Commit | Line | Data |
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93fac324 MM |
1 | /* This file is part of the program psim. |
2 | ||
5c04f4f7 | 3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> |
93fac324 MM |
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. | |
5c04f4f7 | 14 | |
93fac324 MM |
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. | |
5c04f4f7 | 18 | |
93fac324 MM |
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 | ||
93fac324 MM |
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 | #include <unistd.h> | |
40 | ||
41 | #ifndef STATIC_INLINE_EMUL_CHIRP | |
42 | #define STATIC_INLINE_EMUL_CHIRP STATIC_INLINE | |
43 | #endif | |
44 | ||
45 | ||
5c04f4f7 MM |
46 | /* EMULATION |
47 | ||
48 | ||
49 | OpenFirmware - IEEE Standard for Boot (Initialization | |
50 | Configuration) Firmware. | |
51 | ||
52 | ||
53 | DESCRIPTION | |
54 | ||
55 | ||
56 | BUGS | |
57 | ||
58 | ||
59 | This code assumes that the memory node has #address-cells and | |
60 | #size-cells set to one. For future implementations, this may not | |
61 | be the case. | |
62 | ||
63 | */ | |
64 | ||
65 | ||
66 | ||
67 | ||
93fac324 MM |
68 | /* Descriptor of the open boot services being emulated */ |
69 | ||
979c3c25 | 70 | typedef int (chirp_handler) |
93fac324 MM |
71 | (os_emul_data *data, |
72 | cpu *processor, | |
73 | unsigned_word cia); | |
5c04f4f7 | 74 | |
93fac324 MM |
75 | typedef struct _chirp_services { |
76 | const char *name; | |
77 | chirp_handler *handler; | |
78 | } chirp_services; | |
79 | ||
80 | ||
81 | /* The OpenBoot emulation is, at any time either waiting for a client | |
82 | request or waiting on a client callback */ | |
83 | typedef enum { | |
84 | serving, | |
5c04f4f7 | 85 | emulating, |
979c3c25 | 86 | faulting, |
93fac324 MM |
87 | } chirp_emul_state; |
88 | ||
89 | struct _os_emul_data { | |
90 | chirp_emul_state state; | |
91 | unsigned_word return_address; | |
92 | unsigned_word arguments; | |
5c04f4f7 MM |
93 | unsigned_word n_args; |
94 | unsigned_word n_returns; | |
93fac324 | 95 | chirp_services *service; |
93fac324 | 96 | device *root; |
52edddb9 | 97 | chirp_services *services; |
5c04f4f7 MM |
98 | /* configuration */ |
99 | unsigned_word memory_size; | |
100 | unsigned_word real_base; | |
101 | unsigned_word real_size; | |
102 | unsigned_word virt_base; | |
103 | unsigned_word virt_size; | |
104 | int real_mode; | |
105 | int little_endian; | |
106 | int floating_point_available; | |
107 | int interrupt_prefix; | |
108 | unsigned_word load_base; | |
109 | /* hash table */ | |
110 | unsigned_word nr_page_table_entry_groups; | |
111 | unsigned_word htab_offset; | |
112 | unsigned_word htab_ra; | |
113 | unsigned_word htab_va; | |
114 | unsigned_word sizeof_htab; | |
115 | /* virtual address of htab */ | |
116 | unsigned_word stack_offset; | |
117 | unsigned_word stack_ra; | |
118 | unsigned_word stack_va; | |
119 | unsigned_word sizeof_stack; | |
120 | /* addresses of emulation instructions virtual/real */ | |
121 | unsigned_word code_offset; | |
122 | unsigned_word code_va; | |
123 | unsigned_word code_ra; | |
124 | unsigned_word sizeof_code; | |
125 | unsigned_word code_client_va; | |
126 | unsigned_word code_client_ra; | |
127 | unsigned_word code_callback_va; | |
128 | unsigned_word code_callback_ra; | |
129 | unsigned_word code_loop_va; | |
130 | unsigned_word code_loop_ra; | |
93fac324 MM |
131 | }; |
132 | ||
133 | ||
5c04f4f7 MM |
134 | /* returns the name of the corresponding Ihandle */ |
135 | static const char * | |
136 | ihandle_name(device_instance *ihandle) | |
137 | { | |
138 | if (ihandle == NULL) | |
139 | return ""; | |
140 | else | |
141 | return device_name(device_instance_device(ihandle)); | |
142 | } | |
143 | ||
144 | ||
145 | ||
146 | /* Read/write the argument list making certain that all values are | |
147 | converted to/from host byte order. | |
148 | ||
149 | In the below only n_args+n_returns is read/written */ | |
52edddb9 MM |
150 | |
151 | static int | |
5c04f4f7 MM |
152 | chirp_read_t2h_args(void *args, |
153 | int sizeof_args, | |
154 | int n_args, | |
155 | int n_returns, | |
156 | os_emul_data *data, | |
157 | cpu *processor, | |
158 | unsigned_word cia) | |
52edddb9 | 159 | { |
5c04f4f7 MM |
160 | unsigned_cell *words; |
161 | int i; | |
162 | /* check against the number of arguments specified by the client | |
163 | program */ | |
164 | if ((n_args >= 0 && data->n_args != n_args) | |
165 | || (n_returns >= 0 && data->n_returns != n_returns)) { | |
166 | TRACE(trace_os_emul, ("%s - invalid nr of args - n_args=%ld, n_returns=%ld\n", | |
167 | data->service->name, | |
168 | (long)data->n_args, | |
169 | (long)data->n_returns)); | |
52edddb9 MM |
170 | return -1; |
171 | } | |
5c04f4f7 MM |
172 | /* check that there is enough space */ |
173 | if (sizeof(unsigned_cell) * (data->n_args + data->n_returns) > sizeof_args) | |
174 | return -1; | |
175 | /* bring in the data */ | |
176 | memset(args, 0, sizeof_args); | |
177 | emul_read_buffer(args, data->arguments + 3 * sizeof(unsigned_cell), | |
178 | sizeof(unsigned_cell) * (data->n_args + data->n_returns), | |
179 | processor, cia); | |
180 | /* convert all words to host format */ | |
181 | words = args; | |
182 | for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++) | |
183 | words[i] = T2H_cell(words[i]); | |
52edddb9 MM |
184 | return 0; |
185 | } | |
186 | ||
5c04f4f7 MM |
187 | static void |
188 | chirp_write_h2t_args(void *args, | |
189 | int sizeof_args, | |
190 | os_emul_data *data, | |
191 | cpu *processor, | |
192 | unsigned_word cia) | |
193 | { | |
194 | int i; | |
195 | unsigned_cell *words; | |
196 | /* convert to target everything */ | |
197 | words = args; | |
198 | for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++) | |
199 | words[i] = H2T_cell(words[i]); | |
200 | /* bring in the data */ | |
201 | emul_write_buffer(args, data->arguments + 3 * sizeof(unsigned_cell), | |
202 | sizeof(unsigned_cell) * (data->n_args + data->n_returns), | |
203 | processor, cia); | |
204 | } | |
205 | ||
52edddb9 | 206 | |
93fac324 MM |
207 | /* OpenBoot emulation functions */ |
208 | ||
52edddb9 MM |
209 | /* client interface */ |
210 | ||
211 | static int | |
212 | chirp_emul_test(os_emul_data *data, | |
213 | cpu *processor, | |
214 | unsigned_word cia) | |
215 | { | |
216 | struct test_args { | |
52edddb9 | 217 | /*in*/ |
5c04f4f7 | 218 | unsigned_cell name; /*string*/ |
52edddb9 | 219 | /*out*/ |
5c04f4f7 | 220 | unsigned_cell missing; |
52edddb9 MM |
221 | } args; |
222 | char name[32]; | |
5c04f4f7 | 223 | chirp_services *service = NULL; |
52edddb9 | 224 | /* read in the arguments */ |
5c04f4f7 | 225 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) |
52edddb9 | 226 | return -1; |
5c04f4f7 | 227 | emul_read_string(name, args.name, sizeof(name), |
52edddb9 MM |
228 | processor, cia); |
229 | TRACE(trace_os_emul, ("test - in - name=`%s'\n", name)); | |
230 | /* see if we know about the service */ | |
5c04f4f7 | 231 | service = data->services; |
52edddb9 MM |
232 | while (service->name != NULL && strcmp(service->name, name) != 0) { |
233 | service++; | |
234 | } | |
235 | if (service->name == NULL) | |
236 | args.missing = -1; | |
237 | else | |
238 | args.missing = 0; | |
239 | /* write the arguments back out */ | |
240 | TRACE(trace_os_emul, ("test - out - missing=%ld\n", | |
241 | (long)args.missing)); | |
5c04f4f7 MM |
242 | chirp_write_h2t_args(&args, |
243 | sizeof(args), | |
244 | data, | |
245 | processor, cia); | |
52edddb9 MM |
246 | return 0; |
247 | } | |
248 | ||
249 | ||
250 | /* Device tree */ | |
251 | ||
252 | static int | |
253 | chirp_emul_peer(os_emul_data *data, | |
254 | cpu *processor, | |
255 | unsigned_word cia) | |
256 | { | |
257 | struct peer_args { | |
52edddb9 | 258 | /*in*/ |
5c04f4f7 | 259 | unsigned_cell phandle; |
52edddb9 | 260 | /*out*/ |
5c04f4f7 | 261 | unsigned_cell sibling_phandle; |
52edddb9 | 262 | } args; |
5c04f4f7 MM |
263 | device *phandle; |
264 | device *sibling_phandle = NULL; | |
52edddb9 | 265 | /* read in the arguments */ |
5c04f4f7 | 266 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) |
52edddb9 | 267 | return -1; |
5c04f4f7 | 268 | phandle = external_to_device(data->root, args.phandle); |
52edddb9 | 269 | TRACE(trace_os_emul, ("peer - in - phandle=0x%lx(0x%lx`%s')\n", |
5c04f4f7 MM |
270 | (unsigned long)args.phandle, |
271 | (unsigned long)phandle, | |
272 | (phandle == NULL ? "" : device_name(phandle)))); | |
52edddb9 | 273 | /* find the peer */ |
5c04f4f7 MM |
274 | if (args.phandle == 0) { |
275 | sibling_phandle = data->root; | |
276 | args.sibling_phandle = device_to_external(sibling_phandle); | |
277 | } | |
278 | else if (phandle == NULL) { | |
279 | sibling_phandle = NULL; | |
280 | args.sibling_phandle = -1; | |
281 | } | |
282 | else { | |
283 | sibling_phandle = device_sibling(phandle); | |
284 | if (sibling_phandle == NULL) | |
285 | args.sibling_phandle = 0; | |
286 | else | |
287 | args.sibling_phandle = device_to_external(sibling_phandle); | |
288 | } | |
52edddb9 MM |
289 | /* write the arguments back out */ |
290 | TRACE(trace_os_emul, ("peer - out - sibling_phandle=0x%lx(0x%lx`%s')\n", | |
5c04f4f7 MM |
291 | (unsigned long)args.sibling_phandle, |
292 | (unsigned long)sibling_phandle, | |
