[Qemu-devel] [PATCHv2][SEABIOS] Make SMBIOS table pass MS SVVP test

[Qemu-devel] [PATCHv2][SEABIOS] Make SMBIOS table pass MS SVVP test

[Gleb Natapov]

Microsoft SVVP (Server Virtualization Validation Program) expects
arbitrary SMBIOS field to have certain values otherwise it fails.
We all want to make Microsoft happy don't we? So lets put values MS
expects in there.
 
Values modified by the patch:
 Type 0:
  Bit 2 of byte 2 must be 1
 Type 1:
  Manufacturer/product string should not be empty
 Type 3:
  Manufacturer string should not be empty
 Type 4:
  Processor manufacturer should no be empty
  Max/current CPU speed shouldn't be unknown
 Type 16:
  Memory should have error correction.  

---

v1->v2:
 Use CONFIG_APPNAME instead of open coding strings
 Use snprintf. 

Signed-off-by: Gleb Natapov <gleb@redhat.com>
diff --git a/src/smbios.c b/src/smbios.c
index f1b43f2..b812fce 100644
--- a/src/smbios.c
+++ b/src/smbios.c
@@ -96,7 +96,8 @@ smbios_init_type_0(void *start)
     memset(p->bios_characteristics, 0, 8);
     p->bios_characteristics[0] = 0x08; /* BIOS characteristics not supported */
     p->bios_characteristics_extension_bytes[0] = 0;
-    p->bios_characteristics_extension_bytes[1] = 0;
+    /* Enable targeted content distribution. Needed for SVVP */
+    p->bios_characteristics_extension_bytes[1] = 4;
 
     if (!qemu_cfg_smbios_load_field(0, offsetof(struct smbios_type_0,
                                                 system_bios_major_release),
@@ -130,8 +131,8 @@ smbios_init_type_1(void *start)
     p->header.length = sizeof(struct smbios_type_1);
     p->header.handle = 0x100;
 
-    load_str_field_or_skip(1, manufacturer_str);
-    load_str_field_or_skip(1, product_name_str);
+    load_str_field_with_default(1, manufacturer_str, CONFIG_APPNAME);
+    load_str_field_with_default(1, product_name_str, CONFIG_APPNAME);
     load_str_field_or_skip(1, version_str);
     load_str_field_or_skip(1, serial_number_str);
 
@@ -165,7 +166,7 @@ smbios_init_type_3(void *start)
     p->header.length = sizeof(struct smbios_type_3);
     p->header.handle = 0x300;
 
-    p->manufacturer_str = 0;
+    p->manufacturer_str = 1;
     p->type = 0x01; /* other */
     p->version_str = 0;
     p->serial_number_str = 0;
@@ -180,9 +181,9 @@ smbios_init_type_3(void *start)
     p->contained_element_count = 0;
 
     start += sizeof(struct smbios_type_3);
-    *((u16 *)start) = 0;
+    memcpy((char *)start, CONFIG_APPNAME"\0\0", sizeof(CONFIG_APPNAME) + 1);
 
-    return start+2;
+    return start + sizeof(CONFIG_APPNAME) + 1;
 }
 
 /* Type 4 -- Processor Information */
@@ -198,7 +199,7 @@ smbios_init_type_4(void *start, unsigned int cpu_number)
     p->socket_designation_str = 1;
     p->processor_type = 0x03; /* CPU */
     p->processor_family = 0x01; /* other */
-    p->processor_manufacturer_str = 0;
+    p->processor_manufacturer_str = 2;
 
     u32 cpuid_signature, ebx, ecx, cpuid_features;
     cpuid(1, &cpuid_signature, &ebx, &ecx, &cpuid_features);
@@ -209,8 +210,8 @@ smbios_init_type_4(void *start, unsigned int cpu_number)
     p->voltage = 0;
     p->external_clock = 0;
 
-    p->max_speed = 0; /* unknown */
-    p->current_speed = 0; /* unknown */
+    p->max_speed = 2000;
+    p->current_speed = 2000;
 
     p->status = 0x41; /* socket populated, CPU enabled */
     p->processor_upgrade = 0x01; /* other */
@@ -221,10 +222,11 @@ smbios_init_type_4(void *start, unsigned int cpu_number)
 
     start += sizeof(struct smbios_type_4);
 
-    memcpy((char *)start, "CPU  " "\0" "" "\0" "", 7);
-	((char *)start)[4] = cpu_number + '0';
+    snprintf((char*)start, 6, "CPU%2x", cpu_number);
+    start += 6;
+    memcpy((char *)start, CONFIG_APPNAME"\0\0", sizeof(CONFIG_APPNAME) + 1);
 
-    return start+7;
+    return start + sizeof(CONFIG_APPNAME) + 1;
 }
 
 /* Type 16 -- Physical Memory Array */
@@ -239,7 +241,7 @@ smbios_init_type_16(void *start, u32 memory_size_mb, int nr_mem_devs)
 
     p->location = 0x01; /* other */
     p->use = 0x03; /* system memory */
-    p->error_correction = 0x01; /* other */
+    p->error_correction = 0x06; /* Multi-bit ECC to make Microsoft happy */
     p->maximum_capacity = memory_size_mb * 1024;
     p->memory_error_information_handle = 0xfffe; /* none provided */
     p->number_of_memory_devices = nr_mem_devs;
--
			Gleb.

[Qemu-devel] Re: [PATCHv2][SEABIOS] Make SMBIOS table pass MS SVVP test

[Paolo Bonzini]

On 11/23/2009 01:03 PM, Gleb Natapov wrote:
>       p->bios_characteristics[0] = 0x08; /* BIOS characteristics not supported */

FWIW, I agree with not changing this.

 From reading the spec, it seems like the characteristics extensions are 
totally separate from the basic characteristics, and setting bit 3 as 
done above does not mean that the extensions should also be zero.

Paolo

[Qemu-devel] Re: [PATCHv2][SEABIOS] Make SMBIOS table pass MS SVVP test

[Kevin O'Connor]

On Mon, Nov 23, 2009 at 02:03:18PM +0200, Gleb Natapov wrote:
> Microsoft SVVP (Server Virtualization Validation Program) expects
> arbitrary SMBIOS field to have certain values otherwise it fails.
> We all want to make Microsoft happy don't we? So lets put values MS
> expects in there.

Thanks - SeaBIOS commit cf2affa6.

-Kevin