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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 CROSS_COMPILE=aarch64-linux-gnu- bl31
- $ cp build/imx8mq/release/bl31.bin $(builddir)
- Get the ddr and display port firmware
- -------------------------------------
- .. code-block:: bash
- $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.15.bin
- $ chmod +x firmware-imx-8.15.bin
- $ ./firmware-imx-8.15.bin
- $ cp firmware-imx-8.15/firmware/hdmi/cadence/signed_dp_imx8m.bin $(builddir)
- $ cp firmware-imx-8.15/firmware/ddr/synopsys/lpddr4*.bin $(builddir)
- Build U-Boot
- ------------
- .. code-block:: bash
- $ export CROSS_COMPILE=aarch64-linux-gnu-
- $ make librem5_defconfig
- $ make ARCH=arm
- 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/u-boot-librem5.imx
- $ uuu uuu_scripts/u-boot_flash_librem5.lst
- Reboot the phone.
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