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[PULL,19/25] acpi: Make TPM 2.0 with TIS available as MSFT0101

Message ID 20190204142638.27021-20-mst@redhat.com
State New
Headers show
Series [PULL,01/25] virtio: add checks for the size of the indirect table | expand

Commit Message

Michael S. Tsirkin Feb. 4, 2019, 2:43 p.m. UTC 
From: Stefan Berger <stefanb@linux.ibm.com>

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(-)
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Patch

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index d60603abd7..26cef4af2d 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2141,8 +2141,16 @@  build_dsdt(GArray *table_data, BIOSLinker *linker,
             build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
 
             if (TPM_IS_TIS(tpm)) {
-                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,