From fcaa204194e15ba24cd53087dd616aabbc29e64f Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Thu, 5 Mar 2020 17:51:46 +0100 Subject: [PATCH] docs/specs/tpm: Document TPM_TIS sysbus device for ARM Update the documentation with recent changes related to the sysbus TPM_TIS device addition and add the command line to be used with arm VIRT. Signed-off-by: Eric Auger Reviewed-by: Stefan Berger Message-id: 20200305165149.618-8-eric.auger@redhat.com Signed-off-by: Stefan Berger --- docs/specs/tpm.rst | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/docs/specs/tpm.rst b/docs/specs/tpm.rst index 2bdf637f55..da9eb39ca9 100644 --- a/docs/specs/tpm.rst +++ b/docs/specs/tpm.rst @@ -18,9 +18,15 @@ The TIS interface makes a memory mapped IO region in the area 0xfed40000-0xfed44fff available to the guest operating system. QEMU files related to TPM TIS interface: - - ``hw/tpm/tpm_tis.c`` + - ``hw/tpm/tpm_tis_common.c`` + - ``hw/tpm/tpm_tis_isa.c`` + - ``hw/tpm/tpm_tis_sysbus.c`` - ``hw/tpm/tpm_tis.h`` +Both an ISA device and a sysbus device are available. The former is +used with pc/q35 machine while the latter can be instantiated in the +ARM virt machine. + CRB interface ------------- @@ -325,6 +331,23 @@ In case a pSeries machine is emulated, use the following command line: -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0 \ -drive file=test.img,format=raw,if=none,id=drive-virtio-disk0 +In case an ARM virt machine is emulated, use the following command line: + +.. code-block:: console + + qemu-system-aarch64 -machine virt,gic-version=3,accel=kvm \ + -cpu host -m 4G \ + -nographic -no-acpi \ + -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock \ + -tpmdev emulator,id=tpm0,chardev=chrtpm \ + -device tpm-tis-device,tpmdev=tpm0 \ + -device virtio-blk-pci,drive=drv0 \ + -drive format=qcow2,file=hda.qcow2,if=none,id=drv0 \ + -drive if=pflash,format=raw,file=flash0.img,readonly \ + -drive if=pflash,format=raw,file=flash1.img + + On ARM, ACPI boot with TPM is not yet supported. + In case SeaBIOS is used as firmware, it should show the TPM menu item after entering the menu with 'ESC'. -- 2.11.4.GIT