Linux Driver Revived For Finally Being Able To Read DDR4 Memory SPD Data
In Summary : DDR4 memory has been around for several years already yet the mainline Linux kernel doesn't have a driver for reading the...
https://updatesinfosec.blogspot.com/2018/10/linux-driver-revived-for-finally-being.html
In Summary :
DDR4 memory has been around for several years already yet the mainline Linux kernel doesn't have a driver for reading the SPD EEPROMs abiding by the JEDEC EE1004 standard as used by DDR4 SDRAM memory modules.
In November of last year, SUSE developer Jean Delvare sent out a patch for a new "ee1004" driver for reading the SPD (Serial Presence Detect) data on DDR4 memory modules. That patch/driver fell through the cracks while finally Jean has got around to resending out the driver on the kernel mailing list.
Delvare tackled this code originally as part of a SUSE Hackweek and besides this kernel support to expose the SPD information, he also prepared patches for the decode-dimms user-space utility for being able to then parse this information. The SPD data is what contains the standardized timing/CAS latency data, manufacturing data, and other memory module information like rank, nominal voltage, and even smaller characteristics like the physical module height/thickness. [...]
kindly refer the following link as follow up :
https://www.phoronix.com/scan.php?page=news_item&px=Linux-DDR4-SPD-Driver-EE1004
DDR4 memory has been around for several years already yet the mainline Linux kernel doesn't have a driver for reading the SPD EEPROMs abiding by the JEDEC EE1004 standard as used by DDR4 SDRAM memory modules.
In November of last year, SUSE developer Jean Delvare sent out a patch for a new "ee1004" driver for reading the SPD (Serial Presence Detect) data on DDR4 memory modules. That patch/driver fell through the cracks while finally Jean has got around to resending out the driver on the kernel mailing list.
Delvare tackled this code originally as part of a SUSE Hackweek and besides this kernel support to expose the SPD information, he also prepared patches for the decode-dimms user-space utility for being able to then parse this information. The SPD data is what contains the standardized timing/CAS latency data, manufacturing data, and other memory module information like rank, nominal voltage, and even smaller characteristics like the physical module height/thickness. [...]
kindly refer the following link as follow up :
https://www.phoronix.com/scan.php?page=news_item&px=Linux-DDR4-SPD-Driver-EE1004
