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author | Eric Auger <eric.auger@redhat.com> | 2020-03-05 17:51:44 +0100 |
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committer | Stefan Berger <stefanb@linux.vnet.ibm.com> | 2020-03-05 12:18:08 -0500 |
commit | 229de57ac50a1677879f38b98243b2d6d5e2c11b (patch) | |
tree | 2cc2129938bbfdd50079afd4727d0a23621946bb /hw/tpm | |
parent | 2e8f7675b59f9cf448ff3cf2ec1671350ad60a67 (diff) | |
download | qemu-229de57ac50a1677879f38b98243b2d6d5e2c11b.zip qemu-229de57ac50a1677879f38b98243b2d6d5e2c11b.tar.gz qemu-229de57ac50a1677879f38b98243b2d6d5e2c11b.tar.bz2 |
tpm: Add the SysBus TPM TIS device
Introduce the tpm-tis-device which is a sysbus device
and is bound to be used on ARM.
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: 20200305165149.618-6-eric.auger@redhat.com
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Diffstat (limited to 'hw/tpm')
-rw-r--r-- | hw/tpm/Kconfig | 5 | ||||
-rw-r--r-- | hw/tpm/Makefile.objs | 1 | ||||
-rw-r--r-- | hw/tpm/tpm_tis_sysbus.c | 159 |
3 files changed, 165 insertions, 0 deletions
diff --git a/hw/tpm/Kconfig b/hw/tpm/Kconfig index 686f820..4794e7f 100644 --- a/hw/tpm/Kconfig +++ b/hw/tpm/Kconfig @@ -7,6 +7,11 @@ config TPM_TIS_ISA depends on TPM && ISA_BUS select TPM_TIS +config TPM_TIS_SYSBUS + bool + depends on TPM + select TPM_TIS + config TPM_TIS bool depends on TPM diff --git a/hw/tpm/Makefile.objs b/hw/tpm/Makefile.objs index 3ef2036..f1ec4be 100644 --- a/hw/tpm/Makefile.objs +++ b/hw/tpm/Makefile.objs @@ -1,6 +1,7 @@ common-obj-$(CONFIG_TPM) += tpm_util.o obj-$(call lor,$(CONFIG_TPM_TIS),$(CONFIG_TPM_CRB)) += tpm_ppi.o common-obj-$(CONFIG_TPM_TIS_ISA) += tpm_tis_isa.o +common-obj-$(CONFIG_TPM_TIS_SYSBUS) += tpm_tis_sysbus.o common-obj-$(CONFIG_TPM_TIS) += tpm_tis_common.o common-obj-$(CONFIG_TPM_CRB) += tpm_crb.o common-obj-$(CONFIG_TPM_PASSTHROUGH) += tpm_passthrough.o diff --git a/hw/tpm/tpm_tis_sysbus.c b/hw/tpm/tpm_tis_sysbus.c new file mode 100644 index 0000000..18c02ae --- /dev/null +++ b/hw/tpm/tpm_tis_sysbus.c @@ -0,0 +1,159 @@ +/* + * tpm_tis_sysbus.c - QEMU's TPM TIS SYSBUS Device + * + * Copyright (C) 2006,2010-2013 IBM Corporation + * + * Authors: + * Stefan Berger <stefanb@us.ibm.com> + * David Safford <safford@us.ibm.com> + * + * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + * Implementation of the TIS interface according to specs found at + * http://www.trustedcomputinggroup.org. This implementation currently + * supports version 1.3, 21 March 2013 + * In the developers menu choose the PC Client section then find the TIS + * specification. + * + * TPM TIS for TPM 2 implementation following TCG PC Client Platform + * TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43 + */ + +#include "qemu/osdep.h" +#include "hw/qdev-properties.h" +#include "migration/vmstate.h" +#include "tpm_util.h" +#include "hw/sysbus.h" +#include "tpm_tis.h" + +typedef struct TPMStateSysBus { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + TPMState state; /* not a QOM object */ +} TPMStateSysBus; + +#define TPM_TIS_SYSBUS(obj) OBJECT_CHECK(TPMStateSysBus, (obj), TYPE_TPM_TIS_SYSBUS) + +static int tpm_tis_pre_save_sysbus(void *opaque) +{ + TPMStateSysBus *sbdev = opaque; + + return tpm_tis_pre_save(&sbdev->state); +} + +static const VMStateDescription vmstate_tpm_tis_sysbus = { + .name = "tpm-tis", + .version_id = 0, + .pre_save = tpm_tis_pre_save_sysbus, + .fields = (VMStateField[]) { + VMSTATE_BUFFER(state.buffer, TPMStateSysBus), + VMSTATE_UINT16(state.rw_offset, TPMStateSysBus), + VMSTATE_UINT8(state.active_locty, TPMStateSysBus), + VMSTATE_UINT8(state.aborting_locty, TPMStateSysBus), + VMSTATE_UINT8(state.next_locty, TPMStateSysBus), + + VMSTATE_STRUCT_ARRAY(state.loc, TPMStateSysBus, TPM_TIS_NUM_LOCALITIES, + 0, vmstate_locty, TPMLocality), + + VMSTATE_END_OF_LIST() + } +}; + +static void tpm_tis_sysbus_request_completed(TPMIf *ti, int ret) +{ + TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(ti); + TPMState *s = &sbdev->state; + + tpm_tis_request_completed(s, ret); +} + +static enum TPMVersion tpm_tis_sysbus_get_tpm_version(TPMIf *ti) +{ + TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(ti); + TPMState *s = &sbdev->state; + + return tpm_tis_get_tpm_version(s); +} + +static void tpm_tis_sysbus_reset(DeviceState *dev) +{ + TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(dev); + TPMState *s = &sbdev->state; + + return tpm_tis_reset(s); +} + +static Property tpm_tis_sysbus_properties[] = { + DEFINE_PROP_UINT32("irq", TPMStateSysBus, state.irq_num, TPM_TIS_IRQ), + DEFINE_PROP_TPMBE("tpmdev", TPMStateSysBus, state.be_driver), + DEFINE_PROP_BOOL("ppi", TPMStateSysBus, state.ppi_enabled, true), + DEFINE_PROP_END_OF_LIST(), +}; + +static void tpm_tis_sysbus_initfn(Object *obj) +{ + TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(obj); + TPMState *s = &sbdev->state; + + memory_region_init_io(&s->mmio, obj, &tpm_tis_memory_ops, + s, "tpm-tis-mmio", + TPM_TIS_NUM_LOCALITIES << TPM_TIS_LOCALITY_SHIFT); + + sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio); + sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq); +} + +static void tpm_tis_sysbus_realizefn(DeviceState *dev, Error **errp) +{ + TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(dev); + TPMState *s = &sbdev->state; + + if (!tpm_find()) { + error_setg(errp, "at most one TPM device is permitted"); + return; + } + + if (!s->be_driver) { + error_setg(errp, "'tpmdev' property is required"); + return; + } +} + +static void tpm_tis_sysbus_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + TPMIfClass *tc = TPM_IF_CLASS(klass); + + device_class_set_props(dc, tpm_tis_sysbus_properties); + dc->vmsd = &vmstate_tpm_tis_sysbus; + tc->model = TPM_MODEL_TPM_TIS; + dc->realize = tpm_tis_sysbus_realizefn; + dc->user_creatable = true; + dc->reset = tpm_tis_sysbus_reset; + tc->request_completed = tpm_tis_sysbus_request_completed; + tc->get_version = tpm_tis_sysbus_get_tpm_version; +} + +static const TypeInfo tpm_tis_sysbus_info = { + .name = TYPE_TPM_TIS_SYSBUS, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(TPMStateSysBus), + .instance_init = tpm_tis_sysbus_initfn, + .class_init = tpm_tis_sysbus_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_TPM_IF }, + { } + } +}; + +static void tpm_tis_sysbus_register(void) +{ + type_register_static(&tpm_tis_sysbus_info); +} + +type_init(tpm_tis_sysbus_register) |