MrDzikuPL

Fantastic instructions and thanks for all the work! I was able to follow the instructions and almost had it working. There were some small changes required however.
 
I had to modify my /boot/boot.cmd on the nvme drive:
--- /boot/boot.cmd +++ /boot/boot.cmd @@ -6,7 +6,7 @@ setenv load_addr "0x9000000" setenv overlay_error "false" # default values -setenv rootdev "/dev/mmcblk0p1" +setenv rootdev "/dev/nvme0n1p1" setenv verbosity "1" setenv console "both" setenv bootlogo "false" @@ -29,7 +29,7 @@ if test "${bootlogo}" = "true"; then setenv consoleargs "bootsplash.bootfile=bootsplash.armbian ${consoleargs}"; fi # get PARTUUID of first partition on SD/eMMC the boot script was loaded from -if test "${devtype}" = "mmc"; then part uuid mmc ${devnum}:1 partuuid; fi +if test "${devtype}" = "nvme"; then part uuid nvme ${devnum}:1 partuuid; fi setenv bootargs "root=${rootdev} rootwait rootfstype=${rootfstype} ${consoleargs} consoleblank=0 loglevel=${verbosity} ubootpart=${partuuid} usb-storage.quirks=${usbstoragequirks} ${extraargs} ${extraboardargs}"  
Then after modifying I ran `mkimage -C none -A arm -T script -d /u/boot/boot.cmd /u/boot/boot.scr`
 
(I had mounted the nvme partition under `/u` after the `nand-sata-instal` step completed)
 
Without this fix the board would not seem to boot. U-boot would complete and then load the kernel. However I was able to see via serial that the kernel was waiting for the root device to appear (looping `Begin: Running /scripts/local-block ... done.` over and over). Then it would drop to an initramfs shell and alert that it was unable to find the root filesystem device and had given up.
 
Hardware:
RockPi 4A 1.4
Kingston A2000 1TB
ROCK PI 4x M.2 Extension board v1.6
 
Armbian Image:
5036f952501644989d744d789d36c4f797501d48e24605d7a8f043adfc792ad0 *Armbian_21.02.1_Rockpi-4a_buster_current_5.10.12.img.xz
 
Full /boot/armbianEnv.txt:
verbosity=1 console=both bootlogo=false overlay_prefix=rockchip fdtfile=rockchip/rk3399-rock-pi-4a.dtb rootdev=UUID=3e02d076-8e50-47fe-9a55-df7e1edef6e0 rootfstype=ext4 usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u Full /boot/boot.cmd:
# DO NOT EDIT THIS FILE # # Please edit /boot/armbianEnv.txt to set supported parameters # setenv load_addr "0x9000000" setenv overlay_error "false" # default values #setenv rootdev "/dev/mmcblk0p1" setenv rootdev "/dev/nvme0n1p1" setenv verbosity "1" setenv console "both" setenv bootlogo "false" setenv rootfstype "ext4" setenv docker_optimizations "on" setenv earlycon "off" echo "Boot script loaded from ${devtype} ${devnum}" if test -e ${devtype} ${devnum} ${prefix}armbianEnv.txt; then load ${devtype} ${devnum} ${load_addr} ${prefix}armbianEnv.txt env import -t ${load_addr} ${filesize} fi if test "${logo}" = "disabled"; then setenv logo "logo.nologo"; fi if test "${console}" = "display" || test "${console}" = "both"; then setenv consoleargs "console=tty1"; fi if test "${console}" = "serial" || test "${console}" = "both"; then setenv consoleargs "console=ttyS2,1500000 ${consoleargs}"; fi if test "${earlycon}" = "on"; then setenv consoleargs "earlycon ${consoleargs}"; fi if test "${bootlogo}" = "true"; then setenv consoleargs "bootsplash.bootfile=bootsplash.armbian ${consoleargs}"; fi # get PARTUUID of first partition on SD/eMMC the boot script was loaded from #if test "${devtype}" = "mmc"; then part uuid mmc ${devnum}:1 partuuid; fi if test "${devtype}" = "nvme"; then part uuid nvme ${devnum}:1 partuuid; fi setenv bootargs "root=${rootdev} rootwait rootfstype=${rootfstype} ${consoleargs} consoleblank=0 loglevel=${verbosity} ubootpart=${partuuid} usb-storage.quirks=${usbstoragequirks} ${extraargs} ${extraboardargs}" if test "${docker_optimizations}" = "on"; then setenv bootargs "${bootargs} cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory swapaccount=1"; fi load ${devtype} ${devnum} ${ramdisk_addr_r} ${prefix}uInitrd load ${devtype} ${devnum} ${kernel_addr_r} ${prefix}Image load ${devtype} ${devnum} ${fdt_addr_r} ${prefix}dtb/${fdtfile} fdt addr ${fdt_addr_r} fdt resize 65536 for overlay_file in ${overlays}; do if load ${devtype} ${devnum} ${load_addr} ${prefix}dtb/rockchip/overlay/${overlay_prefix}-${overlay_file}.dtbo; then echo "Applying kernel provided DT overlay ${overlay_prefix}-${overlay_file}.dtbo" fdt apply ${load_addr} || setenv overlay_error "true" fi done for overlay_file in ${user_overlays}; do if load ${devtype} ${devnum} ${load_addr} ${prefix}overlay-user/${overlay_file}.dtbo; then echo "Applying user provided DT overlay ${overlay_file}.dtbo" fdt apply ${load_addr} || setenv overlay_error "true" fi done if test "${overlay_error}" = "true"; then echo "Error applying DT overlays, restoring original DT" load ${devtype} ${devnum} ${fdt_addr_r} ${prefix}dtb/${fdtfile} else if load ${devtype} ${devnum} ${load_addr} ${prefix}dtb/rockchip/overlay/${overlay_prefix}-fixup.scr; then echo "Applying kernel provided DT fixup script (${overlay_prefix}-fixup.scr)" source ${load_addr} fi if test -e ${devtype} ${devnum} ${prefix}fixup.scr; then load ${devtype} ${devnum} ${load_addr} ${prefix}fixup.scr echo "Applying user provided fixup script (fixup.scr)" source ${load_addr} fi fi booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r} # Recompile with: # mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr