On Mon, 4 Mar 2024 16:25:03 +0530
Ani Sinha <anisi...@redhat.com> wrote:
> > On 27-Feb-2024, at 21:17, Igor Mammedov <imamm...@redhat.com> wrote:
> >
> > basically moving code around without functional change.
> > And exposing some symbols so that they could be shared
> > between smbbios.c and new smbios_legacy.c
> >
> > plus some meson magic to build smbios_legacy.c only
> > for 'pc' machine and otherwise replace it with stub
> > if not selected.
> >
> > Signed-off-by: Igor Mammedov <imamm...@redhat.com>
> > ---
> > include/hw/firmware/smbios.h | 22 +++
> > hw/i386/Kconfig | 1 +
> > hw/smbios/Kconfig | 2 +
> > hw/smbios/meson.build | 4 +
> > hw/smbios/smbios.c | 251 ++++++---------------------------
> > hw/smbios/smbios_legacy.c | 179 +++++++++++++++++++++++
> > hw/smbios/smbios_legacy_stub.c | 16 +++
> > 7 files changed, 270 insertions(+), 205 deletions(-)
> > create mode 100644 hw/smbios/smbios_legacy.c
> > create mode 100644 hw/smbios/smbios_legacy_stub.c
> >
> > diff --git a/include/hw/firmware/smbios.h b/include/hw/firmware/smbios.h
> > index 1fbff3c55f..a6d8fd6591 100644
> > --- a/include/hw/firmware/smbios.h
> > +++ b/include/hw/firmware/smbios.h
> > @@ -2,6 +2,7 @@
> > #define QEMU_SMBIOS_H
> >
> > #include "qapi/qapi-types-machine.h"
> > +#include "qemu/bitmap.h"
> >
> > /*
> > * SMBIOS Support
> > @@ -16,8 +17,27 @@
> > *
> > */
> >
> > +extern uint8_t *usr_blobs;
> > +extern GArray *usr_blobs_sizes;
> > +
> > +typedef struct {
> > + const char *vendor, *version, *date;
> > + bool have_major_minor, uefi;
> > + uint8_t major, minor;
> > +} smbios_type0_t;
> > +extern smbios_type0_t smbios_type0;
> > +
> > +typedef struct {
> > + const char *manufacturer, *product, *version, *serial, *sku, *family;
> > + /* uuid is in qemu_uuid */
> > +} smbios_type1_t;
> > +extern smbios_type1_t smbios_type1;
> > +
> >
> > #define SMBIOS_MAX_TYPE 127
> > +extern DECLARE_BITMAP(smbios_have_binfile_bitmap, SMBIOS_MAX_TYPE + 1);
> > +extern DECLARE_BITMAP(smbios_have_fields_bitmap, SMBIOS_MAX_TYPE + 1);
> > +
> > #define offsetofend(TYPE, MEMBER) \
> > (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
> >
> > @@ -290,6 +310,8 @@ struct smbios_type_127 {
> > struct smbios_structure_header header;
> > } QEMU_PACKED;
> >
> > +void smbios_validate_table(void);
> > +void smbios_add_usr_blob_size(size_t size);
> > void smbios_entry_add(QemuOpts *opts, Error **errp);
> > void smbios_set_cpuid(uint32_t version, uint32_t features);
> > void smbios_set_defaults(const char *manufacturer, const char *product,
> > diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
> > index a1846be6f7..a6ee052f9a 100644
> > --- a/hw/i386/Kconfig
> > +++ b/hw/i386/Kconfig
> > @@ -76,6 +76,7 @@ config I440FX
> > select PIIX
> > select DIMM
> > select SMBIOS
> > + select SMBIOS_LEGACY
> > select FW_CFG_DMA
> >
> > config ISAPC
> > diff --git a/hw/smbios/Kconfig b/hw/smbios/Kconfig
> > index 553adf4bfc..8d989a2f1b 100644
> > --- a/hw/smbios/Kconfig
> > +++ b/hw/smbios/Kconfig
> > @@ -1,2 +1,4 @@
> > config SMBIOS
> > bool
> > +config SMBIOS_LEGACY
> > + bool
> > diff --git a/hw/smbios/meson.build b/hw/smbios/meson.build
> > index 7046967462..a59039f669 100644
> > --- a/hw/smbios/meson.build
> > +++ b/hw/smbios/meson.build
