I was looking for environment that helps me to edit/compile U-boot loader to disable 2 seconds delay at boot time…Cuz I’m completely new to some kernel editing stuff. So I create it and sharing with you guys))) + Bonus is that now $ reboot stuck bug is fixed by created boot-loader and board can reboot as expected 
The Official instruction doesn’t work for me (there were many errors on different stages) but you should read it to understand the process and where most files and commands were taken. Without this instruction I had 0 chances to create the environment so I want to thank the Radxa developers!
While downloading Debian ISO install VirtualBox. File.
Install Debian on VirtualBox (before install make shure you set option Bridged adapter for Adapter 1 This will give you direct IP of Debian SSH) When on installing process create user pol. All commands path are with pol name in (ex. /home/pol/fip/radxa-zero/).
Use any instruction if needed ex. video
UPD: Be careful - building kernel uses lot of resources (use minimum 15GB virtual HDD space, 2-3GB RAM and as many CPU cores as you can).
To enable SSH on Debian after installing:
sudo su
apt install net-tools
apt-get install openssh-server
Use
$ ifconfig -a
to find out IP of Debian host and you are good to make SSH connection directly from any SSH client you prefer.
Now get all necessary packages:
apt-get update && apt-get upgrade
apt-get install -y wget
apt install bc nano mc build-essential autoconf libtool cmake pkg-config git python-dev swig libpcre3-dev libnode-dev gawk wget diffstat bison flex device-tree-compiler libncurses5-dev gcc-aarch64-linux-gnu g+±aarch64-linux-gnu binfmt-support
apt-get install binfmt-support qemu-user-static
apt-get update && sudo apt-get install -y git
git clone -b radxa-zero-v2021.07 https://github.com/radxa/u-boot.git
git clone https://github.com/radxa/fip.git
apt-get install -y gcc-aarch64-linux-gnu device-tree-compiler libncurses5 libncurses5-dev
apt-get install -y bc python dosfstools flex build-essential libssl-dev mtools
wget https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz
tar xvf gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz -C /opt
apt-get install gcc-arm-linux-gnueabihf
apt install fastboot
apt-get install -y python3-pip
pip3 install git+https://github.com/superna9999/pyamlboot
Now its time to do some cool hacking))
To edit delay time U-boot Enairment variable are used. Link.
Set bootdelay variable to -2 to boot without delay and not check for abort.
Lets do it:
nano “/home/rock/u-boot/configs/radxa-zero_defconfig”
Add line
CONFIG_BOOTDELAY=-2
before line
#CONFIG_DISPLAY_CPUINFO is not set
Then close nano with saving changes.
And here comes the compiling parts:
cd u-boot
export ARCH=arm
export CROSS_COMPILE=aarch64-linux-gnu-
make radxa-zero_defconfig
make
Then create binaries:
cp u-boot.bin …/fip/radxa-zero/bl33.bin
cd …/fip/radxa-zero
