diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index ca31f70f7f..1384a2cf2a 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -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);