1 /* Support for generating ACPI tables and passing them to Guests 2 * 3 * Copyright (C) 2015 Red Hat Inc 4 * 5 * Author: Michael S. Tsirkin <mst@redhat.com> 6 * Author: Igor Mammedov <imammedo@redhat.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include <glib/gprintf.h> 24 #include "hw/acpi/aml-build.h" 25 #include "qemu/bswap.h" 26 #include "qemu/bitops.h" 27 #include "sysemu/numa.h" 28 29 static GArray *build_alloc_array(void) 30 { 31 return g_array_new(false, true /* clear */, 1); 32 } 33 34 static void build_free_array(GArray *array) 35 { 36 g_array_free(array, true); 37 } 38 39 static void build_prepend_byte(GArray *array, uint8_t val) 40 { 41 g_array_prepend_val(array, val); 42 } 43 44 static void build_append_byte(GArray *array, uint8_t val) 45 { 46 g_array_append_val(array, val); 47 } 48 49 static void build_append_array(GArray *array, GArray *val) 50 { 51 g_array_append_vals(array, val->data, val->len); 52 } 53 54 #define ACPI_NAMESEG_LEN 4 55 56 static void 57 build_append_nameseg(GArray *array, const char *seg) 58 { 59 int len; 60 61 len = strlen(seg); 62 assert(len <= ACPI_NAMESEG_LEN); 63 64 g_array_append_vals(array, seg, len); 65 /* Pad up to ACPI_NAMESEG_LEN characters if necessary. */ 66 g_array_append_vals(array, "____", ACPI_NAMESEG_LEN - len); 67 } 68 69 static void GCC_FMT_ATTR(2, 0) 70 build_append_namestringv(GArray *array, const char *format, va_list ap) 71 { 72 char *s; 73 char **segs; 74 char **segs_iter; 75 int seg_count = 0; 76 77 s = g_strdup_vprintf(format, ap); 78 segs = g_strsplit(s, ".", 0); 79 g_free(s); 80 81 /* count segments */ 82 segs_iter = segs; 83 while (*segs_iter) { 84 ++segs_iter; 85 ++seg_count; 86 } 87 /* 88 * ACPI 5.0 spec: 20.2.2 Name Objects Encoding: 89 * "SegCount can be from 1 to 255" 90 */ 91 assert(seg_count > 0 && seg_count <= 255); 92 93 /* handle RootPath || PrefixPath */ 94 s = *segs; 95 while (*s == '\\' || *s == '^') { 96 build_append_byte(array, *s); 97 ++s; 98 } 99 100 switch (seg_count) { 101 case 1: 102 if (!*s) { 103 build_append_byte(array, 0x00); /* NullName */ 104 } else { 105 build_append_nameseg(array, s); 106 } 107 break; 108 109 case 2: 110 build_append_byte(array, 0x2E); /* DualNamePrefix */ 111 build_append_nameseg(array, s); 112 build_append_nameseg(array, segs[1]); 113 break; 114 default: 115 build_append_byte(array, 0x2F); /* MultiNamePrefix */ 116 build_append_byte(array, seg_count); 117 118 /* handle the 1st segment manually due to prefix/root path */ 119 build_append_nameseg(array, s); 120 121 /* add the rest of segments */ 122 segs_iter = segs + 1; 123 while (*segs_iter) { 124 build_append_nameseg(array, *segs_iter); 125 ++segs_iter; 126 } 127 break; 128 } 129 g_strfreev(segs); 130 } 131 132 GCC_FMT_ATTR(2, 3) 133 static void build_append_namestring(GArray *array, const char *format, ...) 134 { 135 va_list ap; 136 137 va_start(ap, format); 138 build_append_namestringv(array, format, ap); 139 va_end(ap); 140 } 141 142 /* 5.4 Definition Block Encoding */ 143 enum { 144 PACKAGE_LENGTH_1BYTE_SHIFT = 6, /* Up to 63 - use extra 2 bits. */ 145 PACKAGE_LENGTH_2BYTE_SHIFT = 4, 146 PACKAGE_LENGTH_3BYTE_SHIFT = 12, 147 PACKAGE_LENGTH_4BYTE_SHIFT = 20, 148 }; 149 150 static void 151 build_prepend_package_length(GArray *package, unsigned length, bool incl_self) 152 { 153 uint8_t byte; 154 unsigned length_bytes; 155 156 if (length + 1 < (1 << PACKAGE_LENGTH_1BYTE_SHIFT)) { 157 length_bytes = 1; 158 } else if (length + 2 < (1 << PACKAGE_LENGTH_3BYTE_SHIFT)) { 159 length_bytes = 2; 160 } else if (length + 3 < (1 << PACKAGE_LENGTH_4BYTE_SHIFT)) { 161 length_bytes = 3; 162 } else { 163 length_bytes = 4; 164 } 165 166 /* 167 * NamedField uses PkgLength encoding but it doesn't include length 168 * of PkgLength itself. 169 */ 170 if (incl_self) { 171 /* 172 * PkgLength is the length of the inclusive length of the data 173 * and PkgLength's length itself when used for terms with 174 * explitit length. 175 */ 176 length += length_bytes; 177 } 178 179 switch (length_bytes) { 180 case 1: 181 byte = length; 182 build_prepend_byte(package, byte); 183 return; 184 case 4: 185 byte = length >> PACKAGE_LENGTH_4BYTE_SHIFT; 186 build_prepend_byte(package, byte); 187 length &= (1 << PACKAGE_LENGTH_4BYTE_SHIFT) - 1; 188 /* fall through */ 189 case 3: 190 byte = length >> PACKAGE_LENGTH_3BYTE_SHIFT; 191 build_prepend_byte(package, byte); 192 length &= (1 << PACKAGE_LENGTH_3BYTE_SHIFT) - 1; 193 /* fall through */ 194 case 2: 195 byte = length >> PACKAGE_LENGTH_2BYTE_SHIFT; 196 build_prepend_byte(package, byte); 197 length &= (1 << PACKAGE_LENGTH_2BYTE_SHIFT) - 1; 198 /* fall through */ 199 } 200 /* 201 * Most significant two bits of byte zero indicate how many following bytes 202 * are in PkgLength encoding. 203 */ 204 byte = ((length_bytes - 1) << PACKAGE_LENGTH_1BYTE_SHIFT) | length; 205 build_prepend_byte(package, byte); 206 } 207 208 static void 209 build_append_pkg_length(GArray *array, unsigned length, bool incl_self) 210 { 211 GArray *tmp = build_alloc_array(); 212 213 build_prepend_package_length(tmp, length, incl_self); 214 build_append_array(array, tmp); 215 build_free_array(tmp); 216 } 217 218 static void build_package(GArray *package, uint8_t op) 219 { 220 build_prepend_package_length(package, package->len, true); 221 build_prepend_byte(package, op); 222 } 223 224 static void build_extop_package(GArray *package, uint8_t op) 225 { 226 build_package(package, op); 227 build_prepend_byte(package, 0x5B); /* ExtOpPrefix */ 228 } 229 230 void build_append_int_noprefix(GArray *table, uint64_t value, int size) 231 { 232 int i; 233 234 for (i = 0; i < size; ++i) { 235 build_append_byte(table, value & 0xFF); 236 value = value >> 8; 237 } 238 } 239 240 static void build_append_int(GArray *table, uint64_t value) 241 { 242 if (value == 0x00) { 243 build_append_byte(table, 0x00); /* ZeroOp */ 244 } else if (value == 0x01) { 245 build_append_byte(table, 0x01); /* OneOp */ 246 } else if (value <= 0xFF) { 247 build_append_byte(table, 0x0A); /* BytePrefix */ 248 build_append_int_noprefix(table, value, 1); 249 } else if (value <= 0xFFFF) { 250 build_append_byte(table, 0x0B); /* WordPrefix */ 251 build_append_int_noprefix(table, value, 2); 252 } else if (value <= 0xFFFFFFFF) { 253 build_append_byte(table, 0x0C); /* DWordPrefix */ 254 build_append_int_noprefix(table, value, 4); 255 } else { 256 build_append_byte(table, 0x0E); /* QWordPrefix */ 257 build_append_int_noprefix(table, value, 8); 258 } 259 } 260 261 /* Generic Address Structure (GAS) 262 * ACPI 2.0/3.0: 5.2.3.1 Generic Address Structure 263 * 2.0 compat note: 264 * @access_width must be 0, see ACPI 2.0:Table 5-1 265 */ 266 void build_append_gas(GArray *table, AmlAddressSpace as, 267 uint8_t bit_width, uint8_t bit_offset, 268 uint8_t access_width, uint64_t address) 269 { 270 build_append_int_noprefix(table, as, 1); 271 build_append_int_noprefix(table, bit_width, 1); 272 build_append_int_noprefix(table, bit_offset, 1); 273 build_append_int_noprefix(table, access_width, 1); 274 build_append_int_noprefix(table, address, 8); 275 } 276 277 /* 278 * Build NAME(XXXX, 0x00000000) where 0x00000000 is encoded as a dword, 279 * and return the offset to 0x00000000 for runtime patching. 