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/acpi/acpi-defs.h"
  21 #include "hw/smbios/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     const char *variant;
  44     uint32_t rsdp_addr;
  45     AcpiRsdpDescriptor rsdp_table;
  46     AcpiRsdtDescriptorRev1 rsdt_table;
  47     AcpiFadtDescriptorRev1 fadt_table;
  48     AcpiFacsDescriptorRev1 facs_table;
  49     uint32_t *rsdt_tables_addr;
  50     int rsdt_tables_nr;
  51     GArray *tables;
  52     uint32_t smbios_ep_addr;
  53     struct smbios_21_entry_point smbios_ep_table;
  54 } test_data;
  55
  56 #define LOW(x) ((x) & 0xff)
  57 #define HIGH(x) ((x) >> 8)
  58
  59 #define SIGNATURE 0xdead
  60 #define SIGNATURE_OFFSET 0x10
  61 #define BOOT_SECTOR_ADDRESS 0x7c00
  62
  63 #define ACPI_READ_FIELD(field, addr)           \
  64     do {                                       \
  65         switch (sizeof(field)) {               \
  66         case 1:                                \
  67             field = readb(addr);               \
  68             break;                             \
  69         case 2:                                \
  70             field = readw(addr);               \
  71             break;                             \
  72         case 4:                                \
  73             field = readl(addr);               \
  74             break;                             \
  75         case 8:                                \
  76             field = readq(addr);               \
  77             break;                             \
  78         default:                               \
  79             g_assert(false);                   \
  80         }                                      \
  81         addr += sizeof(field);                  \
  82     } while (0);
  83
  84 #define ACPI_READ_ARRAY_PTR(arr, length, addr)  \
  85     do {                                        \
  86         int idx;                                \
  87         for (idx = 0; idx < length; ++idx) {    \
  88             ACPI_READ_FIELD(arr[idx], addr);    \
  89         }                                       \
  90     } while (0);
  91
  92 #define ACPI_READ_ARRAY(arr, addr)                               \
  93     ACPI_READ_ARRAY_PTR(arr, sizeof(arr)/sizeof(arr[0]), addr)
  94
  95 #define ACPI_READ_TABLE_HEADER(table, addr)                      \
  96     do {                                                         \
  97         ACPI_READ_FIELD((table)->signature, addr);               \
  98         ACPI_READ_FIELD((table)->length, addr);                  \
  99         ACPI_READ_FIELD((table)->revision, addr);                \
 100         ACPI_READ_FIELD((table)->checksum, addr);                \
 101         ACPI_READ_ARRAY((table)->oem_id, addr);                  \
 102         ACPI_READ_ARRAY((table)->oem_table_id, addr);            \
 103         ACPI_READ_FIELD((table)->oem_revision, addr);            \
 104         ACPI_READ_ARRAY((table)->asl_compiler_id, addr);         \
 105         ACPI_READ_FIELD((table)->asl_compiler_revision, addr);   \
 106     } while (0);
 107
 108 #define ACPI_ASSERT_CMP(actual, expected) do { \
 109     uint32_t ACPI_ASSERT_CMP_le = cpu_to_le32(actual); \
 110     char ACPI_ASSERT_CMP_str[5] = {}; \
 111     memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 4); \
 112     g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
 113 } while (0)
 114
 115 #define ACPI_ASSERT_CMP64(actual, expected) do { \
 116     uint64_t ACPI_ASSERT_CMP_le = cpu_to_le64(actual); \
 117     char ACPI_ASSERT_CMP_str[9] = {}; \
 118     memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 8); \
 119     g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
 120 } while (0)
 121
 122 /* Boot sector code: write SIGNATURE into memory,
 123  * then halt.
 124  * Q35 machine requires a minimum 0x7e000 bytes disk.
 125  * (bug or feature?)