make
Output
root@debian:/home/pol/u-boot# export ARCH=arm
export CROSS_COMPILE=aarch64-linux-gnu-
root@debian:/home/pol/u-boot# make
scripts/kconfig/conf --syncconfig Kconfig
CFG u-boot.cfg
GEN include/autoconf.mk
GEN include/autoconf.mk.dep
UPD include/generated/version_autogenerated.h
UPD include/generated/timestamp_autogenerated.h
CC lib/asm-offsets.s
UPD include/generated/generic-asm-offsets.h
CC arch/arm/lib/asm-offsets.s
UPD include/generated/asm-offsets.h
HOSTCC scripts/dtc/dtc.o
HOSTCC scripts/dtc/flattree.o
HOSTCC scripts/dtc/fstree.o
HOSTCC scripts/dtc/data.o
HOSTCC scripts/dtc/livetree.o
HOSTCC scripts/dtc/treesource.o
HOSTCC scripts/dtc/srcpos.o
HOSTCC scripts/dtc/checks.o
HOSTCC scripts/dtc/util.o
LEX scripts/dtc/dtc-lexer.lex.c
YACC scripts/dtc/dtc-parser.tab.h
HOSTCC scripts/dtc/dtc-lexer.lex.o
YACC scripts/dtc/dtc-parser.tab.c
HOSTCC scripts/dtc/dtc-parser.tab.o
HOSTLD scripts/dtc/dtc
HOSTCC tools/gen_eth_addr
HOSTCC tools/gen_ethaddr_crc.o
WRAP tools/lib/crc8.c
HOSTCC tools/lib/crc8.o
HOSTLD tools/gen_ethaddr_crc
HOSTCC tools/mkenvimage.o
HOSTCC tools/os_support.o
WRAP tools/lib/crc32.c
HOSTCC tools/lib/crc32.o
HOSTLD tools/mkenvimage
HOSTCC tools/aisimage.o
HOSTCC tools/atmelimage.o
WRAP tools/common/fdt_region.c
HOSTCC tools/common/fdt_region.o
WRAP tools/common/bootm.c
HOSTCC tools/common/bootm.o
HOSTCC tools/default_image.o
WRAP tools/lib/fdtdec_common.c
HOSTCC tools/lib/fdtdec_common.o
WRAP tools/lib/fdtdec.c
HOSTCC tools/lib/fdtdec.o
WRAP tools/common/image.c
HOSTCC tools/common/image.o
HOSTCC tools/imagetool.o
HOSTCC tools/imximage.o
HOSTCC tools/imx8image.o
HOSTCC tools/imx8mimage.o
HOSTCC tools/kwbimage.o
WRAP tools/lib/md5.c
HOSTCC tools/lib/md5.o
HOSTCC tools/lpc32xximage.o
HOSTCC tools/mxsimage.o
HOSTCC tools/omapimage.o
HOSTCC tools/pblimage.o
HOSTCC tools/pbl_crc32.o
HOSTCC tools/vybridimage.o
HOSTCC tools/stm32image.o
WRAP tools/lib/rc4.c
HOSTCC tools/lib/rc4.o
HOSTCC tools/rkcommon.o
HOSTCC tools/rkimage.o
HOSTCC tools/rksd.o
HOSTCC tools/rkspi.o
HOSTCC tools/socfpgaimage.o
HOSTCC tools/sunxi_egon.o
WRAP tools/lib/crc16.c
HOSTCC tools/lib/crc16.o
WRAP tools/lib/hash-checksum.c
HOSTCC tools/lib/hash-checksum.o
WRAP tools/lib/sha1.c
HOSTCC tools/lib/sha1.o
WRAP tools/lib/sha256.c
HOSTCC tools/lib/sha256.o
WRAP tools/lib/sha512.c
HOSTCC tools/lib/sha512.o
WRAP tools/common/hash.c
HOSTCC tools/common/hash.o
HOSTCC tools/ublimage.o
HOSTCC tools/zynqimage.o
HOSTCC tools/zynqmpimage.o
HOSTCC tools/zynqmpbif.o
HOSTCC tools/libfdt/fdt.o
HOSTCC tools/libfdt/fdt_ro.o
HOSTCC tools/libfdt/fdt_wip.o
HOSTCC tools/libfdt/fdt_sw.o
HOSTCC tools/libfdt/fdt_rw.o
HOSTCC tools/libfdt/fdt_strerror.o
HOSTCC tools/libfdt/fdt_empty_tree.o
HOSTCC tools/libfdt/fdt_addresses.o
HOSTCC tools/libfdt/fdt_overlay.o
HOSTCC tools/gpimage.o
HOSTCC tools/gpimage-common.o
HOSTCC tools/mtk_image.o
HOSTCC tools/dumpimage.o
HOSTLD tools/dumpimage
