pub unsafe extern "C" fn Tss2_Sys_FieldUpgradeStart_Prepare(
sysContext: *mut TSS2_SYS_CONTEXT,
authorization: TPMI_RH_PLATFORM,
keyHandle: TPMI_DH_OBJECT,
fuDigest: *const TPM2B_DIGEST,
manifestSignature: *const TPMT_SIGNATURE
) -> TSS2_RC