 126  */
 127 static uint8_t boot_sector[0x7e000] = {
 128     /* 7c00: mov $0xdead,%ax */
 129     [0x00] = 0xb8,
 130     [0x01] = LOW(SIGNATURE),
 131     [0x02] = HIGH(SIGNATURE),
 132     /* 7c03:  mov %ax,0x7c10 */
 133     [0x03] = 0xa3,
 134     [0x04] = LOW(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),
 135     [0x05] = HIGH(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),
 136     /* 7c06: cli */
 137     [0x06] = 0xfa,
 138     /* 7c07: hlt */
 139     [0x07] = 0xf4,
 140     /* 7c08: jmp 0x7c07=0x7c0a-3 */
 141     [0x08] = 0xeb,
 142     [0x09] = LOW(-3),
 143     /* We mov 0xdead here: set value to make debugging easier */
 144     [SIGNATURE_OFFSET] = LOW(0xface),
 145     [SIGNATURE_OFFSET + 1] = HIGH(0xface),
 146     /* End of boot sector marker */
 147     [0x1FE] = 0x55,
 148     [0x1FF] = 0xAA,
 149 };
 150
 151 static const char *disk = "tests/acpi-test-disk.raw";
 152 static const char *data_dir = "tests/acpi-test-data";
 153 #ifdef CONFIG_IASL
 154 static const char *iasl = stringify(CONFIG_IASL);
 155 #else
 156 static const char *iasl;
 157 #endif
 158
 159 static void free_test_data(test_data *data)
 160 {
 161     AcpiSdtTable *temp;
 162     int i;
 163
 164     g_free(data->rsdt_tables_addr);
 165
 166     for (i = 0; i < data->tables->len; ++i) {
 167         temp = &g_array_index(data->tables, AcpiSdtTable, i);
 168         g_free(temp->aml);
 169         if (temp->aml_file &&
 170             !temp->tmp_files_retain &&
 171             g_strstr_len(temp->aml_file, -1, "aml-")) {
 172             unlink(temp->aml_file);
 173         }
 174         g_free(temp->aml_file);
 175         g_free(temp->asl);
 176         if (temp->asl_file &&
 177             !temp->tmp_files_retain) {
 178             unlink(temp->asl_file);
 179         }
 180         g_free(temp->asl_file);
 181     }
 182
 183     g_array_free(data->tables, false);
 184 }
 185
 186 static uint8_t acpi_checksum(const uint8_t *data, int len)
 187 {
 188     int i;
 189     uint8_t sum = 0;
 190
 191     for (i = 0; i < len; i++) {
 192         sum += data[i];
 193     }
 194
 195     return sum;
 196 }
 197
 198 static void test_acpi_rsdp_address(test_data *data)
 199 {
 200     uint32_t off;
 201
 202     /* OK, now find RSDP */
 203     for (off = 0xf0000; off < 0x100000; off += 0x10) {
 204         uint8_t sig[] = "RSD PTR ";
 205         int i;
 206
 207         for (i = 0; i < sizeof sig - 1; ++i) {
 208             sig[i] = readb(off + i);
 209         }
 210
 211         if (!memcmp(sig, "RSD PTR ", sizeof sig)) {
 212             break;
 213         }
 214     }
 215
 216     g_assert_cmphex(off, <, 0x100000);
 217     data->rsdp_addr = off;
 218 }
 219
 220 static void test_acpi_rsdp_table(test_data *data)
 221 {
 222     AcpiRsdpDescriptor *rsdp_table = &data->rsdp_table;
 223     uint32_t addr = data->rsdp_addr;
 224
 225     ACPI_READ_FIELD(rsdp_table->signature, addr);
 226     ACPI_ASSERT_CMP64(rsdp_table->signature, "RSD PTR ");
 227
 228     ACPI_READ_FIELD(rsdp_table->checksum, addr);
 229     ACPI_READ_ARRAY(rsdp_table->oem_id, addr);
 230     ACPI_READ_FIELD(rsdp_table->revision, addr);
 231     ACPI_READ_FIELD(rsdp_table->rsdt_physical_address, addr);
 232     ACPI_READ_FIELD(rsdp_table->length, addr);
 233
 234     /* rsdp checksum is not for the whole table, but for the first 20 bytes */
 235     g_assert(!acpi_checksum((uint8_t *)rsdp_table, 20));
 236 }
 237
 238 static void test_acpi_rsdt_table(test_data *data)
 239 {
 240     AcpiRsdtDescriptorRev1 *rsdt_table = &data->rsdt_table;
 241     uint32_t addr = data->rsdp_table.rsdt_physical_address;
 242     uint32_t *tables;
 243     int tables_nr;
 244     uint8_t checksum;
 245
 246     /* read the header */
 247     ACPI_READ_TABLE_HEADER(rsdt_table, addr);
