qemu: Add support for SMBIOS command line options (Alex Williamson)

On Wed, Apr 29, 2009 at 07:51:23PM +0200, Markus Armbruster wrote:
> Gleb Natapov <gleb@redhat.com> writes:
>
> > Backport b6f6e3d3a71cee61320216a42940cfaa9b42a162 from upstream
>
> Also commit c4be29ff (see below).
>
> Since QEMU is transitioning repos, it doesn't hurt to spell out
> "upstream": git://git.savannah.nongnu.org/qemu.git
>
> > BZ:496147
> > BZ:495842
> >
> > This patch should be enough to fix SMBIOS SVVP ssues without further
> > changes to the BIOS since it allows to provide any table info we want.
>
> Pretty straightforward rediff, except:
>
> * The patch to the QEMU patch queue
>   pc-bios/bios-pq/0012-load-smbios-entries-and-files-from-qemu.patch
>   becomes a patch to bios/rombios32.c b/bios/rombios32.c.  Good.
>
> * The change to qemu-options.hx is backported to vl.c.  The update to
>   qemu-doc.texi is dropped.  Not good.
>
> * qemu_uuid_parse() gets external linkage (half of upstream commit
>   c4be29ff), but isn't declared in any header (the other half).  I'd
>   expect that to trigger a warning when you use it in hw/smbios.c.  Not
>   good.
>
Hard to spot among all other warnings :)

Anyway fixed version below:

    qemu: Add support for SMBIOS command line otions (Alex Williamson)

    Create a new -smbios option (x86-only) to allow binary SMBIOS entries
    to be passed through to the BIOS or modify the default values of
    individual fields of type 0 and 1 entries on the command line.

    Binary SMBIOS entries can be generated as follows:

    dmidecode -t 1 -u | grep $'^\t\t[^"]' | xargs -n1 | \
            perl -lne 'printf "%c", hex($_)' > smbios_type_1.bin

    These can then be passed to the BIOS using this switch:

     -smbios file=smbios_type_1.bin

    Command line generation supports the following syntax:

     -smbios type=0[,vendor=str][,version=str][,date=str][,release=%d.%d]
     -smbios type=1[,manufacturer=str][,product=str][,version=str][,serial=str]
                  [,uuid=$(uuidgen)][,sku=str][,family=str]

    For instance, to add a serial number to the type 1 table:

     -smbios type=1,serial=0123456789

    Interface is extensible to support more fields/tables as needed.

    aliguori: remove texi formatting from help output

    Signed-off-by: Alex Williamson <alex.williamson@hp.com>
    Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Message-ID: <20090430075427.GH5082@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Obsoletes: <20090428085105.GF5082@redhat.com>
RH-Upstream-status: applied(qemu/master)
Bugzilla: 501729
Bugzilla: 501729
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Zachary Amsden <zamsden@redhat.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>

8 files changed, 664 insertions, 65 deletions

diff --git a/bios/rombios32.c b/bios/rombios32.c
index 3bab2986..f1e1834a 100755
--- a/bios/rombios32.c
+++ b/bios/rombios32.c
@@ -442,7 +442,6 @@ uint32_t cpuid_features;
 uint32_t cpuid_ext_features;
 unsigned long ram_size;
 uint64_t ram_end;
-uint8_t bios_uuid[16];
 #ifdef BX_USE_EBDA_TABLES
 unsigned long ebda_cur_addr;
 #endif
@@ -477,6 +476,7 @@ void wrmsr_smp(uint32_t index, uint64_t val)
 #define QEMU_CFG_UUID       0x02
 #define QEMU_CFG_ARCH_LOCAL     0x8000
 #define QEMU_CFG_ACPI_TABLES  (QEMU_CFG_ARCH_LOCAL + 0)
+#define QEMU_CFG_SMBIOS_ENTRIES  (QEMU_CFG_ARCH_LOCAL + 1)
 
 int qemu_cfg_port;
 
@@ -525,19 +525,17 @@ static int acpi_load_table(int i, uint32_t addr, uint16_t *len)
     qemu_cfg_read((uint8_t*)addr, *len);
     return 0;
 }
-#endif
 
-void uuid_probe(void)
+static uint16_t smbios_entries(void)
 {
-#ifdef BX_QEMU
-    if(qemu_cfg_port) {
-        qemu_cfg_select(QEMU_CFG_UUID);
-        qemu_cfg_read(bios_uuid, 16);
-        return;
-    }
-#endif
-    memset(bios_uuid, 0, 16);
+    uint16_t cnt;
+
+    qemu_cfg_select(QEMU_CFG_SMBIOS_ENTRIES);
+    qemu_cfg_read((uint8_t*)&cnt, sizeof(cnt));
+
+    return cnt;
 }
+#endif
 
 void cpu_probe(void)
 {
@@ -1856,21 +1854,105 @@ smbios_entry_point_init(void *start,
     ep->intermediate_checksum = -sum;
     }
 
