4. 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.
4.1. Running barebox¶
- Connect to the game console’s UART (see. http://a320.emulate.su/2012/01/19/uart-na-ritmix-rzx-50/);
- 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;
- Boot Ritmix linux and login;
- Build barebox and upload barebox.bin via Zmodem to the board:
# cd /tmp
# rz
- Write barebox to onboard flash:
# dd if=barebox.bin of=/dev/mmcblk0 seek=1048576 bs=1 count=262144
- Reboot RZX-50, next in U-Boot console start barebox:
CETUS # msc read 0xa0800000 0x100000 0x40000; g a0800000