 248     ACPI_ASSERT_CMP(rsdt_table->signature, "RSDT");
 249
 250     /* compute the table entries in rsdt */
 251     tables_nr = (rsdt_table->length - sizeof(AcpiRsdtDescriptorRev1)) /
 252                 sizeof(uint32_t);
 253     g_assert_cmpint(tables_nr, >, 0);
 254
 255     /* get the addresses of the tables pointed by rsdt */
 256     tables = g_new0(uint32_t, tables_nr);
 257     ACPI_READ_ARRAY_PTR(tables, tables_nr, addr);
 258
 259     checksum = acpi_checksum((uint8_t *)rsdt_table, rsdt_table->length) +
 260                acpi_checksum((uint8_t *)tables, tables_nr * sizeof(uint32_t));
 261     g_assert(!checksum);
 262
 263    /* SSDT tables after FADT */
 264     data->rsdt_tables_addr = tables;
 265     data->rsdt_tables_nr = tables_nr;
 266 }
 267
 268 static void test_acpi_fadt_table(test_data *data)
 269 {
 270     AcpiFadtDescriptorRev1 *fadt_table = &data->fadt_table;
 271     uint32_t addr;
 272
 273     /* FADT table comes first */
 274     addr = data->rsdt_tables_addr[0];
 275     ACPI_READ_TABLE_HEADER(fadt_table, addr);
 276
 277     ACPI_READ_FIELD(fadt_table->firmware_ctrl, addr);
 278     ACPI_READ_FIELD(fadt_table->dsdt, addr);
 279     ACPI_READ_FIELD(fadt_table->model, addr);
 280     ACPI_READ_FIELD(fadt_table->reserved1, addr);
 281     ACPI_READ_FIELD(fadt_table->sci_int, addr);
 282     ACPI_READ_FIELD(fadt_table->smi_cmd, addr);
 283     ACPI_READ_FIELD(fadt_table->acpi_enable, addr);
 284     ACPI_READ_FIELD(fadt_table->acpi_disable, addr);
 285     ACPI_READ_FIELD(fadt_table->S4bios_req, addr);
 286     ACPI_READ_FIELD(fadt_table->reserved2, addr);
 287     ACPI_READ_FIELD(fadt_table->pm1a_evt_blk, addr);
 288     ACPI_READ_FIELD(fadt_table->pm1b_evt_blk, addr);
 289     ACPI_READ_FIELD(fadt_table->pm1a_cnt_blk, addr);
 290     ACPI_READ_FIELD(fadt_table->pm1b_cnt_blk, addr);
 291     ACPI_READ_FIELD(fadt_table->pm2_cnt_blk, addr);
 292     ACPI_READ_FIELD(fadt_table->pm_tmr_blk, addr);
 293     ACPI_READ_FIELD(fadt_table->gpe0_blk, addr);
 294     ACPI_READ_FIELD(fadt_table->gpe1_blk, addr);
 295     ACPI_READ_FIELD(fadt_table->pm1_evt_len, addr);
 296     ACPI_READ_FIELD(fadt_table->pm1_cnt_len, addr);
 297     ACPI_READ_FIELD(fadt_table->pm2_cnt_len, addr);
 298     ACPI_READ_FIELD(fadt_table->pm_tmr_len, addr);
 299     ACPI_READ_FIELD(fadt_table->gpe0_blk_len, addr);
 300     ACPI_READ_FIELD(fadt_table->gpe1_blk_len, addr);
 301     ACPI_READ_FIELD(fadt_table->gpe1_base, addr);
 302     ACPI_READ_FIELD(fadt_table->reserved3, addr);
 303     ACPI_READ_FIELD(fadt_table->plvl2_lat, addr);
 304     ACPI_READ_FIELD(fadt_table->plvl3_lat, addr);
 305     ACPI_READ_FIELD(fadt_table->flush_size, addr);
 306     ACPI_READ_FIELD(fadt_table->flush_stride, addr);
 307     ACPI_READ_FIELD(fadt_table->duty_offset, addr);
 308     ACPI_READ_FIELD(fadt_table->duty_width, addr);
 309     ACPI_READ_FIELD(fadt_table->day_alrm, addr);
 310     ACPI_READ_FIELD(fadt_table->mon_alrm, addr);
 311     ACPI_READ_FIELD(fadt_table->century, addr);
 312     ACPI_READ_FIELD(fadt_table->reserved4, addr);
 313     ACPI_READ_FIELD(fadt_table->reserved4a, addr);
 314     ACPI_READ_FIELD(fadt_table->reserved4b, addr);
 315     ACPI_READ_FIELD(fadt_table->flags, addr);
 316
 317     ACPI_ASSERT_CMP(fadt_table->signature, "FACP");
 318     g_assert(!acpi_checksum((uint8_t *)fadt_table, fadt_table->length));
 319 }
 320
 321 static void test_acpi_facs_table(test_data *data)
 322 {
 323     AcpiFacsDescriptorRev1 *facs_table = &data->facs_table;
 324     uint32_t addr = data->fadt_table.firmware_ctrl;
 325
 326     ACPI_READ_FIELD(facs_table->signature, addr);
 327     ACPI_READ_FIELD(facs_table->length, addr);
 328     ACPI_READ_FIELD(facs_table->hardware_signature, addr);
 329     ACPI_READ_FIELD(facs_table->firmware_waking_vector, addr);
 330     ACPI_READ_FIELD(facs_table->global_lock, addr);