293 | (sibling_phandle == NULL ? "" : device_name(sibling_phandle)))); | |
294 | chirp_write_h2t_args(&args, | |
295 | sizeof(args), | |
296 | data, | |
297 | processor, cia); | |
52edddb9 MM |
298 | return 0; |
299 | } | |
300 | ||
979c3c25 MM |
301 | static int |
302 | chirp_emul_child(os_emul_data *data, | |
303 | cpu *processor, | |
304 | unsigned_word cia) | |
305 | { | |
306 | struct child_args { | |
979c3c25 | 307 | /*in*/ |
5c04f4f7 | 308 | unsigned_cell phandle; |
979c3c25 | 309 | /*out*/ |
5c04f4f7 | 310 | unsigned_cell child_phandle; |
979c3c25 | 311 | } args; |
5c04f4f7 MM |
312 | device *phandle; |
313 | device *child_phandle; | |
52edddb9 | 314 | /* read the arguments in */ |
5c04f4f7 | 315 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) |
979c3c25 | 316 | return -1; |
5c04f4f7 | 317 | phandle = external_to_device(data->root, args.phandle); |
979c3c25 | 318 | TRACE(trace_os_emul, ("child - in - phandle=0x%lx(0x%lx`%s')\n", |
5c04f4f7 MM |
319 | (unsigned long)args.phandle, |
320 | (unsigned long)phandle, | |
321 | (phandle == NULL ? "" : device_name(phandle)))); | |
52edddb9 | 322 | /* find a child */ |
5c04f4f7 MM |
323 | if (args.phandle == 0 |
324 | || phandle == NULL) { | |
325 | child_phandle = NULL; | |
326 | args.child_phandle = -1; | |
327 | } | |
328 | else { | |
329 | child_phandle = device_child(phandle); | |
330 | if (child_phandle == NULL) | |
331 | args.child_phandle = 0; | |
332 | else | |
333 | args.child_phandle = device_to_external(child_phandle); | |
334 | } | |
52edddb9 | 335 | /* write the result out */ |
979c3c25 | 336 | TRACE(trace_os_emul, ("child - out - child_phandle=0x%lx(0x%lx`%s')\n", |
5c04f4f7 MM |
337 | (unsigned long)args.child_phandle, |
338 | (unsigned long)child_phandle, | |
339 | (child_phandle == NULL ? "" : device_name(child_phandle)))); | |
340 | chirp_write_h2t_args(&args, | |
341 | sizeof(args), | |
342 | data, | |
343 | processor, cia); | |
979c3c25 MM |
344 | return 0; |
345 | } | |
346 | ||
347 | static int | |
52edddb9 MM |
348 | chirp_emul_parent(os_emul_data *data, |
349 | cpu *processor, | |
350 | unsigned_word cia) | |
979c3c25 | 351 | { |
52edddb9 | 352 | struct parent_args { |
52edddb9 | 353 | /*in*/ |
5c04f4f7 | 354 | unsigned_cell phandle; |
52edddb9 | 355 | /*out*/ |
5c04f4f7 | 356 | unsigned_cell parent_phandle; |
52edddb9 | 357 | } args; |
5c04f4f7 MM |
358 | device *phandle; |
359 | device *parent_phandle; | |
52edddb9 | 360 | /* read the args in */ |
5c04f4f7 | 361 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) |
52edddb9 | 362 | return -1; |
5c04f4f7 | 363 | phandle = external_to_device(data->root, args.phandle); |
52edddb9 | 364 | TRACE(trace_os_emul, ("parent - in - phandle=0x%lx(0x%lx`%s')\n", |
5c04f4f7 MM |
365 | (unsigned long)args.phandle, |
366 | (unsigned long)phandle, | |
367 | (phandle == NULL ? "" : device_name(phandle)))); | |
52edddb9 | 368 | /* find a parent */ |
5c04f4f7 MM |
369 | if (args.phandle == 0 |
370 | || phandle == NULL) { | |
371 | parent_phandle = NULL; | |
372 | args.parent_phandle = -1; | |
373 | } | |
374 | else { | |
375 | parent_phandle = device_parent(phandle); | |
376 | if (parent_phandle == NULL) | |
377 | args.parent_phandle = 0; | |
378 | else | |
379 | args.parent_phandle = device_to_external(parent_phandle); | |
380 | } | |
52edddb9 MM |
381 | /* return the result */ |
382 | TRACE(trace_os_emul, ("parent - out - parent_phandle=0x%lx(0x%lx`%s')\n", | |
5c04f4f7 MM |
383 | (unsigned long)args.parent_phandle, |
384 | (unsigned long)parent_phandle, | |
385 | (parent_phandle == NULL ? "" : device_name(parent_phandle)))); | |
386 | chirp_write_h2t_args(&args, | |
387 | sizeof(args), | |
388 | data, | |
389 | processor, cia); | |
979c3c25 MM |
390 | return 0; |
391 | } | |
392 | ||
393 | static int | |
52edddb9 MM |
394 | chirp_emul_instance_to_package(os_emul_data *data, |
395 | cpu *processor, | |
396 | unsigned_word cia) | |
397 | { | |
5c04f4f7 MM |
398 | struct instance_to_package_args { |
399 | /*in*/ | |
400 | unsigned_cell ihandle; | |
401 | /*out*/ | |
402 | unsigned_cell phandle; | |
403 | } args; | |
404 | device_instance *ihandle; | |
405 | device *phandle = NULL; | |
406 | /* read the args in */ | |
407 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) | |
408 | return -1; | |
409 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
410 | TRACE(trace_os_emul, ("instance-to-package - in - ihandle=0x%lx(0x%lx`%s')\n", | |
411 | (unsigned long)args.ihandle, | |
412 | (unsigned long)ihandle, | |
413 | ihandle_name(ihandle))); | |
414 | /* find the corresponding phandle */ | |
415 | if (ihandle == NULL) { | |
416 | phandle = NULL; | |
417 | args.phandle = -1; | |
418 | } | |
419 | else { | |
420 | phandle = device_instance_device(ihandle); | |
421 | args.phandle = device_to_external(phandle); | |
422 | } | |
423 | /* return the result */ | |
424 | TRACE(trace_os_emul, ("instance-to-package - out - phandle=0x%lx(0x%lx`%s')\n", | |
425 | (unsigned long)args.phandle, | |
426 | (unsigned long)phandle, | |
427 | (phandle == NULL ? "" : device_name(phandle)))); | |
428 | chirp_write_h2t_args(&args, | |
429 | sizeof(args), | |
430 | data, | |
431 | processor, cia); | |
52edddb9 MM |
432 | return 0; |
433 | } | |
434 | ||
435 | static int | |
436 | chirp_emul_getproplen(os_emul_data *data, | |
93fac324 MM |
437 | cpu *processor, |
438 | unsigned_word cia) | |
439 | { | |
52edddb9 | 440 | struct getproplen_args { |
93fac324 | 441 | /*in*/ |
5c04f4f7 MM |
442 | unsigned_cell phandle; |
443 | unsigned_cell name; | |
52edddb9 | 444 | /*out*/ |
5c04f4f7 | 445 | unsigned_cell proplen; |
93fac324 | 446 | } args; |
52edddb9 | 447 | char name[32]; |
5c04f4f7 | 448 | device *phandle; |
52edddb9 | 449 | /* read the args in */ |
5c04f4f7 | 450 | if (chirp_read_t2h_args(&args, sizeof(args), 2, 1, data, processor, cia)) |
52edddb9 | 451 | return -1; |
5c04f4f7 | 452 | phandle = external_to_device(data->root, args.phandle); |
52edddb9 | 453 | emul_read_string(name, |
5c04f4f7 | 454 | args.name, |
52edddb9 MM |
455 | sizeof(name), |
456 | processor, cia); | |
457 | TRACE(trace_os_emul, ("getproplen - in - phandle=0x%lx(0x%lx`%s') name=`%s'\n", | |
5c04f4f7 MM |
458 | (unsigned long)args.phandle, |
459 | (unsigned long)phandle, | |
460 | (phandle == NULL ? "" : device_name(phandle)), | |
52edddb9 | 461 | name)); |
5c04f4f7 MM |
462 | /* find our prop and get its length */ |
463 | if (args.phandle == 0 | |
464 | || phandle == NULL) { | |
52edddb9 MM |
465 | args.proplen = -1; |
466 | } | |
467 | else { | |
5c04f4f7 MM |
468 | const device_property *prop = device_find_property(phandle, name); |
469 | if (prop == (device_property*)0) { | |
470 | args.proplen = -1; | |
471 | } | |
472 | else { | |
473 | args.proplen = prop->sizeof_array; | |
474 | } | |
52edddb9 MM |
475 | } |
476 | /* return the result */ | |
477 | TRACE(trace_os_emul, ("getproplen - out - proplen=%ld\n", | |
5c04f4f7 MM |
478 | (unsigned long)args.proplen)); |
479 | chirp_write_h2t_args(&args, | |
480 | sizeof(args), | |
481 | data, | |
482 | processor, cia); | |
93fac324 MM |
483 | return 0; |
484 | } | |
485 | ||
979c3c25 | 486 | static int |
93fac324 MM |
487 | chirp_emul_getprop(os_emul_data *data, |
488 | cpu *processor, | |
489 | unsigned_word cia) | |
490 | { | |
491 | struct getprop_args { | |
93fac324 | 492 | /*in*/ |
5c04f4f7 MM |
493 | unsigned_cell phandle; |
494 | unsigned_cell name; | |
495 | unsigned_cell buf; | |
496 | unsigned_cell buflen; | |
93fac324 | 497 | /*out*/ |
5c04f4f7 | 498 | unsigned_cell size; |
93fac324 MM |
499 | } args; |
500 | char name[32]; | |
5c04f4f7 MM |
501 | device *phandle; |
502 | /* read in the args, the return is optional */ | |
503 | if (chirp_read_t2h_args(&args, sizeof(args), 4, -1, data, processor, cia)) | |
93fac324 | 504 | return -1; |
5c04f4f7 | 505 | phandle = external_to_device(data->root, args.phandle); |
93fac324 | 506 | emul_read_string(name, |
5c04f4f7 | 507 | args.name, |
93fac324 MM |
508 | sizeof(name), |
509 | processor, cia); | |
979c3c25 | 510 | TRACE(trace_os_emul, ("getprop - in - phandle=0x%lx(0x%lx`%s') name=`%s' buf=0x%lx buflen=%ld\n", |
5c04f4f7 MM |
511 | (unsigned long)args.phandle, |
512 | (unsigned long)phandle, | |
513 | (phandle == NULL ? "" : device_name(phandle)), | |
979c3c25 | 514 | name, |
5c04f4f7 MM |
515 | (unsigned long)args.buf, |
516 | (unsigned long)args.buflen)); | |
52edddb9 | 517 | /* get the property */ |
5c04f4f7 MM |
518 | if (args.phandle == 0 |
519 | || phandle == NULL) { | |
93fac324 MM |
520 | args.size = -1; |
521 | } | |
522 | else { | |
5c04f4f7 MM |
523 | const device_property *prop = device_find_property(phandle, name); |
524 | if (prop == NULL) { | |
525 | args.size = -1; | |
526 | } | |
527 | else { | |
528 | int size = args.buflen; | |
529 | if (size > prop->sizeof_array) | |
530 | size = prop->sizeof_array; | |
531 | emul_write_buffer(prop->array, args.buf, | |
532 | size, | |
533 | processor, cia); | |
534 | args.size = size; | |
535 | switch (prop->type) { | |
536 | case string_property: | |
537 | TRACE(trace_os_emul, ("getprop - string `%s'\n", | |
538 | device_find_string_property(phandle, name))); | |
539 | break; | |
540 | case ihandle_property: | |
541 | TRACE(trace_os_emul, ("getprop - ihandle=0x%lx(0x%lx`%s')\n", | |
542 | BE2H_cell(*(unsigned_cell*)prop->array), | |
