doc: Split the User Guide into multiple files

The User Guide document has grown organically over time and
now covers a wide range of topics, making it difficult to
skim read and extract information from. Currently, it covers
these topics and maybe a couple more:

- Requirements (hardware, tools, libs)
- Checking out the repo
- Basic build instructions
- A comprehensive list of build flags
- FIP packaging
- Building specifically for Juno
- Firmware update images
- EL3 payloads
- Preloaded BL33 boot flow
- Running on FVPs
- Running on Juno

I have separated these out into a few groups that become new
documents. Broadly speaking, build instructions for the tools,
for TF-A generally, and for specific scenarios are separated.
Content relating to specific platforms (Juno and the FVPs are
Arm-specific platforms, essentially) has been moved into the
documentation that is specific to those platforms, under
docs/plat/arm.

Change-Id: Ica87c52d8cd4f577332be0b0738998ea3ba3bbec
Signed-off-by: Paul Beesley <paul.beesley@arm.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/docs/getting_started/index.rst b/docs/getting_started/index.rst
index 07e3753ec..817beaf8e 100644
--- a/docs/getting_started/index.rst
+++ b/docs/getting_started/index.rst
@@ -6,9 +6,16 @@ Getting Started
    :caption: Contents
    :numbered:
 
-   user-guide
+   prerequisites
    docs-build
+   tools-build
+   initial-build
+   build-options
    image-terminology
    porting-guide
    psci-lib-integration-guide
    rt-svc-writers-guide
+
+--------------
+
+*Copyright (c) 2019, Arm Limited. All rights reserved.*