diff options
Diffstat (limited to 'src/tcgbios.c')
| -rw-r--r-- | src/tcgbios.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/tcgbios.c b/src/tcgbios.c index 5475535a..10f8ba50 100644 --- a/src/tcgbios.c +++ b/src/tcgbios.c @@ -591,16 +591,22 @@ tpm_extend(struct tpm_log_entry *le, int digest_len) static int tpm20_stirrandom(void) { - struct tpm2b_stir stir = { + struct tpm2_req_stirrandom stir = { + .hdr.tag = cpu_to_be16(TPM2_ST_NO_SESSIONS), + .hdr.totlen = cpu_to_be32(sizeof(stir)), + .hdr.ordinal = cpu_to_be32(TPM2_CC_StirRandom), .size = cpu_to_be16(sizeof(stir.stir)), .stir = rdtscll(), }; /* set more bits to stir with */ stir.stir += swab64(rdtscll()); - int ret = tpm_build_and_send_cmd(0, TPM2_CC_StirRandom, - (u8 *)&stir, sizeof(stir), - TPM_DURATION_TYPE_SHORT); + struct tpm_rsp_header rsp; + u32 resp_length = sizeof(rsp); + int ret = tpmhw_transmit(0, &stir.hdr, &rsp, &resp_length, + TPM_DURATION_TYPE_SHORT); + if (ret || resp_length != sizeof(rsp) || rsp.errcode) + ret = -1; dprintf(DEBUG_tcg, "TCGBIOS: Return value from sending TPM2_CC_StirRandom = 0x%08x\n", ret); |