AN2748 Datasheet, PDF (7/40 Pages) List of Unclassifed Manufacturers – Genesi Pegasos II Kernel and NFS Facility

— TFTP server
— NFS Portmap server
— DHCP server
— Minicom, a serial console emulator
— Target root file system
• Hardware requirements
— Large hard drive (40GB+)
— Lots of RAM (256MB+)
— Fast processor, e.g. MPC744x at 1GHz+
— Fast or GigE network interface
The target, on the other hand, has the following characteristics
• Evaluation/engineering sample boards
• Little initial software
• Serial and/or network console
and the following requirements
• Firmware/BootROM (such as DINK32 or U-boot)
— Download capability: TFTP client
— Serial console
— Execute a user program
— Pass platform information to the OS
• Hardware
— Ethernet interface
— Serial port
— RAM
— No hard drive
Figure 3., “Putting It All Together”, shows how all the parts interact.
Host
Hard Drive
NFS
Root
File
System
NFS
Root
File
System
Exports
Network
PPC Target
Board(s)
/opt/ppc_82xx
/opt/ppc_74xx
NFS Mount
General Theory
Figure 3. Putting It All Together
The target will mount the NFS root file system with an NFS mount command. The host will export the NFS root file
systems to the target boards, each board has its own NFS root file system, shown here we have two targets, and two
Genesi Pegasos II Kernel and NFS Facility, Rev. 0
Freescale Semiconductor
7