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authorStefan Berger <stefanb@linux.ibm.com>2022-01-04 12:58:05 -0500
committerMichael S. Tsirkin <mst@redhat.com>2022-01-07 19:30:13 -0500
commit5903646d3913af6544680f6645fcb7296d0b3a1c (patch)
tree76e7319a3be199e37961c3df340fa3fa6649ad7a /hw/arm/virt-acpi-build.c
parentb193e5f9cccb322b0febd5a2aba48618506ed809 (diff)
downloadfocaccia-qemu-5903646d3913af6544680f6645fcb7296d0b3a1c.tar.gz
focaccia-qemu-5903646d3913af6544680f6645fcb7296d0b3a1c.zip
acpi: tpm: Add missing device identification objects
Add missing TPM device identification objects _STR and _UID. They will
appear as files 'description' and 'uid' under Linux sysfs.

Following inspection of sysfs entries for hardware TPMs we chose
uid '1'.

Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Ani Sinha <ani@anisinha.ca>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/708
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Shannon Zhao <shannon.zhaosl@gmail.com>
Message-id: 20211223022310.575496-3-stefanb@linux.ibm.com
Message-Id: <20220104175806.872996-3-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>
Diffstat (limited to 'hw/arm/virt-acpi-build.c')
-rw-r--r--hw/arm/virt-acpi-build.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index d0f4867fdf..f2514ce77c 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -229,6 +229,7 @@ static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms)
 
     Aml *dev = aml_device("TPM0");
     aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
+    aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device")));
     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 
     Aml *crs = aml_resource_template();