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authorRijo Thomas <Rijo-john.Thomas@amd.com>2019-12-04 07:19:02 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2019-12-20 07:58:32 +0100
commit33960acccfbd7f24d443cb3d0312ac28abe62bae (patch)
tree03a0393859b080181a2d233845e56798c0fc76b9 /drivers/clk
parentcrypto: ccp - check whether PSP supports SEV or TEE before initialization (diff)
downloadlinux-33960acccfbd7f24d443cb3d0312ac28abe62bae.tar.xz
linux-33960acccfbd7f24d443cb3d0312ac28abe62bae.zip
crypto: ccp - add TEE support for Raven Ridge
Adds a PCI device entry for Raven Ridge. Raven Ridge is an APU with a dedicated AMD Secure Processor having Trusted Execution Environment (TEE) support. The TEE provides a secure environment for running Trusted Applications (TAs) which implement security-sensitive parts of a feature. This patch configures AMD Secure Processor's TEE interface by initializing a ring buffer (shared memory between Rich OS and Trusted OS) which can hold multiple command buffer entries. The TEE interface is facilitated by a set of CPU to PSP mailbox registers. The next patch will address how commands are submitted to the ring buffer. Cc: Jens Wiklander <jens.wiklander@linaro.org> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Co-developed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com> Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com> Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com> Acked-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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