Update README.md

README.md

@@ -1,9 +1,35 @@
 # bao-rpi4-bench
 Project using Bao hypervisor with FreeRTOS+Linux running haRTStone benchmark.
 
-Originally based on https://github.com/bao-project/bao-demos demo project but specialized for Raspberry Pi 4
+Originally based on [Bao Project's][bao] demo project but specialized for Raspberry Pi 4
 running FreeRTOS and Linux. FreeRTOS executes the haRTSone benchmark to determine the performance and real time capabilities of
 FreeRTOS running under a vm environment.
 
-# Usage
+## Install Dependencies
+
+```
+sudo apt install build-essential bison flex git libssl-dev ninja-build \
+    u-boot-tools pandoc
+```
+## Download and setup the toolchain
+
+Download the latest bare-metal cross-compile toolchain for RPI4's architecture
+
+**aarch64-none-elf-** toolchain: [Arm Developer's][arm-toolchains].
+
+Install the toolchain. Then, set the **CROSS_COMPILE** environment variable 
+with the reference toolchain prefix path:
+
+```
+export CROSS_COMPILE=/path/to/toolchain/install/dir/bin/your-toolchain-prefix-
+```
+
+## Clone Repo
+```
 git clone --recurse-submodules https://github.com/xX7/bao-rpi4-bench.git
+```
+
+<!-- Links -->
+
+[arm-toolchains]: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads
+[bao]: https://github.com/bao-project