®
8000 S. Federal Way, P.O. Box 6, Boise, ID 83707-0006, Tel: 208-368-3900
[email protected] www.micron.com Customer Comment Line: 800-932-4992
Micron, the M logo, and the Micron logo are trademarks of Micron Technology, Inc. All other trademarks are the property of
their respective owners.
TN-29-16: Boot-from-NAND with the TI OMAP2420 Processor
Conclusion
PDF: 09005aef81fd5f2d / Source: 09005aef81fd5ecd
Micron Technology, Inc., reserves the right to change products or specifications without notice.
tn2916_boot_from_nand_omap2420.fm - Rev. D 6/07 EN
18
©2006 Micron Technology, Inc. All rights reserved.
Recommendations for Maximizing Reliability of Boot Code
• When programming the X-Loader, U-Boot, OS kernel, and root file system to the
NAND Flash device, program each page in its entirety with a single program opera-
tion.
• Verify that the X-Loader, U-Boot, OS kernel, and root file system were programmed
correctly by performing a read-verify to compare the NAND Flash contents against
the original binary image.
• Even a single bad bit in the code can cause a system failure, so error correction should
be maximized in code storage areas of the NAND Flash.
• Avoid excessive reads to the area of the NAND Flash where code is stored. When
repeated accesses are required, the code should be copied to the DRAM
.
This mini-
mizes the probability of read-disturb errors in the NAND Flash device.
Conclusion
The OMAP2420 processor provides a solid foundation for system designers developing
boot-from-NAND solutions using the Micron MT29F1G08ABB NAND Flash device. With
boot-from-NAND capability structured as described in this technical note, embedded
systems designers can take advantage of lower-cost NAND Flash for storage and can
achieve higher performance using DRAM as the XIP memory.
