U-Boot for JetHub J100/J110 (A113X)
JetHome Jethub D1/D1+ (http://jethome.ru/jethub-d1p) is a home automation controller device manufactured by JetHome with the following specifications:
Amlogic A113X (ARM Cortex-A53) quad-core up to 1.5GHz
no video out
512MB/1GB DDR3 or 2GB DDR4 SDRAM
8/16/32GB eMMC flash
1 x USB 2.0
1 x 10/100Mbps ethernet
WiFi / Bluetooth one from: - AMPAK AP6255 (Broadcom BCM43455) IEEE 802.11a/b/g/n/ac, Bluetooth 4.2 - RTL8822CS IEEE 802.11a/b/g/n/ac, Bluetooth 5.0 - Amlogic W155S1 WiFi5 IEEE 802.11a/b/g/n/ac, Bluetooth 5.2
2 x gpio LEDS
GPIO user Button
DC source with a voltage of 9 to 56 V / Passive POE
DIN Rail Mounting case
The basic version also has:
Zigbee module one from: - TI CC2538 + CC2592 Zigbee 3.0 Wireless - TI CC2652P1 Zigbee 3.0 Wireless - Silicon Labs EFT32MG21 Zigbee 3.0/Thread Wireless
1 x 1-Wire
2 x RS-485
4 x dry contact digital GPIO inputs
3 x relay GPIO outputs
U-Boot Compilation
$ export CROSS_COMPILE=aarch64-none-elf-
$ make jethub_j100_defconfig
$ make
U-Boot Signing with Pre-Built FIP repo
$ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
$ cd amlogic-boot-fip
$ mkdir my-output-dir
$ ./build-fip.sh jethub-j100 /path/to/u-boot/u-boot.bin my-output-dir
U-Boot Manual Signing
Amlogic does not provide sources for the firmware and tools needed to create a bootloader image so it is necessary to obtain binaries from sources published by the board vendor:
$ git clone https://github.com/jethome-ru/jethub-aml-tools jethub-u-boot
$ cd jethub-u-boot
$ export FIPDIR=$PWD
Go back to the mainline U-Boot source tree then:
$ mkdir fip
$ cp $FIPDIR/j100/bl2.bin fip/
$ cp $FIPDIR/j100/acs.bin fip/
$ cp $FIPDIR/j100/bl21.bin fip/
$ cp $FIPDIR/j100/bl30.bin fip/
$ cp $FIPDIR/j100/bl301.bin fip/
$ cp $FIPDIR/j100/bl31.img fip/
$ cp u-boot.bin fip/bl33.bin
$ $FIPDIR/blx_fix.sh \
fip/bl30.bin \
fip/zero_tmp \
fip/bl30_zero.bin \
fip/bl301.bin \
fip/bl301_zero.bin \
fip/bl30_new.bin \
bl30
$ $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
$ $FIPDIR/blx_fix.sh \
fip/bl2_acs.bin \
fip/zero_tmp \
fip/bl2_zero.bin \
fip/bl21.bin \
fip/bl21_zero.bin \
fip/bl2_new.bin \
bl2
$ $FIPDIR/j100/aml_encrypt_axg --bl3sig --input fip/bl30_new.bin \
--output fip/bl30_new.bin.enc \
--level v3 --type bl30
$ $FIPDIR/j100/aml_encrypt_axg --bl3sig --input fip/bl31.img \
--output fip/bl31.img.enc \
--level v3 --type bl31
$ $FIPDIR/j100/aml_encrypt_axg --bl3sig --input fip/bl33.bin --compress lz4 \
--output fip/bl33.bin.enc \
--level v3 --type bl33
$ $FIPDIR/j100/aml_encrypt_axg --bl2sig --input fip/bl2_new.bin \
--output fip/bl2.n.bin.sig
$ $FIPDIR/j100/aml_encrypt_axg --bootmk \
--output fip/u-boot.bin \
--bl2 fip/bl2.n.bin.sig \
--bl30 fip/bl30_new.bin.enc \
--bl31 fip/bl31.img.enc \
--bl33 fip/bl33.bin.enc --level v3
Then write U-Boot to SD or eMMC with:
$ DEV=/dev/boot_device
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440