410 lines
12 KiB
C
410 lines
12 KiB
C
/*
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* SMBIOS Support
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*
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* Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
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* Copyright (C) 2013 Red Hat, Inc.
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*
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* Authors:
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* Alex Williamson <alex.williamson@hp.com>
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* Markus Armbruster <armbru@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "qemu/config-file.h"
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#include "qemu/error-report.h"
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#include "sysemu/sysemu.h"
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#include "hw/i386/smbios.h"
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#include "hw/loader.h"
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/* legacy structures and constants for <= 2.0 machines */
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struct smbios_header {
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uint16_t length;
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uint8_t type;
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} QEMU_PACKED;
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struct smbios_field {
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struct smbios_header header;
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uint8_t type;
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uint16_t offset;
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uint8_t data[];
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} QEMU_PACKED;
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struct smbios_table {
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struct smbios_header header;
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uint8_t data[];
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} QEMU_PACKED;
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#define SMBIOS_FIELD_ENTRY 0
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#define SMBIOS_TABLE_ENTRY 1
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static uint8_t *smbios_entries;
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static size_t smbios_entries_len;
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/* end: legacy structures & constants for <= 2.0 machines */
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static int smbios_type4_count = 0;
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static bool smbios_immutable;
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static struct {
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bool seen;
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int headertype;
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Location loc;
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} first_opt[2];
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static struct {
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const char *vendor, *version, *date;
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bool have_major_minor;
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uint8_t major, minor;
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} type0;
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static struct {
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const char *manufacturer, *product, *version, *serial, *sku, *family;
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/* uuid is in qemu_uuid[] */
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} type1;
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static QemuOptsList qemu_smbios_opts = {
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.name = "smbios",
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.head = QTAILQ_HEAD_INITIALIZER(qemu_smbios_opts.head),
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.desc = {
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/*
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* no elements => accept any params
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* validation will happen later
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*/
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{ /* end of list */ }
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}
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};
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static const QemuOptDesc qemu_smbios_file_opts[] = {
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{
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.name = "file",
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.type = QEMU_OPT_STRING,
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.help = "binary file containing an SMBIOS element",
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},
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{ /* end of list */ }
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};
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static const QemuOptDesc qemu_smbios_type0_opts[] = {
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{
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.name = "type",
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.type = QEMU_OPT_NUMBER,
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.help = "SMBIOS element type",
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},{
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.name = "vendor",
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.type = QEMU_OPT_STRING,
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.help = "vendor name",
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},{
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.name = "version",
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.type = QEMU_OPT_STRING,
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.help = "version number",
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},{
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.name = "date",
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.type = QEMU_OPT_STRING,
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.help = "release date",
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},{
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.name = "release",
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.type = QEMU_OPT_STRING,
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.help = "revision number",
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},
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{ /* end of list */ }
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};
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static const QemuOptDesc qemu_smbios_type1_opts[] = {
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{
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.name = "type",
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.type = QEMU_OPT_NUMBER,
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.help = "SMBIOS element type",
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},{
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.name = "manufacturer",
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.type = QEMU_OPT_STRING,
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.help = "manufacturer name",
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},{
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.name = "product",
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.type = QEMU_OPT_STRING,
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.help = "product name",
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},{
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.name = "version",
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.type = QEMU_OPT_STRING,
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.help = "version number",
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},{
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.name = "serial",
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.type = QEMU_OPT_STRING,
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.help = "serial number",
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},{
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.name = "uuid",
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.type = QEMU_OPT_STRING,
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.help = "UUID",
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},{
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.name = "sku",
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.type = QEMU_OPT_STRING,
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.help = "SKU number",
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},{
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.name = "family",
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.type = QEMU_OPT_STRING,
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.help = "family name",
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},
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{ /* end of list */ }
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};
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static void smbios_register_config(void)
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{
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qemu_add_opts(&qemu_smbios_opts);
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}
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machine_init(smbios_register_config);
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static void smbios_validate_table(void)
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{
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if (smbios_type4_count && smbios_type4_count != smp_cpus) {
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error_report("Number of SMBIOS Type 4 tables must match cpu count");
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exit(1);
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}
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}
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/*
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* To avoid unresolvable overlaps in data, don't allow both
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* tables and fields for the same smbios type.
