CN106155961A - Pass the method and device of parameter to kernel based on BootLoader - Google Patents
Pass the method and device of parameter to kernel based on BootLoader Download PDFInfo
- Publication number
- CN106155961A CN106155961A CN201610598689.1A CN201610598689A CN106155961A CN 106155961 A CN106155961 A CN 106155961A CN 201610598689 A CN201610598689 A CN 201610598689A CN 106155961 A CN106155961 A CN 106155961A
- Authority
- CN
- China
- Prior art keywords
- physical memory
- operating system
- hardware parameter
- crc check
- memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
Abstract
The application provides a kind of method and device passing parameter based on BootLoader to kernel, and described method includes: the hardware parameter that needs transmit is stored in appointment physical memory by BootLoader, and the address information of described physical memory is sent to operating system；Wherein, the length of described physical memory is less than the length threshold preset, and described length threshold characterizes the maximum of the hardware parameter quantity of single transmission；Operating system based on the described address information received, described physical memory is limited to non-can committed memory；Operating system reads the described hardware parameter stored in described physical memory and performs startup, and sets up the physical address of described physical memory and the mapping relations of the logical address in operating system logical address space.The application embodiment of the present invention, owing to improve the quantity of BootLoader transmission hardware parameter, decreases the operating system access times to hardware chip, thus improves the speed that embedded device starts and runs.
Description
Technical field
The application relates to computer communication field, particularly relates to pass to kernel method and the dress of parameter based on BootLoader
Put.
Background technology
In embedded systems, BootLoader (start-up loading device) is that a section run during device power starts draws
Helical pitch sequence, is mainly used in initiating hardware equipment, transmits hardware parameter to kernel and sets up the space mapping etc. of internal memory.Especially
It is that BootLoader plays vital effect to the efficiency of kernel transmission hardware parameter to the toggle speed of embedded device.
But, in the operating system initialization stage, BootLoader transmission hardware parameter is limited in one's ability, and in operation system
System run duration, when operating system needs the same hardware parameter that BootLoader transmission is used for multiple times, then needs frequently to visit
Ask hardware chip, from this chip, read hardware parameter, thus reduce the speed that embedded device starts and runs.
Summary of the invention
In view of this, the application provides a kind of method and device passing parameter based on BootLoader to kernel, in order to carry
The speed that high embedded device starts and runs.
First aspect according to embodiments of the present invention, it is provided that a kind of method passing parameter to kernel based on BootLoader,
Described method is applied to embedded device, including:
The hardware parameter needing transmission is stored in appointment physical memory by BootLoader, and by described physical memory
Address information is sent to operating system；Wherein, the length of described physical memory is less than the length threshold preset, described length threshold
Value characterizes the maximum of the hardware parameter quantity of single transmission；
Operating system based on the described address information received, described physical memory is limited to non-can committed memory；
Operating system reads the described hardware parameter stored in described physical memory and performs startup, and sets up in described physics
The mapping relations of the logical address in the physical address deposited and operating system logical address space.
Second aspect according to embodiments of the present invention, it is provided that a kind of device passing parameter based on BootLoader to kernel,
Described device includes:
Transmitting element, is stored in the hardware parameter needing transmission in appointment physical memory for BootLoader, and will
The address information of described physical memory is sent to operating system；Wherein, the length of described physical memory is less than the length preset
Threshold value, described length threshold characterizes the maximum of the hardware parameter quantity of single transmission；
Limiting unit, for operating system based on the described address information received, is limited to non-by described physical memory
Can committed memory；
Creating unit, reads, for operating system, the described hardware parameter stored in described physical memory and performs startup, and
Set up the physical address of described physical memory and the mapping relations of the logical address in operating system logical address space.
The embodiment of the present invention proposes a kind of new method passing parameter to kernel based on BootLoader.By to based on
BootLoader passes the improvement of parameter mechanism, and the hardware parameter needing transmission can be stored in appointment physics by BootLoader
In depositing, it is possible to the address information of described physical memory is sent to operating system, the length of this physical memory is less than presetting
Length threshold institute, and this length threshold characterizes the maximum of hardware parameter size of single transmission.Operating system can be with base
In the described address information received, described physical memory is limited to non-can committed memory, and described physics can be read
The described hardware parameter stored in internal memory performs startup, and sets up the physical address of described physical memory with operating system logically
The mapping relations of the logical address in space, location.
