Dell PowerEdge R820 Technical Guide - Page 45

Dell LOM (LAN [Network Interface] on Motherboard) Memory Details Size: Type [Flash PROM, EEPROM]: Can user programs or operating system write data to it during normal operation? Purpose? [boot code] How is data input to this memory? How is this memory write protected? Remarks: Server System Event Log Memory/FRU Size: Type [Flash PROM, EEPROM]: Can user programs or operating system write data to it during normal operation? Purpose? [boot code] How is data input to this memory? How is this memory write protected? Remarks TPM (Trusted Platform Module; For boards shipped outside of China; Boards sold to destinations in China do not have TPM at this time) Size: Type [Flash PROM, EEPROM]: Can user programs or operating system write data to it during normal operation? Purpose? [boot code] How is data input to this memory? How is this memory write protected? Remarks 4Mb (512KB) Flash Yes, under software control. Contains LOM boot code and config data Requires vendor provided firmware file and loader program used during factory assembly or possible field update. A system loaded with arbitrary data in firmware memory would not operate. Software control. Details 4 KB SEEPROM No Store System Events BMC controller write Not write protected Details Unspecified size of user ROM, RAM, EEPROM; 128 bytes of OTP memory included ROM, RAM, EEPROM Yes, OS and applications that conform to the TCG standard can write data to the TPM during normal operation. Access to the NV Storage is controlled by the TPM owner. Trusted Platform Module NV storage. May be used to securely storage of encryption keys. TCG TPM Specification defined command interface or Using TPM Enabled operating systems As defined by the TCG TPM Specification, protection of this NV memory area is configurable by the TPM owner. PowerEdge T110 II Technical Guide 45