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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
911b2333 | 3 | Copyright 1994, 1995, 1996, 1997, 2003 Andrew Cagney |
c906108c SS |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _EMUL_CHIRP_C_ | |
23 | #define _EMUL_CHIRP_C_ | |
24 | ||
25 | /* Note: this module is called via a table. There is no benefit in | |
26 | making it inline */ | |
27 | ||
28 | #include "emul_generic.h" | |
29 | #include "emul_chirp.h" | |
30 | ||
31 | #ifdef HAVE_STRING_H | |
32 | #include <string.h> | |
33 | #else | |
34 | #ifdef HAVE_STRINGS_H | |
35 | #include <strings.h> | |
36 | #endif | |
37 | #endif | |
38 | ||
39 | #ifdef HAVE_UNISTD_H | |
40 | #include <unistd.h> | |
41 | #endif | |
42 | ||
43 | #ifndef STATIC_INLINE_EMUL_CHIRP | |
44 | #define STATIC_INLINE_EMUL_CHIRP STATIC_INLINE | |
45 | #endif | |
46 | ||
47 | ||
48 | /* EMULATION | |
49 | ||
50 | ||
51 | OpenFirmware - IEEE Standard for Boot (Initialization | |
52 | Configuration) Firmware. | |
53 | ||
54 | ||
55 | DESCRIPTION | |
56 | ||
57 | ||
58 | BUGS | |
59 | ||
60 | ||
61 | This code assumes that the memory node has #address-cells and | |
62 | #size-cells set to one. For future implementations, this may not | |
63 | be the case. | |
64 | ||
65 | */ | |
66 | ||
67 | ||
68 | ||
69 | ||
70 | /* Descriptor of the open boot services being emulated */ | |
71 | ||
72 | typedef int (chirp_handler) | |
73 | (os_emul_data *data, | |
74 | cpu *processor, | |
75 | unsigned_word cia); | |
76 | ||
77 | typedef struct _chirp_services { | |
78 | const char *name; | |
79 | chirp_handler *handler; | |
80 | } chirp_services; | |
81 | ||
82 | ||
83 | /* The OpenBoot emulation is, at any time either waiting for a client | |
84 | request or waiting on a client callback */ | |
85 | typedef enum { | |
86 | serving, | |
87 | emulating, | |
88 | faulting, | |
89 | } chirp_emul_state; | |
90 | ||
91 | struct _os_emul_data { | |
92 | chirp_emul_state state; | |
93 | unsigned_word return_address; | |
94 | unsigned_word arguments; | |
95 | unsigned_word n_args; | |
96 | unsigned_word n_returns; | |
97 | chirp_services *service; | |
98 | device *root; | |
99 | chirp_services *services; | |
100 | /* configuration */ | |
101 | unsigned_word memory_size; | |
102 | unsigned_word real_base; | |
103 | unsigned_word real_size; | |
104 | unsigned_word virt_base; | |
105 | unsigned_word virt_size; | |
106 | int real_mode; | |
107 | int little_endian; | |
108 | int floating_point_available; | |
109 | int interrupt_prefix; | |
110 | unsigned_word load_base; | |
111 | /* hash table */ | |
112 | unsigned_word nr_page_table_entry_groups; | |
113 | unsigned_word htab_offset; | |
114 | unsigned_word htab_ra; | |
115 | unsigned_word htab_va; | |
116 | unsigned_word sizeof_htab; | |
117 | /* virtual address of htab */ | |
118 | unsigned_word stack_offset; | |
119 | unsigned_word stack_ra; | |
120 | unsigned_word stack_va; | |
121 | unsigned_word sizeof_stack; | |
122 | /* addresses of emulation instructions virtual/real */ | |
123 | unsigned_word code_offset; | |
124 | unsigned_word code_va; | |
125 | unsigned_word code_ra; | |
126 | unsigned_word sizeof_code; | |
127 | unsigned_word code_client_va; | |
128 | unsigned_word code_client_ra; | |
129 | unsigned_word code_callback_va; | |
130 | unsigned_word code_callback_ra; | |
131 | unsigned_word code_loop_va; | |
132 | unsigned_word code_loop_ra; | |
133 | }; | |
134 | ||
135 | ||
136 | /* returns the name of the corresponding Ihandle */ | |
137 | static const char * | |
138 | ihandle_name(device_instance *ihandle) | |
139 | { | |
140 | if (ihandle == NULL) | |
141 | return ""; | |
142 | else | |
143 | return device_name(device_instance_device(ihandle)); | |
144 | } | |
145 | ||
146 | ||
147 | ||
148 | /* Read/write the argument list making certain that all values are | |
149 | converted to/from host byte order. | |
150 | ||
151 | In the below only n_args+n_returns is read/written */ | |
152 | ||
153 | static int | |
154 | chirp_read_t2h_args(void *args, | |
155 | int sizeof_args, | |
156 | int n_args, | |
157 | int n_returns, | |
158 | os_emul_data *data, | |
159 | cpu *processor, | |
160 | unsigned_word cia) | |
161 | { | |
162 | unsigned_cell *words; | |
163 | int i; | |
164 | /* check against the number of arguments specified by the client | |
165 | program */ | |
166 | if ((n_args >= 0 && data->n_args != n_args) | |
167 | || (n_returns >= 0 && data->n_returns != n_returns)) { | |
168 | TRACE(trace_os_emul, ("%s - invalid nr of args - n_args=%ld, n_returns=%ld\n", | |
169 | data->service->name, | |
170 | (long)data->n_args, | |
171 | (long)data->n_returns)); | |
172 | return -1; | |
173 | } | |
174 | /* check that there is enough space */ | |
175 | if (sizeof(unsigned_cell) * (data->n_args + data->n_returns) > sizeof_args) | |
176 | return -1; | |
177 | /* bring in the data */ | |
178 | memset(args, 0, sizeof_args); | |
179 | emul_read_buffer(args, data->arguments + 3 * sizeof(unsigned_cell), | |
180 | sizeof(unsigned_cell) * (data->n_args + data->n_returns), | |
181 | processor, cia); | |
182 | /* convert all words to host format */ | |
183 | words = args; | |
184 | for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++) | |
185 | words[i] = T2H_cell(words[i]); | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static void | |
190 | chirp_write_h2t_args(void *args, | |
191 | int sizeof_args, | |
192 | os_emul_data *data, | |
193 | cpu *processor, | |
194 | unsigned_word cia) | |
195 | { | |
196 | int i; | |
197 | unsigned_cell *words; | |
198 | /* convert to target everything */ | |
199 | words = args; | |
200 | for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++) | |
201 | words[i] = H2T_cell(words[i]); | |
202 | /* bring in the data */ | |
203 | emul_write_buffer(args, data->arguments + 3 * sizeof(unsigned_cell), | |
204 | sizeof(unsigned_cell) * (data->n_args + data->n_returns), | |
205 | processor, cia); | |
206 | } | |
207 | ||
208 | ||
209 | /* OpenBoot emulation functions */ | |
210 | ||
211 | /* client interface */ | |
212 | ||
213 | static int | |
214 | chirp_emul_test(os_emul_data *data, | |
215 | cpu *processor, | |
216 | unsigned_word cia) | |
217 | { | |
218 | struct test_args { | |
219 | /*in*/ | |
220 | unsigned_cell name; /*string*/ | |
221 | /*out*/ | |
222 | unsigned_cell missing; | |
223 | } args; | |
224 | char name[32]; | |
225 | chirp_services *service = NULL; | |
226 | /* read in the arguments */ | |
227 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
228 | return -1; | |
229 | emul_read_string(name, args.name, sizeof(name), | |
230 | processor, cia); | |
231 | TRACE(trace_os_emul, ("test - in - name=`%s'\n", name)); | |
232 | /* see if we know about the service */ | |
233 | service = data->services; | |
234 | while (service->name != NULL && strcmp(service->name, name) != 0) { | |
235 | service++; | |
236 | } | |
237 | if (service->name == NULL) | |
238 | args.missing = -1; | |
239 | else | |
240 | args.missing = 0; | |
241 | /* write the arguments back out */ | |
242 | TRACE(trace_os_emul, ("test - out - missing=%ld\n", | |
243 | (long)args.missing)); | |
244 | chirp_write_h2t_args(&args, | |
245 | sizeof(args), | |
246 | data, | |
247 | processor, cia); | |
248 | return 0; | |
249 | } | |
250 | ||
251 | ||
252 | /* Device tree */ | |
253 | ||
254 | static int | |
255 | chirp_emul_peer(os_emul_data *data, | |
256 | cpu *processor, | |
257 | unsigned_word cia) | |
258 | { | |
259 | struct peer_args { | |
260 | /*in*/ | |
261 | unsigned_cell phandle; | |
262 | /*out*/ | |
263 | unsigned_cell sibling_phandle; | |
264 | } args; | |
265 | device *phandle; | |
266 | device *sibling_phandle = NULL; | |
267 | /* read in the arguments */ | |
268 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
269 | return -1; | |
270 | phandle = external_to_device(data->root, args.phandle); | |
271 | TRACE(trace_os_emul, ("peer - in - phandle=0x%lx(0x%lx`%s')\n", | |
272 | (unsigned long)args.phandle, | |
273 | (unsigned long)phandle, | |
274 | (phandle == NULL ? "" : device_name(phandle)))); | |
275 | /* find the peer */ | |
276 | if (args.phandle == 0) { | |
277 | sibling_phandle = data->root; | |
278 | args.sibling_phandle = device_to_external(sibling_phandle); | |
279 | } | |
280 | else if (phandle == NULL) { | |
281 | sibling_phandle = NULL; | |
282 | args.sibling_phandle = -1; | |
283 | } | |
284 | else { | |
285 | sibling_phandle = device_sibling(phandle); | |
286 | if (sibling_phandle == NULL) | |
287 | args.sibling_phandle = 0; | |
288 | else | |
289 | args.sibling_phandle = device_to_external(sibling_phandle); | |
290 | } | |
291 | /* write the arguments back out */ | |
292 | TRACE(trace_os_emul, ("peer - out - sibling_phandle=0x%lx(0x%lx`%s')\n", | |
293 | (unsigned long)args.sibling_phandle, | |
294 | (unsigned long)sibling_phandle, | |
295 | (sibling_phandle == NULL ? "" : device_name(sibling_phandle)))); | |
296 | chirp_write_h2t_args(&args, | |