280 * 281 * Warning: runtime patching is best avoided. Only use this as 282 * a replacement for DataTableRegion (for guests that don't 283 * support it). 284 */ 285 int 286 build_append_named_dword(GArray *array, const char *name_format, ...) 287 { 288 int offset; 289 va_list ap; 290 291 build_append_byte(array, 0x08); /* NameOp */ 292 va_start(ap, name_format); 293 build_append_namestringv(array, name_format, ap); 294 va_end(ap); 295 296 build_append_byte(array, 0x0C); /* DWordPrefix */ 297 298 offset = array->len; 299 build_append_int_noprefix(array, 0x00000000, 4); 300 assert(array->len == offset + 4); 301 302 return offset; 303 } 304 305 static GPtrArray *alloc_list; 306 307 static Aml *aml_alloc(void) 308 { 309 Aml *var = g_new0(typeof(*var), 1); 310 311 g_ptr_array_add(alloc_list, var); 312 var->block_flags = AML_NO_OPCODE; 313 var->buf = build_alloc_array(); 314 return var; 315 } 316 317 static Aml *aml_opcode(uint8_t op) 318 { 319 Aml *var = aml_alloc(); 320 321 var->op = op; 322 var->block_flags = AML_OPCODE; 323 return var; 324 } 325 326 static Aml *aml_bundle(uint8_t op, AmlBlockFlags flags) 327 { 328 Aml *var = aml_alloc(); 329 330 var->op = op; 331 var->block_flags = flags; 332 return var; 333 } 334 335 static void aml_free(gpointer data, gpointer user_data) 336 { 337 Aml *var = data; 338 build_free_array(var->buf); 339 g_free(var); 340 } 341 342 Aml *init_aml_allocator(void) 343 { 344 assert(!alloc_list); 345 alloc_list = g_ptr_array_new(); 346 return aml_alloc(); 347 } 348 349 void free_aml_allocator(void) 350 { 351 g_ptr_array_foreach(alloc_list, aml_free, NULL); 352 g_ptr_array_free(alloc_list, true); 353 alloc_list = 0; 354 } 355 356 /* pack data with DefBuffer encoding */ 357 static void build_buffer(GArray *array, uint8_t op) 358 { 359 GArray *data = build_alloc_array(); 360 361 build_append_int(data, array->len); 362 g_array_prepend_vals(array, data->data, data->len); 363 build_free_array(data); 364 build_package(array, op); 365 } 366 367 void aml_append(Aml *parent_ctx, Aml *child) 368 { 369 GArray *buf = build_alloc_array(); 370 build_append_array(buf, child->buf); 371 372 switch (child->block_flags) { 373 case AML_OPCODE: 374 build_append_byte(parent_ctx->buf, child->op); 375 break; 376 case AML_EXT_PACKAGE: 377 build_extop_package(buf, child->op); 378 break; 379 case AML_PACKAGE: 380 build_package(buf, child->op); 381 break; 382 case AML_RES_TEMPLATE: 383 build_append_byte(buf, 0x79); /* EndTag */ 384 /* 385 * checksum operations are treated as succeeded if checksum 386 * field is zero. [ACPI Spec 1.0b, 6.4.2.8 End Tag] 387 */ 388 build_append_byte(buf, 0); 389 /* fall through, to pack resources in buffer */ 390 case AML_BUFFER: 391 build_buffer(buf, child->op); 392 break; 393 case AML_NO_OPCODE: 394 break; 395 default: 396 assert(0); 397 break; 398 } 399 build_append_array(parent_ctx->buf, buf); 400 build_free_array(buf); 401 } 402 403 /* ACPI 1.0b: 16.2.5.1 Namespace Modifier Objects Encoding: DefScope */ 404 Aml *aml_scope(const char *name_format, ...) 405 { 406 va_list ap; 407 Aml *var = aml_bundle(0x10 /* ScopeOp */, AML_PACKAGE); 408 va_start(ap, name_format); 409 build_append_namestringv(var->buf, name_format, ap); 410 va_end(ap); 411 return var; 412 } 413 414 /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefReturn */ 415 Aml *aml_return(Aml *val) 416 { 417 Aml *var = aml_opcode(0xA4 /* ReturnOp */); 418 aml_append(var, val); 419 return var; 420 } 421 422 /* ACPI 1.0b: 16.2.6.3 Debug Objects Encoding: DebugObj */ 423 Aml *aml_debug(void) 424 { 425 Aml *var = aml_alloc(); 426 build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ 427 build_append_byte(var->buf, 0x31); /* DebugOp */ 428 return var; 429 } 430 431 /* 432 * ACPI 1.0b: 16.2.3 Data Objects Encoding: 433 * encodes: ByteConst, WordConst, DWordConst, QWordConst, ZeroOp, OneOp 434 */ 435 Aml *aml_int(const uint64_t val) 436 { 437 Aml *var = aml_alloc(); 438 build_append_int(var->buf, val); 439 return var; 440 } 441 442 /* 443 * helper to construct NameString, which returns Aml object 444 * for using with aml_append or other aml_* terms 445 */ 446 Aml *aml_name(const char *name_format, ...) 447 { 448 va_list ap; 449 Aml *var = aml_alloc(); 450 va_start(ap, name_format); 451 build_append_namestringv(var->buf, name_format, ap); 452 va_end(ap); 453 return var; 454 } 455 456 /* ACPI 1.0b: 16.2.5.1 Namespace Modifier Objects Encoding: DefName */ 457 Aml *aml_name_decl(const char *name, Aml *val) 458 { 459 Aml *var = aml_opcode(0x08 /* NameOp */); 460 build_append_namestring(var->buf, "%s", name); 461 aml_append(var, val); 462 return var; 463 } 464 465 /* ACPI 1.0b: 16.2.6.1 Arg Objects Encoding */ 466 Aml *aml_arg(int pos) 467 { 468 uint8_t op = 0x68 /* ARG0 op */ + pos; 469 470 assert(pos <= 6); 471 return aml_opcode(op); 472 } 473 474 /* ACPI 2.0a: 17.2.4.4 Type 2 Opcodes Encoding: DefToInteger */ 475 Aml *aml_to_integer(Aml *arg) 476 { 477 Aml *var = aml_opcode(0x99 /* ToIntegerOp */); 478 aml_append(var, arg); 479 build_append_byte(var->buf, 0x00 /* NullNameOp */); 480 return var; 481 } 482 483 /* ACPI 2.0a: 17.2.4.4 Type 2 Opcodes Encoding: DefToHexString */ 484 Aml *aml_to_hexstring(Aml *src, Aml *dst) 485 { 486 Aml *var = aml_opcode(0x98 /* ToHexStringOp */); 487 aml_append(var, src); 488 if (dst) { 489 aml_append(var, dst); 490 } else { 491 build_append_byte(var->buf, 0x00 /* NullNameOp */); 492 } 493 return var; 494 } 495 496 /* ACPI 2.0a: 17.2.4.4 Type 2 Opcodes Encoding: DefToBuffer */ 497 Aml *aml_to_buffer(Aml *src, Aml *dst) 498 { 499 Aml *var = aml_opcode(0x96 /* ToBufferOp */); 500 aml_append(var, src); 501 if (dst) { 502 aml_append(var, dst); 503 } else { 504 build_append_byte(var->buf, 0x00 /* NullNameOp */); 505 } 506 return var; 507 } 508 509 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefStore */ 510 Aml *aml_store(Aml *val, Aml *target) 511 { 512 Aml *var = aml_opcode(0x70 /* StoreOp */); 513 aml_append(var, val); 514 aml_append(var, target); 515 return var; 516 } 517 518 /** 519 * build_opcode_2arg_dst: 520 * @op: 1-byte opcode 521 * @arg1: 1st operand 522 * @arg2: 2nd operand 523 * @dst: optional target to store to, set to NULL if it's not required 524 * 525 * An internal helper to compose AML terms that have 526 * "Op Operand Operand Target" 527 * pattern. 528 * 529 * Returns: The newly allocated and composed according to patter Aml object. 530 */ 531 static Aml * 532 build_opcode_2arg_dst(uint8_t op, Aml *arg1, Aml *arg2, Aml *dst) 533 { 534 Aml *var = aml_opcode(op); 535 aml_append(var, arg1); 536 aml_append(var, arg2); 537 if (dst) { 538 aml_append(var, dst); 539 } else { 540 build_append_byte(var->buf, 0x00 /* NullNameOp */); 541 } 542 return var; 543 } 544 545 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefAnd */ 546 Aml *aml_and(Aml *arg1, Aml *arg2, Aml *dst) 547 { 548 return build_opcode_2arg_dst(0x7B /* AndOp */, arg1, arg2, dst); 549 } 550 551 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefOr */ 552 Aml *aml_or(Aml *arg1, Aml *arg2, Aml *dst) 553 { 554 return build_opcode_2arg_dst(0x7D /* OrOp */, arg1, arg2, dst); 555 } 556 557 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLOr */ 558 Aml *aml_lor(Aml *arg1, Aml *arg2) 559 { 560 Aml *var = aml_opcode(0x91 /* LOrOp */); 561 aml_append(var, arg1); 562 aml_append(var, arg2); 563 return var; 564 } 565 566 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefShiftLeft */ 567 Aml *aml_shiftleft(Aml *arg1, Aml *count) 568 { 569 return build_opcode_2arg_dst(0x79 /* ShiftLeftOp */, arg1, count, NULL); 570 } 571 572 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefShiftRight */ 573 Aml *aml_shiftright(Aml *arg1, Aml *count, Aml *dst) 574 { 575 return build_opcode_2arg_dst(0x7A /* ShiftRightOp */, arg1, count, dst); 576 } 577 578 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLLess */ 579 Aml *aml_lless(Aml *arg1, Aml *arg2) 580 { 581 Aml *var = aml_opcode(0x95 /* LLessOp */); 582 aml_append(var, arg1); 583 aml_append(var, arg2); 584 return var; 585 } 586 587 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefAdd */ 588 Aml *aml_add(Aml *arg1, Aml *arg2, Aml *dst) 589 { 590 return build_opcode_2arg_dst(0x72 /* AddOp */, arg1, arg2, dst); 591 } 592 593 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefSubtract */ 594 Aml *aml_subtract(Aml *arg1, Aml *arg2, Aml *dst) 595 { 596 return build_opcode_2arg_dst(0x74 /* SubtractOp */, arg1, arg2, dst); 597 } 598 599 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefIncrement */ 600 Aml *aml_increment(Aml *arg) 601 { 602 Aml *var = aml_opcode(0x75 /* IncrementOp */); 603 aml_append(var, arg); 604 return var; 605 } 606 607 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefDecrement */ 608 Aml *aml_decrement(Aml *arg) 609 { 610 Aml *var = aml_opcode(0x76 /* DecrementOp */); 611 aml_append(var, arg); 612 return var; 613 } 614 615 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefIndex */ 616 Aml *aml_index(Aml *arg1, Aml *idx) 617 { 618 return build_opcode_2arg_dst(0x88 /* IndexOp */, arg1, idx, NULL); 619 } 620 621 /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefNotify */ 622 Aml *aml_notify(Aml *arg1, Aml *arg2) 623 { 624 Aml *var = aml_opcode(0x86 /* NotifyOp */); 625 aml_append(var, arg1); 626 aml_append(var, arg2); 627 return var; 628 } 629 630 /* helper to call method without argument */ 631 Aml *aml_call0(const char *method) 632 { 633 Aml *var = aml_alloc(); 634 build_append_namestring(var->buf, "%s", method); 635 return var; 636 } 637 638 /* helper to call method with 1 argument */ 639 Aml *aml_call1(const char *method, Aml *arg1) 640 { 641 Aml *var = aml_alloc(); 642 build_append_namestring(var->buf, "%s", method); 643 aml_append(var, arg1); 644 return var; 645 } 646 647 /* helper to call method with 2 arguments */ 648 Aml *aml_call2(const char *method, Aml *arg1, Aml *arg2) 649 { 650 Aml *var = aml_alloc(); 651 build_append_namestring(var->buf, "%s", method); 652 aml_append(var, arg1); 653 aml_append(var, arg2); 654 return var; 655 } 656 657 /* helper to call method with 3 arguments */ 658 Aml *aml_call3(const char *method, Aml *arg1, Aml *arg2, Aml *arg3) 659 { 660 Aml *var = aml_alloc(); 661 build_append_namestring(var->buf, "%s", method); 662 aml_append(var, arg1); 663 aml_append(var, arg2); 664 aml_append(var, arg3); 665 return var; 666 } 667 668 /* helper to call method with 4 arguments */ 669 Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4) 670 { 671 Aml *var = aml_alloc(); 672 build_append_namestring(var->buf, "%s", method); 673 aml_append(var, arg1); 674 aml_append(var, arg2); 675 aml_append(var, arg3); 676 aml_append(var, arg4); 677 return var; 678 } 679 680 /* helper to call method with 5 arguments */ 681 Aml *aml_call5(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4, 682 Aml *arg5) 683 { 684 Aml *var = aml_alloc(); 685 build_append_namestring(var->buf, "%s", method); 686 aml_append(var, arg1); 687 aml_append(var, arg2); 688 aml_append(var, arg3); 689 aml_append(var, arg4); 690 aml_append(var, arg5); 691 return var; 692 } 693 694 /* 695 * ACPI 5.0: 6.4.3.8.1 GPIO Connection Descriptor 696 * Type 1, Large Item Name 0xC 697 */ 698 699 static Aml *aml_gpio_connection(AmlGpioConnectionType type, 700 AmlConsumerAndProducer con_and_pro, 701 uint8_t flags, AmlPinConfig pin_config, 702 uint16_t output_drive, 703 uint16_t debounce_timeout, 704 const uint32_t pin_list[], uint32_t pin_count, 705 const char *resource_source_name, 706 const uint8_t *vendor_data, 707 uint16_t vendor_data_len) 708 { 709 Aml *var = aml_alloc(); 710 const uint16_t min_desc_len = 0x16; 711 uint16_t resource_source_name_len, length; 712 uint16_t pin_table_offset, resource_source_name_offset, vendor_data_offset; 713 uint32_t i; 714 715 assert(resource_source_name); 716 resource_source_name_len = strlen(resource_source_name) + 1; 717 length = min_desc_len + resource_source_name_len + vendor_data_len; 718 pin_table_offset = min_desc_len + 1; 719 resource_source_name_offset = pin_table_offset + pin_count * 2; 720 vendor_data_offset = resource_source_name_offset + resource_source_name_len; 721 722 build_append_byte(var->buf, 0x8C); /* GPIO Connection Descriptor */ 723 build_append_int_noprefix(var->buf, length, 2); /* Length */ 724 build_append_byte(var->buf, 1); /* Revision ID */ 725 build_append_byte(var->buf, type); /* GPIO Connection Type */ 726 /* General Flags (2 bytes) */ 727 build_append_int_noprefix(var->buf, con_and_pro, 2); 728 /* Interrupt and IO Flags (2 bytes) */ 729 build_append_int_noprefix(var->buf, flags, 2); 730 /* Pin Configuration 0 = Default 1 = Pull-up 2 = Pull-down 3 = No Pull */ 731 build_append_byte(var->buf, pin_config); 732 /* Output Drive Strength (2 bytes) */ 733 build_append_int_noprefix(var->buf, output_drive, 2); 734 /* Debounce Timeout (2 bytes) */ 735 build_append_int_noprefix(var->buf, debounce_timeout, 2); 736 /* Pin Table Offset (2 bytes) */ 737 build_append_int_noprefix(var->buf, pin_table_offset, 2); 738 build_append_byte(var->buf, 0); /* Resource Source Index */ 739 /* Resource Source Name Offset (2 bytes) */ 740 build_append_int_noprefix(var->buf, resource_source_name_offset, 2); 741 /* Vendor Data Offset (2 bytes) */ 742 build_append_int_noprefix(var->buf, vendor_data_offset, 2); 743 /* Vendor Data Length (2 bytes) */ 744 build_append_int_noprefix(var->buf, vendor_data_len, 2); 745 /* Pin Number (2n bytes)*/ 746 for (i = 0; i < pin_count; i++) { 747 build_append_int_noprefix(var->buf, pin_list[i], 2); 748 } 749 750 /* Resource Source Name */ 751 build_append_namestring(var->buf, "%s", resource_source_name); 752 build_append_byte(var->buf, '\0'); 753 754 /* Vendor-defined Data */ 755 if (vendor_data != NULL) { 756 g_array_append_vals(var->buf, vendor_data, vendor_data_len); 757 } 758 759 return var; 760 } 761 762 /* 763 * ACPI 5.0: 19.5.53 764 * GpioInt(GPIO Interrupt Connection Resource Descriptor Macro) 765 */ 766 Aml *aml_gpio_int(AmlConsumerAndProducer con_and_pro, 767 AmlLevelAndEdge edge_level, 768 AmlActiveHighAndLow active_level, AmlShared shared, 769 AmlPinConfig pin_config, uint16_t debounce_timeout, 770 const uint32_t pin_list[], uint32_t pin_count, 771 const char *resource_source_name, 772 const uint8_t *vendor_data, uint16_t vendor_data_len) 773 { 774 uint8_t flags = edge_level | (active_level << 1) | (shared << 3); 775 776 return aml_gpio_connection(AML_INTERRUPT_CONNECTION, con_and_pro, flags, 777 pin_config, 0, debounce_timeout, pin_list, 778 pin_count, resource_source_name, vendor_data, 779 vendor_data_len); 780 } 781 782 /* 783 * ACPI 1.0b: 6.4.3.4 32-Bit Fixed Location Memory Range Descriptor 784 * (Type 