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arm/acpi: Add the TPM2.0 device under the DSDT

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In case it is dynamically instantiated, add the TPM 2.0 device object
under the DSDT table in the ACPI namespace. Its HID is MSFT0101
while its current resource settings (CRS) property is initialized
with the guest physical address and MMIO size of the device.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>

Message-Id: <20200622140620.17229-3-eric.auger@redhat.com>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eric Auger 2020-06-22 16:06:19 +02:00 committed by Michael S. Tsirkin
parent e27e1e63ce
commit 5ab540e9b7
1 changed files with 34 additions and 0 deletions
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34
hw/arm/virt-acpi-build.c
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@ -46,6 +46,7 @@
#include "hw/pci/pci.h"
#include "hw/arm/virt.h"
#include "hw/mem/nvdimm.h"
#include "hw/platform-bus.h"
#include "sysemu/numa.h"
#include "sysemu/reset.h"
#include "sysemu/tpm.h"
@ -364,6 +365,38 @@ static void acpi_dsdt_add_power_button(Aml *scope)
aml_append(scope, dev);
}
static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms)
{
PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev);
hwaddr pbus_base = vms->memmap[VIRT_PLATFORM_BUS].base;
SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find());
MemoryRegion *sbdev_mr;
hwaddr tpm_base;
if (!sbdev) {
return;
}
tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
assert(tpm_base != -1);
tpm_base += pbus_base;
sbdev_mr = sysbus_mmio_get_region(sbdev, 0);
Aml *dev = aml_device("TPM0");
aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
Aml *crs = aml_resource_template();
aml_append(crs,
aml_memory32_fixed(tpm_base,
(uint32_t)memory_region_size(sbdev_mr),
AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
static void
build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
@ -762,6 +795,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
}
acpi_dsdt_add_power_button(scope);
acpi_dsdt_add_tpm(scope, vms);
aml_append(dsdt, scope);