1 Here is the step-by-step to boot to U-Boot on rk3368. 2 3 Get miniloader and trust.img form rockchip vendor u-boot source code 4 ============================================================================== 5 > git clone https://github.com/rockchip-linux/u-boot.git rockchip-uboot 6 > cd rockchip-uboot 7 > make rk3368_defconfig /*chose px5_defconfig if you run a px5 platform here*/ 8 > ./mkv8.sh 9 10 Compile the upstream U-Boot 11 =========================== 12 > cd u-boot 13 > make CROSS_COMPILE=aarch64-linux-gnu- sheep-rk3368_defconfig all 14 15 Package u-boot for miniloader 16 ================================ 17 > ../rockchip-uboot/tools/loaderimage --pack --uboot u-boot.bin u-boot.img 18 19 Flash the image by rkdeveloptool 20 ================================ 21 rkdeveloptool can get from https://github.com/rockchip-linux/rkdeveloptool.git 22 23 Power on(or reset with RESET KEY) with MASKROM KEY preesed, and then: 24 > rkdeveloptool db ./rockchip-uboot/rk3368_loader_v2.00.256.bin 25 > rkdeveloptool wl 0x6000 ./rockchip-uboot/trust.img 26 > rkdeveloptool wl 0x4000 ./u-boot/u-boot.img 27 > rkdeveloptool RD 28 29 You should be able to get U-Boot log message from boot console: 30 31 U-Boot 2017.05-rc3-01094-g9ddd1e8-dirty (May 15 2017 - 15:57:23 +0800) 32 33 Model: Rockchip sheep board 34 DRAM: 2 GiB 35 MMC: dwmmc@ff0f0000: 0 36 Using default environment 37 38 In: serial@ff690000 39 Out: serial@ff690000 40 Err: serial@ff690000 41 Net: Net Initialization Skipped 42 No ethernet found. 43 Hit any key to stop autoboot: 0 44 => 45
