Amlogic Quad-core A55
RAM: 4GB
ROM: 64GB
WIFI: 2.4/5Ghz
2A@5V DC

F3X S905X3

internal photos:

https://fccid.io/2AVBM-A95XF3AIR/Internal-Photos/Internal-photos-4583382.pdf

armbian

https://www.armbian.com/amlogic-s9xx-tv-box/

boot from sd card doesn't work, button is hidden inside phone connector, and is very stiff.

scdard

dpavlin@nuc:~$ sudo fdisk -l /dev/mmcblk0
Disk /dev/mmcblk0: 14.88 GiB, 15978201088 bytes, 31207424 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x2a327079

Device         Boot   Start     End Sectors  Size Id Type
/dev/mmcblk0p1         8192 1056767 1048576  512M ea Linux extended boot
/dev/mmcblk0p2      1056768 4218879 3162112  1.5G 83 Linux


dpavlin@nuc:~$ sudo mount /dev/mmcblk0p1 /tmp/a95x-boot/
[Tue Sep  2 19:53:40 2025] mmc0: cannot verify signal voltage switch
dpavlin@nuc:~$ cd /tmp/a95x-boot/
dpavlin@nuc:/tmp/a95x-boot$ [Tue Sep  2 19:53:50 2025] mmc0: cannot verify signal voltage switch

dpavlin@nuc:/tmp/a95x-boot$ ls
[Tue Sep  2 19:53:54 2025] mmc0: cannot verify signal voltage switch
aml_autoscript                  dtb              initrd.img-6.12.43-current-meson64  u-boot-s905x2-s922     uInitrd
boot.bmp                        emmc_autoscript  s905_autoscript                     u-boot-s905x3
build-u-boot                    extlinux         System.map-6.12.43-current-meson64  u-boot-s905x3-ugoosx3
config-6.12.43-current-meson64  Image            u-boot-s905                         u-boot-s905x-s912

root@nuc:/tmp/a95x-boot/extlinux# ls -al ../dtb/amlogic/*x3*
-rwxr-xr-x 1 root root 40278 Aug 22 05:10 ../dtb/amlogic/meson-gxl-s905w-tx3-mini.dtb
-rwxr-xr-x 1 root root 77285 Aug 22 05:10 ../dtb/amlogic/meson-sm1-ugoos-x3.dtb

root@nuc:/tmp/a95x-boot/extlinux# vi extlinux.conf

root@nuc:/tmp/a95x-boot# cp  u-boot-s905x3-ugoosx3 u-boot.ext

dead

device draws only 70mA from 5.2V 2A power supply (verified using DPS5005).

https://photos.google.com/photo/AF1QipMGlbI49ukEsx0OgqaPwIROT3cjvUe-7qfEOt3-

LED display

this device has interesting DVD-like LED display with HT1628 DVD driver chip and some transistors (maybe level shifters since chip is 5V ?)

https://photos.google.com/photo/AF1QipOfJtafYiOvS0QW2uX-rFwruJ3wCz7pZtsZ6qNq

LED strip

https://photos.google.com/photo/AF1QipMqXN8R4eBN2uQCzwUvn2ZtoBKnsJgQAE1ctr9J

it has three wire led strip of 15 leds (ws2812 meybe?) with three wires and SOIC8 chip on it.

serial

4 pins on bottom of board

1. GND (pin marked with square on board)
2. TX
3. RX
4. 3V3 (?)

serial output:

SM1:BL:511f6b:81ca2f;FEAT:B2F839B2:202B2060;POC:F;RCY:0;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:20000;USB:8;
LOOP:1;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:20000;USB:8;
LOOP:2;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:20000;USB:8;
LOOP:3;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:20000;USB:8;
LOOP:4;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:20000;USB:8;
LOOP:5;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:20000;USB:8;
LOOP:6;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:20000;USB:8;

with sd card inserted

SM1:BL:511f6b:81ca2f;FEAT:B2F839B2:202B2060;POC:F;RCY:0;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:0;SD:0;READ:0;CHK:1F;USB:8;
LOOP:1;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:0;SD:0;READ:0;CHK:1F;USB:8;
LOOP:2;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:0;SD:0;READ:0;CHK:1F;USB:8;
LOOP:3;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:0;SD:0;READ:0;CHK:1F;USB:8;
LOOP:4;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:0;SD:0;READ:0;CHK:1F;USB:8;
SM1:BL:511f6b:81ca2f;FEAT:B2F839B2:202B2060;POC:F;RCY:0;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:0;SD:0;READ:0;CHK:1F;USB:8;
SM1:BL:511f6b:81ca2f;FEAT:B2F839B2:202B2060;POC:F;RCY:0;EMMC:0;READ:0;CHK:1F;READ:0;CHK:1F;READ:0;CHK:1F;SD?:0;SD:0;READ:0;CHK:1F;USB:8;

u-boot

https://github.com/hexdump0815/u-boot-misc/blob/master/readme.gxy

usb boot

https://github.com/superna9999/pyamlboot/tree/master

soc bypass

https://fredericb.info/2016/10/amlogic-s905-soc-bypassing-not-so.html

android image unpack in search for bootloader

dpavlin@nuc:/nuc/amlogic/utils$ git remote -v
origin	https://github.com/khadas/utils.git (fetch)
origin	https://github.com/khadas/utils.git (push)


dpavlin@nuc:/nuc/amlogic/utils$ ./aml_image_v2_packer -d ~/Downloads/a95x/A95X_F3_AIR_20191024senk.img A95X_F3_AIR_20191024senk
[Msg]Image package version 0x2
[Msg]Unpack item [USB         ,              DDR] to (A95X_F3_AIR_20191024senk/DDR.USB) size:1330032 bytes
[Msg]Unpack item [USB         ,          DDR_ENC] to (A95X_F3_AIR_20191024senk/DDR_ENC.USB) size:65536 bytes
[Msg]Backup item [USB         ,            UBOOT] backItemId[0][USB, DDR]
[Msg]Unpack item [USB         ,        UBOOT_ENC] to (A95X_F3_AIR_20191024senk/UBOOT_ENC.USB) size:1330176 bytes
[Msg]Unpack item [PARTITION   ,         _aml_dtb] to (A95X_F3_AIR_20191024senk/_aml_dtb.PARTITION) size:79872 bytes
[Msg]Unpack item [UBOOT       ,     aml_sdc_burn] to (A95X_F3_AIR_20191024senk/aml_sdc_burn.UBOOT) size:1330544 bytes
[Msg]Unpack item [UBOOT.ENC   ,     aml_sdc_burn] to (A95X_F3_AIR_20191024senk/aml_sdc_burn.UBOOT.ENC) size:1330688 bytes
[Msg]Unpack item [ini         ,     aml_sdc_burn] to (A95X_F3_AIR_20191024senk/aml_sdc_burn.ini) size:602 bytes
[Msg]Unpack item [PARTITION   ,             boot] to (A95X_F3_AIR_20191024senk/boot.PARTITION) size:9620480 bytes
[Msg]Unpack item [PARTITION   ,       bootloader] to (A95X_F3_AIR_20191024senk/bootloader.PARTITION) size:1330176 bytes
[Msg]Unpack item [PARTITION   ,             dtbo] to (A95X_F3_AIR_20191024senk/dtbo.PARTITION) size:438 bytes
[Msg]Unpack item [PARTITION   ,             logo] to (A95X_F3_AIR_20191024senk/logo.PARTITION) size:1020176 bytes
[Msg]Unpack item [dtb         ,           meson1] to (A95X_F3_AIR_20191024senk/meson1.dtb) size:78383 bytes
[Msg]Backup item [dtb         ,       meson1_ENC] backItemId[4][PARTITION, _aml_dtb]
[Msg]Unpack item [PARTITION   ,              odm] to (A95X_F3_AIR_20191024senk/odm.PARTITION) size:536652 bytes
[Msg]Unpack item [conf        ,         platform] to (A95X_F3_AIR_20191024senk/platform.conf) size:155 bytes
[Msg]Unpack item [PARTITION   ,          product] to (A95X_F3_AIR_20191024senk/product.PARTITION) size:14745676 bytes
[Msg]Unpack item [PARTITION   ,         recovery] to (A95X_F3_AIR_20191024senk/recovery.PARTITION) size:16307200 bytes
[Msg]Unpack item [PARTITION   ,           system] to (A95X_F3_AIR_20191024senk/system.PARTITION) size:1377898716 bytes
[Msg]Unpack item [PARTITION   ,           vbmeta] to (A95X_F3_AIR_20191024senk/vbmeta.PARTITION) size:4096 bytes
[Msg]Unpack item [PARTITION   ,           vendor] to (A95X_F3_AIR_20191024senk/vendor.PARTITION) size:204157052 bytes
[Msg]Write config file "A95X_F3_AIR_20191024senk/image.cfg" OK!
Image unpack OK!

let's write bootloader to sdcard

root@nuc:/nuc/amlogic/utils/A95X_F3_AIR_20191024senk# ~dpavlin/dd.sh aml_sdc_burn.UBOOT.ENC /dev/mmcblk0
+ dd iflag=fullblock oflag=direct conv=fsync status=progress bs=1M if=aml_sdc_burn.UBOOT.ENC of=/dev/mmcblk0
1+1 records in
1+1 records out
1330688 bytes (1.3 MB, 1.3 MiB) copied, 0.491506 s, 2.7 MB/s

power up, 230-300 mA power draw, leds are cyan with blue vertical strip, passing from right to left, and LCD screen has boot on it.

