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/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     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_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     if (data->rsdt_tables_addr) {
 165         g_free(data->rsdt_tables_addr);
 166     }
 167
 168     for (i = 0; i < data->tables->len; ++i) {
 169         temp = &g_array_index(data->tables, AcpiSdtTable, i);
 170         if (temp->aml) {
 171             g_free(temp->aml);
 172         }
 173         if (temp->aml_file) {
 174             if (!temp->tmp_files_retain &&
 175                 g_strstr_len(temp->aml_file, -1, "aml-")) {
 176                 unlink(temp->aml_file);
 177             }
 178             g_free(temp->aml_file);
 179         }
 180         if (temp->asl) {
 181             g_free(temp->asl);
 182         }
 183         if (temp->asl_file) {
 184             if (!temp->tmp_files_retain) {
 185                 unlink(temp->asl_file);
 186             }
 187             g_free(temp->asl_file);
 188         }
 189     }
 190
 191     g_array_free(data->tables, false);
 192 }
 193
 194 static uint8_t acpi_checksum(const uint8_t *data, int len)
 195 {
 196     int i;
 197     uint8_t sum = 0;
 198
 199     for (i = 0; i < len; i++) {
 200         sum += data[i];
 201     }
 202
 203     return sum;
 204 }
 205
 206 static void test_acpi_rsdp_address(test_data *data)
 207 {
 208     uint32_t off;
 209
 210     /* OK, now find RSDP */
 211     for (off = 0xf0000; off < 0x100000; off += 0x10) {
 212         uint8_t sig[] = "RSD PTR ";
 213         int i;
 214
 215         for (i = 0; i < sizeof sig - 1; ++i) {
 216             sig[i] = readb(off + i);
 217         }
 218
 219         if (!memcmp(sig, "RSD PTR ", sizeof sig)) {
 220             break;
 221         }
 222     }
 223
 224     g_assert_cmphex(off, <, 0x100000);
 225     data->rsdp_addr = off;
 226 }
 227
 228 static void test_acpi_rsdp_table(test_data *data)
 229 {
 230     AcpiRsdpDescriptor *rsdp_table = &data->rsdp_table;
 231     uint32_t addr = data->rsdp_addr;
 232
 233     ACPI_READ_FIELD(rsdp_table->signature, addr);
 234     ACPI_ASSERT_CMP64(rsdp_table->signature, "RSD PTR ");
 235
 236     ACPI_READ_FIELD(rsdp_table->checksum, addr);
 237     ACPI_READ_ARRAY(rsdp_table->oem_id, addr);
 238     ACPI_READ_FIELD(rsdp_table->revision, addr);
 239     ACPI_READ_FIELD(rsdp_table->rsdt_physical_address, addr);
 240     ACPI_READ_FIELD(rsdp_table->length, addr);
 241
 242     /* rsdp checksum is not for the whole table, but for the first 20 bytes */
 243     g_assert(!acpi_checksum((uint8_t *)rsdp_table, 20));
 244 }
 245
 246 static void test_acpi_rsdt_table(test_data *data)
 247 {
 248     AcpiRsdtDescriptorRev1 *rsdt_table = &data->rsdt_table;
 249     uint32_t addr = data->rsdp_table.rsdt_physical_address;
 250     uint32_t *tables;
 251     int tables_nr;
 252     uint8_t checksum;
 253
 254     /* read the header */
 255     ACPI_READ_TABLE_HEADER(rsdt_table, addr);
 256     ACPI_ASSERT_CMP(rsdt_table->signature, "RSDT");
 257
 258     /* compute the table entries in rsdt */
 259     tables_nr = (rsdt_table->length - sizeof(AcpiRsdtDescriptorRev1)) /
 260                 sizeof(uint32_t);
 261     g_assert_cmpint(tables_nr, >, 0);
 262
 263     /* get the addresses of the tables pointed by rsdt */
 264     tables = g_new0(uint32_t, tables_nr);
 265     ACPI_READ_ARRAY_PTR(tables, tables_nr, addr);
 266
 267     checksum = acpi_checksum((uint8_t *)rsdt_table, rsdt_table->length) +
 268                acpi_checksum((uint8_t *)tables, tables_nr * sizeof(uint32_t));
