doc: tpm: include short instructions on initializing the TPM chip

diff --git a/doc/cha-tokens.texi b/doc/cha-tokens.texi
index 331056131404e0975a997053761fb24a6d8e06d5..a956771f40d828cccfeb06a728d980b3fcb90844 100644 (file)
--- a/doc/cha-tokens.texi
+++ b/doc/cha-tokens.texi
@@ -478,7 +478,9 @@ operational differences from @acronym{PKCS} #11 module, and thus require differe
 The basic TPM operations supported and used by GnuTLS, are key generation and signing. 
 
 The next sections assume that the TPM chip in the system is already initialized and
-in a operational state.
+in a operational state. If not, ensure that the TPM chip is enabled by your BIOS,
+that the @code{tcsd} daemon is running, and that TPM ownership is set
+(by running @code{tpm_takeownership}).
 
 In GnuTLS the TPM functionality is available in @code{gnutls/tpm.h}.