On Mon, Jan 31, 2022 at 07:04:22PM -0800, David E. Box wrote: > Intel Software Defined Silicon (SDSi) is a post manufacturing mechanism for > activating additional silicon features. Features are enabled through a > license activation process. The SDSi driver provides a per socket, sysfs > attribute interface for applications to perform 3 main provisioning > functions: > > 1. Provision an Authentication Key Certificate (AKC), a key written to > internal NVRAM that is used to authenticate a capability specific > activation payload. > > 2. Provision a Capability Activation Payload (CAP), a token authenticated > using the AKC and applied to the CPU configuration to activate a new > feature. > > 3. Read the SDSi State Certificate, containing the CPU configuration > state. > > The operations perform function specific mailbox commands that forward the > requests to SDSi hardware to perform authentication of the payloads and > enable the silicon configuration (to be made available after power > cycling). > > The SDSi device itself is enumerated as an auxiliary device from the > intel_vsec driver and as such has a build dependency on CONFIG_INTEL_VSEC. > > Link: https://github.com/intel/intel-sdsi > Signed-off-by: David E. Box <david.e.box@xxxxxxxxxxxxxxx> > Reviewed-by: Mark Gross <markgross@xxxxxxxxxx> > --- > .../ABI/testing/sysfs-driver-intel_sdsi | 77 +++ > MAINTAINERS | 5 + > drivers/platform/x86/intel/Kconfig | 12 + > drivers/platform/x86/intel/Makefile | 2 + > drivers/platform/x86/intel/sdsi.c | 571 ++++++++++++++++++ > drivers/platform/x86/intel/vsec.c | 12 +- > 6 files changed, 678 insertions(+), 1 deletion(-) > create mode 100644 Documentation/ABI/testing/sysfs-driver-intel_sdsi > create mode 100644 drivers/platform/x86/intel/sdsi.c > > diff --git a/Documentation/ABI/testing/sysfs-driver-intel_sdsi b/Documentation/ABI/testing/sysfs-driver-intel_sdsi > new file mode 100644 > index 000000000000..126978647e9b > --- /dev/null > +++ b/Documentation/ABI/testing/sysfs-driver-intel_sdsi > @@ -0,0 +1,77 @@ > +What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X > +Date: Dec 2021 > +KernelVersion: 5.17 5.17 merge window is long gone now. Please be more careful.
