WO2013149561A1

WO2013149561A1 - Method and device for quick initialization of chip

Info

Publication number: WO2013149561A1
Application number: PCT/CN2013/073367
Authority: WO
Inventors: 姜海明; 刘建成; 张宝亚
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-04-06
Filing date: 2013-03-28
Publication date: 2013-10-10
Also published as: CN102662711B; CN102662711A

Abstract

Disclosed are a method and a device for quick initialization of a chip. The method comprises: activating a quick start mode; reading an XML configuration file, the XML configuration file recording an adaptation parameter of a to-be-adapted interface of a chip; and performing quick initialization for the chip according to the XML configuration file. The present invention utilizes the special characteristics of the XML to save an optimal parameter (adaptation parameter) of the to-be-adapted interface of the chip. In the initialization process, a user may freely select to enter a normal start mode or a quick start mode. During the normal start mode, each to-be-adapted interface of the chip is trained to acquire an adaptation parameter thereof. During the quick start mode, a preset XML configuration file is directly read, and an XML parsing and initialization module reads an XML configuration parameter directly and writes the same into a chip register. By means of the present invention, the initialization time for a chip can be significantly reduced.

Description

Chip rapid initialization method and device

The present invention relates to the field of communications, and in particular to a method and apparatus for rapidly initializing a chip. BACKGROUND At present, the development speed of the network is staggering, the growth of network traffic and the emergence of new services require network equipment to have wire speed and fast and flexible processing capability. Therefore, Application Specific Integrated Circuits (ASIC) chips and Network Processors (NPs) have become two popular chip selection solutions in today's network equipment products. In the actual application process, whether it is ASIC or NP, it needs to initialize the interface to be adapted during the initialization process, such as SRAM (Static RAM), Ternary Content Addressable Memory (TCAM), synchronous cloud. Synchronous Dynamic Random Access Memory (SDRAM), which stores various service entries, such as port tables, MAC tables, and routing tables. At present, IPTN's high-end products and Internet Data Center (IDC) put forward very high requirements on network bandwidth. The requirements for the forwarding rate of network chips are also moving toward the 100G target. Under this circumstance, in addition to the increase in the processing rate of the network chip, extremely high requirements are imposed on the bandwidth, timing, and the like of the external interface. Therefore, the current 100G forwarding chip adds the parameter optimization process of the interface to be adapted during the initialization process. These interface parameters include the timing, phase, frequency, etc. of the interfaces. These parameters are different for different boards. For such chips, the training step for external TCAM, SRAM, and SDRAM is added during the initialization process. In this process, the interface timing is adjusted by repeated reading and writing of the external memory. Get the optimal interface parameters. However, for such an actual chip, it usually has multiple external interfaces. For example, there may be at least one TCAM interface, three SRAM interfaces, and six SDRAM interfaces. Training on these interfaces (Training) In the processing steps, the training time may add up to several minutes, and such a long initialization time is not tolerable for high-speed network equipment. Therefore, a processing method that can quickly initialize the chip is extremely necessary. SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for rapidly initializing a chip by reading an extensible markup language (XML) stored in a memory device (for example, FLASH) that is not lost in power-down content. The configuration file can be used to obtain the adaptation parameters based on the individual boards, so that the chip can be quickly initialized. According to an aspect of the present invention, a fast method for initializing a chip is provided, including: activating a quick start mode; reading an XML configuration file, wherein the XML configuration file records an adaptation parameter of an interface to be adapted by the chip; The XML configuration file is used to perform rapid initialization of the chip. The adaptation parameters include timing, phase, and frequency of the interface to be adapted by the chip. The step of performing fast initialization of the chip according to the XML configuration file includes: parsing the XML configuration file; writing the analysis result to the chip register; and performing fast initialization of the chip according to the analysis result stored in the chip register. Before performing all the steps, the chip fast initialization method further includes: activating a normal