543 | (unsigned long)device_find_ihandle_property(phandle, name), | |
544 | ihandle_name(device_find_ihandle_property(phandle, name)))); | |
545 | break; | |
546 | default: | |
547 | break; | |
548 | } | |
549 | } | |
979c3c25 | 550 | } |
52edddb9 | 551 | /* write back the result */ |
5c04f4f7 MM |
552 | if (data->n_returns == 0) |
553 | TRACE(trace_os_emul, ("getprop - out - size=%ld (not returned)\n", | |
554 | (unsigned long)args.size)); | |
555 | else { | |
556 | TRACE(trace_os_emul, ("getprop - out - size=%ld\n", | |
557 | (unsigned long)args.size)); | |
558 | chirp_write_h2t_args(&args, | |
559 | sizeof(args), | |
560 | data, | |
561 | processor, cia); | |
562 | } | |
93fac324 MM |
563 | return 0; |
564 | } | |
565 | ||
979c3c25 | 566 | static int |
52edddb9 MM |
567 | chirp_emul_nextprop(os_emul_data *data, |
568 | cpu *processor, | |
569 | unsigned_word cia) | |
570 | { | |
5c04f4f7 MM |
571 | struct nextprop_args { |
572 | /*in*/ | |
573 | unsigned_cell phandle; | |
574 | unsigned_cell previous; | |
575 | unsigned_cell buf; | |
576 | /*out*/ | |
577 | unsigned_cell flag; | |
578 | } args; | |
579 | char previous[32]; | |
580 | device *phandle; | |
581 | /* read in the args */ | |
582 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
583 | return -1; | |
584 | phandle = external_to_device(data->root, args.phandle); | |
585 | emul_read_string(previous, | |
586 | args.previous, | |
587 | sizeof(previous), | |
588 | processor, cia); | |
589 | TRACE(trace_os_emul, ("nextprop - in - phandle=0x%lx(0x%lx`%s') previous=`%s' buf=0x%lx\n", | |
590 | (unsigned long)args.phandle, | |
591 | (unsigned long)phandle, | |
592 | (phandle == NULL ? "" : device_name(phandle)), | |
593 | previous, | |
594 | (unsigned long)args.buf)); | |
595 | /* find the next property */ | |
596 | if (args.phandle == 0 | |
597 | || phandle == NULL) { | |
598 | args.flag = -1; | |
599 | } | |
600 | else { | |
601 | const device_property *prev_prop = device_find_property(phandle, previous); | |
602 | if (prev_prop == NULL) { | |
603 | args.flag = -1; /* name invalid */ | |
604 | } | |
605 | else { | |
606 | const device_property *next_prop; | |
607 | next_prop = device_next_property(prev_prop); | |
608 | if (next_prop == NULL) { | |
609 | args.flag = 0; /* last property */ | |
610 | } | |
611 | else { | |
612 | emul_write_buffer(next_prop->name, args.buf, strlen(next_prop->name), | |
613 | processor, cia); | |
614 | TRACE(trace_os_emul, ("nextprop - name=`%s'\n", next_prop->name)); | |
615 | args.flag = 1; /* worked ok */ | |
616 | } | |
617 | } | |
618 | } | |
619 | /* write back the result */ | |
620 | TRACE(trace_os_emul, ("nextprop - out - flag=%ld\n", | |
621 | (unsigned long)args.flag)); | |
622 | chirp_write_h2t_args(&args, | |
623 | sizeof(args), | |
624 | data, | |
625 | processor, cia); | |
52edddb9 MM |
626 | return 0; |
627 | } | |
628 | ||
5c04f4f7 | 629 | #if 0 |
52edddb9 MM |
630 | static int |
631 | chirp_emul_setprop(os_emul_data *data, | |
632 | cpu *processor, | |
633 | unsigned_word cia) | |
634 | { | |
5c04f4f7 | 635 | error("chirp: setprop method not implemented\n"); |
52edddb9 MM |
636 | return 0; |
637 | } | |
5c04f4f7 | 638 | #endif |
52edddb9 MM |
639 | |
640 | static int | |
641 | chirp_emul_canon(os_emul_data *data, | |
5c04f4f7 MM |
642 | cpu *processor, |
643 | unsigned_word cia) | |
52edddb9 | 644 | { |
5c04f4f7 MM |
645 | struct canon_args { |
646 | /*in*/ | |
647 | unsigned_cell device_specifier; | |
648 | unsigned_cell buf; | |
649 | unsigned_cell buflen; | |
650 | /*out*/ | |
651 | unsigned_cell length; | |
652 | } args; | |
653 | char device_specifier[1024]; | |
654 | device *phandle; | |
655 | const char *path; | |
656 | int length; | |
657 | /* read in the args */ | |
658 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
659 | return -1; | |
660 | emul_read_string(device_specifier, | |
661 | args.device_specifier, | |
662 | sizeof(device_specifier), | |
663 | processor, cia); | |
664 | TRACE(trace_os_emul, ("canon - in - device_specifier=`%s' buf=0x%lx buflen=%lx\n", | |
665 | device_specifier, | |
666 | (unsigned long)args.buf, | |
667 | (unsigned long)args.buflen)); | |
668 | /* canon the name */ | |
669 | phandle = tree_find_device(data->root, device_specifier); | |
670 | if (phandle == NULL) { | |
671 | length = -1; | |
672 | path = ""; | |
673 | args.length = -1; | |
674 | } | |
675 | else { | |
676 | path = device_path(phandle); | |
677 | length = strlen(path); | |
678 | if (length >= args.buflen) | |
679 | length = args.buflen - 1; | |
680 | emul_write_buffer(path, args.buf, length, | |
681 | processor, cia); | |
682 | args.length = length; | |
683 | } | |
684 | /* write back the result */ | |
685 | TRACE(trace_os_emul, ("canon - out - length=%ld buf=`%s'\n", | |
686 | (unsigned long)args.length, | |
687 | path)); | |
688 | chirp_write_h2t_args(&args, | |
689 | sizeof(args), | |
690 | data, | |
691 | processor, cia); | |
52edddb9 MM |
692 | return 0; |
693 | } | |
694 | ||
695 | static int | |
696 | chirp_emul_finddevice(os_emul_data *data, | |
979c3c25 MM |
697 | cpu *processor, |
698 | unsigned_word cia) | |
699 | { | |
52edddb9 | 700 | struct finddevice_args { |
979c3c25 | 701 | /*in*/ |
5c04f4f7 | 702 | unsigned_cell device_specifier; |
979c3c25 | 703 | /*out*/ |
5c04f4f7 | 704 | unsigned_cell phandle; |
979c3c25 | 705 | } args; |
52edddb9 | 706 | char device_specifier[1024]; |
5c04f4f7 | 707 | device *phandle; |
52edddb9 | 708 | /* get the args */ |
5c04f4f7 | 709 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) |
979c3c25 | 710 | return -1; |
52edddb9 | 711 | emul_read_string(device_specifier, |
5c04f4f7 | 712 | args.device_specifier, |
52edddb9 | 713 | sizeof(device_specifier), |
979c3c25 | 714 | processor, cia); |
52edddb9 MM |
715 | TRACE(trace_os_emul, ("finddevice - in - device_specifier=`%s'\n", |
716 | device_specifier)); | |
717 | /* find the device */ | |
5c04f4f7 MM |
718 | phandle = tree_find_device(data->root, device_specifier); |
719 | if (phandle == NULL) | |
52edddb9 MM |
720 | args.phandle = -1; |
721 | else | |
5c04f4f7 | 722 | args.phandle = device_to_external(phandle); |
52edddb9 MM |
723 | /* return its phandle */ |
724 | TRACE(trace_os_emul, ("finddevice - out - phandle=0x%lx(0x%lx`%s')\n", | |
5c04f4f7 MM |
725 | (unsigned long)args.phandle, |
726 | (unsigned long)phandle, | |
727 | (phandle == NULL ? "" : device_name(phandle)))); | |
728 | chirp_write_h2t_args(&args, | |
729 | sizeof(args), | |
730 | data, | |
731 | processor, cia); | |
979c3c25 MM |
732 | return 0; |
733 | } | |
734 | ||
52edddb9 MM |
735 | static int |
736 | chirp_emul_instance_to_path(os_emul_data *data, | |
737 | cpu *processor, | |
738 | unsigned_word cia) | |
739 | { | |
5c04f4f7 MM |
740 | struct instance_to_path_args { |
741 | /*in*/ | |
742 | unsigned_cell ihandle; | |
743 | unsigned_cell buf; | |
744 | unsigned_cell buflen; | |
745 | /*out*/ | |
746 | unsigned_cell length; | |
747 | } args; | |
748 | device_instance *ihandle; | |
749 | const char *path; | |
750 | int length; | |
751 | /* get the args */ | |
752 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
753 | return -1; | |
754 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
755 | TRACE(trace_os_emul, ("instance-to-path - in - ihandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n", | |
756 | (unsigned long)args.ihandle, | |
757 | (unsigned long)ihandle, | |
758 | ihandle_name(ihandle), | |
759 | (unsigned long)args.buf, | |
760 | (unsigned long)args.buflen)); | |
761 | /* get the devices name */ | |
762 | if (ihandle == NULL) { | |
763 | args.length = -1; | |
764 | path = "(null)"; | |
765 | } | |
766 | else { | |
767 | path = device_instance_path(ihandle); | |
768 | length = strlen(path); | |
769 | if (length >= args.buflen) | |
770 | length = args.buflen - 1; | |
771 | emul_write_buffer(path, args.buf, length, | |
772 | processor, cia); | |
773 | args.length = length; | |
774 | } | |
775 | /* return its phandle */ | |
776 | TRACE(trace_os_emul, ("instance-to-path - out - length=%ld buf=`%s')\n", | |
777 | (unsigned long)args.length, | |
778 | path)); | |
779 | chirp_write_h2t_args(&args, | |
780 | sizeof(args), | |
781 | data, | |
782 | processor, cia); | |
52edddb9 MM |
783 | return 0; |
784 | } | |
785 | ||
786 | static int | |
787 | chirp_emul_package_to_path(os_emul_data *data, | |
5c04f4f7 MM |
788 | cpu *processor, |
789 | unsigned_word cia) | |
52edddb9 | 790 | { |
5c04f4f7 MM |
791 | struct package_to_path_args { |
792 | /*in*/ | |
793 | unsigned_cell phandle; | |
794 | unsigned_cell buf; | |
795 | unsigned_cell buflen; | |
796 | /*out*/ | |
797 | unsigned_cell length; | |
798 | } args; | |
799 | device *phandle; | |
800 | const char *path; | |
801 | /* get the args */ | |
802 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
803 | return -1; | |
804 | phandle = external_to_device(data->root, args.phandle); | |
805 | TRACE(trace_os_emul, ("package-to-path - in - phandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n", | |
806 | (unsigned long)args.phandle, | |
807 | (unsigned long)phandle, | |
808 | (phandle == NULL ? "" : device_name(phandle)), | |
809 | (unsigned long)args.buf, | |
810 | (unsigned long)args.buflen)); | |
811 | /* get the devices name */ | |
812 | if (phandle == NULL) { | |