Xtreme PC LXD8541

Chip PC Linux-based Thinx OS

Product Specifications Xtreme PC LXD8541

Processor • Marvell Dove, Armada 510 800MHZ https://www.kernel.org/doc/html/v5.14/arm/marvell.html#dove-family-application-processor

Memory • 1GB, DDR3 @ 800MHz

Mass Storage • 2GB, High reliability eMMC NAND flash • Optional externally accessed MicroSD slot

Display Support • One DVI-I port
• Display Data Control (DDC) for automatic setting of resolution and refresh rate

Resolutions • Single: Up to 1920x1200 Pixels @ true color (32 bit)
• Dual: Up to 1920x1080 Pixels @ true color (24 bit)

Video Player • Various video codecs, including: DivX HD, H.264 (MPEG4), WMV9/VC1
• Up to 1080p local browser Flash support

Audio Support • High Definition Audio Codec
• Stereo Audio Output - 3 mm (1/8 inch) Audio-Out Jack; 16-bit Stereo, 96KHz

sample rate
• Microphone Input - 3 mm (1/8 inch), 8 bit
• Software volume / mute control

Input / Output ports • 6 x USB 2.0 ports (2 front, 4 back)

serial

https://forum.doozan.com/read.php?2,67954,76099#msg-76099

 Koen Re: Debian on Chip PC LXD8941 January 04, 2019 02:33PM

Inside there is both a 4 pin and a 6 pin header. The 4 pin is the UART connection. With the power button towards you and the DVI connection away from you the connections are as follows: GND, TX, RX, VCC (from left to right).

kernel

Linux Kernel 6.6.2 MVEBU package and Debian armhf rootfs

https://forum.doozan.com/read.php?2,32146

mkfs.ext3 -L rootfs /dev/sda1
mount /dev/sda1 /mnt/sda1/
cd /mnt/sda1/
tar xvf /nuc/armada/Debian-6.6.2-mvebu-tld-1-rootfs-bodhi.tar.bz2

3. Create uImage with DTB appended.

root@nuc:/mnt/sda1# cd boot/
root@nuc:/mnt/sda1/boot# cp -a uImage uImage.orig
root@nuc:/mnt/sda1/boot# cp -a zImage-6.6.2-mvebu-tld-1 zImage.fdt
root@nuc:/mnt/sda1/boot# cat dts/dove-chip-lxd8941.dtb >> zImage.fdt
root@nuc:/mnt/sda1/boot# mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000 -n Linux-6.6.2-mvebu-tld-1 -d zImage.fdt uImage
Image Name:   Linux-6.6.2-mvebu-tld-1
Created:      Tue Dec 19 18:00:34 2023
Image Type:   ARM Linux Kernel Image (uncompressed)
Data Size:    5193798 Bytes = 5072.07 KiB = 4.95 MiB
Load Address: 00008000
Entry Point:  00008000

insert usb stick into back 4 usb ports, front 2 won't find storage device on usb

abort u-boot over serial and issue boot from usb:

setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 ${mtdparts} earlyprintk=serial
usb start; ext2load usb 0:1 0x3000000 /boot/uImage; ext2load usb 0:1 0x4000000 /boot/uInitrd
bootm 0x3000000 0x4000000

video output

DRM and framebuffer are not currently (as of 6.6) supported in upstream kernel according to messages at
forum, but dove-chip-lxd8941.dts doesn't include lcd power and dove-hp-t5335z.dts does.

Let's try to boot with this dts but this does not work.

u-boot enviroment

fw_printenv

root@dove:~# cat /etc/fw_env.config
# MTD device name       Device offset   Env. size       Flash sector size       Number of sectors
/dev/mtd1 0x000000 0x010000

setup boot from usb

root@dove:~# fw_setenv bootusb 'setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 ${mtdparts} earlyprintk=serial ; usb start; ext2load usb 0:1 0x3000000 /boot/uImage; ext2load usb 0:1 0x4000000 /boot/uInitrd ; bootm 0x3000000 0x4000000'

root@dove:~# fw_printenv bootcmd
bootcmd=run bootmmc
root@dove:~# fw_setenv bootcmd bootusb

fw_setenv this doesn't work from booted debian system, re-try over serial on u-boot prompt:

MIC>> printenv usbboot
usbboot=usb start; sleep 3; ext2load usb 0:1 0x2000000 /boot/uImage; run usbargs;bootm 0x2000000
MIC>> setenv usbboot 'setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 ${mtdparts} earlyprintk=serial ; usb start; ext2load usb 0:1 0x3000000 /boot/uImage; ext2load usb 0:1 0x4000000 /boot/uInitrd ; bootm 0x3000000 0x4000000'
MIC>> printenv usbboot
usbboot=setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 ${mtdparts} earlyprintk=serial ; usb start; ext2load usb 0:1 0x3000000 /boot/uImage; ext2load usb 0:1 0x4000000 /boot/uInitrd ; bootm 0x3000000 0x4000000
MIC>> saveenv
Saving Environment to SPI Flash...
Erasing 0xc0000 - 0xd0000:      [Done]
Writing to SPI flash:           [Done]

MIC>> setenv bootcmd run usbboot
MIC>> saveenv
Saving Environment to SPI Flash...
Erasing 0xc0000 - 0xd0000:      [Done]
Writing to SPI flash:           [Done]

power button

seemes like it's on gpio 25

apt install gpiod

root@dove:/home/dpavlin# gpioget 0 0 1 2 3 4 5 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
1 0 1 1 0 0 0 0 1 1 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0
root@dove:/home/dpavlin# gpioget 0 0 1 2 3 4 5 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
1 0 1 1 0 0 0 0 1 1 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0

root@dove:/home/dpavlin# gpiomon 0 25
event: FALLING EDGE offset: 25 timestamp: [    1466.369262333]
event: FALLING EDGE offset: 25 timestamp: [    1466.632278096]
event:  RISING EDGE offset: 25 timestamp: [    1467.188375662]
event:  RISING EDGE offset: 25 timestamp: [    1468.390585489]
event: FALLING EDGE offset: 25 timestamp: [    1470.143645190]
event:  RISING EDGE offset: 25 timestamp: [    1471.752436499]
event: FALLING EDGE offset: 25 timestamp: [    1473.233499601]
event:  RISING EDGE offset: 25 timestamp: [    1474.560678725]

Board sticker: M8S PRO R4 S912 3G 32G DDR4 DQ

It doesn't have button soldered, it works like power button in android

Serial port is marked on bottom of board (tx/rx are from cpu perspective)

probably: https://www.geekbuying.com/item/MECOOL-M8S-PRO-S912-KODI-17-0-4K-HDR10-3GB-DDR4-32GB-eMMC-TV-Box-380737.html

Android info

Android 7.1 bootlog from serial: m8s-android-bootlog.txt.gz

U-Boot 2015.01-g9331ff1-dirty (Mar 15 2018 - 16:16:24)

