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| author | Aseda Aboagye <aaboagye@google.com> | 2017-02-21 17:12:35 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-02-27 18:50:12 -0800 |
| commit | 2a7683af41a65907ed81f4a448390c5d0b09cedc (patch) | |
| tree | eb482f4b6c68da76e7aca732856346236b1746a6 /include | |
| parent | ec98dbfb35bb22bb6b9096eceedda93c9f88f85c (diff) | |
| download | chrome-ec-2a7683af41a65907ed81f4a448390c5d0b09cedc.tar.gz | |
cr50: Store console lock state in NvMem vars.
This commit enables the use of the nvmem vars module. The console lock
state is migrated from using the long life scratch register, to nvmem
vars instead which will persist across power on reboots.
BUG=b:35586145
BRANCH=None
TEST=Flash a dev image. Lock the console. Remove all power from the
system. Power on system and verify that console is still locked.
Unlock the console, remove power from the system, power on the system,
verify that the console is now unlocked.
TEST=Repeat the above test, but using the nvtestvar console command
instead.
Change-Id: I03a2098bb0017cfca59889457a332eafb0e95db6
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/445804
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/tpm_registers.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/tpm_registers.h b/include/tpm_registers.h index 9d5fba4cf5..9812c7c131 100644 --- a/include/tpm_registers.h +++ b/include/tpm_registers.h @@ -43,6 +43,14 @@ void tpm_register_interface(interface_restart_func interface_restart); int tpm_reset_request(int wait_until_done, int wipe_nvmem_first); /* + * Tell the TPM task to re-enable nvmem commits. + * + * NOTE: This function is NOT to be used freely, but only meant to be used in + * exceptional cases such as unlocking the console following a TPM wipe. + */ +void tpm_reinstate_nvmem_commits(void); + +/* * This structure describes the header of all commands and responses sent and * received over TPM FIFO. * |