 269     g_assert(!checksum);
 270
 271    /* SSDT tables after FADT */
 272     data->rsdt_tables_addr = tables;
 273     data->rsdt_tables_nr = tables_nr;
 274 }
 275
 276 static void test_acpi_fadt_table(test_data *data)
 277 {
 278     AcpiFadtDescriptorRev1 *fadt_table = &data->fadt_table;
 279     uint32_t addr;
 280
 281     /* FADT table comes first */
 282     addr = data->rsdt_tables_addr[0];
 283     ACPI_READ_TABLE_HEADER(fadt_table, addr);
 284
 285     ACPI_READ_FIELD(fadt_table->firmware_ctrl, addr);
 286     ACPI_READ_FIELD(fadt_table->dsdt, addr);
 287     ACPI_READ_FIELD(fadt_table->model, addr);
 288     ACPI_READ_FIELD(fadt_table->reserved1, addr);
 289     ACPI_READ_FIELD(fadt_table->sci_int, addr);
 290     ACPI_READ_FIELD(fadt_table->smi_cmd, addr);
 291     ACPI_READ_FIELD(fadt_table->acpi_enable, addr);
 292     ACPI_READ_FIELD(fadt_table->acpi_disable, addr);
 293     ACPI_READ_FIELD(fadt_table->S4bios_req, addr);
 294     ACPI_READ_FIELD(fadt_table->reserved2, addr);
 295     ACPI_READ_FIELD(fadt_table->pm1a_evt_blk, addr);
 296     ACPI_READ_FIELD(fadt_table->pm1b_evt_blk, addr);
 297     ACPI_READ_FIELD(fadt_table->pm1a_cnt_blk, addr);
 298     ACPI_READ_FIELD(fadt_table->pm1b_cnt_blk, addr);
 299     ACPI_READ_FIELD(fadt_table->pm2_cnt_blk, addr);
 300     ACPI_READ_FIELD(fadt_table->pm_tmr_blk, addr);
 301     ACPI_READ_FIELD(fadt_table->gpe0_blk, addr);
 302     ACPI_READ_FIELD(fadt_table->gpe1_blk, addr);
 303     ACPI_READ_FIELD(fadt_table->pm1_evt_len, addr);
 304     ACPI_READ_FIELD(fadt_table->pm1_cnt_len, addr);
 305     ACPI_READ_FIELD(fadt_table->pm2_cnt_len, addr);
 306     ACPI_READ_FIELD(fadt_table->pm_tmr_len, addr);
 307     ACPI_READ_FIELD(fadt_table->gpe0_blk_len, addr);
 308     ACPI_READ_FIELD(fadt_table->gpe1_blk_len, addr);
 309     ACPI_READ_FIELD(fadt_table->gpe1_base, addr);
 310     ACPI_READ_FIELD(fadt_table->reserved3, addr);
 311     ACPI_READ_FIELD(fadt_table->plvl2_lat, addr);
 312     ACPI_READ_FIELD(fadt_table->plvl3_lat, addr);
 313     ACPI_READ_FIELD(fadt_table->flush_size, addr);
 314     ACPI_READ_FIELD(fadt_table->flush_stride, addr);
 315     ACPI_READ_FIELD(fadt_table->duty_offset, addr);
 316     ACPI_READ_FIELD(fadt_table->duty_width, addr);
 317     ACPI_READ_FIELD(fadt_table->day_alrm, addr);
 318     ACPI_READ_FIELD(fadt_table->mon_alrm, addr);
 319     ACPI_READ_FIELD(fadt_table->century, addr);
 320     ACPI_READ_FIELD(fadt_table->reserved4, addr);
 321     ACPI_READ_FIELD(fadt_table->reserved4a, addr);
 322     ACPI_READ_FIELD(fadt_table->reserved4b, addr);
 323     ACPI_READ_FIELD(fadt_table->flags, addr);
 324
 325     ACPI_ASSERT_CMP(fadt_table->signature, "FACP");
 326     g_assert(!acpi_checksum((uint8_t *)fadt_table, fadt_table->length));
 327 }
 328
 329 static void test_acpi_facs_table(test_data *data)
 330 {
 331     AcpiFacsDescriptorRev1 *facs_table = &data->facs_table;
 332     uint32_t addr = data->fadt_table.firmware_ctrl;
 333
 334     ACPI_READ_FIELD(facs_table->signature, addr);
 335     ACPI_READ_FIELD(facs_table->length, addr);
 336     ACPI_READ_FIELD(facs_table->hardware_signature, addr);
 337     ACPI_READ_FIELD(facs_table->firmware_waking_vector, addr);
 338     ACPI_READ_FIELD(facs_table->global_lock, addr);
 339     ACPI_READ_FIELD(facs_table->flags, addr);
 340     ACPI_READ_ARRAY(facs_table->resverved3, addr);
 341
 342     ACPI_ASSERT_CMP(facs_table->signature, "FACS");
 343 }
 344
 345 static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
 346 {
 347     uint8_t checksum;
 348
 349     ACPI_READ_TABLE_HEADER(&sdt_table->header, addr);
 350
