Linux and cross compiler
arm-linux-gcc is on leo and teresa in /usr/local/arm/3.3.2 (this is from the ads site for latest debian build).On teresa its in your path by default. Use arm-linux-gcc to compile for the ARM.
Kernel and filesystem
current versions are on leo and teresa in /data/glacsweb/BitsyX/linux /home/Bitsy/ respectively
We are using patch level 8 of the 2.4.27 kernel. A separate debian-based ramdisk.gz is used on the ice.
Full debian on microdrive as per this link sets up something on the Bitsy so it can boot on its own without microdrive - or into full distro if its in.
LEDs are controlled in /home/bitsy/linuxkernel/linux-2.4.27/arch/arm/mach-pxa/leds-adsbitsyx.c and I think CONFIG_LEDS= in kernel config file
Building a Kernel
We're using the older kernel 2.4...
After downloading the src files and patches (and applying them)
make dep zImage
(it seems to make modules "make modules" is used - no idea when!)
Setting up flash area
this is a permanent store we usually mount as /mnt/flash to put files which don;t get wiped on reboot. on a new system you do this (ONCE ever!):
then set up a mount like this:
mount -t jffs2 /dev/mtdblock3 /mnt/flash/
online docs show that you need to make the devices for the ramdisk:
mknod /dev/ttyUSB0 c 188 0
in make menuconfig we need to choose the driver as its not there by default
to get a build environment on Ubuntu which includes curses you need to:
use system->administration->software sources to include more repositories
sudo apt-get install build-essential
sudo apt-get install libncurses5-dev