297 | sizeof(args), | |
298 | data, | |
299 | processor, cia); | |
300 | return 0; | |
301 | } | |
302 | ||
303 | static int | |
304 | chirp_emul_child(os_emul_data *data, | |
305 | cpu *processor, | |
306 | unsigned_word cia) | |
307 | { | |
308 | struct child_args { | |
309 | /*in*/ | |
310 | unsigned_cell phandle; | |
311 | /*out*/ | |
312 | unsigned_cell child_phandle; | |
313 | } args; | |
314 | device *phandle; | |
315 | device *child_phandle; | |
316 | /* read the arguments in */ | |
317 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
318 | return -1; | |
319 | phandle = external_to_device(data->root, args.phandle); | |
320 | TRACE(trace_os_emul, ("child - in - phandle=0x%lx(0x%lx`%s')\n", | |
321 | (unsigned long)args.phandle, | |
322 | (unsigned long)phandle, | |
323 | (phandle == NULL ? "" : device_name(phandle)))); | |
324 | /* find a child */ | |
325 | if (args.phandle == 0 | |
326 | || phandle == NULL) { | |
327 | child_phandle = NULL; | |
328 | args.child_phandle = -1; | |
329 | } | |
330 | else { | |
331 | child_phandle = device_child(phandle); | |
332 | if (child_phandle == NULL) | |
333 | args.child_phandle = 0; | |
334 | else | |
335 | args.child_phandle = device_to_external(child_phandle); | |
336 | } | |
337 | /* write the result out */ | |
338 | TRACE(trace_os_emul, ("child - out - child_phandle=0x%lx(0x%lx`%s')\n", | |
339 | (unsigned long)args.child_phandle, | |
340 | (unsigned long)child_phandle, | |
341 | (child_phandle == NULL ? "" : device_name(child_phandle)))); | |
342 | chirp_write_h2t_args(&args, | |
343 | sizeof(args), | |
344 | data, | |
345 | processor, cia); | |
346 | return 0; | |
347 | } | |
348 | ||
349 | static int | |
350 | chirp_emul_parent(os_emul_data *data, | |
351 | cpu *processor, | |
352 | unsigned_word cia) | |
353 | { | |
354 | struct parent_args { | |
355 | /*in*/ | |
356 | unsigned_cell phandle; | |
357 | /*out*/ | |
358 | unsigned_cell parent_phandle; | |
359 | } args; | |
360 | device *phandle; | |
361 | device *parent_phandle; | |
362 | /* read the args in */ | |
363 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
364 | return -1; | |
365 | phandle = external_to_device(data->root, args.phandle); | |
366 | TRACE(trace_os_emul, ("parent - in - phandle=0x%lx(0x%lx`%s')\n", | |
367 | (unsigned long)args.phandle, | |
368 | (unsigned long)phandle, | |
369 | (phandle == NULL ? "" : device_name(phandle)))); | |
370 | /* find a parent */ | |
371 | if (args.phandle == 0 | |
372 | || phandle == NULL) { | |
373 | parent_phandle = NULL; | |
374 | args.parent_phandle = -1; | |
375 | } | |
376 | else { | |
377 | parent_phandle = device_parent(phandle); | |
378 | if (parent_phandle == NULL) | |
379 | args.parent_phandle = 0; | |
380 | else | |
381 | args.parent_phandle = device_to_external(parent_phandle); | |
382 | } | |
383 | /* return the result */ | |
384 | TRACE(trace_os_emul, ("parent - out - parent_phandle=0x%lx(0x%lx`%s')\n", | |
385 | (unsigned long)args.parent_phandle, | |
386 | (unsigned long)parent_phandle, | |
387 | (parent_phandle == NULL ? "" : device_name(parent_phandle)))); | |
388 | chirp_write_h2t_args(&args, | |
389 | sizeof(args), | |
390 | data, | |
391 | processor, cia); | |
392 | return 0; | |
393 | } | |
394 | ||
395 | static int | |
396 | chirp_emul_instance_to_package(os_emul_data *data, | |
397 | cpu *processor, | |
398 | unsigned_word cia) | |
399 | { | |
400 | struct instance_to_package_args { | |
401 | /*in*/ | |
402 | unsigned_cell ihandle; | |
403 | /*out*/ | |
404 | unsigned_cell phandle; | |
405 | } args; | |
406 | device_instance *ihandle; | |
407 | device *phandle = NULL; | |
408 | /* read the args in */ | |
409 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
410 | return -1; | |
411 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
412 | TRACE(trace_os_emul, ("instance-to-package - in - ihandle=0x%lx(0x%lx`%s')\n", | |
413 | (unsigned long)args.ihandle, | |
414 | (unsigned long)ihandle, | |
415 | ihandle_name(ihandle))); | |
416 | /* find the corresponding phandle */ | |
417 | if (ihandle == NULL) { | |
418 | phandle = NULL; | |
419 | args.phandle = -1; | |
420 | } | |
421 | else { | |
422 | phandle = device_instance_device(ihandle); | |
423 | args.phandle = device_to_external(phandle); | |
424 | } | |
425 | /* return the result */ | |
426 | TRACE(trace_os_emul, ("instance-to-package - out - phandle=0x%lx(0x%lx`%s')\n", | |
427 | (unsigned long)args.phandle, | |
428 | (unsigned long)phandle, | |
429 | (phandle == NULL ? "" : device_name(phandle)))); | |
430 | chirp_write_h2t_args(&args, | |
431 | sizeof(args), | |
432 | data, | |
433 | processor, cia); | |
434 | return 0; | |
435 | } | |
436 | ||
437 | static int | |
438 | chirp_emul_getproplen(os_emul_data *data, | |
439 | cpu *processor, | |
440 | unsigned_word cia) | |
441 | { | |
442 | struct getproplen_args { | |
443 | /*in*/ | |
444 | unsigned_cell phandle; | |
445 | unsigned_cell name; | |
446 | /*out*/ | |
447 | unsigned_cell proplen; | |
448 | } args; | |
449 | char name[32]; | |
450 | device *phandle; | |
451 | /* read the args in */ | |
452 | if (chirp_read_t2h_args(&args, sizeof(args), 2, 1, data, processor, cia)) | |
453 | return -1; | |
454 | phandle = external_to_device(data->root, args.phandle); | |
455 | emul_read_string(name, | |
456 | args.name, | |
457 | sizeof(name), | |
458 | processor, cia); | |
459 | TRACE(trace_os_emul, ("getproplen - in - phandle=0x%lx(0x%lx`%s') name=`%s'\n", | |
460 | (unsigned long)args.phandle, | |
461 | (unsigned long)phandle, | |
462 | (phandle == NULL ? "" : device_name(phandle)), | |
463 | name)); | |
464 | /* find our prop and get its length */ | |
465 | if (args.phandle == 0 | |
466 | || phandle == NULL) { | |
467 | args.proplen = -1; | |
468 | } | |
469 | else { | |
470 | const device_property *prop = device_find_property(phandle, name); | |
471 | if (prop == (device_property*)0) { | |
472 | args.proplen = -1; | |
473 | } | |
474 | else { | |
475 | args.proplen = prop->sizeof_array; | |
476 | } | |
477 | } | |
478 | /* return the result */ | |
479 | TRACE(trace_os_emul, ("getproplen - out - proplen=%ld\n", | |
480 | (unsigned long)args.proplen)); | |
481 | chirp_write_h2t_args(&args, | |
482 | sizeof(args), | |
483 | data, | |
484 | processor, cia); | |
485 | return 0; | |
486 | } | |
487 | ||
488 | static int | |
489 | chirp_emul_getprop(os_emul_data *data, | |
490 | cpu *processor, | |
491 | unsigned_word cia) | |
492 | { | |
493 | struct getprop_args { | |
494 | /*in*/ | |
495 | unsigned_cell phandle; | |
496 | unsigned_cell name; | |
497 | unsigned_cell buf; | |
498 | unsigned_cell buflen; | |
499 | /*out*/ | |
500 | unsigned_cell size; | |
501 | } args; | |
502 | char name[32]; | |
503 | device *phandle; | |
504 | /* read in the args, the return is optional */ | |
505 | if (chirp_read_t2h_args(&args, sizeof(args), 4, -1, data, processor, cia)) | |
506 | return -1; | |
507 | phandle = external_to_device(data->root, args.phandle); | |
508 | emul_read_string(name, | |
509 | args.name, | |
510 | sizeof(name), | |
511 | processor, cia); | |
512 | TRACE(trace_os_emul, ("getprop - in - phandle=0x%lx(0x%lx`%s') name=`%s' buf=0x%lx buflen=%ld\n", | |
513 | (unsigned long)args.phandle, | |
514 | (unsigned long)phandle, | |
515 | (phandle == NULL ? "" : device_name(phandle)), | |
516 | name, | |
517 | (unsigned long)args.buf, | |
518 | (unsigned long)args.buflen)); | |
519 | /* get the property */ | |
520 | if (args.phandle == 0 | |
521 | || phandle == NULL) { | |
522 | args.size = -1; | |
523 | } | |
524 | else { | |
525 | const device_property *prop = device_find_property(phandle, name); | |
526 | if (prop == NULL) { | |
527 | args.size = -1; | |
528 | } | |
529 | else { | |
530 | int size = args.buflen; | |
531 | if (size > prop->sizeof_array) | |
532 | size = prop->sizeof_array; | |
533 | emul_write_buffer(prop->array, args.buf, | |
534 | size, | |
535 | processor, cia); | |
536 | args.size = size; | |
537 | switch (prop->type) { | |
538 | case string_property: | |
539 | TRACE(trace_os_emul, ("getprop - string `%s'\n", | |
540 | device_find_string_property(phandle, name))); | |
541 | break; | |
542 | case ihandle_property: | |
543 | TRACE(trace_os_emul, ("getprop - ihandle=0x%lx(0x%lx`%s')\n", | |
544 | BE2H_cell(*(unsigned_cell*)prop->array), | |
545 | (unsigned long)device_find_ihandle_property(phandle, name), | |
546 | ihandle_name(device_find_ihandle_property(phandle, name)))); | |
547 | break; | |
548 | default: | |
549 | break; | |
550 | } | |
551 | } | |
552 | } | |
553 | /* write back the result */ | |
554 | if (data->n_returns == 0) | |
555 | TRACE(trace_os_emul, ("getprop - out - size=%ld (not returned)\n", | |
556 | (unsigned long)args.size)); | |
557 | else { | |
558 | TRACE(trace_os_emul, ("getprop - out - size=%ld\n", | |
559 | (unsigned long)args.size)); | |
560 | chirp_write_h2t_args(&args, | |
561 | sizeof(args), | |
562 | data, | |
563 | processor, cia); | |