On the one hand, before os starting, owing to the length of physical memory is by traditional regular length, change into length
Less than the length threshold preset, length threshold characterizes the maximum of the hardware parameter quantity of single transmission, therefore can be effective
Ground expands the quantity of transmission hardware parameter, improves the startup speed of operating system.
On the other hand, due to operating system this physical memory is limited to non-can committed memory, when after os starting,
This physical memory will not be occupied, and the hardware parameter stored in physical memory is safeguarded.When operating system needs to be used for multiple times
During this hardware parameter, can be obtained by this physical memory, without reading from hardware continually.This improves embedding
Enter the operating rate of formula equipment.
Based on above-mentioned both sides reason, the method using the embodiment of the present invention to provide can improve embedded device and start
With the speed run.
Accompanying drawing explanation
Fig. 1 is a kind of relevant skill passing parameter based on BootLoader to kernel shown in the application one exemplary embodiment
The flow chart of art scheme；
Fig. 2 is a kind of method passing parameter to kernel based on BootLoader shown in the application one exemplary embodiment
Flow chart；
Fig. 3 is the method that the another kind shown in the application one exemplary embodiment passes parameter based on BootLoader to kernel
Flow chart；
Fig. 4 is a kind of device institute passing parameter based on BootLoader to kernel shown in the application one exemplary embodiment
A kind of hardware structure diagram at equipment；
Fig. 5 is a kind of device passing parameter based on BootLoader to kernel shown in the application one exemplary embodiment
Block diagram.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Explained below relates to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they are only with the most appended
The example of the apparatus and method that some aspects that described in detail in claims, the application are consistent.
It is only merely for describing the purpose of specific embodiment at term used in this application, and is not intended to be limiting the application.
" a kind of ", " described " and " being somebody's turn to do " of singulative used in the application and appended claims is also intended to include majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wraps
Any or all containing one or more projects of listing being associated may combination.
Although should be appreciated that in the application possible employing term first, second, third, etc. to describe various information, but this
A little information should not necessarily be limited by these terms.These terms are only used for same type of information is distinguished from each other out.Such as, without departing from
In the case of the application scope, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depend on linguistic context, word as used in this " if " can be construed to " ... time " or " when ...
Time " or " in response to determining ".
Seeing Fig. 1, Fig. 1 is that the one shown in the application one exemplary embodiment is hard to kernel transmission based on BootLoader
The flow chart of the related art scheme of part parameter.
In embedded device, BootLoader is one section of bootstrap before os starting.It is similar to PC
Bootstrap loader BIOS.
After embedded device starts, at operating system nucleus initial phase, BootLoader can be in operating system
Core transmits hardware parameter, initiating hardware equipment and sets up the space mapping graph etc. of internal memory.Especially, BootLoader is to behaviour
Make the quantity of system kernel transmission hardware parameter, determine the toggle speed of embedded device.BootLoader is to operating system
The quantity of kernel transmission hardware parameter is the most, the quantity of the hardware parameter that operating system and other application programs can directly use
The most, the toggle speed of embedded device is the fastest.
Transmitting in the mechanism of hardware parameter to kernel based on BootLoader relevant, BootLoader can be by needs
The hardware parameter of transmission is saved in one section of fixing physical memory, it is possible to by the start physical address of this section of physical memory and
Length is sent to operating system.Operating system can search this section of physics based on this start physical address received and length
Internal memory, and use the hardware parameter stored in this physical memory, perform system start-up.
When realizing, as it is shown in figure 1, BootLoader can apply for one section of regular length physical memory, being used for storing needs
Hardware parameter to be transmitted.BootLoader will need the memory storage of transmission in this physical memory, it is possible to calculates this hard
The CRC check value of part parameter, and this CRC check value is pre-stored in this physical memory.After this hardware parameter is stored,
The start physical address of this physical memory and length can be sent to operating system by BootLoader.Operating system is receiving
After this start physical address and length, corresponding physical memory can be searched, it is possible to based on be pre-stored in this physics
The algorithm that CRC check value in depositing is corresponding, the crc value of the hardware parameter preserved in Computational Physics internal memory.Operating system can compare
The CRC check value relatively calculated and the CRC check value prestored, when two crc values are consistent, operating system may determine that this hardware
Parameter has passed through CRC check.After by CRC check, operating system can read this hardware stored in this physical memory
Parameter, performs system start-up operation.