+struct smbios_header {
+    uint16_t length;
+    uint8_t type;
+} __attribute__((__packed__));
+
+struct smbios_field {
+    struct smbios_header header;
+    uint8_t type;
+    uint16_t offset;
+    uint8_t data[];
+} __attribute__((__packed__));
+
+struct smbios_table {
+    struct smbios_header header;
+    uint8_t data[];
+} __attribute__((__packed__));
+
+#define SMBIOS_FIELD_ENTRY 0
+#define SMBIOS_TABLE_ENTRY 1
+
+static size_t
+smbios_load_field(int type, size_t offset, void *addr)
+{
+#ifdef BX_QEMU
+    int i;
+
+    for (i = smbios_entries(); i > 0; i--) {
+        struct smbios_field field;
+
+        qemu_cfg_read((uint8_t *)&field, sizeof(struct smbios_header));
+        field.header.length -= sizeof(struct smbios_header);
+
+        if (field.header.type != SMBIOS_FIELD_ENTRY) {
+            while (field.header.length--)
+                inb(QEMU_CFG_DATA_PORT);
+            continue;
+        }
+
+        qemu_cfg_read((uint8_t *)&field.type,
+                      sizeof(field) - sizeof(struct smbios_header));
+        field.header.length -= sizeof(field) - sizeof(struct smbios_header);
+
+        if (field.type != type || field.offset != offset) {
+            while (field.header.length--)
+                inb(QEMU_CFG_DATA_PORT);
+            continue;
+        }
+
+        qemu_cfg_read(addr, field.header.length);
+        return (size_t)field.header.length;
+    }
+#endif
+    return 0;
+}
+ 
+#define load_str_field_with_default(type, field, def) do {             \
+    size = smbios_load_field(type, offsetof(struct smbios_type_##type, \
+                                            field), end);              \
+    if (size > 0) {                                                    \
+        end += size;                                                   \
+    } else {                                                           \
+        memcpy(end, def, sizeof(def));                                 \
+        end += sizeof(def);                                            \
+    }                                                                  \
+    p->field = ++str_index;                                            \
+} while (0)
+
+#define load_str_field_or_skip(type, field) do {                       \
+    size = smbios_load_field(type, offsetof(struct smbios_type_##type, \
+                                            field), end);              \
+    if (size > 0) {                                                    \
+        end += size;                                                   \
+        p->field = ++str_index;                                        \
+    } else {                                                           \
+        p->field = 0;                                                  \
+    }                                                                  \
+} while (0)
+
 /* Type 0 -- BIOS Information */
 #define RELEASE_DATE_STR "01/01/2007"
 static void *
-smbios_type_0_init(void *start)
+smbios_init_type_0(void *start)
 {
     struct smbios_type_0 *p = (struct smbios_type_0 *)start;
+    char *end = (char *)start + sizeof(struct smbios_type_0);
+    size_t size;
+    int str_index = 0;
 
     p->header.type = 0;
     p->header.length = sizeof(struct smbios_type_0);
     p->header.handle = 0;
 
-    p->vendor_str = 1;
-    p->bios_version_str = 1;
+    load_str_field_with_default(0, vendor_str, BX_APPNAME);
+    load_str_field_with_default(0, bios_version_str, BX_APPNAME);
+
     p->bios_starting_address_segment = 0xe800;
-    p->bios_release_date_str = 2;
+
+    load_str_field_with_default(0, bios_release_date_str, RELEASE_DATE_STR);
+
     p->bios_rom_size = 0; /* FIXME */
 
     memset(p->bios_characteristics, 0, 8);
@@ -1878,50 +1960,66 @@ smbios_type_0_init(void *start)
     p->bios_characteristics_extension_bytes[0] = 0;
     p->bios_characteristics_extension_bytes[1] = 0;
 
-    p->system_bios_major_release = 1;
-    p->system_bios_minor_release = 0;
+    if (!smbios_load_field(0, offsetof(struct smbios_type_0,
+                                       system_bios_major_release),
+                           &p->system_bios_major_release))
+        p->system_bios_major_release = 1;
+
+    if (!smbios_load_field(0, offsetof(struct smbios_type_0,
+                                       system_bios_minor_release),
+                           &p->system_bios_minor_release))
+        p->system_bios_minor_release = 0;
+
     p->embedded_controller_major_release = 0xff;
     p->embedded_controller_minor_release = 0xff;
 
-    start += sizeof(struct smbios_type_0);
-    memcpy((char *)start, BX_APPNAME, sizeof(BX_APPNAME));
-    start += sizeof(BX_APPNAME);
-    memcpy((char *)start, RELEASE_DATE_STR, sizeof(RELEASE_DATE_STR));
-    start += sizeof(RELEASE_DATE_STR);
-    *((uint8_t *)start) = 0;
+    *end = 0;
+    end++;
 