HOSTCC tools/mkimage.o
HOSTLD tools/mkimage
HOSTCC tools/proftool
HOSTCC tools/relocate-rela
HOSTCC tools/fdtgrep.o
HOSTLD tools/fdtgrep
HOSTCC tools/spl_size_limit
AR arch/arm/cpu/built-in.o
CC arch/arm/cpu/armv8/cpu.o
CC arch/arm/cpu/armv8/generic_timer.o
CC arch/arm/cpu/armv8/cache_v8.o
AS arch/arm/cpu/armv8/cache.o
AS arch/arm/cpu/armv8/exceptions.o
CC arch/arm/cpu/armv8/exception_level.o
AS arch/arm/cpu/armv8/tlb.o
AS arch/arm/cpu/armv8/transition.o
CC arch/arm/cpu/armv8/fwcall.o
CC arch/arm/cpu/armv8/cpu-dt.o
AS arch/arm/cpu/armv8/smccc-call.o
AR arch/arm/cpu/armv8/built-in.o
AS arch/arm/cpu/armv8/start.o
AS arch/arm/lib/crt0_64.o
AS arch/arm/lib/setjmp_aarch64.o
AS arch/arm/lib/relocate_64.o
CC arch/arm/lib/bootm-fdt.o
CC arch/arm/lib/bootm.o
CC arch/arm/lib/image.o
CC arch/arm/lib/bdinfo.o
CC arch/arm/lib/sections.o
CC arch/arm/lib/stack.o
CC arch/arm/lib/interrupts_64.o
CC arch/arm/lib/reset.o
CC arch/arm/lib/cache.o
CC arch/arm/lib/psci-dt.o
AR arch/arm/lib/built-in.o
AR arch/arm/lib/lib.a
AS arch/arm/lib/crt0_aarch64_efi.o
CC arch/arm/lib/reloc_aarch64_efi.o
CC arch/arm/mach-meson/board-common.o
CC arch/arm/mach-meson/sm.o
CC arch/arm/mach-meson/board-info.o
CC arch/arm/mach-meson/board-g12a.o
AR arch/arm/mach-meson/built-in.o
CC board/amlogic/u200/u200.o
AR board/amlogic/u200/built-in.o
AR cmd/arm/built-in.o
CC cmd/boot.o
CC cmd/bootm.o
CC cmd/help.o
CC cmd/panic.o
CC cmd/version.o
CC cmd/blk_common.o
CC cmd/source.o
CC cmd/blkcache.o
CC cmd/bootefi.o
CC cmd/booti.o
CC cmd/console.o
CC cmd/dm.o
CC cmd/echo.o
CC cmd/elf.o
CC cmd/exit.o
CC cmd/ext4.o
CC cmd/ext2.o
CC cmd/fat.o
CC cmd/fdt.o
CC cmd/flash.o
CC cmd/fs.o
CC cmd/gpio.o
CC cmd/itest.o
CC cmd/load.o
CC cmd/mem.o
CC cmd/mii.o
CC cmd/sleep.o
CC cmd/mmc.o
CC cmd/net.o
CC cmd/part.o
CC cmd/pinmux.o
CC cmd/pxe.o
CC cmd/pxe_utils.o
CC cmd/sysboot.o
CC cmd/test.o
CC cmd/unlz4.o
CC cmd/unzip.o
CC cmd/lzmadec.o
CC cmd/usb.o
CC cmd/disk.o
CC cmd/usb_mass_storage.o
CC cmd/ximg.o
CC cmd/regulator.o
CC cmd/nvedit.o
AR cmd/built-in.o
CC common/init/board_init.o
AR common/init/built-in.o
CC common/main.o
CC common/exports.o
CC common/hash.o
CC common/cli_hush.o
CC common/autoboot.o
CC common/board_f.o
CC common/board_r.o
CC common/board_info.o
CC common/bootm.o
CC common/bootm_os.o
CC common/fdt_support.o
CC common/miiphyutil.o
CC common/usb.o
CC common/usb_hub.o
CC common/usb_storage.o
CC common/iomux.o
CC common/edid.o
CC common/splash.o
CC common/menu.o
CC common/usb_kbd.o
CC common/cli_readline.o
CC common/cli_simple.o
CC common/console.o
CC common/dlmalloc.o
CC common/malloc_simple.o
CC common/image.o
CC common/image-fdt.o
CC common/memsize.o
CC common/stdio.o
CC common/cli.o
CC common/command.o
CC common/s_record.o
CC common/xyzModem.o
AR common/built-in.o
CC disk/part.o
CC disk/part_dos.o
CC disk/part_iso.o
CC disk/part_efi.o
AR disk/built-in.o
AR drivers/adc/built-in.o
AR drivers/ata/built-in.o