1, Large Item Name 0x6) 785 */ 786 Aml *aml_memory32_fixed(uint32_t addr, uint32_t size, 787 AmlReadAndWrite read_and_write) 788 { 789 Aml *var = aml_alloc(); 790 build_append_byte(var->buf, 0x86); /* Memory32Fixed Resource Descriptor */ 791 build_append_byte(var->buf, 9); /* Length, bits[7:0] value = 9 */ 792 build_append_byte(var->buf, 0); /* Length, bits[15:8] value = 0 */ 793 build_append_byte(var->buf, read_and_write); /* Write status, 1 rw 0 ro */ 794 795 /* Range base address */ 796 build_append_byte(var->buf, extract32(addr, 0, 8)); /* bits[7:0] */ 797 build_append_byte(var->buf, extract32(addr, 8, 8)); /* bits[15:8] */ 798 build_append_byte(var->buf, extract32(addr, 16, 8)); /* bits[23:16] */ 799 build_append_byte(var->buf, extract32(addr, 24, 8)); /* bits[31:24] */ 800 801 /* Range length */ 802 build_append_byte(var->buf, extract32(size, 0, 8)); /* bits[7:0] */ 803 build_append_byte(var->buf, extract32(size, 8, 8)); /* bits[15:8] */ 804 build_append_byte(var->buf, extract32(size, 16, 8)); /* bits[23:16] */ 805 build_append_byte(var->buf, extract32(size, 24, 8)); /* bits[31:24] */ 806 return var; 807 } 808 809 /* 810 * ACPI 5.0: 6.4.3.6 Extended Interrupt Descriptor 811 * Type 1, Large Item Name 0x9 812 */ 813 Aml *aml_interrupt(AmlConsumerAndProducer con_and_pro, 814 AmlLevelAndEdge level_and_edge, 815 AmlActiveHighAndLow high_and_low, AmlShared shared, 816 uint32_t *irq_list, uint8_t irq_count) 817 { 818 int i; 819 Aml *var = aml_alloc(); 820 uint8_t irq_flags = con_and_pro | (level_and_edge << 1) 821 | (high_and_low << 2) | (shared << 3); 822 const int header_bytes_in_len = 2; 823 uint16_t len = header_bytes_in_len + irq_count * sizeof(uint32_t); 824 825 assert(irq_count > 0); 826 827 build_append_byte(var->buf, 0x89); /* Extended irq descriptor */ 828 build_append_byte(var->buf, len & 0xFF); /* Length, bits[7:0] */ 829 build_append_byte(var->buf, len >> 8); /* Length, bits[15:8] */ 830 build_append_byte(var->buf, irq_flags); /* Interrupt Vector Information. */ 831 build_append_byte(var->buf, irq_count); /* Interrupt table length */ 832 833 /* Interrupt Number List */ 834 for (i = 0; i < irq_count; i++) { 835 build_append_int_noprefix(var->buf, irq_list[i], 4); 836 } 837 return var; 838 } 839 840 /* ACPI 1.0b: 6.4.2.5 I/O Port Descriptor */ 841 Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base, 842 uint8_t aln, uint8_t len) 843 { 844 Aml *var = aml_alloc(); 845 build_append_byte(var->buf, 0x47); /* IO port descriptor */ 846 build_append_byte(var->buf, dec); 847 build_append_byte(var->buf, min_base & 0xff); 848 build_append_byte(var->buf, (min_base >> 8) & 0xff); 849 build_append_byte(var->buf, max_base & 0xff); 850 build_append_byte(var->buf, (max_base >> 8) & 0xff); 851 build_append_byte(var->buf, aln); 852 build_append_byte(var->buf, len); 853 return var; 854 } 855 856 /* 857 * ACPI 1.0b: 6.4.2.1.1 ASL Macro for IRQ Descriptor 858 * 859 * More verbose description at: 860 * ACPI 5.0: 19.5.64 IRQNoFlags (Interrupt Resource Descriptor Macro) 861 * 6.4.2.1 IRQ Descriptor 862 */ 863 Aml *aml_irq_no_flags(uint8_t irq) 864 { 865 uint16_t irq_mask; 866 Aml *var = aml_alloc(); 867 868 assert(irq < 16); 869 build_append_byte(var->buf, 0x22); /* IRQ descriptor 2 byte form */ 870 871 irq_mask = 1U << irq; 872 build_append_byte(var->buf, irq_mask & 0xFF); /* IRQ mask bits[7:0] */ 873 build_append_byte(var->buf, irq_mask >> 8); /* IRQ mask bits[15:8] */ 874 return var; 875 } 876 877 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLNot */ 878 Aml *aml_lnot(Aml *arg) 879 { 880 Aml *var = aml_opcode(0x92 /* LNotOp */); 881 aml_append(var, arg); 882 return var; 883 } 884 885 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLEqual */ 886 Aml *aml_equal(Aml *arg1, Aml *arg2) 887 { 888 Aml *var = aml_opcode(0x93 /* LequalOp */); 889 aml_append(var, arg1); 890 aml_append(var, arg2); 891 return var; 892 } 893 894 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLGreater */ 895 Aml *aml_lgreater(Aml *arg1, Aml *arg2) 896 { 897 Aml *var = aml_opcode(0x94 /* LGreaterOp */); 898 aml_append(var, arg1); 899 aml_append(var, arg2); 900 return var; 901 } 902 903 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLGreaterEqual */ 904 Aml *aml_lgreater_equal(Aml *arg1, Aml *arg2) 905 { 906 /* LGreaterEqualOp := LNotOp LLessOp */ 907 Aml *var = aml_opcode(0x92 /* LNotOp */); 908 build_append_byte(var->buf, 0x95 /* LLessOp */); 909 aml_append(var, arg1); 910 aml_append(var, arg2); 911 return var; 912 } 913 914 /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefIfElse */ 915 Aml *aml_if(Aml *predicate) 916 { 917 Aml *var = aml_bundle(0xA0 /* IfOp */, AML_PACKAGE); 918 aml_append(var, predicate); 919 return var; 920 } 921 922 /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefElse */ 923 Aml *aml_else(void) 924 { 925 Aml *var = aml_bundle(0xA1 /* ElseOp */, AML_PACKAGE); 926 return var; 927 } 928 929 /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefWhile */ 930 Aml *aml_while(Aml *predicate) 931 { 932 Aml *var = aml_bundle(0xA2 /* WhileOp */, AML_PACKAGE); 933 aml_append(var, predicate); 934 return var; 935 } 936 937 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefMethod */ 938 Aml *aml_method(const char *name, int arg_count, AmlSerializeFlag sflag) 939 { 940 Aml *var = aml_bundle(0x14 /* MethodOp */, AML_PACKAGE); 941 int methodflags; 942 943 /* 944 * MethodFlags: 945 * bit 0-2: ArgCount (0-7) 946 * bit 3: SerializeFlag 947 * 0: NotSerialized 948 * 1: Serialized 949 * bit 4-7: reserved (must be 0) 950 */ 951 assert(arg_count < 8); 952 methodflags = arg_count | (sflag << 3); 953 954 build_append_namestring(var->buf, "%s", name); 955 build_append_byte(var->buf, methodflags); /* MethodFlags: ArgCount */ 956 return var; 957 } 958 959 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefDevice */ 960 Aml *aml_device(const char *name_format, ...) 961 { 962 va_list ap; 963 Aml *var = aml_bundle(0x82 /* DeviceOp */, AML_EXT_PACKAGE); 964 va_start(ap, name_format); 965 build_append_namestringv(var->buf, name_format, ap); 966 va_end(ap); 967 return var; 968 } 969 970 /* ACPI 1.0b: 6.4.1 ASL Macros for Resource Descriptors */ 971 Aml *aml_resource_template(void) 972 { 973 /* ResourceTemplate is a buffer of Resources with EndTag at the end */ 974 Aml *var = aml_bundle(0x11 /* BufferOp */, AML_RES_TEMPLATE); 975 return var; 976 } 977 978 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefBuffer 979 * Pass byte_list as NULL to request uninitialized buffer to reserve space. 