CN109901847A - A kind of volume production system firmware mass production method based on storage card - Google Patents
A kind of volume production system firmware mass production method based on storage card Download PDFInfo
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Abstract
The present invention relates to a kind of volume production system firmware mass production method based on storage card, belong to embedded system volume production field, it the described method comprises the following steps: searching by the Bootloader of firmware programming target and parse the volume production system data in storage card, the volume production system data is stored in the subregion guided step by step using customized EBT data structure；Guidance loads the volume production system data in each subregion step by step, and system firmware is guided to the programming to firmware programming realization of goal to system firmware step by step according to the index information of each subregion.This method supports the mode based on storage card by the storage medium of firmware programming to embedded device, saves hardware cost；Using self-defining data structure and subregion guidance load is carried out, reduces the coupling between application program；Using the mode guided step by step, gradually loading capacity stages of labor sequence can quickly load starting volume production program to execute complicated firmware volume production function, and reduce the space requirement to RAM.
Description
Technical field
The present invention relates to a kind of volume production system firmware mass production method based on storage card belongs to embedded system volume production neck
Domain.
Background technique
With universal and technology of Internet of things the development of consumer electronics product, all things on earth that internet of things product has is interconnected
Essence be widely used in it in fusion of network, the form of product also increasingly minimizes, simplify.Function increasingly intelligence
Energyization, price are also increasingly cheaper.
Electronic product enrich function be typically all pass through firmware (Firmware, the program being written in product storage medium,
The function and performance that decide hardware device be the soul of hardware device) it completes, chip design vendors are according to Chip scale
A variety of exterior storage mediums (Nand Flash, Nor Flash, eMMC etc.) are supported in definition, are voluntarily selected to be most suitable for certainly by client
The storage medium of own product function, while also supporting the firmware programming mode of various ways, it goes to select according to Product Definition by client
The one kind for being suitble to oneself is selected, by the operating system firmware programming of product into the medium of interiors of products.Products scheme manufacturer is drop
The cost of low BOM (Bill of Material bill of materials) table, removes the component outside product specification, and design as far as possible
On can also be avoided as far as possible using hardware with software realization.
At present in industry fields such as automotive electronics, unmanned plane, common monitorings, most of product does not use USB and is set
Communication connection between standby, but the modes such as WIFI, 4G is used to be communicated, audio, video data storage is carried out using SD/TF card,
Also become a basic product demand using the programming that the mode of card volume production (the volume production system based on storage card) carries out firmware,
The operation of firmware programming is completed without USB is used alone.Factory to these electronic products produce when, need by firmware with
Certain mode is written to storage card to be fabricated to volume production card, generally requires special fabrication tool software and carries out fabrication, assembly line
On worker by volume production card to product carry out firmware programming operation.Fabrication tool other than by firmware programming to volume production card,
It is also required to for volume production program being also written on volume production card, so stability and product that the data distribution of volume production card operates volume production
Volume production speed it is particularly important.
Volume production system needs based on storage card are mutually compatible with the activation system of electronic product, and there is no need to volumes for such product
Outer peripheral circuit and software operation, general chip interior can solidify one section of bootstrap to ROM (the Read Only of chip
Memory read-only memory), program curing executes simple guiding function, and the memory headroom of operation is also SRAM mostly
(Static Random Access Memory static random access memory), SRAM store the data and stack of ROM code,
Capacity also can be as small as possible due to cost considerations by SRAM, but volume production program may be bigger, and when load needs bigger
SRAM hardware could load success completely, if directly use DRAM, be loaded onto dram space, at this moment need to be solidificated in chip
Bootstrap execute DRAM initialization code, will lead to chip to DRAM compatibility it is poor.In this way in volume production program
It needs to store several bootstrap again before operation, operate on SRAM, after gradually initializing DRAM, just by volume production journey
In sequence guidance operation to DRAM, the data distribution of the volume production system based on storage card is also required to consider this demand of product
In order to meet above-mentioned product firmware programming demand in process of production, while solving there was only SD/TF external storage
Interface product firmware programming demand, and reduce paying for the hardware costs such as SRAM as far as possible, need to design a kind of base
In the firmware mass production method of storage card.
Summary of the invention
The present invention provides a kind of volume production system firmware mass production method based on storage card, using the process guided step by step, by
Loading capacity stages of labor sequence is walked, to execute complicated firmware volume production function.
