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→Embedded Linux systems with eMMC or SD cards
In practice, e.MMC's integrate some registers providing specific information about the health status. These registers can be accessed with the <code>mmc-utils</code>, which are documented [https://www.kernel.org/doc/html/latest/driver-api/mmc/mmc-tools.html here]. Interestingly, JEDEC standard also defines a set of registers (<code>VENDOR_PROPRIETARY_HEALTH_REPORT</code>) that vendors are free to use for providing further, fine-grained information about the device's health status. Engineers and system integrators are supposed to contact the e.MMC manufacturer to get the required tools for accessing such registers.
The sections related to eMMC-based use cases are the result of a joint effort between [https://www.westerndigital.com/ Western Digital] (which purchased [https://en.wikipedia.org/wiki/SanDisk SanDisk] in 2016), [https://www.lauterbach.it Lauterbach Italy], and DAVE Embedded Systems. Parts of such sections are retrieved from the White Paper ''TRACE32 log method for analysing accesses to an eMMC device'' by Lauterbach, which is freely available for download [https://www.lauterbach.com/publications/trace32_log_method_for_analysing_accesses_to_an_emmc_device.pdf here].
[[File:Lauterbach-logo.png|center|thumb|308x308px]]
=== Device's built-in advanced functionalities ===
As explained in [[#Embedded Linux systems with eMMC or SD cards|this section]], e.MMC feature specific registers for monitoring the health of the device. Some of these registers provides a Following is a dump of the standard registers of the targtetarget's e.MMC related to the wear-out status of the device, namely <code>DEVICE_LIFE_TIME_EST_TYP_B</code>, <code>DEVICE_LIFE_TIME_EST_TYP_B</code>, and <code>PRE_EOL_INFO</code>:<pre class="board-terminal">
root@desk-mx8mp:~# mmc extcsd read /dev/mmcblk2 | grep LIFE
eMMC Life Time Estimation A [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]: 0x01