 331     ACPI_READ_FIELD(facs_table->flags, addr);
 332     ACPI_READ_ARRAY(facs_table->resverved3, addr);
 333
 334     ACPI_ASSERT_CMP(facs_table->signature, "FACS");
 335 }
 336
 337 static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
 338 {
 339     uint8_t checksum;
 340
 341     ACPI_READ_TABLE_HEADER(&sdt_table->header, addr);
 342
 343     sdt_table->aml_len = sdt_table->header.length - sizeof(AcpiTableHeader);
 344     sdt_table->aml = g_malloc0(sdt_table->aml_len);
 345     ACPI_READ_ARRAY_PTR(sdt_table->aml, sdt_table->aml_len, addr);
 346
 347     checksum = acpi_checksum((uint8_t *)sdt_table, sizeof(AcpiTableHeader)) +
 348                acpi_checksum((uint8_t *)sdt_table->aml, sdt_table->aml_len);
 349     g_assert(!checksum);
 350 }
 351
 352 static void test_acpi_dsdt_table(test_data *data)
 353 {
 354     AcpiSdtTable dsdt_table;
 355     uint32_t addr = data->fadt_table.dsdt;
 356
 357     memset(&dsdt_table, 0, sizeof(dsdt_table));
 358     data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
 359
 360     test_dst_table(&dsdt_table, addr);
 361     ACPI_ASSERT_CMP(dsdt_table.header.signature, "DSDT");
 362
 363     /* Place DSDT first */
 364     g_array_append_val(data->tables, dsdt_table);
 365 }
 366
 367 static void test_acpi_tables(test_data *data)
 368 {
 369     int tables_nr = data->rsdt_tables_nr - 1; /* fadt is first */
 370     int i;
 371
 372     for (i = 0; i < tables_nr; i++) {
 373         AcpiSdtTable ssdt_table;
 374
 375         memset(&ssdt_table, 0 , sizeof(ssdt_table));
 376         uint32_t addr = data->rsdt_tables_addr[i + 1]; /* fadt is first */
 377         test_dst_table(&ssdt_table, addr);
 378         g_array_append_val(data->tables, ssdt_table);
 379     }
 380 }
 381
 382 static void dump_aml_files(test_data *data, bool rebuild)
 383 {
 384     AcpiSdtTable *sdt;
 385     GError *error = NULL;
 386     gchar *aml_file = NULL;
 387     gint fd;
 388     ssize_t ret;
 389     int i;
 390
 391     for (i = 0; i < data->tables->len; ++i) {
 392         const char *ext = data->variant ? data->variant : "";
 393         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 394         g_assert(sdt->aml);
 395
 396         if (rebuild) {
 397             uint32_t signature = cpu_to_le32(sdt->header.signature);
 398             aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
 399                                        (gchar *)&signature, ext);
 400             fd = g_open(aml_file, O_WRONLY|O_TRUNC|O_CREAT,
 401                         S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH);
 402         } else {
 403             fd = g_file_open_tmp("aml-XXXXXX", &sdt->aml_file, &error);
 404             g_assert_no_error(error);
 405         }
 406         g_assert(fd >= 0);
 407
 408         ret = qemu_write_full(fd, sdt, sizeof(AcpiTableHeader));
 409         g_assert(ret == sizeof(AcpiTableHeader));
 410         ret = qemu_write_full(fd, sdt->aml, sdt->aml_len);
 411         g_assert(ret == sdt->aml_len);
 412
 413         close(fd);
 414
 415         g_free(aml_file);
 416     }
 417 }
 418
 419 static bool compare_signature(AcpiSdtTable *sdt, const char *signature)
 420 {
 421    return !memcmp(&sdt->header.signature, signature, 4);
 422 }
 423
 424 static bool load_asl(GArray *sdts, AcpiSdtTable *sdt)
 425 {
 426     AcpiSdtTable *temp;
 427     GError *error = NULL;
 428     GString *command_line = g_string_new(iasl);
 429     gint fd;
 430     gchar *out, *out_err;
 431     gboolean ret;
 432     int i;
 433
 434     fd = g_file_open_tmp("asl-XXXXXX.dsl", &sdt->asl_file, &error);
 435     g_assert_no_error(error);
 436     close(fd);
 437
 438     /* build command line */
 439     g_string_append_printf(command_line, " -p %s ", sdt->asl_file);
 440     if (compare_signature(sdt, "DSDT") ||
