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