564 | } | |
565 | return 0; | |
566 | } | |
567 | ||
568 | static int | |
569 | chirp_emul_nextprop(os_emul_data *data, | |
570 | cpu *processor, | |
571 | unsigned_word cia) | |
572 | { | |
573 | struct nextprop_args { | |
574 | /*in*/ | |
575 | unsigned_cell phandle; | |
576 | unsigned_cell previous; | |
577 | unsigned_cell buf; | |
578 | /*out*/ | |
579 | unsigned_cell flag; | |
580 | } args; | |
581 | char previous[32]; | |
582 | device *phandle; | |
583 | /* read in the args */ | |
584 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
585 | return -1; | |
586 | phandle = external_to_device(data->root, args.phandle); | |
911b2333 AC |
587 | if (args.previous != 0) |
588 | emul_read_string(previous, | |
589 | args.previous, | |
590 | sizeof(previous), | |
591 | processor, cia); | |
592 | else | |
593 | /* If previous is NULL, make it look like the empty string. The | |
594 | next property after the empty string is the first property. */ | |
595 | strcpy (previous, ""); | |
c906108c SS |
596 | TRACE(trace_os_emul, ("nextprop - in - phandle=0x%lx(0x%lx`%s') previous=`%s' buf=0x%lx\n", |
597 | (unsigned long)args.phandle, | |
598 | (unsigned long)phandle, | |
599 | (phandle == NULL ? "" : device_name(phandle)), | |
600 | previous, | |
601 | (unsigned long)args.buf)); | |
602 | /* find the next property */ | |
603 | if (args.phandle == 0 | |
604 | || phandle == NULL) { | |
605 | args.flag = -1; | |
606 | } | |
607 | else { | |
608 | const device_property *prev_prop = device_find_property(phandle, previous); | |
609 | if (prev_prop == NULL) { | |
911b2333 AC |
610 | if (strcmp (previous, "") == 0) |
611 | args.flag = 0; /* No properties */ | |
612 | else | |
613 | args.flag = -1; /* name invalid */ | |
c906108c SS |
614 | } |
615 | else { | |
616 | const device_property *next_prop; | |
911b2333 AC |
617 | if (strcmp (previous, "") == 0) { |
618 | next_prop = prev_prop; /* The first property. */ | |
619 | } | |
620 | else { | |
621 | next_prop = device_next_property(prev_prop); | |
622 | } | |
c906108c SS |
623 | if (next_prop == NULL) { |
624 | args.flag = 0; /* last property */ | |
625 | } | |
626 | else { | |
627 | emul_write_buffer(next_prop->name, args.buf, strlen(next_prop->name), | |
628 | processor, cia); | |
629 | TRACE(trace_os_emul, ("nextprop - name=`%s'\n", next_prop->name)); | |
630 | args.flag = 1; /* worked ok */ | |
631 | } | |
632 | } | |
633 | } | |
634 | /* write back the result */ | |
635 | TRACE(trace_os_emul, ("nextprop - out - flag=%ld\n", | |
636 | (unsigned long)args.flag)); | |
637 | chirp_write_h2t_args(&args, | |
638 | sizeof(args), | |
639 | data, | |
640 | processor, cia); | |
641 | return 0; | |
642 | } | |
643 | ||
644 | #if 0 | |
645 | static int | |
646 | chirp_emul_setprop(os_emul_data *data, | |
647 | cpu *processor, | |
648 | unsigned_word cia) | |
649 | { | |
650 | error("chirp: setprop method not implemented\n"); | |
651 | return 0; | |
652 | } | |
653 | #endif | |
654 | ||
655 | static int | |
656 | chirp_emul_canon(os_emul_data *data, | |
657 | cpu *processor, | |
658 | unsigned_word cia) | |
659 | { | |
660 | struct canon_args { | |
661 | /*in*/ | |
662 | unsigned_cell device_specifier; | |
663 | unsigned_cell buf; | |
664 | unsigned_cell buflen; | |
665 | /*out*/ | |
666 | unsigned_cell length; | |
667 | } args; | |
668 | char device_specifier[1024]; | |
669 | device *phandle; | |
670 | const char *path; | |
671 | int length; | |
672 | /* read in the args */ | |
673 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
674 | return -1; | |
675 | emul_read_string(device_specifier, | |
676 | args.device_specifier, | |
677 | sizeof(device_specifier), | |
678 | processor, cia); | |
679 | TRACE(trace_os_emul, ("canon - in - device_specifier=`%s' buf=0x%lx buflen=%lx\n", | |
680 | device_specifier, | |
681 | (unsigned long)args.buf, | |
682 | (unsigned long)args.buflen)); | |
683 | /* canon the name */ | |
684 | phandle = tree_find_device(data->root, device_specifier); | |
685 | if (phandle == NULL) { | |
686 | length = -1; | |
687 | path = ""; | |
688 | args.length = -1; | |
689 | } | |
690 | else { | |
691 | path = device_path(phandle); | |
692 | length = strlen(path); | |
693 | if (length >= args.buflen) | |
694 | length = args.buflen - 1; | |
695 | emul_write_buffer(path, args.buf, length, | |
696 | processor, cia); | |
697 | args.length = length; | |
698 | } | |
699 | /* write back the result */ | |
700 | TRACE(trace_os_emul, ("canon - out - length=%ld buf=`%s'\n", | |
701 | (unsigned long)args.length, | |
702 | path)); | |
703 | chirp_write_h2t_args(&args, | |
704 | sizeof(args), | |
705 | data, | |
706 | processor, cia); | |
707 | return 0; | |
708 | } | |
709 | ||
710 | static int | |
711 | chirp_emul_finddevice(os_emul_data *data, | |
712 | cpu *processor, | |
713 | unsigned_word cia) | |
714 | { | |
715 | struct finddevice_args { | |
716 | /*in*/ | |
717 | unsigned_cell device_specifier; | |
718 | /*out*/ | |
719 | unsigned_cell phandle; | |
720 | } args; | |
721 | char device_specifier[1024]; | |
722 | device *phandle; | |
723 | /* get the args */ | |
724 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
725 | return -1; | |
726 | emul_read_string(device_specifier, | |
727 | args.device_specifier, | |
728 | sizeof(device_specifier), | |
729 | processor, cia); | |
730 | TRACE(trace_os_emul, ("finddevice - in - device_specifier=`%s'\n", | |
731 | device_specifier)); | |
732 | /* find the device */ | |
733 | phandle = tree_find_device(data->root, device_specifier); | |
734 | if (phandle == NULL) | |
735 | args.phandle = -1; | |
736 | else | |
737 | args.phandle = device_to_external(phandle); | |
738 | /* return its phandle */ | |
739 | TRACE(trace_os_emul, ("finddevice - out - phandle=0x%lx(0x%lx`%s')\n", | |
740 | (unsigned long)args.phandle, | |
741 | (unsigned long)phandle, | |
742 | (phandle == NULL ? "" : device_name(phandle)))); | |
743 | chirp_write_h2t_args(&args, | |
744 | sizeof(args), | |
745 | data, | |
746 | processor, cia); | |
747 | return 0; | |
748 | } | |
749 | ||
750 | static int | |
751 | chirp_emul_instance_to_path(os_emul_data *data, | |
752 | cpu *processor, | |
753 | unsigned_word cia) | |
754 | { | |
755 | struct instance_to_path_args { | |
756 | /*in*/ | |
757 | unsigned_cell ihandle; | |
758 | unsigned_cell buf; | |
759 | unsigned_cell buflen; | |
760 | /*out*/ | |
761 | unsigned_cell length; | |
762 | } args; | |
763 | device_instance *ihandle; | |
764 | const char *path; | |
765 | int length; | |
766 | /* get the args */ | |
767 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
768 | return -1; | |
769 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
770 | TRACE(trace_os_emul, ("instance-to-path - in - ihandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n", | |
771 | (unsigned long)args.ihandle, | |
772 | (unsigned long)ihandle, | |
773 | ihandle_name(ihandle), | |
774 | (unsigned long)args.buf, | |
775 | (unsigned long)args.buflen)); | |
776 | /* get the devices name */ | |
777 | if (ihandle == NULL) { | |
778 | args.length = -1; | |
779 | path = "(null)"; | |
780 | } | |
781 | else { | |
782 | path = device_instance_path(ihandle); | |
783 | length = strlen(path); | |
784 | if (length >= args.buflen) | |
785 | length = args.buflen - 1; | |
786 | emul_write_buffer(path, args.buf, length, | |
787 | processor, cia); | |
788 | args.length = length; | |
789 | } | |
790 | /* return its phandle */ | |
791 | TRACE(trace_os_emul, ("instance-to-path - out - length=%ld buf=`%s')\n", | |
792 | (unsigned long)args.length, | |
793 | path)); | |
794 | chirp_write_h2t_args(&args, | |
795 | sizeof(args), | |
796 | data, | |
797 | processor, cia); | |
798 | return 0; | |
799 | } | |
800 | ||
801 | static int | |
802 | chirp_emul_package_to_path(os_emul_data *data, | |
803 | cpu *processor, | |
804 | unsigned_word cia) | |
805 | { | |
806 | struct package_to_path_args { | |
807 | /*in*/ | |
808 | unsigned_cell phandle; | |
809 | unsigned_cell buf; | |
810 | unsigned_cell buflen; | |
811 | /*out*/ | |
812 | unsigned_cell length; | |
813 | } args; | |
814 | device *phandle; | |
815 | const char *path; | |
816 | /* get the args */ | |
817 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
818 | return -1; | |
819 | phandle = external_to_device(data->root, args.phandle); | |
820 | TRACE(trace_os_emul, ("package-to-path - in - phandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n", | |
821 | (unsigned long)args.phandle, | |
822 | (unsigned long)phandle, | |
823 | (phandle == NULL ? "" : device_name(phandle)), | |
824 | (unsigned long)args.buf, | |
825 | (unsigned long)args.buflen)); | |
826 | /* get the devices name */ | |
827 | if (phandle == NULL) { | |
828 | args.length = -1; | |
829 | path = "(null)"; | |
830 | } | |
831 | else { | |
832 | int length; | |
833 | path = device_path(phandle); | |
834 | length = strlen(path); | |
835 | if (length >= args.buflen) | |
836 | length = args.buflen - 1; | |
