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chumbyone Chumby Industrie's Falconwing
=======================================
This device is also known as "chumby one" (http://www.chumby.com/)
This CPU card is based on a Freescale i.MX23 CPU. The card is shipped with:
* 64 MiB synchronous dynamic RAM (DDR type)
Memory layout when barebox is running:
* 0x40000000 start of SDRAM
* 0x40000100 start of kernel's boot parameters
* below malloc area: stack area
* below barebox: malloc area
* 0x42000000 start of barebox
How to get the bootloader binary image
--------------------------------------
Using the default configuration:
.. code-block:: sh
make ARCH=arm chumbyone_defconfig
Build the bootloader binary image:
.. code-block:: sh
make ARCH=arm CROSS_COMPILE=armv5compiler
**NOTE:** replace the armv5compiler with your ARM v5 cross compiler.
How to prepare an MCI card to boot the "chumby one" with barebox
----------------------------------------------------------------
* Create four primary partitions on the MCI card
* the first one for the bootlets (about 256 kiB)
* the second one for the persistant environment (size is up to you, at least 256k)
* the third one for the kernel (2 MiB ... 4 MiB in size)
* the fourth one for the root filesystem which can fill the rest of the available space
* Mark the first partition with the partition ID "53" and copy the
bootlets into this partition (currently not part of barebox!).
* Copy the default barebox environment into the second partition
(no filesystem required).
* Copy the kernel into the third partition (no filesystem required).
* Create the root filesystem in the fourth partition. You may copy an
image into this partition or you can do it in the classic way:
mkfs on it, mount it and copy all required data and programs into
it.
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