| Here is the step-by-step to boot to U-Boot on RK3368-uQ7 |
| |
| Get the Source and build ATF |
| ============================ |
| |
| > git clone git://git.theobroma-systems.com/arm-trusted-firmware.git |
| > cd arm-trusted-firmware |
| > make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3368 bl31 |
| > cp build/rk3368/release/bl31.bin ../u-boot/bl31-rk3368.bin |
| |
| Configure U-Boot |
| ================ |
| |
| > cd ../u-boot |
| > make lion-rk3368_defconfig |
| |
| Build the TPL/SPL stage |
| ======================= |
| |
| > make CROSS_COMPILE=aarch64-unknown-elf- ARCH=arm |
| > tools/mkimage -n rk3368 -T rksd -d tpl/u-boot-tpl.bin spl-3368.img |
| > cat spl/u-boot-spl-dtb.bin >> spl-3368.img |
| |
| Build the full U-Boot and a FIT image including the ATF |
| ======================================================= |
| |
| > make CROSS_COMPILE=aarch64-unknown-elf- ARCH=arm u-boot.itb |
| |
| Flash the image |
| =============== |
| |
| Copy the SPL to offset 32k and the FIT image containing the payloads |
| (U-Boot proper, ATF, devicetree) to offset 256k card. |
| |
| SD-Card |
| ------- |
| |
| > dd if=spl-3368.img of=/dev/sdb seek=64 |
| > dd if=u-boot.itb of=/dev/sdb seek=512 |
| |
| eMMC |
| ---- |
| |
| rkdeveloptool allows to flash the on-board eMMC via the USB OTG interface with |
| help of the Rockchip loader binary. |
| |
| > git clone https://github.com/rockchip-linux/rkdeveloptool |
| > cd rkdeveloptool |
| > autoreconf -i && && ./configure && make |
| > git clone https://github.com/rockchip-linux/rkbin.git |
| > ./rkdeveloptool db rkbin/rk33/rk3368_loader_v2.00.256.bin |
| > ./rkdeveloptool wl 64 ../spl.img |
| > ./rkdeveloptool wl 512 ../u-boot.itb |
| |
| |
| If everything went according to plan, you should see the following |
| output on UART0: |
| |
| <debug_uart> U-Boot TPL board init |
| Trying to boot from BOOTROM |
| Returning to boot ROM... |
| Trying to boot from MMC1 |
| NOTICE: BL31: v1.3(release):v1.2-1320-gbf43a443 |
| NOTICE: BL31: Built : 18:04:47, Jul 5 2017 |
| |
| |
| U-Boot 2017.07-00158-g2395e99858 (Jul 18 2017 - 21:03:31 +0200) |
| |
| Model: Theobroma Systems RK3368-uQ7 SoM |
| DRAM: 2 GiB |
| MMC: dwmmc@ff0c0000: 1, dwmmc@ff0f0000: 0 |
| Using default environment |
| |
| In: serial@ff180000 |
| Out: serial@ff180000 |
| Err: serial@ff180000 |
| Net: |
| Warning: ethernet@ff290000 (eth0) using random MAC address - d2:69:35:7e:d0:1e |
| eth0: ethernet@ff290000 |
| Hit any key to stop autoboot: 2 |