837 | emul_write_buffer(path, args.buf, length, | |
838 | processor, cia); | |
839 | args.length = length; | |
840 | } | |
841 | /* return its phandle */ | |
842 | TRACE(trace_os_emul, ("package-to-path - out - length=%ld buf=`%s')\n", | |
843 | (unsigned long)args.length, | |
844 | path)); | |
845 | chirp_write_h2t_args(&args, | |
846 | sizeof(args), | |
847 | data, | |
848 | processor, cia); | |
849 | return 0; | |
850 | } | |
851 | ||
852 | static int | |
853 | chirp_emul_call_method(os_emul_data *data, | |
854 | cpu *processor, | |
855 | unsigned_word cia) | |
856 | { | |
857 | struct call_method_args { | |
858 | /*in*/ | |
859 | unsigned_cell method; | |
860 | unsigned_cell ihandle; | |
861 | /*in/out*/ | |
862 | unsigned_cell stack[13]; /*6in + 6out + catch */ | |
863 | } args; | |
864 | char method[32]; | |
865 | device_instance *ihandle; | |
866 | /* some useful info about our mini stack */ | |
867 | int n_stack_args; | |
868 | int n_stack_returns; | |
869 | int stack_catch_result; | |
870 | int stack_returns; | |
871 | /* read the args */ | |
872 | if (chirp_read_t2h_args(&args, sizeof(args), -1, -1, data, processor, cia)) | |
873 | return -1; | |
874 | emul_read_string(method, | |
875 | args.method, | |
876 | sizeof(method), | |
877 | processor, cia); | |
878 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
879 | n_stack_args = data->n_args - 2; | |
880 | n_stack_returns = data->n_returns - 1; | |
881 | stack_catch_result = n_stack_args; | |
882 | stack_returns = stack_catch_result + 1; | |
883 | TRACE(trace_os_emul, ("call-method - in - n_args=%ld n_returns=%ld method=`%s' ihandle=0x%lx(0x%lx`%s')\n", | |
884 | (unsigned long)data->n_args, | |
885 | (unsigned long)data->n_returns, | |
886 | method, | |
887 | (unsigned long)args.ihandle, | |
888 | (unsigned long)ihandle, | |
889 | ihandle_name(ihandle))); | |
890 | /* see if we can emulate this method */ | |
891 | if (ihandle == NULL) { | |
892 | /* OpenFirmware doesn't define this error */ | |
893 | error("chirp: invalid ihandle passed to call-method method"); | |
894 | } | |
895 | else { | |
896 | args.stack[stack_catch_result] = | |
897 | device_instance_call_method(ihandle, | |
898 | method, | |
899 | n_stack_args, | |
900 | &args.stack[0], | |
901 | n_stack_returns, | |
902 | &args.stack[stack_returns]); | |
903 | } | |
904 | /* finished */ | |
905 | TRACE(trace_os_emul, ("call-method - out - catch-result=%ld\n", | |
906 | (unsigned long)args.stack[stack_catch_result])); | |
907 | chirp_write_h2t_args(&args, | |
908 | sizeof(args), | |
909 | data, | |
910 | processor, cia); | |
911 | return 0; | |
912 | } | |
913 | ||
914 | ||
915 | /* Device I/O */ | |
916 | ||
917 | static int | |
918 | chirp_emul_open(os_emul_data *data, | |
919 | cpu *processor, | |
920 | unsigned_word cia) | |
921 | { | |
922 | struct open_args { | |
923 | /*in*/ | |
924 | unsigned_cell device_specifier; | |
925 | /*out*/ | |
926 | unsigned_cell ihandle; | |
927 | } args; | |
928 | char device_specifier[1024]; | |
929 | device_instance *ihandle; | |
930 | /* read the args */ | |
931 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
932 | return -1; | |
933 | emul_read_string(device_specifier, | |
934 | args.device_specifier, | |
935 | sizeof(device_specifier), | |
936 | processor, cia); | |
937 | TRACE(trace_os_emul, ("open - in - device_specifier=`%s'\n", | |
938 | device_specifier)); | |
939 | /* open the device */ | |
940 | ihandle = tree_instance(data->root, device_specifier); | |
941 | if (ihandle == NULL) | |
942 | args.ihandle = -1; | |
943 | else | |
944 | args.ihandle = device_instance_to_external(ihandle); | |
945 | /* return the ihandle result */ | |
946 | TRACE(trace_os_emul, ("open - out - ihandle=0x%lx(0x%lx`%s')\n", | |
947 | (unsigned long)args.ihandle, | |
948 | (unsigned long)ihandle, | |
949 | ihandle_name(ihandle))); | |
950 | chirp_write_h2t_args(&args, | |
951 | sizeof(args), | |
952 | data, | |
953 | processor, cia); | |
954 | return 0; | |
955 | } | |
956 | ||
957 | static int | |
958 | chirp_emul_close(os_emul_data *data, | |
959 | cpu *processor, | |
960 | unsigned_word cia) | |
961 | { | |
962 | struct close_args { | |
963 | /*in*/ | |
964 | unsigned_cell ihandle; | |
965 | /*out*/ | |
966 | } args; | |
967 | device_instance *ihandle; | |
968 | /* read the args */ | |
969 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 0, data, processor, cia)) | |
970 | return -1; | |
971 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
972 | TRACE(trace_os_emul, ("close - in - ihandle=0x%lx(0x%lx`%s')\n", | |
973 | (unsigned long)args.ihandle, | |
974 | (unsigned long)ihandle, | |
975 | ihandle_name(ihandle))); | |
976 | /* close the device */ | |
977 | if (ihandle == NULL) { | |
978 | /* OpenFirmware doesn't define this error */ | |
979 | error("chirp: invalid ihandle passed to close method"); | |
980 | } | |
981 | else { | |
982 | device_instance_delete(ihandle); | |
983 | } | |
984 | /* return the ihandle result */ | |
985 | TRACE(trace_os_emul, ("close - out\n")); | |
986 | chirp_write_h2t_args(&args, | |
987 | sizeof(args), | |
988 | data, | |
989 | processor, cia); | |
990 | return 0; | |
991 | } | |
992 | ||
993 | static int | |
994 | chirp_emul_read(os_emul_data *data, | |
995 | cpu *processor, | |
996 | unsigned_word cia) | |
997 | { | |
998 | struct read_args { | |
999 | /*in*/ | |
1000 | unsigned_cell ihandle; | |
1001 | unsigned_cell addr; | |
1002 | unsigned_cell len; | |
1003 | /*out*/ | |
1004 | unsigned_cell actual; | |
1005 | } args; | |
1006 | char buf[1024]; | |
1007 | device_instance *ihandle; | |
1008 | /* read the args */ | |
1009 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
1010 | return -1; | |
1011 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
1012 | TRACE(trace_os_emul, ("read - in - ihandle=0x%lx(0x%lx`%s') addr=0x%lx len=%ld\n", | |
1013 | (unsigned long)args.ihandle, | |
1014 | (unsigned long)ihandle, | |
1015 | ihandle_name(ihandle), | |
1016 | (unsigned long)args.addr, | |
1017 | (unsigned long)args.len)); | |
1018 | if (ihandle == NULL) { | |
1019 | /* OpenFirmware doesn't define this error */ | |
1020 | error("chirp: invalid ihandle passed to read method"); | |
1021 | } | |
1022 | else { | |
1023 | /* do the reads */ | |
1024 | int actual = 0; | |
1025 | while (actual < args.len) { | |
1026 | int remaining = args.len - actual; | |
1027 | int to_read = (remaining <= sizeof(buf) ? remaining : sizeof(buf)); | |
1028 | int nr_read = device_instance_read(ihandle, buf, to_read); | |
1029 | if (nr_read < 0) { | |
1030 | actual = nr_read; /* the error */ | |
1031 | break; | |
1032 | } | |
1033 | else if (nr_read == 0) { | |
1034 | break; | |
1035 | } | |
1036 | emul_write_buffer(buf, | |
1037 | args.addr + actual, | |
1038 | nr_read, | |
1039 | processor, cia); | |
1040 | actual += nr_read; | |
1041 | } | |
1042 | if (actual >= 0) { | |
1043 | args.actual = actual; | |
1044 | if (actual < sizeof(buf)) | |
1045 | buf[actual] = '\0'; | |
1046 | else | |
1047 | buf[sizeof(buf) - 1] = '\0'; | |
1048 | } | |
1049 | else { | |
1050 | switch (actual) { | |
1051 | case sim_io_eof: | |
1052 | args.actual = 0; | |
1053 | break; | |
1054 | case sim_io_not_ready: | |
1055 | ASSERT(sim_io_not_ready == -2); | |
1056 | args.actual = sim_io_not_ready; | |
1057 | break; | |
1058 | default: | |
1059 | error("Bad error value %ld", (long)actual); | |
1060 | break; | |
1061 | } | |
1062 | } | |
1063 | } | |
1064 | /* return the result */ | |
1065 | TRACE(trace_os_emul, ("read - out - actual=%ld `%s'\n", | |
1066 | (long)args.actual, | |
1067 | ((args.actual > 0 && args.actual < sizeof(buf)) ? buf : "") | |
1068 | )); | |
1069 | chirp_write_h2t_args(&args, | |
1070 | sizeof(args), | |
1071 | data, | |
1072 | processor, cia); | |
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | static int | |
1077 | chirp_emul_write(os_emul_data *data, | |
1078 | cpu *processor, | |
1079 | unsigned_word cia) | |
1080 | { | |
1081 | struct write_args { | |
1082 | /*in*/ | |
1083 | unsigned_cell ihandle; | |
1084 | unsigned_cell addr; | |
1085 | unsigned_cell len; | |
1086 | /*out*/ | |
1087 | unsigned_cell actual; | |
1088 | } args; | |
1089 | char buf[1024]; | |
1090 | device_instance *ihandle; | |
1091 | int actual; | |
1092 | /* get the args */ | |
1093 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
1094 | return -1; | |
1095 | actual = args.len; | |
1096 | if (actual >= sizeof(buf)) | |
1097 | actual = sizeof(buf) - 1; | |
1098 | emul_read_buffer(buf, | |
1099 | args.addr, | |
1100 | actual, | |
1101 | processor, cia); | |
1102 | buf[actual] = '\0'; | |
1103 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
1104 | TRACE(trace_os_emul, ("write - in - ihandle=0x%lx(0x%lx`%s') `%s' (%ld)\n", | |
1105 | (unsigned long)args.ihandle, | |
1106 | (unsigned long)ihandle, | |
1107 | ihandle_name(ihandle), | |
1108 | buf, (long)actual)); | |
1109 | if (ihandle == NULL) { | |
1110 | /* OpenFirmware doesn't define this error */ | |
1111 | error("chirp: invalid ihandle passed to write method"); | |
1112 | } | |
1113 | else { | |
1114 | /* write it out */ | |
1115 | actual = device_instance_write(ihandle, buf, actual); | |
1116 | if (actual < 0) | |
1117 | args.actual = 0; | |
1118 | else | |
1119 | args.actual = actual; | |
1120 | } | |
1121 | /* return the result */ | |
1122 | TRACE(trace_os_emul, ("write - out - actual=%ld\n", | |
1123 | (long)args.actual)); | |
1124 | chirp_write_h2t_args(&args, | |
1125 | sizeof(args), | |
1126 | data, | |
1127 | processor, cia); | |
1128 | return 0; | |
1129 | } | |
1130 | ||
1131 | static int | |
1132 | chirp_emul_seek(os_emul_data *data, | |
1133 | cpu *processor, | |
1134 | unsigned_word cia) | |
1135 | { | |
1136 | struct seek_args { | |
1137 | /*in*/ | |
1138 | unsigned_cell ihandle; | |
1139 | unsigned_cell pos_hi; | |
1140 | unsigned_cell pos_lo; | |
1141 | /*out*/ | |
1142 | unsigned_cell status; | |
1143 | } args; | |
1144 | int status; | |
1145 | device_instance *ihandle; | |
1146 | /* get the args */ | |
1147 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
1148 | return -1; | |
1149 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
1150 | TRACE(trace_os_emul, ("seek - in - ihandle=0x%lx(0x%lx`%s') pos.hi=0x%lx pos.lo=0x%lx\n", | |
1151 | (unsigned long)args.ihandle, | |
1152 | (unsigned long)ihandle, | |
1153 | ihandle_name(ihandle), | |
1154 | args.pos_hi, args.pos_lo)); | |
1155 | if (ihandle == NULL) { | |
1156 | /* OpenFirmware doesn't define this error */ | |
1157 | error("chirp: invalid ihandle passed to seek method"); | |
1158 | } | |
1159 | else { | |
1160 | /* seek it out */ | |
1161 | status = device_instance_seek(ihandle, args.pos_hi, args.pos_lo); | |
1162 | args.status = status; | |
1163 | } | |
1164 | /* return the result */ | |
1165 | TRACE(trace_os_emul, ("seek - out - status=%ld\n", | |
1166 | (long)args.status)); | |
1167 | chirp_write_h2t_args(&args, | |
1168 | sizeof(args), | |
1169 | data, | |
1170 | processor, cia); | |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | ||
1175 | /* memory */ | |
1176 | ||
1177 | static int | |
1178 | chirp_emul_claim(os_emul_data *data, | |
1179 | cpu *processor, | |
1180 | unsigned_word cia) | |
1181 | { | |
1182 | /* NOTE: the client interface claim routine is *very* different to | |
1183 | the "claim" method described in IEEE-1275 appendix A. The latter | |
1184 | uses real addresses while this uses virtual (effective) | |
1185 | addresses. */ | |
1186 | struct claim_args { | |
1187 | /* in */ | |
1188 | unsigned_cell virt; | |
1189 | unsigned_cell size; | |
1190 | unsigned_cell align; | |
1191 | /* out */ | |
1192 | unsigned_cell baseaddr; | |
1193 | } args; | |
1194 | /* read the args */ | |
1195 | if (chirp_read_t2h_args(&args, sizeof(args), | |
1196 | 3 /*n_args*/, 1 /*n_returns*/, | |
1197 | data, processor, cia)) | |
1198 | return -1; | |
1199 | TRACE(trace_os_emul, ("claim - in - virt=0x%lx size=%ld align=%d\n", | |
1200 | (unsigned long)args.virt, | |
1201 | (long int)args.size, | |
1202 | (int)args.align)); | |
1203 | /* use the memory device to allocate (real) memory at the requested | |
1204 | address */ | |
1205 | { | |
1206 | device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory"); | |
1207 | unsigned_cell mem_in[3]; | |
1208 | unsigned_cell mem_out[1]; | |
1209 | mem_in[0] = args.align; /*top-of-stack*/ | |
1210 | mem_in[1] = args.size; | |
1211 | mem_in[2] = args.virt; | |
1212 | if (device_instance_call_method(memory, "claim", | |
1213 | 3, mem_in, 1, mem_out) < 0) | |
1214 | error("chirp: claim failed to allocate memory virt=0x%lx size=%ld align=%d", | |
1215 | (unsigned long)args.virt, | |
1216 | (long int)args.size, | |
1217 | (int)args.align); | |
1218 | args.baseaddr = mem_out[0]; | |
1219 | } | |
1220 | /* if using virtual addresses, create a 1-1 map of this address space */ | |
1221 | if (!data->real_mode) { | |
1222 | error("chirp: claim method does not support virtual mode"); | |
1223 | } | |
1224 | /* return the base address */ | |
1225 | TRACE(trace_os_emul, ("claim - out - baseaddr=0x%lx\n", | |
1226 | (unsigned long)args.baseaddr)); | |
1227 | chirp_write_h2t_args(&args, | |
1228 | sizeof(args), | |
1229 | data, | |
1230 | processor, cia); | |
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | static int | |
1235 | chirp_emul_release(os_emul_data *data, | |
1236 | cpu *processor, | |
1237 | unsigned_word cia) | |
1238 | { | |
1239 | /* NOTE: the client interface release routine is *very* different to | |
1240 | the "claim" method described in IEEE-1275 appendix A. The latter | |
1241 | uses real addresses while this uses virtual (effective) | |
1242 | addresses. */ | |
1243 | struct claim_args { | |
1244 | /* in */ | |
1245 | unsigned_cell virt; | |
1246 | unsigned_cell size; | |
1247 | /* out */ | |
1248 | } args; | |
1249 | /* read the args */ | |
1250 | if (chirp_read_t2h_args(&args, sizeof(args), | |
1251 | 2 /*n_args*/, 0 /*n_returns*/, | |
1252 | data, processor, cia)) | |
1253 | return -1; | |
1254 | TRACE(trace_os_emul, ("release - in - virt=0x%lx size=%ld\n", | |
1255 | (unsigned long)args.virt, | |
1256 | (long int)args.size)); | |
1257 | /* use the memory device to release (real) memory at the requested | |
1258 | address */ | |
1259 | { | |
1260 | device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory"); | |
1261 | unsigned_cell mem_in[2]; | |
1262 | mem_in[0] = args.size; | |
1263 | mem_in[1] = args.virt; | |
1264 | if (device_instance_call_method(memory, "release", | |
1265 | 2, mem_in, 0, NULL) < 0) | |
1266 | error("chirp: claim failed to release memory virt=0x%lx size=%ld", | |
1267 | (unsigned long)args.virt, | |
1268 | (long int)args.size); | |
1269 | } | |
1270 | /* if using virtual addresses, remove the 1-1 map of this address space */ | |
1271 | if (!data->real_mode) { | |
1272 | error("chirp: release method does not support virtual mode"); | |
1273 | } | |
1274 | /* return the base address */ | |
1275 | TRACE(trace_os_emul, ("release - out\n")); | |
1276 | chirp_write_h2t_args(&args, | |
1277 | sizeof(args), | |
1278 | data, | |
1279 | processor, cia); | |
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | ||
1284 | /* Control transfer */ | |
1285 | ||
1286 | static int | |
1287 | chirp_emul_boot(os_emul_data *data, | |
1288 | cpu *processor, | |
1289 | unsigned_word cia) | |
1290 | { | |
1291 | /* unlike OpenFirmware this one can take an argument */ | |
1292 | struct boot_args { | |
1293 | /*in*/ | |
1294 | unsigned_cell bootspec; | |
1295 | /*out*/ | |
1296 | } args; | |
1297 | char bootspec[1024]; | |
1298 | /* read in the arguments */ | |
1299 | if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia)) | |
1300 | cpu_halt(processor, cia, was_exited, -1); | |
1301 | if (args.bootspec != 0) | |
1302 | emul_read_string(bootspec, args.bootspec, sizeof(bootspec), | |
1303 | processor, cia); | |
1304 | else | |
1305 | strcpy(bootspec, "(null)"); | |
1306 | TRACE(trace_os_emul, ("boot - in bootspec=`%s'\n", bootspec)); | |
1307 | /* just report this and exit */ | |
1308 | printf_filtered("chrp: boot %s called, exiting.\n", bootspec); | |
1309 | cpu_halt(processor, cia, was_exited, 0); | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | static int | |
1314 | chirp_emul_enter(os_emul_data *data, | |
1315 | cpu *processor, | |
1316 | unsigned_word cia) | |
1317 | { | |
1318 | error("chirp: enter method not implemented\n"); | |
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | static int | |
1323 | chirp_emul_exit(os_emul_data *data, | |
1324 | cpu *processor, | |
1325 | unsigned_word cia) | |
1326 | { | |
1327 | /* unlike OpenBoot this one can take an argument */ | |
1328 | struct exit_args { | |
1329 | /*in*/ | |
1330 | signed_cell status; | |
1331 | /*out*/ | |
1332 | } args; | |
1333 | if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia)) | |
1334 | cpu_halt(processor, cia, was_exited, -1); | |
1335 | cpu_halt(processor, cia, was_exited, args.status); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | static int | |
1340 | chirp_emul_chain(os_emul_data *data, | |
1341 | cpu *processor, | |
1342 | unsigned_word cia) | |
1343 | { | |
1344 | error("chirp: chain method not implemented\n"); | |
1345 | return 0; | |
1346 | } | |
1347 | ||
1348 | ||
1349 | /* user interface */ | |
1350 | ||
1351 | static int | |
1352 | chirp_emul_interpret(os_emul_data *data, | |
1353 | cpu *processor, | |
1354 | unsigned_word cia) | |
1355 | { | |
1356 | error("chirp: interpret method not implemented\n"); | |
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | static int | |
1361 | chirp_emul_set_callback(os_emul_data *data, | |
1362 | cpu *processor, | |
1363 | unsigned_word cia) | |
1364 | { | |
1365 | error("chirp: set_callback method not implemented\n"); | |
1366 | return 0; | |
1367 | } | |
1368 | ||
1369 | static int | |
1370 | chirp_emul_set_symbol_lookup(os_emul_data *data, | |
