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SMBIOS: Update Type 0 struct generator for machines >= 2.1 

Update how type 0 (bios info) structures are generated, as follows:

  - convert bios_characteristics field to uin64_t (instead of
    uint8_t[8]), as described in the current smbios spec (v2.8)

  - enable "virtual machine" bit in bios_characteristics_extension_bits

  - add command line option to enable "uefi supported" bit in
    bios_characteristics_extension_bits

These updates should make this optional structure more useful when
used with edk2/ovmf. Only pc machines >= 2.1 are affected, and only
when a type 0 structure is explicitly specified on the command line.

Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gabriel L. Somlo 2014-05-19 10:09:54 -04:00 committed by Michael S. Tsirkin
parent fb5be2e833
commit 84351843eb
3 changed files with 14 additions and 10 deletions
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18
hw/i386/smbios.c
View File

@ -67,7 +67,7 @@ static DECLARE_BITMAP(have_fields_bitmap, SMBIOS_MAX_TYPE+1);
static struct {
const char *vendor, *version, *date;
bool have_major_minor;
bool have_major_minor, uefi;
uint8_t major, minor;
} type0;
@ -134,6 +134,10 @@ static const QemuOptDesc qemu_smbios_type0_opts[] = {
.name = "release",
.type = QEMU_OPT_STRING,
.help = "revision number",
},{
.name = "uefi",
.type = QEMU_OPT_BOOL,
.help = "uefi support",
},
{ /* end of list */ }
};
@ -497,13 +501,12 @@ static void smbios_build_type_0_table(void)
t->bios_rom_size = 0; /* hardcoded in SeaBIOS with FIXME comment */
/* BIOS characteristics not supported */
memset(t->bios_characteristics, 0, 8);
t->bios_characteristics[0] = 0x08;
/* Enable targeted content distribution (needed for SVVP, per SeaBIOS) */
t->bios_characteristics = cpu_to_le64(0x08); /* Not supported */
t->bios_characteristics_extension_bytes[0] = 0;
t->bios_characteristics_extension_bytes[1] = 4;
t->bios_characteristics_extension_bytes[1] = 0x14; /* TCD/SVVP | VM */
if (type0.uefi) {
t->bios_characteristics_extension_bytes[1] |= 0x08; /* |= UEFI */
}
if (type0.have_major_minor) {
t->system_bios_major_release = type0.major;
@ -979,6 +982,7 @@ void smbios_entry_add(QemuOpts *opts)
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);
val = qemu_opt_get(opts, "release");
if (val) {

2
include/hw/i386/smbios.h
View File

@ -64,7 +64,7 @@ struct smbios_type_0 {
uint16_t bios_starting_address_segment;
uint8_t bios_release_date_str;
uint8_t bios_rom_size;
uint8_t bios_characteristics[8];
uint64_t bios_characteristics;
uint8_t bios_characteristics_extension_bytes[2];
uint8_t system_bios_major_release;
uint8_t system_bios_minor_release;

4
qemu-options.hx
View File

@ -1335,7 +1335,7 @@ ETEXI
DEF("smbios", HAS_ARG, QEMU_OPTION_smbios,
"-smbios file=binary\n"
" load SMBIOS entry from binary file\n"
"-smbios type=0[,vendor=str][,version=str][,date=str][,release=%d.%d]\n"
"-smbios type=0[,vendor=str][,version=str][,date=str][,release=%d.%d][,uefi=on|off]\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"
@ -1345,7 +1345,7 @@ STEXI
@findex -smbios
Load SMBIOS entry from binary file.
@item -smbios type=0[,vendor=@var{str}][,version=@var{str}][,date=@var{str}][,release=@var{%d.%d}]
@item -smbios type=0[,vendor=@var{str}][,version=@var{str}][,date=@var{str}][,release=@var{%d.%d}][,uefi=on|off]
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}]