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hw/arm/virt: vTPM support

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Let the TPM TIS SYSBUS device be dynamically instantiable
in ARM virt.  A device tree node is dynamically created
(TPM via MMIO).

The TPM Physical Presence interface (PPI) is not supported.

To run with the swtmp TPM emulator, the qemu command line must
be augmented with:

        -chardev socket,id=chrtpm,path=swtpm-sock \
        -tpmdev emulator,id=tpm0,chardev=chrtpm \
        -device tpm-tis-device,tpmdev=tpm0 \

swtpm/libtpms command line example:

swtpm socket --tpm2 -t -d --tpmstate dir=/tmp/tpm \
--ctrl type=unixio,path=swtpm-sock

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 20200305165149.618-7-eric.auger@redhat.com
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Eric Auger 2020-03-05 17:51:45 +01:00 • committed by Stefan Berger
parent 229de57ac5
commit c294ac327c
3 changed files with 41 additions and 0 deletions
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7
hw/arm/virt.c
View file

@ -48,6 +48,7 @@
#include "sysemu/numa.h"
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
#include "sysemu/tpm.h"
#include "sysemu/kvm.h"
#include "hw/loader.h"
#include "exec/address-spaces.h"
@ -2083,6 +2084,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_AMD_XGBE);
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_PLATFORM);
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
mc->block_default_type = IF_VIRTIO;
mc->no_cdrom = 1;
mc->pci_allow_0_address = true;
@ -2196,6 +2198,11 @@ type_init(machvirt_machine_init);
static void virt_machine_5_0_options(MachineClass *mc)
{
static GlobalProperty compat[] = {
{ TYPE_TPM_TIS_SYSBUS, "ppi", "false" },
};
compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat));
}
DEFINE_VIRT_MACHINE_AS_LATEST(5, 0)