 bics r2, r2, #1
306 beq xscale_dma_flush_range
307
308 tst r0, #CACHELINESIZE - 1
309 bic r0, r0, #CACHELINESIZE - 1
310 mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
311 tst r1, #CACHELINESIZE - 1
312 mcrne p15, 0, r1, c7, c10, 1 @ clean D entry
3131: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
314 add r0, r0, #CACHELINESIZE
315 cmp r0, r1
316 blo 1b
317 mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
318 mov pc, lr
319
320/*
321 * dma_clean_range(start, end)
322 *
323 * Clean the specified virtual address range.
324 *
325 * - start - virtual start address
326 * - end - virtual end address
327 */
328ENTRY(xscale_dma_clean_range)
329 bic r0, r0, #CACHELINESIZE - 1
3301: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
331 add r0, r0, #CACHELINESIZE
332 cmp r0, r1
333 blo 1b
334 mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
335 mov pc, lr
336
337/*
338 * dma_flush_range(start, end)
339 *
340 * Clean and invalidate the specified virtual address range.
341 *
342 * - start - virtual start address
343 * - end - virtual end address
344 */
345ENTRY(xscale_dma_flush_range)
346 bic r0, r0, #CACHELINESIZE - 1
3471: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
348 mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
349 add r0, r0, #CACHELINESIZE
350 cmp r0, r1
351 blo 1b
352 mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
353 mov pc, lr
354
355ENTRY(xscale_cache_fns)
356 .long xscale_flush_kern_cache_all
357 .long xscale_flush_user_cache_all
358 .long xscale_flush_user_cache_range
359 .long xscale_coherent_kern_range
360 .long xscale_coherent_user_range
361 .long xscale_flush_kern_dcache_page
362 .long xscale_dma_inv_range
363 .long xscale_dma_clean_range
364 .long xscale_dma_flush_range
365
366ENTRY(cpu_xscale_dcache_clean_area)
3671: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
368 add r0, r0, #CACHELINESIZE
369 subs r1, r1, #CACHELINESIZE
370 bhi 1b
371 mov pc, lr
372
373/* ================================ CACHE LOCKING============================
374 *
375 * The XScale MicroArchitecture implements support for locking entries into
376 * the data and instruction cache. The following functions implement the core
377 * low level instructions needed to accomplish the locking. The developer's
378 * manual states that the code that performs the locking must be in non-cached
379 * memory. To accomplish this, the code in xscale-cache-lock.c copies the
380 * following functions from the cache into a non-cached memory region that
381 * is allocated through consistent_alloc().
382 *
383 */
384 .align 5
385/*
386 * xscale_icache_lock
387 *
388 * r0: starting address to lock
389 * r1: end address to lock
390 */
391ENTRY(xscale_icache_lock)
392
393iLockLoop:
394 bic r0, r0, #CACHELINESIZE - 1
395 mcr p15, 0, r0, c9, c1, 0 @ lock into cache
396 cmp r0, r1 @ are we done?
397 add r0, r0, #CACHELINESIZE @ advance to next cache line
398 bls iLockLoop
399 mov pc, lr
400
401/*
402 * xscale_icache_unlock
403 */
404ENTRY(xscale_icache_unlock)
405 mcr p15, 0, r0, c9, c1, 1 @ Unlock icache
406 mov pc, lr
407
408/*
409 * xscale_dcache_lock
410 *
411 * r0: starting address to lock
412 * r1: end address to lock
413 */
414ENTRY(xscale_dcache_lock)
415 mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
416 mov r2, #1
417 mcr p15, 0, r2, c9, c2, 0 @ Put dcache in lock mode
418 cpwait ip @ Wait for completion
419
420 mrs r2, cpsr
421 orr r3, r2, #PSR_F_BIT | PSR_I_BIT
422dLockLoop:
423 msr cpsr_c, r3
424 mcr p15, 0, r0, c7, c10, 1 @ Write back line if it is dirty
425 mcr p15, 0, r0, c7, c6, 1 @ Flush/invalidate line
426 msr cpsr_c, r2
427 ldr ip, [r0], #CACHELINESIZE @ Preload 32 bytes into cache from
428 @ location [r0]. Post-increment
429 @ r3 to next cache line
430 cmp r0, r1 @ Are we done?
431 bls dLockLoop
432
433 mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
434 mov r2, #0
435 mcr p15, 0, r2, c9, c2, 0 @ Get out of lock mode
436 cpwait_ret lr, ip
437
438/*
439 * xscale_dcache_unlock
440 */
441ENTRY(xscale_dcache_unlock)
442 mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
443 mcr p15, 0, ip, c9, c2, 1 @ Unlock cache
444 mov pc, lr
445
446/*
447 * Needed to determine the length of the code that needs to be copied.