 351     sdt_table->aml_len = sdt_table->header.length - sizeof(AcpiTableHeader);
 352     sdt_table->aml = g_malloc0(sdt_table->aml_len);
 353     ACPI_READ_ARRAY_PTR(sdt_table->aml, sdt_table->aml_len, addr);
 354
 355     checksum = acpi_checksum((uint8_t *)sdt_table, sizeof(AcpiTableHeader)) +
 356                acpi_checksum((uint8_t *)sdt_table->aml, sdt_table->aml_len);
 357     g_assert(!checksum);
 358 }
 359
 360 static void test_acpi_dsdt_table(test_data *data)
 361 {
 362     AcpiSdtTable dsdt_table;
 363     uint32_t addr = data->fadt_table.dsdt;
 364
 365     memset(&dsdt_table, 0, sizeof(dsdt_table));
 366     data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
 367
 368     test_dst_table(&dsdt_table, addr);
 369     ACPI_ASSERT_CMP(dsdt_table.header.signature, "DSDT");
 370
 371     /* Place DSDT first */
 372     g_array_append_val(data->tables, dsdt_table);
 373 }
 374
 375 static void test_acpi_tables(test_data *data)
 376 {
 377     int tables_nr = data->rsdt_tables_nr - 1; /* fadt is first */
 378     int i;
 379
 380     for (i = 0; i < tables_nr; i++) {
 381         AcpiSdtTable ssdt_table;
 382
 383         memset(&ssdt_table, 0 , sizeof(ssdt_table));
 384         uint32_t addr = data->rsdt_tables_addr[i + 1]; /* fadt is first */
 385         test_dst_table(&ssdt_table, addr);
 386         g_array_append_val(data->tables, ssdt_table);
 387     }
 388 }
 389
 390 static void dump_aml_files(test_data *data, bool rebuild)
 391 {
 392     AcpiSdtTable *sdt;
 393     GError *error = NULL;
 394     gchar *aml_file = NULL;
 395     gint fd;
 396     ssize_t ret;
 397     int i;
 398
 399     for (i = 0; i < data->tables->len; ++i) {
 400         const char *ext = data->variant ? data->variant : "";
 401         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 402         g_assert(sdt->aml);
 403
 404         if (rebuild) {
 405             uint32_t signature = cpu_to_le32(sdt->header.signature);
 406             aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
 407                                        (gchar *)&signature, ext);
 408             fd = g_open(aml_file, O_WRONLY|O_TRUNC|O_CREAT,
 409                         S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH);
 410         } else {
 411             fd = g_file_open_tmp("aml-XXXXXX", &sdt->aml_file, &error);
 412             g_assert_no_error(error);
 413         }
 414         g_assert(fd >= 0);
 415
 416         ret = qemu_write_full(fd, sdt, sizeof(AcpiTableHeader));
 417         g_assert(ret == sizeof(AcpiTableHeader));
 418         ret = qemu_write_full(fd, sdt->aml, sdt->aml_len);
 419         g_assert(ret == sdt->aml_len);
 420
 421         close(fd);
 422
 423         if (aml_file) {
 424             g_free(aml_file);
 425         }
 426     }
 427 }
 428
 429 static bool compare_signature(AcpiSdtTable *sdt, const char *signature)
 430 {
 431    return !memcmp(&sdt->header.signature, signature, 4);
 432 }
 433
 434 static bool load_asl(GArray *sdts, AcpiSdtTable *sdt)
 435 {
 436     AcpiSdtTable *temp;
 437     GError *error = NULL;
 438     GString *command_line = g_string_new(iasl);
 439     gint fd;
 440     gchar *out, *out_err;
 441     gboolean ret;
 442     int i;
 443
 444     fd = g_file_open_tmp("asl-XXXXXX.dsl", &sdt->asl_file, &error);
 445     g_assert_no_error(error);
 446     close(fd);
 447
 448     /* build command line */
 449     g_string_append_printf(command_line, " -p %s ", sdt->asl_file);
 450     if (compare_signature(sdt, "DSDT") ||
 451         compare_signature(sdt, "SSDT")) {
 452         for (i = 0; i < sdts->len; ++i) {
