It's kinda handy: runs Android/Linux selectively, has a HDMI interface, wired Ethernet and fullsize USB 2.0 ports. Also, it can be charged from USB, tablet style.
Quirks include no HDMI on Linux (yet), and it takes a bit of effort to turn on the wireless. Missing the gpio binary, you can get there by using the sysfs interface:
echo 6 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio6/direction
echo 1 > /sys/class/gpio/gpio6/value
Just echo 0 there to turn it off again.
Compiling a kernel needed some scraping on the web, but can be done like this:
cd linux-3.16
nice make ARCH=arm menuconfig
nice make ARCH=arm zImage
cat arch/arm/boot/zImage arch/arm/boot/dts/wm8850-w70v2.dtb > arch/arm/boot/zImage_w_dtb
mkimage -A arm -O linux -T kernel -C none -a 0x8000 -e 0x8000 -n "My Linux" -d arch/arm/boot/zImage_w_dtb ~/uzImage.bin
make ARCH=arm modules
sudo make ARCH=arm modules_install
The kernel config is online here.
It works happy with a 8GB SD card and adding a bit of swap can't hurt as the 512MB of RAM is not that much.
Thanks for the vt8500 developers!
hi, can u put a step by step for make the kernel and get ready the arch in wm8850? tanks for all.
ReplyDeleteThe commands to make the kernel are up there, they should work with a 3.16 kernel from kernel.org.
ReplyDeleteAs for Arch, I think it was a simple download, extract tarball to SD card.
The only tricky part was the bootloader, I'll post that later.
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ReplyDelete