> > @@ -4,5 +4,9 @@ smbios_ss.add(when: 'CONFIG_IPMI',
> > if_true: files('smbios_type_38.c'),
> > if_false: files('smbios_type_38-stub.c'))
> >
> > +smbios_ss.add(when: 'CONFIG_SMBIOS_LEGACY',
> > + if_true: files('smbios_legacy.c'),
> > + if_false: files('smbios_legacy_stub.c'))
> > +
> > system_ss.add_all(when: 'CONFIG_SMBIOS', if_true: smbios_ss)
> > system_ss.add(when: 'CONFIG_SMBIOS', if_false: files('smbios-stub.c'))
> > diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c
> > index 97cf762228..fb1f05fcde 100644
> > --- a/hw/smbios/smbios.c
> > +++ b/hw/smbios/smbios.c
> > @@ -31,38 +31,12 @@
> > #include "hw/pci/pci_device.h"
> > #include "smbios_build.h"
> >
> > -/* legacy structures and constants for <= 2.0 machines */
> > -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 bool smbios_uuid_encoded = true;
> > -/* end: legacy structures & constants for <= 2.0 machines */
> > -
> > /*
> > * SMBIOS tables provided by user with '-smbios file=<foo>' option
> > */
> > uint8_t *usr_blobs;
> > size_t usr_blobs_len;
> > -static GArray *usr_blobs_sizes;
> > static unsigned usr_table_max;
> > static unsigned usr_table_cnt;
> >
> > @@ -78,19 +52,11 @@ static int smbios_type4_count = 0;
> > static bool smbios_have_defaults;
> > static uint32_t smbios_cpuid_version, smbios_cpuid_features;
> >
> > -static DECLARE_BITMAP(have_binfile_bitmap, SMBIOS_MAX_TYPE+1);
> > -static DECLARE_BITMAP(have_fields_bitmap, SMBIOS_MAX_TYPE+1);
> > -
> > -static struct {
> > - const char *vendor, *version, *date;
> > - bool have_major_minor, uefi;
> > - uint8_t major, minor;
> > -} type0;
> > +DECLARE_BITMAP(smbios_have_binfile_bitmap, SMBIOS_MAX_TYPE + 1);
> > +DECLARE_BITMAP(smbios_have_fields_bitmap, SMBIOS_MAX_TYPE + 1);
> >
> > -static struct {
> > - const char *manufacturer, *product, *version, *serial, *sku, *family;
> > - /* uuid is in qemu_uuid */
> > -} type1;
> > +smbios_type0_t smbios_type0;
> > +smbios_type1_t smbios_type1;
> >
> > static struct {
> > const char *manufacturer, *product, *version, *serial, *asset,
> > *location;
> > @@ -491,7 +457,7 @@ static void smbios_check_type4_count(uint32_t
> > expected_t4_count)
> > }
> > }
> >
> > -static void smbios_validate_table(void)
> > +void smbios_validate_table(void)
> > {
> > if (smbios_ep_type == SMBIOS_ENTRY_POINT_TYPE_32 &&
> > smbios_tables_len > SMBIOS_21_MAX_TABLES_LEN) {
> > @@ -501,140 +467,12 @@ static void smbios_validate_table(void)
> > }
> > }
> >
> > -
> > -/* legacy setup functions for <= 2.0 machines */
> > -static void smbios_add_field(int type, int offset, const void *data,
> > size_t len)
> > -{
> > - struct smbios_field *field;
> > -
> > - 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_maybe_add_str(int type, int offset, const char *data)
> > -{
> > - if (data) {
> > - smbios_add_field(type, offset, data, strlen(data) + 1);
> > - }
> > -}
> > -
> > -static void smbios_build_type_0_fields(void)
> > -{
> > - smbios_maybe_add_str(0, offsetof(struct smbios_type_0, vendor_str),
> > - type0.vendor);
> > - smbios_maybe_add_str(0, offsetof(struct smbios_type_0,
> > bios_version_str),
> > - type0.version);
> > - smbios_maybe_add_str(0, offsetof(struct smbios_type_0,
> > - bios_release_date_str),
> > - type0.date);
> > - if (type0.have_major_minor) {