-    return start+1;
+    return end;
 }
 
 /* Type 1 -- System Information */
 static void *
-smbios_type_1_init(void *start)
+smbios_init_type_1(void *start)
 {
     struct smbios_type_1 *p = (struct smbios_type_1 *)start;
+    char *end = (char *)start + sizeof(struct smbios_type_1);
+    size_t size;
+    int str_index = 0;
+
     p->header.type = 1;
     p->header.length = sizeof(struct smbios_type_1);
     p->header.handle = 0x100;
 
-    p->manufacturer_str = 0;
-    p->product_name_str = 0;
-    p->version_str = 0;
-    p->serial_number_str = 0;
+    load_str_field_or_skip(1, manufacturer_str);
+    load_str_field_or_skip(1, product_name_str);
+    load_str_field_or_skip(1, version_str);
+    load_str_field_or_skip(1, serial_number_str);
 
-    memcpy(p->uuid, bios_uuid, 16);
+    size = smbios_load_field(1, offsetof(struct smbios_type_1,
+                                         uuid), &p->uuid);
+    if (size == 0)
+        memset(p->uuid, 0, 16);
 
     p->wake_up_type = 0x06; /* power switch */
-    p->sku_number_str = 0;
-    p->family_str = 0;
 
-    start += sizeof(struct smbios_type_1);
-    *((uint16_t *)start) = 0;
+    load_str_field_or_skip(1, sku_number_str);
+    load_str_field_or_skip(1, family_str);
 
-    return start+2;
+    *end = 0;
+    end++;
+    if (!str_index) {
+        *end = 0;
+        end++;
+    }
+
+    return end;
 }
 
 /* Type 3 -- System Enclosure */
 static void *
-smbios_type_3_init(void *start)
+smbios_init_type_3(void *start)
 {
     struct smbios_type_3 *p = (struct smbios_type_3 *)start;
 
@@ -1951,7 +2049,7 @@ smbios_type_3_init(void *start)
 
 /* Type 4 -- Processor Information */
 static void *
-smbios_type_4_init(void *start, unsigned int cpu_number)
+smbios_init_type_4(void *start, unsigned int cpu_number)
 {
     struct smbios_type_4 *p = (struct smbios_type_4 *)start;
 
@@ -1991,7 +2089,7 @@ smbios_type_4_init(void *start, unsigned int cpu_number)
 
 /* Type 16 -- Physical Memory Array */
 static void *
-smbios_type_16_init(void *start, uint32_t memsize, int nr_mem_devs)
+smbios_init_type_16(void *start, uint32_t memsize, int nr_mem_devs)
 {
     struct smbios_type_16 *p = (struct smbios_type_16*)start;
 
@@ -2014,7 +2112,7 @@ smbios_type_16_init(void *start, uint32_t memsize, int nr_mem_devs)
 
 /* Type 17 -- Memory Device */
 static void *
-smbios_type_17_init(void *start, uint32_t memory_size_mb, int instance)
+smbios_init_type_17(void *start, uint32_t memory_size_mb, int instance)
 {
     struct smbios_type_17 *p = (struct smbios_type_17 *)start;
 
@@ -2044,7 +2142,7 @@ smbios_type_17_init(void *start, uint32_t memory_size_mb, int instance)
 
 /* Type 19 -- Memory Array Mapped Address */
 static void *
-smbios_type_19_init(void *start, uint32_t memory_size_mb, int instance)
+smbios_init_type_19(void *start, uint32_t memory_size_mb, int instance)
 {
     struct smbios_type_19 *p = (struct smbios_type_19 *)start;
 
@@ -2065,7 +2163,7 @@ smbios_type_19_init(void *start, uint32_t memory_size_mb, int instance)
 
 /* Type 20 -- Memory Device Mapped Address */
 static void *
-smbios_type_20_init(void *start, uint32_t memory_size_mb, int instance)
+smbios_init_type_20(void *start, uint32_t memory_size_mb, int instance)
 {
     struct smbios_type_20 *p = (struct smbios_type_20 *)start;
 
@@ -2089,7 +2187,7 @@ smbios_type_20_init(void *start, uint32_t memory_size_mb, int instance)
 
 /* Type 32 -- System Boot Information */
 static void *
-smbios_type_32_init(void *start)
+smbios_init_type_32(void *start)
 {
     struct smbios_type_32 *p = (struct smbios_type_32 *)start;
 
@@ -2107,7 +2205,7 @@ smbios_type_32_init(void *start)
 
 /* Type 127 -- End of Table */
 static void *
-smbios_type_127_init(void *start)
+smbios_init_type_127(void *start)
 {
     struct smbios_type_127 *p = (struct smbios_type_127 *)start;
 
@@ -2121,6 +2219,78 @@ smbios_type_127_init(void *start)
     return start + 2;
 }
 