Technical solution of the present invention first aspect is a kind of volume production system firmware mass production method based on storage card, the side
Method the following steps are included:
It is searched by the Bootloader of firmware programming target and parses the volume production system data in storage card, the amount
System data is produced to be stored in the subregion guided step by step using customized EBT data structure；
Guidance loads the volume production system data in each subregion step by step, according to the index information of each subregion by system firmware step by step
Guide the programming to firmware programming realization of goal to system firmware.
Further, described to search and parse the volume production system data in storage card, comprising: to be obtained from the address 0x0 of storage card
Taken amount produces the data structure information of system data, and the data structure information includes data header information and partition information；According to institute
State the volume production system data that data structure information parses each subregion in simultaneously load store card step by step.
Further, the volume production system for parsing each subregion in simultaneously load store card step by step according to the data structure information
Unite data before further include: confirmed according to the data header information and verify the volume production system data in currently stored card whether be
Effective EBT data.
Further, the data header information includes for determining the magic number of data type, for verifying data validity
Check code, the number of partitions for identifying number of partitions identify, for the data length mark and use of mark data head length
Make the placeholder of retaining space.
Further, the partition information includes partition name, subregion occupancy sector-size, subregion initial sector address, divides
Area's index, zone attribute, data occupied space length and not used retaining space in subregion.
Further, the subregion guided step by step includes:
Bootstrap subregion, for storing bootstrap, the bootstrap is for parsing EBT data and according to its index
Guidance load parameter subregion；
Parameter subregion, is used for storing initial parameter information, and the initiation parameter passes to bootstrap and held with calling
The corresponding initialization operation of row；
Volume production program sectioning, is used for amount of storage stages of labor sequence, and the volume production program is guided program designation load with the amount of execution
Produce operation；
Firmware partition, for storing volume production system firmware, the volume production system firmware is entered solid by the programming of volume production program designation
Part programming target.
Further, the volume production system for parsing each subregion in simultaneously load store card step by step according to the data structure information
Data are to search and load the data of each subregion step by step by subregion call number.
Technical solution of the present invention second aspect is a kind of computer installation, including memory, processor and being stored in is deposited
On reservoir and the computer program that can run on a processor, the processor realize such as above-mentioned first when executing described program
The method of aspect.
The technical solution of the present invention third aspect is a kind of computer readable storage medium, stores computer journey thereon
Sequence realizes the method such as above-mentioned first aspect when the computer program is executed by processor.
The invention has the benefit that the storage of firmware programming to embedded device is situated between by the mode based on storage card of support
In matter, it is no longer necessary to carry out firmware programming operation using other modes such as USB, save hardware cost；Use self-defining data
Structure and progress subregion guidance load, reduce the coupling between application program, improve the stability of volume production process；Using
Gradually loading capacity stages of labor sequence is dispersed in bootup process to execute complicated firmware volume production function to the mode guided step by step
It is run on multimedium, the speed of load starting volume production program can be accelerated, and reduce the space requirement to RAM.
Detailed description of the invention
Fig. 1 show basic flow chart according to the method for the present invention；
Fig. 2 show a kind of flow diagram of specific embodiment according to the method for the present invention；
Fig. 3 show the subregion schematic diagram of embodiment according to the present invention.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu, complete description, to be completely understood by the purpose of the present invention, scheme and effect.
It should be noted that unless otherwise specified, when a certain feature referred to as " fixation ", " connection " are in another feature,
It can directly fix, be connected to another feature, and can also fix, be connected to another feature indirectly.In addition, this
The descriptions such as the upper and lower, left and right used in open are only the mutual alignment pass relative to each component part of the disclosure in attached drawing
For system.The "an" of used singular, " described " and "the" are also intended to including most forms in the disclosure, are removed
Non- context clearly expresses other meaning.In addition, unless otherwise defined, all technical and scientific terms used herein
It is identical as the normally understood meaning of those skilled in the art.Term used in the description is intended merely to describe herein
Specific embodiment is not intended to be limiting of the invention.Term as used herein "and/or" includes one or more relevant
The arbitrary combination of listed item.Provided in this article any and all example or exemplary language (" such as ", " such as ")
Use be intended merely to that the embodiment of the present invention is better described, and unless the context requires otherwise, otherwise will not be to the scope of the present invention
Apply limitation.
Volume production system firmware mass production method based on storage card of the invention can be realized will be consolidated by way of storage card
Part programming into the storage medium of embedded device (Nor, Nand, EMMC), can solve the embedded product in only card slot
In, do not have to additional redesign USB interface and carry out firmware programming, reduces hardware cost.