> > - smbios_add_field(0, offsetof(struct smbios_type_0,
> > - system_bios_major_release),
> > - &type0.major, 1);
> > - smbios_add_field(0, offsetof(struct smbios_type_0,
> > - system_bios_minor_release),
> > - &type0.minor, 1);
> > - }
> > -}
> > -
> > -static void smbios_build_type_1_fields(void)
> > -{
> > - smbios_maybe_add_str(1, offsetof(struct smbios_type_1,
> > manufacturer_str),
> > - type1.manufacturer);
> > - smbios_maybe_add_str(1, offsetof(struct smbios_type_1,
> > product_name_str),
> > - type1.product);
> > - smbios_maybe_add_str(1, offsetof(struct smbios_type_1, version_str),
> > - type1.version);
> > - smbios_maybe_add_str(1, offsetof(struct smbios_type_1,
> > serial_number_str),
> > - type1.serial);
> > - smbios_maybe_add_str(1, offsetof(struct smbios_type_1, sku_number_str),
> > - type1.sku);
> > - smbios_maybe_add_str(1, offsetof(struct smbios_type_1, family_str),
> > - type1.family);
> > - if (qemu_uuid_set) {
> > - /* We don't encode the UUID in the "wire format" here because this
> > - * function is for legacy mode and needs to keep the guest ABI, and
> > - * because we don't know what's the SMBIOS version advertised by
> > the
> > - * BIOS.
> > - */
> > - smbios_add_field(1, offsetof(struct smbios_type_1, uuid),
> > - &qemu_uuid, 16);
> > - }
> > -}
> > -
> > -uint8_t *smbios_get_table_legacy(size_t *length)
> > -{
> > - int i;
> > - size_t usr_offset;
> > -
> > - /* also complain if fields were given for types > 1 */
> > - if (find_next_bit(have_fields_bitmap,
> > - SMBIOS_MAX_TYPE + 1, 2) < SMBIOS_MAX_TYPE + 1) {
> > - error_report("can't process fields for smbios "
> > - "types > 1 on machine versions < 2.1!");
> > - exit(1);
> > - }
> > -
> > - if (test_bit(4, have_binfile_bitmap)) {
> > - error_report("can't process table for smbios "
> > - "type 4 on machine versions < 2.1!");
> > - exit(1);
> > - }
> > -
> > - g_free(smbios_entries);
> > - smbios_entries_len = sizeof(uint16_t);
> > - smbios_entries = g_malloc0(smbios_entries_len);
> > -
> > - for (i = 0, usr_offset = 0; usr_blobs_sizes && i <
> > usr_blobs_sizes->len;
> > - i++)
> > - {
> > - struct smbios_table *table;
> > - struct smbios_structure_header *header;
> > - size_t size = g_array_index(usr_blobs_sizes, size_t, i);
> > -
> > - header = (struct smbios_structure_header *)(usr_blobs +
> > usr_offset);
> > - smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
> > - size + sizeof(*table));
> > - table = (struct smbios_table *)(smbios_entries +
> > smbios_entries_len);
> > - table->header.type = SMBIOS_TABLE_ENTRY;
> > - table->header.length = cpu_to_le16(sizeof(*table) + size);
> > - memcpy(table->data, header, size);
> > - smbios_entries_len += sizeof(*table) + size;
> > - (*(uint16_t *)smbios_entries) =
> > - cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
> > - usr_offset += size;
> > - }
> > -
> > - smbios_build_type_0_fields();
> > - smbios_build_type_1_fields();
> > - smbios_validate_table();
> > - *length = smbios_entries_len;
> > - return smbios_entries;
> > -}
> > -/* end: legacy setup functions for <= 2.0 machines */
> > -
> > -
> > bool smbios_skip_table(uint8_t type, bool required_table)
> > {
> > - if (test_bit(type, have_binfile_bitmap)) {
> > + if (test_bit(type, smbios_have_binfile_bitmap)) {