 453             temp = &g_array_index(sdts, AcpiSdtTable, i);
 454             if (compare_signature(temp, "DSDT") ||
 455                 compare_signature(temp, "SSDT")) {
 456                 g_string_append_printf(command_line, "-e %s ", temp->aml_file);
 457             }
 458         }
 459     }
 460     g_string_append_printf(command_line, "-d %s", sdt->aml_file);
 461
 462     /* pass 'out' and 'out_err' in order to be redirected */
 463     ret = g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
 464     g_assert_no_error(error);
 465     if (ret) {
 466         ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
 467                                   &sdt->asl_len, &error);
 468         g_assert(ret);
 469         g_assert_no_error(error);
 470         ret = (sdt->asl_len > 0);
 471     }
 472
 473     g_free(out);
 474     g_free(out_err);
 475     g_string_free(command_line, true);
 476
 477     return !ret;
 478 }
 479
 480 #define COMMENT_END "*/"
 481 #define DEF_BLOCK "DefinitionBlock ("
 482 #define BLOCK_NAME_END ".aml"
 483
 484 static GString *normalize_asl(gchar *asl_code)
 485 {
 486     GString *asl = g_string_new(asl_code);
 487     gchar *comment, *block_name;
 488
 489     /* strip comments (different generation days) */
 490     comment = g_strstr_len(asl->str, asl->len, COMMENT_END);
 491     if (comment) {
 492         comment += strlen(COMMENT_END);
 493         while (*comment == '\n') {
 494             comment++;
 495         }
 496         asl = g_string_erase(asl, 0, comment - asl->str);
 497     }
 498
 499     /* strip def block name (it has file path in it) */
 500     if (g_str_has_prefix(asl->str, DEF_BLOCK)) {
 501         block_name = g_strstr_len(asl->str, asl->len, BLOCK_NAME_END);
 502         g_assert(block_name);
 503         asl = g_string_erase(asl, 0,
 504                              block_name + sizeof(BLOCK_NAME_END) - asl->str);
 505     }
 506
 507     return asl;
 508 }
 509
 510 static GArray *load_expected_aml(test_data *data)
 511 {
 512     int i;
 513     AcpiSdtTable *sdt;
 514     gchar *aml_file = NULL;
 515     GError *error = NULL;
 516     gboolean ret;
 517
 518     GArray *exp_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
 519     for (i = 0; i < data->tables->len; ++i) {
 520         AcpiSdtTable exp_sdt;
 521         uint32_t signature;
 522         const char *ext = data->variant ? data->variant : "";
 523
 524         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 525
 526         memset(&exp_sdt, 0, sizeof(exp_sdt));
 527         exp_sdt.header.signature = sdt->header.signature;
 528
 529         signature = cpu_to_le32(sdt->header.signature);
 530
 531 try_again:
 532         aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
 533                                    (gchar *)&signature, ext);
 534         if (data->variant && !g_file_test(aml_file, G_FILE_TEST_EXISTS)) {
 535             g_free(aml_file);
 536             ext = "";
 537             goto try_again;
 538         }
 539         exp_sdt.aml_file = aml_file;
 540         g_assert(g_file_test(aml_file, G_FILE_TEST_EXISTS));
 541         ret = g_file_get_contents(aml_file, &exp_sdt.aml,
 542                                   &exp_sdt.aml_len, &error);
 543         g_assert(ret);
 544         g_assert_no_error(error);
 545         g_assert(exp_sdt.aml);
 546         g_assert(exp_sdt.aml_len);
 547
 548         g_array_append_val(exp_tables, exp_sdt);
 549     }
 550
 551     return exp_tables;
 552 }
 553
 554 static void test_acpi_asl(test_data *data)
 555 {
 556     int i;
 557     AcpiSdtTable *sdt, *exp_sdt;
 558     test_data exp_data;