DRAM:  3 GiB
...
        aml_dt soc: gxm platform: q20xrmii variant: 3g
        dtb 0 soc: gxm   plat: q20xrmii   vari: 2g
        dtb 1 soc: gxm   plat: q20xrmii   vari: 3g
      Find match dtb: 1
...
parts: 10
00:      logo	0000000002000000 1
01:  recovery	0000000002000000 1
02:       rsv	0000000000800000 1
03:       tee	0000000000800000 1
04:     crypt	0000000002000000 1
05:      misc	0000000002000000 1
06:      boot	0000000002000000 1
07:    system	0000000080000000 1
08:     cache	0000000020000000 2
09:      data	ffffffffffffffff 4

M8SPRO:/ # uname -a
Linux localhost 3.14.29 #46 SMP PREEMPT Thu Apr 12 19:43:12 CST 2018 armv8l

M8SPRO:/ # cat /proc/cmdline
rootfstype=ramfs init=/init console=ttyS0,115200 no_console_suspend earlyprintk=aml-uart,0xc81004c0 ramoops.pstore_en=1 ramoops.record_size=0x8000 ramoops.console_size=0x4000 androidboot.selinux=permissive logo=osd1,loaded,0x3d800000,1080p60hz maxcpus=8 vout=1080p60hz,enable hdmimode=1080p60hz cvbsmode=576cvbs hdmitx= cvbsdrv=0 pq= androidboot.firstboot=0 jtag=apao androidboot.hardware=amlogic mac=D0:76:58:0E:63:A3 androidboot.mac=D0:76:58:0E:63:A3 androidboot.slot_suffix=_a buildvariant=userdebug

M8SPRO:/ # cat /proc/cpuinfo
Processor	: AArch64 Processor rev 4 (aarch64)
processor	: 0
processor	: 1
processor	: 2
processor	: 3
processor	: 4
processor	: 5
processor	: 6
processor	: 7
Features	: fp asimd evtstrm aes pmull sha1 sha2 crc32 wp half thumb fastmult vfp edsp neon vfpv3 tlsi vfpv4 idiva idivt 
CPU implementer	: 0x41
CPU architecture: 8
CPU variant	: 0x0
CPU part	: 0xd03
CPU revision	: 4

Hardware	: Amlogic
Serial		: 220a82006da41365fedf301742726826

M8SPRO:/ # free
		total        used        free      shared     buffers
Mem:       2876604416  2210639872   665964544           0    31326208
-/+ buffers/cache:     2179313664   697290752
Swap:       524283904           0   524283904

M8SPRO:/ # df
ilesystem        1K-blocks    Used Available Use% Mounted on
mpfs               1404592     504   1404088   1% /dev
tmpfs               1404592       0   1404592   0% /mnt
/dev/block/system   2031440  973788   1057652  48% /system
/dev/block/data    26969964 3050864  23919100  12% /data
/dev/block/cache     507848    2860    504988   1% /cache
/dev/block/tee         5115      45      5070   1% /tee
/dev/fuse          26969964 3050864  23919100  12% /mnt/runtime/default/emulated
/dev/fuse          26969964 3050864  23919100  12% /mnt/runtime/read/emulated
/dev/fuse          26969964 3050864  23919100  12% /mnt/runtime/write/emulated

recovery sd

https://www.cnx-software.com/2016/11/19/how-to-create-a-bootable-recovery-sd-card-for-amlogic-tv-boxes/

amlogic info

http://www.linux-meson.com/doku.php

armbian

https://forum.armbian.com/topic/12162-single-armbian-image-for-rk-aml-aw-aarch64-armv8/

dpavlin@nuc:~/Downloads$ xzcat Armbian_20.09_Arm-64_bullseye_current_5.8.5.img.xz | dd iflag=fullblock oflag=direct conv=fsync status=progress bs=1M of=/dev/sdb
dpavlin@nuc:~/Downloads$ sudo mount /dev/sdb1 /mnt/sdb1/
dpavlin@nuc:~/Downloads$ cd /mnt/sdb1/

root@nuc:/mnt/sdb1# cp u-boot-s905x-s912 u-boot.ext

root@nuc:/mnt/sdb1# vi extlinux/extlinux.conf

root@nuc:/mnt/sdb1# grep -v '^#' extlinux/extlinux.conf
LABEL Armbian
LINUX /zImage
INITRD /uInitrd

FDT /dtb/amlogic/meson-gxm-q201.dtb
APPEND root=LABEL=ROOTFS rootflags=data=writeback rw console=ttyAML0,115200n8 console=tty0 no_console_suspend consoleblank=0 fsck.fix=yes fsck.repair=yes net.ifnames=0

Note that this board uses meson-gxm-q201.dtb which is internal rmii to make ethernet work!

issue reboot update from android shell to boot from sdcard

ath10k wifi sdio firmware

After booting, you will get error message about missing firmware:

[    7.861827] ath10k_sdio mmc2:0001:1: Failed to find firmware-N.bin (N between 2 and 6) from ath10k/QCA9377/hw1.0: -2
[    7.861838] ath10k_sdio mmc2:0001:1: could not fetch firmware files (-2)

Package firmware-atheros is installed, so it's a bit puzzeling what file is missing, however, if we go to

https://github.com/kvalo/ath10k-firmware.git

we can find sdio firmware at https://github.com/kvalo/ath10k-firmware/tree/master/QCA9377/hw1.0/untested

dpavlin@m8s:~/ath10k-firmware$ git remote -v
origin	https://github.com/kvalo/ath10k-firmware.git (fetch)
origin	https://github.com/kvalo/ath10k-firmware.git (push)

dpavlin@m8s:~/ath10k-firmware$ sudo cp QCA9377/hw1.0/untested/firmware-sdio-5.bin_WLAN.TF.1.1.1-00061-QCATFSWPZ-1 /lib/firmware/ath10k/QCA9377/hw1.0/firmware-sdio-5.bin

After running nmtui and configuring wifi it's available but dies after a while under load.

kernel source

https://github.com/150balbes/Amlogic_s905-kernel

currently, I'm using

dpavlin@m8s:~/linux$ git remote -v
origin	https://github.com/xdarklight/linux (fetch)
origin	https://github.com/xdarklight/linux (push)
dpavlin@m8s:~/linux$ git branch
  master
  meson-mx-integration-5.11-20210124
  meson-mx-integration-5.13-20210503
* meson-mx-integration-5.13-20210523
dpavlin@m8s:~/linux$ cat mason-build.sh
# https://github.com/SLAzurin/armbian-aml-s8xx-kernel-build-steps

# https://github.com/xdarklight/linux

make -j 8 Image dtbs modules && sudo make modules_install dtbs_install install

Installing armbian kernel package doesn't work because /boot partition is vfat and not ext2/4

u-boot source

https://github.com/150balbes/Amlogic_S905-u-boot

balbes150 updates

installing linux image and headers does return error, but works

https://users.armbian.com/balbes150/

gpiod

sudo apt install gpiod

button - gpio 2

root@arm-64:~# gpioget gpiochip0 2 # not pressed
1
root@arm-64:~# gpioget gpiochip0 2 # pressed
0

led - gpio 9

root@arm-64:~# gpioset gpiochip0 9=0 # red

root@arm-64:~# gpioset gpiochip0 9=1 # blue (default)

u-boot

old https://github.com/endlessm/u-boot-meson

I wanted serial console which seems to be missing from armbian build above

wiki seems to suggest repository

https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic

but we are going to use upstream u-boot

dpavlin@m8s:~/u-boot-amlogic$ git remote -v
github	https://github.com/u-boot/u-boot (fetch)

dpavlin@m8s:~/u-boot-amlogic$ libretech-cc_defconfig
dpavlin@m8s:~/u-boot-amlogic$ make -j 8
dpavlin@m8s:~/u-boot-amlogic$ cp u-boot.bin /boot/

abort u-boot with key press and boot new one with

fatload mmc 1 0x1000000 u-boot.bin
go 0x1000000

2020-10 status for amlogic

U-Boot: Porting and Maintaining a Bootloader for a Multimedia SoC Family - Neil Armstrong, BayLibre SAS

https://youtu.be/u0-swEMDFp0

Lamobo/BananaPi R1

http://linux-sunxi.org/Lamobo_R1

upgrade to unsupported armbian

This board was last supported on jessie, but it's fully supported in upstream so I did upgrade to latest Armbian as of 2021-05-29.

