Define SDM capabilities

[flit]

Use this issue to discuss and define the initial set of capabilities which can be used in the manifest.

As a reminder, capabilities are expressed through feature elements within the manifest. Example:

  <capabilities>
    <feature name="debug-architecture:adiv5" enable="true" value="foo"/>
    <feature name="debug-architecture:adiv6" enable="true"/>
    <feature name="resume-boot" enable="true"/>
    <feature name="multiple-authentications" enable="true"/>
  </capabilities>

Starting point:

• debug-architecture:adiv5: SDM supports the Arm ADIv5 architecture.
• debug-architecture:adiv6: SDM supports the Arm ADIv6 architecture.
• resume-boot: SDM supports the SDMResumeBoot API.
• multiple-authentications: SDM supports more than one call to SDMAuthenticate in a given session.
  • Is this even useful?
• authentication-safe-resets: Value is a bitmask indicating which reset types are safe to use without losing authentication.
  • Bit 0 is hw reset
  • Bit 1 is sw reset