diff options
| author | Vadim Bendebury <vbendeb@chromium.org> | 2016-07-03 17:08:10 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-07-14 00:00:14 +0200 |
| commit | 4c0851cc37f42ed88d62b876357b71cfdaac480f (patch) | |
| tree | 096758fe9295f44382e07a5b2856182e5cd0dbd8 /src/lib/tpm2_tlcl_structures.h | |
| parent | 1ec76030edb631a1d37d6c9ad9d3791795681c11 (diff) | |
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
(TPM2_NV_WriteLock).
BRANCH=none
BUG=chrome-os-partner:50645
TEST=verified that TPM2_NV_WriteLock command is invoked before RO
firmware starts RW, and succeeds.
Change-Id: I52aa8db95b908488ec4cf0843afeb6310dc7f38b
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 2f859335dfccfeea900f15bbb8c6cb3fd5ec8c77
Original-Change-Id: I62f22b9991522d4309cccc44180a5ebd4dca488d
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/358097
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: Darren Krahn <dkrahn@chromium.org>
Reviewed-on: https://review.coreboot.org/15638
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/lib/tpm2_tlcl_structures.h')
| -rw-r--r-- | src/lib/tpm2_tlcl_structures.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/lib/tpm2_tlcl_structures.h b/src/lib/tpm2_tlcl_structures.h index 8e518583bc..1e7fcf05fa 100644 --- a/src/lib/tpm2_tlcl_structures.h +++ b/src/lib/tpm2_tlcl_structures.h @@ -59,6 +59,7 @@ struct tpm_header { #define TPM2_Clear ((TPM_CC)0x00000126) #define TPM2_NV_DefineSpace ((TPM_CC)0x0000012A) #define TPM2_NV_Write ((TPM_CC)0x00000137) +#define TPM2_NV_WriteLock ((TPM_CC)0x00000138) #define TPM2_SelfTest ((TPM_CC)0x00000143) #define TPM2_Startup ((TPM_CC)0x00000144) #define TPM2_NV_Read ((TPM_CC)0x0000014E) @@ -301,4 +302,8 @@ struct tpm2_nv_read_cmd { uint16_t offset; }; +struct tpm2_nv_write_lock_cmd { + TPMI_RH_NV_INDEX nvIndex; +}; + #endif // __SRC_LIB_TPM2_TLCL_STRUCTURES_H |