| .. 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. |
