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