Implement TlclGetPermissions, which sends a TPM2_NV_ReadPublic command
and returns the attributes of the NV Index (TPM2 Spec, Part 3, Section 31.6).
BUG=chrome-os-partner:58873
BUG=chrome-os-partner:55210
BRANCH=none
TEST=Run "tpmc def" with various permissions to define new indexes,
verify that "tpmc getp" returns matching permissions for them.
Change-Id: I2ad7163332ae8793cd717875645f19baef513b26
Reviewed-on: https://chromium-review.googlesource.com/409618
Commit-Ready: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Implement TlclDefineSpace, which sends a TPM2_NV_DefineSpace command
to define the attributes of an NV Index and cause the TPM to reserve
space to hold the data associated with the NV Index (TPM2 Spec, Part 2,
Section 31.3.1).
Also, update TlclWrite and TlclWriteLock calls to use the platform
authorization only for NV Indexes in TPM and Platform ranges, and
use empty password authorization otherwise. This allows (1) working with
the Off-Disk Early-Access Key Storage used by mount-encrypted through
Tlcl API; and (2) testing Tlcl NV define/write/write-lock operations
with platform hierarchy disabled.
BUG=chrome-os-partner:55210
BUG=chrome-os-partner:59361
BRANCH=none
TEST=After clearing the TPM owner run "tpmc def 0x800001 0x3 0x0" to
create a TPM index of size 3, which can be read and written to
with empty password. Verify that "tpmc write 0x800001 12 34 56"
succeeds and "tpmc read 0x800001 0x3" prints "12 34 56" as NVRAM
space contents.
Change-Id: I185cf8380ef1579d0e9e4d8cead5a30ceda3ead9
Reviewed-on: https://chromium-review.googlesource.com/405792
Commit-Ready: Andrey Pronin <apronin@chromium.org>
Tested-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@google.com>
mount-encrypted needs to be aware of TPM ownership status, and
will also want to issue a read lock for the early access NVRAM
index.
BRANCH=none
BUG=chromium:625037
TEST=mount-encrypted shows ownership at boot with kevin
Change-Id: I42f43f91d892137e1c46c7cacd88e3b749ce7f04
Reviewed-on: https://chromium-review.googlesource.com/366443
Commit-Ready: Andrey Pronin <apronin@chromium.org>
Tested-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Andrey Pronin <apronin@chromium.org>
Build a special version of TPM Lightweight Command Library in
libvboot_host for TPM2. Create the framework for implementation, stub
functions for now. libvboot_host is used by tpmc and other user-space
utilities that talk directly to tpm bypassing trunks/trousers.
BRANCH=none
BUG=chrome-os-partner:54981
BUG=chrome-os-partner:55210
TEST=Boot on kevin, verify that 'tpmc read' works.
Change-Id: I4cc41028041193041defc319687697eb9edb1f3e
Reviewed-on: https://chromium-review.googlesource.com/358623
Commit-Ready: Andrey Pronin <apronin@chromium.org>
Tested-by: Stephen Barber <smbarber@chromium.org>
Tested-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
The firmware needs to lock the kernel rollback index before starting
up the kernel. The TPM2_NV_WriteLock command is used for that.
We also want to limit the amount of control the user space apps have
over TPM. With TPM1.2 it was achieved by deasserting physical
presence. TPM2 specification allows to achieve the same goal by
disabling Platform Hierarchy, which is active out of reset.
BRANCH=none
BUG=chrome-os-partner:50465
TEST=verified that all commands succeed and chrome OS boots up fine.
Change-Id: Ia5893460e0b29f1945cb2aae45a5f10b08fe1ed1
Reviewed-on: https://chromium-review.googlesource.com/358351
Commit-Ready: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Darren Krahn <dkrahn@chromium.org>
The latest TPM specification uses different command codes, command
structures and return codes.
Let's put definitions for different TPM versions into different
include files.
CQ-DEPEND=CL:357831
BRANCH=none
BUG=chrome-os-partner:50645
TEST=with the rest of the patches applied kevin/gru boards boot into
chrome OS with rollback counters read from/written to TPM2
Change-Id: Ie13696d4e5098a4ea5e338e84334d257e5c704a7
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/356751
Reviewed-by: Randall Spangler <rspangler@chromium.org>
