CN102707781A

CN102707781A - Shutdown and reset system and method of mainboard software

Info

Publication number: CN102707781A
Application number: CN2012101490545A
Authority: CN
Inventors: 吴少刚; 张福新; 徐锋; 邓铭; 张斌; 崔太有
Original assignee: JIANGSU LEMOTE TECHNOLOGY Corp Ltd
Current assignee: JIANGSU LEMOTE TECHNOLOGY Corp Ltd
Priority date: 2012-05-15
Filing date: 2012-05-15
Publication date: 2012-10-03

Abstract

The invention discloses a shutdown and reset system and a shutdown and reset method of mainboard software. The shutdown and reset system comprises a processer, a single EC (electronic computer) chip and a main power supply control chip on a hardware mainboard, wherein the processor is a processer of a hardware mainboard without a south bridge, the processor sends I2C signals, and outputs the I2C signals to an input end of the EC chip; and an output end of the EC chip is connected with an input end of the power supply control chip. The shutdown and reset method of the mainboard software comprises a shutdown method and a reset method. The integral type and desk type computers can be shut down and reset by adopting the independent EC chip so as to realize a domestic loongson CPU (central processing unit) mainboard without the south bridge and a mainboard of a Super IO (input/output) control chip. The shutdown and reset system has low power consumption. The power consumption of the entire mainboard is less than 30watt, and the CPU power consumption on the mainboard is less than 5watt.

Description

A kind of mainboard software shutdown resetting system and method

Technical field

The present invention relates to integral computer and desktop computer, particularly relate to a kind of shutdown of computer motherboard software and resetting system and method for processor.

Background technology

Development along with homemade processor chips; Use the appearance of the computing machine of all kinds of processor; Formed its exclusive motherboard hardware design style; Wherein more special a kind of hardware motherboard design that just is based on the no south bridge control chip of Godson processor is on the Computer Design of main use and all-in-one formula.Be not have South Bridge chip and Super IO (super IOC) with the difference of traditional calculating machine is apparent in view.Thereby relatively with the integral computer of tradition band south bridge control chip, it can not through South Bridge chip accomplish with the IO bus line interface between communicate by letter the switching on and shutting down of completion total system and the operation that resets.And computing machine is under normal working condition; Only adopt the switching on and shutting down operation of hardware if realize the shutdown computing machine; This hardware mode can produce bigger surge current, and the switching on and shutting down of frequency operation is easy to damage the mainboard associated components in the short time, shortens the serviceable life of computing machine.Press for a kind of mode and solve this problem, the protection computing machine improves its serviceable life and maintenance cost.

Summary of the invention

Goal of the invention:, a kind of mainboard software shutdown resetting system and method are provided to the problems and shortcomings that exist in the prior art.Processor does not have south bridge and Super IO control chip shuts down and reset issues based on solving, thereby proposes to adopt independent EC (Embed Controller, embedded controller) control chip to carry out the software shutdown and reset.

Technical scheme: a kind of mainboard software shutdown resetting system comprises processor, the main electricity control chip on independent EC (Embed Controller, embedded controller) control chip and the hardware mainboard; Said processor sends the I2C signal for the processor of no south bridge hardware mainboard, said processor, and the I2C signal is outputed to the input end of EC chip; The output terminal of said EC chip connects the input end of said power supply control chip.

A kind of mainboard software shutdown repositioning method; Said closedown method is: at first processor sends the I2C signal that has the shutdown requirement and gives the EC chip, and after the EC chip was received shutdown command, the EC chip dragged down level SUSB_EN and SUSC_EN; Make each road NB637 power supply control chip enable signal invalid; The output of cutting off the electricity supply, shutdown system master chip power supply is accomplished software power-off operation process;

Said repositioning method is: processor sends the I2C signal that has the requirement that resets and gives the EC chip; The EC chip is received output system reset signal (SYSRESTn) behind the I2C signal that resets; Systematic reset signal (SYSRESTn) sends to equipment such as the processor that each road need reset; Clock generator and Ge Lu PCI equipment reset, and accomplish the system reset process.

Beneficial effect: compared with prior art; Mainboard software shutdown resetting system provided by the present invention and method are through carrying out the scheme of the software shutdown and the control and management that resets with independent EC (Embed Controller, embedded controller) control chip; Solved that processor does not have south bridge and Super IO control chip shuts down and reset issues; Prolong the life-span of homemade processor, and mainboard software shutdown resetting system is low in energy consumption; The power consumption that makes whole mainboard is less than 30 watts, and the CPU power consumption is especially less than 5 watts on the mainboard.