AR drivers/axi/built-in.o
CC drivers/block/blk-uclass.o
CC drivers/block/blkcache.o
AR drivers/block/built-in.o
AR drivers/bus/built-in.o
AR drivers/cache/built-in.o
AR drivers/clk/analogbits/built-in.o
AR drivers/clk/imx/built-in.o
CC drivers/clk/meson/g12a.o
CC drivers/clk/meson/g12a-ao.o
AR drivers/clk/meson/built-in.o
AR drivers/clk/tegra/built-in.o
AR drivers/clk/ti/built-in.o
CC drivers/clk/clk-uclass.o
CC drivers/clk/clk_fixed_rate.o
CC drivers/clk/clk_fixed_factor.o
AR drivers/clk/built-in.o
CC drivers/core/device.o
CC drivers/core/fdtaddr.o
CC drivers/core/lists.o
CC drivers/core/root.o
CC drivers/core/uclass.o
CC drivers/core/util.o
CC drivers/core/device-remove.o
CC drivers/core/simple-bus.o
CC drivers/core/dump.o
CC drivers/core/regmap.o
CC drivers/core/syscon-uclass.o
CC drivers/core/of_extra.o
CC drivers/core/ofnode.o
CC drivers/core/read_extra.o
AR drivers/core/built-in.o
CC drivers/crypto/fsl/sec.o
AR drivers/crypto/fsl/built-in.o
AR drivers/crypto/rsa_mod_exp/built-in.o
AR drivers/crypto/built-in.o
AR drivers/dfu/built-in.o
CC drivers/firmware/firmware-uclass.o
CC drivers/firmware/psci.o
AR drivers/firmware/built-in.o
CC drivers/input/key_matrix.o
CC drivers/input/input.o
CC drivers/input/keyboard-uclass.o
AR drivers/input/built-in.o
AR drivers/mailbox/built-in.o
AR drivers/memory/built-in.o
CC drivers/misc/pwrseq-uclass.o
AR drivers/misc/built-in.o
CC drivers/mmc/mmc.o
CC drivers/mmc/mmc-uclass.o
CC drivers/mmc/mmc_write.o
CC drivers/mmc/mmc-pwrseq.o
CC drivers/mmc/meson_gx_mmc.o
AR drivers/mmc/built-in.o
AR drivers/mtd/nand/built-in.o
AR drivers/mtd/onenand/built-in.o
AR drivers/mtd/spi/built-in.o
CC drivers/mtd/mtdcore.o
CC drivers/mtd/mtd_uboot.o
CC drivers/mtd/mtd-uclass.o
AR drivers/mtd/mtd.o
AR drivers/mtd/built-in.o
CC drivers/phy/phy-uclass.o
CC drivers/phy/meson-g12a-usb2.o
CC drivers/phy/meson-g12a-usb3-pcie.o
AR drivers/phy/built-in.o
AR drivers/phy/allwinner/built-in.o
AR drivers/phy/marvell/built-in.o
AR drivers/phy/rockchip/built-in.o
AR drivers/pinctrl/broadcom/built-in.o
CC drivers/pinctrl/meson/pinctrl-meson.o
CC drivers/pinctrl/meson/pinctrl-meson-axg-pmx.o
CC drivers/pinctrl/meson/pinctrl-meson-g12a.o
AR drivers/pinctrl/meson/built-in.o
AR drivers/pinctrl/nxp/built-in.o
CC drivers/pinctrl/pinctrl-uclass.o
CC drivers/pinctrl/pinctrl-generic.o
AR drivers/pinctrl/built-in.o
AR drivers/pwm/built-in.o
CC drivers/reset/reset-uclass.o
CC drivers/reset/reset-meson.o
AR drivers/reset/built-in.o
CC drivers/rng/rng-uclass.o
CC drivers/rng/meson-rng.o
AR drivers/rng/built-in.o
CC drivers/rtc/rtc-lib.o
AR drivers/rtc/built-in.o
AR drivers/scsi/built-in.o
AR drivers/smem/built-in.o
AR drivers/soc/built-in.o
AR drivers/sound/built-in.o
AR drivers/spmi/built-in.o
AR drivers/thermal/built-in.o
AR drivers/ufs/built-in.o
AR drivers/video/bridge/built-in.o
CC drivers/video/meson/meson_vpu.o
CC drivers/video/meson/meson_vpu_init.o
