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/pub/scm/utils/mmc/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. WWW: https://www.kernel.org/doc/Documentation/mmc/mmc-tools.txt