448 */
449 .align 5
450ENTRY(xscale_cache_dummy)
451 mov pc, lr
452
453/* ================================ TLB LOCKING==============================
454 *
455 * The XScale MicroArchitecture implements support for locking entries into
456 * the Instruction and Data TLBs. The following functions provide the
457 * low level support for supporting these under Linux. xscale-lock.c
458 * implements some higher level management code. Most of the following
459 * is taken straight out of the Developer's Manual.
460 */
461
462/*
463 * Lock I-TLB entry
464 *
465 * r0: Virtual address to translate and lock
466 */
467 .align 5
468ENTRY(xscale_itlb_lock)
469 mrs r2, cpsr
470 orr r3, r2, #PSR_F_BIT | PSR_I_BIT
471 msr cpsr_c, r3 @ Disable interrupts
472 mcr p15, 0, r0, c8, c5, 1 @ Invalidate I-TLB entry
473 mcr p15, 0, r0, c10, c4, 0 @ Translate and lock
474 msr cpsr_c, r2 @ Restore interrupts
475 cpwait_ret lr, ip
476
477/*
478 * Lock D-TLB entry
479 *
480 * r0: Virtual address to translate and lock
481 */
482 .align 5
483ENTRY(xscale_dtlb_lock)
484 mrs r2, cpsr
485 orr r3, r2, #PSR_F_BIT | PSR_I_BIT
486 msr cpsr_c, r3 @ Disable interrupts
487 mcr p15, 0, r0, c8, c6, 1 @ Invalidate D-TLB entry
488 mcr p15, 0, r0, c10, c8, 0 @ Translate and lock
489 msr cpsr_c, r2 @ Restore interrupts
490 cpwait_ret lr, ip
491
492/*
493 * Unlock all I-TLB entries
494 */
495 .align 5
496ENTRY(xscale_itlb_unlock)
497 mcr p15, 0, ip, c10, c4, 1 @ Unlock I-TLB
498 mcr p15, 0, ip, c8, c5, 0 @ Invalidate I-TLB
499 cpwait_ret lr, ip
500
501/*
502 * Unlock all D-TLB entries
503 */
504ENTRY(xscale_dtlb_unlock)
505 mcr p15, 0, ip, c10, c8, 1 @ Unlock D-TBL
506 mcr p15, 0, ip, c8, c6, 0 @ Invalidate D-TLB
507 cpwait_ret lr, ip
508
509/* =============================== PageTable ============================== */
510
511#define PTE_CACHE_WRITE_ALLOCATE 0
512
513/*
514 * cpu_xscale_switch_mm(pgd)
515 *
516 * Set the translation base pointer to be as described by pgd.
517 *
518 * pgd: new page tables
519 */
520 .align 5
521ENTRY(cpu_xscale_switch_mm)
522 clean_d_cache r1, r2
523 mcr p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB
524 mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
525 mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
526 mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
527 cpwait_ret lr, ip
528
529/*
530 * cpu_xscale_set_pte(ptep, pte)
531 *
532 * Set a PTE and flush it out
533 *
534 * Errata 40: must set memory to write-through for user read-only pages.
535 */
536 .align 5
537ENTRY(cpu_xscale_set_pte)
538 str r1, [r0], #-2048 @ linux version
539
540 bic r2, r1, #0xff0
541 orr r2, r2, #PTE_TYPE_EXT @ extended page
542
543 eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
544
545 tst r3, #L_PTE_USER @ User?
546 orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w
547
548 tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty?
549 orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w
550 @ combined with user -> user r/w
551
552 @
553 @ Handle the X bit. We want to set this bit for the minicache
554 @ (U = E = B = W = 0, C = 1) or when write allocate is enabled,
555 @ and we have a writeable, cacheable region. If we ignore the
556 @ U and E bits, we can allow user space to use the minicache as
557 @ well.
558 @
559 @ X = (C & ~W & ~B) | (C & W & B & write_allocate)
560 @
561 eor ip, r1, #L_PTE_CACHEABLE
562 tst ip, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE
563#if PTE_CACHE_WRITE_ALLOCATE
564 eorne ip, r1, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE
565 tstne ip, #L_PTE_CACHEABLE | L_PTE_WRITE | L_PTE_BUFFERABLE
566#endif
567 orreq r2, r2, #PTE_EXT_TEX(1)
568
569 @
570 @ Erratum 40: The B bit must be cleared for a user read-only
571 @ cacheable page.