813 | args.length = -1; | |
814 | path = "(null)"; | |
815 | } | |
816 | else { | |
817 | int length; | |
818 | path = device_path(phandle); | |
819 | length = strlen(path); | |
820 | if (length >= args.buflen) | |
821 | length = args.buflen - 1; | |
822 | emul_write_buffer(path, args.buf, length, | |
823 | processor, cia); | |
824 | args.length = length; | |
825 | } | |
826 | /* return its phandle */ | |
827 | TRACE(trace_os_emul, ("package-to-path - out - length=%ld buf=`%s')\n", | |
828 | (unsigned long)args.length, | |
829 | path)); | |
830 | chirp_write_h2t_args(&args, | |
831 | sizeof(args), | |
832 | data, | |
833 | processor, cia); | |
52edddb9 MM |
834 | return 0; |
835 | } | |
836 | ||
837 | static int | |
838 | chirp_emul_call_method(os_emul_data *data, | |
5c04f4f7 MM |
839 | cpu *processor, |
840 | unsigned_word cia) | |
52edddb9 | 841 | { |
5c04f4f7 MM |
842 | struct call_method_args { |
843 | /*in*/ | |
844 | unsigned_cell method; | |
845 | unsigned_cell ihandle; | |
846 | /*in/out*/ | |
847 | unsigned_cell stack[13]; /*6in + 6out + catch */ | |
848 | } args; | |
849 | char method[32]; | |
850 | device_instance *ihandle; | |
851 | /* some useful info about our mini stack */ | |
852 | int n_stack_args; | |
853 | int n_stack_returns; | |
854 | int stack_catch_result; | |
855 | int stack_returns; | |
856 | /* read the args */ | |
857 | if (chirp_read_t2h_args(&args, sizeof(args), -1, -1, data, processor, cia)) | |
858 | return -1; | |
859 | emul_read_string(method, | |
860 | args.method, | |
861 | sizeof(method), | |
862 | processor, cia); | |
863 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
864 | n_stack_args = data->n_args - 2; | |
865 | n_stack_returns = data->n_returns - 1; | |
866 | stack_catch_result = n_stack_args; | |
867 | stack_returns = stack_catch_result + 1; | |
868 | TRACE(trace_os_emul, ("call-method - in - n_args=%ld n_returns=%ld method=`%s' ihandle=0x%lx(0x%lx`%s')\n", | |
869 | (unsigned long)data->n_args, | |
870 | (unsigned long)data->n_returns, | |
871 | method, | |
872 | (unsigned long)args.ihandle, | |
873 | (unsigned long)ihandle, | |
874 | ihandle_name(ihandle))); | |
875 | /* see if we can emulate this method */ | |
876 | if (ihandle == NULL) { | |
877 | /* OpenFirmware doesn't define this error */ | |
878 | error("chirp: invalid ihandle passed to call-method method"); | |
879 | } | |
880 | else { | |
881 | args.stack[stack_catch_result] = | |
882 | device_instance_call_method(ihandle, | |
883 | method, | |
884 | n_stack_args, | |
885 | &args.stack[0], | |
886 | n_stack_returns, | |
887 | &args.stack[stack_returns]); | |
888 | } | |
889 | /* finished */ | |
890 | TRACE(trace_os_emul, ("call-method - out - catch-result=%ld\n", | |
891 | (unsigned long)args.stack[stack_catch_result])); | |
892 | chirp_write_h2t_args(&args, | |
893 | sizeof(args), | |
894 | data, | |
895 | processor, cia); | |
52edddb9 MM |
896 | return 0; |
897 | } | |
898 | ||
899 | ||
900 | /* Device I/O */ | |
901 | ||
979c3c25 MM |
902 | static int |
903 | chirp_emul_open(os_emul_data *data, | |
93fac324 MM |
904 | cpu *processor, |
905 | unsigned_word cia) | |
906 | { | |
979c3c25 | 907 | struct open_args { |
979c3c25 | 908 | /*in*/ |
5c04f4f7 | 909 | unsigned_cell device_specifier; |
979c3c25 | 910 | /*out*/ |
5c04f4f7 | 911 | unsigned_cell ihandle; |
979c3c25 | 912 | } args; |
5c04f4f7 MM |
913 | char device_specifier[1024]; |
914 | device_instance *ihandle; | |
52edddb9 | 915 | /* read the args */ |
5c04f4f7 | 916 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) |
979c3c25 | 917 | return -1; |
5c04f4f7 MM |
918 | emul_read_string(device_specifier, |
919 | args.device_specifier, | |
920 | sizeof(device_specifier), | |
979c3c25 MM |
921 | processor, cia); |
922 | TRACE(trace_os_emul, ("open - in - device_specifier=`%s'\n", | |
5c04f4f7 | 923 | device_specifier)); |
52edddb9 | 924 | /* open the device */ |
5c04f4f7 MM |
925 | ihandle = tree_instance(data->root, device_specifier); |
926 | if (ihandle == NULL) | |
927 | args.ihandle = -1; | |
928 | else | |
929 | args.ihandle = device_instance_to_external(ihandle); | |
52edddb9 | 930 | /* return the ihandle result */ |
5c04f4f7 MM |
931 | TRACE(trace_os_emul, ("open - out - ihandle=0x%lx(0x%lx`%s')\n", |
932 | (unsigned long)args.ihandle, | |
933 | (unsigned long)ihandle, | |
934 | ihandle_name(ihandle))); | |
935 | chirp_write_h2t_args(&args, | |
936 | sizeof(args), | |
937 | data, | |
938 | processor, cia); | |
979c3c25 MM |
939 | return 0; |
940 | } | |
941 | ||
942 | static int | |
52edddb9 MM |
943 | chirp_emul_close(os_emul_data *data, |
944 | cpu *processor, | |
945 | unsigned_word cia) | |
979c3c25 | 946 | { |
5c04f4f7 MM |
947 | struct close_args { |
948 | /*in*/ | |
949 | unsigned_cell ihandle; | |
950 | /*out*/ | |
951 | } args; | |
952 | device_instance *ihandle; | |
953 | /* read the args */ | |
954 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 0, data, processor, cia)) | |
955 | return -1; | |
956 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
957 | TRACE(trace_os_emul, ("close - in - ihandle=0x%lx(0x%lx`%s')\n", | |
958 | (unsigned long)args.ihandle, | |
959 | (unsigned long)ihandle, | |
960 | ihandle_name(ihandle))); | |
961 | /* close the device */ | |
962 | if (ihandle == NULL) { | |
963 | /* OpenFirmware doesn't define this error */ | |
964 | error("chirp: invalid ihandle passed to close method"); | |
965 | } | |
966 | else { | |
967 | device_instance_delete(ihandle); | |
968 | } | |
969 | /* return the ihandle result */ | |
970 | TRACE(trace_os_emul, ("close - out\n")); | |
971 | chirp_write_h2t_args(&args, | |
972 | sizeof(args), | |
973 | data, | |
974 | processor, cia); | |
979c3c25 MM |
975 | return 0; |
976 | } | |
977 | ||
978 | static int | |
52edddb9 | 979 | chirp_emul_read(os_emul_data *data, |
979c3c25 MM |
980 | cpu *processor, |
981 | unsigned_word cia) | |
982 | { | |
52edddb9 | 983 | struct read_args { |
979c3c25 | 984 | /*in*/ |
5c04f4f7 MM |
985 | unsigned_cell ihandle; |
986 | unsigned_cell addr; | |
987 | unsigned_cell len; | |
979c3c25 | 988 | /*out*/ |
5c04f4f7 | 989 | unsigned_cell actual; |
979c3c25 | 990 | } args; |
52edddb9 | 991 | char buf[1024]; |
5c04f4f7 | 992 | device_instance *ihandle; |
52edddb9 | 993 | /* read the args */ |
5c04f4f7 | 994 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) |
979c3c25 | 995 | return -1; |
5c04f4f7 MM |
996 | ihandle = external_to_device_instance(data->root, args.ihandle); |
997 | TRACE(trace_os_emul, ("read - in - ihandle=0x%lx(0x%lx`%s') addr=0x%lx len=%ld\n", | |
52edddb9 | 998 | (unsigned long)args.ihandle, |
5c04f4f7 MM |
999 | (unsigned long)ihandle, |
1000 | ihandle_name(ihandle), | |
1001 | (unsigned long)args.addr, | |
1002 | (unsigned long)args.len)); | |
1003 | if (ihandle == NULL) { | |
1004 | /* OpenFirmware doesn't define this error */ | |
1005 | error("chirp: invalid ihandle passed to read method"); | |
979c3c25 | 1006 | } |
52edddb9 | 1007 | else { |
5c04f4f7 MM |
1008 | /* do the reads */ |
1009 | int actual = 0; | |
1010 | while (actual < args.len) { | |
1011 | int remaining = args.len - actual; | |
1012 | int to_read = (remaining <= sizeof(buf) ? remaining : sizeof(buf)); | |
1013 | int nr_read = device_instance_read(ihandle, buf, to_read); | |
1014 | if (nr_read < 0) { | |
1015 | actual = nr_read; /* the error */ | |
1016 | break; | |
1017 | } | |
1018 | else if (nr_read == 0) { | |
1019 | break; | |
1020 | } | |
1021 | emul_write_buffer(buf, | |
1022 | args.addr + actual, | |
1023 | nr_read, | |
1024 | processor, cia); | |
1025 | actual += nr_read; | |
1026 | } | |
1027 | if (actual >= 0) { | |
1028 | args.actual = actual; | |
1029 | if (actual < sizeof(buf)) | |
1030 | buf[actual] = '\0'; | |
1031 | else | |
1032 | buf[sizeof(buf) - 1] = '\0'; | |
1033 | } | |
1034 | else { | |
1035 | switch (actual) { | |
1036 | case sim_io_eof: | |
1037 | args.actual = 0; | |
1038 | break; | |
1039 | case sim_io_not_ready: | |
1040 | ASSERT(sim_io_not_ready == -2); | |
1041 | args.actual = sim_io_not_ready; | |
1042 | break; | |
1043 | default: | |
1044 | error("Bad error value %ld", (long)actual); | |
1045 | break; | |
1046 | } | |
1047 | } | |
52edddb9 MM |
1048 | } |
1049 | /* return the result */ | |
1050 | TRACE(trace_os_emul, ("read - out - actual=%ld `%s'\n", | |
5c04f4f7 MM |
1051 | (long)args.actual, |
1052 | ((args.actual > 0 && args.actual < sizeof(buf)) ? buf : "") | |
1053 | )); | |
1054 | chirp_write_h2t_args(&args, | |
1055 | sizeof(args), | |
1056 | data, | |
1057 | processor, cia); | |
979c3c25 MM |
1058 | return 0; |
1059 | } | |
1060 | ||
1061 | static int | |
52edddb9 | 1062 | chirp_emul_write(os_emul_data *data, |
5c04f4f7 MM |
1063 | cpu *processor, |
1064 | unsigned_word cia) | |
979c3c25 | 1065 | { |
52edddb9 | 1066 | struct write_args { |
93fac324 | 1067 | /*in*/ |
5c04f4f7 MM |
1068 | unsigned_cell ihandle; |
1069 | unsigned_cell addr; | |
1070 | unsigned_cell len; | |
93fac324 | 1071 | /*out*/ |
5c04f4f7 | 1072 | unsigned_cell actual; |
93fac324 MM |
1073 | } args; |
1074 | char buf[1024]; | |
5c04f4f7 | 1075 | device_instance *ihandle; |
93fac324 | 1076 | int actual; |
52edddb9 | 1077 | /* get the args */ |
5c04f4f7 | 1078 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) |
93fac324 | 1079 | return -1; |
