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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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
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 | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _EMUL_CHIRP_C_ | |
22 | #define _EMUL_CHIRP_C_ | |
23 | ||
24 | /* Note: this module is called via a table. There is no benefit in | |
25 | making it inline */ | |
26 | ||
27 | #include "emul_generic.h" | |
28 | #include "emul_chirp.h" | |
29 | ||
30 | #ifdef HAVE_STRING_H | |
31 | #include <string.h> | |
32 | #else | |
33 | #ifdef HAVE_STRINGS_H | |
34 | #include <strings.h> | |
35 | #endif | |
36 | #endif | |
37 | ||
38 | #ifdef HAVE_UNISTD_H | |
39 | #include <unistd.h> | |
40 | #endif | |
41 | ||
42 | #ifndef STATIC_INLINE_EMUL_CHIRP | |
43 | #define STATIC_INLINE_EMUL_CHIRP STATIC_INLINE | |
44 | #endif | |
45 | ||
46 | ||
47 | /* EMULATION | |
48 | ||
49 | ||
50 | OpenFirmware - IEEE Standard for Boot (Initialization | |
51 | Configuration) Firmware. | |
52 | ||
53 | ||
54 | DESCRIPTION | |
55 | ||
56 | ||
57 | BUGS | |
58 | ||
59 | ||
60 | This code assumes that the memory node has #address-cells and | |
61 | #size-cells set to one. For future implementations, this may not | |
62 | be the case. | |
63 | ||
64 | */ | |
65 | ||
66 | ||
67 | ||
68 | ||
69 | /* Descriptor of the open boot services being emulated */ | |
70 | ||
71 | typedef int (chirp_handler) | |
72 | (os_emul_data *data, | |
73 | cpu *processor, | |
74 | unsigned_word cia); | |
75 | ||
76 | typedef struct _chirp_services { | |
77 | const char *name; | |
78 | chirp_handler *handler; | |
79 | } chirp_services; | |
80 | ||
81 | ||
82 | /* The OpenBoot emulation is, at any time either waiting for a client | |
83 | request or waiting on a client callback */ | |
84 | typedef enum { | |
85 | serving, | |
86 | emulating, | |
87 | faulting, | |
88 | } chirp_emul_state; | |
89 | ||
90 | struct _os_emul_data { | |
91 | chirp_emul_state state; | |
92 | unsigned_word return_address; | |
93 | unsigned_word arguments; | |
94 | unsigned_word n_args; | |
95 | unsigned_word n_returns; | |
96 | chirp_services *service; | |
97 | device *root; | |
98 | chirp_services *services; | |
99 | /* configuration */ | |
100 | unsigned_word memory_size; | |
101 | unsigned_word real_base; | |
102 | unsigned_word real_size; | |
103 | unsigned_word virt_base; | |
104 | unsigned_word virt_size; | |
105 | int real_mode; | |
106 | int little_endian; | |
107 | int floating_point_available; | |
108 | int interrupt_prefix; | |
109 | unsigned_word load_base; | |
110 | /* hash table */ | |
111 | unsigned_word nr_page_table_entry_groups; | |
112 | unsigned_word htab_offset; | |
113 | unsigned_word htab_ra; | |
114 | unsigned_word htab_va; | |
115 | unsigned_word sizeof_htab; | |
116 | /* virtual address of htab */ | |
117 | unsigned_word stack_offset; | |
118 | unsigned_word stack_ra; | |
119 | unsigned_word stack_va; | |
120 | unsigned_word sizeof_stack; | |
121 | /* addresses of emulation instructions virtual/real */ | |
122 | unsigned_word code_offset; | |
123 | unsigned_word code_va; | |
124 | unsigned_word code_ra; | |
125 | unsigned_word sizeof_code; | |
126 | unsigned_word code_client_va; | |
127 | unsigned_word code_client_ra; | |
128 | unsigned_word code_callback_va; | |
129 | unsigned_word code_callback_ra; | |
130 | unsigned_word code_loop_va; | |
131 | unsigned_word code_loop_ra; | |
132 | }; | |
133 | ||
134 | ||
135 | /* returns the name of the corresponding Ihandle */ | |
136 | static const char * | |
137 | ihandle_name(device_instance *ihandle) | |
138 | { | |
139 | if (ihandle == NULL) | |
140 | return ""; | |
141 | else | |
142 | return device_name(device_instance_device(ihandle)); | |
143 | } | |
144 | ||
145 | ||
146 | ||
147 | /* Read/write the argument list making certain that all values are | |
148 | converted to/from host byte order. | |
149 | ||
150 | In the below only n_args+n_returns is read/written */ | |
151 | ||
152 | static int | |
153 | chirp_read_t2h_args(void *args, | |
154 | int sizeof_args, | |
155 | int n_args, | |
156 | int n_returns, | |
157 | os_emul_data *data, | |
158 | cpu *processor, | |
159 | unsigned_word cia) | |
160 | { | |
161 | unsigned_cell *words; | |
162 | int i; | |
163 | /* check against the number of arguments specified by the client | |
164 | program */ | |
165 | if ((n_args >= 0 && data->n_args != n_args) | |
166 | || (n_returns >= 0 && data->n_returns != n_returns)) { | |
167 | TRACE(trace_os_emul, ("%s - invalid nr of args - n_args=%ld, n_returns=%ld\n", | |
168 | data->service->name, | |
169 | (long)data->n_args, | |
170 | (long)data->n_returns)); | |
171 | return -1; | |
172 | } | |
173 | /* check that there is enough space */ | |
174 | if (sizeof(unsigned_cell) * (data->n_args + data->n_returns) > sizeof_args) | |
175 | return -1; | |
176 | /* bring in the data */ | |
177 | memset(args, 0, sizeof_args); | |
178 | emul_read_buffer(args, data->arguments + 3 * sizeof(unsigned_cell), | |
179 | sizeof(unsigned_cell) * (data->n_args + data->n_returns), | |
180 | processor, cia); | |
181 | /* convert all words to host format */ | |
182 | words = args; | |
183 | for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++) | |
184 | words[i] = T2H_cell(words[i]); | |
185 | return 0; | |
186 | } | |
187 | ||
188 | static void | |
189 | chirp_write_h2t_args(void *args, | |
190 | int sizeof_args, | |
191 | os_emul_data *data, | |
192 | cpu *processor, | |
193 | unsigned_word cia) | |
194 | { | |
195 | int i; | |
196 | unsigned_cell *words; | |
197 | /* convert to target everything */ | |
198 | words = args; | |
199 | for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++) | |
200 | words[i] = H2T_cell(words[i]); | |
201 | /* bring in the data */ | |
202 | emul_write_buffer(args, data->arguments + 3 * sizeof(unsigned_cell), | |
203 | sizeof(unsigned_cell) * (data->n_args + data->n_returns), | |
204 | processor, cia); | |
205 | } | |
206 | ||
207 | ||
208 | /* OpenBoot emulation functions */ | |
209 | ||
210 | /* client interface */ | |
211 | ||
212 | static int | |
213 | chirp_emul_test(os_emul_data *data, | |
214 | cpu *processor, | |
215 | unsigned_word cia) | |
216 | { | |
217 | struct test_args { | |
218 | /*in*/ | |
219 | unsigned_cell name; /*string*/ | |
220 | /*out*/ | |
221 | unsigned_cell missing; | |
222 | } args; | |
223 | char name[32]; | |
224 | chirp_services *service = NULL; | |
225 | /* read in the arguments */ | |
226 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
227 | return -1; | |
228 | emul_read_string(name, args.name, sizeof(name), | |
229 | processor, cia); | |
230 | TRACE(trace_os_emul, ("test - in - name=`%s'\n", name)); | |
231 | /* see if we know about the service */ | |
232 | service = data->services; | |
233 | while (service->name != NULL && strcmp(service->name, name) != 0) { | |
234 | service++; | |
235 | } | |
236 | if (service->name == NULL) | |
237 | args.missing = -1; | |
238 | else | |
239 | args.missing = 0; | |
240 | /* write the arguments back out */ | |
241 | TRACE(trace_os_emul, ("test - out - missing=%ld\n", | |
242 | (long)args.missing)); | |
243 | chirp_write_h2t_args(&args, | |
244 | sizeof(args), | |
245 | data, | |
246 | processor, cia); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | ||
251 | /* Device tree */ | |
252 | ||
253 | static int | |
254 | chirp_emul_peer(os_emul_data *data, | |
255 | cpu *processor, | |
256 | unsigned_word cia) | |
257 | { | |
258 | struct peer_args { | |
259 | /*in*/ | |
260 | unsigned_cell phandle; | |
261 | /*out*/ | |
262 | unsigned_cell sibling_phandle; | |
263 | } args; | |
264 | device *phandle; | |
265 | device *sibling_phandle = NULL; | |
266 | /* read in the arguments */ | |
267 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
268 | return -1; | |
269 | phandle = external_to_device(data->root, args.phandle); | |
270 | TRACE(trace_os_emul, ("peer - in - phandle=0x%lx(0x%lx`%s')\n", | |
271 | (unsigned long)args.phandle, | |
272 | (unsigned long)phandle, | |
273 | (phandle == NULL ? "" : device_name(phandle)))); | |
274 | /* find the peer */ | |
275 | if (args.phandle == 0) { | |
276 | sibling_phandle = data->root; | |
277 | args.sibling_phandle = device_to_external(sibling_phandle); | |
278 | } | |
279 | else if (phandle == NULL) { | |
280 | sibling_phandle = NULL; | |
281 | args.sibling_phandle = -1; | |
282 | } | |
283 | else { | |
284 | sibling_phandle = device_sibling(phandle); | |
285 | if (sibling_phandle == NULL) | |
286 | args.sibling_phandle = 0; | |
287 | else | |
288 | args.sibling_phandle = device_to_external(sibling_phandle); | |
289 | } | |
290 | /* write the arguments back out */ | |
291 | TRACE(trace_os_emul, ("peer - out - sibling_phandle=0x%lx(0x%lx`%s')\n", | |
292 | (unsigned long)args.sibling_phandle, | |
293 | (unsigned long)sibling_phandle, | |
294 | (sibling_phandle == NULL ? "" : device_name(sibling_phandle)))); | |
