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hw/i386: expose a "smbios-entry-point-type" PC machine property

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The i440fx and Q35 machine types are both hardcoded to use the
legacy SMBIOS 2.1 (32-bit) entry point. This is a sensible
conservative choice because SeaBIOS only supports SMBIOS 2.1

EDK2, however, can also support SMBIOS 3.0 (64-bit) entry points,
and QEMU already uses this on the ARM virt machine type.

This adds a property to allow the choice of SMBIOS entry point
versions For example to opt in to 64-bit SMBIOS entry point:

   $QEMU -machine q35,smbios-entry-point-type=64

Based on a patch submitted by Daniel Berrangé.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211026151100.1691925-4-ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Eduardo Habkost 2021-10-26 11:11:00 -04:00 • committed by Michael S. Tsirkin
parent bdf54a9a7b
commit 0e4edb3b3b
4 changed files with 32 additions and 2 deletions
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4
include/hw/i386/pc.h
View file

@ -13,6 +13,7 @@
#include "hw/hotplug.h"
#include "qom/object.h"
#include "hw/i386/sgx-epc.h"
#include "hw/firmware/smbios.h"
#define HPET_INTCAP "hpet-intcap"
@ -40,6 +41,7 @@ typedef struct PCMachineState {
/* Configuration options: */
uint64_t max_ram_below_4g;
OnOffAuto vmport;
SmbiosEntryPointType smbios_entry_point_type;
bool acpi_build_enabled;
bool smbus_enabled;
@ -63,6 +65,8 @@ typedef struct PCMachineState {
#define PC_MACHINE_SATA "sata"
#define PC_MACHINE_PIT "pit"
#define PC_MACHINE_MAX_FW_SIZE "max-fw-size"
#define PC_MACHINE_SMBIOS_EP "smbios-entry-point-type"
/**
* PCMachineClass:
*