If VbInit() is instructed to look at a virtual dev-mode switch, then it will
use value contained in the TPM's firmware space instead of a hardware GPIO
to determine if developer mode is enabled.
This change just makes it look. It doesn't provide a way to actually set
the value in the TPM. VbInit() isn't being told to look yet, either. Those
changes are coming.
BUG=chrome-os-partner:9706
TEST=none
The usual sanity-check applies:
make
make runtests
But to actually test that this stuff is working IRL requires special tweaks
to other components and monitoring the serial debug output from both EC and
CPU. We'll save the hands-on tests for when it's all done.
Change-Id: Ie485ad2180224e192238bf2a5dbf95bbcb9130f9
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/23067
Reviewed-by: Randall Spangler <rspangler@chromium.org>
BUG=chrome-os-partner:9707
TEST=manual
make
make runtests
You can also test it by clearing the TPM, then manually looking at the TPM
regions. In dev-mode, clear the regions and you'll see something like this:
localhost ~ # tpmc read 1007 a
1 0 0 0 0 0 0 0 0 0
localhost ~ # tpmc read 1008 d
1 4c 57 52 47 0 0 0 0 0 0 0 0
localhost ~ #
Go back to normal mode and reboot, and you'll see something like this:
localhost ~ # tpmc read 1007 a
2 0 1 0 1 0 0 0 0 4f
localhost ~ # tpmc read 1008 d
2 4c 57 52 47 1 0 1 0 0 0 0 55
localhost ~ #
The important things are that the first number is now 2, instead of 1, and
the last number is not zero (it's a checksum, so it'll vary depending on the
other numbers, which will themselves vary according to the firmware and
kernel versions).
Change-Id: Ia4040311c2a4b2819792549b883377c8b6b89d48
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/22856
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Try #2, now that ARM has the fix from http://gerrit.chromium.org/gerrit/4667
This cleans up the TPM calls inside vboot_reference.
* TPM calls share mode code between boot modes.
* Better handling for TPM_E_MUST_REBOOT, particularly in recovery mode.
* TAB screen shows current TPM versions.
No changes required to the wrapper API; these changes are internal to vboot.
BUG=chromium-os:18084
TEST=make && make runtests; built for both alex and tegra2-seaboard
Original-Change-Id: I2a52066f2889210af83409872b10f9d6380470af
(cherry picked from commit da55560cddcf7a1aa8a881cdf52792a21a01e766)
Change-Id: I120797145772116f09b8125b9e56fdbb11dc16b3
Reviewed-on: http://gerrit.chromium.org/gerrit/4671
Tested-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This cleans up the TPM calls inside vboot_reference.
* TPM calls share mode code between boot modes.
* Better handling for TPM_E_MUST_REBOOT, particularly in recovery mode.
* TAB screen shows current TPM versions.
No changes required to the wrapper API; these changes are internal to vboot.
BUG=chromium-os:18084
TEST=make && make runtests; built for both alex and tegra2-seaboard
Change-Id: I2a52066f2889210af83409872b10f9d6380470af
Reviewed-on: http://gerrit.chromium.org/gerrit/4611
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Gaurav Shah <gauravsh@chromium.org>
Tested-by: Randall Spangler <rspangler@chromium.org>
Changed TlclRead / TlclWrite to take void* / const void* to reduce typecasts.
Much restructuring of rollback_index.c.
Fixed a version-packing bug in rollback_index.c (& --> |)
BUG:chrome-os-partner:304
TEST:manual testing of all code flows on CRB
Review URL: http://codereview.chromium.org/3084030
This code compiles and installs using a modified ebuild (which needs to be committed after this change).
Review URL: http://codereview.chromium.org/2857030
