This got me uboot
https://forum.pine64.org/showthread.php?tid=8174
I got to this in the armtix firefly-rk3399 guide
Next, you have to create u-boot script u-boot.cmd with following contents:
setenv bootargs "consoleblank=0 root=/dev/<partname> rw rootwait console=ttyS2,1500000n8 earlycon=uart8250,mmio32,0xff1a0000 console=tty1"
load mmc 1:1 ${fdt_addr_r} /dtbs/rockchip/rk3399-firefly.dtb
load mmc 1:1 ${kernel_addr_r} /Image
load mmc 1:1 ${ramdisk_addr_r} /initramfs-linux.uimg
booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdt_addr_r}
I think that becomes
setenv bootargs "consoleblank=0 root=/dev/<partname> rw rootwait console=ttyS2,1500000n8 earlycon=uart8250,mmio32,0xff1a0000 console=tty1"
load mmc 1:1 ${fdt_addr_r} /dtbs/rockchip/rk3328-rock64.dtb
load mmc 1:1 ${kernel_addr_r} /Image
load mmc 1:1 ${ramdisk_addr_r} /initramfs-linux.uimg
booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdt_addr_r}
do i assume
root=/dev/<partname>
becomes ??
root=/dev/sda
please advise