tests/bios-tables-test.c

   1 /*
   2  * Boot order test cases.
   3  *
   4  * Copyright (c) 2013 Red Hat Inc.
   5  *
   6  * Authors:
   7  *  Michael S. Tsirkin <mst@redhat.com>,
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #include <string.h>
  14 #include <stdio.h>
  15 #include <glib.h>
  16 #include <glib/gstdio.h>
  17 #include "qemu-common.h"
  18 #include "libqtest.h"
  19 #include "qemu/compiler.h"
  20 #include "hw/i386/acpi-defs.h"
  21 #include "hw/i386/smbios.h"
  22 #include "qemu/bitmap.h"
  23
  24 #define MACHINE_PC "pc"
  25 #define MACHINE_Q35 "q35"
  26
  27 #define ACPI_REBUILD_EXPECTED_AML "TEST_ACPI_REBUILD_AML"
  28
  29 /* DSDT and SSDTs format */
  30 typedef struct {
  31     AcpiTableHeader header;
  32     gchar *aml;            /* aml bytecode from guest */
  33     gsize aml_len;
  34     gchar *aml_file;
  35     gchar *asl;            /* asl code generated from aml */
  36     gsize asl_len;
  37     gchar *asl_file;
  38     bool tmp_files_retain;   /* do not delete the temp asl/aml */
  39 } QEMU_PACKED AcpiSdtTable;
  40
  41 typedef struct {
  42     const char *machine;
  43     uint32_t rsdp_addr;
  44     AcpiRsdpDescriptor rsdp_table;
  45     AcpiRsdtDescriptorRev1 rsdt_table;
  46     AcpiFadtDescriptorRev1 fadt_table;
  47     AcpiFacsDescriptorRev1 facs_table;
  48     uint32_t *rsdt_tables_addr;
  49     int rsdt_tables_nr;
  50     GArray *tables;
  51     uint32_t smbios_ep_addr;
  52     struct smbios_entry_point smbios_ep_table;
  53 } test_data;
  54
  55 #define LOW(x) ((x) & 0xff)
  56 #define HIGH(x) ((x) >> 8)
  57
  58 #define SIGNATURE 0xdead
  59 #define SIGNATURE_OFFSET 0x10
  60 #define BOOT_SECTOR_ADDRESS 0x7c00
  61
  62 #define ACPI_READ_FIELD(field, addr)           \
  63     do {                                       \
  64         switch (sizeof(field)) {               \
  65         case 1:                                \
  66             field = readb(addr);               \
  67             break;                             \
  68         case 2:                                \
  69             field = readw(addr);               \
  70             break;                             \
  71         case 4:                                \
  72             field = readl(addr);               \
  73             break;                             \
  74         case 8:                                \
  75             field = readq(addr);               \
  76             break;                             \
  77         default:                               \
  78             g_assert(false);                   \
  79         }                                      \
  80         addr += sizeof(field);                  \
  81     } while (0);
  82
  83 #define ACPI_READ_ARRAY_PTR(arr, length, addr)  \
  84     do {                                        \
  85         int idx;                                \
  86         for (idx = 0; idx < length; ++idx) {    \
  87             ACPI_READ_FIELD(arr[idx], addr);    \
  88         }                                       \
  89     } while (0);
  90
  91 #define ACPI_READ_ARRAY(arr, addr)                               \
  92     ACPI_READ_ARRAY_PTR(arr, sizeof(arr)/sizeof(arr[0]), addr)
  93
  94 #define ACPI_READ_TABLE_HEADER(table, addr)                      \
  95     do {                                                         \
  96         ACPI_READ_FIELD((table)->signature, addr);               \
  97         ACPI_READ_FIELD((table)->length, addr);                  \
  98         ACPI_READ_FIELD((table)->revision, addr);                \
  99         ACPI_READ_FIELD((table)->checksum, addr);                \
 100         ACPI_READ_ARRAY((table)->oem_id, addr);                  \
 101         ACPI_READ_ARRAY((table)->oem_table_id, addr);            \
 102         ACPI_READ_FIELD((table)->oem_revision, addr);            \
 103         ACPI_READ_ARRAY((table)->asl_compiler_id, addr);         \
 104         ACPI_READ_FIELD((table)->asl_compiler_revision, addr);   \
 105     } while (0);
 106
 107 #define ACPI_ASSERT_CMP(actual, expected) do { \
 108     uint32_t ACPI_ASSERT_CMP_le = cpu_to_le32(actual); \
 109     char ACPI_ASSERT_CMP_str[5] = {}; \
 110     memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 4); \
 111     g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
 112 } while (0)
 113
 114 #define ACPI_ASSERT_CMP64(actual, expected) do { \
 115     uint64_t ACPI_ASSERT_CMP_le = cpu_to_le64(actual); \
 116     char ACPI_ASSERT_CMP_str[9] = {}; \
 117     memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 8); \
 118     g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
 119 } while (0)
 120
 121 /* Boot sector code: write SIGNATURE into memory,
 122  * then halt.
