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What are the MTD Utilities?

April 26, 2017configuration Flash Kernel mtd utilities

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What are the MTD Utilities?

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The MTD Utilities are a collection of tools that allow the user to interact with the MTD subsystem in the kernel to perform operations on Flash devices. The most commonly used utilities are: • flash_erase – Erases an erase block of flash • flash_eraseall – Erases the entire flash device • flashcp – Copies data into NOR flash • flash_info – Displays information about Flash devices • flash_lock – Lock flash pages to prevent writing • flash_unlock – Unlock flash pages to allow writing • mkfs.jffs2 – Create a JFFS2 file system image from an existing file system • nandwrite – Write an input file (i.e. JFFS2 or YAFFS2 image) to the NAND Flash device These utilities are often used to write file system images to the Flash device on an embedded system.