> > return true; /* user provided their own binary blob(s) */
> > }
> > - if (test_bit(type, have_fields_bitmap)) {
> > + if (test_bit(type, smbios_have_fields_bitmap)) {
> > return false; /* user provided fields via command line */
> > }
> > if (smbios_have_defaults && required_table) {
> > @@ -661,25 +499,25 @@ static void smbios_build_type_0_table(void)
> > {
> > SMBIOS_BUILD_TABLE_PRE(0, T0_BASE, false); /* optional, leave up to
> > BIOS */
> >
> > - SMBIOS_TABLE_SET_STR(0, vendor_str, type0.vendor);
> > - SMBIOS_TABLE_SET_STR(0, bios_version_str, type0.version);
> > + SMBIOS_TABLE_SET_STR(0, vendor_str, smbios_type0.vendor);
> > + SMBIOS_TABLE_SET_STR(0, bios_version_str, smbios_type0.version);
> >
> > t->bios_starting_address_segment = cpu_to_le16(0xE800); /* from SeaBIOS
> > */
> >
> > - SMBIOS_TABLE_SET_STR(0, bios_release_date_str, type0.date);
> > + SMBIOS_TABLE_SET_STR(0, bios_release_date_str, smbios_type0.date);
> >
> > t->bios_rom_size = 0; /* hardcoded in SeaBIOS with FIXME comment */
> >
> > t->bios_characteristics = cpu_to_le64(0x08); /* Not supported */
> > t->bios_characteristics_extension_bytes[0] = 0;
> > t->bios_characteristics_extension_bytes[1] = 0x14; /* TCD/SVVP | VM */
> > - if (type0.uefi) {
> > + if (smbios_type0.uefi) {
> > t->bios_characteristics_extension_bytes[1] |= 0x08; /* |= UEFI */
> > }
> >
> > - if (type0.have_major_minor) {
> > - t->system_bios_major_release = type0.major;
> > - t->system_bios_minor_release = type0.minor;
> > + if (smbios_type0.have_major_minor) {
> > + t->system_bios_major_release = smbios_type0.major;
> > + t->system_bios_minor_release = smbios_type0.minor;
> > } else {
> > t->system_bios_major_release = 0;
> > t->system_bios_minor_release = 0;
> > @@ -709,18 +547,18 @@ static void smbios_build_type_1_table(void)
> > {
> > SMBIOS_BUILD_TABLE_PRE(1, T1_BASE, true); /* required */
> >
> > - SMBIOS_TABLE_SET_STR(1, manufacturer_str, type1.manufacturer);
> > - SMBIOS_TABLE_SET_STR(1, product_name_str, type1.product);
> > - SMBIOS_TABLE_SET_STR(1, version_str, type1.version);
> > - SMBIOS_TABLE_SET_STR(1, serial_number_str, type1.serial);
> > + SMBIOS_TABLE_SET_STR(1, manufacturer_str, smbios_type1.manufacturer);
> > + SMBIOS_TABLE_SET_STR(1, product_name_str, smbios_type1.product);
> > + SMBIOS_TABLE_SET_STR(1, version_str, smbios_type1.version);
> > + SMBIOS_TABLE_SET_STR(1, serial_number_str, smbios_type1.serial);
> > if (qemu_uuid_set) {
> > smbios_encode_uuid(&t->uuid, &qemu_uuid);
> > } else {
> > memset(&t->uuid, 0, 16);
> > }
> > t->wake_up_type = 0x06; /* power switch */
> > - SMBIOS_TABLE_SET_STR(1, sku_number_str, type1.sku);
> > - SMBIOS_TABLE_SET_STR(1, family_str, type1.family);
> > + SMBIOS_TABLE_SET_STR(1, sku_number_str, smbios_type1.sku);
> > + SMBIOS_TABLE_SET_STR(1, family_str, smbios_type1.family);
> >
> > SMBIOS_BUILD_TABLE_POST;
> > }
> > @@ -1055,9 +893,9 @@ void smbios_set_defaults(const char *manufacturer,
> > const char *product,
> > smbios_uuid_encoded = uuid_encoded;
> > smbios_ep_type = ep_type;
> >
> > - SMBIOS_SET_DEFAULT(type1.manufacturer, manufacturer);
> > - SMBIOS_SET_DEFAULT(type1.product, product);
> > - SMBIOS_SET_DEFAULT(type1.version, version);
> > + SMBIOS_SET_DEFAULT(smbios_type1.manufacturer, manufacturer);
> > + SMBIOS_SET_DEFAULT(smbios_type1.product, product);
