Section 10.5. Chapter Summary


10.5. Chapter Summary

  • The Memory Technology Devices (MTD) subsystem provides support for memory devices such as Flash memory in the Linux kernel.

  • MTD must be enabled in your Linux kernel configuration. Several figures in this chapter detailed the configuration options.

  • As part of the MTD kernel configuration, the proper Flash driver(s) for your Flash chips must be selected. Figure 10-4 presented the collection of chip drivers supported in a recent Linux kernel snapshot.

  • Your Flash memory device can be managed as a single large device or can be divided into multiple partitions.

  • Several methods are available for communicating the partition information to the Linux kernel. These include Redboot partition information, kernel command-line parameters, and mapping drivers.

  • A mapping driver, together with definitions supplied by your architecture-specific board support, defines your Flash configuration to the kernel.

  • MTD comes with a number of user space utilities to manage the images on your Flash devices.

  • The Journaling Flash File System 2 (JFFS2) is a good companion to the MTD subsystem for small, efficient Flash-based file systems. In this chapter, we built a JFFS2 image and mounted it as root on our target device.

10.5.1. Suggestions for Additional Reading

MTD Linux home page
www.linux-mtd.infradead.org/

Redboot user documentation
http://ecos.sourceware.org/ecos/docs-latest/redboot/redboot-guide.html

Common Flash Memory Interface Specification
AMD Corporation
www.amd.com/us-en/assets/content_type/DownloadableAssets/cfi_r20.pdf



Embedded Linux Primer(c) A Practical Real-World Approach
Embedded Linux Primer: A Practical Real-World Approach
ISBN: 0131679848
EAN: 2147483647
Year: 2007
Pages: 167

Similar book on Amazon

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net