Stamp9261/Panelcard Linux 2.6.36 Release Notes
----------------------------------------------

Requirements:
- Vanilla source for Linux 2.6.36
  http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.36.tar.bz2
  or newer
  http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.36.4.tar.bz2
- Stamp9261/Panelcard 2.6.36 patch

The following things have to be considered when updating to Linux 2.6.36:

1. The default toolchain that comes with the Starterkit is not able to
   compile the kernel. You have to use a newer toolchain, e.g.
   http://www.armbedded.eu/download/taskit-0.1/sdk/taskit-0.1-arm-linux-gnueabi-taskit.tar.bz2
   or anything newer. If you have a current Starterkit DVD you can also
   use the one provided for Stamp9G20/PortuxG20.

2. The default config (stamp9261_defconfig) enables EABI with OABI
   compatibility. This allows you use standard OABI rootfs, but also
   newer EABI filesystems. But this costs some performance, therefore
   disable the one you don't need in the kernel config.

3. You can now build one kernel, that can be booted on all systems
   regardless of display type. To differentiate between the boards, add
   the parameter "board_stamp9261.display" to your bootargs. See the
   following table for possible values:

   Stamp9261 base board   | variable content
   -----------------------+------------------------------------
   no base, just Stamp261 | leave the variable out 
   Panel-Card 35          | et035005dm6
   Panel-Card 57 QVGA     | et057011dh6
   Panel-Card 57 VGA      | et057009dhu
   Panel-Card 70          | et070000dm6, you can also use
                          | at070tn83 here for newer hardware
                          | revisions but it makes no difference

   So for Panel-Card 57 VGA add
      board_stamp9261.display=et057009dhu
   to your bootargs

4. The bootloader of the Panel-Card 35 passes a different machine id to
   the kernel than all the Stamp9261 boards, so one has to do a little
   workaround here (the provided 2.6.22 kernel sources had a workaround
   integrated). After compiling the kernel, execute the following
   commands before building the uImage:

      devio > tas9261-shim 'wl 0xe3a01c06,4' 'wl 0xe3811038,4'
      cat tas9261-shim arch/arm/boot/zImage > arch/arm/boot/zImage-tmp
      mv arch/arm/boot/zImage-tmp arch/arm/boot/zImage

   Now build the uImage and install it on the device. The "devio"
   command can be left out on the following installs.

5. To reduce the kernel patch size and make it possible to use one image
   for all devices, basic "calibration" of the touchscreen is not done,
   so interfacing the touchscreen via the mouse interface is not possible
   anymore. Every application should use tslib.

6. Support for some Panel-Card EVB "devices" was left out (leds,
   buttons, matrix keypad, knob)