> > + SMBIOS_SET_DEFAULT(smbios_type1.version, version);
> > SMBIOS_SET_DEFAULT(type2.manufacturer, manufacturer);
> > SMBIOS_SET_DEFAULT(type2.product, product);
> > SMBIOS_SET_DEFAULT(type2.version, version);
> > @@ -1321,23 +1159,25 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
> > }
> >
> > if (header->type <= SMBIOS_MAX_TYPE) {
> > - if (test_bit(header->type, have_fields_bitmap)) {
> > + if (test_bit(header->type, smbios_have_fields_bitmap)) {
> > error_setg(errp,
> > "can't load type %d struct, fields already
> > specified!",
> > header->type);
> > return;
> > }
> > - set_bit(header->type, have_binfile_bitmap);
> > + set_bit(header->type, smbios_have_binfile_bitmap);
> > }
> >
> > if (header->type == 4) {
> > smbios_type4_count++;
> > }
> >
> > - if (!usr_blobs_sizes) {
> > - usr_blobs_sizes = g_array_new(false, false, sizeof(size_t));
> > - }
> > - g_array_append_val(usr_blobs_sizes, size);
> > + /*
> > + * preserve blob size for legacy mode so it could build its
> > + * blobs flavor from 'usr_blobs'
> > + */
> > + smbios_add_usr_blob_size(size);
> > +
>
> Could this have been made as a part of a separate patch? It is extremely hard
> to understand why you are doing this when it’s a part of a larger code
> refactoring/modularisation.
sure, will do on respin
>
>
> > usr_blobs_len += size;
> > if (size > usr_table_max) {
> > usr_table_max = size;
> > @@ -1356,41 +1196,42 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
> > return;
> > }
> >
> > - if (test_bit(type, have_binfile_bitmap)) {
> > + if (test_bit(type, smbios_have_binfile_bitmap)) {
> > error_setg(errp, "can't add fields, binary file already
> > loaded!");
> > return;
> > }
> > - set_bit(type, have_fields_bitmap);
> > + set_bit(type, smbios_have_fields_bitmap);
> >
> > switch (type) {
> > case 0:
> > if (!qemu_opts_validate(opts, qemu_smbios_type0_opts, errp)) {
> > return;
> > }
> > - save_opt(&type0.vendor, opts, "vendor");
> > - save_opt(&type0.version, opts, "version");
> > - save_opt(&type0.date, opts, "date");
> > - type0.uefi = qemu_opt_get_bool(opts, "uefi", false);
> > + save_opt(&smbios_type0.vendor, opts, "vendor");
> > + save_opt(&smbios_type0.version, opts, "version");
> > + save_opt(&smbios_type0.date, opts, "date");
> > + smbios_type0.uefi = qemu_opt_get_bool(opts, "uefi", false);
> >
> > val = qemu_opt_get(opts, "release");
> > if (val) {
> > - if (sscanf(val, "%hhu.%hhu", &type0.major, &type0.minor)
> > != 2) {
> > + if (sscanf(val, "%hhu.%hhu", &smbios_type0.major,
> > + &smbios_type0.minor) != 2) {
> > error_setg(errp, "Invalid release");
> > return;
> > }
> > - type0.have_major_minor = true;
> > + smbios_type0.have_major_minor = true;
> > }
> > return;
> > case 1:
> > if (!qemu_opts_validate(opts, qemu_smbios_type1_opts, errp)) {
> > return;
> > }
> > - save_opt(&type1.manufacturer, opts, "manufacturer");
> > - save_opt(&type1.product, opts, "product");
> > - save_opt(&type1.version, opts, "version");
> > - save_opt(&type1.serial, opts, "serial");
> > - save_opt(&type1.sku, opts, "sku");
> > - save_opt(&type1.family, opts, "family");
> > + save_opt(&smbios_type1.manufacturer, opts, "manufacturer");
> > + save_opt(&smbios_type1.product, opts, "product");
> > + save_opt(&smbios_type1.version, opts, "version");