295 | chirp_write_h2t_args(&args, | |
296 | sizeof(args), | |
297 | data, | |
298 | processor, cia); | |
299 | return 0; | |
300 | } | |
301 | ||
302 | static int | |
303 | chirp_emul_child(os_emul_data *data, | |
304 | cpu *processor, | |
305 | unsigned_word cia) | |
306 | { | |
307 | struct child_args { | |
308 | /*in*/ | |
309 | unsigned_cell phandle; | |
310 | /*out*/ | |
311 | unsigned_cell child_phandle; | |
312 | } args; | |
313 | device *phandle; | |
314 | device *child_phandle; | |
315 | /* read the arguments in */ | |
316 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
317 | return -1; | |
318 | phandle = external_to_device(data->root, args.phandle); | |
319 | TRACE(trace_os_emul, ("child - in - phandle=0x%lx(0x%lx`%s')\n", | |
320 | (unsigned long)args.phandle, | |
321 | (unsigned long)phandle, | |
322 | (phandle == NULL ? "" : device_name(phandle)))); | |
323 | /* find a child */ | |
324 | if (args.phandle == 0 | |
325 | || phandle == NULL) { | |
326 | child_phandle = NULL; | |
327 | args.child_phandle = -1; | |
328 | } | |
329 | else { | |
330 | child_phandle = device_child(phandle); | |
331 | if (child_phandle == NULL) | |
332 | args.child_phandle = 0; | |
333 | else | |
334 | args.child_phandle = device_to_external(child_phandle); | |
335 | } | |
336 | /* write the result out */ | |
337 | TRACE(trace_os_emul, ("child - out - child_phandle=0x%lx(0x%lx`%s')\n", | |
338 | (unsigned long)args.child_phandle, | |
339 | (unsigned long)child_phandle, | |
340 | (child_phandle == NULL ? "" : device_name(child_phandle)))); | |
341 | chirp_write_h2t_args(&args, | |
342 | sizeof(args), | |
343 | data, | |
344 | processor, cia); | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static int | |
349 | chirp_emul_parent(os_emul_data *data, | |
350 | cpu *processor, | |
351 | unsigned_word cia) | |
352 | { | |
353 | struct parent_args { | |
354 | /*in*/ | |
355 | unsigned_cell phandle; | |
356 | /*out*/ | |
357 | unsigned_cell parent_phandle; | |
358 | } args; | |
359 | device *phandle; | |
360 | device *parent_phandle; | |
361 | /* read the args in */ | |
362 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
363 | return -1; | |
364 | phandle = external_to_device(data->root, args.phandle); | |
365 | TRACE(trace_os_emul, ("parent - in - phandle=0x%lx(0x%lx`%s')\n", | |
366 | (unsigned long)args.phandle, | |
367 | (unsigned long)phandle, | |
368 | (phandle == NULL ? "" : device_name(phandle)))); | |
369 | /* find a parent */ | |
370 | if (args.phandle == 0 | |
371 | || phandle == NULL) { | |
372 | parent_phandle = NULL; | |
373 | args.parent_phandle = -1; | |
374 | } | |
375 | else { | |
376 | parent_phandle = device_parent(phandle); | |
377 | if (parent_phandle == NULL) | |
378 | args.parent_phandle = 0; | |
379 | else | |
380 | args.parent_phandle = device_to_external(parent_phandle); | |
381 | } | |
382 | /* return the result */ | |
383 | TRACE(trace_os_emul, ("parent - out - parent_phandle=0x%lx(0x%lx`%s')\n", | |
384 | (unsigned long)args.parent_phandle, | |
385 | (unsigned long)parent_phandle, | |
386 | (parent_phandle == NULL ? "" : device_name(parent_phandle)))); | |
387 | chirp_write_h2t_args(&args, | |
388 | sizeof(args), | |
389 | data, | |
390 | processor, cia); | |
391 | return 0; | |
392 | } | |
393 | ||
394 | static int | |
395 | chirp_emul_instance_to_package(os_emul_data *data, | |
396 | cpu *processor, | |
397 | unsigned_word cia) | |
398 | { | |
399 | struct instance_to_package_args { | |
400 | /*in*/ | |
401 | unsigned_cell ihandle; | |
402 | /*out*/ | |
403 | unsigned_cell phandle; | |
404 | } args; | |
405 | device_instance *ihandle; | |
406 | device *phandle = NULL; | |
407 | /* read the args in */ | |
408 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
409 | return -1; | |
410 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
411 | TRACE(trace_os_emul, ("instance-to-package - in - ihandle=0x%lx(0x%lx`%s')\n", | |
412 | (unsigned long)args.ihandle, | |
413 | (unsigned long)ihandle, | |
414 | ihandle_name(ihandle))); | |
415 | /* find the corresponding phandle */ | |
416 | if (ihandle == NULL) { | |
417 | phandle = NULL; | |
418 | args.phandle = -1; | |
419 | } | |
420 | else { | |
421 | phandle = device_instance_device(ihandle); | |
422 | args.phandle = device_to_external(phandle); | |
423 | } | |
424 | /* return the result */ | |
425 | TRACE(trace_os_emul, ("instance-to-package - out - phandle=0x%lx(0x%lx`%s')\n", | |
426 | (unsigned long)args.phandle, | |
427 | (unsigned long)phandle, | |
428 | (phandle == NULL ? "" : device_name(phandle)))); | |
429 | chirp_write_h2t_args(&args, | |
430 | sizeof(args), | |
431 | data, | |
432 | processor, cia); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static int | |
437 | chirp_emul_getproplen(os_emul_data *data, | |
438 | cpu *processor, | |
439 | unsigned_word cia) | |
440 | { | |
441 | struct getproplen_args { | |
442 | /*in*/ | |
443 | unsigned_cell phandle; | |
444 | unsigned_cell name; | |
445 | /*out*/ | |
446 | unsigned_cell proplen; | |
447 | } args; | |
448 | char name[32]; | |
449 | device *phandle; | |
450 | /* read the args in */ | |
451 | if (chirp_read_t2h_args(&args, sizeof(args), 2, 1, data, processor, cia)) | |
452 | return -1; | |
453 | phandle = external_to_device(data->root, args.phandle); | |
454 | emul_read_string(name, | |
455 | args.name, | |
456 | sizeof(name), | |
457 | processor, cia); | |
458 | TRACE(trace_os_emul, ("getproplen - in - phandle=0x%lx(0x%lx`%s') name=`%s'\n", | |
459 | (unsigned long)args.phandle, | |
460 | (unsigned long)phandle, | |
461 | (phandle == NULL ? "" : device_name(phandle)), | |
462 | name)); | |
463 | /* find our prop and get its length */ | |
464 | if (args.phandle == 0 | |
465 | || phandle == NULL) { | |
466 | args.proplen = -1; | |
467 | } | |
468 | else { | |
469 | const device_property *prop = device_find_property(phandle, name); | |
470 | if (prop == (device_property*)0) { | |
471 | args.proplen = -1; | |
472 | } | |
473 | else { | |
474 | args.proplen = prop->sizeof_array; | |
475 | } | |
476 | } | |
477 | /* return the result */ | |
478 | TRACE(trace_os_emul, ("getproplen - out - proplen=%ld\n", | |
479 | (unsigned long)args.proplen)); | |
480 | chirp_write_h2t_args(&args, | |
481 | sizeof(args), | |
482 | data, | |
483 | processor, cia); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | static int | |
488 | chirp_emul_getprop(os_emul_data *data, | |
489 | cpu *processor, | |
490 | unsigned_word cia) | |
491 | { | |
492 | struct getprop_args { | |
493 | /*in*/ | |
494 | unsigned_cell phandle; | |
495 | unsigned_cell name; | |
496 | unsigned_cell buf; | |
497 | unsigned_cell buflen; | |
498 | /*out*/ | |
499 | unsigned_cell size; | |
500 | } args; | |
501 | char name[32]; | |
502 | device *phandle; | |
503 | /* read in the args, the return is optional */ | |
504 | if (chirp_read_t2h_args(&args, sizeof(args), 4, -1, data, processor, cia)) | |
505 | return -1; | |
506 | phandle = external_to_device(data->root, args.phandle); | |
507 | emul_read_string(name, | |
508 | args.name, | |
509 | sizeof(name), | |
510 | processor, cia); | |
511 | TRACE(trace_os_emul, ("getprop - in - phandle=0x%lx(0x%lx`%s') name=`%s' buf=0x%lx buflen=%ld\n", | |
512 | (unsigned long)args.phandle, | |
513 | (unsigned long)phandle, | |
514 | (phandle == NULL ? "" : device_name(phandle)), | |
515 | name, | |
516 | (unsigned long)args.buf, | |
517 | (unsigned long)args.buflen)); | |
518 | /* get the property */ | |
519 | if (args.phandle == 0 | |
520 | || phandle == NULL) { | |
521 | args.size = -1; | |
522 | } | |
523 | else { | |
524 | const device_property *prop = device_find_property(phandle, name); | |
525 | if (prop == NULL) { | |
526 | args.size = -1; | |
527 | } | |
528 | else { | |
529 | int size = args.buflen; | |
530 | if (size > prop->sizeof_array) | |
531 | size = prop->sizeof_array; | |
532 | emul_write_buffer(prop->array, args.buf, | |
533 | size, | |
534 | processor, cia); | |
535 | args.size = size; | |
536 | switch (prop->type) { | |
537 | case string_property: | |
538 | TRACE(trace_os_emul, ("getprop - string `%s'\n", | |
539 | device_find_string_property(phandle, name))); | |
540 | break; | |
541 | case ihandle_property: | |
542 | TRACE(trace_os_emul, ("getprop - ihandle=0x%lx(0x%lx`%s')\n", | |
543 | BE2H_cell(*(unsigned_cell*)prop->array), | |
544 | (unsigned long)device_find_ihandle_property(phandle, name), | |
545 | ihandle_name(device_find_ihandle_property(phandle, name)))); | |
546 | break; | |
547 | default: | |
548 | break; | |
549 | } | |
550 | } | |
551 | } | |
552 | /* write back the result */ | |
553 | if (data->n_returns == 0) | |
554 | TRACE(trace_os_emul, ("getprop - out - size=%ld (not returned)\n", | |
555 | (unsigned long)args.size)); | |
556 | else { | |
557 | TRACE(trace_os_emul, ("getprop - out - size=%ld\n", | |
558 | (unsigned long)args.size)); | |
559 | chirp_write_h2t_args(&args, | |
560 | sizeof(args), | |
561 | data, | |