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*/
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static void smbios_check_collision(int type, int entry)
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{
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if (type < ARRAY_SIZE(first_opt)) {
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if (first_opt[type].seen) {
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if (first_opt[type].headertype != entry) {
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error_report("Can't mix file= and type= for same type");
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loc_push_restore(&first_opt[type].loc);
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error_report("This is the conflicting setting");
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loc_pop(&first_opt[type].loc);
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exit(1);
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}
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} else {
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first_opt[type].seen = true;
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first_opt[type].headertype = entry;
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loc_save(&first_opt[type].loc);
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}
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}
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}
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/* legacy setup functions for <= 2.0 machines */
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static void smbios_add_field(int type, int offset, const void *data, size_t len)
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{
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struct smbios_field *field;
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if (!smbios_entries) {
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smbios_entries_len = sizeof(uint16_t);
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smbios_entries = g_malloc0(smbios_entries_len);
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}
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smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
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sizeof(*field) + len);
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field = (struct smbios_field *)(smbios_entries + smbios_entries_len);
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field->header.type = SMBIOS_FIELD_ENTRY;
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field->header.length = cpu_to_le16(sizeof(*field) + len);
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field->type = type;
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field->offset = cpu_to_le16(offset);
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memcpy(field->data, data, len);
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smbios_entries_len += sizeof(*field) + len;
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(*(uint16_t *)smbios_entries) =
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cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
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}
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static void smbios_maybe_add_str(int type, int offset, const char *data)
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{
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if (data) {
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smbios_add_field(type, offset, data, strlen(data) + 1);
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}
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}
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static void smbios_build_type_0_fields(void)
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{
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smbios_maybe_add_str(0, offsetof(struct smbios_type_0, vendor_str),
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type0.vendor);
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smbios_maybe_add_str(0, offsetof(struct smbios_type_0, bios_version_str),
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type0.version);
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smbios_maybe_add_str(0, offsetof(struct smbios_type_0,
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bios_release_date_str),
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type0.date);
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if (type0.have_major_minor) {
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smbios_add_field(0, offsetof(struct smbios_type_0,
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system_bios_major_release),
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&type0.major, 1);
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smbios_add_field(0, offsetof(struct smbios_type_0,
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system_bios_minor_release),
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&type0.minor, 1);
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}
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}
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static void smbios_build_type_1_fields(void)
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{
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smbios_maybe_add_str(1, offsetof(struct smbios_type_1, manufacturer_str),
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type1.manufacturer);
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smbios_maybe_add_str(1, offsetof(struct smbios_type_1, product_name_str),
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type1.product);
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smbios_maybe_add_str(1, offsetof(struct smbios_type_1, version_str),
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type1.version);
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smbios_maybe_add_str(1, offsetof(struct smbios_type_1, serial_number_str),
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type1.serial);
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smbios_maybe_add_str(1, offsetof(struct smbios_type_1, sku_number_str),
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type1.sku);
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smbios_maybe_add_str(1, offsetof(struct smbios_type_1, family_str),
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type1.family);
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if (qemu_uuid_set) {
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smbios_add_field(1, offsetof(struct smbios_type_1, uuid),
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qemu_uuid, 16);
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}
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}
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void smbios_set_defaults(const char *manufacturer, const char *product,
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const char *version)
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{
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if (!type1.manufacturer) {
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type1.manufacturer = manufacturer;
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}
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if (!type1.product) {
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type1.product = product;
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}
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if (!type1.version) {
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type1.version = version;
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}
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}
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uint8_t *smbios_get_table_legacy(size_t *length)
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{
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if (!smbios_immutable) {
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smbios_build_type_0_fields();
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smbios_build_type_1_fields();
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smbios_validate_table();
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smbios_immutable = true;
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}
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*length = smbios_entries_len;