u-boot

sdcard already had u-boot installed, so I didn't have to touch this in first step. To update
u-boot do following:

root@r1:/home/dpavlin# apt install u-boot-sunxi

root@r1:/home/dpavlin# dd conv=fsync,notrunc if=/usr/lib/u-boot/Lamobo_R1/u-boot-sunxi-with-spl.bin of=/dev/mmcblk0 bs=1024 seek=8
449+1 records in
449+1 records out
460103 bytes (460 kB, 449 KiB) copied, 0.0449233 s, 10.2 MB/s

distribution

First, I did distribution update to stretch and buster and than added

root@r1:/home/dpavlin# cat /etc/apt/sources.list.d/armbian.list
deb http://beta.armbian.com buster main

kernel

and installed latest sunxi kernel image

apt install linux-image-edge-sunxi

After reboot I was greeted with new kernel

root@r1:/home/dpavlin# uname -a
Linux r1 5.12.7-sunxi #trunk.33 SMP Fri May 28 07:03:36 UTC 2021 armv7l GNU/Linux

configure switch

https://www.kernel.org/doc/html/latest/networking/dsa/b53.html

root@r1:/home/dpavlin# cat /etc/network/interfaces.d/br0
auto br0
iface br0 inet dhcp
#iface br0 inet manual
#	address 192.168.1.1
#	netmask 255.255.255.0
	bridge_ports eth0 wan lan1 lan2 lan3 lan4
	post-up for i in `seq 0 4`; do ip link set up dev lan${i}; done ; ip link set up dev wlan
	bridge_stp off
        bridge_waitport 0
	bridge_fd 0

Ports are (left-to-right, looking from back of board starting at edge towards hdmi connector):

br0: port 3(lan1) entered disabled state
br0: port 4(lan2) entered blocking state
br0: port 4(lan2) entered forwarding state
br0: port 4(lan2) entered disabled state
br0: port 5(lan3) entered blocking state
br0: port 5(lan3) entered forwarding state
br0: port 5(lan3) entered disabled state
br0: port 6(lan4) entered blocking state
br0: port 6(lan4) entered forwarding state
br0: port 6(lan4) entered disabled state
br0: port 2(wan) entered blocking state
br0: port 2(wan) entered forwarding state

switch connects all ports on boot

https://github.com/armbian/build/issues/511#issuecomment-258647387

DSA config on armbian for r1

• https://github.com/armbian/build/issues/511

uart

Connect your UART adapter here:

UART0-RX: J13-P01
UART0-TX: J13-P02
GND: J12-P08

                          GND TX RX
             J12   o  o  o  o  o  o
{SD slot}          o  o  o  o

switch

https://www.mail-archive.com/netdev@vger.kernel.org/msg150526.html

port mirroring

https://www.mail-archive.com/netdev@vger.kernel.org/msg150526.html

# ingress
      tc qdisc  add dev eth1 handle ffff: ingress
      tc filter add dev eth1 parent ffff:           \
               matchall skip_sw                      \
               action mirred egress mirror           \
               dev eth2
# egress
      tc qdisc add dev eth1 handle 1: root prio
      tc filter add dev eth1 parent 1:               \
               matchall skip_sw                       \
               action mirred egress mirror            \
               dev eth2

usb otg

http://git.rot13.org/?p=usb-otg;a=summary

usbproxy

make sure that there are no other usb modules loaded (libcomposite or g_*)

mitm usb otg machine

dpavlin@r1:~/USBProxy$ git remote -v
origin  https://github.com/dominicgs/USBProxy (fetch)
origin  https://github.com/dominicgs/USBProxy (push)

dpavlin@r1:~/USBProxy/src/build$ sudo usb-mitm -l -v 058f -p 6387 -P PacketFilter_MassStorage
Loading plugins from /usr/local/lib/USBProxy/
vendorId=058f
productId=6387
cleaning up /tmp
removing 1
Made directory /tmp/gadget-SOOBVj for gadget
UnblockPassword=
Printing Config data
        Strings: 4
                DeviceProxy: DeviceProxy_LibUSB
                HostProxy: HostProxy_GadgetFS
                productId: 6387
                vendorId: 058f
        Vectors: 1
                Plugins:
                        PacketFilter_StreamLog
                        PacketFilter_MassStorage
Pointer: 1
                PacketFilter_StreamLog::file: 0xb6d779f0
Device: 12 01 00 02 00 00 00 40 8f 05 87 63 00 01 01 02 03 01
  Manufacturer: JetFlash
  Product:      Mass Storage Device
  Serial:       GUYOBHDU
        *Config(1): 09 02 20 00 01 01 00 80 32
                Interface(0):
                        *Alt(0): 09 04 00 00 02 08 06 50 00
                                EP(01): 07 05 01 02 00 02 00
                                EP(82): 07 05 82 02 00 02 00
HS Qualifier: 0a 06 00 02 00 00 00 40 01 00
         Config(1): 09 07 20 00 01 01 00 80 32
                Interface(0):
                        *Alt(0): 09 04 00 00 02 08 06 50 00
                                EP(01): 07 05 01 02 40 00 00
                                EP(82): 07 05 82 02 40 00 00
searching in [/tmp/gadget-SOOBVj]
Starting injector thread (14796) for [Injector].
Injector In FD[1/1]: 3
Starting setup writer thread (14799) for EP00.
Starting setup reader thread (14797) for EP00.
[80 06 00 03 00 00 ff 00]
[80 06 00 03 00 00 04 00]: 04 03 09 04
[80 06 02 03 09 04 ff 00]
[80 06 02 03 09 04 28 00]:
        28 03 4d 00 61 00 73 00 73 00 20 00 53 00 74 00 6f 00 72 00 61 00 67 00 65 00 20 00 44 00 65 00
        76 00 69 00 63 00 65 00
[80 06 01 03 09 04 ff 00]
[80 06 01 03 09 04 12 00]: 12 03 4a 00 65 00 74 00 46 00 6c 00 61 00 73 00 68 00
[80 06 03 03 09 04 ff 00]
[80 06 03 03 09 04 12 00]: 12 03 47 00 55 00 59 00 4f 00 42 00 48 00 44 00 55 00
[00 09 01 00 00 00 00 00]
Opened EP01
Opened EP82
Starting writer thread (14802) for EP01.
Starting reader thread (14803) for EP82.
Starting writer thread (14804) for EP82.
Starting reader thread (14801) for EP01.
[a1 fe 00 00 00 00 01 00]
[a1 fe 00 00 00 00 00 00]
01[31]: 55 53 42 43 01 00 00 00 24 00 00 00 80 00 06 12 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00
CBW: (12), tag: 01 00 00 00

[80 06 03 03 09 04 ff 00]
[80 06 03 03 09 04 12 00]: 12 03 47 00 55 00 59 00 4f 00 42 00 48 00 44 00 55 00
[00 09 01 00 00 00 00 00]

original target device

dpavlin@nuc:~$ journalctl -t kernel -f
Sep 01 11:10:04 nuc kernel: usb 2-4.4.2: new high-speed USB device number 45 using xhci_hcd
Sep 01 11:10:04 nuc kernel: usb 2-4.4.2: New USB device found, idVendor=058f, idProduct=6387
Sep 01 11:10:04 nuc kernel: usb 2-4.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Sep 01 11:10:04 nuc kernel: usb 2-4.4.2: Product: Mass Storage Device
Sep 01 11:10:04 nuc kernel: usb 2-4.4.2: Manufacturer: JetFlash
Sep 01 11:10:04 nuc kernel: usb 2-4.4.2: SerialNumber: GUYOBHDU
Sep 01 11:10:04 nuc kernel: usb-storage 2-4.4.2:1.0: USB Mass Storage device detected
Sep 01 11:10:04 nuc kernel: scsi host5: usb-storage 2-4.4.2:1.0

# BUT!

dpavlin@nuc:~$ sudo fdisk -l /dev/sdb
fdisk: cannot open /dev/sdb: No medium found

