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System and method for automatically controlling JTAG topology by multi-node server

A server and multi-node technology, which is applied in the direction of instruments, hardware monitoring, electrical digital data processing, etc., can solve the problems of uncertain power-on status, non-working, node standby, etc., and achieve intelligentization, novel overall design, and easy installation and deployment simple effect

Inactive Publication Date: 2018-08-03
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a multi-node server, the power-on status of each node is uncertain, and some nodes may be on standby or not working

Method used

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  • System and method for automatically controlling JTAG topology by multi-node server
  • System and method for automatically controlling JTAG topology by multi-node server

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Embodiment 1

[0031] In a multi-node server, when some nodes are not powered on, in order to ensure the normal access of other chips on the JTAG link, this embodiment proposes a method for the multi-node server to automatically control the JTAG topology. First, the top-level monitoring and management of the multi-node server The system recognizes the power-on or working status of each sub-node, then automatically adjusts the JTAG topology, removes the unpowered node chip from the topology, and ensures the normal access of the JTAG link.

[0032] The method for automatically controlling the JTAG topology of the multi-node server of the present embodiment, the implementation process includes:

[0033] Step 1, automatically obtain the power-on or working status of each node chip through the top-level monitoring and management system of the multi-node server;

[0034] Step 2, the JTAG interface is connected to the JTAG test tool, and the JTAG topology is automatically adjusted according to the ...

Embodiment 2

[0043]The method for automatically controlling the JTAG topology of a multi-node server proposed in this embodiment is another embodiment of the present invention. On the basis of the method for automatically controlling the JTAG topology of the multi-node server in Embodiment 1, each A SWITCH chip is set at each node chip, and according to the power-on working state of the node chip, JTAG selects whether to connect to the node chip through the SWITCH chip, and then realizes the purpose of removing the unpowered chip from the JTAG topology structure, which increases the present invention The practicability and feasibility of the technical solution.

[0044] The method for automatically controlling the JTAG topology of the multi-node server of the present embodiment, its specific implementation process includes:

[0045] Step 1, automatically obtain the power-on or working status of each node chip through the top-level monitoring and management system of the multi-node server; ...

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Abstract

The invention discloses a system and a method for automatically controlling JTAG topology by a multi-node server, and relates to the field of server system design. The method comprises the steps of automatically obtaining power-on or working states of node chips through a top monitoring management system of the multi-node server; according to an actual condition, automatically adjusting a JTAG topology structure; and performing corresponding BYPASS processing on TDI and TDO signals in JTAG signals, and removing non powered-on node chips from the JTAG topology structure, thereby enabling a JTAGlink to perform normal access. The multi-node server can be ensured to normally access the node chips through the JTAG link when being started up each time; and the system for automatically controlling the JTAG topology is matched with hardware circuit design, is intelligent, controllable, novel in overall design and simple in installation and deployment, and has relatively high promotional and useful values.

Description

technical field [0001] The invention relates to the field of server system design, in particular to a system and method for multi-node server automatic control of JTAG topology. Background technique [0002] JTAG (Joint Test Action Group; Joint Test Working Group) is an international standard test protocol (IEEE 1149.1 compatible) for internal testing of chips. At present, most advanced devices support the JTAG protocol, define a TAP test access port inside the device, and test the internal nodes through a special JTAG test tool. The JTAG test allows multiple devices to be connected in series through the JTAG interface to form a JTAG chain to test each device separately. [0003] In a multi-socket or blade server, the system is divided into multiple node designs. In order to reduce the design cost, the RAS characteristics of the system, namely Reliability, Availability and Serviceability, are improved through a multi-level monitoring and management system. According to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/30
CPCG06F11/3048G06F11/3055
Inventor 姜云轩
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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