CC drivers/video/meson/meson_canvas.o
CC drivers/video/meson/meson_plane.o
CC drivers/video/meson/meson_venc.o
CC drivers/video/meson/meson_vclk.o
CC drivers/video/meson/meson_dw_hdmi.o
CC drivers/video/meson/simplefb_common.o
CC drivers/video/meson/../dw_hdmi.o
AR drivers/video/meson/built-in.o
AR drivers/video/sunxi/built-in.o
AR drivers/video/ti/built-in.o
CC drivers/video/backlight-uclass.o
CC drivers/video/console_normal.o
CC drivers/video/display-uclass.o
CC drivers/video/video-uclass.o
CC drivers/video/vidconsole-uclass.o
CC drivers/video/video_bmp.o
CC drivers/video/panel-uclass.o
CC drivers/video/simple_panel.o
AR drivers/video/built-in.o
AR drivers/watchdog/built-in.o
AR drivers/built-in.o
AR drivers/dma/ti/built-in.o
AR drivers/dma/built-in.o
CC drivers/gpio/gpio-uclass.o
AR drivers/gpio/built-in.o
AR drivers/i2c/built-in.o
AR drivers/net/mscc_eswitch/built-in.o
AR drivers/net/qe/built-in.o
AR drivers/net/ti/built-in.o
AR drivers/net/built-in.o
AR drivers/net/phy/built-in.o
AR drivers/power/built-in.o
AR drivers/power/battery/built-in.o
CC drivers/power/domain/power-domain-uclass.o
CC drivers/power/domain/meson-ee-pwrc.o
AR drivers/power/domain/built-in.o
AR drivers/power/fuel_gauge/built-in.o
AR drivers/power/mfd/built-in.o
AR drivers/power/pmic/built-in.o
CC drivers/power/regulator/regulator-uclass.o
CC drivers/power/regulator/regulator_common.o
CC drivers/power/regulator/fixed.o
AR drivers/power/regulator/built-in.o
CC drivers/serial/serial-uclass.o
CC drivers/serial/serial_meson.o
AR drivers/serial/built-in.o
CC drivers/spi/spi.o
AR drivers/spi/built-in.o
AR drivers/usb/cdns3/built-in.o
CC drivers/usb/common/common.o
AR drivers/usb/common/built-in.o
CC drivers/usb/dwc3/core.o
AR drivers/usb/dwc3/dwc3.o
CC drivers/usb/dwc3/dwc3-meson-g12a.o
AR drivers/usb/dwc3/built-in.o
AR drivers/usb/emul/built-in.o
AR drivers/usb/eth/built-in.o
CC drivers/usb/gadget/epautoconf.o
CC drivers/usb/gadget/config.o
CC drivers/usb/gadget/usbstring.o
CC drivers/usb/gadget/dwc2_udc_otg.o
CC drivers/usb/gadget/g_dnl.o
CC drivers/usb/gadget/f_mass_storage.o
AR drivers/usb/gadget/built-in.o
CC drivers/usb/gadget/udc/udc-uclass.o
AR drivers/usb/gadget/udc/built-in.o
CC drivers/usb/host/usb-uclass.o
CC drivers/usb/host/xhci.o
CC drivers/usb/host/xhci-mem.o
CC drivers/usb/host/xhci-ring.o
CC drivers/usb/host/xhci-dwc3.o
AR drivers/usb/host/built-in.o
AR drivers/usb/mtu3/built-in.o
AR drivers/usb/musb-new/built-in.o
AR drivers/usb/musb/built-in.o
AR drivers/usb/phy/built-in.o
AR drivers/usb/ulpi/built-in.o
CC env/common.o
CC env/env.o
CC env/attr.o
CC env/flags.o
CC env/callback.o
CC env/nowhere.o
AR env/built-in.o
CC fs/ext4/ext4fs.o
CC fs/ext4/ext4_common.o
CC fs/ext4/dev.o
AR fs/ext4/built-in.o
CC fs/fat/fat_write.o
AR fs/fat/built-in.o
CC fs/fs.o
CC fs/fs_internal.o
AR fs/built-in.o
AR lib/crypto/built-in.o
CC lib/efi_driver/efi_uclass.o