+static int
+smbios_load_external(int type, char **p, unsigned *nr_structs,
+                     unsigned *max_struct_size)
+{
+#ifdef BX_QEMU
+    static uint64_t used_bitmap[4] = { 0 };
+    char *start = *p;
+    int i;
+
+    /* Check if we've already reported these tables */
+    if (used_bitmap[(type >> 6) & 0x3] & (1ULL << (type & 0x3f)))
+        return 1;
+
+    /* Don't introduce spurious end markers */
+    if (type == 127)
+        return 0;
+
+    for (i = smbios_entries(); i > 0; i--) {
+        struct smbios_table table;
+        struct smbios_structure_header *header = (void *)*p;
+        int string;
+
+        qemu_cfg_read((uint8_t *)&table, sizeof(struct smbios_header));
+        table.header.length -= sizeof(struct smbios_header);
+
+        if (table.header.type != SMBIOS_TABLE_ENTRY) {
+            while (table.header.length--)
+                inb(QEMU_CFG_DATA_PORT);
+            continue;
+        }
+
+        qemu_cfg_read((uint8_t *)*p, sizeof(struct smbios_structure_header));
+        table.header.length -= sizeof(struct smbios_structure_header);
+
+        if (header->type != type) {
+            while (table.header.length--)
+                inb(QEMU_CFG_DATA_PORT);
+            continue;
+        }
+
+        *p += sizeof(struct smbios_structure_header);
+
+        /* Entries end with a double NULL char, if there's a string at
+         * the end (length is greater than formatted length), the string
+         * terminator provides the first NULL. */
+        string = header->length < table.header.length +
+                 sizeof(struct smbios_structure_header);
+
+        /* Read the rest and terminate the entry */
+        qemu_cfg_read((uint8_t *)*p, table.header.length);
+        *p += table.header.length;
+        *((uint8_t*)*p) = 0;
+        (*p)++;
+        if (!string) {
+            *((uint8_t*)*p) = 0;
+            (*p)++;
+        }
+
+        (*nr_structs)++;
+        if (*p - (char *)header > *max_struct_size)
+            *max_struct_size = *p - (char *)header;
+    }
+
+    /* Mark that we've reported on this type */
+    used_bitmap[(type >> 6) & 0x3] |= (1ULL << (type & 0x3f));
+
+    return (start != *p);
+#else /* !BX_QEMU */
+    return 0;
+#endif
+}
+
 void smbios_init(void)
 {
     unsigned cpu_num, nr_structs = 0, max_struct_size = 0;
@@ -2139,34 +2309,39 @@ void smbios_init(void)
 
 	p = (char *)start + sizeof(struct smbios_entry_point);
 
-#define add_struct(fn) do{ \
-    q = (fn); \
-    nr_structs++; \
-    if ((q - p) > max_struct_size) \
-        max_struct_size = q - p; \
-    p = q; \
-}while (0)
-
-    add_struct(smbios_type_0_init(p));
-    add_struct(smbios_type_1_init(p));
-    add_struct(smbios_type_3_init(p));
+#define add_struct(type, args...) do {                                    \
+    if (!smbios_load_external(type, &p, &nr_structs, &max_struct_size)) { \
+        q = smbios_init_type_##type(args);                                \
+        nr_structs++;                                                     \
+        if ((q - p) > max_struct_size)                                    \
+            max_struct_size = q - p;                                      \
+        p = q;                                                            \
+    }                                                                     \
+} while (0)
+
+    add_struct(0, p);
+    add_struct(1, p);
+    add_struct(3, p);
     for (cpu_num = 1; cpu_num <= smp_cpus; cpu_num++)
-        add_struct(smbios_type_4_init(p, cpu_num));
+        add_struct(4, p, cpu_num);
 
     /* Each 'memory device' covers up to 16GB of address space. */
     nr_mem_devs = (memsize + 0x3fff) >> 14;
-    add_struct(smbios_type_16_init(p, memsize, nr_mem_devs));
+    add_struct(16, p, memsize, nr_mem_devs);
     for ( i = 0; i < nr_mem_devs; i++ )
     {
         uint32_t dev_memsize = ((i == (nr_mem_devs - 1))
                                 ? (((memsize-1) & 0x3fff)+1) : 0x4000);
-        add_struct(smbios_type_17_init(p, dev_memsize, i));
-        add_struct(smbios_type_19_init(p, dev_memsize, i));
-        add_struct(smbios_type_20_init(p, dev_memsize, i));
+        add_struct(17, p, dev_memsize, i);
+        add_struct(19, p, dev_memsize, i);
+        add_struct(20, p, dev_memsize, i);
     }
 
-    add_struct(smbios_type_32_init(p));
-    add_struct(smbios_type_127_init(p));
+    add_struct(32, p);
+    /* Add any remaining provided entries before the end marker */
+    for (i = 0; i < 256; i++)
+        smbios_load_external(i, &p, &nr_structs, &max_struct_size);
+    add_struct(127, p);
 
 #undef add_struct
 
@@ -2273,8 +2448,6 @@ void rombios32_init(uint32_t *s3_resume_vector, uint8_t *shutdown_flag)
 
         mptable_init();
 
-        uuid_probe();
-
         smbios_init();
 
         if (acpi_enabled)
diff --git a/qemu/Makefile.target b/qemu/Makefile.target
index 2a946348..984c8b8d 100644
--- a/qemu/Makefile.target
+++ b/qemu/Makefile.target
@@ -714,7 +714,7 @@ ifeq ($(TARGET_BASE_ARCH), i386)
 OBJS+= ide.o pckbd.o ps2.o vga.o $(SOUND_HW) dma.o
 OBJS+= fdc.o mc146818rtc.o serial.o i8259.o i8254.o pcspk.o pc.o
 OBJS+= cirrus_vga.o apic.o parallel.o acpi.o piix_pci.o
-OBJS+= usb-uhci.o vmmouse.o vmport.o vmware_vga.o hpet.o
+OBJS+= usb-uhci.o vmmouse.o vmport.o vmware_vga.o hpet.o smbios.o
 OBJS+= extboot.o
 # virtio support
 OBJS+= virtio.o virtio-blk.o virtio-balloon.o
diff --git a/qemu/hw/pc.c b/qemu/hw/pc.c
index 6dc8ebe8..0d708567 100644
--- a/qemu/hw/pc.c
+++ b/qemu/hw/pc.c
@@ -37,6 +37,7 @@
 #include "virtio-balloon.h"
 #include "hpet_emul.h"
 #include "device-assignment.h"
+#include "smbios.h"
 
 #include "qemu-kvm.h"
 
@@ -54,6 +55,7 @@
 #define ACPI_DATA_SIZE       0x10000
 #define BIOS_CFG_IOPORT 0x510
 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
+#define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1)
 
 #define MAX_IDE_BUS 2
 
@@ -431,6 +433,8 @@ static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
 static void bochs_bios_init(void)
 {
     void *fw_cfg;
+    uint8_t *smbios_table;
+    size_t smbios_len;
 
     register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
     register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
@@ -447,6 +451,11 @@ static void bochs_bios_init(void)
     fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
     fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, acpi_tables, acpi_tables_len);
+
+    smbios_table = smbios_get_table(&smbios_len);
+    if (smbios_table)
+        fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES,
+                         smbios_table, smbios_len);
 }
 
