Re: IMA fails to see TPM chip (rpi3, linaro optee)

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On Tue, 2019-02-26 at 20:09 +0200, Jarkko Sakkinen wrote:
> On Tue, Feb 26, 2019 at 09:04:38AM -0500, Mimi Zohar wrote:
> > Hi Ard, thank you for responding.  The clk not being initialized early
> > enough has been a problem for years.  Because of the clk not being
> > initialized, the TPM initialization is deferred, causing IMA to go
> > into TPM-bypass mode.
> 
> I'd guess this is an SPI issue and not really something that TPM could
> resolve? Please correct me if I'm wrong. I.e. SPI gets initialized after
> IMA.
> 

Peter's original post with some debugging is here:
https://lore.kernel.org/linux-integrity/trinity-3e6c2430-417d-4eef-b067-e30d68592b4d-1506716047790@3c-app-gmx-bs69/




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