Hi Louis,

The term PAL is also used for platform abstraction layer so it "could" be confusing to have this being used for something different.

Not necessarily suggesting to change anything but it might be worth considering this aspect.

Thanks, Abhishek

-----Original Message----- From: TF-A tf-a-bounces@lists.trustedfirmware.org On Behalf Of Louis Mayencourt via TF-A Sent: 19 November 2019 13:40 To: tf-a@lists.trustedfirmware.org Subject: [TF-A] Design proposal: Property Access Layer

Hi everyone,

Please let me introduce the `Property Access Layer` prototype:

The Property Access Layer (PAL) is an abstraction layer for platform specific data, allowing a "property" to be queried and a value retrieved without the requesting entity knowing what backing store is being used to hold the data. It is used to bridge new and old ways of providing platform-specific data: Today, information like the Chain of Trust is held within several, nested platform-defined tables. In the future, it may be provided as part of a device tree blob, along with the information about images to load. Introducing this abstraction layer will make migration easier and will preserve functionality for platforms that cannot / don't want to use device tree.

Please have a look at the patches: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/2559/1

Regards, Louis

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