 123  * Q35 machine requires a minimum 0x7e000 bytes disk.
 124  * (bug or feature?)
 125  */
 126 static uint8_t boot_sector[0x7e000] = {
 127     /* 7c00: mov $0xdead,%ax */
 128     [0x00] = 0xb8,
 129     [0x01] = LOW(SIGNATURE),
 130     [0x02] = HIGH(SIGNATURE),
 131     /* 7c03:  mov %ax,0x7c10 */
 132     [0x03] = 0xa3,
 133     [0x04] = LOW(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),
 134     [0x05] = HIGH(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),
 135     /* 7c06: cli */
 136     [0x06] = 0xfa,
 137     /* 7c07: hlt */
 138     [0x07] = 0xf4,
 139     /* 7c08: jmp 0x7c07=0x7c0a-3 */
 140     [0x08] = 0xeb,
 141     [0x09] = LOW(-3),
 142     /* We mov 0xdead here: set value to make debugging easier */
 143     [SIGNATURE_OFFSET] = LOW(0xface),
 144     [SIGNATURE_OFFSET + 1] = HIGH(0xface),
 145     /* End of boot sector marker */
 146     [0x1FE] = 0x55,
 147     [0x1FF] = 0xAA,
 148 };
 149
 150 static const char *disk = "tests/acpi-test-disk.raw";
 151 static const char *data_dir = "tests/acpi-test-data";
 152 #ifdef CONFIG_IASL
 153 static const char *iasl = stringify(CONFIG_IASL);
 154 #else
 155 static const char *iasl;
 156 #endif
 157
 158 static void free_test_data(test_data *data)
 159 {
 160     AcpiSdtTable *temp;
 161     int i;
 162
 163     if (data->rsdt_tables_addr) {
 164         g_free(data->rsdt_tables_addr);
 165     }
 166
 167     for (i = 0; i < data->tables->len; ++i) {
 168         temp = &g_array_index(data->tables, AcpiSdtTable, i);
 169         if (temp->aml) {
 170             g_free(temp->aml);
 171         }
 172         if (temp->aml_file) {
 173             if (!temp->tmp_files_retain &&
 174                 g_strstr_len(temp->aml_file, -1, "aml-")) {
 175                 unlink(temp->aml_file);
 176             }
 177             g_free(temp->aml_file);
 178         }
 179         if (temp->asl) {
 180             g_free(temp->asl);
 181         }
 182         if (temp->asl_file) {
 183             if (!temp->tmp_files_retain) {
 184                 unlink(temp->asl_file);
 185             }
 186             g_free(temp->asl_file);
 187         }
 188     }
 189
 190     g_array_free(data->tables, false);
 191 }
 192
 193 static uint8_t acpi_checksum(const uint8_t *data, int len)
 194 {
 195     int i;
 196     uint8_t sum = 0;
 197
 198     for (i = 0; i < len; i++) {
 199         sum += data[i];
 200     }
 201
 202     return sum;
 203 }
 204
 205 static void test_acpi_rsdp_address(test_data *data)
 206 {
 207     uint32_t off;
 208
 209     /* OK, now find RSDP */
 210     for (off = 0xf0000; off < 0x100000; off += 0x10) {
 211         uint8_t sig[] = "RSD PTR ";
 212         int i;
 213
 214         for (i = 0; i < sizeof sig - 1; ++i) {
 215             sig[i] = readb(off + i);
 216         }
 217
 218         if (!memcmp(sig, "RSD PTR ", sizeof sig)) {
 219             break;
 220         }
 221     }
 222
 223     g_assert_cmphex(off, <, 0x100000);
 224     data->rsdp_addr = off;
 225 }
 226
 227 static void test_acpi_rsdp_table(test_data *data)
 228 {
 229     AcpiRsdpDescriptor *rsdp_table = &data->rsdp_table;
 230     uint32_t addr = data->rsdp_addr;
 231
 232     ACPI_READ_FIELD(rsdp_table->signature, addr);
 233     ACPI_ASSERT_CMP64(rsdp_table->signature, "RSD PTR ");
 234
 235     ACPI_READ_FIELD(rsdp_table->checksum, addr);
 236     ACPI_READ_ARRAY(rsdp_table->oem_id, addr);
 237     ACPI_READ_FIELD(rsdp_table->revision, addr);