562 | processor, cia); | |
563 | } | |
564 | return 0; | |
565 | } | |
566 | ||
567 | static int | |
568 | chirp_emul_nextprop(os_emul_data *data, | |
569 | cpu *processor, | |
570 | unsigned_word cia) | |
571 | { | |
572 | struct nextprop_args { | |
573 | /*in*/ | |
574 | unsigned_cell phandle; | |
575 | unsigned_cell previous; | |
576 | unsigned_cell buf; | |
577 | /*out*/ | |
578 | unsigned_cell flag; | |
579 | } args; | |
580 | char previous[32]; | |
581 | device *phandle; | |
582 | /* read in the args */ | |
583 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
584 | return -1; | |
585 | phandle = external_to_device(data->root, args.phandle); | |
911b2333 AC |
586 | if (args.previous != 0) |
587 | emul_read_string(previous, | |
588 | args.previous, | |
589 | sizeof(previous), | |
590 | processor, cia); | |
591 | else | |
592 | /* If previous is NULL, make it look like the empty string. The | |
593 | next property after the empty string is the first property. */ | |
594 | strcpy (previous, ""); | |
c906108c SS |
595 | TRACE(trace_os_emul, ("nextprop - in - phandle=0x%lx(0x%lx`%s') previous=`%s' buf=0x%lx\n", |
596 | (unsigned long)args.phandle, | |
597 | (unsigned long)phandle, | |
598 | (phandle == NULL ? "" : device_name(phandle)), | |
599 | previous, | |
600 | (unsigned long)args.buf)); | |
601 | /* find the next property */ | |
602 | if (args.phandle == 0 | |
603 | || phandle == NULL) { | |
604 | args.flag = -1; | |
605 | } | |
606 | else { | |
607 | const device_property *prev_prop = device_find_property(phandle, previous); | |
608 | if (prev_prop == NULL) { | |
911b2333 AC |
609 | if (strcmp (previous, "") == 0) |
610 | args.flag = 0; /* No properties */ | |
611 | else | |
612 | args.flag = -1; /* name invalid */ | |
c906108c SS |
613 | } |
614 | else { | |
615 | const device_property *next_prop; | |
911b2333 AC |
616 | if (strcmp (previous, "") == 0) { |
617 | next_prop = prev_prop; /* The first property. */ | |
618 | } | |
619 | else { | |
620 | next_prop = device_next_property(prev_prop); | |
621 | } | |
c906108c SS |
622 | if (next_prop == NULL) { |
623 | args.flag = 0; /* last property */ | |
624 | } | |
625 | else { | |
626 | emul_write_buffer(next_prop->name, args.buf, strlen(next_prop->name), | |
627 | processor, cia); | |
628 | TRACE(trace_os_emul, ("nextprop - name=`%s'\n", next_prop->name)); | |
629 | args.flag = 1; /* worked ok */ | |
630 | } | |
631 | } | |
632 | } | |
633 | /* write back the result */ | |
634 | TRACE(trace_os_emul, ("nextprop - out - flag=%ld\n", | |
635 | (unsigned long)args.flag)); | |
636 | chirp_write_h2t_args(&args, | |
637 | sizeof(args), | |
638 | data, | |
639 | processor, cia); | |
640 | return 0; | |
641 | } | |
642 | ||
643 | #if 0 | |
644 | static int | |
645 | chirp_emul_setprop(os_emul_data *data, | |
646 | cpu *processor, | |
647 | unsigned_word cia) | |
648 | { | |
649 | error("chirp: setprop method not implemented\n"); | |
650 | return 0; | |
651 | } | |
652 | #endif | |
653 | ||
654 | static int | |
655 | chirp_emul_canon(os_emul_data *data, | |
656 | cpu *processor, | |
657 | unsigned_word cia) | |
658 | { | |
659 | struct canon_args { | |
660 | /*in*/ | |
661 | unsigned_cell device_specifier; | |
662 | unsigned_cell buf; | |
663 | unsigned_cell buflen; | |
664 | /*out*/ | |
665 | unsigned_cell length; | |
666 | } args; | |
667 | char device_specifier[1024]; | |
668 | device *phandle; | |
669 | const char *path; | |
670 | int length; | |
671 | /* read in the args */ | |
672 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
673 | return -1; | |
674 | emul_read_string(device_specifier, | |
675 | args.device_specifier, | |
676 | sizeof(device_specifier), | |
677 | processor, cia); | |
678 | TRACE(trace_os_emul, ("canon - in - device_specifier=`%s' buf=0x%lx buflen=%lx\n", | |
679 | device_specifier, | |
680 | (unsigned long)args.buf, | |
681 | (unsigned long)args.buflen)); | |
682 | /* canon the name */ | |
683 | phandle = tree_find_device(data->root, device_specifier); | |
684 | if (phandle == NULL) { | |
685 | length = -1; | |
686 | path = ""; | |
687 | args.length = -1; | |
688 | } | |
689 | else { | |
690 | path = device_path(phandle); | |
691 | length = strlen(path); | |
692 | if (length >= args.buflen) | |
693 | length = args.buflen - 1; | |
694 | emul_write_buffer(path, args.buf, length, | |
695 | processor, cia); | |
696 | args.length = length; | |
697 | } | |
698 | /* write back the result */ | |
699 | TRACE(trace_os_emul, ("canon - out - length=%ld buf=`%s'\n", | |
700 | (unsigned long)args.length, | |
701 | path)); | |
702 | chirp_write_h2t_args(&args, | |
703 | sizeof(args), | |
704 | data, | |
705 | processor, cia); | |
706 | return 0; | |
707 | } | |
708 | ||
709 | static int | |
710 | chirp_emul_finddevice(os_emul_data *data, | |
711 | cpu *processor, | |
712 | unsigned_word cia) | |
713 | { | |
714 | struct finddevice_args { | |
715 | /*in*/ | |
716 | unsigned_cell device_specifier; | |
717 | /*out*/ | |
718 | unsigned_cell phandle; | |
719 | } args; | |
720 | char device_specifier[1024]; | |
721 | device *phandle; | |
722 | /* get the args */ | |
723 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
724 | return -1; | |
725 | emul_read_string(device_specifier, | |
726 | args.device_specifier, | |
727 | sizeof(device_specifier), | |
728 | processor, cia); | |
729 | TRACE(trace_os_emul, ("finddevice - in - device_specifier=`%s'\n", | |
730 | device_specifier)); | |
731 | /* find the device */ | |
732 | phandle = tree_find_device(data->root, device_specifier); | |
733 | if (phandle == NULL) | |
734 | args.phandle = -1; | |
735 | else | |
736 | args.phandle = device_to_external(phandle); | |
737 | /* return its phandle */ | |
738 | TRACE(trace_os_emul, ("finddevice - out - phandle=0x%lx(0x%lx`%s')\n", | |
739 | (unsigned long)args.phandle, | |
740 | (unsigned long)phandle, | |
741 | (phandle == NULL ? "" : device_name(phandle)))); | |
742 | chirp_write_h2t_args(&args, | |
743 | sizeof(args), | |
744 | data, | |
745 | processor, cia); | |
746 | return 0; | |
747 | } | |
748 | ||
749 | static int | |
750 | chirp_emul_instance_to_path(os_emul_data *data, | |
751 | cpu *processor, | |
752 | unsigned_word cia) | |
753 | { | |
754 | struct instance_to_path_args { | |
755 | /*in*/ | |
756 | unsigned_cell ihandle; | |
757 | unsigned_cell buf; | |
758 | unsigned_cell buflen; | |
759 | /*out*/ | |
760 | unsigned_cell length; | |
761 | } args; | |
762 | device_instance *ihandle; | |
763 | const char *path; | |
764 | int length; | |
765 | /* get the args */ | |
766 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
767 | return -1; | |
768 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
769 | TRACE(trace_os_emul, ("instance-to-path - in - ihandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n", | |
770 | (unsigned long)args.ihandle, | |
771 | (unsigned long)ihandle, | |
772 | ihandle_name(ihandle), | |
773 | (unsigned long)args.buf, | |
774 | (unsigned long)args.buflen)); | |
775 | /* get the devices name */ | |
776 | if (ihandle == NULL) { | |
777 | args.length = -1; | |
778 | path = "(null)"; | |
779 | } | |
780 | else { | |
781 | path = device_instance_path(ihandle); | |
782 | length = strlen(path); | |
783 | if (length >= args.buflen) | |
784 | length = args.buflen - 1; | |
785 | emul_write_buffer(path, args.buf, length, | |
786 | processor, cia); | |
787 | args.length = length; | |
788 | } | |
789 | /* return its phandle */ | |
790 | TRACE(trace_os_emul, ("instance-to-path - out - length=%ld buf=`%s')\n", | |
791 | (unsigned long)args.length, | |
792 | path)); | |
793 | chirp_write_h2t_args(&args, | |
794 | sizeof(args), | |
795 | data, | |
796 | processor, cia); | |
797 | return 0; | |
798 | } | |
799 | ||
800 | static int | |
801 | chirp_emul_package_to_path(os_emul_data *data, | |
802 | cpu *processor, | |
803 | unsigned_word cia) | |
804 | { | |
805 | struct package_to_path_args { | |
806 | /*in*/ | |
807 | unsigned_cell phandle; | |
808 | unsigned_cell buf; | |
809 | unsigned_cell buflen; | |
810 | /*out*/ | |
811 | unsigned_cell length; | |
812 | } args; | |
813 | device *phandle; | |
814 | const char *path; | |
815 | /* get the args */ | |
816 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
817 | return -1; | |
818 | phandle = external_to_device(data->root, args.phandle); | |
819 | TRACE(trace_os_emul, ("package-to-path - in - phandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n", | |
820 | (unsigned long)args.phandle, | |
821 | (unsigned long)phandle, | |
822 | (phandle == NULL ? "" : device_name(phandle)), | |
823 | (unsigned long)args.buf, | |
824 | (unsigned long)args.buflen)); | |
825 | /* get the devices name */ | |
826 | if (phandle == NULL) { | |
827 | args.length = -1; | |
828 | path = "(null)"; | |
829 | } | |
830 | else { | |
831 | int length; | |
832 | path = device_path(phandle); | |
833 | length = strlen(path); | |
834 | if (length >= args.buflen) | |