 441         compare_signature(sdt, "SSDT")) {
 442         for (i = 0; i < sdts->len; ++i) {
 443             temp = &g_array_index(sdts, AcpiSdtTable, i);
 444             if (compare_signature(temp, "DSDT") ||
 445                 compare_signature(temp, "SSDT")) {
 446                 g_string_append_printf(command_line, "-e %s ", temp->aml_file);
 447             }
 448         }
 449     }
 450     g_string_append_printf(command_line, "-d %s", sdt->aml_file);
 451
 452     /* pass 'out' and 'out_err' in order to be redirected */
 453     ret = g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
 454     g_assert_no_error(error);
 455     if (ret) {
 456         ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
 457                                   &sdt->asl_len, &error);
 458         g_assert(ret);
 459         g_assert_no_error(error);
 460         ret = (sdt->asl_len > 0);
 461     }
 462
 463     g_free(out);
 464     g_free(out_err);
 465     g_string_free(command_line, true);
 466
 467     return !ret;
 468 }
 469
 470 #define COMMENT_END "*/"
 471 #define DEF_BLOCK "DefinitionBlock ("
 472 #define BLOCK_NAME_END ".aml"
 473
 474 static GString *normalize_asl(gchar *asl_code)
 475 {
 476     GString *asl = g_string_new(asl_code);
 477     gchar *comment, *block_name;
 478
 479     /* strip comments (different generation days) */
 480     comment = g_strstr_len(asl->str, asl->len, COMMENT_END);
 481     if (comment) {
 482         comment += strlen(COMMENT_END);
 483         while (*comment == '\n') {
 484             comment++;
 485         }
 486         asl = g_string_erase(asl, 0, comment - asl->str);
 487     }
 488
 489     /* strip def block name (it has file path in it) */
 490     if (g_str_has_prefix(asl->str, DEF_BLOCK)) {
 491         block_name = g_strstr_len(asl->str, asl->len, BLOCK_NAME_END);
 492         g_assert(block_name);
 493         asl = g_string_erase(asl, 0,
 494                              block_name + sizeof(BLOCK_NAME_END) - asl->str);
 495     }
 496
 497     return asl;
 498 }
 499
 500 static GArray *load_expected_aml(test_data *data)
 501 {
 502     int i;
 503     AcpiSdtTable *sdt;
 504     gchar *aml_file = NULL;
 505     GError *error = NULL;
 506     gboolean ret;
 507
 508     GArray *exp_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
 509     for (i = 0; i < data->tables->len; ++i) {
 510         AcpiSdtTable exp_sdt;
 511         uint32_t signature;
 512         const char *ext = data->variant ? data->variant : "";
 513
 514         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 515
 516         memset(&exp_sdt, 0, sizeof(exp_sdt));
 517         exp_sdt.header.signature = sdt->header.signature;
 518
 519         signature = cpu_to_le32(sdt->header.signature);
 520
 521 try_again:
 522         aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
 523                                    (gchar *)&signature, ext);
 524         if (data->variant && !g_file_test(aml_file, G_FILE_TEST_EXISTS)) {
 525             g_free(aml_file);
 526             ext = "";
 527             goto try_again;
 528         }
 529         exp_sdt.aml_file = aml_file;
 530         g_assert(g_file_test(aml_file, G_FILE_TEST_EXISTS));
 531         ret = g_file_get_contents(aml_file, &exp_sdt.aml,
 532                                   &exp_sdt.aml_len, &error);
 533         g_assert(ret);
 534         g_assert_no_error(error);
 535         g_assert(exp_sdt.aml);
 536         g_assert(exp_sdt.aml_len);
 537
 538         g_array_append_val(exp_tables, exp_sdt);
 539     }
 540
 541     return exp_tables;
 542 }
 543
 544 static void test_acpi_asl(test_data *data)
 545 {
 546     int i;
 547     AcpiSdtTable *sdt, *exp_sdt;
 548     test_data exp_data;
 549     gboolean exp_err, err;
 550
 551     memset(&exp_data, 0, sizeof(exp_data));