WiringPi

dpavlin@r1:~/BPI-WiringPi2$ git remote -v
lanefu  https://github.com/lanefu/WiringOtherPi (fetch)
lanefu  https://github.com/lanefu/WiringOtherPi (push)
origin  https://github.com/BPI-SINOVOIP/BPI-WiringPi2 (fetch)
origin  https://github.com/BPI-SINOVOIP/BPI-WiringPi2 (push)

dpavlin@r1:~/BPI-WiringPi2$ gpio readall
 +-----+-----+----------+------+---+-Orange Pi+---+---+------+---------+-----+--+
 | BCM | wPi |   Name   | Mode | V | Physical | V | Mode | Name     | wPi | BCM |
 +-----+-----+----------+------+---+----++----+---+------+----------+-----+-----+
 |     |     |     3.3v |      |   |  1 || 2  |   |      | 5v       |     |     |
 |  12 |   8 |    SDA.0 |   IN | 0 |  3 || 4  |   |      | 5V       |     |     |
 |  11 |   9 |    SCL.0 |   IN | 0 |  5 || 6  |   |      | 0v       |     |     |
 |   6 |   7 |   GPIO.7 |   IN | 0 |  7 || 8  | 0 | IN   | TxD3     | 15  | 13  |
 |     |     |       0v |      |   |  9 || 10 | 0 | IN   | RxD3     | 16  | 14  |
 |   1 |   0 |     RxD2 |   IN | 0 | 11 || 12 | 0 | IN   | GPIO.1   | 1   | 110 |
 |   0 |   2 |     TxD2 |   IN | 0 | 13 || 14 |   |      | 0v       |     |     |
 |   3 |   3 |     CTS2 |   IN | 0 | 15 || 16 | 0 | IN   | GPIO.4   | 4   | 68  |
 |     |     |     3.3v |      |   | 17 || 18 | 0 | IN   | GPIO.5   | 5   | 71  |
 |  64 |  12 |     MOSI |   IN | 0 | 19 || 20 |   |      | 0v       |     |     |
 |  65 |  13 |     MISO |   IN | 0 | 21 || 22 | 0 | IN   | RTS2     | 6   | 2   |
 |  66 |  14 |     SCLK |   IN | 0 | 23 || 24 | 0 | IN   | CE0      | 10  | 67  |
 |     |     |       0v |      |   | 25 || 26 | 0 | IN   | GPIO.11  | 11  | 21  |
 |  19 |  30 |    SDA.1 |   IN | 0 | 27 || 28 | 0 | IN   | SCL.1    | 31  | 18  |
 |   7 |  21 |  GPIO.21 |   IN | 0 | 29 || 30 |   |      | 0v       |     |     |
 |   8 |  22 |  GPIO.22 |   IN | 0 | 31 || 32 | 0 | IN   | RTS1     | 26  | 200 |
 |   9 |  23 |  GPIO.23 |   IN | 0 | 33 || 34 |   |      | 0v       |     |     |
 |  10 |  24 |  GPIO.24 |   IN | 0 | 35 || 36 | 0 | IN   | CTS1     | 27  | 201 |
 |  20 |  25 |  GPIO.25 |   IN | 0 | 37 || 38 | 0 | IN   | TxD1     | 28  | 198 |
 |     |     |       0v |      |   | 39 || 40 | 0 | IN   | RxD1     | 29  | 199 |
 +-----+-----+----------+------+---+----++----+---+------+----------+-----+-----+
 | BCM | wPi |   Name   | Mode | V | Physical | V | Mode | Name     | wPi | BCM |
 +-----+-----+----------+------+---+-Orange Pi+---+------+----------+-----+-----+

TMP75

root@r1:/etc/telegraf# i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- 49 -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --                         

userland

• https://github.com/ManuelSchneid3r/RaspberryPi/blob/master/sensors/src/tmp.c

dpavlin@r1:~$ cc tmp.c -o tmp -lm
dpavlin@r1:~$ sudo ./tmp /dev/i2c-1 0x49
21.5

kernel hwmomn lm75 driver

root@r1:~# echo lm75 0x49 > /sys/bus/i2c/devices/i2c-1/new_device 

root@r1:~# dmesg | tail -2
[68352.599623] lm75 1-0049: hwmon1: sensor 'lm75'
[68352.599719] i2c i2c-1: new_device: Instantiated device lm75 at 0x49

root@r1:/sys/bus/i2c/devices/i2c-1# sensors
sun4i_ts-isa-0000
Adapter: ISA adapter
SoC temperature:  +44.4°C  

lm75-i2c-1-49
Adapter: mv64xxx_i2c adapter
temp1:        +22.0°C  (high = +80.0°C, hyst = +75.0°C)

network performance

kernel 3.4

root@r1:~# uname -a
Linux r1 3.4.113-sun7i #23 SMP PREEMPT Wed Jun 14 23:57:45 CEST 2017 armv7l GNU/Linux

root@r1:~# iperf3 --reverse --client nuc
Connecting to host nuc, port 5201
Reverse mode, remote host nuc is sending
[  4] local 192.168.3.238 port 58203 connected to 192.168.3.40 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   107 MBytes   897 Mbits/sec                  
[  4]   1.00-2.00   sec   110 MBytes   923 Mbits/sec                  
[  4]   2.00-3.00   sec   111 MBytes   935 Mbits/sec                  
[  4]   3.00-4.00   sec   107 MBytes   894 Mbits/sec                  
[  4]   4.00-5.00   sec   111 MBytes   927 Mbits/sec                  
[  4]   5.00-6.00   sec   110 MBytes   922 Mbits/sec                  
[  4]   6.00-7.00   sec   111 MBytes   928 Mbits/sec                  
[  4]   7.00-8.00   sec   111 MBytes   935 Mbits/sec                  
[  4]   8.00-9.00   sec   111 MBytes   928 Mbits/sec                  
[  4]   9.00-10.00  sec   111 MBytes   931 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.08 GBytes   924 Mbits/sec  147             sender
[  4]   0.00-10.00  sec  1.07 GBytes   922 Mbits/sec                  receiver

iperf Done.

root@r1:~# iperf3 --client nuc
Connecting to host nuc, port 5201
[  4] local 192.168.3.238 port 58205 connected to 192.168.3.40 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  51.3 MBytes   428 Mbits/sec    0    239 KBytes       
[  4]   1.00-2.01   sec  52.5 MBytes   436 Mbits/sec    0    240 KBytes       
[  4]   2.01-3.02   sec  52.5 MBytes   436 Mbits/sec    0    245 KBytes       
[  4]   3.02-4.01   sec  50.0 MBytes   424 Mbits/sec    0    246 KBytes       
[  4]   4.01-5.02   sec  51.2 MBytes   429 Mbits/sec    0    247 KBytes       
[  4]   5.02-6.02   sec  52.5 MBytes   439 Mbits/sec    0    250 KBytes       
[  4]   6.02-7.03   sec  51.2 MBytes   427 Mbits/sec    0    253 KBytes       
[  4]   7.03-8.00   sec  48.8 MBytes   418 Mbits/sec    0    256 KBytes       
[  4]   8.00-9.02   sec  52.5 MBytes   432 Mbits/sec    0    256 KBytes       
[  4]   9.02-10.01  sec  51.2 MBytes   435 Mbits/sec    0    256 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.01  sec   514 MBytes   431 Mbits/sec    0             sender
[  4]   0.00-10.01  sec   514 MBytes   431 Mbits/sec                  receiver

kernel 4.13

root@r1:~# uname -a
Linux r1 4.13.10-sunxi #57 SMP Mon Oct 30 00:08:27 CET 2017 armv7l GNU/Linux

root@r1:~# iperf3 --client nuc
Connecting to host nuc, port 5201
[  4] local 192.168.3.238 port 59520 connected to 192.168.3.40 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  67.9 MBytes   567 Mbits/sec    0    765 KBytes       
[  4]   1.00-2.01   sec  82.1 MBytes   687 Mbits/sec    0    840 KBytes       
[  4]   2.01-3.01   sec  65.7 MBytes   547 Mbits/sec    0   1.13 MBytes       
[  4]   3.01-4.02   sec  80.0 MBytes   669 Mbits/sec    0   1.13 MBytes       
[  4]   4.02-5.00   sec  76.2 MBytes   648 Mbits/sec    0   1.24 MBytes       
[  4]   5.00-6.00   sec  81.2 MBytes   681 Mbits/sec    0   1.24 MBytes       
[  4]   6.00-7.06   sec  82.5 MBytes   656 Mbits/sec    0   1.33 MBytes       
[  4]   7.06-8.00   sec  80.0 MBytes   712 Mbits/sec    0   1.33 MBytes       
[  4]   8.00-9.00   sec  78.8 MBytes   659 Mbits/sec    0   1.61 MBytes       
[  4]   9.00-10.00  sec  83.8 MBytes   702 Mbits/sec    0   2.08 MBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   778 MBytes   653 Mbits/sec    0             sender
[  4]   0.00-10.00  sec   775 MBytes   650 Mbits/sec                  receiver

iperf Done.