CC lib/efi_driver/efi_block_device.o
AR lib/efi_driver/built-in.o
CC lib/efi_loader/efi_bootmgr.o
CC lib/efi_loader/efi_boottime.o
CC lib/efi_loader/efi_helper.o
CC lib/efi_loader/efi_console.o
CC lib/efi_loader/efi_device_path.o
CC lib/efi_loader/efi_device_path_to_text.o
CC lib/efi_loader/efi_device_path_utilities.o
CC lib/efi_loader/efi_dt_fixup.o
CC lib/efi_loader/efi_file.o
CC lib/efi_loader/efi_hii.o
CC lib/efi_loader/efi_image_loader.o
CC lib/efi_loader/efi_load_options.o
CC lib/efi_loader/efi_memory.o
CC lib/efi_loader/efi_root_node.o
CC lib/efi_loader/efi_runtime.o
CC lib/efi_loader/efi_setup.o
CC lib/efi_loader/efi_string.o
CC lib/efi_loader/efi_unicode_collation.o
CC lib/efi_loader/efi_var_common.o
CC lib/efi_loader/efi_var_mem.o
CC lib/efi_loader/efi_var_file.o
CC lib/efi_loader/efi_variable.o
CC lib/efi_loader/efi_watchdog.o
CC lib/efi_loader/efi_gop.o
CC lib/efi_loader/efi_disk.o
CC lib/efi_loader/efi_net.o
CC lib/efi_loader/efi_smbios.o
CC lib/efi_loader/efi_rng.o
CC lib/efi_loader/efi_load_initrd.o
AR lib/efi_loader/built-in.o
CC lib/efi_loader/helloworld.o
AS lib/efi_loader/efi_crt0.o
CC lib/efi_loader/efi_reloc.o
CC lib/efi_loader/efi_freestanding.o
LD lib/efi_loader/helloworld_efi.so
OBJCOPY lib/efi_loader/helloworld.efi
CC lib/libfdt/fdt.o
CC lib/libfdt/fdt_ro.o
CC lib/libfdt/fdt_wip.o
CC lib/libfdt/fdt_strerror.o
CC lib/libfdt/fdt_sw.o
CC lib/libfdt/fdt_rw.o
CC lib/libfdt/fdt_empty_tree.o
CC lib/libfdt/fdt_addresses.o
CC lib/libfdt/fdt_overlay.o
AR lib/libfdt/built-in.o
CC lib/lzma/LzmaDec.o
CC lib/lzma/LzmaTools.o
AR lib/lzma/built-in.o
CC lib/zlib/zlib.o
AR lib/zlib/built-in.o
CC lib/charset.o
CC lib/crc8.o
CC lib/crc16.o
CC lib/smbios.o
CC lib/ldiv.o
CC lib/net_utils.o
CC lib/rc4.o
CC lib/list_sort.o
CC lib/hash-checksum.o
CC lib/gunzip.o
CC lib/lz4_wrapper.o
CC lib/fdtdec_common.o
CC lib/fdtdec.o
CC lib/qsort.o
CC lib/hashtable.o
CC lib/errno.o
CC lib/display_options.o
CC lib/crc32.o
CC lib/ctype.o
CC lib/div64.o
CC lib/hang.o
CC lib/linux_compat.o
CC lib/linux_string.o
CC lib/lmb.o
CC lib/membuff.o
CC lib/slre.o
CC lib/string.o
CC lib/tables_csum.o
CC lib/time.o
CC lib/hexdump.o
CC lib/uuid.o
CC lib/rand.o
CC lib/panic.o
CC lib/vsprintf.o
CC lib/strto.o
CC lib/date.o
CC lib/elf.o
AR lib/built-in.o
CC net/arp.o
CC net/bootp.o
CC net/eth_legacy.o
CC net/eth_common.o
CC net/net.o
CC net/nfs.o
CC net/ping.o
CC net/tftp.o
AR net/built-in.o
LDS u-boot.lds
LD u-boot
OBJCOPY u-boot.srec
OBJCOPY u-boot-nodtb.bin
RELOC u-boot-nodtb.bin
DTC arch/arm/dts/meson-axg-s400.dtb
DTC arch/arm/dts/meson-gxbb-nanopi-k2.dtb
DTC arch/arm/dts/meson-gxbb-odroidc2.dtb
DTC arch/arm/dts/meson-gxbb-p200.dtb
DTC arch/arm/dts/meson-gxbb-p201.dtb
DTC arch/arm/dts/meson-gxbb-wetek-hub.dtb
DTC arch/arm/dts/meson-gxbb-wetek-play2.dtb
DTC arch/arm/dts/meson-gxl-s805x-libretech-ac.dtb
DTC arch/arm/dts/meson-gxl-s905d-libretech-pc.dtb
DTC arch/arm/dts/meson-gxl-s905x-khadas-vim.dtb