> > + save_opt(&smbios_type1.serial, opts, "serial");
> > + save_opt(&smbios_type1.sku, opts, "sku");
> > + save_opt(&smbios_type1.family, opts, "family");
> >
> > val = qemu_opt_get(opts, "uuid");
> > if (val) {
> > diff --git a/hw/smbios/smbios_legacy.c b/hw/smbios/smbios_legacy.c
> > new file mode 100644
> > index 0000000000..21f143e738
> > --- /dev/null
> > +++ b/hw/smbios/smbios_legacy.c
> > @@ -0,0 +1,179 @@
> > +/*
> > + * SMBIOS legacy support
> > + *
> > + * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
> > + * Copyright (C) 2013 Red Hat, Inc.
> > + *
> > + * Authors:
> > + * Alex Williamson <alex.william...@hp.com>
> > + * Markus Armbruster <arm...@redhat.com>
> > + *
> > + * 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/osdep.h"
> > +#include "qemu/bswap.h"
> > +#include "hw/firmware/smbios.h"
> > +#include "sysemu/sysemu.h"
> > +#include "qemu/error-report.h"
> > +
> > +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;
> > +GArray *usr_blobs_sizes;
> > +
> > +void smbios_add_usr_blob_size(size_t size)
> > +{
> > + if (!usr_blobs_sizes) {
> > + usr_blobs_sizes = g_array_new(false, false, sizeof(size_t));
> > + }
> > + g_array_append_val(usr_blobs_sizes, size);
> > +}
> > +
> > +static void smbios_add_field(int type, int offset, const void *data,
> > size_t len)
> > +{
> > + struct smbios_field *field;
> > +
> > + 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_maybe_add_str(int type, int offset, const char *data)
> > +{
> > + if (data) {
> > + smbios_add_field(type, offset, data, strlen(data) + 1);
> > + }
> > +}
> > +
> > +static void smbios_build_type_0_fields(void)
> > +{
> > + smbios_maybe_add_str(0, offsetof(struct smbios_type_0, vendor_str),
> > + smbios_type0.vendor);
> > + smbios_maybe_add_str(0, offsetof(struct smbios_type_0,
> > bios_version_str),
> > + smbios_type0.version);
> > + smbios_maybe_add_str(0, offsetof(struct smbios_type_0,
> > + bios_release_date_str),
> > + smbios_type0.date);
> > + if (smbios_type0.have_major_minor) {
> > + smbios_add_field(0, offsetof(struct smbios_type_0,
> > + system_bios_major_release),
> > + &smbios_type0.major, 1);
> > + smbios_add_field(0, offsetof(struct smbios_type_0,
> > + system_bios_minor_release),
> > + &smbios_type0.minor, 1);
> > + }
> > +}
> > +
> > +static void smbios_build_type_1_fields(void)
> > +{
> > + smbios_maybe_add_str(1, offsetof(struct smbios_type_1,
> > manufacturer_str),
> > + smbios_type1.manufacturer);
> > + smbios_maybe_add_str(1, offsetof(struct smbios_type_1,
> > product_name_str),
> > + smbios_type1.product);
> > + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, version_str),
> > + smbios_type1.version);
> > + smbios_maybe_add_str(1, offsetof(struct smbios_type_1,
> > serial_number_str),
> > + smbios_type1.serial);
> > + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, sku_number_str),
> > + smbios_type1.sku);
> > + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, family_str),
> > + smbios_type1.family);
> > + if (qemu_uuid_set) {
> > + /*
> > + * We don't encode the UUID in the "wire format" here because this
> > + * function is for legacy mode and needs to keep the guest ABI, and
> > + * because we don't know what's the SMBIOS version advertised by
> > the
> > + * BIOS.
