Changes to readme files

Dot points to introduction, and shifting the build instructions to
docs/2.\ Building.md

Signed-off-by: James O'Shannessy <james.oshannessy@fiberdyne.com.au>

1 files changed, 39 insertions, 0 deletions

diff --git a/docs/2. Building.md b/docs/2. Building.md
index e69de29..983db8d 100644
--- a/docs/2. Building.md
+++ b/docs/2. Building.md
@@ -0,0 +1,39 @@
+Building AVIRT
+===================================
+
+## Table of Contents
+1. [Out of Tree](#out-of-tree)	
+2. [In Tree](#in-tree)
+
+<a name="out-of-tree"/>
+
+## Out Of Tree
+
+The kernel modules can be built either in-tree, or out-of-tree.
+To build both AVIRT and the dummy Audio Path out-of-tree, use the following command:
+
+```sh
+$ CONFIG_AVIRT=m CONFIG_AVIRT_BUILDLOCAL=y CONFIG_AVIRT_DUMMYAP=m make -C /lib/modules/$(uname -r)/build/ M=$(pwd)
+```
+
+To build both AVIRT and the dummy Audio Path out-of-tree for [AGL](http://docs.automotivelinux.org/) (`aarch64` currently supported), use the [XDS](http://docs.automotivelinux.org/docs/devguides/en/dev/reference/xds/part-1/0_Abstract.html) build system together with the `make_agl.sh` script:
+
+```sh
+$ ./make_agl.sh ${XDS_SDK_ID}
+```
+
+<a name="in-tree"/>
+
+## In tree
+
+
+To build in tree, use the [Fiberdyne Linux fork](https://github.com/fiberdyne/linux), which will automatically clone the AVIRT Driver and required AudioPath modules to the `drivers/staging` directory. You can then turn AVIRT Support on by setting to `<M>`. The drivers can be found here:
+```
+$ make menuconfig
+
+# Navigate to: Device Drivers--->Staging Drivers--->AVIRT Support
+```
+Finally build the kernel with the configuration selected by making.
+```
+$ make
+```
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