835 | length = args.buflen - 1; | |
836 | emul_write_buffer(path, args.buf, length, | |
837 | processor, cia); | |
838 | args.length = length; | |
839 | } | |
840 | /* return its phandle */ | |
841 | TRACE(trace_os_emul, ("package-to-path - out - length=%ld buf=`%s')\n", | |
842 | (unsigned long)args.length, | |
843 | path)); | |
844 | chirp_write_h2t_args(&args, | |
845 | sizeof(args), | |
846 | data, | |
847 | processor, cia); | |
848 | return 0; | |
849 | } | |
850 | ||
851 | static int | |
852 | chirp_emul_call_method(os_emul_data *data, | |
853 | cpu *processor, | |
854 | unsigned_word cia) | |
855 | { | |
856 | struct call_method_args { | |
857 | /*in*/ | |
858 | unsigned_cell method; | |
859 | unsigned_cell ihandle; | |
860 | /*in/out*/ | |
861 | unsigned_cell stack[13]; /*6in + 6out + catch */ | |
862 | } args; | |
863 | char method[32]; | |
864 | device_instance *ihandle; | |
865 | /* some useful info about our mini stack */ | |
866 | int n_stack_args; | |
867 | int n_stack_returns; | |
868 | int stack_catch_result; | |
869 | int stack_returns; | |
870 | /* read the args */ | |
871 | if (chirp_read_t2h_args(&args, sizeof(args), -1, -1, data, processor, cia)) | |
872 | return -1; | |
873 | emul_read_string(method, | |
874 | args.method, | |
875 | sizeof(method), | |
876 | processor, cia); | |
877 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
878 | n_stack_args = data->n_args - 2; | |
879 | n_stack_returns = data->n_returns - 1; | |
880 | stack_catch_result = n_stack_args; | |
881 | stack_returns = stack_catch_result + 1; | |
882 | TRACE(trace_os_emul, ("call-method - in - n_args=%ld n_returns=%ld method=`%s' ihandle=0x%lx(0x%lx`%s')\n", | |
883 | (unsigned long)data->n_args, | |
884 | (unsigned long)data->n_returns, | |
885 | method, | |
886 | (unsigned long)args.ihandle, | |
887 | (unsigned long)ihandle, | |
888 | ihandle_name(ihandle))); | |
889 | /* see if we can emulate this method */ | |
890 | if (ihandle == NULL) { | |
891 | /* OpenFirmware doesn't define this error */ | |
892 | error("chirp: invalid ihandle passed to call-method method"); | |
893 | } | |
894 | else { | |
895 | args.stack[stack_catch_result] = | |
896 | device_instance_call_method(ihandle, | |
897 | method, | |
898 | n_stack_args, | |
899 | &args.stack[0], | |
900 | n_stack_returns, | |
901 | &args.stack[stack_returns]); | |
902 | } | |
903 | /* finished */ | |
904 | TRACE(trace_os_emul, ("call-method - out - catch-result=%ld\n", | |
905 | (unsigned long)args.stack[stack_catch_result])); | |
906 | chirp_write_h2t_args(&args, | |
907 | sizeof(args), | |
908 | data, | |
909 | processor, cia); | |
910 | return 0; | |
911 | } | |
912 | ||
913 | ||
914 | /* Device I/O */ | |
915 | ||
916 | static int | |
917 | chirp_emul_open(os_emul_data *data, | |
918 | cpu *processor, | |
919 | unsigned_word cia) | |
920 | { | |
921 | struct open_args { | |
922 | /*in*/ | |
923 | unsigned_cell device_specifier; | |
924 | /*out*/ | |
925 | unsigned_cell ihandle; | |
926 | } args; | |
927 | char device_specifier[1024]; | |
928 | device_instance *ihandle; | |
929 | /* read the args */ | |
930 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
931 | return -1; | |
932 | emul_read_string(device_specifier, | |
933 | args.device_specifier, | |
934 | sizeof(device_specifier), | |
935 | processor, cia); | |
936 | TRACE(trace_os_emul, ("open - in - device_specifier=`%s'\n", | |
937 | device_specifier)); | |
938 | /* open the device */ | |
939 | ihandle = tree_instance(data->root, device_specifier); | |
940 | if (ihandle == NULL) | |
941 | args.ihandle = -1; | |
942 | else | |
943 | args.ihandle = device_instance_to_external(ihandle); | |
944 | /* return the ihandle result */ | |
945 | TRACE(trace_os_emul, ("open - out - ihandle=0x%lx(0x%lx`%s')\n", | |
946 | (unsigned long)args.ihandle, | |
947 | (unsigned long)ihandle, | |
948 | ihandle_name(ihandle))); | |
949 | chirp_write_h2t_args(&args, | |
950 | sizeof(args), | |
951 | data, | |
952 | processor, cia); | |
953 | return 0; | |
954 | } | |
955 | ||
956 | static int | |
957 | chirp_emul_close(os_emul_data *data, | |
958 | cpu *processor, | |
959 | unsigned_word cia) | |
960 | { | |
961 | struct close_args { | |
962 | /*in*/ | |
963 | unsigned_cell ihandle; | |
964 | /*out*/ | |
965 | } args; | |
966 | device_instance *ihandle; | |
967 | /* read the args */ | |
968 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 0, data, processor, cia)) | |
969 | return -1; | |
970 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
971 | TRACE(trace_os_emul, ("close - in - ihandle=0x%lx(0x%lx`%s')\n", | |
972 | (unsigned long)args.ihandle, | |
973 | (unsigned long)ihandle, | |
974 | ihandle_name(ihandle))); | |
975 | /* close the device */ | |
976 | if (ihandle == NULL) { | |
977 | /* OpenFirmware doesn't define this error */ | |
978 | error("chirp: invalid ihandle passed to close method"); | |
979 | } | |
980 | else { | |
981 | device_instance_delete(ihandle); | |
982 | } | |
983 | /* return the ihandle result */ | |
984 | TRACE(trace_os_emul, ("close - out\n")); | |
985 | chirp_write_h2t_args(&args, | |
986 | sizeof(args), | |
987 | data, | |
988 | processor, cia); | |
989 | return 0; | |
990 | } | |
991 | ||
992 | static int | |
993 | chirp_emul_read(os_emul_data *data, | |
994 | cpu *processor, | |
995 | unsigned_word cia) | |
996 | { | |
997 | struct read_args { | |
998 | /*in*/ | |
999 | unsigned_cell ihandle; | |
1000 | unsigned_cell addr; | |
1001 | unsigned_cell len; | |
1002 | /*out*/ | |
1003 | unsigned_cell actual; | |
1004 | } args; | |
1005 | char buf[1024]; | |
1006 | device_instance *ihandle; | |
1007 | /* read the args */ | |
1008 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
1009 | return -1; | |
1010 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
1011 | TRACE(trace_os_emul, ("read - in - ihandle=0x%lx(0x%lx`%s') addr=0x%lx len=%ld\n", | |
1012 | (unsigned long)args.ihandle, | |
1013 | (unsigned long)ihandle, | |
1014 | ihandle_name(ihandle), | |
1015 | (unsigned long)args.addr, | |
1016 | (unsigned long)args.len)); | |
1017 | if (ihandle == NULL) { | |
1018 | /* OpenFirmware doesn't define this error */ | |
1019 | error("chirp: invalid ihandle passed to read method"); | |
1020 | } | |
1021 | else { | |
1022 | /* do the reads */ | |
1023 | int actual = 0; | |
1024 | while (actual < args.len) { | |
1025 | int remaining = args.len - actual; | |
1026 | int to_read = (remaining <= sizeof(buf) ? remaining : sizeof(buf)); | |
1027 | int nr_read = device_instance_read(ihandle, buf, to_read); | |
1028 | if (nr_read < 0) { | |
1029 | actual = nr_read; /* the error */ | |
1030 | break; | |
1031 | } | |
1032 | else if (nr_read == 0) { | |
1033 | break; | |
1034 | } | |
1035 | emul_write_buffer(buf, | |
1036 | args.addr + actual, | |
1037 | nr_read, | |
1038 | processor, cia); | |
1039 | actual += nr_read; | |
1040 | } | |
1041 | if (actual >= 0) { | |
1042 | args.actual = actual; | |
1043 | if (actual < sizeof(buf)) | |
1044 | buf[actual] = '\0'; | |
1045 | else | |
1046 | buf[sizeof(buf) - 1] = '\0'; | |
1047 | } | |
1048 | else { | |
1049 | switch (actual) { | |
1050 | case sim_io_eof: | |
1051 | args.actual = 0; | |
1052 | break; | |
1053 | case sim_io_not_ready: | |
1054 | ASSERT(sim_io_not_ready == -2); | |
1055 | args.actual = sim_io_not_ready; | |
1056 | break; | |
1057 | default: | |
1058 | error("Bad error value %ld", (long)actual); | |
1059 | break; | |
1060 | } | |
1061 | } | |
1062 | } | |
1063 | /* return the result */ | |
1064 | TRACE(trace_os_emul, ("read - out - actual=%ld `%s'\n", | |
1065 | (long)args.actual, | |
1066 | ((args.actual > 0 && args.actual < sizeof(buf)) ? buf : "") | |
1067 | )); | |
1068 | chirp_write_h2t_args(&args, | |
1069 | sizeof(args), | |
1070 | data, | |
1071 | processor, cia); | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | static int | |
1076 | chirp_emul_write(os_emul_data *data, | |
1077 | cpu *processor, | |
1078 | unsigned_word cia) | |
1079 | { | |
1080 | struct write_args { | |
1081 | /*in*/ | |
1082 | unsigned_cell ihandle; | |
1083 | unsigned_cell addr; | |
1084 | unsigned_cell len; | |
1085 | /*out*/ | |
1086 | unsigned_cell actual; | |
1087 | } args; | |
1088 | char buf[1024]; | |
1089 | device_instance *ihandle; | |
1090 | int actual; | |
1091 | /* get the args */ | |
1092 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
1093 | return -1; | |
1094 | actual = args.len; | |
1095 | if (actual >= sizeof(buf)) | |
1096 | actual = sizeof(buf) - 1; | |
1097 | emul_read_buffer(buf, | |
1098 | args.addr, | |
1099 | actual, | |
1100 | processor, cia); | |
1101 | buf[actual] = '\0'; | |
1102 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
1103 | TRACE(trace_os_emul, ("write - in - ihandle=0x%lx(0x%lx`%s') `%s' (%ld)\n", | |
1104 | (unsigned long)args.ihandle, | |
1105 | (unsigned long)ihandle, | |
1106 | ihandle_name(ihandle), | |
1107 | buf, (long)actual)); | |
1108 | if (ihandle == NULL) { | |