5c04f4f7 | 1080 | actual = args.len; |
979c3c25 MM |
1081 | if (actual >= sizeof(buf)) |
1082 | actual = sizeof(buf) - 1; | |
93fac324 | 1083 | emul_read_buffer(buf, |
5c04f4f7 | 1084 | args.addr, |
93fac324 MM |
1085 | actual, |
1086 | processor, cia); | |
979c3c25 | 1087 | buf[actual] = '\0'; |
5c04f4f7 MM |
1088 | ihandle = external_to_device_instance(data->root, args.ihandle); |
1089 | TRACE(trace_os_emul, ("write - in - ihandle=0x%lx(0x%lx`%s') `%s' (%ld)\n", | |
1090 | (unsigned long)args.ihandle, | |
1091 | (unsigned long)ihandle, | |
1092 | ihandle_name(ihandle), | |
1093 | buf, (long)actual)); | |
1094 | if (ihandle == NULL) { | |
1095 | /* OpenFirmware doesn't define this error */ | |
1096 | error("chirp: invalid ihandle passed to write method"); | |
1097 | } | |
1098 | else { | |
1099 | /* write it out */ | |
1100 | actual = device_instance_write(ihandle, buf, actual); | |
1101 | if (actual < 0) | |
1102 | args.actual = 0; | |
1103 | else | |
1104 | args.actual = actual; | |
1105 | } | |
52edddb9 MM |
1106 | /* return the result */ |
1107 | TRACE(trace_os_emul, ("write - out - actual=%ld\n", | |
5c04f4f7 MM |
1108 | (long)args.actual)); |
1109 | chirp_write_h2t_args(&args, | |
1110 | sizeof(args), | |
1111 | data, | |
1112 | processor, cia); | |
93fac324 MM |
1113 | return 0; |
1114 | } | |
1115 | ||
979c3c25 | 1116 | static int |
52edddb9 | 1117 | chirp_emul_seek(os_emul_data *data, |
979c3c25 MM |
1118 | cpu *processor, |
1119 | unsigned_word cia) | |
93fac324 | 1120 | { |
5c04f4f7 MM |
1121 | struct seek_args { |
1122 | /*in*/ | |
1123 | unsigned_cell ihandle; | |
1124 | unsigned_cell pos_hi; | |
1125 | unsigned_cell pos_lo; | |
1126 | /*out*/ | |
1127 | unsigned_cell status; | |
1128 | } args; | |
1129 | int status; | |
1130 | device_instance *ihandle; | |
1131 | /* get the args */ | |
1132 | if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia)) | |
1133 | return -1; | |
1134 | ihandle = external_to_device_instance(data->root, args.ihandle); | |
1135 | TRACE(trace_os_emul, ("seek - in - ihandle=0x%lx(0x%lx`%s') pos.hi=0x%lx pos.lo=0x%lx\n", | |
1136 | (unsigned long)args.ihandle, | |
1137 | (unsigned long)ihandle, | |
1138 | ihandle_name(ihandle), | |
1139 | args.pos_hi, args.pos_lo)); | |
1140 | if (ihandle == NULL) { | |
1141 | /* OpenFirmware doesn't define this error */ | |
1142 | error("chirp: invalid ihandle passed to seek method"); | |
1143 | } | |
1144 | else { | |
1145 | /* seek it out */ | |
1146 | status = device_instance_seek(ihandle, args.pos_hi, args.pos_lo); | |
1147 | args.status = status; | |
1148 | } | |
1149 | /* return the result */ | |
1150 | TRACE(trace_os_emul, ("seek - out - status=%ld\n", | |
1151 | (long)args.status)); | |
1152 | chirp_write_h2t_args(&args, | |
1153 | sizeof(args), | |
1154 | data, | |
1155 | processor, cia); | |
52edddb9 MM |
1156 | return 0; |
1157 | } | |
1158 | ||
1159 | ||
1160 | /* memory */ | |
1161 | ||
1162 | static int | |
1163 | chirp_emul_claim(os_emul_data *data, | |
1164 | cpu *processor, | |
1165 | unsigned_word cia) | |
1166 | { | |
5c04f4f7 MM |
1167 | /* NOTE: the client interface claim routine is *very* different to |
1168 | the "claim" method described in IEEE-1275 appendix A. The latter | |
1169 | uses real addresses while this uses virtual (effective) | |
1170 | addresses. */ | |
1171 | struct claim_args { | |
1172 | /* in */ | |
1173 | unsigned_cell virt; | |
1174 | unsigned_cell size; | |
1175 | unsigned_cell align; | |
1176 | /* out */ | |
1177 | unsigned_cell baseaddr; | |
1178 | } args; | |
1179 | /* read the args */ | |
1180 | if (chirp_read_t2h_args(&args, sizeof(args), | |
1181 | 3 /*n_args*/, 1 /*n_returns*/, | |
1182 | data, processor, cia)) | |
1183 | return -1; | |
1184 | TRACE(trace_os_emul, ("claim - in - virt=0x%lx size=%ld align=%d\n", | |
1185 | (unsigned long)args.virt, | |
1186 | (long int)args.size, | |
1187 | (int)args.align)); | |
1188 | /* use the memory device to allocate (real) memory at the requested | |
1189 | address */ | |
1190 | { | |
1191 | device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory"); | |
1192 | unsigned_cell mem_in[3]; | |
1193 | unsigned_cell mem_out[1]; | |
1194 | mem_in[0] = args.align; /*top-of-stack*/ | |
1195 | mem_in[1] = args.size; | |
1196 | mem_in[2] = args.virt; | |
1197 | if (device_instance_call_method(memory, "claim", | |
1198 | 3, mem_in, 1, mem_out) < 0) | |
1199 | error("chirp: claim failed to allocate memory virt=0x%lx size=%ld align=%d", | |
1200 | (unsigned long)args.virt, | |
1201 | (long int)args.size, | |
1202 | (int)args.align); | |
1203 | args.baseaddr = mem_out[0]; | |
1204 | } | |
1205 | /* if using virtual addresses, create a 1-1 map of this address space */ | |
1206 | if (!data->real_mode) { | |
1207 | error("chirp: claim method does not support virtual mode"); | |
1208 | } | |
1209 | /* return the base address */ | |
1210 | TRACE(trace_os_emul, ("claim - out - baseaddr=0x%lx\n", | |
1211 | (unsigned long)args.baseaddr)); | |
1212 | chirp_write_h2t_args(&args, | |
1213 | sizeof(args), | |
1214 | data, | |
1215 | processor, cia); | |
52edddb9 MM |
1216 | return 0; |
1217 | } | |
1218 | ||
1219 | static int | |
1220 | chirp_emul_release(os_emul_data *data, | |
1221 | cpu *processor, | |
1222 | unsigned_word cia) | |
1223 | { | |
5c04f4f7 MM |
1224 | /* NOTE: the client interface release routine is *very* different to |
1225 | the "claim" method described in IEEE-1275 appendix A. The latter | |
1226 | uses real addresses while this uses virtual (effective) | |
1227 | addresses. */ | |
1228 | struct claim_args { | |
1229 | /* in */ | |
1230 | unsigned_cell virt; | |
1231 | unsigned_cell size; | |
1232 | /* out */ | |
1233 | } args; | |
1234 | /* read the args */ | |
1235 | if (chirp_read_t2h_args(&args, sizeof(args), | |
1236 | 2 /*n_args*/, 0 /*n_returns*/, | |
1237 | data, processor, cia)) | |
1238 | return -1; | |
1239 | TRACE(trace_os_emul, ("release - in - virt=0x%lx size=%ld\n", | |
1240 | (unsigned long)args.virt, | |
1241 | (long int)args.size)); | |
1242 | /* use the memory device to release (real) memory at the requested | |
1243 | address */ | |
1244 | { | |
1245 | device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory"); | |
1246 | unsigned_cell mem_in[2]; | |
1247 | mem_in[0] = args.size; | |
1248 | mem_in[1] = args.virt; | |
1249 | if (device_instance_call_method(memory, "release", | |
1250 | 2, mem_in, 0, NULL) < 0) | |
1251 | error("chirp: claim failed to release memory virt=0x%lx size=%ld", | |
1252 | (unsigned long)args.virt, | |
1253 | (long int)args.size); | |
1254 | } | |
1255 | /* if using virtual addresses, remove the 1-1 map of this address space */ | |
1256 | if (!data->real_mode) { | |
1257 | error("chirp: release method does not support virtual mode"); | |
1258 | } | |
1259 | /* return the base address */ | |
1260 | TRACE(trace_os_emul, ("release - out\n")); | |
1261 | chirp_write_h2t_args(&args, | |
1262 | sizeof(args), | |
1263 | data, | |
1264 | processor, cia); | |
52edddb9 MM |
1265 | return 0; |
1266 | } | |
1267 | ||
1268 | ||
1269 | /* Control transfer */ | |
1270 | ||
1271 | static int | |
1272 | chirp_emul_boot(os_emul_data *data, | |
1273 | cpu *processor, | |
1274 | unsigned_word cia) | |
1275 | { | |
5c04f4f7 MM |
1276 | /* unlike OpenFirmware this one can take an argument */ |
1277 | struct boot_args { | |
1278 | /*in*/ | |
1279 | unsigned_cell bootspec; | |
1280 | /*out*/ | |
1281 | } args; | |
1282 | char bootspec[1024]; | |
1283 | /* read in the arguments */ | |
1284 | if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia)) | |
1285 | cpu_halt(processor, cia, was_exited, -1); | |
1286 | if (args.bootspec != 0) | |
1287 | emul_read_string(bootspec, args.bootspec, sizeof(bootspec), | |
1288 | processor, cia); | |
1289 | else | |
1290 | strcpy(bootspec, "(null)"); | |
1291 | TRACE(trace_os_emul, ("boot - in bootspec=`%s'\n", bootspec)); | |
1292 | /* just report this and exit */ | |
1293 | printf_filtered("chrp: boot %s called, exiting.\n", bootspec); | |
1294 | cpu_halt(processor, cia, was_exited, 0); | |
52edddb9 MM |
1295 | return 0; |
1296 | } | |
1297 | ||
1298 | static int | |
1299 | chirp_emul_enter(os_emul_data *data, | |
1300 | cpu *processor, | |
1301 | unsigned_word cia) | |
1302 | { | |
5c04f4f7 | 1303 | error("chirp: enter method not implemented\n"); |
52edddb9 MM |
1304 | return 0; |
1305 | } | |
1306 | ||
1307 | static int | |
1308 | chirp_emul_exit(os_emul_data *data, | |
1309 | cpu *processor, | |
1310 | unsigned_word cia) | |
1311 | { | |
5c04f4f7 MM |
1312 | /* unlike OpenBoot this one can take an argument */ |
1313 | struct exit_args { | |
1314 | /*in*/ | |
1315 | signed_cell status; | |
1316 | /*out*/ | |
1317 | } args; | |
1318 | if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia)) | |
1319 | cpu_halt(processor, cia, was_exited, -1); | |
1320 | cpu_halt(processor, cia, was_exited, args.status); | |
52edddb9 MM |
1321 | return 0; |
1322 | } | |
1323 | ||
1324 | static int | |
1325 | chirp_emul_chain(os_emul_data *data, | |
1326 | cpu *processor, | |
1327 | unsigned_word cia) | |
1328 | { | |
5c04f4f7 | 1329 | error("chirp: chain method not implemented\n"); |
52edddb9 MM |
1330 | return 0; |
1331 | } | |
1332 | ||
1333 | ||
1334 | /* user interface */ | |
1335 | ||
1336 | static int | |
