diff options
Diffstat (limited to 'firmware/lib/tpm2_lite/tlcl.c')
| -rw-r--r-- | firmware/lib/tpm2_lite/tlcl.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/firmware/lib/tpm2_lite/tlcl.c b/firmware/lib/tpm2_lite/tlcl.c index 96900b07..3b4ba480 100644 --- a/firmware/lib/tpm2_lite/tlcl.c +++ b/firmware/lib/tpm2_lite/tlcl.c @@ -168,7 +168,27 @@ uint32_t TlclContinueSelfTest(void) uint32_t TlclDefineSpace(uint32_t index, uint32_t perm, uint32_t size) { - VBDEBUG(("%s called, NOT YET IMPLEMENTED\n", __func__)); + struct tpm2_response *response; + struct tpm2_nv_define_space_cmd define_space; + + /* For backwards-compatibility, if no READ or WRITE permissions are set, + * assume readable/writeable with empty auth value. + */ + if (!(perm & TPMA_NV_MASK_WRITE)) + perm |= TPMA_NV_AUTHWRITE; + if (!(perm & TPMA_NV_MASK_READ)) + perm |= TPMA_NV_AUTHREAD; + + memset(&define_space, 0, sizeof(define_space)); + define_space.publicInfo.nvIndex = HR_NV_INDEX + index; + define_space.publicInfo.dataSize = size; + define_space.publicInfo.attributes = perm; + define_space.publicInfo.nameAlg = TPM_ALG_SHA256; + + response = tpm_process_command(TPM2_NV_DefineSpace, &define_space); + if (!response || response->hdr.tpm_code) + return TPM_E_IOERROR; + return TPM_SUCCESS; } |