572 @
573 @ B = B & ~(U & C & ~W)
574 @
575 and ip, r1, #L_PTE_USER | L_PTE_WRITE | L_PTE_CACHEABLE
576 teq ip, #L_PTE_USER | L_PTE_CACHEABLE
577 biceq r2, r2, #PTE_BUFFERABLE
578
579 tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young?
580 movne r2, #0 @ no -> fault
581
582 str r2, [r0] @ hardware version
583 mov ip, #0
584 mcr p15, 0, r0, c7, c10, 1 @ Clean D cache line
585 mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
586 mov pc, lr
587
588
589 .ltorg
590
591 .align
592
593 __INIT
594
595 .type __xscale_setup, #function
596__xscale_setup:
597 mcr p15, 0, ip, c7, c7, 0 @ invalidate I, D caches & BTB
598 mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
599 mcr p15, 0, ip, c8, c7, 0 @ invalidate I, D TLBs
600#ifdef CONFIG_IWMMXT
601 mov r0, #0 @ initially disallow access to CP0/CP1
602#else
603 mov r0, #1 @ Allow access to CP0
604#endif
605 orr r0, r0, #1 << 6 @ cp6 for IOP3xx and Bulverde
606 orr r0, r0, #1 << 13 @ Its undefined whether this
607 mcr p15, 0, r0, c15, c1, 0 @ affects USR or SVC modes
608 mrc p15, 0, r0, c1, c0, 0 @ get control register
609 ldr r5, xscale_cr1_clear
610 bic r0, r0, r5
611 ldr r5, xscale_cr1_set
612 orr r0, r0, r5
613 mov pc, lr
614 .size __xscale_setup, . - __xscale_setup
615
616 /*
617 * R
618 * .RVI ZFRS BLDP WCAM
619 * ..11 1.01 .... .101
620 *
621 */
622 .type xscale_cr1_clear, #object
623 .type xscale_cr1_set, #object
624xscale_cr1_clear:
625 .word 0x3b07
626xscale_cr1_set:
627 .word 0x3905
628
629 __INITDATA
630
631/*
632 * Purpose : Function pointers used to access above functions - all calls
633 * come through these
634 */
635
636 .type xscale_processor_functions, #object
637ENTRY(xscale_processor_functions)
638 .word v5t_early_abort
639 .word cpu_xscale_proc_init
640 .word cpu_xscale_proc_fin
641 .word cpu_xscale_reset
642 .word cpu_xscale_do_idle
643 .word cpu_xscale_dcache_clean_area
644 .word cpu_xscale_switch_mm
645 .word cpu_xscale_set_pte
646 .size xscale_processor_functions, . - xscale_processor_functions
647
648 .section ".rodata"
649
650 .type cpu_arch_name, #object
651cpu_arch_name:
652 .asciz "armv5te"
653 .size cpu_arch_name, . - cpu_arch_name
654
655 .type cpu_elf_name, #object
656cpu_elf_name:
657 .asciz "v5"
658 .size cpu_elf_name, . - cpu_elf_name
659
660 .type cpu_80200_name, #object
661cpu_80200_name:
662 .asciz "XScale-80200"
663 .size cpu_80200_name, . - cpu_80200_name
664
665 .type cpu_8032x_name, #object
666cpu_8032x_name:
667 .asciz "XScale-IOP8032x Family"
668 .size cpu_8032x_name, . - cpu_8032x_name
669
670 .type cpu_8033x_name, #object
671cpu_8033x_name:
672 .asciz "XScale-IOP8033x Family"
673 .size cpu_8033x_name, . - cpu_8033x_name
674
675 .type cpu_pxa250_name, #object
676cpu_pxa250_name:
677 .asciz "XScale-PXA250"
678 .size cpu_pxa250_name, . - cpu_pxa250_name
679
680 .type cpu_pxa210_name, #object
681cpu_pxa210_name:
682 .asciz "XScale-PXA210"
683 .size cpu_pxa210_name, . - cpu_pxa210_name
684
685 .type cpu_ixp42x_name, #object
686cpu_ixp42x_name:
687 .asciz "XScale-IXP42x Family"
688 .size cpu_ixp42x_name, . - cpu_ixp42x_name
689
690 .type cpu_ixp46x_name, #object
691cpu_ixp46x_name:
692 .asciz "XScale-IXP46x Family"
693 .size cpu_ixp46x_name, . - cpu_ixp46x_name
694
695 .type cpu_ixp2400_name, #object
696cpu_ixp2400_name:
697 .asciz "XScale-IXP2400"
698 .size cpu_ixp2400_name, . - cpu_ixp2400_name
699
700 .type cpu_ixp2800_name, #object
701cpu_ixp2800_name:
702 .asciz "XScale-IXP2800"
703 .size cpu_ixp2800_name, . - cpu_ixp2800_name
704
705 .type cpu_pxa255_name, #object
706cpu_pxa255_name:
707 .asciz "XScale-PXA255"
708 .size cpu_pxa255_name, . - cpu_pxa255_name
709
710 .type cpu_pxa270_name, #object
711cpu_pxa270_name:
712 .asciz "XScale-PXA270"
713 .size cpu_pxa270_name, . - cpu_pxa270_name
714
715 .align
716
717 .section ".proc.info", #alloc, #execinstr
718
719 .type __80200_proc_info,#object
720__80200_proc_info:
721 .long 0x69052000
722 .long 0xfffffff0
723 .long PMD_TYPE_SECT | \
724 PMD_SECT_BUFFERABLE | \
725 PMD_SECT_CACHEABLE | \
726 PMD_SECT_AP_WRITE | \
727 PMD_SECT_AP_READ
728 b __xscale_setup
729 .long cpu_arch_name
730 .long cpu_elf_name
731 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
732 .long cpu_80200_name
733 .long xscale_processor_functions
734 .long v4wbi_tlb_fns
735 .long xscale_mc_user_fns
736 .long xscale_cache_fns
737 .size __80200_proc_info, . - __80200_proc_info
738
739 .type __8032x_proc_info,#object
740__8032x_proc_info:
741 .long 0x69052420
742 .long 0xfffff5e0 @ mask should accomodate IOP80219 also
743 .long PMD_TYPE_SECT | \
744 PMD_SECT_BUFFERABLE | \
745 PMD_SECT_CACHEABLE | \
746 PMD_SECT_AP_WRITE | \
747 PMD_SECT_AP_READ
748 b __xscale_setup
749 .long cpu_arch_name
750 .long cpu_elf_name
751 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
752 .long cpu_8032x_name
753 .long xscale_processor_functions
754 .long v4wbi_tlb_fns
755 .long xscale_mc_user_fns
756 .long xscale_cache_fns
757 .size __8032x_proc_info, . - __8032x_proc_info
758
759 .type __8033x_proc_info,#object
760__8033x_proc_info:
761 .long 0x69054010
762 .long 0xffffff30
763 .long PMD_TYPE_SECT | \
764 PMD_SECT_BUFFERABLE | \
765 PMD_SECT_CACHEABLE | \
766 PMD_SECT_AP_WRITE | \
767 PMD_SECT_AP_READ
768 b __xscale_setup
769 .long cpu_arch_name
770 .long cpu_elf_name
771 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
772 .long cpu_8033x_name
773 .long xscale_processor_functions
774 .long v4wbi_tlb_fns
775 .long xscale_mc_user_fns
776 .long xscale_cache_fns
777 .size __8033x_proc_info, . - __8033x_proc_info
778
779 .type __pxa250_proc_info,#object
780__pxa250_proc_info:
781 .long 0x69052100
782 .long 0xfffff7f0
783 .long PMD_TYPE_SECT | \
784 PMD_SECT_BUFFERABLE | \
785 PMD_SECT_CACHEABLE | \
786 PMD_SECT_AP_WRITE | \
787 PMD_SECT_AP_READ
788 b __xscale_setup
789 .long cpu_arch_name
790 .long cpu_elf_name
791 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
792 .long cpu_pxa250_name
793 .long xscale_processor_functions
794 .long v4wbi_tlb_fns
795 .long xscale_mc_user_fns
796 .long xscale_cache_fns
797 .size __pxa250_proc_info, . - __pxa250_proc_info
798
799 .type __pxa210_proc_info,#object
800__pxa210_proc_info:
801 .long 0x69052120
802 .long 0xfffff3f0
803 .long PMD_TYPE_SECT | \
804 PMD_SECT_BUFFERABLE | \
805 PMD_SECT_CACHEABLE | \
806 PMD_SECT_AP_WRITE | \
807 PMD_SECT_AP_READ
808 b __xscale_setup
809 .long cpu_arch_name
810 .long cpu_elf_name
811 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
812 .long cpu_pxa210_name
813 .long xscale_processor_functions
814 .long v4wbi_tlb_fns
815 .long xscale_mc_user_fns
816 .long xscale_cache_fns
817 .size __pxa210_proc_info, . - __pxa210_proc_info
818
