On 12/02/2014 05:31 PM, Jarkko Sakkinen wrote:
+
+/**
+ * tpm2_startup() - send startup command to the TPM chip
+ * @chip: TPM chip to use.
+ * @startup_type startup type. The value is either
+ * TPM_SU_CLEAR or TPM_SU_STATE.
+ *
+ * 0 is returned when the operation is successful. If a negative number is
+ * returned it remarks a POSIX error code. If a positive number is returned
+ * it remarks a TPM error.
+ */
+int tpm2_startup(struct tpm_chip *chip, __be16 startup_type)
+{
+ struct tpm2_cmd cmd;
+
+ cmd.header.in = tpm2_startup_header;
+
+ cmd.params.startup_in.startup_type = startup_type;
+ return tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
+ "attempting to start the TPM");
+}
I suppose you need to send this command because your firmware does not
do it ?Following TPM1.2 I guess the BIOS / UEFI should send this instead
and sending it later would actually be wrong. Hm, I don't find from
where you are calling this... do you need it ? Can you remove it?
Stefan
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