[edk2-platforms][PATCH V2 6/7] Platform-ARM-Morello: Add Readme.md file

["chandni cherukuri" <chandni.cherukuri@arm.com>]

This patch adds Readme.md file for Morello Platform.
The document consists of information regarding the platform,
steps to build and boot till UEFI Shell on the Morello FVP
Platform.

Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
---
 Platform/ARM/Morello/Readme.md | 46 ++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/Platform/ARM/Morello/Readme.md b/Platform/ARM/Morello/Readme.md
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+# Introduction
+
+Morello is an ARMv8-A platform that implements the capability architecture
+extension. Capability architecture specific changes will be added [here](https://git.morello-project.org/morello).
+
+The platform port in UEFI firmware provides ARMv8-A architecture enablement.
+
+Platform code is located at Platform/ARM/Morello.
+
+# Documentation
+
+Further information on Morello Platform is available at this [page](https://developer.arm.com/architectures/cpu-architecture/a-profile/morello).
+
+# Morello FVP
+
+Morello FVP can be downloaded from this [location](https://developer.arm.com/tools-and-software/open-source-software/arm-platforms-software/arm-ecosystem-fvps).
+
+# Supported Host and Toolchain
+
+- Host PC should be running Ubuntu Linux 18.04 LTS.
+- Please refer to the `edk2-platforms/Readme.md` for downloading the GCC toolchain.
+
+# Build Instructions
+
+Please refer to the `edk2-platforms/Readme.md` for build instructions.
+
+# Dependencies
+
+Once the FVP is running, the SCP will be the first to boot and will bring the AP
+core out of reset. The AP core will start executing Trusted Firmware-A at BL31
+and once it completes the execution, it will start executing UEFI.
+
+The SCP and TF-A binaries are required to boot to the UEFI Shell.
+
+## SCP Firmware
+
+The SCP firmware source code can be downloaded from this [page](https://github.com/ARM-software/SCP-firmware).
+
+Refer to the [SCP Readme](https://github.com/ARM-software/SCP-firmware/blob/master/user_guide.md)
+for building SCP firmware.
+
+## Trusted Firmware-A (TF-A)
+
+The Trusted Firmware-A source code can be downloaded from this [page](https://trustedfirmware-a.readthedocs.io/en/latest/).
+
+Refer to the [TF-A Readme](https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/tree/docs/plat/arm/morello/index.rst?h=refs/heads/master) for building TF-A.
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2.17.1