startup mode; training the chip to be adapted interface and obtaining an adaptation parameter thereof; and writing the adaptation parameter into an XML configuration file. The XML configuration file is stored in the memory device where the power-down content is not lost. According to another aspect of the present invention, a chip fast initialization apparatus is provided, including: a mode selection module configured to activate a quick start mode; a configuration parameter reading module configured to read an XML configuration file, wherein the XML configuration The file records the adaptation parameters of the interface to be adapted by the chip; the parsing and initialization module is configured to perform fast initialization of the chip according to the XML configuration file. The adaptation parameters include timing, phase, and frequency of the interface to be adapted by the chip. The parsing and initializing module is configured to perform fast initialization of the chip according to the XML configuration file, including: parsing the XML configuration file; writing the parsing result to a chip register; storing according to the chip register The analysis results are performed for rapid initialization of the chip. The mode selection module is further configured to activate a normal startup mode, and the chip fast initialization device further includes: a training module, configured to train the chip to be adapted interface and obtain an adaptation parameter thereof; and write the parameter module, set to be The adaptation parameter is written to the XML configuration file; the storage module is configured to store the XML configuration file. The storage module is not easy to lose the storage device for the power-down content. By using the XML-specific features, the optimal parameters (adaptive parameters) of the interface to be adapted by the chip are saved. The initialization process allows the user to flexibly choose to enter the normal startup mode or the quick startup mode. During the normal startup mode, the chip to be adapted interface is trained one by one to obtain its adaptation parameters; when the fast startup mode is performed, the preset XML configuration file is directly read, and is read by the XML parsing and initialization module. The XML configuration parameters are directly written into the chip registers. With the present invention, the initialization time of the chips can be greatly reduced. 1 is a schematic flowchart of a method for rapidly initializing a chip according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of a method for rapidly initializing a chip according to an XML configuration file according to an embodiment of the present invention; FIG. 4 is a schematic diagram of a chip fast initialization device according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a preferred chip fast initialization device according to an embodiment of the present invention. The technical solutions of the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can understand the present invention and can be practiced, but the embodiments are not Limitation of the invention. The embodiment of the present invention provides a method for rapidly initializing a chip. In actual applications, the parameters of each board are different, but the parameters of the same board are determined. Therefore, the selected adaptation parameters can be saved to the XML configuration file during the first initialization process. At the time of product release, the XML configuration file is stored in FLASH, SD card, etc. The power-down content is not easily lost in the storage device, and the XML configuration file is directly read during chip initialization, skipping the lengthy parameter selection process and achieving rapid The purpose of the initialization. 1 is a schematic flowchart of a method for rapidly initializing a chip according to an embodiment of the present invention. As shown in FIG. 1 , a method for quickly initializing a chip according to an embodiment of the present invention includes: Step S101: Activating a quick start mode; Step S102: Reading an XML a configuration file, where the XML configuration file records an adaptation parameter of the interface to be adapted by the chip; for example, the interface to be adapted of the chip may be an external memory interface of the chip, and It is not difficult to be understood by those skilled in the art that the above-mentioned chip to be adapted interface may also be other parameters that depend on individual boards. Step S103: Perform fast initialization of the chip according to the read XML configuration file. In the above step S102, the adaptation parameter may include the timing, phase, and frequency of the interface to be adapted by the chip. 2 is a schematic flowchart of performing fast initialization of a chip according to an XML configuration file according to an embodiment of the present invention. As shown in FIG. 2, in the foregoing step S103, the step of performing fast initialization of the chip according to the XML configuration file includes:

S1031, parsing the foregoing XML configuration file;

S1032, the analysis result is written into the chip register; S1033, the chip is quickly initialized according to the analysis result stored in the chip register. The parsing result is an adaptation parameter of the interface to be adapted by the chip. Among them, there are many methods for parsing XML files in the technical field, and the actual steps will not be described in detail herein. FIG. 3 is a schematic flowchart of a method for quickly initializing a chip according to an embodiment of the present invention. As shown in FIG. 3, in the preferred embodiment, before performing all the steps, the method for quickly initializing the chip further includes:

S00K activates the normal startup mode;

5002. Train the interface to be adapted by the chip and obtain an adaptation parameter thereof;

5003. Write the obtained adaptation parameters into an XML configuration file. In the preferred implementation manner, the XML configuration file is stored in the storage device that is not easily lost in the power-down content. Among them, XML is widely used as a form of cross-platform interaction data, mainly for the content of data, through the different formatting description means (XSLT, CSS, etc.) can complete the final form expression, generate corresponding HTML, PDF or Other file formats.

XML defines structure, stores information, and transmits information. For example, the storage format of two parameters named ParamA, ParamB, and values 0x1000, 0x2000 is as follows:

< parameter—section > < parameter name TaramA">0xl000</ parameter >

< parameter name=,TaramB,, >0x2000</ parameter >

</ 。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。 The quick initialization device includes: a mode selection module 10, configured to activate a quick start mode; a configuration parameter reading module 20 connected to the mode selection module 10, configured to read an XML configuration file, wherein the XML configuration file records the chip The adaptation parameter of the interface to be adapted, in the specific operation, it is used for repeatedly reading and writing the interface to be adapted, so as to select an optimal parameter, wherein the adaptation parameter includes the timing and phase of the interface to be adapted by the chip. , frequency. The parsing and initialization module 30 is connected to the configuration parameter reading module 20, and is configured to perform fast initialization of the chip according to the XML configuration file. The step of the parsing and initializing module 30 for rapidly initializing the chip according to the XML configuration file includes:

(1) parsing the XML configuration file;

(2) Write the analysis result to the chip register;

(3) Perform fast initialization of the chip according to the parsing result stored in the chip register, wherein the parsing result is an adaptation parameter of the interface to be adapted by the chip. FIG. 5 is a schematic diagram of a preferred chip fast initialization device according to an embodiment of the present invention. As shown in FIG. 5, the preferred chip fast initialization device includes: a training module 40 and a write parameter module 50, in addition to all the modules in FIG. And the storage module 60, the preferred device will be described below. Preferably, the mode selection module 10 is further configured to activate the normal startup mode, and the training module 40 included in the chip fast initialization device is connected to the mode selection module 10, and is configured to train the chip to be adapted and obtain the appropriate a parameter; a parameter module 50, connected to the training module 40, configured to adapt the above The parameter is written to the XML configuration file; the storage module 60 is connected to the write parameter module 50 and the configuration parameter reading module 20, and is configured to store the XML configuration file. Preferably, the storage module 60 is not easy to lose the storage device for the power-down content. In an embodiment of the present invention, the chip provides a normal startup mode provided by the device, and the workflow is - step 201, start; step 202, the interface to be adapted, read and write repeatedly -> modify parameters -> The process of reading and writing until adaptation parameters such as optimal timing are adapted. This step is the most critical part of the interface training to be adapted. For example, the external DDR SRAM interface is very demanding on timing requirements. Improper parameter selection will seriously affect the interface read/write performance, thus affecting the forwarding performance of the network chip. Step 203: Steps The adaptation parameters adapted to 202 are written into the XML configuration file and saved to the hardware flash firmware; Step 204, transferred to the quick start mode, and the XML configuration file storing the optimal adaptation parameters is directly read from the hardware flash firmware. Step 206: Invoke the XML parser to parse the XML configuration file, and obtain the adaptation parameter of the interface to be adapted; Step 207: Write the obtained adaptation parameter into the chip register; Step 208: The process ends. The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

Claim

A method for quickly initializing a chip, comprising:

Activate the quick start mode;

Reading an XML configuration file, where the XML configuration file records an adaptation parameter of an interface to be adapted by the chip;

The chip is quickly initialized according to the XML configuration file.

2. The chip fast initialization method according to claim 1, wherein the adaptation parameter comprises a timing, a phase, and a frequency of a chip to be adapted.

3. The chip fast initialization method according to claim 1, wherein the step of performing fast initialization of the chip according to the XML configuration file comprises:

Parsing the XML configuration file; writing the parsing result to a chip register;

The fast initialization of the chip is performed according to the analysis result stored in the chip register.

4. The chip fast initialization method according to claim 1, wherein, before performing all the steps, further comprising: activating a normal startup mode;

Training the chip to be adapted interface and obtaining its adaptation parameters;

The adaptation parameters are written to an XML configuration file.

5. The chip fast initialization method according to claim 1, wherein the XML configuration file is stored in a memory device in which the power-down content is not lost.

6. A chip rapid initialization device, comprising: a mode selection module, configured to activate a quick start mode;

The configuration parameter reading module is configured to read an XML configuration file, wherein the XML configuration file records an adaptation parameter of the interface to be adapted by the chip; and the parsing and initialization module is configured to perform the chip fast according to the XML configuration file. initialization.

7. The chip fast initialization device according to claim 6, wherein the adaptation parameter comprises a chip to be adapted Timing, phase, and frequency of the interface.

8. The chip fast initialization device according to claim 6, wherein the parsing and initializing module is configured to perform fast initialization of the chip according to the XML configuration file, comprising: parsing the XML configuration file; The parsing result is written into the chip register; the chip is quickly initialized according to the parsing result stored in the chip register.

The chip fast initialization device according to claim 6, wherein the mode selection module is further configured to activate a normal startup mode, and the chip fast initialization device further includes:

a training module, configured to train the chip to be adapted interface and obtain an adaptation parameter thereof; the write parameter module is configured to write the adaptation parameter into the XML configuration file;

A storage module, configured to store the XML configuration file.

10. The chip fast initialization device according to claim 9, wherein the memory module is a memory device that is not volatile.