Description of drawings

Fig. 1 is the system framework figure of the embodiment of the invention;

Fig. 2 is the shutdown of the embodiment of the invention incorporate preferable facility circuit diagram that resets.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.

As shown in Figure 1: mainboard software shutdown resetting system comprises Godson CPU, EC (embedded Control) chip and source control chip; Godson CPU sends the I2C signal for the processor of no south bridge hardware mainboard, Godson CPU, and the I2C signal is outputed to the input end of EC chip; The output terminal of EC chip connects the input end of power supply control chip; The output terminal of power supply control chip connects PCI equipment.

Mainboard software closedown method: propose shutdown request by upper application software, after Godson CPU receives request, send I2C (twin wire universal serial bus) signal that has the shutdown requirement and give the EC chip; After EC (embedded Control) chip is received shutdown command, judge, drag down 1.8V according to the program that inside compiles in advance; 1.2V, 5V, the enable signal of 3.3V No. four primary power chips makes it invalid; Thereby cut off the electricity supply output, shutdown system master chip power supply is accomplished software power-off operation process.

Mainboard software reset method; Propose shutdown request by upper application software, after Godson CPU received request, Godson CPU sent the I2C signal that has the requirement that resets and gives the EC chip; The EC chip is exported SYSRESTn (systematic reset signal) after receiving the I2C signal that resets; SYSRESTn (systematic reset signal) sends to equipment such as the Godson CPU that each road need reset, and clock generator and Ge Lu PCI equipment reset, and accomplishes the system reset process.

As shown in Figure 2, be a kind of preferable effective facility circuit diagram.U1 is a kind of EC chip, and pin 1 provides the WV of EC chip.Pin 2-5 is one group 4 a bidirectional data transfers IO interface, draws on the inside.Pin 6-13 is one group 8 a bidirectional data transfers IO interface.To be grounding pins be connected with system GND network pin 14.

According to the mainboard demand each pin of figure chips being carried out network is defined as:

EC_VCC is the control chip WV; SUSB_EN is 1.8 power enable signal; SUSC_EN is the 1.2V/5V power enable signal; MCU_RST# is the reset signal of EC chip own, when system boot, provides; STR is 1.8V power supply control switching signal; SUSC_3.3VEN is the 3.3V power enable signal; SMB_SDA and SMB_SCL are one group of 8 I2C signal.SUMB_PG is a 1.8V power supply output feedback signal; 1.2V_PG be 1.2V power supply output feedback signal; CKE_CTRL is a clock control signal; SYSRESTn is a systematic reset signal.

Drop-down on the right-hand component among the figure is for a stable signal initial potential being provided, guaranteeing the original state that system does not power on.The element that has the NOPOP attribute is the not soldered elements on the system board, reserves debugging and uses.In system's normal course of operation, in the time of need carrying out the software power-off operation, to file a request from the upper layer application aspect, processor sends the SMB_SDA of band shutdown command and I2C (twin wire universal serial bus) signal of SMB_SCL is given the EC chip; After the EC chip is received signal, send low level SUSB_EN and SUSC_EN, make each road 1.8V; 1.2V, 5V, the enable signal of 3.3V power supply chip is invalid; From the face output of cutting off the electricity supply, shutdown system master chip power supply is accomplished software power-off operation process.

Claims

1. mainboard software shutdown resetting system is characterized in that: comprise processor, independent EC chip and the main electricity control chip on the hardware mainboard; Said processor sends the I2C signal for the processor of no south bridge hardware mainboard, said processor, and the I2C signal is outputed to the input end of EC chip; The output terminal of said EC chip connects the input end of said power supply control chip.

2. method that is used for the described mainboard software of claim 1 shutdown resetting system is characterized in that:

Said closedown method is: at first processor sends the I2C signal that has the shutdown requirement and gives the EC chip; After the EC chip was received shutdown command, the EC chip sent low level and gives each power supply control chip, dragged down the enable of each power supply control chip; Make each road power supply control chip enable signal invalid; Thereby the output of the power supply of the control chip of cutting off the electricity supply, shutdown system master chip power supply is accomplished the power-off operation process.

3. method that is used for the described mainboard software of claim 1 shutdown resetting system is characterized in that:

Said repositioning method is: processor sends the I2C signal have the requirement that resets and gives the EC chip, and the EC chip is received output system reset signal behind the I2C signal that resets, and systematic reset signal sends to the equipment that each road need reset and resets, and accomplishes the system reset process.

4. mainboard software shutdown repositioning method as claimed in claim 3, it is characterized in that: the equipment that said each road need reset is processor, clock generator and Ge Lu PCI equipment.