flash

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

		Flash Memory Types

		Flash Memory Types

The flash memory must support sector erase if it is
to be used to hold configuration settings. PMON/IMON is currently
aware of the following devices that support sector erase.

AMD Am29F010 - 5v 128KB
AMD Am29F040 - 5v 512KB
Atmel AT29F040 - 5v 512KB
Intel 28F010 - 12v 128KB
Intel 28F020 - 12v 256KB
--
 

Devices from other manufacturers that conform to the same programming
method can be easily added to the table located in the file
nvram.c.  All you need to know is the flashcode.