June 2017
Intermediate to advanced
478 pages
13h 14m
English
Content preview from Mastering Embedded Linux Programming - Second Edition
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Accessing flash memory from Linux
Raw NOR and NAND flash memory is handled by the Memory Technology Device subsystem, or MTD, which provides basic interfaces to read, erase, and write blocks of flash memory. In the case of NAND flash, there are also functions to handle the OOB area and to identify bad blocks.
For managed flash, you need drivers to handle the particular hardware interface. MMC/SD cards and eMMC use the mmcblk driver; CompactFlash and hard drives use the SCSI disk driver, sd. USB flash drives use the usb_storage driver together with the sd driver.
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