[PATCH v8 0/4] Introduce TEE based Trusted Keys support
sumit.garg at linaro.org
Tue Dec 8 06:51:53 EST 2020
Apologies for the delay in my response as I was busy with other high
On Fri, 4 Dec 2020 at 10:46, Jarkko Sakkinen <jarkko at kernel.org> wrote:
> On Fri, Nov 06, 2020 at 04:52:52PM +0200, Jarkko Sakkinen wrote:
> > On Fri, Nov 06, 2020 at 03:02:41PM +0530, Sumit Garg wrote:
> > > On Thu, 5 Nov 2020 at 10:37, Jarkko Sakkinen <jarkko at kernel.org> wrote:
> > > >
> > > > On Tue, Nov 03, 2020 at 09:31:42PM +0530, Sumit Garg wrote:
> > > > > Add support for TEE based trusted keys where TEE provides the functionality
> > > > > to seal and unseal trusted keys using hardware unique key. Also, this is
> > > > > an alternative in case platform doesn't possess a TPM device.
> > > > >
> > > > > This patch-set has been tested with OP-TEE based early TA which is already
> > > > > merged in upstream .
> > > >
> > > > Is the new RPI400 computer a platform that can be used for testing
> > > > patch sets like this? I've been looking for a while something ARM64
> > > > based with similar convenience as Intel NUC's, and on the surface
> > > > this new RPI product looks great for kernel testing purposes.
> > >
> > > Here  is the list of supported versions of Raspberry Pi in OP-TEE.
> > > The easiest approach would be to pick up a supported version or else
> > > do an OP-TEE port for an unsupported one (which should involve minimal
> > > effort).
> > >
> > >  https://optee.readthedocs.io/en/latest/building/devices/rpi3.html#what-versions-of-raspberry-pi-will-work
> > >
> > > -Sumit
> > If porting is doable, then I'll just order RPI 400, and test with QEMU
> > up until either I port OP-TEE myself or someone else does it.
> > For seldom ARM testing, RPI 400 is really convenient device with its
> > boxed form factor.
> I'm now a proud owner of Raspberry Pi 400 home computer :-)
> I also found instructions on how to boot a custom OS from a USB stick:
> Also, my favorite build system BuildRoot has bunch of of the shelf
> ➜ buildroot-sgx (master) ✔ ls -1 configs | grep raspberry
> I.e. I'm capable of compiling kernel and user space and boot it up
> with it.
> Further, I can select this compilation option:
> BR2_TARGET_OPTEE_OS: │
> OP-TEE OS provides the secure world boot image and the trust │
> application development kit of the OP-TEE project. OP-TEE OS │
> also provides generic trusted application one can embedded │
> into its system. │
> Is that what I want? If I put this all together and apply your patches,
> should the expectation be that I can use trusted keys?
Firstly you need to do an OP-TEE port for RPI 400 (refer here  for
guidelines). And then in order to boot up OP-TEE on RPI 400, you can
refer to Raspberry Pi 3 build instructions .
> Please note that I had a few remarks about your patches (minor but need
> to be fixed), but this version is already solid enough for testing.
Sure, I will incorporate your remarks and Randy's documentation
comments in the next version.
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