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+# Dasharo firmware building guide
+
+## Intro
+
+This guide shows how to build Dasharo firmware for NovaCustom devices.
+
+## Requirements
+
+This guide was verified on Ubuntu 22.04. In practice, any Linux distribution
+with [Docker](https://www.docker.com/) support should be enough to complete it.
+
+Make sure that you have following packages installed:
+
+* Docker
+    - follow [Install Docker Engine on Ubuntu](https://docs.docker.com/engine/install/ubuntu/)
+    - follow [Post-installation steps for Linux](https://docs.docker.com/engine/install/linux-postinstall/)
+* Git
+
+    ```bash
+    sudo apt -y install git
+    ```
+
+## Build Dasharo BIOS firmware
+
+1. Refer to the table below to set the `SDK`, `REVISION`, and `CONFIG` variables
+   based on your device and preference:
+    - using release branch will always result in the latest released version,
+    - using tag you can specify the exact version to build.
+
+| Device        | SDK version             | release branch | tag format                 | config |
+|---------------|-------------------------|----------------|----------------------------|---------------------|
+| NV4X TGL      | coreboot-sdk:0ad5fbd48d | clevo/release  | novacustom_nv4x_vX.Y.Z     | novacustom_nv4x_tgl |
+| NS5X/7X TGL   | coreboot-sdk:0ad5fbd48d | clevo/release  | novacustom_ns5x_vX.Y.Z     | novacustom_ns5x_tgl |
+| NS5X/NS7X ADL | coreboot-sdk:0ad5fbd48d | clevo/release  | novacustom_ns5x_adl_vX.Y.Z | novacustom_nv4x_adl |
+| NV4X ADL      | coreboot-sdk:0ad5fbd48d | clevo/release  | novacustom_nv4x_adl_vX.Y.Z | novacustom_ns4x_adl |
+
+1. Export variables:
+
+    ```bash
+    export SDK="<SDK>"
+    export REVISION="<BRANCH_OR_TAG>"
+    export CONFIG="<CONFIG>"
+    ```
+
+    For example, if you want to build `v1.3.0` firmware for the `NS5X ADL`, you
+    should set:
+
+    ```bash
+    export SDK="coreboot-sdk:0ad5fbd48d"
+    ```
+
+    ```bash
+    export REVISION="novacustom_ns5x_adl_v1.3.0"
+    ```
+
+    ```bash
+    export CONFIG="config.novacustom_ns5x_adl.3.0"
+    ```
+
+1. Clone the Dasharo coreboot repository:
+
+    ```bash
+    git clone https://github.com/Dasharo/coreboot.git
+    ```
+
+1. Navigate to the source code directory and checkout to the desired revision:
+
+    ```bash
+    cd coreboot
+    ```
+
+    ```bash
+    git checkout $REVISION
+    ```
+
+    ```bash
+    git submodule update --init --recursive --checkout
+    ```
+
+1. Start docker container:
+
+
+    ```bash
+    docker run --rm -it -u $UID \
+       -v $PWD:/home/coreboot/coreboot \
+       -w /home/coreboot/coreboot \
+       $SDK /bin/bash
+    ```
+
+1. Inside of the container, configure and start the build process:
+
+    ```bash
+    cp configs/config.$CONFIG .config
+    ```
+
+    ```bash
+    make olddefconfig
+    ```
+
+    ```bash
+    make
+    ```
+
+This will produce a Dasharo binary placed in `build/coreboot.rom`, which can be
+flashed in following ways, depending on your situation:
+
+* To flash Dasharo for the first time, refer to the
+  [initial deployment guide](initial-deployment.md).
+* To update Dasharo, refer to the [firmware update guide](firmware-update.md).
+
+## Build Dasharo EC firmware
+
+1. Refer to the table below to set the `EC_BOARD_MODEL`, and `REVISION` based
+   on your device and preference:
+    - using `release ` branch will always result in the latest released version,
+    - using tag you can specify the exact version to build.
+
+| Device        | model    | tag format                 |
+|---------------|----------|----------------------------|
+| NV4X TGL      | nv4x_tgl | novacustom_nv4x_vX.Y.Z     |
+| NS5X/7X TGL   | ns5x_tgl | novacustom_ns5x_vX.Y.Z     |
+| NV4X ADL      | nv4x_tgl | novacustom_nv4x_adl_vX.Y.Z |
+| NS5X/NS7X ADL | ns5x_adl | novacustom_ns5x_adl_vX.Y.Z |
+
+1. Export variables:
+
+    ```bash
+    export EC_BOARD_MODEL="<MODEL>"
+    export REVISION="<REVISION>"
+    ```
+
+    For example, if you want to build `v1.3.0` firmware for the `NS5X ADL`, you
+    should set:
+
+    ```bash
+    export REVISION="novacustom_ns5x_adl_v1.3.0"
+    ```
+
+    ```bash
+    export EC_BOARD_MODEL="novacustom_ns5x_adl"
+    ```
+
+1. Clone the Dasharo ec repository:
+
+    ```bash
+    git clone https://github.com/Dasharo/ec.git
+    ```
+
+1. Navigate to the source code directory and checkout to the desired revision:
+
+    ```bash
+    cd ec
+    ```
+
+    ```bash
+    git checkout $REVISION
+    ```
+
+1. Build the firmware:
+
+    ```bash
+    EC_BOARD_VENDOR=novacustom ./build.sh
+    ```
+
+The resulting image will be placed in: `novacustom_$EC_BOARD_MODEL.rom`, which
+can be flashed in following ways, depending on your situation:
+
+* To flash Dasharo for the first time, refer to the
+  [initial deployment guide](initial-deployment.md).
+* To update Dasharo, refer to the [firmware update guide](firmware-update.md).