[Qemu-devel] [PATCH for-3.0.x/PATCH for-3.0.1] acpi: Make TPM 2.0 with TIS available as MSFT0101

[Stefan Berger <stefanb@linux.vnet.ibm.com>]

From: Stefan Berger <stefanb@linux.ibm.com>

This is a backport of rev 24cf5413aa0 to 3.0.x and 3.1.x.

This patch makes the a TPM 2.0 with TIS interface available under the
HID 'MSF0101'. This is supported by Linux and also Windows now
recognizes the TPM 2.0 with TIS interface. Leave the TPM 1.2 as before.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/i386/acpi-build.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index e1ee8ae9e0..429d9b05e0 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2134,8 +2134,16 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
             build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
 
             if (TPM_IS_TIS(tpm_find())) {
-                dev = aml_device("ISA.TPM");
-                aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C31")));
+                if (misc->tpm_version == TPM_VERSION_2_0) {
+                    dev = aml_device("TPM");
+                    aml_append(dev, aml_name_decl("_HID",
+                                                  aml_string("MSFT0101")));
+                } else {
+                    dev = aml_device("ISA.TPM");
+                    aml_append(dev, aml_name_decl("_HID",
+                                                  aml_eisaid("PNP0C31")));
+                }
+
                 aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
                 crs = aml_resource_template();
                 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
-- 
2.20.1