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Ritmix RZX-50
=============
Ritmix RZX-50 is a portable game console for the Russian market.
The portable game console has
* Ingenic JZ4755 SoC;
* 64 MiB SDRAM;
* 4 GiB microSDHC card / 4 GiB NAND type Flash Memory (internal boot device);
* RS232 serial interface (LV-TTL levels on the board!);
* LCD display (480x272);
* Video out interface;
* 1xUSB interface;
* buttons.
The game console uses U-Boot 1.1.6 as bootloader.
Running barebox
---------------
1. Connect to the game console's UART
(see. http://a320.emulate.su/2012/01/19/uart-na-ritmix-rzx-50/);
2. Unblock U-Boot console
(see. http://a320.emulate.su/2012/01/25/rzx-50-dostup-k-konsoli-u-boot/);
Please note that U-Boot's Zmodem support does not work;
3. Boot Ritmix linux and login;
4. Build barebox and upload ``barebox.bin`` via Zmodem to the board:
.. code-block:: none
# cd /tmp
# rz
..
5. Write barebox to onboard flash:
.. code-block:: none
# dd if=barebox.bin of=/dev/mmcblk0 seek=1048576 bs=1 count=262144
..
6. Reboot RZX-50, next in U-Boot console start barebox:
.. code-block:: none
CETUS # msc read 0xa0800000 0x100000 0x40000; g a0800000
..
Links
-----
* http://www.ritmixrussia.ru/products/252/entertainment/game/rzx-50
* ftp://ftp.ingenic.cn/2soc/4755/JZ4755_ds.pdf
* ftp://ftp.ingenic.cn/3sw/01linux/01loader/u-boot/u-boot-1.1.6-jz-20110719-r1728-add-jz4770.patch.bz2
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