DevKit8500D/A User Manual - DMCS Pages for Students

1) X-loader is a first level bootstrap program. After the system start-up, the ROM inside the CPU
will copy the x-loader to internal RAM and perform its routine work. Its main function is to initialize
the CPU, copy u-boot into the memory and give the control to u-boot;
2) U-boot is a second level bootstrap program. It is used for interacting with users and updating
images and leading the kernel;
3) The latest 2.6.x kernel is employed here and it can be customized based on DevKit8500D/A;
4) Rootfs employs Open-source system. It is small in capacity and powerful, very suitable for
embedded systems;
3.3 Software Features
Item
Note
NAND / ONENAND
x-loader
MMC/SD
FAT
BIOS
NAND / ONENAND
u-boot
MMC/SD
FAT
Kernel
Device Driver
Linux-2.6.x
Serial
Rtc
Net
Flash
LCD
Touch
screen
mmc/sd
usb otg
NET
Supports ROM/CRAM/EXT2/EXT3/FAT/NFS/
JFFS2/UBIFS and various file systems
Series driver
Hardware clock driver
10/100M Ethernet card DM9000 driver
nand flash driver (supports nand boot)
TFT LCD driver
Touch screen controller ads7846 driver
mmc/sd controller driver
usb otg 2.0 driver (can be configured as slave
device currently)
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