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README.md

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+u-boot for MNT Reform build script
+----------------------------------
+
+Work in progress script for building uboot for the MNT Refom 2 computer.
+
+## Howto
+
+To compile the script, you'll need to install some packages. On Debian :
+
+```
+apt install -y --no-install-recommends gcc-aarch64-linux-gnu \
+                      device-tree-compiler \ 
+                      make \
+                      bc \
+                      build-essential \
+                      bison \
+                      flex \
+                      bash \
+                      git \
+                      ca-certificates
+```
+
+You just need to launch `make_uboot.sh`. By default, script build uboot with
+sdcard support. to build it with emmc support you need to pass the `emmc`
+argument:
+
+```
+./make_uboot.sh emmc
+```
+
+You can also define `UBOOT_BUILD` environment variable with `emmc` or `sdcard`
+variable.
+
+The `flash.bin` is located in the `u-boot/` directory.
+
+## Build with docker
+
+Build the image :
+
+```
+docker build -t reform_kernel_build .
+```
+
+Then run the container with  with a directory mapped to `/output`:
+
+```
+docker run -v /home/docker/output:/output --env UBOOT_BUILD=sdcard --rm reform_kernel_build
+```
+
+You could pass the  `UBOOT_BUILD` environment variable to your container do tell
+`make_uboot.sh` which version to compile :
+
+ * `sdcard` or not defined if you'll install to the SDCard
+ * `emmc` for the internal memomry of the IMX card
+
+Flash.bin file will be in the directory mapped to `/output` in the
+container.
+
+## Licence
+
+This work is derivated from MNT script found [here][l_mnt_image] and licenced
+under the GPLv3 Licence
+
+[l_mnt_image]:https://source.mnt.re/reform/reform-system-image/