 238     ACPI_READ_FIELD(rsdp_table->rsdt_physical_address, addr);
 239     ACPI_READ_FIELD(rsdp_table->length, addr);
 240
 241     /* rsdp checksum is not for the whole table, but for the first 20 bytes */
 242     g_assert(!acpi_checksum((uint8_t *)rsdp_table, 20));
 243 }
 244
 245 static void test_acpi_rsdt_table(test_data *data)
 246 {
 247     AcpiRsdtDescriptorRev1 *rsdt_table = &data->rsdt_table;
 248     uint32_t addr = data->rsdp_table.rsdt_physical_address;
 249     uint32_t *tables;
 250     int tables_nr;
 251     uint8_t checksum;
 252
 253     /* read the header */
 254     ACPI_READ_TABLE_HEADER(rsdt_table, addr);
 255     ACPI_ASSERT_CMP(rsdt_table->signature, "RSDT");
 256
 257     /* compute the table entries in rsdt */
 258     tables_nr = (rsdt_table->length - sizeof(AcpiRsdtDescriptorRev1)) /
 259                 sizeof(uint32_t);
 260     g_assert_cmpint(tables_nr, >, 0);
 261
 262     /* get the addresses of the tables pointed by rsdt */
 263     tables = g_new0(uint32_t, tables_nr);
 264     ACPI_READ_ARRAY_PTR(tables, tables_nr, addr);
 265
 266     checksum = acpi_checksum((uint8_t *)rsdt_table, rsdt_table->length) +
 267                acpi_checksum((uint8_t *)tables, tables_nr * sizeof(uint32_t));
 268     g_assert(!checksum);
 269
 270    /* SSDT tables after FADT */
 271     data->rsdt_tables_addr = tables;
 272     data->rsdt_tables_nr = tables_nr;
 273 }
 274
 275 static void test_acpi_fadt_table(test_data *data)
 276 {
 277     AcpiFadtDescriptorRev1 *fadt_table = &data->fadt_table;
 278     uint32_t addr;
 279
 280     /* FADT table comes first */
 281     addr = data->rsdt_tables_addr[0];
 282     ACPI_READ_TABLE_HEADER(fadt_table, addr);
 283
 284     ACPI_READ_FIELD(fadt_table->firmware_ctrl, addr);
 285     ACPI_READ_FIELD(fadt_table->dsdt, addr);
 286     ACPI_READ_FIELD(fadt_table->model, addr);
 287     ACPI_READ_FIELD(fadt_table->reserved1, addr);
 288     ACPI_READ_FIELD(fadt_table->sci_int, addr);
 289     ACPI_READ_FIELD(fadt_table->smi_cmd, addr);
 290     ACPI_READ_FIELD(fadt_table->acpi_enable, addr);
 291     ACPI_READ_FIELD(fadt_table->acpi_disable, addr);
 292     ACPI_READ_FIELD(fadt_table->S4bios_req, addr);
 293     ACPI_READ_FIELD(fadt_table->reserved2, addr);
 294     ACPI_READ_FIELD(fadt_table->pm1a_evt_blk, addr);
 295     ACPI_READ_FIELD(fadt_table->pm1b_evt_blk, addr);
 296     ACPI_READ_FIELD(fadt_table->pm1a_cnt_blk, addr);
 297     ACPI_READ_FIELD(fadt_table->pm1b_cnt_blk, addr);
 298     ACPI_READ_FIELD(fadt_table->pm2_cnt_blk, addr);
 299     ACPI_READ_FIELD(fadt_table->pm_tmr_blk, addr);
 300     ACPI_READ_FIELD(fadt_table->gpe0_blk, addr);
 301     ACPI_READ_FIELD(fadt_table->gpe1_blk, addr);
 302     ACPI_READ_FIELD(fadt_table->pm1_evt_len, addr);
 303     ACPI_READ_FIELD(fadt_table->pm1_cnt_len, addr);
 304     ACPI_READ_FIELD(fadt_table->pm2_cnt_len, addr);
 305     ACPI_READ_FIELD(fadt_table->pm_tmr_len, addr);
 306     ACPI_READ_FIELD(fadt_table->gpe0_blk_len, addr);
 307     ACPI_READ_FIELD(fadt_table->gpe1_blk_len, addr);
 308     ACPI_READ_FIELD(fadt_table->gpe1_base, addr);
 309     ACPI_READ_FIELD(fadt_table->reserved3, addr);
 310     ACPI_READ_FIELD(fadt_table->plvl2_lat, addr);
 311     ACPI_READ_FIELD(fadt_table->plvl3_lat, addr);
 312     ACPI_READ_FIELD(fadt_table->flush_size, addr);
 313     ACPI_READ_FIELD(fadt_table->flush_stride, addr);
 314     ACPI_READ_FIELD(fadt_table->duty_offset, addr);
 315     ACPI_READ_FIELD(fadt_table->duty_width, addr);