DTC arch/arm/dts/meson-gxl-s905x-libretech-cc.dtb
DTC arch/arm/dts/meson-gxl-s905x-libretech-cc-v2.dtb
DTC arch/arm/dts/meson-gxl-s905x-p212.dtb
DTC arch/arm/dts/meson-gxm-khadas-vim2.dtb
DTC arch/arm/dts/meson-gxm-s912-libretech-pc.dtb
DTC arch/arm/dts/meson-gxm-wetek-core2.dtb
DTC arch/arm/dts/meson-g12a-radxa-zero.dtb
DTC arch/arm/dts/meson-g12a-sei510.dtb
DTC arch/arm/dts/meson-g12a-u200.dtb
DTC arch/arm/dts/meson-g12b-a311d-khadas-vim3.dtb
DTC arch/arm/dts/meson-g12b-gtking.dtb
DTC arch/arm/dts/meson-g12b-gtking-pro.dtb
DTC arch/arm/dts/meson-g12b-gsking-x.dtb
DTC arch/arm/dts/meson-g12b-odroid-n2.dtb
DTC arch/arm/dts/meson-g12b-odroid-n2-plus.dtb
DTC arch/arm/dts/meson-sm1-khadas-vim3l.dtb
DTC arch/arm/dts/meson-sm1-odroid-c4.dtb
DTC arch/arm/dts/meson-sm1-odroid-hc4.dtb
DTC arch/arm/dts/meson-sm1-sei610.dtb
SHIPPED dts/dt.dtb
CAT u-boot-dtb.bin
COPY u-boot.bin
SYM u-boot.sym
COPY u-boot.dtb
LDS u-boot-elf.lds
LD u-boot.elf
===================== WARNING ======================
This board does not use CONFIG_DM_ETH (Driver Model
for Ethernet drivers). Please update the board to use
CONFIG_DM_ETH before the v2020.07 release. Failure to
update by the deadline may result in board removal.
See doc/driver-model/migration.rst for more info.
====================================================
CFGCHK u-boot.cfg
root@debian:/home/pol/u-boot# cp u-boot.bin ../fip/radxa-zero/bl33.bin
root@debian:/home/pol/u-boot# cd ../fip/radxa-zero
root@debian:/home/pol/fip/radxa-zero# make
./blx_fix.sh bl2.bin zero_tmp bl2_zero.bin acs.bin bl21_zero.bin bl2_new.bin bl2
4544+0 records in
4544+0 records out
4544 bytes (4.5 kB, 4.4 KiB) copied, 0.00390817 s, 1.2 MB/s
2288+0 records in
2288+0 records out
2288 bytes (2.3 kB, 2.2 KiB) copied, 0.00195729 s, 1.2 MB/s
./aml_encrypt_g12a --bl2sig --input bl2_new.bin --output bl2.n.bin.sig
./blx_fix.sh bl30.bin zero_tmp bl30_zero.bin bl301.bin bl301_zero.bin bl30_new.bin bl30
40+0 records in
40+0 records out
40 bytes copied, 0.000221595 s, 181 kB/s
5422+0 records in
5422+0 records out
5422 bytes (5.4 kB, 5.3 KiB) copied, 0.00352714 s, 1.5 MB/s
./aml_encrypt_g12a --bl30sig --input bl30_new.bin --output bl30_new.bin.g12a.enc --level v3
./aml_encrypt_g12a --bl3sig --input bl30_new.bin.g12a.enc --output bl30_new.bin.enc --level v3 --type bl30
./aml_encrypt_g12a --bl3sig --input bl31.img --output bl31.img.enc --level v3 --type bl31
./aml_encrypt_g12a --bl3sig --input bl33.bin --output bl33.bin.enc --level v3 --type bl33
# --compress lz4
./aml_encrypt_g12a --bootmk --output u-boot.bin --level v3 \
--bl2 bl2.n.bin.sig --bl30 bl30_new.bin.enc --bl31 bl31.img.enc --bl33 bl33.bin.enc \
--ddrfw1 ddr4_1d.fw --ddrfw2 ddr4_2d.fw --ddrfw3 ddr3_1d.fw --ddrfw4 piei.fw \
--ddrfw5 lpddr4_1d.fw --ddrfw6 lpddr4_2d.fw --ddrfw7 diag_lpddr4.fw --ddrfw8 aml_ddr.fw