 /* Generate an initial boot sector which sets state and jump to
diff --git a/qemu/hw/smbios.c b/qemu/hw/smbios.c
new file mode 100644
index 00000000..d31654c2
--- /dev/null
+++ b/qemu/hw/smbios.c
@@ -0,0 +1,225 @@
+/*
+ * SMBIOS Support
+ *
+ * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
+ *
+ * Authors:
+ *  Alex Williamson <alex.williamson@hp.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu-common.h"
+#include "sysemu.h"
+#include "smbios.h"
+
+/*
+ * Structures shared with the BIOS
+ */
+struct smbios_header {
+    uint16_t length;
+    uint8_t type;
+} __attribute__((__packed__));
+
+struct smbios_field {
+    struct smbios_header header;
+    uint8_t type;
+    uint16_t offset;
+    uint8_t data[];
+} __attribute__((__packed__));
+
+struct smbios_table {
+    struct smbios_header header;
+    uint8_t data[];
+} __attribute__((__packed__));
+
+#define SMBIOS_FIELD_ENTRY 0
+#define SMBIOS_TABLE_ENTRY 1
+
+
+static uint8_t *smbios_entries;
+static size_t smbios_entries_len;
+
+uint8_t *smbios_get_table(size_t *length)
+{
+    *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)
+{
+    uint16_t *num_entries = (uint16_t *)smbios_entries;
+    struct smbios_header *header;
+    char *p;
+    int i;
+
+    if (!num_entries)
+        return;
+
+    p = (char *)(num_entries + 1);
+
+    for (i = 0; i < *num_entries; i++) {
+        header = (struct smbios_header *)p;
+        if (entry == SMBIOS_TABLE_ENTRY && header->type == SMBIOS_FIELD_ENTRY) {
+            struct smbios_field *field = (void *)header;
+            if (type == field->type) {
+                fprintf(stderr, "SMBIOS type %d field already defined, "
+                                "cannot add table\n", type);
+                exit(1);
+            }
+        } else if (entry == SMBIOS_FIELD_ENTRY &&
+                   header->type == SMBIOS_TABLE_ENTRY) {
+            struct smbios_structure_header *table = (void *)(header + 1);
+            if (type == table->type) {
+                fprintf(stderr, "SMBIOS type %d table already defined, "
+                                "cannot add field\n", type);
+                exit(1);
+            }
+        }
+        p += le16_to_cpu(header->length);
+    }
+}
+
+void smbios_add_field(int type, int offset, int len, void *data)
+{
+    struct smbios_field *field;
+
+    smbios_check_collision(type, SMBIOS_FIELD_ENTRY);
+
+    if (!smbios_entries) {
+        smbios_entries_len = sizeof(uint16_t);
+        smbios_entries = qemu_mallocz(smbios_entries_len);
+    }
+    smbios_entries = qemu_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(const char *t)
+{
+    char buf[1024];
+
+    if (get_param_value(buf, sizeof(buf), "vendor", t))
+        smbios_add_field(0, offsetof(struct smbios_type_0, vendor_str),
+                         strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "version", t))
+        smbios_add_field(0, offsetof(struct smbios_type_0, bios_version_str),
+                         strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "date", t))
+        smbios_add_field(0, offsetof(struct smbios_type_0,
+                                     bios_release_date_str),
+                                     strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "release", t)) {
+        int major, minor;
+        sscanf(buf, "%d.%d", &major, &minor);
+        smbios_add_field(0, offsetof(struct smbios_type_0,
+                                     system_bios_major_release), 1, &major);
+        smbios_add_field(0, offsetof(struct smbios_type_0,
+                                     system_bios_minor_release), 1, &minor);
+    }
+}
+
+static void smbios_build_type_1_fields(const char *t)
+{
+    char buf[1024];
+
+    if (get_param_value(buf, sizeof(buf), "manufacturer", t))
+        smbios_add_field(1, offsetof(struct smbios_type_1, manufacturer_str),
+                         strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "product", t))
+        smbios_add_field(1, offsetof(struct smbios_type_1, product_name_str),
+                         strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "version", t))
+        smbios_add_field(1, offsetof(struct smbios_type_1, version_str),
+                         strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "serial", t))
+        smbios_add_field(1, offsetof(struct smbios_type_1, serial_number_str),
+                         strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "uuid", t)) {
+        if (qemu_uuid_parse(buf, qemu_uuid) != 0) {
+            fprintf(stderr, "Invalid SMBIOS UUID string\n");
+            exit(1);
+        }
+    }
+    if (get_param_value(buf, sizeof(buf), "sku", t))
+        smbios_add_field(1, offsetof(struct smbios_type_1, sku_number_str),
+                         strlen(buf) + 1, buf);
+    if (get_param_value(buf, sizeof(buf), "family", t))
+        smbios_add_field(1, offsetof(struct smbios_type_1, family_str),
+                         strlen(buf) + 1, buf);
+}
+
+int smbios_entry_add(const char *t)
+{
+    char buf[1024];
+
+    if (get_param_value(buf, sizeof(buf), "file", t)) {
+        struct smbios_structure_header *header;
+        struct smbios_table *table;
+        int size = get_image_size(buf);
+
+        if (size < sizeof(struct smbios_structure_header)) {
+            fprintf(stderr, "Cannot read smbios file %s", buf);
+            exit(1);
+        }
+
+        if (!smbios_entries) {
+            smbios_entries_len = sizeof(uint16_t);
+            smbios_entries = qemu_mallocz(smbios_entries_len);
+        }
+
+        smbios_entries = qemu_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(buf, table->data) != size) {
+            fprintf(stderr, "Failed to load smbios file %s", buf);
+            exit(1);
+        }
+
+        header = (struct smbios_structure_header *)(table->data);
+        smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY);
+
+        smbios_entries_len += sizeof(*table) + size;
+        (*(uint16_t *)smbios_entries) =