 316     ACPI_READ_FIELD(fadt_table->day_alrm, addr);
 317     ACPI_READ_FIELD(fadt_table->mon_alrm, addr);
 318     ACPI_READ_FIELD(fadt_table->century, addr);
 319     ACPI_READ_FIELD(fadt_table->reserved4, addr);
 320     ACPI_READ_FIELD(fadt_table->reserved4a, addr);
 321     ACPI_READ_FIELD(fadt_table->reserved4b, addr);
 322     ACPI_READ_FIELD(fadt_table->flags, addr);
 323
 324     ACPI_ASSERT_CMP(fadt_table->signature, "FACP");
 325     g_assert(!acpi_checksum((uint8_t *)fadt_table, fadt_table->length));
 326 }
 327
 328 static void test_acpi_facs_table(test_data *data)
 329 {
 330     AcpiFacsDescriptorRev1 *facs_table = &data->facs_table;
 331     uint32_t addr = data->fadt_table.firmware_ctrl;
 332
 333     ACPI_READ_FIELD(facs_table->signature, addr);
 334     ACPI_READ_FIELD(facs_table->length, addr);
 335     ACPI_READ_FIELD(facs_table->hardware_signature, addr);
 336     ACPI_READ_FIELD(facs_table->firmware_waking_vector, addr);
 337     ACPI_READ_FIELD(facs_table->global_lock, addr);
 338     ACPI_READ_FIELD(facs_table->flags, addr);
 339     ACPI_READ_ARRAY(facs_table->resverved3, addr);
 340
 341     ACPI_ASSERT_CMP(facs_table->signature, "FACS");
 342 }
 343
 344 static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
 345 {
 346     uint8_t checksum;
 347
 348     ACPI_READ_TABLE_HEADER(&sdt_table->header, addr);
 349
 350     sdt_table->aml_len = sdt_table->header.length - sizeof(AcpiTableHeader);
 351     sdt_table->aml = g_malloc0(sdt_table->aml_len);
 352     ACPI_READ_ARRAY_PTR(sdt_table->aml, sdt_table->aml_len, addr);
 353
 354     checksum = acpi_checksum((uint8_t *)sdt_table, sizeof(AcpiTableHeader)) +
 355                acpi_checksum((uint8_t *)sdt_table->aml, sdt_table->aml_len);
 356     g_assert(!checksum);
 357 }
 358
 359 static void test_acpi_dsdt_table(test_data *data)
 360 {
 361     AcpiSdtTable dsdt_table;
 362     uint32_t addr = data->fadt_table.dsdt;
 363
 364     memset(&dsdt_table, 0, sizeof(dsdt_table));
 365     data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
 366
 367     test_dst_table(&dsdt_table, addr);
 368     ACPI_ASSERT_CMP(dsdt_table.header.signature, "DSDT");
 369
 370     /* Place DSDT first */
 371     g_array_append_val(data->tables, dsdt_table);
 372 }
 373
 374 static void test_acpi_tables(test_data *data)
 375 {
 376     int tables_nr = data->rsdt_tables_nr - 1; /* fadt is first */
 377     int i;
 378
 379     for (i = 0; i < tables_nr; i++) {
 380         AcpiSdtTable ssdt_table;
 381
 382         memset(&ssdt_table, 0 , sizeof(ssdt_table));
 383         uint32_t addr = data->rsdt_tables_addr[i + 1]; /* fadt is first */
 384         test_dst_table(&ssdt_table, addr);
 385         g_array_append_val(data->tables, ssdt_table);
 386     }
 387 }
 388
 389 static void dump_aml_files(test_data *data, bool rebuild)
 390 {
 391     AcpiSdtTable *sdt;
 392     GError *error = NULL;
 393     gchar *aml_file = NULL;
 394     gint fd;
 395     ssize_t ret;
 396     int i;
 397
 398     for (i = 0; i < data->tables->len; ++i) {
 399         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 400         g_assert(sdt->aml);
 401
 402         if (rebuild) {
 403             uint32_t signature = cpu_to_le32(sdt->header.signature);
 404             aml_file = g_strdup_printf("%s/%s/%.4s", data_dir, data->machine,
 405                                        (gchar *)&signature);
 406             fd = g_open(aml_file, O_WRONLY|O_TRUNC|O_CREAT,