1371 | cpu *processor, | |
1372 | unsigned_word cia) | |
1373 | { | |
1374 | error("chirp: set_symbol_lookup method not implemented\n"); | |
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | ||
1379 | /* Time */ | |
1380 | ||
1381 | static int | |
1382 | chirp_emul_milliseconds(os_emul_data *data, | |
1383 | cpu *processor, | |
1384 | unsigned_word cia) | |
1385 | { | |
1386 | struct test_args { | |
1387 | /*in*/ | |
1388 | /*out*/ | |
1389 | unsigned_cell ms; | |
1390 | } args; | |
1391 | unsigned64 time; | |
1392 | /* read in the arguments */ | |
1393 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
1394 | return -1; | |
1395 | /* make up a number */ | |
1396 | time = event_queue_time(psim_event_queue(cpu_system(processor))) / 1000000; | |
1397 | args.ms = time; | |
1398 | /* write the arguments back out */ | |
1399 | TRACE(trace_os_emul, ("milliseconds - out - ms=%ld\n", | |
1400 | (unsigned long)args.ms)); | |
1401 | chirp_write_h2t_args(&args, | |
1402 | sizeof(args), | |
1403 | data, | |
1404 | processor, cia); | |
1405 | return 0; | |
1406 | } | |
1407 | ||
1408 | ||
1409 | ||
1410 | ||
1411 | static chirp_services services[] = { | |
1412 | ||
1413 | /* client interface */ | |
1414 | { "test", chirp_emul_test }, | |
1415 | ||
1416 | /* device tree */ | |
1417 | { "peer", chirp_emul_peer }, | |
1418 | { "child", chirp_emul_child }, | |
1419 | { "parent", chirp_emul_parent }, | |
1420 | { "instance-to-package", chirp_emul_instance_to_package }, | |
1421 | { "getproplen", chirp_emul_getproplen }, | |
1422 | { "getprop", chirp_emul_getprop }, | |
1423 | { "nextprop", chirp_emul_nextprop }, | |
1424 | /* { "setprop", chirp_emul_setprop }, */ | |
1425 | { "canon", chirp_emul_canon }, | |
1426 | { "finddevice", chirp_emul_finddevice }, | |
1427 | { "instance-to-path", chirp_emul_instance_to_path }, | |
1428 | { "package-to-path", chirp_emul_package_to_path }, | |
1429 | { "call-method", chirp_emul_call_method }, | |
1430 | ||
1431 | /* device I/O */ | |
1432 | { "open", chirp_emul_open }, | |
1433 | { "close", chirp_emul_close }, | |
1434 | { "read", chirp_emul_read }, | |
1435 | { "write", chirp_emul_write }, | |
1436 | { "seek", chirp_emul_seek }, | |
1437 | { "write", chirp_emul_write }, | |
1438 | ||
1439 | /* memory */ | |
1440 | { "claim", chirp_emul_claim }, | |
1441 | { "release", chirp_emul_release }, | |
1442 | ||
1443 | /* control transfer */ | |
1444 | { "boot", chirp_emul_boot }, | |
1445 | { "enter", chirp_emul_enter }, | |
1446 | { "exit", chirp_emul_exit }, | |
1447 | { "chain", chirp_emul_chain }, | |
1448 | ||
1449 | /* user interface */ | |
1450 | { "interpret", chirp_emul_interpret }, | |
1451 | { "set_callback", chirp_emul_set_callback }, | |
1452 | { "set_symbol_lookup", chirp_emul_set_symbol_lookup }, | |
1453 | ||
1454 | /* time */ | |
1455 | { "milliseconds", chirp_emul_milliseconds }, | |
1456 | ||
1457 | { 0, /* sentinal */ }, | |
1458 | }; | |
1459 | ||
1460 | ||
1461 | /* main handlers */ | |
1462 | ||
1463 | /* Any starting address greater than this is assumed to be an Chirp | |
1464 | rather than VEA */ | |
1465 | ||
1466 | #ifndef CHIRP_START_ADDRESS | |
1467 | #define CHIRP_START_ADDRESS 0x80000000 | |
1468 | #endif | |
1469 | #ifndef CHIRP_LOAD_BASE | |
1470 | #define CHIRP_LOAD_BASE -1 | |
1471 | #endif | |
1472 | ||
1473 | ||
1474 | typedef struct _chirp_note_desc { | |
1475 | signed32 real_mode; | |
1476 | signed32 real_base; | |
1477 | signed32 real_size; | |
1478 | signed32 virt_base; | |
1479 | signed32 virt_size; | |
1480 | signed32 load_base; | |
1481 | } chirp_note_desc; | |
1482 | ||
1483 | typedef enum { | |
1484 | note_missing, | |
1485 | note_found, | |
1486 | note_correct, | |
1487 | } note_found_status; | |
1488 | typedef struct _chirp_note { | |
1489 | chirp_note_desc desc; | |
1490 | note_found_status found; | |
1491 | } chirp_note; | |
1492 | ||
1493 | typedef struct _chirp_note_head { | |
1494 | unsigned32 namesz; | |
1495 | unsigned32 descsz; | |
1496 | unsigned32 type; | |
1497 | } chirp_note_head; | |
1498 | ||
1499 | static void | |
1500 | map_over_chirp_note(bfd *image, | |
1501 | asection *sect, | |
1502 | PTR obj) | |
1503 | { | |
1504 | chirp_note *note = (chirp_note*)obj; | |
1505 | if (strcmp(sect->name, ".note") == 0) { | |
1506 | chirp_note_head head; | |
1507 | char name[16]; | |
1508 | /* check the head */ | |
1509 | if (!bfd_get_section_contents(image, sect, | |
1510 | &head, 0, sizeof(head))) | |
1511 | return; | |
1512 | head.namesz = bfd_get_32(image, (void*)&head.namesz); | |
1513 | head.descsz = bfd_get_32(image, (void*)&head.descsz); | |
1514 | head.type = bfd_get_32(image, (void*)&head.type); | |
1515 | if (head.type != 0x1275) | |
1516 | return; | |
1517 | /* check the name field */ | |
1518 | if (head.namesz > sizeof(name)) { | |
1519 | error("chirp: note name too long (%d > %d)\n", (int)head.namesz, sizeof(name)); | |
1520 | } | |
1521 | if (!bfd_get_section_contents(image, sect, | |
1522 | name, sizeof(head), head.namesz)) { | |
1523 | error("chirp: note name unreadable\n"); | |
1524 | } | |
1525 | if (strcmp(name, "PowerPC") != 0) { | |
1526 | printf_filtered("chirp: note name (%s) not `PowerPC'\n", name); | |
1527 | } | |
1528 | /* check the size */ | |
1529 | if (head.descsz == sizeof(note->desc) - sizeof(signed32)) { | |
1530 | sim_io_printf_filtered("chirp: note descriptor missing load-base\n"); | |
1531 | } | |
1532 | else if (head.descsz != sizeof(note->desc)) { | |
1533 | sim_io_printf_filtered("chirp: note descriptor of wrong size\n"); | |
1534 | note->found = note_found; | |
1535 | return; | |
1536 | } | |
1537 | note->found = note_correct; | |
1538 | /* get the contents */ | |
1539 | if (!bfd_get_section_contents(image, sect, | |
1540 | ¬e->desc, /* page align start */ | |
1541 | ((sizeof(head) + head.namesz) + 3) & ~3, | |
1542 | head.descsz)) { | |
1543 | error("chirp: note descriptor unreadable\n"); | |
1544 | } | |
1545 | note->desc.real_mode = bfd_get_32(image, (void*)¬e->desc.real_mode); | |
1546 | note->desc.real_base = bfd_get_32(image, (void*)¬e->desc.real_base); | |
1547 | note->desc.real_size = bfd_get_32(image, (void*)¬e->desc.real_size); | |
1548 | note->desc.virt_base = bfd_get_32(image, (void*)¬e->desc.virt_base); | |
1549 | note->desc.virt_size = bfd_get_32(image, (void*)¬e->desc.virt_size); | |
1550 | if (head.descsz == sizeof(note->desc)) | |
1551 | note->desc.load_base = bfd_get_32(image, (void*)¬e->desc.load_base); | |
1552 | else | |
560ba567 | 1553 | note->desc.load_base = (signed32)-1; |
c906108c SS |
1554 | } |
1555 | } | |
1556 | ||
1557 | ||
1558 | static os_emul_data * | |
1559 | emul_chirp_create(device *root, | |
1560 | bfd *image, | |
1561 | const char *name) | |
1562 | { | |
1563 | os_emul_data *chirp; | |
1564 | device *node; | |
1565 | chirp_note note; | |
1566 | int i; | |
1567 | ||
1568 | /* Sanity check that this really is the chosen emulation */ | |
1569 | if (name == NULL && image == NULL) | |
1570 | return NULL; | |
1571 | if (name != NULL | |
1572 | && strcmp(name, "ob") != 0 | |
1573 | && strcmp(name, "ieee1274") != 0 | |
1574 | && strcmp(name, "chrp") != 0 | |
1575 | && strcmp(name, "chirp") != 0 | |
1576 | && strcmp(name, "openboot") != 0) | |
1577 | return NULL; | |
1578 | ||
1579 | /* look for an elf note section, enter its values into the device tree */ | |
1580 | memset(¬e, 0, sizeof(note)); | |
1581 | if (image != NULL) | |
1582 | bfd_map_over_sections(image, map_over_chirp_note, ¬e); | |
1583 | if (name == NULL && image != NULL && note.found == note_missing) | |
1584 | return NULL; | |
1585 | ||
1586 | /* Assume that it is a chirp emulation */ | |
1587 | ||
1588 | chirp = ZALLOC(os_emul_data); | |
1589 | chirp->root = root; | |
1590 | chirp->services = services; | |
1591 | ||
1592 | /* the root node */ | |
1593 | tree_parse(root, "/name \"gpl,clayton"); | |
1594 | ||
1595 | /* default options */ | |
1596 | emul_add_tree_options(root, image, "chirp", "oea", | |
1597 | 0 /*oea-interrupt-prefix*/); | |
1598 | ||
1599 | /* hardware */ | |
1600 | emul_add_tree_hardware(root); | |
1601 | ||
1602 | /* basic information */ | |
1603 | chirp->memory_size | |
1604 | = tree_find_integer_property(root, "/openprom/options/oea-memory-size"); | |
1605 | chirp->little_endian | |
1606 | = tree_find_boolean_property(root, "/options/little-endian?"); | |
1607 | chirp->floating_point_available | |
1608 | = tree_find_boolean_property(root, "/openprom/options/floating-point?"); | |
1609 | chirp->interrupt_prefix = | |
1610 | tree_find_integer_property(root, "/openprom/options/oea-interrupt-prefix"); | |
1611 | ||
1612 | ||
1613 | /* Perform an interum layout of the openboot firmware in memory */ | |
1614 | ||
1615 | ||
1616 | /* a page for firmware calls */ | |
1617 | chirp->sizeof_code = 4096; | |
1618 | chirp->code_offset = 0x4000; /* possible space for interrupt table */ | |
1619 | ||
1620 | /* the stack */ | |
1621 | chirp->sizeof_stack = 32 * 1024; | |