 552     exp_data.tables = load_expected_aml(data);
 553     dump_aml_files(data, false);
 554     for (i = 0; i < data->tables->len; ++i) {
 555         GString *asl, *exp_asl;
 556
 557         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 558         exp_sdt = &g_array_index(exp_data.tables, AcpiSdtTable, i);
 559
 560         err = load_asl(data->tables, sdt);
 561         asl = normalize_asl(sdt->asl);
 562
 563         exp_err = load_asl(exp_data.tables, exp_sdt);
 564         exp_asl = normalize_asl(exp_sdt->asl);
 565
 566         /* TODO: check for warnings */
 567         g_assert(!err || exp_err);
 568
 569         if (g_strcmp0(asl->str, exp_asl->str)) {
 570             if (exp_err) {
 571                 fprintf(stderr,
 572                         "Warning! iasl couldn't parse the expected aml\n");
 573             } else {
 574                 uint32_t signature = cpu_to_le32(exp_sdt->header.signature);
 575                 sdt->tmp_files_retain = true;
 576                 exp_sdt->tmp_files_retain = true;
 577                 fprintf(stderr,
 578                         "acpi-test: Warning! %.4s mismatch. "
 579                         "Actual [asl:%s, aml:%s], Expected [asl:%s, aml:%s].\n",
 580                         (gchar *)&signature,
 581                         sdt->asl_file, sdt->aml_file,
 582                         exp_sdt->asl_file, exp_sdt->aml_file);
 583                 if (getenv("V")) {
 584                     const char *diff_cmd = getenv("DIFF");
 585                     if (diff_cmd) {
 586                         int ret G_GNUC_UNUSED;
 587                         char *diff = g_strdup_printf("%s %s %s", diff_cmd,
 588                             exp_sdt->asl_file, sdt->asl_file);
 589                         ret = system(diff) ;
 590                         g_free(diff);
 591                     } else {
 592                         fprintf(stderr, "acpi-test: Warning. not showing "
 593                             "difference since no diff utility is specified. "
 594                             "Set 'DIFF' environment variable to a preferred "
 595                             "diff utility and run 'make V=1 check' again to "
 596                             "see ASL difference.");
 597                     }
 598                 }
 599           }
 600         }
 601         g_string_free(asl, true);
 602         g_string_free(exp_asl, true);
 603     }
 604
 605     free_test_data(&exp_data);
 606 }
 607
 608 static bool smbios_ep_table_ok(test_data *data)
 609 {
 610     struct smbios_21_entry_point *ep_table = &data->smbios_ep_table;
 611     uint32_t addr = data->smbios_ep_addr;
 612
 613     ACPI_READ_ARRAY(ep_table->anchor_string, addr);
 614     if (memcmp(ep_table->anchor_string, "_SM_", 4)) {
 615         return false;
 616     }
 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     if (memcmp(ep_table->intermediate_anchor_string, "_DMI_", 5)) {
 626         return false;
 627     }
 628     ACPI_READ_FIELD(ep_table->intermediate_checksum, addr);
 629     ACPI_READ_FIELD(ep_table->structure_table_length, addr);
 630     if (ep_table->structure_table_length == 0) {
 631         return false;
 632     }
 633     ACPI_READ_FIELD(ep_table->structure_table_address, addr);
 634     ACPI_READ_FIELD(ep_table->number_of_structures, addr);
 635     if (ep_table->number_of_structures == 0) {
 636         return false;
 637     }
 638     ACPI_READ_FIELD(ep_table->smbios_bcd_revision, addr);
 639     if (acpi_checksum((uint8_t *)ep_table, sizeof *ep_table) ||
 640         acpi_checksum((uint8_t *)ep_table + 0x10, sizeof *ep_table - 0x10)) {
 641         return false;
 642     }
 643     return true;
 644 }
 645
 646 static void test_smbios_entry_point(test_data *data)
 647 {
 648     uint32_t off;
 649