 407                         S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH);
 408         } else {
 409             fd = g_file_open_tmp("aml-XXXXXX", &sdt->aml_file, &error);
 410             g_assert_no_error(error);
 411         }
 412         g_assert(fd >= 0);
 413
 414         ret = qemu_write_full(fd, sdt, sizeof(AcpiTableHeader));
 415         g_assert(ret == sizeof(AcpiTableHeader));
 416         ret = qemu_write_full(fd, sdt->aml, sdt->aml_len);
 417         g_assert(ret == sdt->aml_len);
 418
 419         close(fd);
 420
 421         if (aml_file) {
 422             g_free(aml_file);
 423         }
 424     }
 425 }
 426
 427 static bool compare_signature(AcpiSdtTable *sdt, const char *signature)
 428 {
 429    return !memcmp(&sdt->header.signature, signature, 4);
 430 }
 431
 432 static bool load_asl(GArray *sdts, AcpiSdtTable *sdt)
 433 {
 434     AcpiSdtTable *temp;
 435     GError *error = NULL;
 436     GString *command_line = g_string_new(iasl);
 437     gint fd;
 438     gchar *out, *out_err;
 439     gboolean ret;
 440     int i;
 441
 442     fd = g_file_open_tmp("asl-XXXXXX.dsl", &sdt->asl_file, &error);
 443     g_assert_no_error(error);
 444     close(fd);
 445
 446     /* build command line */
 447     g_string_append_printf(command_line, " -p %s ", sdt->asl_file);
 448     if (compare_signature(sdt, "DSDT") ||
 449         compare_signature(sdt, "SSDT")) {
 450         for (i = 0; i < sdts->len; ++i) {
 451             temp = &g_array_index(sdts, AcpiSdtTable, i);
 452             if (compare_signature(temp, "DSDT") ||
 453                 compare_signature(temp, "SSDT")) {
 454                 g_string_append_printf(command_line, "-e %s ", temp->aml_file);
 455             }
 456         }
 457     }
 458     g_string_append_printf(command_line, "-d %s", sdt->aml_file);
 459
 460     /* pass 'out' and 'out_err' in order to be redirected */
 461     ret = g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
 462     g_assert_no_error(error);
 463     if (ret) {
 464         ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
 465                                   &sdt->asl_len, &error);
 466         g_assert(ret);
 467         g_assert_no_error(error);
 468         ret = (sdt->asl_len > 0);
 469     }
 470
 471     g_free(out);
 472     g_free(out_err);
 473     g_string_free(command_line, true);
 474
 475     return !ret;
 476 }
 477
 478 #define COMMENT_END "*/"
 479 #define DEF_BLOCK "DefinitionBlock ("
 480 #define BLOCK_NAME_END ".aml"
 481
 482 static GString *normalize_asl(gchar *asl_code)
 483 {
 484     GString *asl = g_string_new(asl_code);
 485     gchar *comment, *block_name;
 486
 487     /* strip comments (different generation days) */
 488     comment = g_strstr_len(asl->str, asl->len, COMMENT_END);
 489     if (comment) {
 490         asl = g_string_erase(asl, 0, comment + sizeof(COMMENT_END) - asl->str);
 491     }
 492
 493     /* strip def block name (it has file path in it) */
 494     if (g_str_has_prefix(asl->str, DEF_BLOCK)) {
 495         block_name = g_strstr_len(asl->str, asl->len, BLOCK_NAME_END);
 496         g_assert(block_name);
 497         asl = g_string_erase(asl, 0,
 498                              block_name + sizeof(BLOCK_NAME_END) - asl->str);
 499     }
 500
 501     return asl;
 502 }
 503
 504 static GArray *load_expected_aml(test_data *data)
 505 {
 506     int i;
 507     AcpiSdtTable *sdt;
 508     gchar *aml_file;
 509     GError *error = NULL;