 559     gboolean exp_err, err;
 560
 561     memset(&exp_data, 0, sizeof(exp_data));
 562     exp_data.tables = load_expected_aml(data);
 563     dump_aml_files(data, false);
 564     for (i = 0; i < data->tables->len; ++i) {
 565         GString *asl, *exp_asl;
 566
 567         sdt = &g_array_index(data->tables, AcpiSdtTable, i);
 568         exp_sdt = &g_array_index(exp_data.tables, AcpiSdtTable, i);
 569
 570         err = load_asl(data->tables, sdt);
 571         asl = normalize_asl(sdt->asl);
 572
 573         exp_err = load_asl(exp_data.tables, exp_sdt);
 574         exp_asl = normalize_asl(exp_sdt->asl);
 575
 576         /* TODO: check for warnings */
 577         g_assert(!err || exp_err);
 578
 579         if (g_strcmp0(asl->str, exp_asl->str)) {
 580             if (exp_err) {
 581                 fprintf(stderr,
 582                         "Warning! iasl couldn't parse the expected aml\n");
 583             } else {
 584                 uint32_t signature = cpu_to_le32(exp_sdt->header.signature);
 585                 sdt->tmp_files_retain = true;
 586                 exp_sdt->tmp_files_retain = true;
 587                 fprintf(stderr,
 588                         "acpi-test: Warning! %.4s mismatch. "
 589                         "Actual [asl:%s, aml:%s], Expected [asl:%s, aml:%s].\n",
 590                         (gchar *)&signature,
 591                         sdt->asl_file, sdt->aml_file,
 592                         exp_sdt->asl_file, exp_sdt->aml_file);
 593           }
 594         }
 595         g_string_free(asl, true);
 596         g_string_free(exp_asl, true);
 597     }
 598
 599     free_test_data(&exp_data);
 600 }
 601
 602 static bool smbios_ep_table_ok(test_data *data)
 603 {
 604     struct smbios_entry_point *ep_table = &data->smbios_ep_table;
 605     uint32_t addr = data->smbios_ep_addr;
 606
 607     ACPI_READ_ARRAY(ep_table->anchor_string, addr);
 608     if (memcmp(ep_table->anchor_string, "_SM_", 4)) {
 609         return false;
 610     }
 611     ACPI_READ_FIELD(ep_table->checksum, addr);
 612     ACPI_READ_FIELD(ep_table->length, addr);
 613     ACPI_READ_FIELD(ep_table->smbios_major_version, addr);
 614     ACPI_READ_FIELD(ep_table->smbios_minor_version, addr);
 615     ACPI_READ_FIELD(ep_table->max_structure_size, addr);
 616     ACPI_READ_FIELD(ep_table->entry_point_revision, addr);
 617     ACPI_READ_ARRAY(ep_table->formatted_area, addr);
 618     ACPI_READ_ARRAY(ep_table->intermediate_anchor_string, addr);
 619     if (memcmp(ep_table->intermediate_anchor_string, "_DMI_", 5)) {
 620         return false;
 621     }
 622     ACPI_READ_FIELD(ep_table->intermediate_checksum, addr);
 623     ACPI_READ_FIELD(ep_table->structure_table_length, addr);
 624     if (ep_table->structure_table_length == 0) {
 625         return false;
 626     }
 627     ACPI_READ_FIELD(ep_table->structure_table_address, addr);
 628     ACPI_READ_FIELD(ep_table->number_of_structures, addr);
 629     if (ep_table->number_of_structures == 0) {
 630         return false;
 631     }
 632     ACPI_READ_FIELD(ep_table->smbios_bcd_revision, addr);
 633     if (acpi_checksum((uint8_t *)ep_table, sizeof *ep_table) ||
 634         acpi_checksum((uint8_t *)ep_table + 0x10, sizeof *ep_table - 0x10)) {
 635         return false;
 636     }
 637     return true;
 638 }
 639
 640 static void test_smbios_entry_point(test_data *data)
 641 {
 642     uint32_t off;
 643
 644     /* find smbios entry point structure */
 645     for (off = 0xf0000; off < 0x100000; off += 0x10) {
 646         uint8_t sig[] = "_SM_";
 647         int i;
 648
 649         for (i = 0; i < sizeof sig - 1; ++i) {
