Jeff Garzik wrote:
> Someone (hi Jesse?) should implement support for TPM_GetRandom.

Here's an example patch (compile-tested only) to get people started.

This function calls the TPM command, and returns TPM header + RNG data 
in the supplied buffer.

A hw_random driver for TPM still needs to (a) parse the TPM header for 
return code, (b) extract RNG bytes out at offset 14, and (c) figure out 
some way to get a tpm_chip pointer.

Spec at 
https://www.trustedcomputinggroup.org/specs/TPM/TCPA_Main_TCG_Architecture_v1_1b.pdf 
describes TPM_GetRandom on page 215.

	Jeff