Taskit ARM9 CPU-module with Linux Stamp9261-series Stamp9261 (64F/64R) 542310 Data Sheet

Linux Guide

The crc32 command calculates the check sum for a memory range (from addr1 to 
addr1+count). You can optionally indicate addr2 to save the calculated check sum there.

For example:

U-Boot> crc32 21000000 100 20000000
CRC32 for 21000000 ... 210000ff ==> e8d6cfbc

U-Boot> md 20000000 10
20000000: e8d6cfbc 0000000b 0000000c 0000000d ................

flinfo (fli for short)

Outputs information about the known flash module. flinfo outputs the start addresses of all 
sectors, as well as information about write protection on individual sectors.

For example:

U-Boot> fli
DataFlash:AT45DB321

Nb pages: 8192
Page Size: 528

Size= 4325376 bytes
Logical address: 0xC0000000

Area 0: C0000000 to C0007FFF (RO)
Area 1: C0008000 to C001FFFF (RO)

Area 2: C0020000 to C0027FFF
Area 3: C0028000 to C041FFFF

Bank # 1: AMD Chip: LV320B 32 Mbit
Size: 4 MB in 71 Sectors

Sector Start Addresses:
10000000 (RO) 10002000 (RO) 10004000 (RO) 10006000 (RO) 10008000 (RO)

1000A000 (RO) 1000C000 (RO) 1000E000 (RO) 10010000 (RO) 10020000 (RO)
10030000 10040000 10050000 10060000 10070000

103A0000 103B0000 103C0000 103D0000 103E0000
103F0000

imls

Lists all images stored in flash memory.

For example:

U-Boot> imls
Image at 10030000:

Image Name: plinux
Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 739208 Bytes = 721.9 kB
Load Address: 21000000

Entry Point: 21000000
Verifying Checksum ... OK

Version 1.26

 (2008-04-30)