Suggestion needed for buying a embedded board with my requirements

Hi,

Can anybody suggest a board in which I have to practice embedded Linux?
My requirements are:

Software Support:
1) The board should have Uboot boot loader supported and source code should be available for that.
2) Linux kernel source should be available for that board.
3) Root File system content should be available to add/strip/modify features based on my need.

Hardware features:
1) Should have at least dual core CPU(good to have Quad core).
2) Audio support is good to have.
3) CPU Clock Speed greater than 400/500 MHZ.
4) Should come with JTAG interface and tools from the same vendor I am buying board(to flash binaries in the dead board and erase all the content to make as dead board).
5) Should have at least 1GB of RAM.
6) Should have support for peripherals like UART,SPI,I2C , USB, Ethernet, WIFI capabilities,SD card.
7) Should support CAN protocol.
8) any one graphic display support is enough but should have at least one.
9) PCI interface, Bluetooth, Camera interface, SPI are optional and good to have, not mandatory.

My budget is around 200 US $(+25 US$ acceptable).

Please give ur suggestions I will consider and analyze everyone's.

If you suggest the vendor also it will be fine and I am located in India.

Thanks,
Ayyappan M.

http://www.at91.com/linux4sam/bin/vi...Som1EKMainPage

To elaborate a bit.

I've used the SOM very successfully.

The board is a developer's kit for staging your software. Eventually one would need to build a carrier board that suits their particular needs.

You have a very lengthy list of requirements and preferences, I can't say that this SOM would address them all, but it has a great deal of the features in your list.

Hi,

I want to learn linux kernel with multiple cpu core configuration enabled and also the Internet of Things.
Also I want to learn to customize bootstrap/NOR flash code using Uboot(ie. I want to have knowledge in controlling from boot strap to full system loading. bootloader -> kernel -> rootfs).

Now my doubts are :
1) do this board has configured as multiple core as Cortex A5 comes with two variants single core and four cores.
2) Can I have control over the code from bootstrap as I see in the link it was just flashing of SD card with the tool?
3) I want to have advanced knowledge of IoT features like wifi. This is not supporting wifi.
4) And also I need 1GB of RAM to load well stuffed features. But it seems of low memory configuration.

So considering these requirements can you suggest any other high configuration board?

Best suggestion I have is to try a couple of boards and determine what suits you.