With reference to Fig. 1, a kind of volume production system firmware mass production method based on storage card be the described method comprises the following steps:
S1, it is searched by the Bootloader of firmware programming target and parses the volume production system data in storage card, institute
Volume production system data is stated to be stored in the subregion guided step by step using customized EBT data structure；
S2, guidance loads the volume production system data in each subregion step by step, according to the index information of each subregion by system firmware
The programming to firmware programming realization of goal to system firmware is guided step by step.
Further, described to search and parse the volume production system data in storage card, comprising: to be obtained from the address 0x0 of storage card
Taken amount produces the data structure information of system data, and the data structure information includes data header information and partition information；According to institute
State the volume production system data that data structure information parses each subregion in simultaneously load store card step by step.
Wherein data header information is as shown in table 1, entitled EBT_header, and length is fixed as 32Byte, and function is used to mark
Know the information of entire EBT, including following information: magic evil spirit number is necessary for " EBTH "；The school of the entire EBT structure of check_code
Code is tested, the value that check_code participates in verification is defaulted as 0x12345678；Part_cnt indicates that EBT structure includes efficient zoned
Number；Head_size is the regular length 32Byte of EBT_header.
| Byte | Title | Meaning |
| 0~3 | magic | Magic number, it is necessary to be " EBTH " |
| 4~7 | check_code | Check code |
| 8~11 | part_cnt | All number of partitions in EBT |
| 12~27 | resv | Default 0 retains |
| 28~31 | header_size | Structure body length, it is necessary to be 32 |
Table 1
Wherein partition information is as shown in table 2, entitled boot_part, and each EBT data member is fixed as 64Byte, EBT
Thus data structure forms the element of the boot_parts array of structure, indicates the data type in EBT structure comprising subregion.Tool
Body includes following information: the name of part_name subregion, is no more than 16Byte, and part_size indicates the practical occupied space of subregion
The sector number of storage card, initial sector address (relative to entire storage card) of the part_start subregion in storage card, part_
Index subregion index, is started counting by 0, and bootstrap needs to know the subregion call number that oneself needs to scan.part_attr
Zone attribute, main comprising with properties:
PART_ATTR_APP: current partition storage is application program；
PART_ATTR_DATA: current partition storage is data, includes the information such as some parameters；
PART_ATTR_FW: current partition is to want the firmware of programming, is that volume production program needs to parse and execute programming operation
Firmware data；
Part_file_len indicates data actual length in subregion, as unit of Byte.
| Byte | Title | Meaning |
| 0~15 | part_name | Partition name, maximum 16byte |
| 16~19 | part_size | The sector-size that subregion occupies |
| 20~23 | part_start | The sevtor address of subregion starting |
| 24~27 | part_index | Index of the subregion in entire EBT |
| 28~31 | part_attr | Zone attribute |
| 32~39 | part_file_len | The byte number that data file occupies |
| 40~63 | resv | Retain |
Table 2
The present invention claims the target volume production systems of processing to meet the following conditions:
1) it needs the EBT data structure of the volume production system that can parse storage card to start after embedded product powers on to draw
Lead sequence (being currently the starting code being cured in ROM)；
2) it needs bootstrap or volume production program to record the part_index locating for oneself, and can voluntarily parse
EBT data structure；
3) volume production program can independently execute the parsing and programming operation of system firmware.
Substantially process of the invention is:
The data of volume production system are described on a memory card using customized EBT (Extend Boot Table) structure
Distribution, the relevant procedure, data of volume production and system firmware are stored in the way of subregion, EBT structure can be fast
Fast reliable index reads program and data in subregion, can quickly be loaded by the way of guiding step by step and start volume production journey
Sequence reduces the use of RAM and the coupling of intermodule, promotes the reliability of volume production system.
Volume production system based on storage card, relevant bootstrap, volume production procedure, data and system firmware all use
The mode of subregion is stored, and is managed using EBT data structure.After embedded chip product powers on, bootstrap parsing
EBT data structure (being executed by the starting code being cured in ROM) finds according to the part_index member of boot_part and wants
The boot_part subregion of load and execution, according to its part_start and part_file_len load specific binary program and
Code, loading procedure are carried out since part_index is 0 index, start multiple bootstrap step by step, until starting to solid
Part volume production program, bootstrap and volume production program itself are also required to parsing EBT data structure, so as to oneself execute next program or
Person parses firmware partition.After the starting of volume production program, the boot_ of firmware partition is searched according to part_index and part_attr
Then part removes verification firmware according to boot_part, and carries out firmware programming operation.