This are devices that should be redirected from Windows to VirtualBox on next steps so Debian could find radxa zero board and flash the bootloader (otherwise you will get errors):
reboot board and press USB button (add Amilogic GX-CHIP to VirtualBox)
lsusb
Bus 001 Device 008: ID 1b8e:c003 Amlogic, Inc. GX-CHIP
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
If Amlogic, Inc. GX-CHIP is present:
boot-g12.py /home/pol/fip/radxa-zero/u-boot.bin
Output
root@debian:/home/pol/fip/radxa-zero# boot-g12.py /home/pol/fip/radxa-zero/u-boot.bin
Firmware Version :
ROM: 3.2 Stage: 0.0
Need Password: 0 Password OK: 1
Writing /home/pol/fip/radxa-zero/u-boot.bin at 0xfffa0000…
[DONE]
Running at 0xfffa0000…
[DONE]
AMLC dataSize=16384, offset=65536, seq=0…
[DONE]
AMLC dataSize=49152, offset=393216, seq=1…
[DONE]
AMLC dataSize=16384, offset=229376, seq=2…
[DONE]
AMLC dataSize=49152, offset=245760, seq=3…
[DONE]
AMLC dataSize=49152, offset=294912, seq=4…
[DONE]
AMLC dataSize=16384, offset=65536, seq=5…
[DONE]
AMLC dataSize=1324912, offset=81920, seq=6…
[DONE]
[BL2 END]
reboot board and press USB button once more (Amilogic GX-CHIP to VirtualBox should be added)
wget https://dl.radxa.com/zero/images/loader/rz-fastboot-loader.bin
boot-g12.py /home/pol/fip/radxa-zero/rz-fastboot-loader.bin
Output
root@debian:/home/pol/fip/radxa-zero# boot-g12.py /home/pol/fip/radxa-zero/rz-fastboot-loader.bin
Firmware Version :
ROM: 3.2 Stage: 0.0
Need Password: 0 Password OK: 1
Writing /home/pol/fip/radxa-zero/rz-fastboot-loader.bin at 0xfffa0000…
[DONE]
Running at 0xfffa0000…
[DONE]
AMLC dataSize=16384, offset=65536, seq=0…
[DONE]
AMLC dataSize=49152, offset=393216, seq=1…
[DONE]
AMLC dataSize=16384, offset=229376, seq=2…
[DONE]
AMLC dataSize=49152, offset=245760, seq=3…
[DONE]
AMLC dataSize=49152, offset=294912, seq=4…
[DONE]
AMLC dataSize=16384, offset=65536, seq=5…
[DONE]
AMLC dataSize=1406320, offset=81920, seq=6…
[DONE]
[BL2 END]
make shure board gets in fastboot mode and host see it (add Radxa USB download gadget to VirtualBox)
fastboot flash 0x200 /home/pol/fip/radxa-zero/u-boot.bin
fastboot reboot
Output
root@debian:/home/pol/fip/radxa-zero# fastboot flash 0x200 /home/pol/fip/radxa-zero/u-boot.bin
< waiting for any device >
Sending ‘0x200’ (1373 KB) OKAY [ 0.522s]
Writing ‘0x200’ OKAY [ 0.080s]
Finished. Total time: 0.637s
root@debian:/home/pol/fip/radxa-zero# fastboot reboot
Rebooting OKAY [ 0.012s]
Finished. Total time: 0.941s
Switch board power and you are good to go.
Now you have your own environment to edit some Linux stuff. I hope this instruction was helpful to someone. If you get errors on some stages - fill free to asking the questions cuz that forums are for! 
If you need *bin files only. Link.
PS
Creation of this instruction inspired by some post-soviet trolls offended by life and people I guess, they are disrespecting and discrediting open source and knowledge sharing philosophy… So let’s show them that they are wrong… 