1337 | chirp_emul_interpret(os_emul_data *data, | |
1338 | cpu *processor, | |
1339 | unsigned_word cia) | |
1340 | { | |
5c04f4f7 | 1341 | error("chirp: interpret method not implemented\n"); |
52edddb9 MM |
1342 | return 0; |
1343 | } | |
1344 | ||
1345 | static int | |
1346 | chirp_emul_set_callback(os_emul_data *data, | |
1347 | cpu *processor, | |
1348 | unsigned_word cia) | |
1349 | { | |
5c04f4f7 | 1350 | error("chirp: set_callback method not implemented\n"); |
52edddb9 MM |
1351 | return 0; |
1352 | } | |
1353 | ||
1354 | static int | |
1355 | chirp_emul_set_symbol_lookup(os_emul_data *data, | |
1356 | cpu *processor, | |
1357 | unsigned_word cia) | |
1358 | { | |
5c04f4f7 | 1359 | error("chirp: set_symbol_lookup method not implemented\n"); |
52edddb9 MM |
1360 | return 0; |
1361 | } | |
1362 | ||
1363 | ||
1364 | /* Time */ | |
1365 | ||
1366 | static int | |
1367 | chirp_emul_milliseconds(os_emul_data *data, | |
1368 | cpu *processor, | |
1369 | unsigned_word cia) | |
1370 | { | |
1371 | struct test_args { | |
979c3c25 | 1372 | /*in*/ |
979c3c25 | 1373 | /*out*/ |
5c04f4f7 | 1374 | unsigned_cell ms; |
979c3c25 | 1375 | } args; |
52edddb9 | 1376 | unsigned64 time; |
979c3c25 | 1377 | /* read in the arguments */ |
5c04f4f7 | 1378 | if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia)) |
52edddb9 MM |
1379 | return -1; |
1380 | /* make up a number */ | |
5c04f4f7 MM |
1381 | time = event_queue_time(psim_event_queue(cpu_system(processor))) / 1000000; |
1382 | args.ms = time; | |
52edddb9 MM |
1383 | /* write the arguments back out */ |
1384 | TRACE(trace_os_emul, ("milliseconds - out - ms=%ld\n", | |
5c04f4f7 MM |
1385 | (unsigned long)args.ms)); |
1386 | chirp_write_h2t_args(&args, | |
1387 | sizeof(args), | |
1388 | data, | |
1389 | processor, cia); | |
93fac324 MM |
1390 | return 0; |
1391 | } | |
1392 | ||
1393 | ||
52edddb9 MM |
1394 | |
1395 | ||
1396 | static chirp_services services[] = { | |
1397 | ||
1398 | /* client interface */ | |
1399 | { "test", chirp_emul_test }, | |
1400 | ||
1401 | /* device tree */ | |
1402 | { "peer", chirp_emul_peer }, | |
979c3c25 | 1403 | { "child", chirp_emul_child }, |
52edddb9 MM |
1404 | { "parent", chirp_emul_parent }, |
1405 | { "instance-to-package", chirp_emul_instance_to_package }, | |
979c3c25 | 1406 | { "getproplen", chirp_emul_getproplen }, |
52edddb9 MM |
1407 | { "getprop", chirp_emul_getprop }, |
1408 | { "nextprop", chirp_emul_nextprop }, | |
5c04f4f7 | 1409 | /* { "setprop", chirp_emul_setprop }, */ |
52edddb9 MM |
1410 | { "canon", chirp_emul_canon }, |
1411 | { "finddevice", chirp_emul_finddevice }, | |
1412 | { "instance-to-path", chirp_emul_instance_to_path }, | |
1413 | { "package-to-path", chirp_emul_package_to_path }, | |
1414 | { "call-method", chirp_emul_call_method }, | |
1415 | ||
1416 | /* device I/O */ | |
979c3c25 | 1417 | { "open", chirp_emul_open }, |
52edddb9 | 1418 | { "close", chirp_emul_close }, |
979c3c25 | 1419 | { "read", chirp_emul_read }, |
93fac324 | 1420 | { "write", chirp_emul_write }, |
52edddb9 MM |
1421 | { "seek", chirp_emul_seek }, |
1422 | { "write", chirp_emul_write }, | |
1423 | ||
1424 | /* memory */ | |
1425 | { "claim", chirp_emul_claim }, | |
1426 | { "release", chirp_emul_release }, | |
1427 | ||
1428 | /* control transfer */ | |
1429 | { "boot", chirp_emul_boot }, | |
1430 | { "enter", chirp_emul_enter }, | |
1431 | { "exit", chirp_emul_exit }, | |
1432 | { "chain", chirp_emul_chain }, | |
1433 | ||
1434 | /* user interface */ | |
1435 | { "interpret", chirp_emul_interpret }, | |
1436 | { "set_callback", chirp_emul_set_callback }, | |
1437 | { "set_symbol_lookup", chirp_emul_set_symbol_lookup }, | |
1438 | ||
1439 | /* time */ | |
1440 | { "milliseconds", chirp_emul_milliseconds }, | |
1441 | ||
93fac324 MM |
1442 | { 0, /* sentinal */ }, |
1443 | }; | |
1444 | ||
1445 | ||
1446 | /* main handlers */ | |
1447 | ||
1448 | /* Any starting address greater than this is assumed to be an Chirp | |
1449 | rather than VEA */ | |
1450 | ||
1451 | #ifndef CHIRP_START_ADDRESS | |
1452 | #define CHIRP_START_ADDRESS 0x80000000 | |
1453 | #endif | |
5c04f4f7 MM |
1454 | #ifndef CHIRP_LOAD_BASE |
1455 | #define CHIRP_LOAD_BASE -1 | |
1456 | #endif | |
1457 | ||
93fac324 MM |
1458 | |
1459 | typedef struct _chirp_note_desc { | |
1460 | signed32 real_mode; | |
1461 | signed32 real_base; | |
1462 | signed32 real_size; | |
1463 | signed32 virt_base; | |
1464 | signed32 virt_size; | |
5c04f4f7 | 1465 | signed32 load_base; |
93fac324 MM |
1466 | } chirp_note_desc; |
1467 | ||
5c04f4f7 MM |
1468 | typedef enum { |
1469 | note_missing, | |
1470 | note_found, | |
1471 | note_correct, | |
1472 | } note_found_status; | |
93fac324 MM |
1473 | typedef struct _chirp_note { |
1474 | chirp_note_desc desc; | |
5c04f4f7 | 1475 | note_found_status found; |
93fac324 MM |
1476 | } chirp_note; |
1477 | ||
1478 | typedef struct _chirp_note_head { | |
1479 | unsigned32 namesz; | |
1480 | unsigned32 descsz; | |
1481 | unsigned32 type; | |
1482 | } chirp_note_head; | |
1483 | ||
1484 | static void | |
1485 | map_over_chirp_note(bfd *image, | |
1486 | asection *sect, | |
1487 | PTR obj) | |
1488 | { | |
1489 | chirp_note *note = (chirp_note*)obj; | |
1490 | if (strcmp(sect->name, ".note") == 0) { | |
1491 | chirp_note_head head; | |
1492 | char name[16]; | |
1493 | /* check the head */ | |
1494 | if (!bfd_get_section_contents(image, sect, | |
1495 | &head, 0, sizeof(head))) | |
1496 | return; | |
1497 | head.namesz = bfd_get_32(image, (void*)&head.namesz); | |
1498 | head.descsz = bfd_get_32(image, (void*)&head.descsz); | |
1499 | head.type = bfd_get_32(image, (void*)&head.type); | |
1500 | if (head.type != 0x1275) | |
1501 | return; | |
93fac324 | 1502 | /* check the name field */ |
52edddb9 | 1503 | if (head.namesz > sizeof(name)) { |
5c04f4f7 | 1504 | error("chirp: note name too long (%d > %d)\n", (int)head.namesz, sizeof(name)); |
52edddb9 | 1505 | } |
93fac324 | 1506 | if (!bfd_get_section_contents(image, sect, |
52edddb9 | 1507 | name, sizeof(head), head.namesz)) { |
5c04f4f7 | 1508 | error("chirp: note name unreadable\n"); |
52edddb9 MM |
1509 | } |
1510 | if (strcmp(name, "PowerPC") != 0) { | |
5c04f4f7 | 1511 | printf_filtered("chirp: note name (%s) not `PowerPC'\n", name); |
52edddb9 | 1512 | } |
5c04f4f7 MM |
1513 | /* check the size */ |
1514 | if (head.descsz == sizeof(note->desc) - sizeof(signed32)) { | |
1515 | sim_io_printf_filtered("chirp: note descriptor missing load-base\n"); | |
1516 | } | |
1517 | else if (head.descsz != sizeof(note->desc)) { | |
1518 | sim_io_printf_filtered("chirp: note descriptor of wrong size\n"); | |
1519 | note->found = note_found; | |
52edddb9 MM |
1520 | return; |
1521 | } | |
5c04f4f7 MM |
1522 | note->found = note_correct; |
1523 | /* get the contents */ | |
93fac324 | 1524 | if (!bfd_get_section_contents(image, sect, |
52edddb9 MM |
1525 | ¬e->desc, /* page align start */ |
1526 | ((sizeof(head) + head.namesz) + 3) & ~3, | |
1527 | head.descsz)) { | |
5c04f4f7 | 1528 | error("chirp: note descriptor unreadable\n"); |
52edddb9 | 1529 | } |
93fac324 MM |
1530 | note->desc.real_mode = bfd_get_32(image, (void*)¬e->desc.real_mode); |
1531 | note->desc.real_base = bfd_get_32(image, (void*)¬e->desc.real_base); | |
1532 | note->desc.real_size = bfd_get_32(image, (void*)¬e->desc.real_size); | |
1533 | note->desc.virt_base = bfd_get_32(image, (void*)¬e->desc.virt_base); | |
1534 | note->desc.virt_size = bfd_get_32(image, (void*)¬e->desc.virt_size); | |
5c04f4f7 MM |
1535 | if (head.descsz == sizeof(note->desc)) |
1536 | note->desc.load_base = bfd_get_32(image, (void*)¬e->desc.load_base); | |
1537 | else | |
1538 | note->desc.load_base = CHIRP_LOAD_BASE; | |
93fac324 MM |
1539 | } |
1540 | } | |
1541 | ||
1542 | ||
1543 | static os_emul_data * | |
1544 | emul_chirp_create(device *root, | |
1545 | bfd *image, | |
1546 | const char *name) | |
1547 | { | |
5c04f4f7 MM |
1548 | os_emul_data *chirp; |
1549 | device *node; | |
93fac324 | 1550 | chirp_note note; |
5c04f4f7 | 1551 | int i; |
93fac324 MM |
1552 | |
1553 | /* Sanity check that this really is the chosen emulation */ | |
1554 | if (name == NULL && image == NULL) | |
1555 | return NULL; | |
1556 | if (name != NULL | |
1557 | && strcmp(name, "ob") != 0 | |
1558 | && strcmp(name, "ieee1274") != 0 | |
1559 | && strcmp(name, "chrp") != 0 | |
1560 | && strcmp(name, "chirp") != 0 | |
1561 | && strcmp(name, "openboot") != 0) | |
1562 | return NULL; | |
1563 | ||
5c04f4f7 | 1564 | /* look for an elf note section, enter its values into the device tree */ |
93fac324 MM |
1565 | memset(¬e, 0, sizeof(note)); |
1566 | if (image != NULL) | |
1567 | bfd_map_over_sections(image, map_over_chirp_note, ¬e); | |
5c04f4f7 | 1568 | if (name == NULL && image != NULL && note.found == note_missing) |
93fac324 MM |
1569 | return NULL; |
1570 | ||
5c04f4f7 MM |
1571 | /* Assume that it is a chirp emulation */ |
1572 | ||
1573 | chirp = ZALLOC(os_emul_data); | |
1574 | chirp->root = root; | |
1575 | chirp->services = services; | |
1576 | ||
979c3c25 | 1577 | /* the root node */ |
5c04f4f7 | 1578 | tree_parse(root, "/name \"gpl,clayton"); |
979c3c25 | 1579 | |
5c04f4f7 MM |
1580 | /* default options */ |
1581 | emul_add_tree_options(root, image, "chirp", "oea", | |
1582 | 0 /*oea-interrupt-prefix*/); | |