Subregion of the volume production system inside storage card is distributed as shown in figure 3, EBT data subregion is stored in the address 0x0, CPU
Solidifying bootstrap after powering on directly can read EBT data from the address 0x0 of storage card.Other than EBT data subregion, EBT number
It corresponds, specifically includes according to the distribution of the true subregion on the boot_part and storage card of structure:
Bootstrap subregion, for storing bootstrap, the bootstrap is for parsing EBT data and according to its index
Guidance load parameter subregion；
Parameter subregion, is used for storing initial parameter information, and the initiation parameter passes to bootstrap and held with calling
The corresponding initialization operation of row；
Volume production program sectioning, is used for amount of storage stages of labor sequence, and the volume production program is guided program designation load with the amount of execution
Produce operation；
Firmware partition, for storing volume production system firmware, the volume production system firmware is entered solid by the programming of volume production program designation
Part programming target；
Reserved partition, the subregion as retaining space, EBT data structure of the invention are not used.
Specific implementation of the invention is as shown in Figure 2:
After chip product powers on, the Bootloader starting being solidificated in ROM, Bootloader is from storage card
The address 0x0 obtains the information of EBT structure, first acquisition EBT_header information, is confirmed whether it is EBT structure by MAGIC
Then data determine efficient zoned quantity that current EBT data include according to the part_cnt member of EBT_header, further
The whole length for confirming current EBT data is 32+64*part_cnt, is then carried out using check_code to entire EBT structure
Verification, confirmation EBT structure it is legal effectively after, begin stepping through search part_index be 0 boot_part partitioned organization, according to
It is bootstrap booster that part_name, which obtains partition name, then according to the part_start of boot_part and part_
File_len bootload program booster, can verify booster program, then start booster.
After the starting of booster program, need to complete the major function of own module, initialization DRAM, GPIO etc., these letters
Breath is stored in parameter subregion, and booster program first looks for the boot_part partitioned organization that part_index is 1, is obtained and is divided
The entitled param in area, then according to part_start the and part_file_len parameter partition content of boot_part,
After booster obtains these parameters, the initialization operation such as DRAM parameter and GP configuring IO is executed.After ready, booster is looked into
Looking for part_index is 2 boot_part partitioned organization, and acquisition partition name is volume production program leaver, then according to boot_
Part_start the and part_file_len volume production program leaver partition content of part, while volume production program leaver is verified,
After verification passes through, simultaneously transportation load stages of labor sequence leaver is loaded.
After volume production program leaver starting, volume production operation is executed, Load Game picture etc. is needed to show volume production progress, in order to
The coupling of intermodule is reduced, these picture resources etc. can also be placed on parm parameter subregion, volume production program looks part_index
For 1 boot_part partitioned organization (referring to the above-mentioned acquisition to parameter), acquisition partition name is param, parses the figure of subregion
Piece resource.After volume production program is ready, the parsing operation to firmware is then carried out, first looking for part_index is 3
Boot_part partitioned organization, acquisition partition name is fw.pkg, then according to the part_start of boot_part and part_
The firmware partition file_len content, after verifying firmware, entirely the volume production System guides success based on storage card, volume production program start
Execute the volume production to firmware.
It should be appreciated that the embodiment of the present invention can be by computer hardware, the combination of hardware and software or by depositing
The computer instruction in non-transitory computer-readable memory is stored up to be effected or carried out.Standard volume can be used in the method
Journey technology-includes that the non-transitory computer-readable storage media configured with computer program is realized in computer program,
In configured in this way storage medium computer is operated in a manner of specific and is predefined --- according in a particular embodiment
The method and attached drawing of description.Each program can with the programming language of level process or object-oriented come realize with department of computer science
System communication.However, if desired, the program can be realized with compilation or machine language.Under any circumstance, which can be volume
The language translated or explained.In addition, the program can be run on the specific integrated circuit of programming for this purpose.
In addition, the operation of process described herein can be performed in any suitable order, unless herein in addition instruction or
Otherwise significantly with contradicted by context.Process described herein (or modification and/or combination thereof) can be held being configured with
It executes, and is can be used as jointly on the one or more processors under the control of one or more computer systems of row instruction
The code (for example, executable instruction, one or more computer program or one or more application) of execution, by hardware or its group
It closes to realize.The computer program includes the multiple instruction that can be performed by one or more processors.
