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

$exportCROSS_COMPILE=aarch64-none-elf-
$makejethub_j100_defconfig
$make

U-Boot Signing with Pre-Built FIP repo

$gitclonehttps://github.com/LibreELEC/amlogic-boot-fip--depth=1
$cdamlogic-boot-fip
$mkdirmy-output-dir
$./build-fip.shjethub-j100/path/to/u-boot/u-boot.binmy-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:

$gitclonehttps://github.com/jethome-ru/jethub-aml-toolsjethub-u-boot
$cdjethub-u-boot
$exportFIPDIR=$PWD

Go back to the mainline U-Boot source tree then:

$mkdirfip
$cp$FIPDIR/j100/bl2.binfip/
$cp$FIPDIR/j100/acs.binfip/
$cp$FIPDIR/j100/bl21.binfip/
$cp$FIPDIR/j100/bl30.binfip/
$cp$FIPDIR/j100/bl301.binfip/
$cp$FIPDIR/j100/bl31.imgfip/
$cpu-boot.binfip/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.pycfip/bl2.binfip/bl2_acs.binfip/acs.bin0
$$FIPDIR/blx_fix.sh\
fip/bl2_acs.bin\
fip/zero_tmp\
fip/bl2_zero.bin\
fip/bl21.bin\
fip/bl21_zero.bin\
fip/bl2_new.bin\
bl2
$$FIPDIR/j100/aml_encrypt_axg--bl3sig--inputfip/bl30_new.bin\
--outputfip/bl30_new.bin.enc\
--levelv3--typebl30
$$FIPDIR/j100/aml_encrypt_axg--bl3sig--inputfip/bl31.img\
--outputfip/bl31.img.enc\
--levelv3--typebl31
$$FIPDIR/j100/aml_encrypt_axg--bl3sig--inputfip/bl33.bin--compresslz4\
--outputfip/bl33.bin.enc\
--levelv3--typebl33
$$FIPDIR/j100/aml_encrypt_axg--bl2sig--inputfip/bl2_new.bin\
--outputfip/bl2.n.bin.sig
$$FIPDIR/j100/aml_encrypt_axg--bootmk\
--outputfip/u-boot.bin\
--bl2fip/bl2.n.bin.sig\
--bl30fip/bl30_new.bin.enc\
--bl31fip/bl31.img.enc\
--bl33fip/bl33.bin.enc--levelv3

Then write U-Boot to SD or eMMC with:

$DEV=/dev/boot_device
$ddif=fip/u-boot.bin.sd.binof=$DEVconv=fsync,notruncbs=512skip=1seek=1
$ddif=fip/u-boot.bin.sd.binof=$DEVconv=fsync,notruncbs=1count=440