 650     /* find smbios entry point structure */
 651     for (off = 0xf0000; off < 0x100000; off += 0x10) {
 652         uint8_t sig[] = "_SM_";
 653         int i;
 654
 655         for (i = 0; i < sizeof sig - 1; ++i) {
 656             sig[i] = readb(off + i);
 657         }
 658
 659         if (!memcmp(sig, "_SM_", sizeof sig)) {
 660             /* signature match, but is this a valid entry point? */
 661             data->smbios_ep_addr = off;
 662             if (smbios_ep_table_ok(data)) {
 663                 break;
 664             }
 665         }
 666     }
 667
 668     g_assert_cmphex(off, <, 0x100000);
 669 }
 670
 671 static inline bool smbios_single_instance(uint8_t type)
 672 {
 673     switch (type) {
 674     case 0:
 675     case 1:
 676     case 2:
 677     case 3:
 678     case 16:
 679     case 32:
 680     case 127:
 681         return true;
 682     default:
 683         return false;
 684     }
 685 }
 686
 687 static void test_smbios_structs(test_data *data)
 688 {
 689     DECLARE_BITMAP(struct_bitmap, SMBIOS_MAX_TYPE+1) = { 0 };
 690     struct smbios_21_entry_point *ep_table = &data->smbios_ep_table;
 691     uint32_t addr = ep_table->structure_table_address;
 692     int i, len, max_len = 0;
 693     uint8_t type, prv, crt;
 694     uint8_t required_struct_types[] = {0, 1, 3, 4, 16, 17, 19, 32, 127};
 695
 696     /* walk the smbios tables */
 697     for (i = 0; i < ep_table->number_of_structures; i++) {
 698
 699         /* grab type and formatted area length from struct header */
 700         type = readb(addr);
 701         g_assert_cmpuint(type, <=, SMBIOS_MAX_TYPE);
 702         len = readb(addr + 1);
 703
 704         /* single-instance structs must not have been encountered before */
 705         if (smbios_single_instance(type)) {
 706             g_assert(!test_bit(type, struct_bitmap));
 707         }
 708         set_bit(type, struct_bitmap);
 709
 710         /* seek to end of unformatted string area of this struct ("\0\0") */
 711         prv = crt = 1;
 712         while (prv || crt) {
 713             prv = crt;
 714             crt = readb(addr + len);
 715             len++;
 716         }
 717
 718         /* keep track of max. struct size */
 719         if (max_len < len) {
 720             max_len = len;
 721             g_assert_cmpuint(max_len, <=, ep_table->max_structure_size);
 722         }
 723
 724         /* start of next structure */
 725         addr += len;
 726     }
 727
 728     /* total table length and max struct size must match entry point values */
 729     g_assert_cmpuint(ep_table->structure_table_length, ==,
 730                      addr - ep_table->structure_table_address);
 731     g_assert_cmpuint(ep_table->max_structure_size, ==, max_len);
 732
 733     /* required struct types must all be present */
 734     for (i = 0; i < ARRAY_SIZE(required_struct_types); i++) {
 735         g_assert(test_bit(required_struct_types[i], struct_bitmap));
 736     }
 737 }
 738
 739 static void test_acpi_one(const char *params, test_data *data)
 740 {
 741     char *args;
 742     uint8_t signature_low;
 743     uint8_t signature_high;
 744     uint16_t signature;
 745     int i;
 746
 747     args = g_strdup_printf("-net none -display none %s "
 748                            "-drive id=hd0,if=none,file=%s,format=raw "
 749                            "-device ide-hd,drive=hd0 ",
 750                            params ? params : "", disk);
 751
 752     qtest_start(args);
 753
 754    /* Wait at most 1 minute */
 755 #define TEST_DELAY (1 * G_USEC_PER_SEC / 10)
 756 #define TEST_CYCLES MAX((60 * G_USEC_PER_SEC / TEST_DELAY), 1)
 757
 758     /* Poll until code has run and modified memory.  Once it has we know BIOS
 759      * initialization is done.  TODO: check that IP reached the halt
 760      * instruction.
