1Introduction 2============ 3 4RK3399 key features we might use in U-Boot: 5* CPU: ARMv8 64bit Big-Little architecture, 6* Big: dual-core Cortex-A72 7* Little: quad-core Cortex-A53 8* IRAM: 200KB 9* DRAM: 4GB-128MB dual-channel 10* eMMC: support eMMC 5.0/5.1, suport HS400, HS200, DDR50 11* SD/MMC: support SD 3.0, MMC 4.51 12* USB: USB3.0 typc-C port *2 with dwc3 controller 13* USB2.0 EHCI host port *2 14* Display: RGB/HDMI/DP/MIPI/EDP 15 16evb key features: 17* regulator: pwm regulator for CPU B/L 18* PMIC: rk808 19* debug console: UART2 20 21In order to support Arm Trust Firmware(ATF), we can use either SPL or 22miniloader from rockchip to do: 23* do DRAM init 24* load and verify ATF image 25* load and verify U-Boot image 26 27Here is the step-by-step to boot to U-Boot on rk3399. 28 29Get the Source and prebuild binary 30================================== 31 32 > mkdir ~/evb_rk3399 33 > cd ~/evb_rk3399 34 > git clone https://github.com/ARM-software/arm-trusted-firmware.git 35 > git clone https://github.com/rockchip-linux/rkbin.git 36 > git clone https://github.com/rockchip-linux/rkdeveloptool.git 37 38Compile the ATF 39=============== 40 41 > cd arm-trusted-firmware 42 > make realclean 43 > make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399 bl31 44 45 Or you can get the bl31.elf directly from Rockchip: 46 cp rkbin/rk33/rk3399_bl31_v1.00.elf ../u-boot/bl31.elf 47 48 Get bl31.elf in this step, copy it to U-Boot root dir: 49 > cp bl31.elf ../u-boot/ 50 51Compile the U-Boot 52================== 53 54 > cd ../u-boot 55 > export ARCH=arm64 56 > export CROSS_COMPILE=aarch64-linux-gnu- 57 > make evb-rk3399_defconfig 58 for firefly-rk3399, use below instead: 59 > make firefly-rk3399_defconfig 60 > make 61 > make u-boot.itb 62 63 Get spl/u-boot-spl.bin and u-boot.itb in this step. 64 65Compile the rkdeveloptool 66======================= 67 Follow instructions in latest README 68 > cd ../rkflashtool 69 > autoreconf -i 70 > ./configure 71 > make 72 > sudo make install 73 74 Get rkdeveloptool in you Host in this step. 75 76Both origin binaries and Tool are ready now, choose either option 1 or 77option 2 to deploy U-Boot. 78 79Package the image 80================= 81 82Package the image for U-Boot SPL(option 1) 83-------------------------------- 84 > cd .. 85 > tools/mkimage -n rk3399 -T rksd -d spl/u-boot-spl.bin idbspl.img 86 87 Get idbspl.img in this step. 88 89Package the image for Rockchip miniloader(option 2) 90------------------------------------------ 91 > cd .. 92 > cp arm-trusted-firmware/build/rk3399/release/bl31.elf rkbin/rk33 93 > ./rkbin/tools/trust_merger rkbin/tools/RK3399TRUST.ini 94 > ./rkbin/tools/loaderimage --pack --uboot u-boot/u-boot-dtb.bin uboot.img 95 96 Get trust.img and uboot.img in this step. 97 98Flash the image to eMMC 99======================= 100 101Flash the image with U-Boot SPL(option 1) 102------------------------------- 103Power on(or reset with RESET KEY) with MASKROM KEY preesed, and then: 104 > rkdeveloptool db rkbin/rk33/rk3399_loader_v1.08.106.bin 105 > rkdeveloptool wl 64 u-boot/idbspl.img 106 > rkdeveloptool wl 0x4000 u-boot/u-boot.itb 107 > rkdeveloptool rd 108 109Flash the image with Rockchip miniloader(option 2) 110---------------------------------------- 111Power on(or reset with RESET KEY) with MASKROM KEY preesed, and then: 112 > rkdeveloptool db rkbin/rk33/rk3399_loader_v1.08.106.bin 113 > rkdeveloptool ul rkbin/rk33/rk3399_loader_v1.08.106.bin 114 > rkdeveloptool wl 0x4000 u-boot/uboot.img 115 > rkdeveloptool wl 0x6000 u-boot/trust.img 116 > rkdeveloptool rd 117 118You should be able to get U-Boot log in console/UART2(baurdrate 1500000) 119For more detail, please reference to: 120http://opensource.rock-chips.com/wiki_Boot_option 121