 510     gboolean ret;
 511
 512     GArray *exp_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
 513     for (i = 0; i < data->tables->len; ++i) {
 514         AcpiSdtTable exp_sdt;
 515         uint32_t signature;
 516
 517         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 518
 519         memset(&exp_sdt, 0, sizeof(exp_sdt));
 520         exp_sdt.header.signature = sdt->header.signature;
 521
 522         signature = cpu_to_le32(sdt->header.signature);
 523         aml_file = g_strdup_printf("%s/%s/%.4s", data_dir, data->machine,
 524                                    (gchar *)&signature);
 525         exp_sdt.aml_file = aml_file;
 526         g_assert(g_file_test(aml_file, G_FILE_TEST_EXISTS));
 527         ret = g_file_get_contents(aml_file, &exp_sdt.aml,
 528                                   &exp_sdt.aml_len, &error);
 529         g_assert(ret);
 530         g_assert_no_error(error);
 531         g_assert(exp_sdt.aml);
 532         g_assert(exp_sdt.aml_len);
 533
 534         g_array_append_val(exp_tables, exp_sdt);
 535     }
 536
 537     return exp_tables;
 538 }
 539
 540 static void test_acpi_asl(test_data *data)
 541 {
 542     int i;
 543     AcpiSdtTable *sdt, *exp_sdt;
 544     test_data exp_data;
 545     gboolean exp_err, err;
 546
 547     memset(&exp_data, 0, sizeof(exp_data));
 548     exp_data.tables = load_expected_aml(data);
 549     dump_aml_files(data, false);
 550     for (i = 0; i < data->tables->len; ++i) {
 551         GString *asl, *exp_asl;
 552
 553         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 554         exp_sdt = &g_array_index(exp_data.tables, AcpiSdtTable, i);
 555
 556         err = load_asl(data->tables, sdt);
 557         asl = normalize_asl(sdt->asl);
 558
 559         exp_err = load_asl(exp_data.tables, exp_sdt);
 560         exp_asl = normalize_asl(exp_sdt->asl);
 561
 562         /* TODO: check for warnings */
 563         g_assert(!err || exp_err);
 564
 565         if (g_strcmp0(asl->str, exp_asl->str)) {
 566             if (exp_err) {
 567                 fprintf(stderr,
 568                         "Warning! iasl couldn't parse the expected aml\n");
 569             } else {
 570                 uint32_t signature = cpu_to_le32(exp_sdt->header.signature);
 571                 sdt->tmp_files_retain = true;
 572                 exp_sdt->tmp_files_retain = true;
 573                 fprintf(stderr,
 574                         "acpi-test: Warning! %.4s mismatch. "
 575                         "Actual [asl:%s, aml:%s], Expected [asl:%s, aml:%s].\n",
 576                         (gchar *)&signature,
 577                         sdt->asl_file, sdt->aml_file,
 578                         exp_sdt->asl_file, exp_sdt->aml_file);
 579           }
 580         }
 581         g_string_free(asl, true);
 582         g_string_free(exp_asl, true);
 583     }
 584
 585     free_test_data(&exp_data);
 586 }
 587
 588 static void test_smbios_ep_address(test_data *data)
 589 {
 590     uint32_t off;
 591
 592     /* find smbios entry point structure */
 593     for (off = 0xf0000; off < 0x100000; off += 0x10) {
 594         uint8_t sig[] = "_SM_";
 595         int i;
 596
 597         for (i = 0; i < sizeof sig - 1; ++i) {
 598             sig[i] = readb(off + i);
 599         }
 600
 601         if (!memcmp(sig, "_SM_", sizeof sig)) {
 602             break;
 603         }
 604     }
 605
 606     g_assert_cmphex(off, <, 0x100000);
 607     data->smbios_ep_addr = off;
