CN208722090U

CN208722090U - Built-in terminal with the accurate configuration feature of memory parameters

Info

Publication number: CN208722090U
Application number: CN201821377890.8U
Authority: CN
Inventors: 李腾林生; 谢维勇; 陈焕洵
Original assignee: ZHANGZHOU LILLIPUT ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: ZHANGZHOU LILLIPUT ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2018-08-24
Filing date: 2018-08-24
Publication date: 2019-04-09
Anticipated expiration: 2028-08-24

Abstract

The utility model discloses the built-in terminal with the accurate configuration feature of memory parameters; it includes internal storage location, data-interface, non-volatile memory chip and CPU element; external computer accesses built-in terminal by data-interface; and verification and programming system code are carried out to internal storage location by data-interface; non-volatile memory chip includes a code memory block and memory parameters configuring area; memory parameters configuring area is for storing accurate memory configurations parameter, the upgrading protection that there is programming program can not do erasing operation to memory parameter configuration area for memory parameters configuring area；CPU element is connect with storage unit, internal storage location and data-interface respectively, and CPU element is used to be written system code code memory block, reads accurate memory configurations parameter initialization memory in startup stage and memory parameters configuring area is written in Memory Checkout result.The utility model carries out memory parameters before kernel starts and accurately configures, and avoids causing memory abnormal cannot be started up because of PCB quality consistency difference.

Description

Built-in terminal with the accurate configuration feature of memory parameters

Technical field

The utility model relates to the memory techniques fields of built-in terminal, more particularly to accurately configure function with memory parameters The built-in terminal of energy.

Background technique

With the continuous development of built-in terminal technology, the speed of memory is also constantly promoted at present, in this way to memory Timing requirements are just higher.High speed signal is high to the impedance matching requirements of PCB trace, but the quality of PCB is because of the manufacture work of manufacturer Artistic skill power height, the quality consistency of PCB is poor, and the integrality of high speed signal is made defect occur, this insertion to high speed signal is run The stability of formula system is a problem, crash is easy to appear, phenomena such as restarting.Existing technical method is to utilize Memory Checkout work Tool carries out Memory Checkout to built-in terminal system, and code is added in Memory Checkout result, embedded system is written after the completion of compiling System.Way if so, the volume production of built-in terminal, every loom all respectively compile an executable file.But have following several A defect: (1) due to embedded system, the code compilation used time such as Android, linux system is longer, generally at least wants half small When more than, so need a large amount of human costs, thus production can not each be compiled an executable file, then burn Record.Many uncertain factors are also brought along moreover, being compiled in process of production, workload is also big.(2) work as built-in terminal It is sold to client, system upgrade becomes impossible, because client can not execute Memory Checkout and code compilation.

Summary of the invention

The purpose of this utility model is to provide the built-in terminals for having the accurate configuration feature of memory parameters.

The technical solution adopted in the utility model is:

Built-in terminal with the accurate configuration feature of memory parameters comprising internal storage location, data-interface, non-volatile Storage chip and CPU element, external computer access built-in terminal by data-interface, and by data-interface to internal storage location Verification and programming system code are carried out, non-volatile memory chip includes a code memory block and memory parameters configuring area, interior Deposit parameter configuration area has programming program can not be to memory parameters for storing accurate memory configurations parameter, memory parameters configuring area Do the upgrading protection of erasing operation in configuring area；CPU element is connect with storage unit, internal storage location and data-interface respectively, and CPU is mono- Member is for being written code memory block for system code, reading accurate memory configurations parameter initialization memory in startup stage and will Memory parameters configuring area is written in Memory Checkout result；

Further, the non-volatile memory chip is eMMC chip.

Further, the accurate memory configurations parameter of memory parameters configuring area includes that read latency, write delay, synchronised clock prolong Late.

The utility model uses above technical scheme, 1, each built-in terminal of realization reality before system kernel starting Existing memory parameters accurately configure, and avoid cannot be started up because memory is caused to be operating abnormally for the influence of PCB quality consistency difference, and square Just production and mass production are imported.2, it disposably completes Memory Checkout and relevant memory parameters is stored in non-volatile memories core Piece makes client's upgrade-system not interfere with the memory parameters, realizes FTP client FTP upgrading after sale.

Detailed description of the invention

The utility model is described in further details below in conjunction with the drawings and specific embodiments；

Fig. 1 is the structural schematic diagram of built-in terminal of the utility model with the accurate configuration feature of memory parameters；

Fig. 2 is the non-volatile memory chip of built-in terminal of the utility model with the accurate configuration feature of memory parameters Data save subregion schematic diagram；

Fig. 3 is the Booting sequence schematic diagram of built-in terminal of the utility model with the accurate configuration feature of memory parameters.

