Support for ROM chips in bus mapping

modulename: map_rom.ko

configname: CONFIG_MTD_ROM

Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>RAM/ROM/Flash chip drivers
└─>Support for ROM chips in bus mapping
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This option enables basic support for ROM chips accessed through
a bus mapping driver.

source code:
drivers/mtd/chips//map_rom.c
depends
CONFIG_MTD