tpm2: implement locking firmware rollback counter

TPM1.2 is using the somewhat misnamed tlcl_set_global_lock() command
function to lock the hardware rollback counter. For TPM2 let's
implement and use the TPM2 command to lock an NV Ram location

TEST=verified that TPM2_NV_WriteLock command is invoked before RO
     firmware starts RW, and succeeds.

Change-Id: I52aa8db95b908488ec4cf0843afeb6310dc7f38b
Signed-off-by: Martin Roth <>
Original-Commit-Id: 2f859335dfccfeea900f15bbb8c6cb3fd5ec8c77
Original-Change-Id: I62f22b9991522d4309cccc44180a5ebd4dca488d
Original-Signed-off-by: Vadim Bendebury <>
Original-Reviewed-by: Aaron Durbin <>
Original-Reviewed-by: Darren Krahn <>
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <>
5 files changed