 608 }
 609
 610 static void test_smbios_ep_table(test_data *data)
 611 {
 612     struct smbios_entry_point *ep_table = &data->smbios_ep_table;
 613     uint32_t addr = data->smbios_ep_addr;
 614
 615     ACPI_READ_ARRAY(ep_table->anchor_string, addr);
 616     g_assert(!memcmp(ep_table->anchor_string, "_SM_", 4));
 617     ACPI_READ_FIELD(ep_table->checksum, addr);
 618     ACPI_READ_FIELD(ep_table->length, addr);
 619     ACPI_READ_FIELD(ep_table->smbios_major_version, addr);
 620     ACPI_READ_FIELD(ep_table->smbios_minor_version, addr);
 621     ACPI_READ_FIELD(ep_table->max_structure_size, addr);
 622     ACPI_READ_FIELD(ep_table->entry_point_revision, addr);
 623     ACPI_READ_ARRAY(ep_table->formatted_area, addr);
 624     ACPI_READ_ARRAY(ep_table->intermediate_anchor_string, addr);
 625     g_assert(!memcmp(ep_table->intermediate_anchor_string, "_DMI_", 5));
 626     ACPI_READ_FIELD(ep_table->intermediate_checksum, addr);
 627     ACPI_READ_FIELD(ep_table->structure_table_length, addr);
 628     g_assert_cmpuint(ep_table->structure_table_length, >, 0);
 629     ACPI_READ_FIELD(ep_table->structure_table_address, addr);
 630     ACPI_READ_FIELD(ep_table->number_of_structures, addr);
 631     g_assert_cmpuint(ep_table->number_of_structures, >, 0);
 632     ACPI_READ_FIELD(ep_table->smbios_bcd_revision, addr);
 633     g_assert(!acpi_checksum((uint8_t *)ep_table, sizeof *ep_table));
 634     g_assert(!acpi_checksum((uint8_t *)ep_table + 0x10,
 635                             sizeof *ep_table - 0x10));
 636 }
 637
 638 static inline bool smbios_single_instance(uint8_t type)
 639 {
 640     switch (type) {
 641     case 0:
 642     case 1:
 643     case 2:
 644     case 3:
 645     case 16:
 646     case 32:
 647     case 127:
 648         return true;
 649     default:
 650         return false;
 651     }
 652 }
 653
 654 static void test_smbios_structs(test_data *data)
 655 {
 656     DECLARE_BITMAP(struct_bitmap, SMBIOS_MAX_TYPE+1) = { 0 };
 657     struct smbios_entry_point *ep_table = &data->smbios_ep_table;
 658     uint32_t addr = ep_table->structure_table_address;
 659     int i, len, max_len = 0;
 660     uint8_t type, prv, crt;
 661     uint8_t required_struct_types[] = {0, 1, 3, 4, 16, 17, 19, 32, 127};
 662
 663     /* walk the smbios tables */
 664     for (i = 0; i < ep_table->number_of_structures; i++) {
 665
 666         /* grab type and formatted area length from struct header */
 667         type = readb(addr);
 668         g_assert_cmpuint(type, <=, SMBIOS_MAX_TYPE);
 669         len = readb(addr + 1);
 670
 671         /* single-instance structs must not have been encountered before */
 672         if (smbios_single_instance(type)) {
 673             g_assert(!test_bit(type, struct_bitmap));
 674         }
 675         set_bit(type, struct_bitmap);
 676
 677         /* seek to end of unformatted string area of this struct ("\0\0") */
 678         prv = crt = 1;
 679         while (prv || crt) {
 680             prv = crt;
 681             crt = readb(addr + len);
 682             len++;
 683         }
 684
 685         /* keep track of max. struct size */
 686         if (max_len < len) {
 687             max_len = len;
 688             g_assert_cmpuint(max_len, <=, ep_table->max_structure_size);
 689         }
 690
 691         /* start of next structure */
 692         addr += len;
 693     }
 694
 695     /* total table length and max struct size must match entry point values */
