docs update

README.md

@@ -21,59 +21,32 @@ Vortex is a full-system RISCV-based GPGPU processor.
 ## Directory structure
 
 - `doc`: [Documentation](doc/Vortex.md).
-
 - `hw`: Hardware sources.
-
 - `driver`: Host drivers repository.
-
 - `runtime`: Kernel Runtime software.
-
 - `sim`: Simulators repository.
-
 - `tests`: Tests repository.
-
 - `ci`: Continuous integration scripts.
-
 - `miscs`: Miscellaneous resources.
 
-## Basic Installation
-
+## Build Instructions
+### Supported OS Platforms
+- Ubuntu 18.04
+- Centos 7
+### Toolchain Dependencies
+- [POCL](http://portablecl.org/)
+- [LLVM](https://llvm.org/)
+- [RISCV-GNU-TOOLCHAIN](https://github.com/riscv-collab/riscv-gnu-toolchain)
+- [Verilator](https://www.veripool.org/verilator)
 ### Install development tools 
-
     $ sudo apt-get install build-essential
     $ sudo apt-get install git
-
-### Install gnu-riscv-tools
-
-    $ export RISCV_TOOLCHAIN_PATH=/opt/riscv-gnu-toolchain
-
-    $ sudo apt-get -y install \
-        binutils build-essential libtool texinfo \
-        gzip zip unzip patchutils curl git \
-        make cmake ninja-build automake bison flex gperf \
-        grep sed gawk python bc \
-        zlib1g-dev libexpat1-dev libmpc-dev \
-        libglib2.0-dev libfdt-dev libpixman-1-dev 
-    $ git clone https://github.com/riscv/riscv-gnu-toolchain
-    $ cd riscv-gnu-toolchain
-    $ git submodule update --init --recursive
-    $ mkdir build
-    $ cd build    
-    $ ../configure --prefix=$RISCV_TOOLCHAIN_PATH --with-arch=rv32im --with-abi=ilp32
-    $ make -j`nproc`  
-    $ make -j`nproc` build-qemu
-
-### Install Verilator
-
-    You need into build the latest version using the instructions on their website
-    $ https://www.veripool.org/projects/verilator/wiki/Installing 
-
-### Install Vortex 
-
+### Install Vortex codebase
     $ git clone --recursive https://github.com/vortexgpgpu/vortex.git
     $ cd Vortex
-    $ make
-
-### Quick Test running OpenCL vecadd sample on 2 cores
-
-    $ ./ci/blackbox.sh --cores=2 --app=vecadd
+### Install prebuilt toolchain
+    $ ./ci/toolchain_install.sh -all
+### Build Vortex sources
+    $ make -s
+### Quick demo running vecadd OpenCL kernel on 2 cores
+    $ ./ci/blackbox.sh --driver=rtlsim --cores=2 --app=vecadd