infra/rdv1: add user guide for rd-v1 platform

Add the initial user guide for the RD-V1 platform software stack. The
user guide points to documents that provide information about obtaining
the platform software stack and using the various features it supports.
A table to list the release tags is included as well.

Signed-off-by: Aditya Angadi <aditya.angadi@arm.com>
Change-Id: Iec4dcba16aedf98916078473dfc21288917cce3c

docs/infra/rdv1/readme.rst

+RD-V1 platform software user guide
+==================================
+
+.. contents::
+
+
+Introduction
+------------
+
+RD (Reference Design) is a collection of resources to provide a representative
+view of typical compute subsystems that can be designed and implemented using
+specific generations of Arm IP. RD-V1 in particular is based on the following
+hardware configuration.
+
+- 32xMP1 Neoverse V1 CPUs
+- CMN-650 interconnect
+- Multiple AXI expansion ports for I/O Coherent PCIe, Ethernet, offload
+- Arm Cortex-M7 for System Control Processor (SCP) and
+  Manageability Control Processor (MCP)
+
+The Fixed Virtual Platform of RD-V1 supports 16xMP1 Neoverse V1 CPUs.
+
+RD-V1 also comes in a multi-chip variant called RD-V1-MC. The user-guide for
+RD-V1-MC can be obtained form '`here`_'
+
+This document is a user guide on how to setup, build and run the RD-V1 software
+stack on the Fixed Virtual Platform.
+
+
+Setting up the Host Machine and Syncing the software stack
+----------------------------------------------------------
+
+Host Machine requirements and the necessary steps to be followed to sync the
+software stack are listed on '`Download sources`_' page.
+
+
+Obtaining the RD-V1 Fast Model
+------------------------------
+
+The latest version of RD-V1 Fast Model can be requested by sending a email to
+Arm at this email address: `support-connect@arm.com <mailto:support-connect@arm.com>`_.
+
+Follow the instruction in the installer and setup the FVP. Typically, the
+installer will ask to create a new folder in the home directory. You can either
+install the FVP in the home folder, or in the ``fastmodel/refinfra`` folder
+inside the workspace. If you would like to install in the ``fastmodel/refinfra``
+folder, when asked for the install location, provide the absolute path of the
+``fastmodel/refinfra``.
+
+
+Supported Features by RD-V1 platform software stack
+---------------------------------------------------
+
+RD-V1 platform software stack supports the following features.
+
+- `Busybox Boot`_
+- `Buildroot Boot`_
+- `Linux Distribution Boot`_
+- `ACS Compliance Test`_
+- `UEFI Secure Boot`_
+- `Virtualization`_
+
+
+Follow the links above for detailed information about the build and execute
+steps for each of the supported features.
+
+
+Release Tags
+------------
+
+Table below lists the release tags for the RD-V1 platform software stack and
+the corresponding RD-V1 FVP version that is recommended to be used along
+with the listed release tag. The summary of the changes introduced and tests
+validated in each release is listed in `change log`_.
+
++-----------------------+-------------------------+
+|     Release Tag       |    RD-V1 FVP Version    |
++=======================+=========================+
+|  RD-INFRA-2021.02.24  |       11.13.43          |
++-----------------------+-------------------------+
+
+
+--------------
+
+*Copyright (c) 2020-2021, Arm Limited. All rights reserved.*
+
+.. _Busybox Boot: docs/infra/common/busybox-boot.rst
+.. _Buildroot Boot: docs/infra/common/buildroot-boot.rst
+.. _Linux Distribution Boot: docs/infra/common/distro-boot.rst
+.. _ACS Compliance Test: docs/infra/common/acs-test.rst
+.. _UEFI Secure Boot: docs/infra/common/secure-boot.rst
+.. _Virtualization: docs/infra/common/virtualization.rst
+.. _Download sources: docs/infra/common/download-sources.rst
+.. _change log: docs/infra/change-log.rst