980 */ 981 Aml *aml_buffer(int buffer_size, uint8_t *byte_list) 982 { 983 int i; 984 Aml *var = aml_bundle(0x11 /* BufferOp */, AML_BUFFER); 985 986 for (i = 0; i < buffer_size; i++) { 987 if (byte_list == NULL) { 988 build_append_byte(var->buf, 0x0); 989 } else { 990 build_append_byte(var->buf, byte_list[i]); 991 } 992 } 993 994 return var; 995 } 996 997 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefPackage */ 998 Aml *aml_package(uint8_t num_elements) 999 { 1000 Aml *var = aml_bundle(0x12 /* PackageOp */, AML_PACKAGE); 1001 build_append_byte(var->buf, num_elements); 1002 return var; 1003 } 1004 1005 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefOpRegion */ 1006 Aml *aml_operation_region(const char *name, AmlRegionSpace rs, 1007 Aml *offset, uint32_t len) 1008 { 1009 Aml *var = aml_alloc(); 1010 build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ 1011 build_append_byte(var->buf, 0x80); /* OpRegionOp */ 1012 build_append_namestring(var->buf, "%s", name); 1013 build_append_byte(var->buf, rs); 1014 aml_append(var, offset); 1015 build_append_int(var->buf, len); 1016 return var; 1017 } 1018 1019 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: NamedField */ 1020 Aml *aml_named_field(const char *name, unsigned length) 1021 { 1022 Aml *var = aml_alloc(); 1023 build_append_nameseg(var->buf, name); 1024 build_append_pkg_length(var->buf, length, false); 1025 return var; 1026 } 1027 1028 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: ReservedField */ 1029 Aml *aml_reserved_field(unsigned length) 1030 { 1031 Aml *var = aml_alloc(); 1032 /* ReservedField := 0x00 PkgLength */ 1033 build_append_byte(var->buf, 0x00); 1034 build_append_pkg_length(var->buf, length, false); 1035 return var; 1036 } 1037 1038 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefField */ 1039 Aml *aml_field(const char *name, AmlAccessType type, AmlLockRule lock, 1040 AmlUpdateRule rule) 1041 { 1042 Aml *var = aml_bundle(0x81 /* FieldOp */, AML_EXT_PACKAGE); 1043 uint8_t flags = rule << 5 | type; 1044 1045 flags |= lock << 4; /* LockRule at 4 bit offset */ 1046 1047 build_append_namestring(var->buf, "%s", name); 1048 build_append_byte(var->buf, flags); 1049 return var; 1050 } 1051 1052 static 1053 Aml *create_field_common(int opcode, Aml *srcbuf, Aml *index, const char *name) 1054 { 1055 Aml *var = aml_opcode(opcode); 1056 aml_append(var, srcbuf); 1057 aml_append(var, index); 1058 build_append_namestring(var->buf, "%s", name); 1059 return var; 1060 } 1061 1062 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateField */ 1063 Aml *aml_create_field(Aml *srcbuf, Aml *bit_index, Aml *num_bits, 1064 const char *name) 1065 { 1066 Aml *var = aml_alloc(); 1067 build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ 1068 build_append_byte(var->buf, 0x13); /* CreateFieldOp */ 1069 aml_append(var, srcbuf); 1070 aml_append(var, bit_index); 1071 aml_append(var, num_bits); 1072 build_append_namestring(var->buf, "%s", name); 1073 return var; 1074 } 1075 1076 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateDWordField */ 1077 Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name) 1078 { 1079 return create_field_common(0x8A /* CreateDWordFieldOp */, 1080 srcbuf, index, name); 1081 } 1082 1083 /* ACPI 2.0a: 17.2.4.2 Named Objects Encoding: DefCreateQWordField */ 1084 Aml *aml_create_qword_field(Aml *srcbuf, Aml *index, const char *name) 1085 { 1086 return create_field_common(0x8F /* CreateQWordFieldOp */, 1087 srcbuf, index, name); 1088 } 1089 1090 /* ACPI 1.0b: 16.2.3 Data Objects Encoding: String */ 1091 Aml *aml_string(const char *name_format, ...) 1092 { 1093 Aml *var = aml_opcode(0x0D /* StringPrefix */); 1094 va_list ap; 1095 char *s; 1096 int len; 1097 1098 va_start(ap, name_format); 1099 len = g_vasprintf(&s, name_format, ap); 1100 va_end(ap); 1101 1102 g_array_append_vals(var->buf, s, len + 1); 1103 g_free(s); 1104 1105 return var; 1106 } 1107 1108 /* ACPI 1.0b: 16.2.6.2 Local Objects Encoding */ 1109 Aml *aml_local(int num) 1110 { 1111 uint8_t op = 0x60 /* Local0Op */ + num; 1112 1113 assert(num <= 7); 1114 return aml_opcode(op); 1115 } 1116 1117 /* ACPI 2.0a: 17.2.2 Data Objects Encoding: DefVarPackage */ 1118 Aml *aml_varpackage(uint32_t num_elements) 1119 { 1120 Aml *var = aml_bundle(0x13 /* VarPackageOp */, AML_PACKAGE); 1121 build_append_int(var->buf, num_elements); 1122 return var; 1123 } 1124 1125 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefProcessor */ 1126 Aml *aml_processor(uint8_t proc_id, uint32_t pblk_addr, uint8_t pblk_len, 1127 const char *name_format, ...) 1128 { 1129 va_list ap; 1130 Aml *var = aml_bundle(0x83 /* ProcessorOp */, AML_EXT_PACKAGE); 1131 va_start(ap, name_format); 1132 build_append_namestringv(var->buf, name_format, ap); 1133 va_end(ap); 1134 build_append_byte(var->buf, proc_id); /* ProcID */ 1135 build_append_int_noprefix(var->buf, pblk_addr, sizeof(pblk_addr)); 1136 build_append_byte(var->buf, pblk_len); /* PblkLen */ 1137 return var; 1138 } 1139 1140 static uint8_t Hex2Digit(char c) 1141 { 1142 if (c >= 'A') { 1143 return c - 'A' + 10; 1144 } 1145 1146 return c - '0'; 1147 } 1148 1149 /* ACPI 1.0b: 15.2.3.6.4.1 EISAID Macro - Convert EISA ID String To Integer */ 1150 Aml *aml_eisaid(const char *str) 1151 { 1152 Aml *var = aml_alloc(); 1153 uint32_t id; 1154 1155 g_assert(strlen(str) == 7); 1156 id = (str[0] - 0x40) << 26 | 1157 (str[1] - 0x40) << 21 | 1158 (str[2] - 0x40) << 16 | 1159 Hex2Digit(str[3]) << 12 | 1160 Hex2Digit(str[4]) << 8 | 1161 Hex2Digit(str[5]) << 4 | 1162 Hex2Digit(str[6]); 1163 1164 build_append_byte(var->buf, 0x0C); /* DWordPrefix */ 1165 build_append_int_noprefix(var->buf, bswap32(id), sizeof(id)); 1166 return var; 1167 } 1168 1169 /* ACPI 1.0b: 6.4.3.5.5 Word Address Space Descriptor: bytes 3-5 */ 1170 static Aml *aml_as_desc_header(AmlResourceType type, AmlMinFixed min_fixed, 1171 AmlMaxFixed max_fixed, AmlDecode dec, 1172 uint8_t type_flags) 1173 { 1174 uint8_t flags = max_fixed | min_fixed | dec; 1175 Aml *var = aml_alloc(); 1176 1177 build_append_byte(var->buf, type); 1178 build_append_byte(var->buf, flags); 1179 build_append_byte(var->buf, type_flags); /* Type Specific Flags */ 1180 return var; 1181 } 1182 1183 /* ACPI 1.0b: 6.4.3.5.5 Word Address Space Descriptor */ 1184 static Aml *aml_word_as_desc(AmlResourceType type, AmlMinFixed min_fixed, 1185 AmlMaxFixed max_fixed, AmlDecode dec, 1186 uint16_t addr_gran, uint16_t addr_min, 1187 uint16_t addr_max, uint16_t addr_trans, 1188 uint16_t len, uint8_t type_flags) 1189 { 1190 Aml *var = aml_alloc(); 1191 1192 build_append_byte(var->buf, 0x88); /* Word Address Space Descriptor */ 1193 /* minimum length since we do not encode optional fields */ 1194 build_append_byte(var->buf, 0x0D); 1195 build_append_byte(var->buf, 0x0); 1196 1197 aml_append(var, 1198 aml_as_desc_header(type, min_fixed, max_fixed, dec, type_flags)); 1199 build_append_int_noprefix(var->buf, addr_gran, sizeof(addr_gran)); 1200 build_append_int_noprefix(var->buf, addr_min, sizeof(addr_min)); 1201 build_append_int_noprefix(var->buf, addr_max, sizeof(addr_max)); 1202 build_append_int_noprefix(var->buf, addr_trans, sizeof(addr_trans)); 1203 build_append_int_noprefix(var->buf, len, sizeof(len)); 1204 return var; 1205 } 1206 1207 /* ACPI 1.0b: 6.4.3.5.3 DWord Address Space Descriptor */ 1208 static Aml *aml_dword_as_desc(AmlResourceType type, AmlMinFixed min_fixed, 1209 AmlMaxFixed max_fixed, AmlDecode dec, 1210 uint32_t addr_gran, uint32_t addr_min, 1211 uint32_t addr_max, uint32_t addr_trans, 1212 uint32_t len, uint8_t type_flags) 1213 { 1214 Aml *var = aml_alloc(); 1215 1216 build_append_byte(var->buf, 0x87); /* DWord Address Space Descriptor */ 1217 /* minimum length since we do not encode optional fields */ 1218 build_append_byte(var->buf, 23); 1219 build_append_byte(var->buf, 0x0); 1220 1221 1222 aml_append(var, 1223 aml_as_desc_header(type, min_fixed, max_fixed, dec, type_flags)); 1224 build_append_int_noprefix(var->buf, addr_gran, sizeof(addr_gran)); 1225 build_append_int_noprefix(var->buf, addr_min, sizeof(addr_min)); 