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Introduction
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============
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The RK3399-Q7 (Puma) is a system-on-module featuring the Rockchip
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RK3399 in a Qseven-compatible form-factor.
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RK3399-Q7 features:
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* CPU: ARMv8 64bit Big-Little architecture,
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* Big: dual-core Cortex-A72
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* Little: quad-core Cortex-A53
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* IRAM: 200KB
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* DRAM: 4GB-128MB dual-channel
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* eMMC: onboard eMMC
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* SD/MMC
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* GbE (onboard Micrel KSZ9031) Gigabit ethernet PHY
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* USB:
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* USB3.0 dual role port
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* 2x USB3.0 host, 1x USB2.0 host via onboard USB3.0 hub
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* Display: HDMI/eDP/MIPI
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* Camera: 2x CSI (one on the edge connector, one on the Q7 specified CSI ZIF)
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* NOR Flash: onboard SPI NOR
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* Companion Controller: onboard additional Cortex-M0 microcontroller
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* RTC
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* fan controller
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* CAN
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Here is the step-by-step to boot to U-Boot on rk3399.
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Get the Source and build ATF/Cortex-M0 binaries
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===============================================
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> git clone git://git.theobroma-systems.com/arm-trusted-firmware.git
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> git clone git://git.theobroma-systems.com/rk3399-cortex-m0.git
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Compile the ATF
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===============
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> cd arm-trusted-firmware
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> make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399 bl31
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> cp build/rk3399/release/bl31.bin ../u-boot/bl31-rk3399.bin
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Compile the M0 firmware
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=======================
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> cd ../rk3399-cortex-m0
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> make CROSS_COMPILE=arm-cortex_m0-eabi-
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> cp rk3399m0.bin ../u-boot
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Compile the U-Boot
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==================
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> cd ../u-boot
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> make CROSS_COMPILE=aarch64-linux-gnu- puma-rk3399_defconfig all
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Package the image
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=================
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Creating a SPL image for SD-Card/eMMC
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> tools/mkimage -n rk3399 -T rksd -d spl/u-boot-spl.bin spl_mmc.img
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Creating a SPL image for SPI-NOR
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> tools/mkimage -n rk3399 -T rkspi -d spl/u-boot-spl.bin spl_nor.img
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Create the FIT image containing U-Boot proper, ATF, M0 Firmware, devicetree
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> make CROSS_COMPILE=aarch64-linux-gnu- u-boot.itb
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Flash the image
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===============
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Copy the SPL to offset 32k for SD/eMMC, offset 0 for NOR-Flash and the FIT
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image to offset 256k card.
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SD-Card
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-------
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> dd if=spl_mmc.img of=/dev/sdb seek=64
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> dd if=u-boot.itb of=/dev/sdb seek=512
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eMMC
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----
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rkdeveloptool allows to flash the on-board eMMC via the USB OTG interface with
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help of the Rockchip loader binary.
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> git clone https://github.com/rockchip-linux/rkdeveloptool
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> cd rkdeveloptool
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> autoreconf -i && ./configure && make
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> git clone https://github.com/rockchip-linux/rkbin.git
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> ./rkdeveloptool db rkbin/rk33/rk3399_loader_v1.08.106.bin
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> ./rkdeveloptool wl 64 ../spl_mmc.img
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> ./rkdeveloptool wl 512 ../u-boot.itb
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NOR-Flash
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---------
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Writing the SPI NOR Flash requires a running U-Boot. For the sake of simplicity
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we assume you have a SD-Card with a partition containing the required files
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ready.
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> load mmc 1:1 ${kernel_addr_r} spl_nor.img
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> sf probe
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> sf erase 0 +$filesize
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> sf write $kernel_addr_r 0 ${filesize}
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> load mmc 1:1 ${kernel_addr_r} u-boot.itb
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> sf erase 0x40000 +$filesize
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> sf write $kernel_addr_r 0x40000 ${filesize}
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Reboot the system and you should see a U-Boot console on UART0 (115200n8).
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