root@r1:~# iperf3 --reverse --client nuc
Connecting to host nuc, port 5201
Reverse mode, remote host nuc is sending
[  4] local 192.168.3.238 port 59524 connected to 192.168.3.40 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  98.0 MBytes   822 Mbits/sec                  
[  4]   1.00-2.00   sec   112 MBytes   933 Mbits/sec                  
[  4]   2.00-3.00   sec   107 MBytes   904 Mbits/sec                  
[  4]   3.00-4.00   sec   107 MBytes   898 Mbits/sec                  
[  4]   4.00-5.00   sec   108 MBytes   904 Mbits/sec                  
[  4]   5.00-6.00   sec   108 MBytes   903 Mbits/sec                  
[  4]   6.00-7.00   sec   108 MBytes   904 Mbits/sec                  
[  4]   7.00-8.00   sec   108 MBytes   904 Mbits/sec                  
[  4]   8.00-9.00   sec   108 MBytes   904 Mbits/sec                  
[  4]   9.00-10.00  sec   107 MBytes   899 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.05 GBytes   900 Mbits/sec   69             sender
[  4]   0.00-10.00  sec  1.05 GBytes   898 Mbits/sec                  receiver

kernel 5.12.7

dpavlin@r1:~$ uname -a
Linux r1 5.12.7-sunxi #trunk.33 SMP Fri May 28 07:03:36 UTC 2021 armv7l GNU/Linux

dpavlin@r1:~$ iperf3 -c nuc
Connecting to host nuc, port 5201
[  5] local 192.168.3.238 port 50136 connected to 192.168.3.40 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.02   sec  41.9 MBytes   346 Mbits/sec    0    239 KBytes
[  5]   1.02-2.02   sec  53.8 MBytes   448 Mbits/sec    0    266 KBytes
[  5]   2.02-3.00   sec  42.5 MBytes   363 Mbits/sec    0    266 KBytes
[  5]   3.00-4.02   sec  53.8 MBytes   445 Mbits/sec    0    277 KBytes
[  5]   4.02-5.01   sec  53.8 MBytes   456 Mbits/sec    0    325 KBytes
[  5]   5.01-6.02   sec  48.1 MBytes   400 Mbits/sec    0    386 KBytes
[  5]   6.02-7.03   sec  48.8 MBytes   405 Mbits/sec    0    386 KBytes
[  5]   7.03-8.00   sec  46.2 MBytes   397 Mbits/sec    0    386 KBytes
[  5]   8.00-9.02   sec  53.8 MBytes   443 Mbits/sec    0    393 KBytes
[  5]   9.02-10.00  sec  51.2 MBytes   438 Mbits/sec    0    393 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   494 MBytes   414 Mbits/sec    0             sender
[  5]   0.00-10.01  sec   494 MBytes   414 Mbits/sec                  receiver

iperf Done.
dpavlin@r1:~$ iperf3 -R -c nuc
Connecting to host nuc, port 5201
Reverse mode, remote host nuc is sending
[  5] local 192.168.3.238 port 50140 connected to 192.168.3.40 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.01   sec  66.9 MBytes   559 Mbits/sec
[  5]   1.01-2.00   sec  69.8 MBytes   588 Mbits/sec
[  5]   2.00-3.00   sec  66.8 MBytes   560 Mbits/sec
[  5]   3.00-4.00   sec  67.6 MBytes   567 Mbits/sec
[  5]   4.00-5.00   sec  67.6 MBytes   568 Mbits/sec
[  5]   5.00-6.00   sec  65.3 MBytes   548 Mbits/sec
[  5]   6.00-7.00   sec  66.5 MBytes   558 Mbits/sec
[  5]   7.00-8.00   sec  65.4 MBytes   549 Mbits/sec
[  5]   8.00-9.00   sec  66.7 MBytes   560 Mbits/sec
[  5]   9.00-10.00  sec  65.2 MBytes   547 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec   672 MBytes   563 Mbits/sec   57             sender
[  5]   0.00-10.00  sec   668 MBytes   560 Mbits/sec                  receiver

iperf Done.

http://www.orangepi.org/orangepiplus2/

https://www.armbian.com/orange-pi-plus-2/

SoC H3 @ 1.2GHz[1]
DRAM 2GiB DDR3 @ ?MHz (H5TC4G83AFR-PBA)
NAND 16GB EMMC Flash (in 2016 KLMAG2GEND-B031 but now slower KLMAG2WEPD-B031)
Power DC 5V @ 2A (4.0mm/1.7mm barrel plug - centre positive)
Features
Video HDMI (HDCP, CEC), CVBS
Audio 3.5 mm Jack, HDMI, Microphone
Network 10/100/1000Mbps Ethernet (Realtek RTL8211E), WiFi 802.11 b/g/n (Realtek RTL8189ETV)
Storage �SD (max 64GB), SATA 2.0 (via GL830 USB-to-SATA bridge, +5V power on JST XH 2.5mm connector)
USB 4 USB 2.0 Host (via FE1.1s hub), 1 USB 2.0 OTG

bme280 i2c temperature/humidity/pressure

/home/dpavlin/linux-gpio-pinout/overlay-load.sh /boot/dtb-`uname -r`/overlay/*h3*i2c0*

root@opip:/home/dpavlin/linux-gpio-pinout# i2cdetect -y 2
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- 76 --

Check i2c address in datasheet

Connecting SDO to GND results in slave
address 1110110 (0x76); connection it to V DDIO results in slave address 1110111 (0x77)

root@opip:/home/dpavlin/linux-gpio-pinout# zgrep BMP280 /proc/config.gz
CONFIG_BMP280=m
CONFIG_BMP280_I2C=m
CONFIG_BMP280_SPI=m

root@opip:/home/dpavlin/linux-gpio-pinout# echo bmp280 0x76 > /sys/bus/i2c/devices/i2c-2/new_device
root@opip:/home/dpavlin/linux-gpio-pinout# [Sat Jan  2 11:43:58 2021] i2c i2c-2: new_device: Instantiated device bmp280 at 0x76
[Sat Jan  2 11:43:58 2021] bmp280 2-0076: supply vddd not found, using dummy regulator
[Sat Jan  2 11:43:58 2021] bmp280 2-0076: supply vdda not found, using dummy regulator
[Sat Jan  2 11:43:58 2021] bmp280 2-0076: bad chip id: expected 58 got 60
[Sat Jan  2 11:43:58 2021] bmp280: probe of 2-0076 failed with error -22

So it's not BMP280, but BME280.

Using https://www.raspberrypi-spy.co.uk/2016/07/using-bme280-i2c-temperature-pressure-sensor-in-python/
I downloaded and modified for python3 bme280.py

root@opip:/home/dpavlin# ./bme280.py
Chip ID : 96
Version : 0
Temperature : 24.65 C
Pressure : 998.4304559219445 hPa
Humidity : 41.458674890198445 %e

So let's try with correct sensor name

root@opip:/sys/bus/i2c/devices/i2c-2# echo bme280 0x76 > /sys/bus/i2c/devices/i2c-2/new_device
[Sat Jan  2 12:32:01 2021] bmp280 2-0076: supply vddd not found, using dummy regulator
[Sat Jan  2 12:32:01 2021] bmp280 2-0076: supply vdda not found, using dummy regulator
[Sat Jan  2 12:32:01 2021] i2c i2c-2: new_device: Instantiated device bme280 at 0x76

root@opip:~# apt install libiio-utils

root@opip:~# iio_info
Library version: 0.16 (git tag: v0.16)
Compiled with backends: local xml ip usb serial
IIO context created with local backend.
Backend version: 0.16 (git tag: v0.16)
Backend description string: Linux opip 5.10.0-rc7-sunxi #20.11.3 SMP Fri Dec 11 21:18:30 CET 2020 armv7l
IIO context has 1 attributes:
	local,kernel: 5.10.0-rc7-sunxi
IIO context has 1 devices:
	iio:device0: bme280
		3 channels found:
			humidityrelative:  (input)
			2 channel-specific attributes found:
				attr  0: input value: 40775
				attr  1: oversampling_ratio value: 16
			pressure:  (input)
			2 channel-specific attributes found:
				attr  0: input value: 99.809761718
				attr  1: oversampling_ratio value: 16
			temp:  (input)
			2 channel-specific attributes found:
				attr  0: input value: 25350
				attr  1: oversampling_ratio value: 2

collect using telegraf

root@opip:/etc/telegraf/telegraf.d# ../telegraf --config iio.conf --test
2021-01-02T12:39:39Z I! Starting Telegraf
> iio,host=opip,name=bme280 humidityrelative=39.934,pressure=99.801214843,temperature=25.66 1609591179000000000

board and pinouts info

• http://synfare.com/599N105E/hwdocs/pine64/index.html

armbian

After upgrade to armbian-next , it doesn't boot. Stop u-boot with space and boot manually:

