tpm: Add TPM command library
authorChe-liang Chiou <clchiou@chromium.org>
Thu, 28 Feb 2013 09:34:57 +0000 (09:34 +0000)
committerSimon Glass <sjg@chromium.org>
Fri, 12 Apr 2013 21:13:13 +0000 (14:13 -0700)
commit8732b0700d21588b4954d0f1b182f4c60725d228
treeb5c693899b28ac13789e8957114b12af4d946769
parentc1af608f6f22d58ec27b1f6ba9841d1baf12cc98
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>
common/cmd_tpm.c
include/tis.h [new file with mode: 0644]
include/tpm.h
lib/Makefile
lib/tpm.c [new file with mode: 0644]