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return smbios_entries;
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}
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/* end: legacy setup functions for <= 2.0 machines */
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static void save_opt(const char **dest, QemuOpts *opts, const char *name)
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{
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const char *val = qemu_opt_get(opts, name);
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if (val) {
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*dest = val;
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}
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}
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void smbios_entry_add(QemuOpts *opts)
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{
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Error *local_err = NULL;
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const char *val;
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assert(!smbios_immutable);
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val = qemu_opt_get(opts, "file");
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if (val) {
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struct smbios_structure_header *header;
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struct smbios_table *table;
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int size;
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qemu_opts_validate(opts, qemu_smbios_file_opts, &local_err);
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if (local_err) {
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error_report("%s", error_get_pretty(local_err));
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exit(1);
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}
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size = get_image_size(val);
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if (size == -1 || size < sizeof(struct smbios_structure_header)) {
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error_report("Cannot read SMBIOS file %s", val);
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exit(1);
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}
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if (!smbios_entries) {
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smbios_entries_len = sizeof(uint16_t);
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smbios_entries = g_malloc0(smbios_entries_len);
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}
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smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
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sizeof(*table) + size);
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table = (struct smbios_table *)(smbios_entries + smbios_entries_len);
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table->header.type = SMBIOS_TABLE_ENTRY;
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table->header.length = cpu_to_le16(sizeof(*table) + size);
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if (load_image(val, table->data) != size) {
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error_report("Failed to load SMBIOS file %s", val);
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exit(1);
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}
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header = (struct smbios_structure_header *)(table->data);
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smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY);
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if (header->type == 4) {
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smbios_type4_count++;
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}
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smbios_entries_len += sizeof(*table) + size;
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(*(uint16_t *)smbios_entries) =
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cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
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return;
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}
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val = qemu_opt_get(opts, "type");
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if (val) {
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unsigned long type = strtoul(val, NULL, 0);
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smbios_check_collision(type, SMBIOS_FIELD_ENTRY);
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switch (type) {
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case 0:
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qemu_opts_validate(opts, qemu_smbios_type0_opts, &local_err);
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if (local_err) {
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error_report("%s", error_get_pretty(local_err));
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exit(1);
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}
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save_opt(&type0.vendor, opts, "vendor");
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save_opt(&type0.version, opts, "version");
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save_opt(&type0.date, opts, "date");
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val = qemu_opt_get(opts, "release");
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if (val) {
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if (sscanf(val, "%hhu.%hhu", &type0.major, &type0.minor) != 2) {
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error_report("Invalid release");
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exit(1);
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}
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type0.have_major_minor = true;
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}
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return;
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case 1:
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qemu_opts_validate(opts, qemu_smbios_type1_opts, &local_err);
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if (local_err) {
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error_report("%s", error_get_pretty(local_err));
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exit(1);
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}
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save_opt(&type1.manufacturer, opts, "manufacturer");
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save_opt(&type1.product, opts, "product");
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save_opt(&type1.version, opts, "version");
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save_opt(&type1.serial, opts, "serial");
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save_opt(&type1.sku, opts, "sku");
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save_opt(&type1.family, opts, "family");
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val = qemu_opt_get(opts, "uuid");
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if (val) {
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if (qemu_uuid_parse(val, qemu_uuid) != 0) {
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error_report("Invalid UUID");
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exit(1);
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}
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qemu_uuid_set = true;
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}
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return;
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default:
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error_report("Don't know how to build fields for SMBIOS type %ld",
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type);
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exit(1);
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}
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}
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error_report("Must specify type= or file=");
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exit(1);
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}
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