TPM cleanup

firmware/lib/tpm_lite/tlcl.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /* A lightweight TPM command library.
  *
  * The general idea is that TPM commands are array of bytes whose
  * fields are mostly compile-time constant.  The goal is to build much
  * of the commands at compile time (or build time) and change some of
@@ skipping 236 matching lines @@
 }
 
 uint32_t TlclSetGlobalLock(void) {
   uint32_t x;
   VBDEBUG(("TPM: Set Set global lock\n"));
   return TlclWrite(TPM_NV_INDEX0, (uint8_t*) &x, 0);
 }
 
 uint32_t TlclExtend(int pcr_num, uint8_t* in_digest, uint8_t* out_digest) {
   struct s_tpm_extend_cmd cmd;
+  uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength];
+
   Memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd));
-  uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength];
   ToTpmUint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num);
   Memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength);
   TlclSendReceive(cmd.buffer, response, sizeof(response));
   Memcpy(out_digest, response + kTpmResponseHeaderLength, kPcrDigestLength);
   return TpmReturnCode(response);
 }
 
 uint32_t TlclGetPermissions(uint32_t index, uint32_t* permissions) {
   struct s_tpm_getpermissions_cmd cmd;
   uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
   uint8_t* nvdata;
   uint32_t result;
   uint32_t size;
 
   Memcpy(&cmd, &tpm_getpermissions_cmd, sizeof(cmd));
   ToTpmUint32(cmd.buffer + tpm_getpermissions_cmd.index, index);
   TlclSendReceive(tpm_getpermissions_cmd.buffer, response, sizeof(response));
   result = TpmReturnCode(response);
   if (result != TPM_SUCCESS) {
     return result;
   }
   nvdata = response + kTpmResponseHeaderLength + sizeof(size);
   FromTpmUint32(nvdata + kNvDataPublicPermissionsOffset, permissions);
   return result;
 }