1226 build_append_int_noprefix(var->buf, addr_max, sizeof(addr_max)); 1227 build_append_int_noprefix(var->buf, addr_trans, sizeof(addr_trans)); 1228 build_append_int_noprefix(var->buf, len, sizeof(len)); 1229 return var; 1230 } 1231 1232 /* ACPI 1.0b: 6.4.3.5.1 QWord Address Space Descriptor */ 1233 static Aml *aml_qword_as_desc(AmlResourceType type, AmlMinFixed min_fixed, 1234 AmlMaxFixed max_fixed, AmlDecode dec, 1235 uint64_t addr_gran, uint64_t addr_min, 1236 uint64_t addr_max, uint64_t addr_trans, 1237 uint64_t len, uint8_t type_flags) 1238 { 1239 Aml *var = aml_alloc(); 1240 1241 build_append_byte(var->buf, 0x8A); /* QWord Address Space Descriptor */ 1242 /* minimum length since we do not encode optional fields */ 1243 build_append_byte(var->buf, 0x2B); 1244 build_append_byte(var->buf, 0x0); 1245 1246 aml_append(var, 1247 aml_as_desc_header(type, min_fixed, max_fixed, dec, type_flags)); 1248 build_append_int_noprefix(var->buf, addr_gran, sizeof(addr_gran)); 1249 build_append_int_noprefix(var->buf, addr_min, sizeof(addr_min)); 1250 build_append_int_noprefix(var->buf, addr_max, sizeof(addr_max)); 1251 build_append_int_noprefix(var->buf, addr_trans, sizeof(addr_trans)); 1252 build_append_int_noprefix(var->buf, len, sizeof(len)); 1253 return var; 1254 } 1255 1256 /* 1257 * ACPI 1.0b: 6.4.3.5.6 ASL Macros for WORD Address Descriptor 1258 * 1259 * More verbose description at: 1260 * ACPI 5.0: 19.5.141 WordBusNumber (Word Bus Number Resource Descriptor Macro) 1261 */ 1262 Aml *aml_word_bus_number(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, 1263 AmlDecode dec, uint16_t addr_gran, 1264 uint16_t addr_min, uint16_t addr_max, 1265 uint16_t addr_trans, uint16_t len) 1266 1267 { 1268 return aml_word_as_desc(AML_BUS_NUMBER_RANGE, min_fixed, max_fixed, dec, 1269 addr_gran, addr_min, addr_max, addr_trans, len, 0); 1270 } 1271 1272 /* 1273 * ACPI 1.0b: 6.4.3.5.6 ASL Macros for WORD Address Descriptor 1274 * 1275 * More verbose description at: 1276 * ACPI 5.0: 19.5.142 WordIO (Word IO Resource Descriptor Macro) 1277 */ 1278 Aml *aml_word_io(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, 1279 AmlDecode dec, AmlISARanges isa_ranges, 1280 uint16_t addr_gran, uint16_t addr_min, 1281 uint16_t addr_max, uint16_t addr_trans, 1282 uint16_t len) 1283 1284 { 1285 return aml_word_as_desc(AML_IO_RANGE, min_fixed, max_fixed, dec, 1286 addr_gran, addr_min, addr_max, addr_trans, len, 1287 isa_ranges); 1288 } 1289 1290 /* 1291 * ACPI 1.0b: 6.4.3.5.4 ASL Macros for DWORD Address Descriptor 1292 * 1293 * More verbose description at: 1294 * ACPI 5.0: 19.5.33 DWordIO (DWord IO Resource Descriptor Macro) 1295 */ 1296 Aml *aml_dword_io(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, 1297 AmlDecode dec, AmlISARanges isa_ranges, 1298 uint32_t addr_gran, uint32_t addr_min, 1299 uint32_t addr_max, uint32_t addr_trans, 1300 uint32_t len) 1301 1302 { 1303 return aml_dword_as_desc(AML_IO_RANGE, min_fixed, max_fixed, dec, 1304 addr_gran, addr_min, addr_max, addr_trans, len, 1305 isa_ranges); 1306 } 1307 1308 /* 1309 * ACPI 1.0b: 6.4.3.5.4 ASL Macros for DWORD Address Space Descriptor 1310 * 1311 * More verbose description at: 1312 * ACPI 5.0: 19.5.34 DWordMemory (DWord Memory Resource Descriptor Macro) 1313 */ 1314 Aml *aml_dword_memory(AmlDecode dec, AmlMinFixed min_fixed, 1315 AmlMaxFixed max_fixed, AmlCacheable cacheable, 1316 AmlReadAndWrite read_and_write, 1317 uint32_t addr_gran, uint32_t addr_min, 1318 uint32_t addr_max, uint32_t addr_trans, 1319 uint32_t len) 1320 { 1321 uint8_t flags = read_and_write | (cacheable << 1); 1322 1323 return aml_dword_as_desc(AML_MEMORY_RANGE, min_fixed, max_fixed, 1324 dec, addr_gran, addr_min, addr_max, 1325 addr_trans, len, flags); 1326 } 1327 1328 /* 1329 * ACPI 1.0b: 6.4.3.5.2 ASL Macros for QWORD Address Space Descriptor 1330 * 1331 * More verbose description at: 1332 * ACPI 5.0: 19.5.102 QWordMemory (QWord Memory Resource Descriptor Macro) 1333 */ 1334 Aml *aml_qword_memory(AmlDecode dec, AmlMinFixed min_fixed, 1335 AmlMaxFixed max_fixed, AmlCacheable cacheable, 1336 AmlReadAndWrite read_and_write, 1337 uint64_t addr_gran, uint64_t addr_min, 1338 uint64_t addr_max, uint64_t addr_trans, 1339 uint64_t len) 1340 { 1341 uint8_t flags = read_and_write | (cacheable << 1); 1342 1343 return aml_qword_as_desc(AML_MEMORY_RANGE, min_fixed, max_fixed, 1344 dec, addr_gran, addr_min, addr_max, 1345 addr_trans, len, flags); 1346 } 1347 1348 /* ACPI 1.0b: 6.4.2.2 DMA Format/6.4.2.2.1 ASL Macro for DMA Descriptor */ 1349 Aml *aml_dma(AmlDmaType typ, AmlDmaBusMaster bm, AmlTransferSize sz, 1350 uint8_t channel) 1351 { 1352 Aml *var = aml_alloc(); 1353 uint8_t flags = sz | bm << 2 | typ << 5; 1354 1355 assert(channel < 8); 1356 build_append_byte(var->buf, 0x2A); /* Byte 0: DMA Descriptor */ 1357 build_append_byte(var->buf, 1U << channel); /* Byte 1: _DMA - DmaChannel */ 1358 build_append_byte(var->buf, flags); /* Byte 2 */ 1359 return var; 1360 } 1361 1362 /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefSleep */ 1363 Aml *aml_sleep(uint64_t msec) 1364 { 1365 Aml *var = aml_alloc(); 1366 build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ 1367 build_append_byte(var->buf, 0x22); /* SleepOp */ 1368 aml_append(var, aml_int(msec)); 1369 return var; 1370 } 1371 1372 static uint8_t Hex2Byte(const char *src) 1373 { 1374 int hi, lo; 1375 1376 hi = Hex2Digit(src[0]); 1377 assert(hi >= 0); 1378 assert(hi <= 15); 1379 1380 lo = Hex2Digit(src[1]); 1381 assert(lo >= 0); 1382 assert(lo <= 15); 1383 return (hi << 4) | lo; 1384 } 1385 1386 /* 1387 * ACPI 3.0: 17.5.124 ToUUID (Convert String to UUID Macro) 1388 * e.g. UUID: aabbccdd-eeff-gghh-iijj-kkllmmnnoopp 1389 * call aml_touuid("aabbccdd-eeff-gghh-iijj-kkllmmnnoopp"); 1390 */ 1391 Aml *aml_touuid(const char *uuid) 1392 { 1393 Aml *var = aml_bundle(0x11 /* BufferOp */, AML_BUFFER); 1394 1395 assert(strlen(uuid) == 36); 1396 assert(uuid[8] == '-'); 1397 assert(uuid[13] == '-'); 1398 assert(uuid[18] == '-'); 1399 assert(uuid[23] == '-'); 1400 1401 build_append_byte(var->buf, Hex2Byte(uuid + 6)); /* dd - at offset 00 */ 1402 build_append_byte(var->buf, Hex2Byte(uuid + 4)); /* cc - at offset 01 */ 1403 build_append_byte(var->buf, Hex2Byte(uuid + 2)); /* bb - at offset 02 */ 1404 build_append_byte(var->buf, Hex2Byte(uuid + 0)); /* aa - at offset 03 */ 1405 1406 build_append_byte(var->buf, Hex2Byte(uuid + 11)); /* ff - at offset 04 */ 1407 build_append_byte(var->buf, Hex2Byte(uuid + 9)); /* ee - at offset 05 */ 1408 1409 build_append_byte(var->buf, Hex2Byte(uuid + 16)); /* hh - at offset 06 */ 1410 build_append_byte(var->buf, Hex2Byte(uuid + 14)); /* gg - at offset 07 */ 1411 1412 build_append_byte(var->buf, Hex2Byte(uuid + 19)); /* ii - at offset 08 */ 1413 build_append_byte(var->buf, Hex2Byte(uuid + 21)); /* jj - at offset 09 */ 1414 1415 build_append_byte(var->buf, Hex2Byte(uuid + 24)); /* kk - at offset 10 */ 1416 build_append_byte(var->buf, Hex2Byte(uuid + 26)); /* ll - at offset 11 */ 1417 build_append_byte(var->buf, Hex2Byte(uuid + 28)); /* mm - at offset 12 */ 1418 build_append_byte(var->buf, Hex2Byte(uuid + 30)); /* nn - at offset 13 */ 1419 build_append_byte(var->buf, Hex2Byte(uuid + 32)); /* oo - at offset 14 */ 1420 build_append_byte(var->buf, Hex2Byte(uuid + 34)); /* pp - at offset 15 */ 1421 1422 return var; 1423 } 1424 1425 /* 1426 * ACPI 2.0b: 16.2.3.6.4.3 Unicode Macro (Convert Ascii String To Unicode) 1427 */ 1428 Aml *aml_unicode(const char *str) 1429 { 1430 int i = 0; 1431 Aml *var = aml_bundle(0x11 /* BufferOp */, AML_BUFFER); 1432 1433 do { 1434 build_append_byte(var->buf, str[i]); 1435 build_append_byte(var->buf, 0); 1436 i++; 1437 } while (i <= strlen(str)); 1438 1439 return var; 1440 } 1441 1442 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefRefOf */ 1443 Aml *aml_refof(Aml *arg) 1444 { 1445 Aml *var = aml_opcode(0x71 /* RefOfOp */); 1446 aml_append(var, arg); 1447 return var; 1448 } 1449 1450 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefDerefOf */ 1451 Aml *aml_derefof(Aml *arg) 1452 { 1453 Aml *var = aml_opcode(0x83 /* DerefOfOp */); 1454 aml_append(var, arg); 1455 return var; 1456 } 1457 1458 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefSizeOf */ 1459 Aml *aml_sizeof(Aml *arg) 1460 { 1461 Aml *var = aml_opcode(0x87 /* SizeOfOp */); 1462 aml_append(var, arg); 1463 return var; 1464 } 1465 1466 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefMutex */ 1467 Aml *aml_mutex(const char *name, uint8_t sync_level) 1468 { 1469 Aml *var = aml_alloc(); 1470 build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ 1471 build_append_byte(var->buf, 0x01); /* MutexOp */ 1472 build_append_namestring(var->buf, "%s", name); 1473 assert(!(sync_level & 0xF0)); 1474 build_append_byte(var->buf, sync_level); 1475 return var; 1476 } 1477 1478 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefAcquire */ 1479 Aml *aml_acquire(Aml *mutex, uint16_t timeout) 1480 { 1481 Aml *var = aml_alloc(); 1482 build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ 1483 build_append_byte(var->buf, 0x23); /* AcquireOp */ 1484 aml_append(var, mutex); 1485 build_append_int_noprefix(var->buf, timeout, sizeof(timeout)); 1486 return var; 1487 } 1488 1489 /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefRelease */ 1490 Aml *aml_release(Aml *mutex) 1491 { 1492 Aml *var = aml_alloc(); 1493 build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ 1494 build_append_byte(var->buf, 0x27); /* ReleaseOp */ 1495 aml_append(var, mutex); 1496 return var; 1497 } 1498 1499 /* ACPI 1.0b: 16.2.5.1 Name Space Modifier Objects Encoding: DefAlias */ 1500 Aml *aml_alias(const char *source_object, const char *alias_object) 1501 { 1502 Aml *var = aml_opcode(0x06 /* AliasOp */); 1503 aml_append(var, aml_name("%s", source_object)); 1504 aml_append(var, aml_name("%s", alias_object)); 1505 return var; 1506 } 1507 1508 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefConcat */ 1509 Aml *aml_concatenate(Aml *source1, Aml *source2, Aml *target) 1510 { 1511 return build_opcode_2arg_dst(0x73 /* ConcatOp */, source1, source2, 1512 target); 1513 } 1514 1515 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefObjectType */ 1516 Aml *aml_object_type(Aml *object) 1517 { 1518 Aml *var = aml_opcode(0x8E /* ObjectTypeOp */); 1519 aml_append(var, object); 1520 return var; 1521 } 1522 1523 void 1524 build_header(BIOSLinker *linker, GArray *table_data, 1525 AcpiTableHeader *h, const char *sig, int len, uint8_t rev, 1526 const char *oem_id, const char *oem_table_id) 1527 { 1528 unsigned tbl_offset = (char *)h - table_data->data; 1529 unsigned checksum_offset = (char *)&h->checksum - table_data->data; 1530 memcpy(&h->signature, sig, 4); 1531 h->length = cpu_to_le32(len); 1532 h->revision = rev; 1533 1534 if (oem_id) { 1535 strncpy((char *)h->oem_id, oem_id, sizeof h->oem_id); 1536 } else { 1537 memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6); 1538 } 1539 1540 if (oem_table_id) { 1541 strncpy((char *)h->oem_table_id, oem_table_id, sizeof(h->oem_table_id)); 1542 } else { 1543 memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4); 1544 memcpy(h->oem_table_id + 4, sig, 4); 1545 } 1546 1547 h->oem_revision = cpu_to_le32(1); 1548 memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4); 1549 h->asl_compiler_revision = cpu_to_le32(1); 1550 /* Checksum to be filled in by Guest linker */ 1551 bios_linker_loader_add_checksum(linker, ACPI_BUILD_TABLE_FILE, 1552 tbl_offset, len, checksum_offset); 1553 } 1554 1555 void *acpi_data_push(GArray *table_data, unsigned size) 1556 { 1557 unsigned off = table_data->len; 1558 g_array_set_size(table_data, off + size); 1559 return table_data->data + off; 1560 } 1561 1562 unsigned acpi_data_len(GArray *table) 1563 { 1564 assert(g_array_get_element_size(table) == 1); 1565 return table->len; 1566 } 1567 1568 void acpi_add_table(GArray *table_offsets, GArray *table_data) 1569 { 1570 uint32_t offset = table_data->len; 1571 g_array_append_val(table_offsets, offset); 1572 } 1573 1574 void acpi_build_tables_init(AcpiBuildTables *tables) 1575 { 1576 tables->rsdp = g_array_new(false, true /* clear */, 1); 1577 tables->table_data = g_array_new(false, true /* clear */, 1); 1578 tables->tcpalog = g_array_new(false, true /* clear */, 1); 1579 tables->vmgenid = g_array_new(false, true /* clear */, 1); 1580 tables->linker = bios_linker_loader_init(); 1581 } 1582 1583 void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre) 1584 { 1585 bios_linker_loader_cleanup(tables->linker); 1586 g_array_free(tables->rsdp, true); 1587 g_array_free(tables->table_data, true); 1588 g_array_free(tables->tcpalog, mfre); 1589 g_array_free(tables->vmgenid, mfre); 1590 } 1591 1592 /* Build rsdt table */ 1593 void 1594 build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, 1595 const char *oem_id, const char *oem_table_id) 1596 { 1597 int i; 1598 unsigned rsdt_entries_offset; 1599 AcpiRsdtDescriptorRev1 *rsdt; 1600 const unsigned table_data_len = (sizeof(uint32_t) * table_offsets->len); 1601 const unsigned rsdt_entry_size = sizeof(rsdt->table_offset_entry[0]); 1602 const size_t rsdt_len = sizeof(*rsdt) + table_data_len; 1603 1604 rsdt = acpi_data_push(table_data, rsdt_len); 1605 rsdt_entries_offset = (char *)rsdt->table_offset_entry - table_data->data; 1606 for (i = 0; i < table_offsets->len; ++i) { 1607 uint32_t ref_tbl_offset = g_array_index(table_offsets, uint32_t, i); 1608 uint32_t rsdt_entry_offset = rsdt_entries_offset + rsdt_entry_size * i; 1609 1610 /* rsdt->table_offset_entry to be filled by Guest linker */ 1611 bios_linker_loader_add_pointer(linker, 1612 ACPI_BUILD_TABLE_FILE, rsdt_entry_offset, rsdt_entry_size, 1613 ACPI_BUILD_TABLE_FILE, ref_tbl_offset); 1614 } 1615 build_header(linker, table_data, 1616 (void *)rsdt, "RSDT", rsdt_len, 1, oem_id, oem_table_id); 1617 } 1618 1619 /* Build xsdt table */ 1620 void 1621 build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, 1622 const char *oem_id, const char *oem_table_id) 1623 { 1624 int i; 1625 unsigned xsdt_entries_offset; 1626 AcpiXsdtDescriptorRev2 *xsdt; 1627 const unsigned table_data_len = (sizeof(uint64_t) * table_offsets->len); 1628 const unsigned xsdt_entry_size = sizeof(xsdt->table_offset_entry[0]); 1629 const size_t xsdt_len = sizeof(*xsdt) + table_data_len; 1630 1631 xsdt = acpi_data_push(table_data, xsdt_len); 1632 xsdt_entries_offset = (char *)xsdt->table_offset_entry - table_data->data; 1633 for (i = 0; i < table_offsets->len; ++i) { 1634 uint64_t ref_tbl_offset = g_array_index(table_offsets, uint32_t, i); 