+                cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
+        return 0;
+    }
+
+    if (get_param_value(buf, sizeof(buf), "type", t)) {
+        unsigned long type = strtoul(buf, NULL, 0);
+        switch (type) {
+        case 0:
+            smbios_build_type_0_fields(t);
+            return 0;
+        case 1:
+            smbios_build_type_1_fields(t);
+            return 0;
+        default:
+            fprintf(stderr, "Don't know how to build fields for SMBIOS type "
+                    "%ld\n", type);
+            exit(1);
+        }
+    }
+
+    fprintf(stderr, "smbios: must specify type= or file=\n");
+    return -1;
+}
diff --git a/qemu/hw/smbios.h b/qemu/hw/smbios.h
new file mode 100644
index 00000000..3a5169db
--- /dev/null
+++ b/qemu/hw/smbios.h
@@ -0,0 +1,162 @@
+#ifndef QEMU_SMBIOS_H
+#define QEMU_SMBIOS_H
+/*
+ * SMBIOS Support
+ *
+ * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
+ *
+ * Authors:
+ *  Alex Williamson <alex.williamson@hp.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+int smbios_entry_add(const char *t);
+void smbios_add_field(int type, int offset, int len, void *data);
+uint8_t *smbios_get_table(size_t *length);
+
+/*
+ * SMBIOS spec defined tables
+ */
+
+/* This goes at the beginning of every SMBIOS structure. */
+struct smbios_structure_header {
+    uint8_t type;
+    uint8_t length;
+    uint16_t handle;
+} __attribute__((__packed__));
+
+/* SMBIOS type 0 - BIOS Information */
+struct smbios_type_0 {
+    struct smbios_structure_header header;
+    uint8_t vendor_str;
+    uint8_t bios_version_str;
+    uint16_t bios_starting_address_segment;
+    uint8_t bios_release_date_str;
+    uint8_t bios_rom_size;
+    uint8_t bios_characteristics[8];
+    uint8_t bios_characteristics_extension_bytes[2];
+    uint8_t system_bios_major_release;
+    uint8_t system_bios_minor_release;
+    uint8_t embedded_controller_major_release;
+    uint8_t embedded_controller_minor_release;
+} __attribute__((__packed__));
+
+/* SMBIOS type 1 - System Information */
+struct smbios_type_1 {
+    struct smbios_structure_header header;
+    uint8_t manufacturer_str;
+    uint8_t product_name_str;
+    uint8_t version_str;
+    uint8_t serial_number_str;
+    uint8_t uuid[16];
+    uint8_t wake_up_type;
+    uint8_t sku_number_str;
+    uint8_t family_str;
+} __attribute__((__packed__));
+
+/* SMBIOS type 3 - System Enclosure (v2.3) */
+struct smbios_type_3 {
+    struct smbios_structure_header header;
+    uint8_t manufacturer_str;
+    uint8_t type;
+    uint8_t version_str;
+    uint8_t serial_number_str;
+    uint8_t asset_tag_number_str;
+    uint8_t boot_up_state;
+    uint8_t power_supply_state;
+    uint8_t thermal_state;
+    uint8_t security_status;
+    uint32_t oem_defined;
+    uint8_t height;
+    uint8_t number_of_power_cords;
+    uint8_t contained_element_count;
+    // contained elements follow
+} __attribute__((__packed__));
+
+/* SMBIOS type 4 - Processor Information (v2.0) */
+struct smbios_type_4 {
+    struct smbios_structure_header header;
+    uint8_t socket_designation_str;
+    uint8_t processor_type;
+    uint8_t processor_family;
+    uint8_t processor_manufacturer_str;
+    uint32_t processor_id[2];
+    uint8_t processor_version_str;
+    uint8_t voltage;
+    uint16_t external_clock;
+    uint16_t max_speed;
+    uint16_t current_speed;
+    uint8_t status;
+    uint8_t processor_upgrade;
+    uint16_t l1_cache_handle;
+    uint16_t l2_cache_handle;
+    uint16_t l3_cache_handle;
+} __attribute__((__packed__));
+
+/* SMBIOS type 16 - Physical Memory Array
+ *   Associated with one type 17 (Memory Device).
+ */
+struct smbios_type_16 {
+    struct smbios_structure_header header;
+    uint8_t location;
+    uint8_t use;
+    uint8_t error_correction;
+    uint32_t maximum_capacity;
+    uint16_t memory_error_information_handle;
+    uint16_t number_of_memory_devices;
+} __attribute__((__packed__));
+/* SMBIOS type 17 - Memory Device
+ *   Associated with one type 19
+ */
+struct smbios_type_17 {
+    struct smbios_structure_header header;
+    uint16_t physical_memory_array_handle;
+    uint16_t memory_error_information_handle;
+    uint16_t total_width;
+    uint16_t data_width;
+    uint16_t size;
+    uint8_t form_factor;
+    uint8_t device_set;
+    uint8_t device_locator_str;
+    uint8_t bank_locator_str;
+    uint8_t memory_type;
+    uint16_t type_detail;
+} __attribute__((__packed__));
+
+/* SMBIOS type 19 - Memory Array Mapped Address */
+struct smbios_type_19 {
+    struct smbios_structure_header header;
+    uint32_t starting_address;
+    uint32_t ending_address;
+    uint16_t memory_array_handle;
+    uint8_t partition_width;
+} __attribute__((__packed__));
+
+/* SMBIOS type 20 - Memory Device Mapped Address */
+struct smbios_type_20 {
+    struct smbios_structure_header header;
+    uint32_t starting_address;
+    uint32_t ending_address;
+    uint16_t memory_device_handle;
+    uint16_t memory_array_mapped_address_handle;
+    uint8_t partition_row_position;
+    uint8_t interleave_position;
+    uint8_t interleaved_data_depth;
+} __attribute__((__packed__));
+
+/* SMBIOS type 32 - System Boot Information */
+struct smbios_type_32 {
+    struct smbios_structure_header header;
+    uint8_t reserved[6];
+    uint8_t boot_status;
+} __attribute__((__packed__));
+
+/* SMBIOS type 127 -- End-of-table */
+struct smbios_type_127 {
+    struct smbios_structure_header header;
+} __attribute__((__packed__));
+
+#endif /*QEMU_SMBIOS_H */
diff --git a/qemu/qemu-doc.texi b/qemu/qemu-doc.texi
index 43682a0b..71f2097f 100644
--- a/qemu/qemu-doc.texi
+++ b/qemu/qemu-doc.texi
@@ -882,6 +882,15 @@ Use @var{file} as initial ram disk.
 @item -acpitable [sig=@var{str}][,rev=@var{n}][,oem_id=@var{str}][,oem_table_id=@var{str}][,oem_rev=@var{n}] [,asl_compiler_id=@var{str}][,asl_compiler_rev=@var{n}][,data=@var{file1}[:@var{file2}]...]
 Add ACPI table with specified header fields and context from specified files.
 