# try to boot only from mmc
=> setenv bootcmd run mmc_boot
=> saveenv
Saving Environment to MMC...
Writing to MMC(0)... done

=> run mmc_boot
# this will fail, but will set some enviroment variables needed

=> setenv devtype mmc
=> setenv prefix /boot/
=> load ${devtype} 0 ${ramdisk_addr_r} ${prefix}uInitrd
4293052 bytes read in 676 ms (6.1 MiB/s)

=> load ${devtype} 0 ${kernel_addr_r} ${prefix}Image 
12957704 bytes read in 1386 ms (8.9 MiB/s)

=> load ${devtype} 0 ${fdt_addr_r} ${prefix}dtb/${fdtfile}
14505 bytes read in 397 ms (35.2 KiB/s)

=> booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}

# fix load addresses in /boot/boot.cmd
=> setenv fdt_addr ${fdt_addr_r}
=> setenv kernel_addr ${kernel_addr_r}
=> setenv ramdisk_addr ${ramdisk_addr_r}    
=> saveenv

fixed: boot.cmd

Links

http://wiki.pine64.org/index.php/Main_Page

http://linux-sunxi.org/Pine64

https://github.com/apritzel/pine64

Debian rootfs: https://github.com/umiddelb/z2d/tree/master/pine64

u-boot

https://github.com/longsleep/build-pine64-image

http://forum.pine64.org/showthread.php?tid=99

https://www.stdin.xyz/downloads/people/longsleep/pine64-images/

kernel

http://forum.pine64.org/showthread.php?tid=293

serial ports

• https://github.com/longsleep/build-pine64-image/pull/11

• update image: http://forum.pine64.org/showthread.php?tid=99

• from http://linux-sunxi.org/Pine64#Serial_port_.2F_UART

meanIT tablet Q70

7" IPS Quad Core

recovery: extdroid4.4.2_r2-a33-v2.0

adb shell

dpavlin@siobhan:~$ adb shell
root@astar-ococci:/ #

root@astar-ococci:/ # cat /proc/cmdline                                        
console=ttyS0,115200 root=/dev/nandd init=/init loglevel=4 specialstr= partitions=bootloader@nanda:env@nandb:boot@nandc:system@nandd:data@nande:misc@nandf:recovery@nandg:cache@nandh:metadata@nandi:private@nandj:UDISK@nandk boot_type=0 config_size=39716

root@astar-ococci:/ # cat /proc/cpuinfo                                        
Processor       : ARMv7 Processor rev 5 (v7l)
processor       : 0
BogoMIPS        : 5714.28

processor       : 1
BogoMIPS        : 4800.00

processor       : 3
BogoMIPS        : 4800.00

Features        : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt 
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xc07
CPU revision    : 5

Hardware        : sun8i
Revision        : 0000
Serial          : 1a884915

board

AL-AX3-751B-V1.0
2015.03.26

http://linux-sunxi.org/Aoson_M751s

https://github.com/Icenowy/linux-kernel-lichee-a33/tree/aoson-m751s

USB FEL

Vol+ to enter FEL mode

Bus 003 Device 004: ID 1f3a:efe8 Onda (unverified) V972 tablet in flashing mode

root@x230:~# sunxi-fel ver
AWUSBFEX soc=00001667(A33) 00000001 ver=0001 44 08 scratchpad=00007e00 00000000 00000000

# read SID
root@x230:~# sunxi-fel readl 0x01c23800
0x0461872a

root@x230:~# sunxi-fel sid
0461872a:033c50c3:1a884915:00000000

device info

• http://linux-sunxi.org/Retrieving_device_information

dpavlin@x230:~/a33$ sudo sunxi-fel read 0x42400000 0x82d0 boot1.header

# blocks and version doesn't work any more

root@x230:~# sunxi-fel -v read 0x43000000 0x20000 script.bin 

# also doesn't transfer anything and hangs

extract data from device

dpavlin@klin:/klin/armbian/sunxi-tools$ make CROSS_COMPILE=arm-linux-gnueabihf- sunxi-meminfo
arm-linux-gnueabihf-gcc -std=c99 -Wall -Wextra -Wno-unused-result -D_POSIX_C_SOURCE=200112L -D_BSD_SOURCE -D_DEFAULT_SOURCE -Iinclude/ -static  -o sunxi-meminfo meminfo.c
dpavlin@klin:/klin/armbian/sunxi-tools$ make CROSS_COMPILE=arm-linux-gnueabihf- sunxi-script_extractor
arm-linux-gnueabihf-gcc -std=c99 -Wall -Wextra -Wno-unused-result -D_POSIX_C_SOURCE=200112L -D_BSD_SOURCE -D_DEFAULT_SOURCE -Iinclude/ -static  -o sunxi-script_extractor script_extractor.c

# put files in /cache/ instead of /sdcard/ since /sdcard/ doesn't have executable permission
dpavlin@x230:/mnt/klin/klin/armbian/sunxi-tools$ adb push sunxi-script_extractor /cache/
[100%] /cache/sunxi-script_extractor
dpavlin@x230:/mnt/klin/klin/armbian/sunxi-tools$ adb push sunxi-meminfo /cache/
[100%] /cache/sunxi-meminfo

root@astar-ococci:/cache # ./sunxi-meminfo                                     
Error: unknown or unhandled Soc: 0x1667
255|
# urgh!

svroot@astar-ococci:/cache # ./sunxi-script_extractor > a33.bin                  
root@astar-ococci:/cache # ls -al a33.bin                                      
-rw-rw-rw- root     root       131072 2017-10-18 17:57 a33.bin

u-boot

dpavlin@klin:/klin/u-boot$ git remote -v
sunxi   git://git.denx.de/u-boot-sunxi.git (fetch)
sunxi   git://git.denx.de/u-boot-sunxi.git (push)

dpavlin@klin:/klin/u-boot$ git checkout -b sunxi/next sunxi/next
Branch 'sunxi/next' set up to track remote branch 'next' from 'sunxi'.
Switched to a new branch 'sunxi/next'

dpavlin@klin:/klin/u-boot$ make CROSS_COMPILE=arm-linux-gnueabihf- q8_a33_tablet_1024x600_defconfig

dpavlin@klin:/klin/u-boot$ make CROSS_COMPILE=arm-linux-gnueabihf- -j4

• http://linux-sunxi.org/FEL/USBBoot

malware pre-installed

• com.adups.fota

https://github.com/imx6-dongle
https://github.com/imx6-dongle/wiki/wiki
https://github.com/imx6-dongle/wiki/wiki/GK802-hardware

• kernel 4.4 https://github.com/dpavlin/linux-udoo
• u-boot https://github.com/dpavlin/uboot-imx6dongle