1622 | chirp->stack_offset = chirp->code_offset + chirp->sizeof_code; | |
1623 | ||
1624 | /* the hash table */ | |
1625 | if (!note.desc.real_mode) { | |
1626 | chirp->nr_page_table_entry_groups = (chirp->memory_size < 0x800000 | |
1627 | ? 1024 /* min allowed */ | |
1628 | : (chirp->memory_size / 4096 / 2)); | |
1629 | chirp->sizeof_htab = chirp->nr_page_table_entry_groups * 64; | |
1630 | } | |
1631 | chirp->htab_offset = chirp->stack_offset + chirp->sizeof_stack; | |
1632 | ||
1633 | /* the actual amount of space needed */ | |
1634 | chirp->real_size = chirp->htab_offset + chirp->sizeof_htab; | |
1635 | ||
1636 | ||
1637 | /* now go through and see if it fits in what is available */ | |
1638 | ||
1639 | ||
1640 | /* resolve real-mode? */ | |
1641 | if (note.found == note_correct) | |
1642 | chirp->real_mode = note.desc.real_mode; | |
1643 | else if (tree_find_property(root, "/options/real-mode?") != NULL) | |
1644 | chirp->real_mode = tree_find_boolean_property(root, "/options/real-mode?"); | |
1645 | else | |
1646 | chirp->real_mode = 0; | |
1647 | if (tree_find_property(root, "/options/real-mode?") != NULL) { | |
1648 | if (!chirp->real_mode | |
1649 | != !tree_find_boolean_property(root, "/options/real-mode?")) | |
1650 | error("chirp: /options/real-mode? conflicts with note section\n"); | |
1651 | } | |
1652 | else | |
1653 | tree_parse(root, "/options/real-mode? %s", | |
1654 | chirp->real_mode ? "true" : "false"); | |
1655 | ||
1656 | /* resolve real-base */ | |
1657 | if (note.found == note_correct | |
1658 | && note.desc.real_base != (signed32)-1) | |
1659 | chirp->real_base = note.desc.real_base; | |
1660 | else if (tree_find_property(root, "/options/real-base") != NULL) | |
1661 | chirp->real_base = tree_find_integer_property(root, "/options/real-base"); | |
1662 | else | |
1663 | chirp->real_base = chirp->memory_size - chirp->real_size; | |
1664 | if (tree_find_property(root, "/options/real-base") != NULL) { | |
1665 | if (chirp->real_base != tree_find_integer_property(root, "/options/real-base")) | |
1666 | error("chirp: /options/real-base conflicts with note section\n"); | |
1667 | } | |
1668 | else | |
1669 | tree_parse(root, "/options/real-base 0x%lx", | |
1670 | (unsigned long)chirp->real_base); | |
1671 | ||
1672 | /* resolve real-size */ | |
1673 | if (note.found == note_correct | |
1674 | && note.desc.real_size != (signed32)-1 | |
1675 | && note.desc.real_size != 0 | |
1676 | && chirp->real_size > note.desc.real_size) | |
1677 | error("chirp: insufficient physical memory for firmware\n"); | |
1678 | if (tree_find_property(root, "/options/real-size") != NULL) { | |
1679 | if (chirp->real_size > tree_find_integer_property(root, "/options/real-size")) | |
1680 | error("chirp: /options/real-size conflicts with note section\n"); | |
1681 | } | |
1682 | else | |
1683 | tree_parse(root, "/options/real-size 0x%lx", | |
1684 | (unsigned long)chirp->real_size); | |
1685 | ||
1686 | /* resolve virt-base */ | |
1687 | if (chirp->real_mode) | |
1688 | chirp->virt_base = chirp->real_base; | |
1689 | else if (note.found == note_correct && note.desc.virt_base != -1) | |
1690 | chirp->virt_base = note.desc.virt_base; | |
1691 | else if (tree_find_property(root, "/options/virt-base") != NULL) | |
1692 | chirp->virt_base = tree_find_integer_property(root, "/options/virt-base"); | |
1693 | else | |
1694 | chirp->virt_base = CHIRP_START_ADDRESS; | |
1695 | if (tree_find_property(root, "/options/virt-base") != NULL) { | |
1696 | unsigned_word virt_base = tree_find_integer_property(root, "/options/virt-base"); | |
1697 | if (virt_base != -1 && chirp->virt_base != virt_base) | |
1698 | error("chirp: /options/virt-base conflicts with note section\n"); | |
1699 | } | |
1700 | else | |
1701 | tree_parse(root, "/options/virt-base 0x%lx", | |
1702 | chirp->real_mode ? -1 : (unsigned long)chirp->virt_base); | |
1703 | ||
1704 | /* resolve virt-size */ | |
1705 | chirp->virt_size = chirp->real_size; | |
1706 | if (note.found == note_correct | |
1707 | && note.desc.virt_size != (signed32)-1 | |
1708 | && note.desc.virt_size != 0 | |
1709 | && !chirp->real_mode | |
1710 | && chirp->virt_size > note.desc.virt_size) | |
1711 | error("chirp: insufficent virtual memory for firmware\n"); | |
1712 | if (tree_find_property(root, "/options/virt-size") != NULL) { | |
1713 | if (chirp->virt_size > tree_find_integer_property(root, "/options/virt-size")) | |
1714 | error("chirp: /options/virt-size conflicts with note section\n"); | |
1715 | } | |
1716 | else | |
1717 | tree_parse(root, "/options/virt-size 0x%lx", | |
1718 | chirp->real_mode ? -1 : (unsigned long)chirp->virt_size); | |
1719 | ||
1720 | /* resolve load-base */ | |
1721 | if (note.found == note_correct | |
1722 | && note.desc.load_base != (signed32)-1) | |
1723 | chirp->load_base = note.desc.load_base; | |
1724 | else if (tree_find_property(root, "/options/load-base") != NULL) | |
1725 | chirp->load_base = tree_find_integer_property(root, "/options/load-base"); | |
1726 | else | |
1727 | chirp->load_base = CHIRP_LOAD_BASE; | |
1728 | if (tree_find_property(root, "/options/load-base") != NULL) { | |
1729 | if (chirp->load_base != tree_find_integer_property(root, "/options/load-base")) | |
1730 | error("chirp: /options/load-base conflicts with note section\n"); | |
1731 | } | |
1732 | else | |
1733 | tree_parse(root, "/options/load-base 0x%lx", | |
1734 | (unsigned long)chirp->load_base); | |
1735 | ||
1736 | /* now adjust the preliminary firmware addresses to final values */ | |
1737 | chirp->code_ra = chirp->code_offset + chirp->real_base; | |
1738 | chirp->stack_ra = chirp->stack_offset + chirp->real_base; | |
1739 | chirp->htab_ra = chirp->htab_offset + chirp->real_base; | |
1740 | ||
1741 | /* the virtual addresses. In real mode these are real addresses. */ | |
1742 | ||
1743 | chirp->code_va = chirp->code_offset + chirp->virt_base; | |
1744 | chirp->stack_va = chirp->stack_offset + chirp->virt_base; | |
1745 | chirp->htab_va = chirp->htab_offset + chirp->virt_base; | |
1746 | ||
1747 | chirp->code_client_va = chirp->code_va; | |
1748 | chirp->code_client_ra = chirp->code_ra; | |
1749 | ||
1750 | chirp->code_callback_va = chirp->code_client_va + 16; | |
1751 | chirp->code_callback_ra = chirp->code_client_ra + 16; | |
1752 | ||
1753 | chirp->code_loop_va = chirp->code_callback_va + 16; | |
1754 | chirp->code_loop_ra = chirp->code_callback_ra + 16; | |
1755 | ||
1756 | /* initialization */ | |
1757 | ||
1758 | tree_parse(root, "/openprom/init"); | |
1759 | tree_parse(root, "/openprom/init/register"); | |
1760 | tree_parse(root, "/openprom/init/register/0.pc 0x%lx", | |
1761 | (unsigned long)bfd_get_start_address(image)); | |
1762 | tree_parse(root, "/openprom/init/register/pc 0x%lx", | |
1763 | (unsigned long)chirp->code_loop_va); | |
1764 | tree_parse(root, "/openprom/init/register/msr 0x%x", | |
1765 | (msr_machine_check_enable | |
1766 | | (chirp->real_mode | |
1767 | ? 0 | |
1768 | : (msr_instruction_relocate | |
1769 | | msr_data_relocate)) | |
1770 | | (chirp->little_endian | |
1771 | ? (msr_little_endian_mode | |
1772 | | msr_interrupt_little_endian_mode) | |
1773 | : 0) | |
1774 | | (chirp->floating_point_available | |
1775 | ? msr_floating_point_available | |
1776 | : 0) | |
1777 | | (chirp->interrupt_prefix | |
1778 | ? msr_interrupt_prefix | |
1779 | : 0) | |
1780 | )); | |
1781 | tree_parse(root, "/openprom/init/register/sdr1 0x%lx", | |
1782 | (unsigned long)(chirp->htab_ra | |
1783 | | MASK32(16, 22) | |
1784 | | ((chirp->sizeof_htab - 1) >> 16))); | |
1785 | /* make certain that the segment registers map straight through */ | |
1786 | for (i = 0; i < 16; i++) { | |
1787 | tree_parse(root, "/openprom/init/register/sr%d 0x%lx", | |
1788 | i, (unsigned long)i); | |
1789 | } | |
1790 | ||
1791 | /* establish an initial state for all processors */ | |
1792 | ||
1793 | ||
1794 | /* the client interface address */ | |
1795 | tree_parse(root, "/openprom/init/register/r5 0x%lx", | |
1796 | (unsigned long)chirp->code_client_va); | |
1797 | /* a stack */ | |
1798 | tree_parse(root, "/openprom/init/register/sp 0x%lx", | |
1799 | (unsigned long)(chirp->stack_va + chirp->sizeof_stack - 16)); | |
1800 | /* in chrp mode any arguments end up being concatinated */ | |
1801 | tree_parse(root, "/openprom/init/stack/stack-type chirp"); | |
1802 | ||
1803 | ||
1804 | /* client interface - emul-call followed by return instruction */ | |
1805 | ||
1806 | ||
1807 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1808 | (unsigned long)chirp->code_client_ra); | |
1809 | tree_parse(node, "./psim,description \"client-interface instruction"); | |
1810 | tree_parse(node, "./real-address 0x%lx", | |
1811 | (unsigned long)chirp->code_client_ra); | |
1812 | tree_parse(node, "./data 0x%lx", | |
1813 | (unsigned long)emul_call_instruction); | |
1814 | ||
1815 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1816 | (unsigned long)(chirp->code_client_ra + 4)); | |
