diff options
| author | Vadim Bendebury <vbendeb@chromium.org> | 2016-06-30 20:50:49 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-07-13 23:59:18 +0200 |
| commit | 6acb9a6012de11d998716fd024a3adccbba9b5c3 (patch) | |
| tree | ce4bd142515608b48ced86a4da1e7ca5ef691fed /src/lib | |
| parent | ebba4d7c2f3e9162859d5a95c8b9597a218698d7 (diff) | |
| download | coreboot-6acb9a6012de11d998716fd024a3adccbba9b5c3.tar.xz | |
tpm2: add TPM_Clear command processing
The command is sent in session mode, but has no parameters associated
with it.
BRANCH=none
BUG=chrome-os-partner:50645
TEST=with the following patches verified that TPM_Clear command is
handled successfully by the TPM.
Change-Id: I3c9151e336084160acd3bb1f36f45b4d5efd4a33
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 503ad5e72fd5bd902325d74fd680c17c7c590e36
Original-Change-Id: Ida19e75166e1282732810cf45be21e59515d88e2
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/357973
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15634
Tested-by: build bot (Jenkins)
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@googlemail.com>
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/tpm2_marshaling.c | 14 | ||||
| -rw-r--r-- | src/lib/tpm2_tlcl_structures.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/src/lib/tpm2_marshaling.c b/src/lib/tpm2_marshaling.c index 5aad276dbb..9565aeab94 100644 --- a/src/lib/tpm2_marshaling.c +++ b/src/lib/tpm2_marshaling.c @@ -315,6 +315,15 @@ static void marshal_nv_read(void **buffer, marshal_u16(buffer, command_body->offset, buffer_space); } +/* TPM2_Clear command does not require paramaters. */ +static void marshal_clear(void **buffer, size_t *buffer_space) +{ + const uint32_t handle[] = { TPM_RH_PLATFORM }; + + marshal_common_session_header(buffer, handle, + ARRAY_SIZE(handle), buffer_space); +} + static void marshal_selftest(void **buffer, struct tpm2_self_test *command_body, size_t *buffer_space) @@ -359,6 +368,10 @@ int tpm_marshal_command(TPM_CC command, void *tpm_command_body, marshal_selftest(&cmd_body, tpm_command_body, &body_size); break; + case TPM2_Clear: + marshal_clear(&cmd_body, &body_size); + break; + default: body_size = 0; printk(BIOS_INFO, "%s:%d:Request to marshal unsupported command %#x\n", @@ -517,6 +530,7 @@ struct tpm2_response *tpm_unmarshal_response(TPM_CC command, &tpm2_resp.nvr); break; + case TPM2_Clear: case TPM2_NV_DefineSpace: case TPM2_NV_Write: /* Session data included in response can be safely ignored. */ diff --git a/src/lib/tpm2_tlcl_structures.h b/src/lib/tpm2_tlcl_structures.h index d05c564669..8e518583bc 100644 --- a/src/lib/tpm2_tlcl_structures.h +++ b/src/lib/tpm2_tlcl_structures.h @@ -56,6 +56,7 @@ struct tpm_header { } __attribute__((packed)); /* TPM command codes. */ +#define TPM2_Clear ((TPM_CC)0x00000126) #define TPM2_NV_DefineSpace ((TPM_CC)0x0000012A) #define TPM2_NV_Write ((TPM_CC)0x00000137) #define TPM2_SelfTest ((TPM_CC)0x00000143) |