979c3c25 | 1583 | |
5c04f4f7 MM |
1584 | /* hardware */ |
1585 | emul_add_tree_hardware(root); | |
1586 | ||
1587 | /* basic information */ | |
1588 | chirp->memory_size | |
1589 | = tree_find_integer_property(root, "/openprom/options/oea-memory-size"); | |
1590 | chirp->little_endian | |
1591 | = tree_find_boolean_property(root, "/options/little-endian?"); | |
1592 | chirp->floating_point_available | |
1593 | = tree_find_boolean_property(root, "/openprom/options/floating-point?"); | |
1594 | chirp->interrupt_prefix = | |
1595 | tree_find_integer_property(root, "/openprom/options/oea-interrupt-prefix"); | |
1596 | ||
1597 | ||
1598 | /* Perform an interum layout of the openboot firmware in memory */ | |
1599 | ||
1600 | ||
1601 | /* a page for firmware calls */ | |
1602 | chirp->sizeof_code = 4096; | |
1603 | chirp->code_offset = 0x4000; /* possible space for interrupt table */ | |
1604 | ||
1605 | /* the stack */ | |
1606 | chirp->sizeof_stack = 32 * 1024; | |
1607 | chirp->stack_offset = chirp->code_offset + chirp->sizeof_code; | |
1608 | ||
1609 | /* the hash table */ | |
1610 | if (!note.desc.real_mode) { | |
1611 | chirp->nr_page_table_entry_groups = (chirp->memory_size < 0x800000 | |
1612 | ? 1024 /* min allowed */ | |
1613 | : (chirp->memory_size / 4096 / 2)); | |
1614 | chirp->sizeof_htab = chirp->nr_page_table_entry_groups * 64; | |
1615 | } | |
1616 | chirp->htab_offset = chirp->stack_offset + chirp->sizeof_stack; | |
1617 | ||
1618 | /* the actual amount of space needed */ | |
1619 | chirp->real_size = chirp->htab_offset + chirp->sizeof_htab; | |
1620 | ||
1621 | ||
1622 | /* now go through and see if it fits in what is available */ | |
1623 | ||
1624 | ||
1625 | /* resolve real-mode? */ | |
1626 | if (note.found == note_correct) | |
1627 | chirp->real_mode = note.desc.real_mode; | |
1628 | else if (tree_find_property(root, "/options/real-mode?") != NULL) | |
1629 | chirp->real_mode = tree_find_boolean_property(root, "/options/real-mode?"); | |
1630 | else | |
1631 | chirp->real_mode = 0; | |
1632 | if (tree_find_property(root, "/options/real-mode?") != NULL) { | |
1633 | if (!chirp->real_mode | |
1634 | != !tree_find_boolean_property(root, "/options/real-mode?")) | |
1635 | error("chirp: /options/real-mode? conflicts with note section\n"); | |
1636 | } | |
1637 | else | |
1638 | tree_parse(root, "/options/real-mode? %s", | |
1639 | chirp->real_mode ? "true" : "false"); | |
1640 | ||
1641 | /* resolve real-base */ | |
1642 | if (note.found == note_correct | |
1643 | && note.desc.real_base != (signed32)-1) | |
1644 | chirp->real_base = note.desc.real_base; | |
1645 | else if (tree_find_property(root, "/options/real-base") != NULL) | |
1646 | chirp->real_base = tree_find_integer_property(root, "/options/real-base"); | |
1647 | else | |
1648 | chirp->real_base = chirp->memory_size - chirp->real_size; | |
1649 | if (tree_find_property(root, "/options/real-base") != NULL) { | |
1650 | if (chirp->real_base != tree_find_integer_property(root, "/options/real-base")) | |
1651 | error("chirp: /options/real-base conflicts with note section\n"); | |
1652 | } | |
1653 | else | |
1654 | tree_parse(root, "/options/real-base 0x%lx", | |
1655 | (unsigned long)chirp->real_base); | |
1656 | ||
1657 | /* resolve real-size */ | |
1658 | if (note.found == note_correct | |
1659 | && note.desc.real_size != (signed32)-1 | |
1660 | && note.desc.real_size != 0 | |
1661 | && chirp->real_size > note.desc.real_size) | |
1662 | error("chirp: insufficient physical memory for firmware\n"); | |
1663 | if (tree_find_property(root, "/options/real-size") != NULL) { | |
1664 | if (chirp->real_size > tree_find_integer_property(root, "/options/real-size")) | |
1665 | error("chirp: /options/real-size conflicts with note section\n"); | |
1666 | } | |
1667 | else | |
1668 | tree_parse(root, "/options/real-size 0x%lx", | |
1669 | (unsigned long)chirp->real_size); | |
1670 | ||
1671 | /* resolve virt-base */ | |
1672 | if (chirp->real_mode) | |
1673 | chirp->virt_base = chirp->real_base; | |
1674 | else if (note.found == note_correct && note.desc.virt_base != (signed32)-1) | |
1675 | chirp->virt_base = note.desc.virt_base; | |
1676 | else if (tree_find_property(root, "/options/virt-base") != NULL) | |
1677 | chirp->virt_base = tree_find_integer_property(root, "/options/virt-base"); | |
1678 | else | |
1679 | chirp->virt_base = CHIRP_START_ADDRESS; | |
1680 | if (tree_find_property(root, "/options/virt-base") != NULL) { | |
1681 | if (chirp->virt_base != tree_find_integer_property(root, "/options/virt-base")) | |
1682 | error("chirp: /options/virt-base conflicts with note section\n"); | |
1683 | } | |
1684 | else | |
1685 | tree_parse(root, "/options/virt-base 0x%lx", | |
1686 | chirp->real_mode ? -1 : (unsigned long)chirp->virt_base); | |
1687 | ||
1688 | /* resolve virt-size */ | |
1689 | chirp->virt_size = chirp->real_size; | |
1690 | if (note.found == note_correct | |
1691 | && note.desc.virt_size != (signed32)-1 | |
1692 | && note.desc.virt_size != 0 | |
1693 | && !chirp->real_mode | |
1694 | && chirp->virt_size > note.desc.virt_size) | |
1695 | error("chirp: insufficent virtual memory for firmware\n"); | |
1696 | if (tree_find_property(root, "/options/virt-size") != NULL) { | |
1697 | if (chirp->virt_size > tree_find_integer_property(root, "/options/virt-size")) | |
1698 | error("chirp: /options/virt-size conflicts with note section\n"); | |
1699 | } | |
1700 | else | |
1701 | tree_parse(root, "/options/virt-size 0x%lx", | |
1702 | chirp->real_mode ? -1 : (unsigned long)chirp->virt_size); | |
1703 | ||
1704 | /* resolve load-base */ | |
1705 | if (note.found == note_correct | |
1706 | && note.desc.load_base != (signed32)-1) | |
1707 | chirp->load_base = note.desc.load_base; | |
1708 | else if (tree_find_property(root, "/options/load-base") != NULL) | |
1709 | chirp->load_base = tree_find_integer_property(root, "/options/load-base"); | |
1710 | else | |
1711 | chirp->load_base = CHIRP_LOAD_BASE; | |
1712 | if (tree_find_property(root, "/options/load-base") != NULL) { | |
1713 | if (chirp->load_base != tree_find_integer_property(root, "/options/load-base")) | |
1714 | error("chirp: /options/load-base conflicts with note section\n"); | |
1715 | } | |
1716 | else | |
1717 | tree_parse(root, "/options/load-base 0x%lx", | |
1718 | (unsigned long)chirp->load_base); | |
1719 | ||
1720 | /* now adjust the preliminary firmware addresses to final values */ | |
1721 | chirp->code_ra = chirp->code_offset + chirp->real_base; | |
1722 | chirp->stack_ra = chirp->stack_offset + chirp->real_base; | |
1723 | chirp->htab_ra = chirp->htab_offset + chirp->real_base; | |
1724 | ||
1725 | /* the virtual addresses. In real mode these are real addresses. */ | |
1726 | ||
1727 | chirp->code_va = chirp->code_offset + chirp->virt_base; | |
1728 | chirp->stack_va = chirp->stack_offset + chirp->virt_base; | |
1729 | chirp->htab_va = chirp->htab_offset + chirp->virt_base; | |
1730 | ||
1731 | chirp->code_client_va = chirp->code_va; | |
1732 | chirp->code_client_ra = chirp->code_ra; | |
1733 | ||
1734 | chirp->code_callback_va = chirp->code_client_va + 16; | |
1735 | chirp->code_callback_ra = chirp->code_client_ra + 16; | |
1736 | ||
1737 | chirp->code_loop_va = chirp->code_callback_va + 16; | |
1738 | chirp->code_loop_ra = chirp->code_callback_ra + 16; | |
1739 | ||
1740 | /* initialization */ | |
1741 | ||
1742 | tree_parse(root, "/openprom/init"); | |
1743 | tree_parse(root, "/openprom/init/register"); | |
1744 | tree_parse(root, "/openprom/init/register/0.pc 0x%lx", | |
1745 | (unsigned long)bfd_get_start_address(image)); | |
1746 | tree_parse(root, "/openprom/init/register/pc 0x%lx", | |
1747 | (unsigned long)chirp->code_loop_va); | |
1748 | tree_parse(root, "/openprom/init/register/msr 0x%x", | |
1749 | (msr_machine_check_enable | |
1750 | | (chirp->real_mode | |
1751 | ? 0 | |
1752 | : (msr_instruction_relocate | |
1753 | | msr_data_relocate)) | |
1754 | | (chirp->little_endian | |
1755 | ? (msr_little_endian_mode | |
1756 | | msr_interrupt_little_endian_mode) | |
1757 | : 0) | |
1758 | | (chirp->floating_point_available | |
1759 | ? msr_floating_point_available | |
1760 | : 0) | |
1761 | | (chirp->interrupt_prefix | |
1762 | ? msr_interrupt_prefix | |
1763 | : 0) | |
1764 | )); | |
1765 | tree_parse(root, "/openprom/init/register/sdr1 0x%lx", | |
1766 | (unsigned long)(chirp->htab_ra | |
1767 | | MASK32(16, 22) | |
1768 | | ((chirp->sizeof_htab - 1) >> 16))); | |
1769 | /* make certain that the segment registers map straight through */ | |
1770 | for (i = 0; i < 16; i++) { | |
1771 | tree_parse(root, "/openprom/init/register/sr%d 0x%lx", | |
1772 | i, (unsigned long)i); | |
1773 | } | |
1774 | ||
1775 | /* establish an initial state for all processors */ | |
1776 | ||
1777 | ||
1778 | /* the client interface address */ | |
1779 | tree_parse(root, "/openprom/init/register/r5 0x%lx", | |
1780 | (unsigned long)chirp->code_client_va); | |
1781 | /* a stack */ | |
1782 | tree_parse(root, "/openprom/init/register/sp 0x%lx", | |
1783 | (unsigned long)(chirp->stack_va + chirp->sizeof_stack - 16)); | |
1784 | /* in chrp mode any arguments end up being concatinated */ | |
1785 | tree_parse(root, "/openprom/init/stack/stack-type chirp"); | |
1786 | ||
1787 | ||