1109 | /* OpenFirmware doesn't define this error */ | |
1110 | error("chirp: invalid ihandle passed to write method"); | |
1111 | } | |
1112 | else { | |
1113 | /* write it out */ | |
1114 | actual = device_instance_write(ihandle, buf, actual); | |
1115 | if (actual < 0) | |
1116 | args.actual = 0; | |
1117 | else | |
1118 | args.actual = actual; | |
1119 | } | |
1120 | /* return the result */ | |
1121 | TRACE(trace_os_emul, ("write - out - actual=%ld\n", | |
1122 | (long)args.actual)); | |
1123 | chirp_write_h2t_args(&args, | |
1124 | sizeof(args), | |
1125 | data, | |
1126 | processor, cia); | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | static int | |
1131 | chirp_emul_seek(os_emul_data *data, | |
1132 | cpu *processor, | |
1133 | unsigned_word cia) | |
1134 | { | |
1135 | struct seek_args { | |
1136 | /*in*/ | |
1137 | unsigned_cell ihandle; | |
1138 | unsigned_cell pos_hi; | |
1139 | unsigned_cell pos_lo; | |
1140 | /*out*/ | |
1141 | unsigned_cell status; | |
1142 | } args; | |
1143 | int status; | |
1144 | device_instance *ihandle; | |
1145 | /* get the args */ | |
1146 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
1147 | return -1; | |
1148 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
1149 | TRACE(trace_os_emul, ("seek - in - ihandle=0x%lx(0x%lx`%s') pos.hi=0x%lx pos.lo=0x%lx\n", | |
1150 | (unsigned long)args.ihandle, | |
1151 | (unsigned long)ihandle, | |
1152 | ihandle_name(ihandle), | |
1153 | args.pos_hi, args.pos_lo)); | |
1154 | if (ihandle == NULL) { | |
1155 | /* OpenFirmware doesn't define this error */ | |
1156 | error("chirp: invalid ihandle passed to seek method"); | |
1157 | } | |
1158 | else { | |
1159 | /* seek it out */ | |
1160 | status = device_instance_seek(ihandle, args.pos_hi, args.pos_lo); | |
1161 | args.status = status; | |
1162 | } | |
1163 | /* return the result */ | |
1164 | TRACE(trace_os_emul, ("seek - out - status=%ld\n", | |
1165 | (long)args.status)); | |
1166 | chirp_write_h2t_args(&args, | |
1167 | sizeof(args), | |
1168 | data, | |
1169 | processor, cia); | |
1170 | return 0; | |
1171 | } | |
1172 | ||
1173 | ||
1174 | /* memory */ | |
1175 | ||
1176 | static int | |
1177 | chirp_emul_claim(os_emul_data *data, | |
1178 | cpu *processor, | |
1179 | unsigned_word cia) | |
1180 | { | |
1181 | /* NOTE: the client interface claim routine is *very* different to | |
1182 | the "claim" method described in IEEE-1275 appendix A. The latter | |
1183 | uses real addresses while this uses virtual (effective) | |
1184 | addresses. */ | |
1185 | struct claim_args { | |
1186 | /* in */ | |
1187 | unsigned_cell virt; | |
1188 | unsigned_cell size; | |
1189 | unsigned_cell align; | |
1190 | /* out */ | |
1191 | unsigned_cell baseaddr; | |
1192 | } args; | |
1193 | /* read the args */ | |
1194 | if (chirp_read_t2h_args(&args, sizeof(args), | |
1195 | 3 /*n_args*/, 1 /*n_returns*/, | |
1196 | data, processor, cia)) | |
1197 | return -1; | |
1198 | TRACE(trace_os_emul, ("claim - in - virt=0x%lx size=%ld align=%d\n", | |
1199 | (unsigned long)args.virt, | |
1200 | (long int)args.size, | |
1201 | (int)args.align)); | |
1202 | /* use the memory device to allocate (real) memory at the requested | |
1203 | address */ | |
1204 | { | |
1205 | device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory"); | |
1206 | unsigned_cell mem_in[3]; | |
1207 | unsigned_cell mem_out[1]; | |
1208 | mem_in[0] = args.align; /*top-of-stack*/ | |
1209 | mem_in[1] = args.size; | |
1210 | mem_in[2] = args.virt; | |
1211 | if (device_instance_call_method(memory, "claim", | |
1212 | 3, mem_in, 1, mem_out) < 0) | |
1213 | error("chirp: claim failed to allocate memory virt=0x%lx size=%ld align=%d", | |
1214 | (unsigned long)args.virt, | |
1215 | (long int)args.size, | |
1216 | (int)args.align); | |
1217 | args.baseaddr = mem_out[0]; | |
1218 | } | |
1219 | /* if using virtual addresses, create a 1-1 map of this address space */ | |
1220 | if (!data->real_mode) { | |
1221 | error("chirp: claim method does not support virtual mode"); | |
1222 | } | |
1223 | /* return the base address */ | |
1224 | TRACE(trace_os_emul, ("claim - out - baseaddr=0x%lx\n", | |
1225 | (unsigned long)args.baseaddr)); | |
1226 | chirp_write_h2t_args(&args, | |
1227 | sizeof(args), | |
1228 | data, | |
1229 | processor, cia); | |
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | static int | |
1234 | chirp_emul_release(os_emul_data *data, | |
1235 | cpu *processor, | |
1236 | unsigned_word cia) | |
1237 | { | |
1238 | /* NOTE: the client interface release routine is *very* different to | |
1239 | the "claim" method described in IEEE-1275 appendix A. The latter | |
1240 | uses real addresses while this uses virtual (effective) | |
1241 | addresses. */ | |
1242 | struct claim_args { | |
1243 | /* in */ | |
1244 | unsigned_cell virt; | |
1245 | unsigned_cell size; | |
1246 | /* out */ | |
1247 | } args; | |
1248 | /* read the args */ | |
1249 | if (chirp_read_t2h_args(&args, sizeof(args), | |
1250 | 2 /*n_args*/, 0 /*n_returns*/, | |
1251 | data, processor, cia)) | |
1252 | return -1; | |
1253 | TRACE(trace_os_emul, ("release - in - virt=0x%lx size=%ld\n", | |
1254 | (unsigned long)args.virt, | |
1255 | (long int)args.size)); | |
1256 | /* use the memory device to release (real) memory at the requested | |
1257 | address */ | |
1258 | { | |
1259 | device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory"); | |
1260 | unsigned_cell mem_in[2]; | |
1261 | mem_in[0] = args.size; | |
1262 | mem_in[1] = args.virt; | |
1263 | if (device_instance_call_method(memory, "release", | |
1264 | 2, mem_in, 0, NULL) < 0) | |
1265 | error("chirp: claim failed to release memory virt=0x%lx size=%ld", | |
1266 | (unsigned long)args.virt, | |
1267 | (long int)args.size); | |
1268 | } | |
1269 | /* if using virtual addresses, remove the 1-1 map of this address space */ | |
1270 | if (!data->real_mode) { | |
1271 | error("chirp: release method does not support virtual mode"); | |
1272 | } | |
1273 | /* return the base address */ | |
1274 | TRACE(trace_os_emul, ("release - out\n")); | |
1275 | chirp_write_h2t_args(&args, | |
1276 | sizeof(args), | |
1277 | data, | |
1278 | processor, cia); | |
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | ||
1283 | /* Control transfer */ | |
1284 | ||
1285 | static int | |
1286 | chirp_emul_boot(os_emul_data *data, | |
1287 | cpu *processor, | |
1288 | unsigned_word cia) | |
1289 | { | |
1290 | /* unlike OpenFirmware this one can take an argument */ | |
1291 | struct boot_args { | |
1292 | /*in*/ | |
1293 | unsigned_cell bootspec; | |
1294 | /*out*/ | |
1295 | } args; | |
1296 | char bootspec[1024]; | |
1297 | /* read in the arguments */ | |
1298 | if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia)) | |
1299 | cpu_halt(processor, cia, was_exited, -1); | |
1300 | if (args.bootspec != 0) | |
1301 | emul_read_string(bootspec, args.bootspec, sizeof(bootspec), | |
1302 | processor, cia); | |
1303 | else | |
1304 | strcpy(bootspec, "(null)"); | |
1305 | TRACE(trace_os_emul, ("boot - in bootspec=`%s'\n", bootspec)); | |
1306 | /* just report this and exit */ | |
1307 | printf_filtered("chrp: boot %s called, exiting.\n", bootspec); | |
1308 | cpu_halt(processor, cia, was_exited, 0); | |
1309 | return 0; | |
1310 | } | |
1311 | ||
1312 | static int | |
1313 | chirp_emul_enter(os_emul_data *data, | |
1314 | cpu *processor, | |
1315 | unsigned_word cia) | |
1316 | { | |
1317 | error("chirp: enter method not implemented\n"); | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | static int | |
1322 | chirp_emul_exit(os_emul_data *data, | |
1323 | cpu *processor, | |
1324 | unsigned_word cia) | |
1325 | { | |
1326 | /* unlike OpenBoot this one can take an argument */ | |
1327 | struct exit_args { | |
1328 | /*in*/ | |
1329 | signed_cell status; | |
1330 | /*out*/ | |
1331 | } args; | |
1332 | if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia)) | |
1333 | cpu_halt(processor, cia, was_exited, -1); | |
1334 | cpu_halt(processor, cia, was_exited, args.status); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | static int | |
1339 | chirp_emul_chain(os_emul_data *data, | |
1340 | cpu *processor, | |
1341 | unsigned_word cia) | |
1342 | { | |
1343 | error("chirp: chain method not implemented\n"); | |
1344 | return 0; | |
1345 | } | |
1346 | ||
1347 | ||
1348 | /* user interface */ | |
1349 | ||
1350 | static int | |
1351 | chirp_emul_interpret(os_emul_data *data, | |
1352 | cpu *processor, | |
1353 | unsigned_word cia) | |
1354 | { | |
1355 | error("chirp: interpret method not implemented\n"); | |
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | static int | |
1360 | chirp_emul_set_callback(os_emul_data *data, | |
1361 | cpu *processor, | |
1362 | unsigned_word cia) | |
1363 | { | |
1364 | error("chirp: set_callback method not implemented\n"); | |
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | static int | |
1369 | chirp_emul_set_symbol_lookup(os_emul_data *data, | |
