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