 650             sig[i] = readb(off + i);
 651         }
 652
 653         if (!memcmp(sig, "_SM_", sizeof sig)) {
 654             /* signature match, but is this a valid entry point? */
 655             data->smbios_ep_addr = off;
 656             if (smbios_ep_table_ok(data)) {
 657                 break;
 658             }
 659         }
 660     }
 661
 662     g_assert_cmphex(off, <, 0x100000);
 663 }
 664
 665 static inline bool smbios_single_instance(uint8_t type)
 666 {
 667     switch (type) {
 668     case 0:
 669     case 1:
 670     case 2:
 671     case 3:
 672     case 16:
 673     case 32:
 674     case 127:
 675         return true;
 676     default:
 677         return false;
 678     }
 679 }
 680
 681 static void test_smbios_structs(test_data *data)
 682 {
 683     DECLARE_BITMAP(struct_bitmap, SMBIOS_MAX_TYPE+1) = { 0 };
 684     struct smbios_entry_point *ep_table = &data->smbios_ep_table;
 685     uint32_t addr = ep_table->structure_table_address;
 686     int i, len, max_len = 0;
 687     uint8_t type, prv, crt;
 688     uint8_t required_struct_types[] = {0, 1, 3, 4, 16, 17, 19, 32, 127};
 689
 690     /* walk the smbios tables */
 691     for (i = 0; i < ep_table->number_of_structures; i++) {
 692
 693         /* grab type and formatted area length from struct header */
 694         type = readb(addr);
 695         g_assert_cmpuint(type, <=, SMBIOS_MAX_TYPE);
 696         len = readb(addr + 1);
 697
 698         /* single-instance structs must not have been encountered before */
 699         if (smbios_single_instance(type)) {
 700             g_assert(!test_bit(type, struct_bitmap));
 701         }
 702         set_bit(type, struct_bitmap);
 703
 704         /* seek to end of unformatted string area of this struct ("\0\0") */
 705         prv = crt = 1;
 706         while (prv || crt) {
 707             prv = crt;
 708             crt = readb(addr + len);
 709             len++;
 710         }
 711
 712         /* keep track of max. struct size */
 713         if (max_len < len) {
 714             max_len = len;
 715             g_assert_cmpuint(max_len, <=, ep_table->max_structure_size);
 716         }
 717
 718         /* start of next structure */
 719         addr += len;
 720     }
 721
 722     /* total table length and max struct size must match entry point values */
 723     g_assert_cmpuint(ep_table->structure_table_length, ==,
 724                      addr - ep_table->structure_table_address);
 725     g_assert_cmpuint(ep_table->max_structure_size, ==, max_len);
 726
 727     /* required struct types must all be present */
 728     for (i = 0; i < ARRAY_SIZE(required_struct_types); i++) {
 729         g_assert(test_bit(required_struct_types[i], struct_bitmap));
 730     }
 731 }
 732
 733 static void test_acpi_one(const char *params, test_data *data)
 734 {
 735     char *args;
 736     uint8_t signature_low;
 737     uint8_t signature_high;
 738     uint16_t signature;
 739     int i;
 740
 741     args = g_strdup_printf("-net none -display none %s "
 742                            "-drive id=hd0,if=none,file=%s,format=raw "
 743                            "-device ide-hd,drive=hd0 ",
 744                            params ? params : "", disk);
 745
 746     qtest_start(args);
 747
 748    /* Wait at most 1 minute */
 749 #define TEST_DELAY (1 * G_USEC_PER_SEC / 10)
 750 #define TEST_CYCLES MAX((60 * G_USEC_PER_SEC / TEST_DELAY), 1)
 751
 752     /* Poll until code has run and modified memory.  Once it has we know BIOS
 753      * initialization is done.  TODO: check that IP reached the halt
 754      * instruction.