1370 | cpu *processor, | |
1371 | unsigned_word cia) | |
1372 | { | |
1373 | error("chirp: set_symbol_lookup method not implemented\n"); | |
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | ||
1378 | /* Time */ | |
1379 | ||
1380 | static int | |
1381 | chirp_emul_milliseconds(os_emul_data *data, | |
1382 | cpu *processor, | |
1383 | unsigned_word cia) | |
1384 | { | |
1385 | struct test_args { | |
1386 | /*in*/ | |
1387 | /*out*/ | |
1388 | unsigned_cell ms; | |
1389 | } args; | |
1390 | unsigned64 time; | |
1391 | /* read in the arguments */ | |
1392 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
1393 | return -1; | |
1394 | /* make up a number */ | |
1395 | time = event_queue_time(psim_event_queue(cpu_system(processor))) / 1000000; | |
1396 | args.ms = time; | |
1397 | /* write the arguments back out */ | |
1398 | TRACE(trace_os_emul, ("milliseconds - out - ms=%ld\n", | |
1399 | (unsigned long)args.ms)); | |
1400 | chirp_write_h2t_args(&args, | |
1401 | sizeof(args), | |
1402 | data, | |
1403 | processor, cia); | |
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | ||
1408 | ||
1409 | ||
1410 | static chirp_services services[] = { | |
1411 | ||
1412 | /* client interface */ | |
1413 | { "test", chirp_emul_test }, | |
1414 | ||
1415 | /* device tree */ | |
1416 | { "peer", chirp_emul_peer }, | |
1417 | { "child", chirp_emul_child }, | |
1418 | { "parent", chirp_emul_parent }, | |
1419 | { "instance-to-package", chirp_emul_instance_to_package }, | |
1420 | { "getproplen", chirp_emul_getproplen }, | |
1421 | { "getprop", chirp_emul_getprop }, | |
1422 | { "nextprop", chirp_emul_nextprop }, | |
1423 | /* { "setprop", chirp_emul_setprop }, */ | |
1424 | { "canon", chirp_emul_canon }, | |
1425 | { "finddevice", chirp_emul_finddevice }, | |
1426 | { "instance-to-path", chirp_emul_instance_to_path }, | |
1427 | { "package-to-path", chirp_emul_package_to_path }, | |
1428 | { "call-method", chirp_emul_call_method }, | |
1429 | ||
1430 | /* device I/O */ | |
1431 | { "open", chirp_emul_open }, | |
1432 | { "close", chirp_emul_close }, | |
1433 | { "read", chirp_emul_read }, | |
1434 | { "write", chirp_emul_write }, | |
1435 | { "seek", chirp_emul_seek }, | |
1436 | { "write", chirp_emul_write }, | |
1437 | ||
1438 | /* memory */ | |
1439 | { "claim", chirp_emul_claim }, | |
1440 | { "release", chirp_emul_release }, | |
1441 | ||
1442 | /* control transfer */ | |
1443 | { "boot", chirp_emul_boot }, | |
1444 | { "enter", chirp_emul_enter }, | |
1445 | { "exit", chirp_emul_exit }, | |
1446 | { "chain", chirp_emul_chain }, | |
1447 | ||
1448 | /* user interface */ | |
1449 | { "interpret", chirp_emul_interpret }, | |
1450 | { "set_callback", chirp_emul_set_callback }, | |
1451 | { "set_symbol_lookup", chirp_emul_set_symbol_lookup }, | |
1452 | ||
1453 | /* time */ | |
1454 | { "milliseconds", chirp_emul_milliseconds }, | |
1455 | ||
1456 | { 0, /* sentinal */ }, | |
1457 | }; | |
1458 | ||
1459 | ||
1460 | /* main handlers */ | |
1461 | ||
1462 | /* Any starting address greater than this is assumed to be an Chirp | |
1463 | rather than VEA */ | |
1464 | ||
1465 | #ifndef CHIRP_START_ADDRESS | |
1466 | #define CHIRP_START_ADDRESS 0x80000000 | |
1467 | #endif | |
1468 | #ifndef CHIRP_LOAD_BASE | |
1469 | #define CHIRP_LOAD_BASE -1 | |
1470 | #endif | |
1471 | ||
1472 | ||
1473 | typedef struct _chirp_note_desc { | |
1474 | signed32 real_mode; | |
1475 | signed32 real_base; | |
1476 | signed32 real_size; | |
1477 | signed32 virt_base; | |
1478 | signed32 virt_size; | |
1479 | signed32 load_base; | |
1480 | } chirp_note_desc; | |
1481 | ||
1482 | typedef enum { | |
1483 | note_missing, | |
1484 | note_found, | |
1485 | note_correct, | |
1486 | } note_found_status; | |
1487 | typedef struct _chirp_note { | |
1488 | chirp_note_desc desc; | |
1489 | note_found_status found; | |
1490 | } chirp_note; | |
1491 | ||
1492 | typedef struct _chirp_note_head { | |
1493 | unsigned32 namesz; | |
1494 | unsigned32 descsz; | |
1495 | unsigned32 type; | |
1496 | } chirp_note_head; | |
1497 | ||
1498 | static void | |
1499 | map_over_chirp_note(bfd *image, | |
1500 | asection *sect, | |
1501 | PTR obj) | |
1502 | { | |
1503 | chirp_note *note = (chirp_note*)obj; | |
1504 | if (strcmp(sect->name, ".note") == 0) { | |
1505 | chirp_note_head head; | |
1506 | char name[16]; | |
1507 | /* check the head */ | |
1508 | if (!bfd_get_section_contents(image, sect, | |
1509 | &head, 0, sizeof(head))) | |
1510 | return; | |
1511 | head.namesz = bfd_get_32(image, (void*)&head.namesz); | |
1512 | head.descsz = bfd_get_32(image, (void*)&head.descsz); | |
1513 | head.type = bfd_get_32(image, (void*)&head.type); | |
1514 | if (head.type != 0x1275) | |
1515 | return; | |
1516 | /* check the name field */ | |
1517 | if (head.namesz > sizeof(name)) { | |
1518 | error("chirp: note name too long (%d > %d)\n", (int)head.namesz, sizeof(name)); | |
1519 | } | |
1520 | if (!bfd_get_section_contents(image, sect, | |
1521 | name, sizeof(head), head.namesz)) { | |
1522 | error("chirp: note name unreadable\n"); | |
1523 | } | |
1524 | if (strcmp(name, "PowerPC") != 0) { | |
1525 | printf_filtered("chirp: note name (%s) not `PowerPC'\n", name); | |
1526 | } | |
1527 | /* check the size */ | |
1528 | if (head.descsz == sizeof(note->desc) - sizeof(signed32)) { | |
1529 | sim_io_printf_filtered("chirp: note descriptor missing load-base\n"); | |
1530 | } | |
1531 | else if (head.descsz != sizeof(note->desc)) { | |
1532 | sim_io_printf_filtered("chirp: note descriptor of wrong size\n"); | |
1533 | note->found = note_found; | |
1534 | return; | |
1535 | } | |
1536 | note->found = note_correct; | |
1537 | /* get the contents */ | |
1538 | if (!bfd_get_section_contents(image, sect, | |
1539 | ¬e->desc, /* page align start */ | |
1540 | ((sizeof(head) + head.namesz) + 3) & ~3, | |
1541 | head.descsz)) { | |
1542 | error("chirp: note descriptor unreadable\n"); | |
1543 | } | |
1544 | note->desc.real_mode = bfd_get_32(image, (void*)¬e->desc.real_mode); | |
1545 | note->desc.real_base = bfd_get_32(image, (void*)¬e->desc.real_base); | |
1546 | note->desc.real_size = bfd_get_32(image, (void*)¬e->desc.real_size); | |
1547 | note->desc.virt_base = bfd_get_32(image, (void*)¬e->desc.virt_base); | |
1548 | note->desc.virt_size = bfd_get_32(image, (void*)¬e->desc.virt_size); | |
1549 | if (head.descsz == sizeof(note->desc)) | |
1550 | note->desc.load_base = bfd_get_32(image, (void*)¬e->desc.load_base); | |
1551 | else | |
560ba567 | 1552 | note->desc.load_base = (signed32)-1; |
c906108c SS |
1553 | } |
1554 | } | |
1555 | ||
1556 | ||
1557 | static os_emul_data * | |
1558 | emul_chirp_create(device *root, | |
1559 | bfd *image, | |
1560 | const char *name) | |
1561 | { | |
1562 | os_emul_data *chirp; | |
1563 | device *node; | |
1564 | chirp_note note; | |
1565 | int i; | |
1566 | ||
1567 | /* Sanity check that this really is the chosen emulation */ | |
1568 | if (name == NULL && image == NULL) | |
1569 | return NULL; | |
1570 | if (name != NULL | |
1571 | && strcmp(name, "ob") != 0 | |
1572 | && strcmp(name, "ieee1274") != 0 | |
1573 | && strcmp(name, "chrp") != 0 | |
1574 | && strcmp(name, "chirp") != 0 | |
1575 | && strcmp(name, "openboot") != 0) | |
1576 | return NULL; | |
1577 | ||
1578 | /* look for an elf note section, enter its values into the device tree */ | |
1579 | memset(¬e, 0, sizeof(note)); | |
1580 | if (image != NULL) | |
1581 | bfd_map_over_sections(image, map_over_chirp_note, ¬e); | |
1582 | if (name == NULL && image != NULL && note.found == note_missing) | |
1583 | return NULL; | |
1584 | ||
1585 | /* Assume that it is a chirp emulation */ | |
1586 | ||
1587 | chirp = ZALLOC(os_emul_data); | |
1588 | chirp->root = root; | |
1589 | chirp->services = services; | |
1590 | ||
1591 | /* the root node */ | |
1592 | tree_parse(root, "/name \"gpl,clayton"); | |
1593 | ||
1594 | /* default options */ | |
1595 | emul_add_tree_options(root, image, "chirp", "oea", | |
1596 | 0 /*oea-interrupt-prefix*/); | |
1597 | ||
1598 | /* hardware */ | |
1599 | emul_add_tree_hardware(root); | |
1600 | ||
1601 | /* basic information */ | |
1602 | chirp->memory_size | |
1603 | = tree_find_integer_property(root, "/openprom/options/oea-memory-size"); | |
1604 | chirp->little_endian | |
1605 | = tree_find_boolean_property(root, "/options/little-endian?"); | |
1606 | chirp->floating_point_available | |
1607 | = tree_find_boolean_property(root, "/openprom/options/floating-point?"); | |
1608 | chirp->interrupt_prefix = | |
1609 | tree_find_integer_property(root, "/openprom/options/oea-interrupt-prefix"); | |
1610 | ||
1611 | ||
1612 | /* Perform an interum layout of the openboot firmware in memory */ | |
1613 | ||
1614 | ||
1615 | /* a page for firmware calls */ | |
1616 | chirp->sizeof_code = 4096; | |
1617 | chirp->code_offset = 0x4000; /* possible space for interrupt table */ | |
1618 | ||
1619 | /* the stack */ | |
1620 | chirp->sizeof_stack = 32 * 1024; | |