+@item -smbios file=@var{binary}
+Load SMBIOS entry from binary file.
+
+@item -smbios type=0[,vendor=@var{str}][,version=@var{str}][,date=@var{str}][,release=@var{%d.%d}]
+Specify SMBIOS type 0 fields
+
+@item -smbios type=1[,manufacturer=@var{str}][,product=@var{str}][,version=@var{str}][,serial=@var{str}][,uuid=@var{uuid}][,sku=@var{str}][,family=@var{str}]
+Specify SMBIOS type 1 fields
+
 @end table
 
 Debug/Expert options:
diff --git a/qemu/sysemu.h b/qemu/sysemu.h
index f9203465..c62e7cd1 100644
--- a/qemu/sysemu.h
+++ b/qemu/sysemu.h
@@ -9,6 +9,7 @@ extern const char *bios_dir;
 extern int vm_running;
 extern const char *qemu_name;
 extern uint8_t qemu_uuid[];
+int qemu_uuid_parse(const char *str, uint8_t *uuid);
 #define UUID_FMT "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
 
 typedef struct vm_change_state_entry VMChangeStateEntry;
diff --git a/qemu/vl.c b/qemu/vl.c
index 030de150..e81687a6 100644
--- a/qemu/vl.c
+++ b/qemu/vl.c
@@ -32,6 +32,7 @@
 #include "hw/isa.h"
 #include "hw/baum.h"
 #include "hw/bt.h"
+#include "hw/smbios.h"
 #include "net.h"
 #include "console.h"
 #include "sysemu.h"
@@ -4250,6 +4251,13 @@ static void help(int exitcode)
            "-no-hpet        disable HPET\n"
            "-acpitable [sig=str][,rev=n][,oem_id=str][,oem_table_id=str][,oem_rev=n][,asl_compiler_id=str][,asl_compiler_rev=n][,data=file1[:file2]...]\n"
            "                ACPI table description\n"
+           "-smbios file=binary\n"
+           "                Load SMBIOS entry from binary file\n"
+           "-smbios type=0[,vendor=str][,version=str][,date=str][,release=%%d.%%d]\n"
+           "                Specify SMBIOS type 0 fields\n"
+           "-smbios type=1[,manufacturer=str][,product=str][,version=str][,serial=str]\n"
+           "              [,uuid=uuid][,sku=str][,family=str]\n"
+           "                Specify SMBIOS type 1 fields\n"
 #endif
 #ifdef CONFIG_CURSES
            "-curses         use a curses/ncurses interface instead of SDL\n"
@@ -4378,6 +4386,7 @@ enum {
     QEMU_OPTION_no_acpi,
     QEMU_OPTION_no_hpet,
     QEMU_OPTION_acpitable,
+    QEMU_OPTION_smbios,
     QEMU_OPTION_curses,
     QEMU_OPTION_no_kvm,
     QEMU_OPTION_no_kvm_irqchip,
@@ -4529,6 +4538,7 @@ static const QEMUOption qemu_options[] = {
     { "no-acpi", 0, QEMU_OPTION_no_acpi },
     { "no-hpet", 0, QEMU_OPTION_no_hpet },
     { "acpitable", HAS_ARG, QEMU_OPTION_acpitable },
+    { "smbios", HAS_ARG, QEMU_OPTION_smbios },
     { "no-reboot", 0, QEMU_OPTION_no_reboot },
     { "no-shutdown", 0, QEMU_OPTION_no_shutdown },
     { "show-cursor", 0, QEMU_OPTION_show_cursor },
@@ -4787,7 +4797,7 @@ static BOOL WINAPI qemu_ctrl_handler(DWORD type)
 }
 #endif
 
-static int qemu_uuid_parse(const char *str, uint8_t *uuid)
+int qemu_uuid_parse(const char *str, uint8_t *uuid)
 {
     int ret;
 
@@ -4801,6 +4811,10 @@ static int qemu_uuid_parse(const char *str, uint8_t *uuid)
     if(ret != 16)
         return -1;
 
+#ifdef TARGET_I386
+    smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
+#endif
+
     return 0;
 }
 
@@ -5530,6 +5544,12 @@ int main(int argc, char **argv, char **envp)
                     exit(1);
                 }
                 break;
+            case QEMU_OPTION_smbios:
+                if(smbios_entry_add(optarg) < 0) {
+                    fprintf(stderr, "Wrong smbios provided\n");
+                    exit(1);
+                }
+                break;
 #endif
 #ifdef USE_KQEMU
             case QEMU_OPTION_no_kqemu: