User manual
U-Boot for MPL SBC
User Manual
2003 by MPL AG
21
MEH-10082-002 Rev. D
High-Tech • Made in Switzerland
FFC50000 RO FFC60000 RO FFC70000 RO FFC80000 RO FFC90000 RO
FFCA0000 RO FFCB0000 RO FFCC0000 RO FFCD0000 RO FFCE0000 RO
FFCF0000 RO FFD00000 RO FFD10000 RO FFD20000 RO FFD30000 RO
FFD40000 RO FFD50000 RO FFD60000 RO FFD70000 RO FFD80000 RO
FFD90000 RO FFDA0000 RO FFDB0000 RO FFDC0000 RO FFDD0000 RO
FFDE0000 RO FFDF0000 RO FFE00000 RO FFE10000 RO FFE20000 RO
FFE30000 RO FFE40000 RO FFE50000 RO FFE60000 RO FFE70000 RO
FFE80000 RO FFE90000 RO FFEA0000 RO FFEB0000 RO FFEC0000 RO
FFED0000 RO FFEE0000 RO FFEF0000 RO FFF00000 RO FFF10000 RO
FFF20000 RO FFF30000 RO FFF40000 RO FFF50000 RO FFF60000 RO
FFF70000 RO FFF80000 RO FFF90000 RO FFFA0000 RO FFFB0000 RO
FFFC0000 RO FFFD0000 ERO FFFE0000 ERO FFFF0000 ERO FFFF2000 ERO
FFFF4000 ERO FFFF6000 ERO FFFF8000 ERO FFFFA000 ERO FFFFC000 ERO
FFFFE000 RO
=>
Note: The protection mechanism does not use the hardware protection feature of the flash. It is
a software solution, and the protection is volatile, which means that after a reboot only
the bootloader is protected.
3.3.35 rarpboot- boot image via network using RARP/TFTP protocol
Used to load the image via the network using RARP/TFTP protocol.
Abbreviation: rarp
=> help rarp
rarpboot [loadAddress] [bootfilename]
=>
To use this command, you need to set-up a rarp server.
3.3.36 reset - Perform RESET of the CPU
With the reset command you can restart the board:
=> reset
Initializing SDRAM, Please stand by..................
U-Boot 0.4.0 (Jul 11 2003 - 10:33:29)
(c) 2003 by MPL AG Switzerland, MEV-10072-001 released
3.3.37 run - run commands in a environment variable
This command is used to execute commands which are stored in a environment variable.
=> help run
run var [...]
- run the commands in the environment variable(s) 'var'
=>
Following example shows how to change the boot arguments, and boots an image stored in the flash:
=> printenv bootyard
bootyard=setenv bootargs console=ttyS0,9600 root=/dev/ram0 ide=nodma; bootm ffc00000
=> run bootyard
## Booting image at ffc00000 ...
Image Name: kernel and initrd for MIP405
Created: 2002-04-16 13:17:43 UTC
Image Type: PowerPC Linux Multi-File Image (gzip compressed)
Data Size: 3613150 Bytes = 3.4 MB
Load Address: 00000000
Entry Point: 00000000
Contents:
Verifying Checksum ... OK
Uncompressing Multi-File Image ... OK
Loading Ramdisk to 07cd8000, end 07f878ae ... OK
Linux version 2.4.18-rc1-yard-boot (root@m05denis) (gcc version 2.95.3 20010315 (r
elease)) #3 Thu Apr 11 11:23:27 Local time zone must be set--see zic manual page 2
002
On node 0 totalpages: 32768
zone(0): 4096 pages.
zone(1): 28672 pages.
zone(2): 0 pages.
Kernel command line: console=ttyS0,9600 root=/dev/ram0 ide=nodma
ide_setup: ide=nodmaIDE: Prevented DMA
Calibrating delay loop... 395.67 BogoMIPS