819 .type __ixp2400_proc_info, #object
820__ixp2400_proc_info:
821 .long 0x69054190
822 .long 0xfffffff0
823 .long PMD_TYPE_SECT | \
824 PMD_SECT_BUFFERABLE | \
825 PMD_SECT_CACHEABLE | \
826 PMD_SECT_AP_WRITE | \
827 PMD_SECT_AP_READ
828 b __xscale_setup
829 .long cpu_arch_name
830 .long cpu_elf_name
831 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
832 .long cpu_ixp2400_name
833 .long xscale_processor_functions
834 .long v4wbi_tlb_fns
835 .long xscale_mc_user_fns
836 .long xscale_cache_fns
837 .size __ixp2400_proc_info, . - __ixp2400_proc_info
838
839 .type __ixp2800_proc_info, #object
840__ixp2800_proc_info:
841 .long 0x690541a0
842 .long 0xfffffff0
843 .long PMD_TYPE_SECT | \
844 PMD_SECT_BUFFERABLE | \
845 PMD_SECT_CACHEABLE | \
846 PMD_SECT_AP_WRITE | \
847 PMD_SECT_AP_READ
848 b __xscale_setup
849 .long cpu_arch_name
850 .long cpu_elf_name
851 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
852 .long cpu_ixp2800_name
853 .long xscale_processor_functions
854 .long v4wbi_tlb_fns
855 .long xscale_mc_user_fns
856 .long xscale_cache_fns
857 .size __ixp2800_proc_info, . - __ixp2800_proc_info
858
859 .type __ixp42x_proc_info, #object
860__ixp42x_proc_info:
861 .long 0x690541c0
862 .long 0xffffffc0
863 .long PMD_TYPE_SECT | \
864 PMD_SECT_BUFFERABLE | \
865 PMD_SECT_CACHEABLE | \
866 PMD_SECT_AP_WRITE | \
867 PMD_SECT_AP_READ
868 b __xscale_setup
869 .long cpu_arch_name
870 .long cpu_elf_name
871 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
872 .long cpu_ixp42x_name
873 .long xscale_processor_functions
874 .long v4wbi_tlb_fns
875 .long xscale_mc_user_fns
876 .long xscale_cache_fns
877 .size __ixp42x_proc_info, . - __ixp42x_proc_info
878
879 .type __ixp46x_proc_info, #object
880__ixp46x_proc_info:
881 .long 0x69054200
882 .long 0xffffff00
883 .long 0x00000c0e
884 b __xscale_setup
885 .long cpu_arch_name
886 .long cpu_elf_name
887 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
888 .long cpu_ixp46x_name
889 .long xscale_processor_functions
890 .long v4wbi_tlb_fns
891 .long xscale_mc_user_fns
892 .long xscale_cache_fns
893 .size __ixp46x_proc_info, . - __ixp46x_proc_info
894
895 .type __pxa255_proc_info,#object
896__pxa255_proc_info:
897 .long 0x69052d00
898 .long 0xfffffff0
899 .long PMD_TYPE_SECT | \
900 PMD_SECT_BUFFERABLE | \
901 PMD_SECT_CACHEABLE | \
902 PMD_SECT_AP_WRITE | \
903 PMD_SECT_AP_READ
904 b __xscale_setup
905 .long cpu_arch_name
906 .long cpu_elf_name
907 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
908 .long cpu_pxa255_name
909 .long xscale_processor_functions
910 .long v4wbi_tlb_fns
911 .long xscale_mc_user_fns
912 .long xscale_cache_fns
913 .size __pxa255_proc_info, . - __pxa255_proc_info
914
915 .type __pxa270_proc_info,#object
916__pxa270_proc_info:
917 .long 0x69054110
918 .long 0xfffffff0
919 .long PMD_TYPE_SECT | \
920 PMD_SECT_BUFFERABLE | \
921 PMD_SECT_CACHEABLE | \
922 PMD_SECT_AP_WRITE | \
923 PMD_SECT_AP_READ
924 b __xscale_setup
925 .long cpu_arch_name
926 .long cpu_elf_name
927 .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
928 .long cpu_pxa270_name
929 .long xscale_processor_functions
930 .long v4wbi_tlb_fns
931 .long xscale_mc_user_fns
932 .long xscale_cache_fns
933 .size __pxa270_proc_info, . - __pxa270_proc_info
934
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 06:28:22 -0500