2. Loongson LS1B

The LS1B is a development board made by Loongson Technology Corp. Ltd.

The board has

• Loongson LS1B SoC 250 MHz;
• 64 MiB SDRAM;
• 512 KiB SPI boot ROM;
• 128M x 8 Bit NAND Flash Memory;
• 2 x RS232 serial interfaces (DB9 connectors);
• 2 x Ethernet interfaces;
• 4 x USB interfaces;
• microSD card slot;
• LCD display (480x272);
• audio controller;
• beeper;
• buttons;
• EJTAG 10-pin connector.

The board uses PMON2000 as bootloader.

2.1. Running barebox

1. Connect to the boards’s UART2 (115200 8N1);
2. Turn board’s power on;
3. Wait Press <Enter> to execute loading image prompt and press the space key.
4. Build barebox and upload zbarebox.bin via Ymodem to the board:

PMON> ymodem base=0xa0200000

5. Run barebox

PMON> g -e 0xa0200000

2.2. Links

• http://en.wikipedia.org/wiki/Loongson
• http://www.linux-mips.org/wiki/Loongson
• https://github.com/loongson-gz
• http://www.linux-mips.org/wiki/PMON_2000
• http://www.opsycon.se/PMON2000/Main