atp: fix failing test_readme

Test failed because there was no reference to maintainers in the
meta-atp README.

Following the common structure of other layers in the meta-arm
repository, the README in meta-atp now refers to the top-level README,
and a documentation directory contains the guidance that was present in
the original meta-atp README.

Signed-off-by: Adrián Herrera Arcila <adrian.herrera@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

README.md

@@ -20,7 +20,7 @@ This repository contains the Arm layers for OpenEmbedded.
 
 * meta-atp
 
-  This layer contains recipes for the Adaptive Traffic Generation integration into meta-gem5.
+  This layer contains recipes for the [AMBA Adaptive Traffic Profiles (ATP)](https://developer.arm.com/documentation/ihi0082/latest) generation integration into meta-gem5.
 
 * meta-gem5
 

meta-atp/README.md

@@ -1,76 +1 @@
-# meta-atp layer
-
-The meta-atp layer supports building environments with traffic generation capabilities based on [AMBA Adaptive Traffic Profiles (ATP)](https://developer.arm.com/documentation/ihi0082/latest).
-
-## Recipes
-
-The meta-atp layer supports building the following software components:
-
-- Arm's implementation of the AMBA ATP specification, namely the [AMBA ATP Engine](https://github.com/ARM-software/ATP-Engine).
-- Linux kernel modules and user API (UAPI) for programming ATP devices.
-- Integration test suite for verification of kernel modules and UAPI.
-
-It is also possible to build the AMBA ATP Engine as part of the final [gem5](https://www.gem5.org/) executable. For this, meta-atp extends the `gem5-aarch64-native` recipe to add the AMBA ATP engine code as extra sources.
-
-## Machines
-
-The `gem5-atp-arm64` machine extends the `gem5-arm64` machine to instantiate a simulated platform with support for programmable AMBA ATP traffic generation. The platform includes the following models:
-
-- `ProfileGen` model. This is the adapter layer between gem5 and the AMBA ATP Engine. It is the source of traffic into the gem5 host platform.
-- `ATPDevice` model. Software can program it using the Linux kernel modules and UAPI to control traffic generation.
-
-## Usage
-
-Users should add the meta-atp layer and layer dependencies to `conf/bblayers.conf`. See `conf/layer.conf` for dependencies.
-
-### Standalone Engine executable
-
-Users can build the AMBA ATP Engine as a standalone native executable as follows:
-
-```bash
-bitbake atp-native
-```
-
-Users can run the executable through standard build scripts:
-
-```bash
-oe-run-native atp-native atpeng [--help | args...]
-```
-
-## Integration of the Engine in gem5
-
-Users should select the `gem5-atp-arm64` platform in their `conf/local.conf` file.
-
-Users can build the target image of preference, for example:
-
-```bash
-bitbake core-image-minimal
-```
-
-The resulting gem5 native executable contains the AMBA ATP Engine. The resulting target image contains the kernel modules, UAPI and test suite.
-
-Users should run the environment as follows:
-
-```bash
-./tmp/deploy/tools/start-gem5-atp.sh
-```
-
-This script launches a fast simulation to fast-forward Linux boot. Once Linux boot is completed, the fast simulation switches into a detailed simulation for the final usable environment. Users can connect and interact with the environment as follows:
-
-```bash
-oe-run-native gem5-m5term-native m5term <PORT>
-```
-
-The connection PORT is announced by the deploy script as:
-
-```bash
-system.terminal: Listening for connections on port <PORT>
-```
-
-This is usually port 3456.
-
-Users can verify access to the ATP device by running the integration test suite from within the simulated environment as follows:
-
-```bash
-test_atp.out
-```
+See ../README.md

meta-atp/documentation/atp-standalone.md

@@ -0,0 +1,13 @@
+# Standalone ATP Engine executable
+
+Users can build the AMBA ATP Engine as a standalone native executable as follows:
+
+```bash
+bitbake atp-native
+```
+
+Users can run the executable through standard build scripts:
+
+```bash
+oe-run-native atp-native atpeng [--help | args...]
+```

meta-atp/documentation/gem5-atp-arm64.md

@@ -0,0 +1,37 @@
+## ATP Engine integration in gem5, and the gem5-atp-arm64 machine
+
+Users should select the `gem5-atp-arm64` machine in their `conf/local.conf` file.
+
+Users can build the target image of preference, for example:
+
+```bash
+bitbake core-image-minimal
+```
+
+The resulting gem5 native executable contains the AMBA ATP Engine. The resulting target image contains the kernel modules, UAPI and test suite.
+
+Users should run the environment as follows:
+
+```bash
+./tmp/deploy/tools/start-gem5-atp.sh
+```
+
+This script launches a fast simulation to fast-forward Linux boot. Once Linux boot is completed, the fast simulation switches into a detailed simulation for the final usable environment. Users can connect and interact with the environment as follows:
+
+```bash
+oe-run-native gem5-m5term-native m5term <PORT>
+```
+
+The connection PORT is announced by the deploy script as:
+
+```bash
+system.terminal: Listening for connections on port <PORT>
+```
+
+This is usually port 3456.
+
+Users can verify access to the ATP device by running the integration test suite from within the simulated environment as follows:
+
+```bash
+test_atp.out
+```

meta-atp/documentation/summary.md

@@ -0,0 +1,11 @@
+# meta-atp summary
+
+The meta-atp layer supports building the following software components:
+
+- Arm's implementation of the AMBA ATP specification, namely the [AMBA ATP Engine](https://github.com/ARM-software/ATP-Engine).
+- Linux kernel modules and user API (UAPI) for programming ATP devices.
+- Integration test suite for verification of kernel modules and UAPI.
+
+It is also possible to build the AMBA ATP Engine as part of the final [gem5](https://www.gem5.org/) executable. For this, meta-atp extends the `gem5-aarch64-native` recipe to add the AMBA ATP engine code as extra sources.
+
+Users should add the meta-atp layer and layer dependencies to `conf/bblayers.conf`. See `conf/layer.conf` for dependencies.