Commit Graph

5 Commits

Author SHA1 Message Date
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Reinhard Pfau
be6c1529c1 tpm: add AUTH1 cmds for LoadKey2 and GetPubKey
Extend the tpm library with support for single authorized (AUTH1) commands
as specified in the TCG Main Specification 1.2. (The internally used helper
functions are implemented in a way that they could also be used for double
authorized commands if someone needs it.)

Provide enums with the return codes from the TCG Main specification.

For now only a single OIAP session is supported.

OIAP authorized version of the commands TPM_LoadKey2 and TPM_GetPubKey are
provided. Both features are available using the 'tpm' command, too.

Authorized commands are enabled with CONFIG_TPM_AUTH_SESSIONS. (Note that
this also requires CONFIG_SHA1 to be enabled.)

Signed-off-by: Reinhard Pfau <reinhard.pfau@gdsys.cc>
Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Acked-by: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-07-16 17:44:29 -05:00
Che-liang Chiou
8732b0700d tpm: Add TPM command library
TPM command library implements a subset of TPM commands defined in TCG
Main Specification 1.2 that are useful for implementing secure boot.
More TPM commands could be added out of necessity.

You may exercise these commands through the 'tpm' command.  However, the
raw TPM commands are too primitive for writing secure boot in command
interpreter scripts; so the 'tpm' command also provides helper functions
to make scripting easier.

For example, to define a counter in TPM non-volatile storage and
initialize it to zero:

$ tpm init
$ tpm startup TPM_ST_CLEAR
$ tpm nv_define d 0x1001 0x1
$ tpm nv_write d 0x1001 0

And then increment the counter by one:

$ tpm nv_read d 0x1001 i
$ setexpr.l i $i + 1
$ tpm nv_write d 0x1001 $i

Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
2013-04-12 14:13:13 -07:00
Luigi Semenzato
eea3f4d3e1 tpm: Add TPM stress test
Add a simple command to stress-test a TPM (Trusted Platform Module).

Signed-off-by: Luigi Semenzato <semenzato@chromium.org>

Signed-off-by: Simon Glass <sjg@chromium.org>
2012-12-11 13:18:13 -07:00
Vadim Bendebury
576fb1ed3f Add a cli command to test the TPM device.
The command gets an arbitrary number of arguments (up to 30), which
are interpreted as byte values and are feed into the TPM device after
proper initialization. Then the return value and data of the TPM
driver is examined.

TPM commands are described in the TCG specification.

For instance, the following sequence is the 'TPM Startup' command, it
is processed by the TPM and a response is generated:

boot > tpm 0x0 0xc1 0x0 0x0 0x0 0xc 0x0 0x0 0x0 0x99 0x0 0x1
Found TPM SLB9635 TT 1.2 by Infineon
Got TPM response:
 00 c4 00 00 00 0a 00 00 00 00

If the command is corrupted (fed one byte short), an error is reported:
boot > tpm 0x0 0xc1 0x0 0x0 0x0 0xc 0x0 0x0 0x0 0x99 0x0
generic_lpc_tpm.c:311 unexpected TPM status 0xff000888
generic_lpc_tpm.c:516 failed sending data to TPM
tpm command failed
boot >

Change-Id: I3f3c5bfec8b852e208c4e99ba37b0f2b875140b0
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
CC: Wolfgang Denk <wd@denx.de>
2011-12-06 21:30:03 +01:00