CN102819441B - A kind of Vxworks system quick start method based on MPC5200B - Google Patents
A kind of Vxworks system quick start method based on MPC5200B Download PDFInfo
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- CN102819441B CN102819441B CN201210259368.0A CN201210259368A CN102819441B CN 102819441 B CN102819441 B CN 102819441B CN 201210259368 A CN201210259368 A CN 201210259368A CN 102819441 B CN102819441 B CN 102819441B
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Abstract
Based on a Vxworks system quick start method of MPC5200B, comprise the steps: to adopt BAT mode to map 4GB address space, adopt Block Address Translation method to map bulk memory; According to system configuration, PHY is configured to system interface according to during system electrification, allows system dynamic self-adapting simultaneously; Optimization of registers is selected to configure according to the concrete Flash performance used to sheet; Adopt the mode of Virtual File System, the VxWorks binary file directly in mapping flash is that the mode of file system loads VxWorks.By the application of correlation technique, MPC5200B processor loads vxworks operating system to arrive system from power on and start and enter application program and be compressed to 1.6 seconds by original 35 seconds, and after using this configuration, user does not worry that the damage of file system causes system to start, and drastically increases the reliability of system.
Description
Technical field:
The invention belongs to embedded system field, be specifically related to a kind of quick start method based on MPC5200B processor computer.
Background technology:
Embedded system VxWorks based on MPC5200B processor is generally tens second time, even more than one minute start-up time, cannot meet the requirement powering on and start fast in some application scenario.Computer system based on PowerPC processor cannot be used in quick startup field and use other process such as DSP instead, or simply not using operating system.The current toggle speed based on PowerPC system is all more than tens seconds.Namely the system allowing to start in several seconds is also only be loaded with core system, and cannot load whole system component and application program.
In order to need the application scenario started fast to use high performance PowerPC processor and vxworks operating system at some, the quick startup within 2 seconds must be realized, Given this demand is planted, analyse in depth PowerPC architecture and VxWorks system to start and associated component loading principle, achieve the system requirements started fast for 2 seconds.
Summary of the invention:
For above-mentioned defect or deficiency, the object of the invention is to propose a kind of novel Vxworks system quick start method based on MPC5200B.
Specific as follows:
Comprise the steps:
1) adopt BAT mode to map 4GB address space, adopt Block Address Translation method to map bulk memory;
2) according to system configuration, PHY is configured to system interface according to during system electrification, allows system dynamic self-adapting simultaneously;
3) optimization of registers is selected to configure according to the concrete Flash performance used to sheet;
4) adopt the mode of Virtual File System, the VxWorks binary file directly in mapping flash is that the mode of file system loads VxWorks.
Further, described register distribute the configuration comprising WaitP and WaitX and WTyp rationally.
The invention has the beneficial effects as follows:
By the application of correlation technique, MPC5200B processor loads vxworks operating system to arrive system from power on and start and enter application program and be compressed to 1.6 seconds by original 35 seconds, and after using this configuration, user does not worry that the damage of file system causes system to start, and drastically increases the reliability of system.
Accompanying drawing illustrates:
Fig. 1 is quick Booting sequence figure.
Fig. 2 is master control borad theory diagram of the present invention.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail.
The present invention mainly comprises following several contents:
A.4GB the improvement of the mapping method of address space.General method is from mapping mode in employing table page, mapping process complicated and time consumption, be directly proportional with memory size, and adopt BAT mode, greatly can reduce mapping time, improve toggle speed, bulk memory adopts Block Address Translation method, greatly can improve toggle speed.
By the BAT function using PowerPC process to support, bulk memory maps and uses BAT mode, and code sample is as follows:
B. the performance optimization of Ethernet drive load, common Ethernet uses auto-negotiation mode, will through a series of negotiation work when extraneous Ethernet connects invalid, time is long, so PHY is configured to fixed interface according to system configuration during system electrification, allow system dynamic self-adapting simultaneously, accelerate toggle speed;
Distributing rationally of C.Flash sheet choosing.
Select optimization of registers to configure according to the concrete performance of Flash that uses to sheet, mainly distribute WaitP and WaitX and WTyp rationally.Improve the read or write speed of read-write flash, shown in register-bit is defined as follows:
Figure mono-FLASH sheet selects register
D.VxWorks is loaded and optimized
Optimize bootloader, adopt the mode of Virtual File System, the VxWorks binary file directly in mapping flash file is that the mode of system loads VxWorks image file, removes the repetition copied content cost time from, improves toggle speed.
Vxworks starts and application program loading process flow diagram is shown in accompanying drawing.
Claims (1)
1., based on a Vxworks system quick start method of MPC5200B, it is characterized in that, comprise the steps:
1) adopt BAT mode to map 4GB address space, adopt Block Address Translation method to map bulk memory;
2) according to system configuration, PHY is configured to system interface when system electrification, allows system dynamic self-adapting simultaneously;
3) optimization of registers is selected to configure according to the concrete Flash performance used to sheet; Distribute the configuration comprising WaitP and WaitX and WTyp rationally;
4) adopt the mode of Virtual File System, the VxWorks binary file directly in mapping Flash is that the mode of file system loads VxWorks image file, removes the repetition copied content cost time from, improves toggle speed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210259368.0A CN102819441B (en) | 2012-07-25 | 2012-07-25 | A kind of Vxworks system quick start method based on MPC5200B |
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| CN201210259368.0A CN102819441B (en) | 2012-07-25 | 2012-07-25 | A kind of Vxworks system quick start method based on MPC5200B |
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| CN102819441A CN102819441A (en) | 2012-12-12 |
| CN102819441B true CN102819441B (en) | 2015-08-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406909A (en) * | 2016-10-14 | 2017-02-15 | 重庆金美通信有限责任公司 | Method for optimizing VxWorks startup process by using ARJ compressed file |
| US11349780B2 (en) * | 2020-09-03 | 2022-05-31 | Mellanox Technologies, Ltd. | Enhancing port link-up time |
| CN112486580A (en) * | 2020-12-01 | 2021-03-12 | 中国船舶重工集团公司第七一六研究所 | Method and device for realizing quick start of VxWorks operating system |
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2012
- 2012-07-25 CN CN201210259368.0A patent/CN102819441B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 嵌入式操作系统VxWorks中TFFS文件系统的构建;liubogx;《http://wenku.baidu.com/view/8c90f74669eae009581bec9b.html》;20110118;第1-7页 * |
| 缩短vxworks启动时间的方法;maomaotr;《http://forum.eepw.com.cn/thread/107781/1》;20070425;第1-4页 * |
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| CN102819441A (en) | 2012-12-12 |
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