Version 15 (modified by divx118, 2 years ago)

--

The GPL (and other FOSS) sources from Archos have been checked into git for convenient patching and access:

 http://gitorious.org/archos-buildroots/gen8

Notes for current Angstrom build on Gen8

* join #openaos on FreeNode? irc for help

Audio

enable speakers with toggle in alsamixer (to the right)
export SDL_AUDIO_DRIVER=alsa in case SDL apps aren't defaulting to it.

Larger onscreen keyboard

cd /usr/share/xkbd
lrwxrwxrwx 1 root root 26 Dec 21 18:06 en_US.qwerty.xkbd -> en_GB.qwerty.tabletpc.xkbd
lrwxrwxrwx 1 root root 26 Dec 21 18:06 en_GB.qwerty.xkbd -> en_GB.qwerty.tabletpc.xkbd

USB networking

/etc/network/interfaces
# Ethernet/RNDIS gadget (g_ether)
# ... or on host side, usbnet and random hwaddr
iface usb0 inet static
pre-up rmmod musb_hdrc
pre-up modprobe musb_hdrc mode_default=2
pre-up modprobe g_ether
address 192.168.0.202
netmask 255.255.255.0
network 192.168.0.0
gateway 192.168.0.200

First bring up tablet usb0 interface, then pc/laptop should appear.  Before disconnecting cable, ifdown usb0 on tablet.

Control tablet with PC keyboard and mouse

install synergy client on tablet with: opkg install synergy
install synergy server on PC/laptop
set -use_cursor to yes in /etc/matchbox/session
configure synergy on server: http://synergy2.sourceforge.net/configuration.html
start synergys on PC/laptop
ssh to archos and start synergy client with synergyc -f [your.server.ip.addr]

WLAN network

Kernel module released at http://gitorious.org/archos/archos-gpl-gen8/trees/master/hardware/ti/wlan/wl1271
Download the above mentioned sources.

cd .../hardware/ti/wlan/wl1271/platforms/os/linux

Now setup your environment by editing wl_env.bash or do it manually on the commandline in my case it was:

export CROSS_COMPILE=/usr/src/gen8/buildroot/build_arm/staging_dir/usr/bin/arm-linux- 
export ARCH=arm
export HOST_PLATFORM=zoom2
export KERNEL_DIR=/usr/src/gen8/buildroot/linux/ 

Then type make and wait a few minutes and you are done. The tiwlan_drv.ko will appear in .../hardware/ti/wlan/wl1271/platforms/os/linux
This gives you only the module. I am still looking at how the tiwlan_loader needs to be compiled.

More info can also be found  http://omappedia.com/index.php?title=Wilink_Linux&redirect=no

CPU scaling

echo ondemand /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
(throttle mhz back from 1ghz when not needed - be kind to your CPU)

Backlight control

echo 100 > /sys/devices/platform/omap_pwm_led.0/leds/lcd-backlight/brightness
(values from 0-255 are accepted)

Compiling

working cflags: -O3 -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp -ffast-math -fsingle-precision-constant

On screen kernel messages at boot up

- Remove or comment out the 'gunzip -c $BOOT_IMAGE > /dev/fb0' line in init.sh of the initramfs.
- Set the 'console' kernel command line option to 'console=tty1'. (See CONFIG_CMDLINE* kernel config)
NOTE: Kernel messages will disappear after the initramfs is done since bootsplash starts.

See also

A list of other efforts to get Linux distributions to run on Gen8.

TODOs (help wanted!)

- mount /mnt_data writeable by user
- wifi module and configuration
- fix gpe Mini Web Browser
- fix gpe applet for setting screen brightness
- get hardware-scaled framebuffer (overlay) on lcd
- switch to conservative speed governor and shorter dimming timeout when running off battery
- opkg repository for archos-gen8
- fix microphone input 
- get oprofile running with debug / symbol info
- FunAndGames: PocketSNES
- FunAndGames: pcsx-rearmed
- FunAndGames: picodrive
- FunAndGames: dosbox (dynamic recompiler) with improved mouse support

Attachments