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