[PATCH 13/13] doc: librem5: add Librem5 documentation

[Angus Ainslie]

Initial commit of the Librem5 documentation

Signed-off-by: Angus Ainslie <angus at akkea.ca>
---
 doc/board/purism/librem5/librem5.rst | 60 ++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 doc/board/purism/librem5/librem5.rst

diff --git a/doc/board/purism/librem5/librem5.rst b/doc/board/purism/librem5/librem5.rst
new file mode 100644
index 0000000000..d380d48c71
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+++ b/doc/board/purism/librem5/librem5.rst
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+.. SPDX-License-Identifier: GPL-2.0+
+
+Librem5
+==========
+
+U-Boot for the Purism Librem5 phone
+
+Quick Start
+-----------
+
+- Build the ARM Trusted firmware binary
+- Get ddr and hdmi firmware
+- Build U-Boot
+
+Get and Build the ARM Trusted firmware
+--------------------------------------
+
+Note: srctree is U-Boot source directory
+Get ATF from: https://source.puri.sm/Librem5/arm-trusted-firmware
+branch: librem5
+
+.. code-block:: bash
+
+   $ make PLAT=imx8mq bl31
+   $ cp build/imx8mq/release/bl31.bin $(builddir)
+
+Get the ddr and hdmi firmware
+-----------------------------
+
+.. code-block:: bash
+
+   $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.10.bin
+   $ chmod +x firmware-imx-8.10.bin
+   $ ./firmware-imx-8.10.bin
+   $ cp firmware-imx-8.10/firmware/hdmi/cadence/signed_hdmi_imx8m.bin $(builddir)
+   $ cp firmware-imx-8.10/firmware/ddr/synopsys/lpddr4*.bin $(builddir)
+
+Build U-Boot
+------------
+
+.. code-block:: bash
+
+   $ export CROSS_COMPILE=aarch64-linux-gnu
+   $ make librem5_defconfig
+   $ make flash.bin
+
+Burn the flash.bin
+------------------
+
+Use uuu to burn flash.bin. Power on the phone while holding vol+ to get it
+into uuu mode.
+
+.. code-block:: bash
+
+   $ git clone https://source.puri.sm/Librem5/librem5-devkit-tools.git
+   $ cd librem5-devkit-tools
+   $ cp $(builddir)/flash.bin files/
+   $ uuu uuu_scripts/u-boot_flash_librem5.lst
+
+Reboot the phone.
-- 
2.25.1