Add resume command (TPM_Startup(ST_STATE))

Change-Id: Ia85c3cdbcb74c6cd8e7bd53c51eaccc98b13677e

BUG=
TEST=

Review URL: http://codereview.chromium.org/3232006

3 files changed, 16 insertions, 1 deletions

diff --git a/firmware/lib/tpm_lite/include/tlcl.h b/firmware/lib/tpm_lite/include/tlcl.h
index c3f73737..09ccb9f2 100644
--- a/firmware/lib/tpm_lite/include/tlcl.h
+++ b/firmware/lib/tpm_lite/include/tlcl.h
@@ -52,7 +52,12 @@ void TlclSetLogLevel(int level);
  */
 uint32_t TlclStartup(void);
 
-/* Run the self test.  Note---this is synchronous.  To run this in parallel
+/* Resumes by sending a TPM_Startup(ST_STATE).  The TPM error code is returned
+ * (0 for success).
+ */
+uint32_t TlclResume(void);
+
+/* Runs the self test.  Note---this is synchronous.  To run this in parallel
  * with other firmware, use ContinueSelfTest.  The TPM error code is returned.
  */
 uint32_t TlclSelfTestFull(void);
diff --git a/firmware/lib/tpm_lite/include/tlcl_structures.h b/firmware/lib/tpm_lite/include/tlcl_structures.h
index 51f461e5..53d6bdd6 100644
--- a/firmware/lib/tpm_lite/include/tlcl_structures.h
+++ b/firmware/lib/tpm_lite/include/tlcl_structures.h
@@ -59,6 +59,11 @@ struct s_tpm_selftestfull_cmd{
 } tpm_selftestfull_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, },
 };
 
+struct s_tpm_resume_cmd{
+  uint8_t buffer[12];
+} tpm_resume_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, },
+};
+
 struct s_tpm_startup_cmd{
   uint8_t buffer[12];
 } tpm_startup_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, },
diff --git a/firmware/lib/tpm_lite/tlcl.c b/firmware/lib/tpm_lite/tlcl.c
index 2bbb20dc..3f314df7 100644
--- a/firmware/lib/tpm_lite/tlcl.c
+++ b/firmware/lib/tpm_lite/tlcl.c
@@ -101,6 +101,11 @@ uint32_t TlclStartup(void) {
   return Send(tpm_startup_cmd.buffer);
 }
 
+uint32_t TlclResume(void) {
+  VBDEBUG(("TPM: Resume\n"));
+  return Send(tpm_resume_cmd.buffer);
+}
+
 uint32_t TlclSelfTestFull(void) {
   VBDEBUG(("TPM: Self test full\n"));
   return Send(tpm_selftestfull_cmd.buffer);