Bus 001 Device 045: ID 15a2:0054 Freescale Semiconductor, Inc. i.MX6Q SystemOnChip in RecoveryMode

chroot

root@nuc:/tmp/n3# cp `which qemu-arm-static` usr/bin/
root@nuc:/tmp/n3# chroot .
root@nuc:/# uname -a
Linux nuc 4.4.0-1-amd64 #1 SMP Debian 4.4.4-1 (2016-03-07) armv7l GNU/Linux
root@nuc:/# file /bin/bash 
/bin/bash: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=1a8601b954c83a01d91298d0f2f8f61ca033ebdd, stripped

u-boot

compile

https://github.com/imx6-dongle/wiki/wiki/U-Boot-basics

dpavlin@nuc:/nuc/imx6/uboot-imx6dongle$


sudo apt-get install make gcc-arm-none-eabi libusb-1.0

export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-

make gk802_config

make

dut

pi@rpi2 ~/imx6/uboot-imx6dongle $ git remote -v
origin  https://github.com/imx6-dongle/uboot-imx6dongle (fetch)
origin  https://github.com/imx6-dongle/uboot-imx6dongle (push)

pi@rpi2 ~/imx6/uboot-imx6dongle $ make gk802_config
Configuring for gk802 - Board: gk802, Options: IMX_CONFIG=board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg

pi@rpi2 ~/imx6/uboot-imx6dongle $ sudo apt-get install libusb-1.0

make gk802_config tools

sudo ./tools/imxboot /nuc/imx6/uboot-imx6dongle/u-boot.imx

boot

CPU:   Freescale i.MX6Q rev1.1 at 792 MHz                                                         
CPU:   Temperature 12 C, calibration data: 0x5834de7d                                             
Reset cause: POR                                                                                  
Board: MX6Q-gk802                                                                                 
DRAM:  1 GiB                                                                                      
MMC:   FSL_SDHC: 0, FSL_SDHC: 1                                                                   
enable_hdmi: setup HDMI monitor                                                                   
Display: HDMI (1024x768)                                                                          
In:    serial                                                                                     
Out:   serial                                                                                     
Err:   serial                                                                                     

kernel

sources

• https://github.com/imx6-dongle/linux-imx
• https://github.com/patrykk/linux-udoo
• https://github.com/xobs/novena-linux

compile kernel 4.4

dpavlin@klin:/klin/imx6/linux-imx$ git remote -v
boundarydevices https://github.com/boundarydevices/linux-imx6 (fetch)
boundarydevices https://github.com/boundarydevices/linux-imx6 (push)
gk802   https://github.com/imx6-dongle/linux-imx.git (fetch)
gk802   https://github.com/imx6-dongle/linux-imx.git (push)
origin  https://github.com/xobs/novena-linux (fetch)
origin  https://github.com/xobs/novena-linux (push)
patrykk https://github.com/patrykk/linux-udoo (fetch)
patrykk https://github.com/patrykk/linux-udoo (push)

dpavlin@klin:/klin/imx6/linux-imx$ git checkout -b patrykk/4.4-5.0.11.p7.3 remotes/patrykk/4.4-5.0.11.p7.3

dpavlin@klin:/klin/imx6/linux-imx$ sudo apt-get install firmware-realtek



dpavlin@klin:/klin/imx6/linux-imx$ git checkout -b imx_3.10.17_1.0.0_ga remotes/gk802/imx_3.10.17_1.0.0_ga
Checking out files: 100% (34524/34524), done.
Branch imx_3.10.17_1.0.0_ga set up to track remote branch imx_3.10.17_1.0.0_ga from gk802.
Switched to a new branch 'imx_3.10.17_1.0.0_ga'

dpavlin@klin:/klin/imx6/linux-imx$ make gk802_defconfig

export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-

LOADADDR=0x10800000 make uImage modules -j 4


#mkdir /tmp/boot
#INSTALL_PATH=/tmp/boot make install

mkdir /tmp/modules
INSTALL_MOD_PATH=/tmp/modules make modules_install

compile 3.0.x

https://github.com/imx6-dongle/wiki/wiki

http://releases.linaro.org/components/toolchain/binaries/4.9-2016.02/arm-linux-gnueabi/gcc-linaro-4.9-2016.02-x86_64_arm-linux-gnueabi.tar.xz

pinout

older stuff

Hi-802 is clone of this one

• http://www.geekbuying.com/item/Unii-GK802-Fresscale-i-MX6-Quad-Dure-Cortex-A9-DDR3-1GB-RAM-8GB-ROM-TV-Box-Dongle----Black-312807.html
• http://forum.xda-developers.com/showthread.php?t=2044045
• FULL micro-sd images http://www.armtvtech.com/armtvtechforum/viewtopic.php?f=51&t=1113
• root http://www.armtvtech.com/armtvtechforum/viewtopic.php?f=50&t=226&start=80#p4516
• production, motherboard pictures http://www.hiapad.com/?p=1994

Serial

http://www.armtvtech.com/armtvtechforum/viewtopic.php?f=50&t=226&start=210#p6651

XBMC

external player http://www.xbmcandroid.com/2012/12/10/how-to-install-xbmc-nightly-with-external-player-on-the-mk802-stick-or-other-android-tv-devices/

Linux

http://www.junklet.net/test/gk802_boot.txt
https://wiki.linaro.org/Boards/MX6QSabreLite
http://boundarydevices.com/linaro-12-09-for-i-mx6/

http://www.geekbuying.com/item/MK808-Dual-Core-Android-4-1-Jelly-Bean-TV-BOX-Rockchip-RK3066-Cortex-A9-Mini-PC-stick-307415.html

Device info

root@android:/ # cat /proc/cmdline                                             
console=ttyFIQ0 androidboot.console=ttyFIQ0 init=/init initrd=0x62000000,0x00200000 mtdparts=rk29xxnand:0x00002000@0x00002000(misc),0x00004000@0x00004000(kernel),0x00008000@0x00008000(boot),0x00008000@0x00010000(recovery),0x000C0000@0x00018000(backup),0x00040000@0x000D8000(cache),0x00300000@0x00118000(userdata),0x00002000@0x00418000(kpanic),0x00100000@0x0041A000(system),-@0x0053A000(user) bootver=2012-08-08#1.14 firmware_ver=4.0.4

root@android:/ # cat /proc/mtd                                                 
dev:    size   erasesize  name
mtd0: 00400000 00004000 "misc"
mtd1: 00800000 00004000 "kernel"
mtd2: 01000000 00004000 "boot"
mtd3: 01000000 00004000 "recovery"
mtd4: 18000000 00004000 "backup"
mtd5: 08000000 00004000 "cache"
mtd6: 60000000 00004000 "userdata"
mtd7: 00400000 00004000 "kpanic"
mtd8: 20000000 00004000 "system"
mtd9: 131400000 00004000 "user"

Rockchip RK3066/RK30xx Processors Documentation, Source Code and Tools

http://www.cnx-software.com/2012/11/04/rockchip-rk3066-rk30xx-processor-documentation-source-code-and-tools/

Kernel

https://github.com/omegamoon/rockchip-rk30xx-mk808

Flashing

• Information about tool: http://forum.xda-developers.com/showthread.php?t=1286305
• source code: https://github.com/justgr/arnova-tools/tree/master/rkflashtool
• alternative: https://github.com/naobsd/rkutils
• rk3066 modifications: http://valentijn.sessink.nl/?p=382

Ubuntu Linux for the UG802

http://www.slatedroid.com/topic/40717-ubuntu-linux-for-the-ug802/

CyanogenMod

• http://www.armtvtech.com/armtvtechforum/viewtopic.php?f=13&t=438
• https://bitbucket.org/cm3066

Flash from Linux

./rk-tools/img_unpack flash_20121106.img flash_20121106.unpacked
./rk-tools/afptool -unpack flash_20121106 flash_20121106.files

This page documents various things about this nice A10 machine with 1Gb RAM

Serial port

Boot

• A10 boot overview - http://rhombus-tech.net/allwinner_a10/a10_boot_process/
• https://github.com/hipboi/mksunxiboot
• https://github.com/linux-sunxi/u-boot-sunxi/wiki

u-boot

https://www.miniand.com/forums/forums/development--3/topics/uboot

Kernel

(not really needed if u-boot detects memory correctly)

CONFIG_CMDLINE mem=1024M

Kernel compilation

http://linux-sunxi.org/Linux

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- sun4i_defconfig
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j16 uImage modules
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=output modules_install

Debian

• 512Mb http://romanrm.ru/en/a10/debian
• 1Gb http://jas-hacks.blogspot.co.uk/2012/10/hackberry-a10-debian-whezzy-headless.html

Android

Source

• https://github.com/oopsmonk/android_device_allwinner_mk802
• https://github.com/oopsmonk/android/blob/jellybean/default.xml

CyanogenMod 10

• https://www.miniand.com/forums/forums/development/topics/cyanogenmod-10-full-working-with-internal-storage

Building

https://github.com/linux-sunxi/sunxi-bsp

https://github.com/cnxsoft/a10-config

MicroSD breakout

• http://linux-sunxi.org/MicroSD_Breakout