Specific embodiment

As shown in one of Fig. 1-3, the utility model discloses have the accurate configuration feature of memory parameters built-in terminal, It includes internal storage location, data-interface, non-volatile memory chip and CPU element, and external computer is accessed embedding by data-interface Enter formula terminal, and verification is carried out to internal storage location by data-interface and programming system code, non-volatile memory chip include One code memory block and memory parameters configuring area, memory parameters configuring area is for storing accurate memory configurations parameter, memory ginseng The upgrading protection that there is programming program erasing operation can not be done to memory parameter configuration area for number configuring area；CPU element respectively with deposit Storage unit, internal storage location and data-interface connection, CPU element were used to that code memory block to be written system code into, in startup stage It reads accurate memory configurations parameter initialization memory and memory parameters configuring area is written into Memory Checkout result；

The non-volatile memory chip is eMMC chip.

The accurate memory configurations parameter of memory parameters configuring area includes read latency, write delay, synchronised clock delay.

It is below exactly the concrete operating principle of the utility model

The CPU element first reads the data of the memory parameters configuring area, to memory when starting is to internal memory initialization Parameter is accurately configured.

Further, program upgrading protection processing, i.e. programming program are done to the accurate memory configurations parameter region of EMMC When, erasing operation is not done to the region, the accurate memory configurations parameter in the region can be made to remain unchanged, then the number verified As long as upgrade procedure will not influence accurate memory configurations parameter, facilitate the system program of client according to saving once Upgrading.

After the system program programming of embedded system is completed, system is set to enter order terminal pattern, by the essence of EMMC Quasi- memory configurations parameter is stored in customized particular address region.The acquisition of accurate memory parameters be by with CPU phase used What the Memory Checkout tool matched was realized, it is the prior art, is not described in detail.

By taking Android system as an example, the start-up course of system includes:

1, the information for being similar to BIOS is read after CPU first is powered on from piece ROM, basic hardware configuration is initialized, opens Begin to start；

2, boot loader is executed, is loaded into the operation of DDR memory, initialization from external memory eMMC by system code Environmental parameter configuration etc.；It is different from existing procedure, the utility model further reads the particular address being stored on eMMC i.e. The accurate memory configurations parameter of memory parameters configuring area, and imported into the related register of CPU, keep the parameter of DDR again first Beginningization.

3, operating system kernel and associated drives；

4, application program is run.

Similarly, the systems such as linux and WINCE can also use similar approach.

The utility model uses above technical scheme, it is contemplated that the line quality of every a piece of PCB is irregular to be may cause High speed signal is unable to satisfy signal integrity requirement, overcomes product defects using corresponding technological means.

The utility model on non-volatile memory chip by opening up memory configurations parameter region for storing accurate memory Configuration parameter, and protection processing is carried out for programming program to the region.So that built-in terminal can be in the boot of starting The loader stage directly reads accurate memory configurations parameter and does secondary configuration to the memory related register of CPU, this precisely in Deposit the parameters such as read latency, write delay that configuration parameter includes storage and nonvolatile memory, synchronised clock delay, a memory Parameter verification can, every subsystem starting with system carry boot loader load accurate memory configurations parameter automatically, Complete CPU register configuration, and the configuration of register be system complete starting before, can anti-locking system prevent because The parameters such as the impedance of memory high speed signal cabling of PCB and the parameter configuration of register mismatch lead to system crash and can not open Machine.Because CPU is when executing boot loader, it is few to expend hardware resource, clock frequency default be it is relatively low, be the equal of Signal speed is relatively slow, lower to the line quality requirement of PCB, also not easily leads to code operation and breaks down.It reads at this time It takes accurate memory configurations parameter to carry out reconfiguring for memory parameters, will not be mismatched because of signal speed and PCB line quality And system is caused to cannot be started up.

Claims

1. having the built-in terminal of the accurate configuration feature of memory parameters, it is characterised in that: it includes that internal storage location, data connect Mouth, non-volatile memory chip and CPU element, external computer accesses built-in terminal by data-interface, and is connect by data Mouth carries out verification and programming system code to internal storage location, and non-volatile memory chip includes that a code memory block and memory are joined Number configuring areas, memory parameters configuring area for storing accurate memory configurations parameter, memory parameters configuring area have programming program without The upgrading that method does erasing operation to memory parameter configuration area is protected；CPU element connects with storage unit, internal storage location and data respectively Mouth connection, CPU element are used to read accurate memory configurations parameter by system code write-in code memory block, in startup stage initial Change memory and memory parameters configuring area is written into Memory Checkout result.

2. the built-in terminal according to claim 1 with the accurate configuration feature of memory parameters, it is characterised in that: described Non-volatile memory chip is eMMC chip.

3. the built-in terminal according to claim 1 with the accurate configuration feature of memory parameters, it is characterised in that: memory The accurate memory configurations parameter in parameter configuration area includes read latency, write delay, synchronised clock delay.