u-boot.git/common/cmd_tpm.c, branch v2016.01

dm: tpm: Remove every compilation switch for TPM driver model

2015-10-23T15:42:28+00:00

As every TPM drivers support UCLASS_TPM, we can only rely on DM_TPM
functions.

This simplify a bit the code.

Signed-off-by: Christophe Ricard 
Reviewed-by: Tom Rini 
Acked-by: Simon Glass

tpm: Add a 'tpm info' command

2015-08-31T13:57:29+00:00

Add a command to display basic information about a TPM such as the model and
open/close state. This can be useful for debugging.

Signed-off-by: Simon Glass 
Acked-by: Christophe Ricard 
Reviewed-by: Heiko Schocher

tpm: Check that parse_byte_string() has data to parse

2015-08-31T13:57:28+00:00

Rather then crashing when there is no data, print an error. The error is
printed by the caller to parse_byte_string().

Acked-by: Christophe Ricard 
Signed-off-by: Simon Glass 
Reviewed-by: Heiko Schocher

tpm: Report tpm errors on the command line

2015-08-31T13:57:28+00:00

When a 'tpm' command fails, we set the return code but give no indication
of failure. This can be confusing.

Add an error message when any tpm command fails.

Signed-off-by: Simon Glass 
Acked-by: Christophe Ricard
Reviewed-by: Heiko Schocher

dm: tpm: Convert the TPM command and library to driver model

2015-08-31T13:57:28+00:00

Add driver model support to the TPM command and the TPM library. Both
support only a single TPM at present.

Signed-off-by: Simon Glass 
Acked-by: Christophe Ricard
Reviewed-by: Heiko Schocher

Add GPL-2.0+ SPDX-License-Identifier to source files

2013-07-24T13:44:38+00:00

Signed-off-by: Wolfgang Denk 
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini

tpm: add AUTH1 cmds for LoadKey2 and GetPubKey

2013-07-16T22:44:29+00:00

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 
Signed-off-by: Dirk Eibach 
Acked-by: Che-Liang Chiou 
Signed-off-by: Andy Fleming

tpm: Add TPM command library

2013-04-12T21:13:13+00:00

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

tpm: Add TPM stress test

2012-12-11T20:18:13+00:00

Add a simple command to stress-test a TPM (Trusted Platform Module).

Signed-off-by: Luigi Semenzato 

Signed-off-by: Simon Glass

Add a cli command to test the TPM device.

2011-12-06T20:30:03+00:00

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 
CC: Wolfgang Denk