Re: [Qemu-devel] [PATCH] acpi: Make TPM 2.0 with TIS available as MSFT0101

[Igor Mammedov <imammedo@redhat.com>]

On Fri, 25 Jan 2019 16:00:58 -0500
Stefan Berger <stefanb@linux.ibm.com> wrote:

> 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: 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 2e21a31f82..f51225b4a7 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,