On Tue, 2022-02-01 at 09:45 +0100, Greg KH wrote: > 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. > Thanks.
