MMC tools introduction

There is one MMC test tools called mmc-utils, which is maintained by Chris Ball, you can find it at the below public git repository:

https://git.kernel.org/cgit/linux/kernel/git/cjb/mmc-utils.git/

Functions

The mmc-utils tools can do the following:

• Print and parse extcsd data.
• Determine the eMMC writeprotect status.
• Set the eMMC writeprotect status.
• Set the eMMC data sector size to 4KB by disabling emulation.
• Create general purpose partition.
• Enable the enhanced user area.
• Enable write reliability per partition.
• Print the response to STATUS_SEND (CMD13).
• Enable the boot partition.
• Set Boot Bus Conditions.
• Enable the eMMC BKOPS feature.
• Permanently enable the eMMC H/W Reset feature.
• Permanently disable the eMMC H/W Reset feature.
• Send Sanitize command.
• Program authentication key for the device.
• Counter value for the rpmb device will be read to stdout.
• Read from rpmb device to output.
• Write to rpmb device from data file.
• Enable the eMMC cache feature.
• Disable the eMMC cache feature.
• Print and parse CID data.
• Print and parse CSD data.
• Print and parse SCR data.