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REF:https://github.com/tianocore/edk2/issues/10529 The `RngPei` PEIM can be used if RNG should be provided over a dynamic binary interface to other PEIMs on a platform. Tested with: - SecurityPkg CI - Verify RNG linked with RngLib is executed as expected - Verify random numbers are generated successfully with a valid RngLib Integration instructions: Use the `RngPei` module if a platform needs to produce `gEfiRngPpiGuid`. The platform should usually link a different `RngLib` instance to `RngPei` than other PEIMs that may use the RNG PPI produced since `RngPei` is responsible for producing the PPI. For example, a `RngLib` instance that uses the rdrand instruction may be linked against `RngPei` and a `RngLib` instance that uses the RNG PPI may be linked against other PEIMs. Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>