1817 | tree_parse(node, "./psim,description \"client-interface return instruction"); | |
1818 | tree_parse(node, "./real-address 0x%lx", | |
1819 | (unsigned long)(chirp->code_client_ra + 4)); | |
1820 | tree_parse(node, "./data 0x%lx", | |
1821 | (unsigned long)emul_blr_instruction); | |
1822 | ||
1823 | ||
1824 | /* return address for client callbacks - an emul-call instruction | |
1825 | that is again followed by a return instruction */ | |
1826 | ||
1827 | ||
1828 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1829 | (unsigned long)chirp->code_callback_ra); | |
1830 | tree_parse(node, "./psim,description \"client-callback instruction"); | |
1831 | tree_parse(node, "./real-address 0x%lx", | |
1832 | (unsigned long)chirp->code_callback_ra); | |
1833 | tree_parse(node, "./data 0x%lx", | |
1834 | (unsigned long)emul_call_instruction); | |
1835 | ||
1836 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1837 | (unsigned long)(chirp->code_callback_ra + 4)); | |
1838 | tree_parse(node, "./psim,description \"client-callback return instruction"); | |
1839 | tree_parse(node, "./real-address 0x%lx", | |
1840 | (unsigned long)(chirp->code_callback_ra + 4)); | |
1841 | tree_parse(node, "./data 0x%lx", | |
1842 | (unsigned long)emul_blr_instruction); | |
1843 | ||
1844 | /* loop to keep other processors busy */ | |
1845 | ||
1846 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1847 | (unsigned long)chirp->code_loop_ra); | |
1848 | tree_parse(node, "./psim,description \"processor busy loop"); | |
1849 | tree_parse(node, "./real-address 0x%lx", | |
1850 | (unsigned long)chirp->code_loop_ra); | |
1851 | tree_parse(node, "./data 0x%lx", | |
1852 | (unsigned long)emul_loop_instruction); | |
1853 | ||
1854 | /* hash table */ | |
1855 | ||
1856 | /* create a hash table */ | |
1857 | ||
1858 | if (!chirp->real_mode) { | |
1859 | node = tree_parse(root, "/openprom/init/htab@0x%lx", | |
1860 | (unsigned long)chirp->htab_ra); | |
1861 | tree_parse(node, "./claim 0"); | |
1862 | tree_parse(node, "./real-address 0x%lx", | |
1863 | (unsigned long)chirp->htab_ra); | |
1864 | tree_parse(node, "./nr-bytes 0x%lx", | |
1865 | (unsigned long)chirp->sizeof_htab); | |
1866 | } | |
1867 | ||
1868 | /* map in the stack */ | |
1869 | ||
1870 | if (!chirp->real_mode) { | |
1871 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1872 | (unsigned long)chirp->stack_ra); | |
1873 | tree_parse(node, "./psim,description \"map in the stack"); | |
1874 | tree_parse(node, "./claim 1"); | |
1875 | tree_parse(node, "./virtual-address 0x%lx", | |
1876 | (unsigned long)chirp->stack_va); | |
1877 | tree_parse(node, "./real-address 0x%lx", | |
1878 | (unsigned long)chirp->stack_ra); | |
1879 | tree_parse(node, "./nr-bytes 0x%lx", | |
1880 | (unsigned long)chirp->sizeof_stack); | |
1881 | tree_parse(node, "./wimg %d", 0x7); | |
1882 | tree_parse(node, "./pp %d", 0x2); | |
1883 | } | |
1884 | ||
1885 | /* map in the chrp openboot callback code */ | |
1886 | ||
1887 | if (!chirp->real_mode) { | |
1888 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1889 | (unsigned long)chirp->code_ra); | |
1890 | tree_parse(node, "./psim,description \"map in chrp openboot callback code"); | |
1891 | tree_parse(node, "./claim 1"); | |
1892 | tree_parse(node, "./virtual-address 0x%lx", | |
1893 | (unsigned long)chirp->code_va); | |
1894 | tree_parse(node, "./real-address 0x%lx", | |
1895 | (unsigned long)chirp->code_ra); | |
1896 | tree_parse(node, "./nr-bytes 0x%lx", | |
1897 | (unsigned long)chirp->sizeof_code); | |
1898 | tree_parse(node, "./wimg %d", 0x7); | |
1899 | tree_parse(node, "./pp %d", 0x2); | |
1900 | } | |
1901 | ||
1902 | /* map in the program to run */ | |
1903 | ||
1904 | if (chirp->real_mode) { | |
1905 | node = tree_parse(node, "/openprom/init/load-binary"); | |
1906 | tree_parse(node, "./psim,description \"load the binary"); | |
1907 | tree_parse(node, "./file-name %s", bfd_get_filename(image)); | |
1908 | tree_parse(node, "./claim 1"); | |
1909 | } | |
1910 | else { | |
1911 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1912 | (unsigned long)chirp->load_base); | |
1913 | tree_parse(node, "./psim,description \"load & map the binary"); | |
1914 | tree_parse(node, "./claim 1"); | |
1915 | tree_parse(node, "./file-name \"%s", bfd_get_filename(image)); | |
1916 | tree_parse(node, "./wimg %d", 0x7); | |
1917 | tree_parse(node, "./pp %d", 0x2); | |
1918 | } | |
1919 | ||
560ba567 AC |
1920 | /* map in the interrupt vectors */ |
1921 | ||
1922 | if (!chirp->real_mode) { | |
1923 | node = tree_parse(root, "/openprom/init/htab/pte@0x0"); | |
1924 | tree_parse(node, "./psim,description \"map in interrupt vectors"); | |
1925 | tree_parse(node, "./virtual-address 0x0"); | |
1926 | tree_parse(node, "./real-address 0x0"); | |
1927 | tree_parse(node, "./nr-bytes 0x3000"); | |
1928 | tree_parse(node, "./wimg %d", 0x7); | |
1929 | tree_parse(node, "./pp %d", 0x2); | |
1930 | } | |
1931 | ||
c906108c SS |
1932 | return chirp; |
1933 | } | |
1934 | ||
1935 | static void | |
1936 | emul_chirp_init(os_emul_data *emul_data, | |
1937 | int nr_cpus) | |
1938 | { | |
1939 | emul_data->state = serving; | |
1940 | } | |
1941 | ||
1942 | static int | |
1943 | emul_chirp_instruction_call(cpu *processor, | |
1944 | unsigned_word cia, | |
1945 | unsigned_word ra, | |
1946 | os_emul_data *emul_data) | |
1947 | { | |
1948 | unsigned_word service_name_addr; | |
1949 | unsigned_word result; | |
1950 | char service_buf[32]; | |
1951 | char *service_name; | |
1952 | chirp_services *service; | |
1953 | ||
1954 | switch (emul_data->state) { | |
1955 | ||
1956 | case serving: | |
1957 | /* we are waiting on an OpenBoot request from the client program | |
1958 | via the client interface */ | |
1959 | if (cia != emul_data->code_client_va) | |
1960 | return 0; | |
1961 | emul_data->return_address = LR; | |
1962 | emul_data->arguments = cpu_registers(processor)->gpr[3]; | |
1963 | /* try to determine what to do */ | |
1964 | service_name_addr = emul_read_word(cpu_registers(processor)->gpr[3], | |
1965 | processor, cia); | |
1966 | service_name = emul_read_string(service_buf, service_name_addr, | |
1967 | sizeof(service_buf), processor, cia); | |
1968 | emul_data->n_args = emul_read_word(emul_data->arguments + sizeof(unsigned_cell), | |
1969 | processor, cia); | |
1970 | emul_data->n_returns = emul_read_word(emul_data->arguments + 2 * sizeof(unsigned_cell), | |
1971 | processor, cia); | |
1972 | /* verify what was passed */ | |
1973 | if (service_name_addr == 0 | |
1974 | || service_name == NULL) { | |
1975 | error("OpenFirmware called with invalid (NULL) service name from 0x%lx with args 0x%lx\n", | |
1976 | (unsigned long)emul_data->return_address, | |
1977 | (unsigned long)emul_data->arguments); | |
1978 | } | |
1979 | if (emul_data->n_args > 6) { /* See iee1275 requirements on nr returns */ | |
1980 | error("OpenFirmware service %s called from 0x%lx with args 0x%lx, too many args (%d)\n", | |
1981 | (unsigned long)emul_data->return_address, | |
1982 | (unsigned long)emul_data->arguments, | |
1983 | emul_data->n_returns); | |
1984 | } | |
1985 | if (emul_data->n_returns > 6) { | |
1986 | error("OpenFirmware service %s called from 0x%lx with args 0x%lx, with too many returns (%d)\n", | |
1987 | (unsigned long)emul_data->return_address, | |
1988 | (unsigned long)emul_data->arguments, | |
1989 | emul_data->n_args); | |
1990 | } | |
1991 | /* look it up */ | |
1992 | TRACE(trace_os_emul, ("%s called from 0x%lx with args 0x%lx\n", | |
1993 | service_name, | |
1994 | (unsigned long)emul_data->return_address, | |
1995 | (unsigned long)emul_data->arguments)); | |
1996 | service = services; | |
1997 | while (service->name != NULL && strcmp(service->name, service_name) != 0) | |
1998 | service++; | |
1999 | /* found or not? */ | |
2000 | if (service->name == NULL) { | |
2001 | error("OpenBoot service `%s' not found\n", service_name); | |
2002 | TRACE(trace_os_emul, ("%s not found\n", service_name)); | |
2003 | cpu_registers(processor)->gpr[3] = -1; | |
2004 | } | |
2005 | else { | |
2006 | emul_data->service = service; | |
2007 | /* call upon it */ | |
2008 | result = service->handler(emul_data, processor, cia); | |
2009 | if (result != 0) | |
2010 | TRACE(trace_os_emul, ("%s aborted with %ld\n", service_name, (long)result)); | |
2011 | cpu_registers(processor)->gpr[3] = result; | |
2012 | } | |
2013 | break; | |
2014 | ||
2015 | default: | |
2016 | error("emul_chirp_instruction_call() unknown internal state\n"); | |
2017 | result = -1; | |
2018 | break; | |
2019 | ||
2020 | } | |
2021 | ||
2022 | /* return to caller - instruction following this is a function return */ | |
2023 | return 1; | |
2024 | } | |
2025 | ||
2026 | const os_emul emul_chirp = { | |
2027 | "chirp", | |
2028 | emul_chirp_create, | |
2029 | emul_chirp_init, | |
2030 | NULL, /*system_call*/ | |
2031 | emul_chirp_instruction_call, | |
2032 | 0 /*data*/ | |
2033 | }; | |
2034 | ||
2035 | #endif |