Further, the method can be realized in being operably coupled to suitable any kind of computing platform, wrap
Include but be not limited to PC, mini-computer, main frame, work station, network or distributed computing environment, individual or integrated
Computer platform or communicated with charged particle tool or other imaging devices etc..Each aspect of the present invention can be to deposit
The machine readable code on non-transitory storage medium or equipment is stored up to realize no matter be moveable or be integrated to calculating
Platform, such as hard disk, optical reading and/or write-in storage medium, RAM, ROM, so that it can be read by programmable calculator, when
Storage medium or equipment can be used for configuration and operation computer to execute process described herein when being read by computer.This
Outside, machine readable code, or part thereof can be transmitted by wired or wireless network.When such media include combining microprocessor
Or other data processors realize steps described above instruction or program when, invention as described herein including these and other not
The non-transitory computer-readable storage media of same type.When the volume production system firmware according to the present invention based on storage card
When mass production method and technology program, the invention also includes computers itself.
Computer program can be applied to input data to execute function as described herein, to convert input data with life
At storing to the output data of nonvolatile memory.Output information can also be applied to one or more output equipments as shown
Device.In the preferred embodiment of the invention, the data of conversion indicate physics and tangible object, including the object generated on display
Reason and the particular visual of physical objects are described.
The above, only presently preferred embodiments of the present invention, the invention is not limited to above embodiment, as long as
It reaches technical effect of the invention with identical means, all within the spirits and principles of the present invention, any modification for being made,
Equivalent replacement, improvement etc., should be included within the scope of the present invention.Its technical solution within the scope of the present invention
And/or embodiment can have a variety of different modifications and variations.
Claims (9)
1. a kind of volume production system firmware mass production method based on storage card, which is characterized in that the described method comprises the following steps:
The volume production system data in storage card, the volume production system are searched and parsed by the Bootloader of firmware programming target
System data are stored in the subregion guided step by step using customized EBT data structure；
Guidance loads the volume production system data in each subregion step by step, is guided system firmware step by step according to the index information of each subregion
Programming to firmware programming realization of goal to system firmware.
2. the volume production system firmware mass production method according to claim 1 based on storage card, which is characterized in that the lookup
And parse the volume production system data in storage card, comprising:
The data structure information of volume production system data is obtained from the address 0x0 of storage card, the data structure information includes data
Head information and partition information；
Parse the volume production system data of each subregion in simultaneously load store card step by step according to the data structure information.
3. the volume production system firmware mass production method according to claim 2 based on storage card, which is characterized in that the root
It is parsed step by step according to the data structure information and in load store card before the volume production system data of each subregion further include:
Confirmed according to the data header information and verifies whether the volume production system data in currently stored card is effective EBT number
According to.
4. the volume production system firmware mass production method according to claim 2 based on storage card, it is characterised in that: the data
Head information includes for determining the magic number of data type, the check code for verifying data validity, for identifying number of partitions
Number of partitions mark, for the data length mark of mark data head length and placeholder as retaining space.
5. the volume production system firmware mass production method according to claim 2 based on storage card, it is characterised in that: the subregion
Information includes that partition name, subregion occupy sector-size, subregion initial sector address, subregion index, zone attribute, several in subregion
According to occupied space length and not used retaining space.
6. the volume production system firmware mass production method according to claim 1 based on storage card, which is characterized in that it is described step by step
The subregion of guidance includes:
Bootstrap subregion, for storing bootstrap, the bootstrap is for parsing EBT data and being guided according to its index
Load parameter subregion；
Parameter subregion, is used for storing initial parameter information, and the initiation parameter passes to bootstrap to call execution phase
The initialization operation answered；
Volume production program sectioning, is used for amount of storage stages of labor sequence, and the volume production program is guided program designation load to execute volume production behaviour
Make；
Firmware partition, for storing volume production system firmware, the volume production system firmware enters firmware by volume production program designation programming and burns
Write target.
7. the volume production system firmware mass production method according to claim 5 based on storage card, which is characterized in that the basis
The data structure information parse step by step and load store card in each subregion volume production system data be by subregion call number by
Grade searches and loads the data of each subregion.
8. a kind of computer installation, can run on a memory and on a processor including memory, processor and storage
Computer program, it is characterised in that: the processor realizes such as the described in any item sides of claim 1-7 when executing described program
Method.
9. a kind of computer readable storage medium, stores computer program thereon, it is characterised in that: the computer program quilt
Processor realizes the method according to claim 1 to 7 when executing.
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| CN111857882B (en) * | 2020-07-23 | 2024-04-02 | 深圳忆联信息系统有限公司 | Extensible SSD card opening firmware loading method and device, computer equipment and storage medium |
| WO2023277883A1 (en) * | 2021-06-29 | 2023-01-05 | Hewlett-Packard Development Company, L.P. | Production procedure device modifications |
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