 761      */
 762     for (i = 0; i < TEST_CYCLES; ++i) {
 763         signature_low = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET);
 764         signature_high = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET + 1);
 765         signature = (signature_high << 8) | signature_low;
 766         if (signature == SIGNATURE) {
 767             break;
 768         }
 769         g_usleep(TEST_DELAY);
 770     }
 771     g_assert_cmphex(signature, ==, SIGNATURE);
 772
 773     test_acpi_rsdp_address(data);
 774     test_acpi_rsdp_table(data);
 775     test_acpi_rsdt_table(data);
 776     test_acpi_fadt_table(data);
 777     test_acpi_facs_table(data);
 778     test_acpi_dsdt_table(data);
 779     test_acpi_tables(data);
 780
 781     if (iasl) {
 782         if (getenv(ACPI_REBUILD_EXPECTED_AML)) {
 783             dump_aml_files(data, true);
 784         } else {
 785             test_acpi_asl(data);
 786         }
 787     }
 788
 789     test_smbios_entry_point(data);
 790     test_smbios_structs(data);
 791
 792     qtest_quit(global_qtest);
 793     g_free(args);
 794 }
 795
 796 static void test_acpi_piix4_tcg(void)
 797 {
 798     test_data data;
 799
 800     /* Supplying -machine accel argument overrides the default (qtest).
 801      * This is to make guest actually run.
 802      */
 803     memset(&data, 0, sizeof(data));
 804     data.machine = MACHINE_PC;
 805     test_acpi_one("-machine accel=tcg", &data);
 806     free_test_data(&data);
 807 }
 808
 809 static void test_acpi_piix4_tcg_bridge(void)
 810 {
 811     test_data data;
 812
 813     memset(&data, 0, sizeof(data));
 814     data.machine = MACHINE_PC;
 815     data.variant = ".bridge";
 816     test_acpi_one("-machine accel=tcg -device pci-bridge,chassis_nr=1", &data);
 817     free_test_data(&data);
 818 }
 819
 820 static void test_acpi_q35_tcg(void)
 821 {
 822     test_data data;
 823
 824     memset(&data, 0, sizeof(data));
 825     data.machine = MACHINE_Q35;
 826     test_acpi_one("-machine q35,accel=tcg", &data);
 827     free_test_data(&data);
 828 }
 829
 830 static void test_acpi_q35_tcg_bridge(void)
 831 {
 832     test_data data;
 833
 834     memset(&data, 0, sizeof(data));
 835     data.machine = MACHINE_Q35;
 836     data.variant = ".bridge";
 837     test_acpi_one("-machine q35,accel=tcg -device pci-bridge,chassis_nr=1",
 838                   &data);
 839     free_test_data(&data);
 840 }
 841
 842 int main(int argc, char *argv[])
 843 {
 844     const char *arch = qtest_get_arch();
 845     FILE *f = fopen(disk, "w");
 846     int ret;
 847
 848     if (!f) {
 849         fprintf(stderr, "Couldn't open \"%s\": %s", disk, strerror(errno));
 850         return 1;
 851     }
 852     fwrite(boot_sector, 1, sizeof boot_sector, f);
 853     fclose(f);
 854
 855     g_test_init(&argc, &argv, NULL);
 856
 857     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 858         qtest_add_func("acpi/piix4/tcg", test_acpi_piix4_tcg);
 859         qtest_add_func("acpi/piix4/tcg/bridge", test_acpi_piix4_tcg_bridge);
 860         qtest_add_func("acpi/q35/tcg", test_acpi_q35_tcg);
 861         qtest_add_func("acpi/q35/tcg/bridge", test_acpi_q35_tcg_bridge);
 862     }
 863     ret = g_test_run();
 864     unlink(disk);
 865     return ret;
 866 }