Add dependencies to README, add model READMEs

README.md

@@ -2,13 +2,49 @@
 
 System76 Open Source Firmware
 
+## Dependencies
+
+### Install toolchain
+```
+sudo apt-get install \
+  build-essential \
+  bison \
+  ccache \
+  flex \
+  git-lfs \
+  gnat \
+  mtools \
+  nasm \
+  uuid-dev
+```
+
+### Install rust nightly
+```
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain nightly
+```
+
+### Load cargo environment (or optionally reboot)
+```
+source ~/.cargo/env
+```
+
+### Install cargo-xbuild
+```
+cargo install cargo-xbuild
+```
+
+### Build firmware, replace darp5 with your model (look in the models directory for examples)
+```
+./scripts/build.sh darp5
+```
+
 ## Contents
 
 - [apps](./apps) - Applications
 - [coreboot](https://github.com/system76/coreboot.git) - coreboot README
-- [edk2](https://github.com/system76/edk2.git) - EDK II Project
+- [edk2](https://github.com/system76/edk2.git) - EDK II Project
 - [edk2-non-osi](https://github.com/tianocore/edk2-non-osi.git)
-- [edk2-platforms](https://github.com/system76/edk2-platforms.git) - **EDK II Minimum Platform Firmware for Intel(R) Platforms**
+- [edk2-platforms](https://github.com/system76/edk2-platforms.git) - **EDK II Minimum Platform Firmware for Intel(R) Platforms**
 - [FSP](https://github.com/IntelFsp/FSP.git) - Intel® Firmware Support Package (Intel® FSP) Binaries
 - [libs](./libs) - Libraries
 - [models](./models) - Models