 755      */
 756     for (i = 0; i < TEST_CYCLES; ++i) {
 757         signature_low = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET);
 758         signature_high = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET + 1);
 759         signature = (signature_high << 8) | signature_low;
 760         if (signature == SIGNATURE) {
 761             break;
 762         }
 763         g_usleep(TEST_DELAY);
 764     }
 765     g_assert_cmphex(signature, ==, SIGNATURE);
 766
 767     test_acpi_rsdp_address(data);
 768     test_acpi_rsdp_table(data);
 769     test_acpi_rsdt_table(data);
 770     test_acpi_fadt_table(data);
 771     test_acpi_facs_table(data);
 772     test_acpi_dsdt_table(data);
 773     test_acpi_tables(data);
 774
 775     if (iasl) {
 776         if (getenv(ACPI_REBUILD_EXPECTED_AML)) {
 777             dump_aml_files(data, true);
 778         } else {
 779             test_acpi_asl(data);
 780         }
 781     }
 782
 783     test_smbios_entry_point(data);
 784     test_smbios_structs(data);
 785
 786     qtest_quit(global_qtest);
 787     g_free(args);
 788 }
 789
 790 static void test_acpi_piix4_tcg(void)
 791 {
 792     test_data data;
 793
 794     /* Supplying -machine accel argument overrides the default (qtest).
 795      * This is to make guest actually run.
 796      */
 797     memset(&data, 0, sizeof(data));
 798     data.machine = MACHINE_PC;
 799     test_acpi_one("-machine accel=tcg", &data);
 800     free_test_data(&data);
 801 }
 802
 803 static void test_acpi_piix4_tcg_bridge(void)
 804 {
 805     test_data data;
 806
 807     memset(&data, 0, sizeof(data));
 808     data.machine = MACHINE_PC;
 809     data.variant = ".bridge";
 810     test_acpi_one("-machine accel=tcg -device pci-bridge,chassis_nr=1", &data);
 811     free_test_data(&data);
 812 }
 813
 814 static void test_acpi_q35_tcg(void)
 815 {
 816     test_data data;
 817
 818     memset(&data, 0, sizeof(data));
 819     data.machine = MACHINE_Q35;
 820     test_acpi_one("-machine q35,accel=tcg", &data);
 821     free_test_data(&data);
 822 }
 823
 824 static void test_acpi_q35_tcg_bridge(void)
 825 {
 826     test_data data;
 827
 828     memset(&data, 0, sizeof(data));
 829     data.machine = MACHINE_Q35;
 830     data.variant = ".bridge";
 831     test_acpi_one("-machine q35,accel=tcg -device pci-bridge,chassis_nr=1",
 832                   &data);
 833     free_test_data(&data);
 834 }
 835
 836 int main(int argc, char *argv[])
 837 {
 838     const char *arch = qtest_get_arch();
 839     FILE *f = fopen(disk, "w");
 840     int ret;
 841
 842     if (!f) {
 843         fprintf(stderr, "Couldn't open \"%s\": %s", disk, strerror(errno));
 844         return 1;
 845     }
 846     fwrite(boot_sector, 1, sizeof boot_sector, f);
 847     fclose(f);
 848
 849     g_test_init(&argc, &argv, NULL);
 850
 851     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 852         qtest_add_func("acpi/piix4/tcg", test_acpi_piix4_tcg);
 853         qtest_add_func("acpi/piix4/tcg/bridge", test_acpi_piix4_tcg_bridge);
 854         qtest_add_func("acpi/q35/tcg", test_acpi_q35_tcg);
 855         qtest_add_func("acpi/q35/tcg/bridge", test_acpi_q35_tcg_bridge);
 856     }
 857     ret = g_test_run();
 858     unlink(disk);
 859     return ret;
 860 }