# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 5d565bb1278301a27aa42278dcdb9093ab12bd1e
# Parent 784961057338c1313e416a9f0496939693241902
[TPM] Update the current virtual TPM documentation in misc/docs/vtpm.txt
Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxx>
---
docs/misc/vtpm.txt | 47 ++++++++++++++++++++++++++++++++++-------------
1 files changed, 34 insertions(+), 13 deletions(-)
diff -r 784961057338 -r 5d565bb12783 docs/misc/vtpm.txt
--- a/docs/misc/vtpm.txt Fri Jun 30 10:13:17 2006 +0100
+++ b/docs/misc/vtpm.txt Fri Jun 30 10:14:36 2006 +0100
@@ -1,5 +1,5 @@ Copyright: IBM Corporation (C), Intel Co
Copyright: IBM Corporation (C), Intel Corporation
-17 August 2005
+29 June 2006
Authors: Stefan Berger <stefanb@xxxxxxxxxx> (IBM),
Employees of Intel Corp
@@ -9,23 +9,33 @@ that the user is fairly familiar with co
that the user is fairly familiar with compiling and installing XEN
and Linux on a machine.
-Production Prerequisites: An x86-based machine machine with an ATMEL or
-National Semiconductor (NSC) TPM on the motherboard.
+Production Prerequisites: An x86-based machine machine with a
+Linux-supported TPM on the motherboard (NSC, Atmel, Infineon, TPM V1.2).
Development Prerequisites: An emulator for TESTING ONLY is provided
-Compiling XEN tree:
--------------------
+Compiling the XEN tree:
+-----------------------
Compile the XEN tree as usual after the following lines set in the
linux-2.6.??-xen/.config file:
-CONFIG_XEN_TPMDEV_BACKEND=y
+CONFIG_XEN_TPMDEV_BACKEND=m
+
+CONFIG_TCG_TPM=m
+CONFIG_TCG_TIS=m (supported after 2.6.17-rc4)
+CONFIG_TCG_NSC=m
+CONFIG_TCG_ATMEL=m
+CONFIG_TCG_INFINEON=m
+CONFIG_TCG_XEN=m
+<possible other TPM drivers supported by Linux>
+
+If the frontend driver needs to be compiled into the user domain
+kernel, then the following two lines should be changed.
CONFIG_TCG_TPM=y
-CONFIG_TCG_NSC=m
-CONFIG_TCG_ATMEL=m
CONFIG_TCG_XEN=y
+
You must also enable the virtual TPM to be built:
@@ -63,7 +73,7 @@ available. It works similar to making a
available. It works similar to making a network interface
available to a domain.
-kernel = "/boot/vmlinuz-2.6.12-xenU"
+kernel = "/boot/vmlinuz-2.6.x"
ramdisk = "/xen/initrd_domU/U1_ramdisk.img"
memory = 32
name = "TPMUserDomain0"
@@ -92,7 +102,7 @@ Running the TPM:
Running the TPM:
----------------
-To run the vTPM, dev device /dev/vtpm must be available.
+To run the vTPM, the device /dev/vtpm must be available.
Verify that 'ls -l /dev/vtpm' shows the following output:
crw------- 1 root root 10, 225 Aug 11 06:58 /dev/vtpm
@@ -101,16 +111,26 @@ mknod /dev/vtpm c 10 225
mknod /dev/vtpm c 10 225
Make sure that the vTPM is running in domain 0. To do this run the
-following
+following:
+
+modprobe tpmbk
/usr/bin/vtpm_managerd
Start a user domain using the 'xm create' command. Once you are in the
-shell of the user domain, you should be able to do the following:
+shell of the user domain, you should be able to do the following as
+user 'root':
-> cd /sys/devices/vtpm
+Insert the TPM frontend into the kernel if it has been compiled as a
+kernel module.
+
+> modprobe tpm_xenu
+
+Check the status of the TPM
+
+> cd /sys/devices/xen/vtpm-0
> ls
-cancel caps pcrs pubek
+[...] cancel caps pcrs pubek [...]
> cat pcrs
PCR-00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
PCR-01: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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