1788 | /* client interface - emul-call followed by return instruction */ | |
1789 | ||
1790 | ||
1791 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1792 | (unsigned long)chirp->code_client_ra); | |
1793 | tree_parse(node, "./psim,description \"client-interface instruction"); | |
1794 | tree_parse(node, "./real-address 0x%lx", | |
1795 | (unsigned long)chirp->code_client_ra); | |
1796 | tree_parse(node, "./data 0x%lx", | |
1797 | (unsigned long)emul_call_instruction); | |
1798 | ||
1799 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1800 | (unsigned long)(chirp->code_client_ra + 4)); | |
1801 | tree_parse(node, "./psim,description \"client-interface return instruction"); | |
1802 | tree_parse(node, "./real-address 0x%lx", | |
1803 | (unsigned long)(chirp->code_client_ra + 4)); | |
1804 | tree_parse(node, "./data 0x%lx", | |
1805 | (unsigned long)emul_blr_instruction); | |
1806 | ||
1807 | ||
1808 | /* return address for client callbacks - an emul-call instruction | |
1809 | that is again followed by a return instruction */ | |
1810 | ||
1811 | ||
1812 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1813 | (unsigned long)chirp->code_callback_ra); | |
1814 | tree_parse(node, "./psim,description \"client-callback instruction"); | |
1815 | tree_parse(node, "./real-address 0x%lx", | |
1816 | (unsigned long)chirp->code_callback_ra); | |
1817 | tree_parse(node, "./data 0x%lx", | |
1818 | (unsigned long)emul_call_instruction); | |
1819 | ||
1820 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1821 | (unsigned long)(chirp->code_callback_ra + 4)); | |
1822 | tree_parse(node, "./psim,description \"client-callback return instruction"); | |
1823 | tree_parse(node, "./real-address 0x%lx", | |
1824 | (unsigned long)(chirp->code_callback_ra + 4)); | |
1825 | tree_parse(node, "./data 0x%lx", | |
1826 | (unsigned long)emul_blr_instruction); | |
1827 | ||
1828 | /* loop to keep other processors busy */ | |
1829 | ||
1830 | node = tree_parse(root, "/openprom/init/data@0x%lx", | |
1831 | (unsigned long)chirp->code_loop_ra); | |
1832 | tree_parse(node, "./psim,description \"processor busy loop"); | |
1833 | tree_parse(node, "./real-address 0x%lx", | |
1834 | (unsigned long)chirp->code_loop_ra); | |
1835 | tree_parse(node, "./data 0x%lx", | |
1836 | (unsigned long)emul_loop_instruction); | |
1837 | ||
1838 | /* hash table */ | |
1839 | ||
1840 | /* create a hash table */ | |
1841 | ||
1842 | if (!chirp->real_mode) { | |
1843 | node = tree_parse(root, "/openprom/init/htab@0x%lx", | |
1844 | (unsigned long)chirp->htab_ra); | |
1845 | tree_parse(node, "./claim 0"); | |
1846 | tree_parse(node, "./real-address 0x%lx", | |
1847 | (unsigned long)chirp->htab_ra); | |
1848 | tree_parse(node, "./nr-bytes 0x%lx", | |
1849 | (unsigned long)chirp->sizeof_htab); | |
1850 | } | |
1851 | ||
1852 | /* map in the stack */ | |
1853 | ||
1854 | if (!chirp->real_mode) { | |
1855 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1856 | (unsigned long)chirp->stack_ra); | |
1857 | tree_parse(node, "./psim,description \"map in the stack"); | |
1858 | tree_parse(node, "./claim 1"); | |
1859 | tree_parse(node, "./virtual-address 0x%lx", | |
1860 | (unsigned long)chirp->stack_va); | |
1861 | tree_parse(node, "./real-address 0x%lx", | |
1862 | (unsigned long)chirp->stack_ra); | |
1863 | tree_parse(node, "./nr-bytes 0x%lx", | |
1864 | (unsigned long)chirp->sizeof_stack); | |
1865 | tree_parse(node, "./wimg %d", 0x7); | |
1866 | tree_parse(node, "./pp %d", 0x2); | |
1867 | } | |
1868 | ||
1869 | /* map in the chrp openboot callback code */ | |
1870 | ||
1871 | if (!chirp->real_mode) { | |
1872 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1873 | (unsigned long)chirp->code_ra); | |
1874 | tree_parse(node, "./psim,description \"map in chrp openboot callback code"); | |
1875 | tree_parse(node, "./claim 1"); | |
1876 | tree_parse(node, "./virtual-address 0x%lx", | |
1877 | (unsigned long)chirp->code_va); | |
1878 | tree_parse(node, "./real-address 0x%lx", | |
1879 | (unsigned long)chirp->code_ra); | |
1880 | tree_parse(node, "./nr-bytes 0x%lx", | |
1881 | (unsigned long)chirp->sizeof_code); | |
1882 | tree_parse(node, "./wimg %d", 0x7); | |
1883 | tree_parse(node, "./pp %d", 0x2); | |
93fac324 | 1884 | } |
5c04f4f7 MM |
1885 | |
1886 | /* map in the program to run */ | |
1887 | ||
1888 | if (chirp->real_mode) { | |
1889 | node = tree_parse(node, "/openprom/init/load-binary"); | |
1890 | tree_parse(node, "./psim,description \"load the binary"); | |
1891 | tree_parse(node, "./file-name %s", bfd_get_filename(image)); | |
1892 | tree_parse(node, "./claim 1"); | |
1893 | } | |
1894 | else { | |
1895 | node = tree_parse(root, "/openprom/init/htab/pte@0x%lx", | |
1896 | (unsigned long)chirp->load_base); | |
1897 | tree_parse(node, "./psim,description \"load & map the binary"); | |
1898 | tree_parse(node, "./claim 1"); | |
1899 | tree_parse(node, "./file-name \"%s", bfd_get_filename(image)); | |
1900 | tree_parse(node, "./wimg %d", 0x7); | |
1901 | tree_parse(node, "./pp %d", 0x2); | |
1902 | } | |
1903 | ||
1904 | return chirp; | |
93fac324 MM |
1905 | } |
1906 | ||
1907 | static void | |
1908 | emul_chirp_init(os_emul_data *emul_data, | |
1909 | int nr_cpus) | |
1910 | { | |
1911 | emul_data->state = serving; | |
93fac324 MM |
1912 | } |
1913 | ||
1914 | static int | |
1915 | emul_chirp_instruction_call(cpu *processor, | |
979c3c25 MM |
1916 | unsigned_word cia, |
1917 | unsigned_word ra, | |
1918 | os_emul_data *emul_data) | |
93fac324 MM |
1919 | { |
1920 | unsigned_word service_name_addr; | |
1921 | unsigned_word result; | |
1922 | char service_buf[32]; | |
1923 | char *service_name; | |
1924 | chirp_services *service; | |
1925 | ||
1926 | switch (emul_data->state) { | |
979c3c25 | 1927 | |
93fac324 | 1928 | case serving: |
979c3c25 MM |
1929 | /* we are waiting on an OpenBoot request from the client program |
1930 | via the client interface */ | |
5c04f4f7 | 1931 | if (cia != emul_data->code_client_va) |
93fac324 MM |
1932 | return 0; |
1933 | emul_data->return_address = LR; | |
1934 | emul_data->arguments = cpu_registers(processor)->gpr[3]; | |
1935 | /* try to determine what to do */ | |
1936 | service_name_addr = emul_read_word(cpu_registers(processor)->gpr[3], | |
1937 | processor, cia); | |
1938 | service_name = emul_read_string(service_buf, service_name_addr, | |
1939 | sizeof(service_buf), processor, cia); | |
5c04f4f7 MM |
1940 | emul_data->n_args = emul_read_word(emul_data->arguments + sizeof(unsigned_cell), |
1941 | processor, cia); | |
1942 | emul_data->n_returns = emul_read_word(emul_data->arguments + 2 * sizeof(unsigned_cell), | |
1943 | processor, cia); | |
1944 | /* verify what was passed */ | |
1945 | if (service_name_addr == 0 | |
1946 | || service_name == NULL) { | |
1947 | error("OpenFirmware called with invalid (NULL) service name from 0x%lx with args 0x%lx\n", | |
1948 | (unsigned long)emul_data->return_address, | |
1949 | (unsigned long)emul_data->arguments); | |
1950 | } | |
1951 | if (emul_data->n_args > 6) { /* See iee1275 requirements on nr returns */ | |
1952 | error("OpenFirmware service %s called from 0x%lx with args 0x%lx, too many args (%d)\n", | |
1953 | (unsigned long)emul_data->return_address, | |
1954 | (unsigned long)emul_data->arguments, | |
1955 | emul_data->n_returns); | |
1956 | } | |
1957 | if (emul_data->n_returns > 6) { | |
1958 | error("OpenFirmware service %s called from 0x%lx with args 0x%lx, with too many returns (%d)\n", | |
1959 | (unsigned long)emul_data->return_address, | |
1960 | (unsigned long)emul_data->arguments, | |
1961 | emul_data->n_args); | |
1962 | } | |
1963 | /* look it up */ | |
979c3c25 MM |
1964 | TRACE(trace_os_emul, ("%s called from 0x%lx with args 0x%lx\n", |
1965 | service_name, | |
1966 | (unsigned long)emul_data->return_address, | |
1967 | (unsigned long)emul_data->arguments)); | |
93fac324 MM |
1968 | service = services; |
1969 | while (service->name != NULL && strcmp(service->name, service_name) != 0) | |
1970 | service++; | |
5c04f4f7 | 1971 | /* found or not? */ |
93fac324 | 1972 | if (service->name == NULL) { |
979c3c25 MM |
1973 | error("OpenBoot service `%s' not found\n", service_name); |
1974 | TRACE(trace_os_emul, ("%s not found\n", service_name)); | |
5c04f4f7 MM |
1975 | cpu_registers(processor)->gpr[3] = -1; |
1976 | } | |
1977 | else { | |
1978 | emul_data->service = service; | |
1979 | /* call upon it */ | |
1980 | result = service->handler(emul_data, processor, cia); | |
1981 | if (result != 0) | |
1982 | TRACE(trace_os_emul, ("%s aborted with %ld\n", service_name, (long)result)); | |
1983 | cpu_registers(processor)->gpr[3] = result; | |
93fac324 | 1984 | } |
979c3c25 MM |
1985 | break; |
1986 | ||
93fac324 MM |
1987 | default: |
1988 | error("emul_chirp_instruction_call() unknown internal state\n"); | |
1989 | result = -1; | |
1990 | break; | |
979c3c25 | 1991 | |
93fac324 MM |
1992 | } |
1993 | ||
52edddb9 | 1994 | /* return to caller - instruction following this is a function return */ |
93fac324 MM |
1995 | return 1; |
1996 | } | |
1997 | ||
1998 | const os_emul emul_chirp = { | |
1999 | "chirp", | |
2000 | emul_chirp_create, | |
2001 | emul_chirp_init, | |
2002 | NULL, /*system_call*/ | |
2003 | emul_chirp_instruction_call, | |
2004 | 0 /*data*/ | |
2005 | }; | |
2006 | ||
2007 | #endif |