1621 | chirp->stack_offset = chirp->code_offset + chirp->sizeof_code; | |
1622 | ||
1623 | /* the hash table */ | |
1624 | if (!note.desc.real_mode) { | |
1625 | chirp->nr_page_table_entry_groups = (chirp->memory_size < 0x800000 | |
1626 | ? 1024 /* min allowed */ | |
1627 | : (chirp->memory_size / 4096 / 2)); | |
1628 | chirp->sizeof_htab = chirp->nr_page_table_entry_groups * 64; | |
1629 | } | |
1630 | chirp->htab_offset = chirp->stack_offset + chirp->sizeof_stack; | |
1631 | ||
1632 | /* the actual amount of space needed */ | |
1633 | chirp->real_size = chirp->htab_offset + chirp->sizeof_htab; | |
1634 | ||
1635 | ||
1636 | /* now go through and see if it fits in what is available */ | |
1637 | ||
1638 | ||
1639 | /* resolve real-mode? */ | |
1640 | if (note.found == note_correct) | |
1641 | chirp->real_mode = note.desc.real_mode; | |
1642 | else if (tree_find_property(root, "/options/real-mode?") != NULL) | |
1643 | chirp->real_mode = tree_find_boolean_property(root, "/options/real-mode?"); | |
1644 | else | |
1645 | chirp->real_mode = 0; | |
1646 | if (tree_find_property(root, "/options/real-mode?") != NULL) { | |
1647 | if (!chirp->real_mode | |
1648 | != !tree_find_boolean_property(root, "/options/real-mode?")) | |
1649 | error("chirp: /options/real-mode? conflicts with note section\n"); | |
1650 | } | |
1651 | else | |
1652 | tree_parse(root, "/options/real-mode? %s", | |
1653 | chirp->real_mode ? "true" : "false"); | |
1654 | ||
1655 | /* resolve real-base */ | |
1656 | if (note.found == note_correct | |
1657 | && note.desc.real_base != (signed32)-1) | |
1658 | chirp->real_base = note.desc.real_base; | |
1659 | else if (tree_find_property(root, "/options/real-base") != NULL) | |
1660 | chirp->real_base = tree_find_integer_property(root, "/options/real-base"); | |
1661 | else | |
1662 | chirp->real_base = chirp->memory_size - chirp->real_size; | |
1663 | if (tree_find_property(root, "/options/real-base") != NULL) { | |
1664 | if (chirp->real_base != tree_find_integer_property(root, "/options/real-base")) | |
1665 | error("chirp: /options/real-base conflicts with note section\n"); | |
1666 | } | |
1667 | else | |
1668 | tree_parse(root, "/options/real-base 0x%lx", | |
1669 | (unsigned long)chirp->real_base); | |
1670 | ||
1671 | /* resolve real-size */ | |
1672 | if (note.found == note_correct | |
1673 | && note.desc.real_size != (signed32)-1 | |
1674 | && note.desc.real_size != 0 | |
1675 | && chirp->real_size > note.desc.real_size) | |
1676 | error("chirp: insufficient physical memory for firmware\n"); | |
1677 | if (tree_find_property(root, "/options/real-size") != NULL) { | |
1678 | if (chirp->real_size > tree_find_integer_property(root, "/options/real-size")) | |
1679 | error("chirp: /options/real-size conflicts with note section\n"); | |
1680 | } | |
1681 | else | |
1682 | tree_parse(root, "/options/real-size 0x%lx", | |
1683 | (unsigned long)chirp->real_size); | |
1684 | ||
1685 | /* resolve virt-base */ | |
1686 | if (chirp->real_mode) | |
1687 | chirp->virt_base = chirp->real_base; | |
1688 | else if (note.found == note_correct && note.desc.virt_base != -1) | |
1689 | chirp->virt_base = note.desc.virt_base; | |
1690 | else if (tree_find_property(root, "/options/virt-base") != NULL) | |
1691 | chirp->virt_base = tree_find_integer_property(root, "/options/virt-base"); | |
1692 | else | |
1693 | chirp->virt_base = CHIRP_START_ADDRESS; | |
1694 | if (tree_find_property(root, "/options/virt-base") != NULL) { | |
1695 | unsigned_word virt_base = tree_find_integer_property(root, "/options/virt-base"); | |
1696 | if (virt_base != -1 && chirp->virt_base != virt_base) | |
1697 | error("chirp: /options/virt-base conflicts with note section\n"); | |
1698 | } | |
1699 | else | |
1700 | tree_parse(root, "/options/virt-base 0x%lx", | |
1701 | chirp->real_mode ? -1 : (unsigned long)chirp->virt_base); | |
1702 | ||
1703 | /* resolve virt-size */ | |
1704 | chirp->virt_size = chirp->real_size; | |
1705 | if (note.found == note_correct | |
1706 | && note.desc.virt_size != (signed32)-1 | |
1707 | && note.desc.virt_size != 0 | |
1708 | && !chirp->real_mode | |
1709 | && chirp->virt_size > note.desc.virt_size) | |
1710 | error("chirp: insufficent virtual memory for firmware\n"); | |
1711 | if (tree_find_property(root, "/options/virt-size") != NULL) { | |
1712 | if (chirp->virt_size > tree_find_integer_property(root, "/options/virt-size")) | |
1713 | error("chirp: /options/virt-size conflicts with note section\n"); | |
1714 | } | |
1715 | else | |
1716 | tree_parse(root, "/options/virt-size 0x%lx", | |
1717 | chirp->real_mode ? -1 : (unsigned long)chirp->virt_size); | |
1718 | ||
1719 | /* resolve load-base */ | |
1720 | if (note.found == note_correct | |
1721 | && note.desc.load_base != (signed32)-1) | |
1722 | chirp->load_base = note.desc.load_base; | |
1723 | else if (tree_find_property(root, "/options/load-base") != NULL) | |
1724 | chirp->load_base = tree_find_integer_property(root, "/options/load-base"); | |
1725 | else | |
1726 | chirp->load_base = CHIRP_LOAD_BASE; | |
1727 | if (tree_find_property(root, "/options/load-base") != NULL) { | |
1728 | if (chirp->load_base != tree_find_integer_property(root, "/options/load-base")) | |
1729 | error("chirp: /options/load-base conflicts with note section\n"); | |
1730 | } | |
1731 | else | |
1732 | tree_parse(root, "/options/load-base 0x%lx", | |
1733 | (unsigned long)chirp->load_base); | |
1734 | ||
1735 | /* now adjust the preliminary firmware addresses to final values */ | |
1736 | chirp->code_ra = chirp->code_offset + chirp->real_base; | |
1737 | chirp->stack_ra = chirp->stack_offset + chirp->real_base; | |
1738 | chirp->htab_ra = chirp->htab_offset + chirp->real_base; | |
1739 | ||
1740 | /* the virtual addresses. In real mode these are real addresses. */ | |
1741 | ||
1742 | chirp->code_va = chirp->code_offset + chirp->virt_base; | |
1743 | chirp->stack_va = chirp->stack_offset + chirp->virt_base; | |
1744 | chirp->htab_va = chirp->htab_offset + chirp->virt_base; | |
1745 | ||
1746 | chirp->code_client_va = chirp->code_va; | |
1747 | chirp->code_client_ra = chirp->code_ra; | |
1748 | ||
1749 | chirp->code_callback_va = chirp->code_client_va + 16; | |
1750 | chirp->code_callback_ra = chirp->code_client_ra + 16; | |
1751 | ||
1752 | chirp->code_loop_va = chirp->code_callback_va + 16; | |
1753 | chirp->code_loop_ra = chirp->code_callback_ra + 16; | |
1754 | ||
1755 | /* initialization */ | |
1756 | ||
1757 | tree_parse(root, "/openprom/init"); | |
1758 | tree_parse(root, "/openprom/init/register"); | |
1759 | tree_parse(root, "/openprom/init/register/0.pc 0x%lx", | |
1760 | (unsigned long)bfd_get_start_address(image)); | |
1761 | tree_parse(root, "/openprom/init/register/pc 0x%lx", | |
1762 | (unsigned long)chirp->code_loop_va); | |
1763 | tree_parse(root, "/openprom/init/register/msr 0x%x", | |
1764 | (msr_machine_check_enable | |
1765 | | (chirp->real_mode | |
1766 | ? 0 | |
1767 | : (msr_instruction_relocate | |
1768 | | msr_data_relocate)) | |
1769 | | (chirp->little_endian | |
1770 | ? (msr_little_endian_mode | |
1771 | | msr_interrupt_little_endian_mode) | |
1772 | : 0) | |
1773 | | (chirp->floating_point_available | |
1774 | ? msr_floating_point_available | |
1775 | : 0) | |
1776 | | (chirp->interrupt_prefix | |
1777 | ? msr_interrupt_prefix | |
1778 | : 0) | |
1779 | )); | |
1780 | tree_parse(root, "/openprom/init/register/sdr1 0x%lx", | |
1781 | (unsigned long)(chirp->htab_ra | |
1782 | | MASK32(16, 22) | |
1783 | | ((chirp->sizeof_htab - 1) >> 16))); | |
1784 | /* make certain that the segment registers map straight through */ | |
1785 | for (i = 0; i < 16; i++) { | |
1786 | tree_parse(root, "/openprom/init/register/sr%d 0x%lx", | |
1787 | i, (unsigned long)i); | |
1788 | } | |
1789 | ||
1790 | /* establish an initial state for all processors */ | |
1791 | ||
1792 | ||
1793 | /* the client interface address */ | |
1794 | tree_parse(root, "/openprom/init/register/r5 0x%lx", | |
1795 | (unsigned long)chirp->code_client_va); | |
1796 | /* a stack */ | |
1797 | tree_parse(root, "/openprom/init/register/sp 0x%lx", | |
1798 | (unsigned long)(chirp->stack_va + chirp->sizeof_stack - 16)); | |
1799 | /* in chrp mode any arguments end up being concatinated */ | |
1800 | tree_parse(root, "/openprom/init/stack/stack-type chirp"); | |
1801 | ||
1802 | ||
1803 | /* client interface - emul-call followed by return instruction */ | |
1804 | ||
1805 | ||
1806 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1807 | (unsigned long)chirp->code_client_ra); | |
1808 | tree_parse(node, "./psim,description \"client-interface instruction"); | |
1809 | tree_parse(node, "./real-address 0x%lx", | |
1810 | (unsigned long)chirp->code_client_ra); | |
1811 | tree_parse(node, "./data 0x%lx", | |
1812 | (unsigned long)emul_call_instruction); | |
1813 | ||
1814 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1815 | (unsigned long)(chirp->code_client_ra + 4)); | |
