Intel X38ML Product Specification - Page 97
IPMI Serial Interface
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Intel® Server Board X38ML Platform Management followed by a two-second pause must be interpreted as a single escape. followed within two seconds by one or more characters that do not form a sequence described in this specification must be interpreted as plus the character or characters, not as an escape sequence. The escape sequence in the following table is an input sequence. This means it is sent to the BIOS from the remote terminal. Table 41. Console Redirection Escape Sequences for Headless Operation Escape Sequence RrR This item is set to "disable" by default. Description Remote Console Reset 5.23.2.3 Limitations BIOS Console redirection terminates after an EFI-aware operating system calls EFI Exit Boot Services. The operating system is responsible for continuing console redirection after that. BIOS console redirection is a text console. Graphical data, such as a logo, is not redirected. 5.23.2.4 Interface to Server Management If the BIOS determines that console redirection is enabled, it reads the current baud rate and passes this value to the appropriate management controller via the Intelligent Platform Management Bus (IPMB). 5.23.3 IPMI Serial Interface The system provides a communication serial port with the BMC. A multiplexer, controlled by the BMC, determines if the COM1 external connector is electrically connected to the BMC or to the standard serial port of the Super I/O. See Section 14, titled "IPMI Serial/Modem Interface", in the Intelligent Platform Management Interface Specification, Version 2.0, for information about these features. 5.23.3.1 Channel Access Modes The BIOS supports the four different channel access modes described in Table 6-4 of the Intelligent Platform Management Interface Specification, Version 2.0. 5.23.3.2 Interaction with BIOS Console Redirection BIOS Console Redirection provides VT-UTF8 console redirection support in Intel's server BIOS products. This implementation meets the functional requirements set forth in the Microsoft Windows 2003* WHQL requirements for headless operation of servers. It also maintains a necessary degree of backward compatibility with existing Intel® server BIOS products and meets the architectural requirements of Intel server products in development. The server BIOS has a console that interacts with a display and keyboard combination. The BIOS instantiates sources and input/output data in the form of BIOS Setup screens, Boot Revision 1.3 85 Intel order number E15331-006