1635 uint64_t xsdt_entry_offset = xsdt_entries_offset + xsdt_entry_size * i; 1636 1637 /* xsdt->table_offset_entry to be filled by Guest linker */ 1638 bios_linker_loader_add_pointer(linker, 1639 ACPI_BUILD_TABLE_FILE, xsdt_entry_offset, xsdt_entry_size, 1640 ACPI_BUILD_TABLE_FILE, ref_tbl_offset); 1641 } 1642 build_header(linker, table_data, 1643 (void *)xsdt, "XSDT", xsdt_len, 1, oem_id, oem_table_id); 1644 } 1645 1646 void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base, 1647 uint64_t len, int node, MemoryAffinityFlags flags) 1648 { 1649 numamem->type = ACPI_SRAT_MEMORY; 1650 numamem->length = sizeof(*numamem); 1651 numamem->proximity = cpu_to_le32(node); 1652 numamem->flags = cpu_to_le32(flags); 1653 numamem->base_addr = cpu_to_le64(base); 1654 numamem->range_length = cpu_to_le64(len); 1655 } 1656 1657 /* 1658 * ACPI spec 5.2.17 System Locality Distance Information Table 1659 * (Revision 2.0 or later) 1660 */ 1661 void build_slit(GArray *table_data, BIOSLinker *linker) 1662 { 1663 int slit_start, i, j; 1664 slit_start = table_data->len; 1665 1666 acpi_data_push(table_data, sizeof(AcpiTableHeader)); 1667 1668 build_append_int_noprefix(table_data, nb_numa_nodes, 8); 1669 for (i = 0; i < nb_numa_nodes; i++) { 1670 for (j = 0; j < nb_numa_nodes; j++) { 1671 assert(numa_info[i].distance[j]); 1672 build_append_int_noprefix(table_data, numa_info[i].distance[j], 1); 1673 } 1674 } 1675 1676 build_header(linker, table_data, 1677 (void *)(table_data->data + slit_start), 1678 "SLIT", 1679 table_data->len - slit_start, 1, NULL, NULL); 1680 } 1681 1682 /* build rev1/rev3/rev5.1 FADT */ 1683 void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f, 1684 const char *oem_id, const char *oem_table_id) 1685 { 1686 int off; 1687 int fadt_start = tbl->len; 1688 1689 acpi_data_push(tbl, sizeof(AcpiTableHeader)); 1690 1691 /* FACS address to be filled by Guest linker at runtime */ 1692 off = tbl->len; 1693 build_append_int_noprefix(tbl, 0, 4); /* FIRMWARE_CTRL */ 1694 if (f->facs_tbl_offset) { /* don't patch if not supported by platform */ 1695 bios_linker_loader_add_pointer(linker, 1696 ACPI_BUILD_TABLE_FILE, off, 4, 1697 ACPI_BUILD_TABLE_FILE, *f->facs_tbl_offset); 1698 } 1699 1700 /* DSDT address to be filled by Guest linker at runtime */ 1701 off = tbl->len; 1702 build_append_int_noprefix(tbl, 0, 4); /* DSDT */ 1703 if (f->dsdt_tbl_offset) { /* don't patch if not supported by platform */ 1704 bios_linker_loader_add_pointer(linker, 1705 ACPI_BUILD_TABLE_FILE, off, 4, 1706 ACPI_BUILD_TABLE_FILE, *f->dsdt_tbl_offset); 1707 } 1708 1709 /* ACPI1.0: INT_MODEL, ACPI2.0+: Reserved */ 1710 build_append_int_noprefix(tbl, f->int_model /* Multiple APIC */, 1); 1711 /* Preferred_PM_Profile */ 1712 build_append_int_noprefix(tbl, 0 /* Unspecified */, 1); 1713 build_append_int_noprefix(tbl, f->sci_int, 2); /* SCI_INT */ 1714 build_append_int_noprefix(tbl, f->smi_cmd, 4); /* SMI_CMD */ 1715 build_append_int_noprefix(tbl, f->acpi_enable_cmd, 1); /* ACPI_ENABLE */ 1716 build_append_int_noprefix(tbl, f->acpi_disable_cmd, 1); /* ACPI_DISABLE */ 1717 build_append_int_noprefix(tbl, 0 /* not supported */, 1); /* S4BIOS_REQ */ 1718 /* ACPI1.0: Reserved, ACPI2.0+: PSTATE_CNT */ 1719 build_append_int_noprefix(tbl, 0, 1); 1720 build_append_int_noprefix(tbl, f->pm1a_evt.address, 4); /* PM1a_EVT_BLK */ 1721 build_append_int_noprefix(tbl, 0, 4); /* PM1b_EVT_BLK */ 1722 build_append_int_noprefix(tbl, f->pm1a_cnt.address, 4); /* PM1a_CNT_BLK */ 1723 build_append_int_noprefix(tbl, 0, 4); /* PM1b_CNT_BLK */ 1724 build_append_int_noprefix(tbl, 0, 4); /* PM2_CNT_BLK */ 1725 build_append_int_noprefix(tbl, f->pm_tmr.address, 4); /* PM_TMR_BLK */ 1726 build_append_int_noprefix(tbl, f->gpe0_blk.address, 4); /* GPE0_BLK */ 1727 build_append_int_noprefix(tbl, 0, 4); /* GPE1_BLK */ 1728 /* PM1_EVT_LEN */ 1729 build_append_int_noprefix(tbl, f->pm1a_evt.bit_width / 8, 1); 1730 /* PM1_CNT_LEN */ 1731 build_append_int_noprefix(tbl, f->pm1a_cnt.bit_width / 8, 1); 1732 build_append_int_noprefix(tbl, 0, 1); /* PM2_CNT_LEN */ 1733 build_append_int_noprefix(tbl, f->pm_tmr.bit_width / 8, 1); /* PM_TMR_LEN */ 1734 /* GPE0_BLK_LEN */ 1735 build_append_int_noprefix(tbl, f->gpe0_blk.bit_width / 8, 1); 1736 build_append_int_noprefix(tbl, 0, 1); /* GPE1_BLK_LEN */ 1737 build_append_int_noprefix(tbl, 0, 1); /* GPE1_BASE */ 1738 build_append_int_noprefix(tbl, 0, 1); /* CST_CNT */ 1739 build_append_int_noprefix(tbl, f->plvl2_lat, 2); /* P_LVL2_LAT */ 1740 build_append_int_noprefix(tbl, f->plvl3_lat, 2); /* P_LVL3_LAT */ 1741 build_append_int_noprefix(tbl, 0, 2); /* FLUSH_SIZE */ 1742 build_append_int_noprefix(tbl, 0, 2); /* FLUSH_STRIDE */ 1743 build_append_int_noprefix(tbl, 0, 1); /* DUTY_OFFSET */ 1744 build_append_int_noprefix(tbl, 0, 1); /* DUTY_WIDTH */ 1745 build_append_int_noprefix(tbl, 0, 1); /* DAY_ALRM */ 1746 build_append_int_noprefix(tbl, 0, 1); /* MON_ALRM */ 1747 build_append_int_noprefix(tbl, f->rtc_century, 1); /* CENTURY */ 1748 build_append_int_noprefix(tbl, 0, 2); /* IAPC_BOOT_ARCH */ 1749 build_append_int_noprefix(tbl, 0, 1); /* Reserved */ 1750 build_append_int_noprefix(tbl, f->flags, 4); /* Flags */ 1751 1752 if (f->rev == 1) { 1753 goto build_hdr; 1754 } 1755 1756 build_append_gas_from_struct(tbl, &f->reset_reg); /* RESET_REG */ 1757 build_append_int_noprefix(tbl, f->reset_val, 1); /* RESET_VALUE */ 1758 /* Since ACPI 5.1 */ 1759 if ((f->rev >= 6) || ((f->rev == 5) && f->minor_ver > 0)) { 1760 build_append_int_noprefix(tbl, f->arm_boot_arch, 2); /* ARM_BOOT_ARCH */ 1761 /* FADT Minor Version */ 1762 build_append_int_noprefix(tbl, f->minor_ver, 1); 1763 } else { 1764 build_append_int_noprefix(tbl, 0, 3); /* Reserved upto ACPI 5.0 */ 1765 } 1766 build_append_int_noprefix(tbl, 0, 8); /* X_FIRMWARE_CTRL */ 1767 1768 /* XDSDT address to be filled by Guest linker at runtime */ 1769 off = tbl->len; 1770 build_append_int_noprefix(tbl, 0, 8); /* X_DSDT */ 1771 if (f->xdsdt_tbl_offset) { 1772 bios_linker_loader_add_pointer(linker, 1773 ACPI_BUILD_TABLE_FILE, off, 8, 1774 ACPI_BUILD_TABLE_FILE, *f->xdsdt_tbl_offset); 1775 } 1776 1777 build_append_gas_from_struct(tbl, &f->pm1a_evt); /* X_PM1a_EVT_BLK */ 1778 /* X_PM1b_EVT_BLK */ 1779 build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0); 1780 build_append_gas_from_struct(tbl, &f->pm1a_cnt); /* X_PM1a_CNT_BLK */ 1781 /* X_PM1b_CNT_BLK */ 1782 build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0); 1783 /* X_PM2_CNT_BLK */ 1784 build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0); 1785 build_append_gas_from_struct(tbl, &f->pm_tmr); /* X_PM_TMR_BLK */ 1786 build_append_gas_from_struct(tbl, &f->gpe0_blk); /* X_GPE0_BLK */ 1787 build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0); /* X_GPE1_BLK */ 1788 1789 if (f->rev <= 4) { 1790 goto build_hdr; 1791 } 1792 1793 /* SLEEP_CONTROL_REG */ 1794 build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0); 1795 /* SLEEP_STATUS_REG */ 1796 build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0); 1797 1798 /* TODO: extra fields need to be added to support revisions above rev5 */ 1799 assert(f->rev == 5); 1800 1801 build_hdr: 1802 build_header(linker, tbl, (void *)(tbl->data + fadt_start), 1803 "FACP", tbl->len - fadt_start, f->rev, oem_id, oem_table_id); 1804 } 1805