1816 | tree_parse(node, "./psim,description \"client-interface return instruction"); | |
1817 | tree_parse(node, "./real-address 0x%lx", | |
1818 | (unsigned long)(chirp->code_client_ra + 4)); | |
1819 | tree_parse(node, "./data 0x%lx", | |
1820 | (unsigned long)emul_blr_instruction); | |
1821 | ||
1822 | ||
1823 | /* return address for client callbacks - an emul-call instruction | |
1824 | that is again followed by a return instruction */ | |
1825 | ||
1826 | ||
1827 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1828 | (unsigned long)chirp->code_callback_ra); | |
1829 | tree_parse(node, "./psim,description \"client-callback instruction"); | |
1830 | tree_parse(node, "./real-address 0x%lx", | |
1831 | (unsigned long)chirp->code_callback_ra); | |
1832 | tree_parse(node, "./data 0x%lx", | |
1833 | (unsigned long)emul_call_instruction); | |
1834 | ||
1835 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1836 | (unsigned long)(chirp->code_callback_ra + 4)); | |
1837 | tree_parse(node, "./psim,description \"client-callback return instruction"); | |
1838 | tree_parse(node, "./real-address 0x%lx", | |
1839 | (unsigned long)(chirp->code_callback_ra + 4)); | |
1840 | tree_parse(node, "./data 0x%lx", | |
1841 | (unsigned long)emul_blr_instruction); | |
1842 | ||
1843 | /* loop to keep other processors busy */ | |
1844 | ||
1845 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1846 | (unsigned long)chirp->code_loop_ra); | |
1847 | tree_parse(node, "./psim,description \"processor busy loop"); | |
1848 | tree_parse(node, "./real-address 0x%lx", | |
1849 | (unsigned long)chirp->code_loop_ra); | |
1850 | tree_parse(node, "./data 0x%lx", | |
1851 | (unsigned long)emul_loop_instruction); | |
1852 | ||
1853 | /* hash table */ | |
1854 | ||
1855 | /* create a hash table */ | |
1856 | ||
1857 | if (!chirp->real_mode) { | |
1858 | node = tree_parse(root, "/openprom/init/htab@0x%lx", | |
1859 | (unsigned long)chirp->htab_ra); | |
1860 | tree_parse(node, "./claim 0"); | |
1861 | tree_parse(node, "./real-address 0x%lx", | |
1862 | (unsigned long)chirp->htab_ra); | |
1863 | tree_parse(node, "./nr-bytes 0x%lx", | |
1864 | (unsigned long)chirp->sizeof_htab); | |
1865 | } | |
1866 | ||
1867 | /* map in the stack */ | |
1868 | ||
1869 | if (!chirp->real_mode) { | |
1870 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1871 | (unsigned long)chirp->stack_ra); | |
1872 | tree_parse(node, "./psim,description \"map in the stack"); | |
1873 | tree_parse(node, "./claim 1"); | |
1874 | tree_parse(node, "./virtual-address 0x%lx", | |
1875 | (unsigned long)chirp->stack_va); | |
1876 | tree_parse(node, "./real-address 0x%lx", | |
1877 | (unsigned long)chirp->stack_ra); | |
1878 | tree_parse(node, "./nr-bytes 0x%lx", | |
1879 | (unsigned long)chirp->sizeof_stack); | |
1880 | tree_parse(node, "./wimg %d", 0x7); | |
1881 | tree_parse(node, "./pp %d", 0x2); | |
1882 | } | |
1883 | ||
1884 | /* map in the chrp openboot callback code */ | |
1885 | ||
1886 | if (!chirp->real_mode) { | |
1887 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1888 | (unsigned long)chirp->code_ra); | |
1889 | tree_parse(node, "./psim,description \"map in chrp openboot callback code"); | |
1890 | tree_parse(node, "./claim 1"); | |
1891 | tree_parse(node, "./virtual-address 0x%lx", | |
1892 | (unsigned long)chirp->code_va); | |
1893 | tree_parse(node, "./real-address 0x%lx", | |
1894 | (unsigned long)chirp->code_ra); | |
1895 | tree_parse(node, "./nr-bytes 0x%lx", | |
1896 | (unsigned long)chirp->sizeof_code); | |
1897 | tree_parse(node, "./wimg %d", 0x7); | |
1898 | tree_parse(node, "./pp %d", 0x2); | |
1899 | } | |
1900 | ||
1901 | /* map in the program to run */ | |
1902 | ||
1903 | if (chirp->real_mode) { | |
1904 | node = tree_parse(node, "/openprom/init/load-binary"); | |
1905 | tree_parse(node, "./psim,description \"load the binary"); | |
1906 | tree_parse(node, "./file-name %s", bfd_get_filename(image)); | |
1907 | tree_parse(node, "./claim 1"); | |
1908 | } | |
1909 | else { | |
1910 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1911 | (unsigned long)chirp->load_base); | |
1912 | tree_parse(node, "./psim,description \"load & map the binary"); | |
1913 | tree_parse(node, "./claim 1"); | |
1914 | tree_parse(node, "./file-name \"%s", bfd_get_filename(image)); | |
1915 | tree_parse(node, "./wimg %d", 0x7); | |
1916 | tree_parse(node, "./pp %d", 0x2); | |
1917 | } | |
1918 | ||
560ba567 AC |
1919 | /* map in the interrupt vectors */ |
1920 | ||
1921 | if (!chirp->real_mode) { | |
1922 | node = tree_parse(root, "/openprom/init/htab/pte@0x0"); | |
1923 | tree_parse(node, "./psim,description \"map in interrupt vectors"); | |
1924 | tree_parse(node, "./virtual-address 0x0"); | |
1925 | tree_parse(node, "./real-address 0x0"); | |
1926 | tree_parse(node, "./nr-bytes 0x3000"); | |
1927 | tree_parse(node, "./wimg %d", 0x7); | |
1928 | tree_parse(node, "./pp %d", 0x2); | |
1929 | } | |
1930 | ||
c906108c SS |
1931 | return chirp; |
1932 | } | |
1933 | ||
1934 | static void | |
1935 | emul_chirp_init(os_emul_data *emul_data, | |
1936 | int nr_cpus) | |
1937 | { | |
1938 | emul_data->state = serving; | |
1939 | } | |
1940 | ||
1941 | static int | |
1942 | emul_chirp_instruction_call(cpu *processor, | |
1943 | unsigned_word cia, | |
1944 | unsigned_word ra, | |
1945 | os_emul_data *emul_data) | |
1946 | { | |
1947 | unsigned_word service_name_addr; | |
1948 | unsigned_word result; | |
1949 | char service_buf[32]; | |
1950 | char *service_name; | |
1951 | chirp_services *service; | |
1952 | ||
1953 | switch (emul_data->state) { | |
1954 | ||
1955 | case serving: | |
1956 | /* we are waiting on an OpenBoot request from the client program | |
1957 | via the client interface */ | |
1958 | if (cia != emul_data->code_client_va) | |
1959 | return 0; | |
1960 | emul_data->return_address = LR; | |
1961 | emul_data->arguments = cpu_registers(processor)->gpr[3]; | |
1962 | /* try to determine what to do */ | |
1963 | service_name_addr = emul_read_word(cpu_registers(processor)->gpr[3], | |
1964 | processor, cia); | |
1965 | service_name = emul_read_string(service_buf, service_name_addr, | |
1966 | sizeof(service_buf), processor, cia); | |
1967 | emul_data->n_args = emul_read_word(emul_data->arguments + sizeof(unsigned_cell), | |
1968 | processor, cia); | |
1969 | emul_data->n_returns = emul_read_word(emul_data->arguments + 2 * sizeof(unsigned_cell), | |
1970 | processor, cia); | |
1971 | /* verify what was passed */ | |
1972 | if (service_name_addr == 0 | |
1973 | || service_name == NULL) { | |
1974 | error("OpenFirmware called with invalid (NULL) service name from 0x%lx with args 0x%lx\n", | |
1975 | (unsigned long)emul_data->return_address, | |
1976 | (unsigned long)emul_data->arguments); | |
1977 | } | |
1978 | if (emul_data->n_args > 6) { /* See iee1275 requirements on nr returns */ | |
1979 | error("OpenFirmware service %s called from 0x%lx with args 0x%lx, too many args (%d)\n", | |
1980 | (unsigned long)emul_data->return_address, | |
1981 | (unsigned long)emul_data->arguments, | |
1982 | emul_data->n_returns); | |
1983 | } | |
1984 | if (emul_data->n_returns > 6) { | |
1985 | error("OpenFirmware service %s called from 0x%lx with args 0x%lx, with too many returns (%d)\n", | |
1986 | (unsigned long)emul_data->return_address, | |
1987 | (unsigned long)emul_data->arguments, | |
1988 | emul_data->n_args); | |
1989 | } | |
1990 | /* look it up */ | |
1991 | TRACE(trace_os_emul, ("%s called from 0x%lx with args 0x%lx\n", | |
1992 | service_name, | |
1993 | (unsigned long)emul_data->return_address, | |
1994 | (unsigned long)emul_data->arguments)); | |
1995 | service = services; | |
1996 | while (service->name != NULL && strcmp(service->name, service_name) != 0) | |
1997 | service++; | |
1998 | /* found or not? */ | |
1999 | if (service->name == NULL) { | |
2000 | error("OpenBoot service `%s' not found\n", service_name); | |
2001 | TRACE(trace_os_emul, ("%s not found\n", service_name)); | |
2002 | cpu_registers(processor)->gpr[3] = -1; | |
2003 | } | |
2004 | else { | |
2005 | emul_data->service = service; | |
2006 | /* call upon it */ | |
2007 | result = service->handler(emul_data, processor, cia); | |
2008 | if (result != 0) | |
2009 | TRACE(trace_os_emul, ("%s aborted with %ld\n", service_name, (long)result)); | |
2010 | cpu_registers(processor)->gpr[3] = result; | |
2011 | } | |
2012 | break; | |
2013 | ||
2014 | default: | |
2015 | error("emul_chirp_instruction_call() unknown internal state\n"); | |
2016 | result = -1; | |
2017 | break; | |
2018 | ||
2019 | } | |
2020 | ||
2021 | /* return to caller - instruction following this is a function return */ | |
2022 | return 1; | |
2023 | } | |
2024 | ||
2025 | const os_emul emul_chirp = { | |
2026 | "chirp", | |
2027 | emul_chirp_create, | |
2028 | emul_chirp_init, | |
2029 | NULL, /*system_call*/ | |
2030 | emul_chirp_instruction_call, | |
2031 | 0 /*data*/ | |
2032 | }; | |
2033 | ||
2034 | #endif |