/* * SMBIOS Support * * Copyright (C) 2009 Hewlett-Packard Development Company, L.P. * Copyright (C) 2013 Red Hat, Inc. * * Authors: * Alex Williamson * Markus Armbruster * * This work is licensed under the terms of the GNU GPL, version 2. See * the COPYING file in the top-level directory. * * Contributions after 2012-01-13 are licensed under the terms of the * GNU GPL, version 2 or (at your option) any later version. */ #include "qemu/config-file.h" #include "qemu/error-report.h" #include "sysemu/sysemu.h" #include "hw/i386/smbios.h" #include "hw/loader.h" /* * Structures shared with the BIOS */ struct smbios_header { uint16_t length; uint8_t type; } QEMU_PACKED; struct smbios_field { struct smbios_header header; uint8_t type; uint16_t offset; uint8_t data[]; } QEMU_PACKED; struct smbios_table { struct smbios_header header; uint8_t data[]; } QEMU_PACKED; #define SMBIOS_FIELD_ENTRY 0 #define SMBIOS_TABLE_ENTRY 1 static uint8_t *smbios_entries; static size_t smbios_entries_len; static int smbios_type4_count = 0; static struct { bool seen; int headertype; Location loc; } first_opt[2]; static QemuOptsList qemu_smbios_opts = { .name = "smbios", .head = QTAILQ_HEAD_INITIALIZER(qemu_smbios_opts.head), .desc = { /* * no elements => accept any params * validation will happen later */ { /* end of list */ } } }; static const QemuOptDesc qemu_smbios_file_opts[] = { { .name = "file", .type = QEMU_OPT_STRING, .help = "binary file containing an SMBIOS element", }, { /* end of list */ } }; static const QemuOptDesc qemu_smbios_type0_opts[] = { { .name = "type", .type = QEMU_OPT_NUMBER, .help = "SMBIOS element type", },{ .name = "vendor", .type = QEMU_OPT_STRING, .help = "vendor name", },{ .name = "version", .type = QEMU_OPT_STRING, .help = "version number", },{ .name = "date", .type = QEMU_OPT_STRING, .help = "release date", },{ .name = "release", .type = QEMU_OPT_STRING, .help = "revision number", }, { /* end of list */ } }; static const QemuOptDesc qemu_smbios_type1_opts[] = { { .name = "type", .type = QEMU_OPT_NUMBER, .help = "SMBIOS element type", },{ .name = "manufacturer", .type = QEMU_OPT_STRING, .help = "manufacturer name", },{ .name = "product", .type = QEMU_OPT_STRING, .help = "product name", },{ .name = "version", .type = QEMU_OPT_STRING, .help = "version number", },{ .name = "serial", .type = QEMU_OPT_STRING, .help = "serial number", },{ .name = "uuid", .type = QEMU_OPT_STRING, .help = "UUID", },{ .name = "sku", .type = QEMU_OPT_STRING, .help = "SKU number", },{ .name = "family", .type = QEMU_OPT_STRING, .help = "family name", }, { /* end of list */ } }; static void smbios_register_config(void) { qemu_add_opts(&qemu_smbios_opts); } machine_init(smbios_register_config); static void smbios_validate_table(void) { if (smbios_type4_count && smbios_type4_count != smp_cpus) { error_report("Number of SMBIOS Type 4 tables must match cpu count"); exit(1); } } uint8_t *smbios_get_table(size_t *length) { smbios_validate_table(); *length = smbios_entries_len; return smbios_entries; } /* * To avoid unresolvable overlaps in data, don't allow both * tables and fields for the same smbios type. */ static void smbios_check_collision(int type, int entry) { if (type < ARRAY_SIZE(first_opt)) { if (first_opt[type].seen) { if (first_opt[type].headertype != entry) { error_report("Can't mix file= and type= for same type"); loc_push_restore(&first_opt[type].loc); error_report("This is the conflicting setting"); loc_pop(&first_opt[type].loc); exit(1); } } else { first_opt[type].seen = true; first_opt[type].headertype = entry; loc_save(&first_opt[type].loc); } } } void smbios_add_field(int type, int offset, const void *data, size_t len) { struct smbios_field *field; smbios_check_collision(type, SMBIOS_FIELD_ENTRY); if (!smbios_entries) { smbios_entries_len = sizeof(uint16_t); smbios_entries = g_malloc0(smbios_entries_len); } smbios_entries = g_realloc(smbios_entries, smbios_entries_len + sizeof(*field) + len); field = (struct smbios_field *)(smbios_entries + smbios_entries_len); field->header.type = SMBIOS_FIELD_ENTRY; field->header.length = cpu_to_le16(sizeof(*field) + len); field->type = type; field->offset = cpu_to_le16(offset); memcpy(field->data, data, len); smbios_entries_len += sizeof(*field) + len; (*(uint16_t *)smbios_entries) = cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1); } static void smbios_build_type_0_fields(QemuOpts *opts) { const char *val; unsigned char major, minor; val = qemu_opt_get(opts, "vendor"); if (val) { smbios_add_field(0, offsetof(struct smbios_type_0, vendor_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "version"); if (val) { smbios_add_field(0, offsetof(struct smbios_type_0, bios_version_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "date"); if (val) { smbios_add_field(0, offsetof(struct smbios_type_0, bios_release_date_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "release"); if (val) { if (sscanf(val, "%hhu.%hhu", &major, &minor) != 2) { error_report("Invalid release"); exit(1); } smbios_add_field(0, offsetof(struct smbios_type_0, system_bios_major_release), &major, 1); smbios_add_field(0, offsetof(struct smbios_type_0, system_bios_minor_release), &minor, 1); } } static void smbios_build_type_1_fields(QemuOpts *opts) { const char *val; val = qemu_opt_get(opts, "manufacturer"); if (val) { smbios_add_field(1, offsetof(struct smbios_type_1, manufacturer_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "product"); if (val) { smbios_add_field(1, offsetof(struct smbios_type_1, product_name_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "version"); if (val) { smbios_add_field(1, offsetof(struct smbios_type_1, version_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "serial"); if (val) { smbios_add_field(1, offsetof(struct smbios_type_1, serial_number_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "uuid"); if (val) { if (qemu_uuid_parse(val, qemu_uuid) != 0) { error_report("Invalid UUID"); exit(1); } } val = qemu_opt_get(opts, "sku"); if (val) { smbios_add_field(1, offsetof(struct smbios_type_1, sku_number_str), val, strlen(val) + 1); } val = qemu_opt_get(opts, "family"); if (val) { smbios_add_field(1, offsetof(struct smbios_type_1, family_str), val, strlen(val) + 1); } } void smbios_entry_add(QemuOpts *opts) { Error *local_err = NULL; const char *val; val = qemu_opt_get(opts, "file"); if (val) { struct smbios_structure_header *header; struct smbios_table *table; int size; qemu_opts_validate(opts, qemu_smbios_file_opts, &local_err); if (local_err) { error_report("%s", error_get_pretty(local_err)); exit(1); } size = get_image_size(val); if (size == -1 || size < sizeof(struct smbios_structure_header)) { error_report("Cannot read SMBIOS file %s", val); exit(1); } if (!smbios_entries) { smbios_entries_len = sizeof(uint16_t); smbios_entries = g_malloc0(smbios_entries_len); } smbios_entries = g_realloc(smbios_entries, smbios_entries_len + sizeof(*table) + size); table = (struct smbios_table *)(smbios_entries + smbios_entries_len); table->header.type = SMBIOS_TABLE_ENTRY; table->header.length = cpu_to_le16(sizeof(*table) + size); if (load_image(val, table->data) != size) { error_report("Failed to load SMBIOS file %s", val); exit(1); } header = (struct smbios_structure_header *)(table->data); smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY); if (header->type == 4) { smbios_type4_count++; } smbios_entries_len += sizeof(*table) + size; (*(uint16_t *)smbios_entries) = cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1); return; } val = qemu_opt_get(opts, "type"); if (val) { unsigned long type = strtoul(val, NULL, 0); switch (type) { case 0: qemu_opts_validate(opts, qemu_smbios_type0_opts, &local_err); if (local_err) { error_report("%s", error_get_pretty(local_err)); exit(1); } smbios_build_type_0_fields(opts); return; case 1: qemu_opts_validate(opts, qemu_smbios_type1_opts, &local_err); if (local_err) { error_report("%s", error_get_pretty(local_err)); exit(1); } smbios_build_type_1_fields(opts); return; default: error_report("Don't know how to build fields for SMBIOS type %ld", type); exit(1); } } error_report("Must specify type= or file="); exit(1); }