Adeos

How install Adeos on your board

Get Adeos

First create a working directory

$ cd armadeus
$ mkdir patches/adeos
$ cd patches/adeos

Adeos is provided as a linux kernel patch. Thus, you have to carefully select a patch matching the kernel version running on the board.
On April 2008, the status was the following :

• Adeos patches was provided for the kernels
  • 2.6.24
  • 2.6.20
  • 2.6.19
• Kernels ported for the board:
  • 2.6.24
  • 2.6.23
  • 2.6.23.18

The latest kernel matching is the 2.6.24. So you have to make sure this kernel will be run on the board.
Then download the adeos patch from this page.

For instance :

$ wget http://download.gna.org/adeos/patches/v2.6/arm/adeos-ipipe-2.6.24-arm-1.9-01.patch

Install Adeos

Go to the linux kernel directory

$ cd ../../..
$ cd armadeus/buildroot/build_arm/linux-2.6.XX.YY

And apply the patch with the -p1 option.

$ patch -p1 < ../../../patches/adeos/adeos-ipipe-2.6.XX-arm-1.9-01.patch

Now, let's see if everything went fine. Run the command:

$ find . -name '*.rej'

If you get any results, it means that some errors occured while trying to patch. In a such case, you will have to apply the changes manually.
These pages can help you:

• http://www.linuxdocs.org/HOWTOs/Kernel-HOWTO-6.html
• http://www.tuxfinder.com/french/HOWTOhtml/Kernel-HOWTO-5.html (French)

Configure Adeos

Adeos is now install, let's configure it a bit.

In the kernel directory, run the command

$ make menuconfig

And select the following options

Kernel Features --->
    [*] Interrupt Pipeline
    (4)   Max domains
    [ ]   Maintain code compatibility with older releases  

Optionally, you can also enable ipipe debugging

 Kernel hacking  --->
    [*] I-pipe debugging
    [*]   Check for illicit cross-domain calls (NEW)
    [*]   Latency tracing
    [*]     Enable tracing on boot (NEW)
    [*]     Instrument function entries (NEW)
    [*]     Trace IRQs-off times (NEW)
    (14)    Depth of trace log (14 => 16Kpoints, 15 => 32Kpoints) (NEW)
    [*]     Use vmalloc'ed trace buffer (NEW)
    [*]     Enable panic back traces (NEW)       

Well, it's now time for compilation !

$ cd ../../../..
$ cd armadeus
$ make

Then check that your kernel size is lower than 1.5 Mb

$ ls -lh buildroot/binaries/armadeus/linux-kernel-2.6.XX.Y-arm.bin
-rw-r--r-- 1 creber users 1.4M 2008-04-05 23:29 buildroot/binaries/armadeus/linux-kernel-2.6.XX.Y-arm.bin

And Transfer the kernel to the board.

Links

• A page describing how to use the ipipe tracer option. http://www.xenomai.org/index.php/I-pipe:Tracer