mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-24 10:58:52 +09:00
![]() The order distroboot searches for a boot.scr is fixed at compile time.
To make BIOS_DISABLE work as expected and boot from mmc1 instead of
mmc0 if enabled, we need to change the environment at runtime.
Especially as commit:
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fit_spl_atf.its | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
puma-rk3399.c | ||
README |
Introduction ============ The RK3399-Q7 (Puma) is a system-on-module featuring the Rockchip RK3399 in a Qseven-compatible form-factor. RK3399-Q7 features: * CPU: ARMv8 64bit Big-Little architecture, * Big: dual-core Cortex-A72 * Little: quad-core Cortex-A53 * IRAM: 200KB * DRAM: 4GB-128MB dual-channel * eMMC: onboard eMMC * SD/MMC * GbE (onboard Micrel KSZ9031) Gigabit ethernet PHY * USB: * USB3.0 dual role port * 2x USB3.0 host, 1x USB2.0 host via onboard USB3.0 hub * Display: HDMI/eDP/MIPI * Camera: 2x CSI (one on the edge connector, one on the Q7 specified CSI ZIF) * NOR Flash: onboard SPI NOR * Companion Controller: onboard additional Cortex-M0 microcontroller * RTC * fan controller * CAN Here is the step-by-step to boot to U-Boot on rk3399. Get the Source and build ATF/Cortex-M0 binaries =============================================== > git clone git://git.theobroma-systems.com/arm-trusted-firmware.git > git clone git://git.theobroma-systems.com/rk3399-cortex-m0.git Compile the ATF =============== > cd arm-trusted-firmware > make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399 bl31 > cp build/rk3399/release/bl31.bin ../u-boot/bl31-rk3399.bin Compile the M0 firmware ======================= > cd ../rk3399-cortex-m0 > make CROSS_COMPILE=arm-cortex_m0-eabi- > cp rk3399m0.bin ../u-boot Compile the U-Boot ================== > cd ../u-boot > make CROSS_COMPILE=aarch64-linux-gnu- puma-rk3399_defconfig all Package the image ================= Creating a SPL image for SD-Card/eMMC > tools/mkimage -n rk3399 -T rksd -d spl/u-boot-spl.bin spl_mmc.img Creating a SPL image for SPI-NOR > tools/mkimage -n rk3399 -T rkspi -d spl/u-boot-spl.bin spl_nor.img Create the FIT image containing U-Boot proper, ATF, M0 Firmware, devicetree > make CROSS_COMPILE=aarch64-linux-gnu- u-boot.itb Flash the image =============== Copy the SPL to offset 32k for SD/eMMC, offset 0 for NOR-Flash and the FIT image to offset 256k card. SD-Card ------- > dd if=spl_mmc.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/rk3399_loader_v1.08.106.bin > ./rkdeveloptool wl 64 ../spl_mmc.img > ./rkdeveloptool wl 512 ../u-boot.itb NOR-Flash --------- Writing the SPI NOR Flash requires a running U-Boot. For the sake of simplicity we assume you have a SD-Card with a partition containing the required files ready. > load mmc 1:1 ${kernel_addr_r} spl_nor.img > sf probe > sf erase 0 +$filesize > sf write $kernel_addr_r 0 ${filesize} > load mmc 1:1 ${kernel_addr_r} u-boot.itb > sf erase 0x40000 +$filesize > sf write $kernel_addr_r 0x40000 ${filesize} Reboot the system and you should see a U-Boot console on UART0 (115200n8).