 696     g_assert_cmpuint(ep_table->structure_table_length, ==,
 697                      addr - ep_table->structure_table_address);
 698     g_assert_cmpuint(ep_table->max_structure_size, ==, max_len);
 699
 700     /* required struct types must all be present */
 701     for (i = 0; i < ARRAY_SIZE(required_struct_types); i++) {
 702         g_assert(test_bit(required_struct_types[i], struct_bitmap));
 703     }
 704 }
 705
 706 static void test_acpi_one(const char *params, test_data *data)
 707 {
 708     char *args;
 709     uint8_t signature_low;
 710     uint8_t signature_high;
 711     uint16_t signature;
 712     int i;
 713     const char *device = "";
 714
 715     if (!g_strcmp0(data->machine, MACHINE_Q35)) {
 716         device = ",id=hd -device ide-hd,drive=hd";
 717     }
 718
 719     args = g_strdup_printf("-net none -display none %s -drive file=%s%s,",
 720                            params ? params : "", disk, device);
 721     qtest_start(args);
 722
 723    /* Wait at most 1 minute */
 724 #define TEST_DELAY (1 * G_USEC_PER_SEC / 10)
 725 #define TEST_CYCLES MAX((60 * G_USEC_PER_SEC / TEST_DELAY), 1)
 726
 727     /* Poll until code has run and modified memory.  Once it has we know BIOS
 728      * initialization is done.  TODO: check that IP reached the halt
 729      * instruction.
 730      */
 731     for (i = 0; i < TEST_CYCLES; ++i) {
 732         signature_low = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET);
 733         signature_high = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET + 1);
 734         signature = (signature_high << 8) | signature_low;
 735         if (signature == SIGNATURE) {
 736             break;
 737         }
 738         g_usleep(TEST_DELAY);
 739     }
 740     g_assert_cmphex(signature, ==, SIGNATURE);
 741
 742     test_acpi_rsdp_address(data);
 743     test_acpi_rsdp_table(data);
 744     test_acpi_rsdt_table(data);
 745     test_acpi_fadt_table(data);
 746     test_acpi_facs_table(data);
 747     test_acpi_dsdt_table(data);
 748     test_acpi_tables(data);
 749
 750     if (iasl) {
 751         if (getenv(ACPI_REBUILD_EXPECTED_AML)) {
 752             dump_aml_files(data, true);
 753         } else {
 754             test_acpi_asl(data);
 755         }
 756     }
 757
 758     test_smbios_ep_address(data);
 759     test_smbios_ep_table(data);
 760     test_smbios_structs(data);
 761
 762     qtest_quit(global_qtest);
 763     g_free(args);
 764 }
 765
 766 static void test_acpi_tcg(void)
 767 {
 768     test_data data;
 769
 770     /* Supplying -machine accel argument overrides the default (qtest).
 771      * This is to make guest actually run.
 772      */
 773     memset(&data, 0, sizeof(data));
 774     data.machine = MACHINE_PC;
 775     test_acpi_one("-machine accel=tcg", &data);
 776     free_test_data(&data);
 777
 778     memset(&data, 0, sizeof(data));
 779     data.machine = MACHINE_Q35;
 780     test_acpi_one("-machine q35,accel=tcg", &data);
 781     free_test_data(&data);
 782 }
 783
 784 int main(int argc, char *argv[])
 785 {
 786     const char *arch = qtest_get_arch();
 787     FILE *f = fopen(disk, "w");
 788     int ret;
 789     fwrite(boot_sector, 1, sizeof boot_sector, f);
 790     fclose(f);
 791
 792     g_test_init(&argc, &argv, NULL);
 793
 794     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 795         qtest_add_func("acpi/tcg", test_acpi_tcg);
 796     }
 797     ret = g_test_run();
 798     unlink(disk);
 799     return ret;
 800 }