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- 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-
- Build the full U-Boot and a FIT image including the ATF
- =======================================================
- > make CROSS_COMPILE=aarch64-unknown-elf- 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=idbloader.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
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