> > + */
> > + smbios_add_field(1, offsetof(struct smbios_type_1, uuid),
> > + &qemu_uuid, 16);
> > + }
> > +}
> > +
> > +uint8_t *smbios_get_table_legacy(size_t *length)
> > +{
> > + int i;
> > + size_t usr_offset;
> > +
> > + /* complain if fields were given for types > 1 */
> > + if (find_next_bit(smbios_have_fields_bitmap,
> > + SMBIOS_MAX_TYPE + 1, 2) < SMBIOS_MAX_TYPE + 1) {
> > + error_report("can't process fields for smbios "
> > + "types > 1 on machine versions < 2.1!");
> > + exit(1);
> > + }
> > +
> > + if (test_bit(4, smbios_have_binfile_bitmap)) {
> > + error_report("can't process table for smbios "
> > + "type 4 on machine versions < 2.1!");
> > + exit(1);
> > + }
> > +
> > + g_free(smbios_entries);
> > + smbios_entries_len = sizeof(uint16_t);
> > + smbios_entries = g_malloc0(smbios_entries_len);
> > +
> > + for (i = 0, usr_offset = 0; usr_blobs_sizes && i <
> > usr_blobs_sizes->len;
> > + i++)
> > + {
> > + struct smbios_table *table;
> > + struct smbios_structure_header *header;
> > + size_t size = g_array_index(usr_blobs_sizes, size_t, i);
> > +
> > + header = (struct smbios_structure_header *)(usr_blobs +
> > usr_offset);
> > + smbios_entries = g_realloc(smbios_entries, smbios_entries_len +
> > + size + sizeof(*table));
> > + table = (struct smbios_table *)(smbios_entries +
> > smbios_entries_len);
> > + table->header.type = SMBIOS_TABLE_ENTRY;
> > + table->header.length = cpu_to_le16(sizeof(*table) + size);
> > + memcpy(table->data, header, size);
> > + smbios_entries_len += sizeof(*table) + size;
> > + (*(uint16_t *)smbios_entries) =
> > + cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
> > + usr_offset += size;
> > + }
> > +
> > + smbios_build_type_0_fields();
> > + smbios_build_type_1_fields();
> > + smbios_validate_table();
> > + *length = smbios_entries_len;
> > + return smbios_entries;
> > +}
> > diff --git a/hw/smbios/smbios_legacy_stub.c b/hw/smbios/smbios_legacy_stub.c
> > new file mode 100644
> > index 0000000000..91e6c75029
> > --- /dev/null
> > +++ b/hw/smbios/smbios_legacy_stub.c
> > @@ -0,0 +1,16 @@
> > +/*
> > + * IPMI SMBIOS firmware handling
> > + *
> > + * Copyright (c) 2024 Igor Mammedov, Red Hat, Inc.
> > + *
> > + * This work is licensed under the terms of the GNU GPL, version 2 or
> > later.
> > + * See the COPYING file in the top-level directory.
> > + */
> > +
> > +#include "qemu/osdep.h"
> > +#include "hw/firmware/smbios.h"
> > +
> > +void smbios_add_usr_blob_size(size_t size)
> > +{
> > +}
> > +
> > --
> > 2.39.3
> >
>