But, on the one hand, owing to BootLoader is the physics that the hardware parameter needing transmission is stored in regular length
In internal memory, owing to the length of this physical memory is fixed, so the hardware parameter that stores in this physical memory of BootLoader
Quantity is restricted, and then have impact on the BootLoader quantity to operating system nucleus transmission hardware parameter, reduces embedding
Enter the startup speed of formula equipment.
On the other hand, owing to, after os starting, the hardware parameter of this section of physical memory will be by other guide
Cover.If in the operating system stage, when needing to be used for multiple times above-mentioned hardware parameter, operating system can only be by continually
Access hardware chip, read this hardware parameter.Owing to operating system needs to access the hardware in above-mentioned embedded device continually
Chip, therefore reduces the operating rate of this embedded device.
Therefore, based on above-mentioned two aspect reasons, use based on BootLoader to the relevant skill of kernel transmission hardware parameter
Art, can reduce startup and the operating rate of embedded device.
The embodiment of the present invention proposes a kind of new method passing parameter to kernel based on BootLoader.By to based on
BootLoader passes the improvement of parameter mechanism, and the hardware parameter needing transmission can be stored in appointment physics by BootLoader
In depositing, it is possible to the address information of described physical memory is sent to operating system, the length of this physical memory is less than presetting
Length threshold institute, and this length threshold characterizes the maximum of hardware parameter size of single transmission.Operating system can be with base
In the described address information received, described physical memory is limited to non-can committed memory, and described physics can be read
The described hardware parameter stored in internal memory performs startup, and sets up the physical address of described physical memory with operating system logically
The mapping relations of the logical address in space, location.
On the one hand, before os starting, owing to the length of physical memory is by traditional regular length, change into length
Less than the length threshold preset, length threshold characterizes the maximum of the hardware parameter quantity of single transmission, therefore can be effective
Ground expands the quantity of transmission hardware parameter, improves the startup speed of operating system.
On the other hand, due to operating system this physical memory is limited to non-can committed memory, when after os starting,
This physical memory will not be occupied, and the hardware parameter stored in physical memory is safeguarded.When operating system needs to be used for multiple times
During this hardware parameter, can be obtained by this physical memory, without reading from hardware continually.This improves embedding
Enter the operating rate of formula equipment.
Based on above-mentioned both sides reason, the method using the embodiment of the present invention to provide can improve embedded device and start
With the speed run.
Seeing Fig. 2, Fig. 2 is that the one shown in the application one exemplary embodiment passes parameter based on BootLoader to kernel
The flow chart of method, the method is applied to embedded device, comprises the following steps:
The hardware parameter needing transmission is stored in appointment physical memory by step 201:BootLoader, and by described thing
The address information of reason internal memory is sent to operating system；Wherein, the length of described physical memory is less than the length threshold preset, institute
State the maximum that length threshold characterizes the hardware parameter quantity of single transmission.
In embedded device, BootLoader is the one section of bootstrap run before os starting, is mainly used in
Hardware parameter is transmitted, initiating hardware equipment and set up the space mapping etc. of internal memory to operating system nucleus.
Pass in the mechanism of parameter based on BootLoader to kernel relevant, after embedded device starts, in operation system
System initial phase, BootLoader can transmit hardware parameter to operating system nucleus.When realizing, BootLoader is permissible
The hardware parameter needing transmission is stored in the physical memory of one section of regular length, and the address information of this physical memory is passed
Pass operating system.Operating system, based on this address information received, obtains the hardware parameter stored in this physical memory, holds
Row system start-up.
Owing to the length of the physical memory of above-mentioned storage hardware parameter is fixed, therefore limit BootLoader to operation system
The quantity of system kernel transmission hardware parameter, reduces the startup speed of embedded device.
In the present embodiment, the hardware parameter needing transmission is stored in one section of physical memory by BootLoader, this thing
The length of reason internal memory is less than the length threshold preset, and this length threshold characterizes the maximum of the hardware parameter quantity of single transmission
Value.Due in the present embodiment, the length threshold preset is more than above-mentioned regular length, so BootLoader is at application physics
During internal memory, the length of physical memory to be applied for can be determined according to the number of transmitted hardware parameter quantity.Due to storage
The length of the physical memory depositing hardware parameter is become less than the length threshold preset from regular length, to a certain extent, increases
The big length of this physical memory, have also been enlarged the BootLoader quantity to operating system nucleus transmission hardware parameter, improves
The startup speed of embedded device.
When realizing, the hardware parameter quantity that BootLoader can transmit as required, apply for one section of physical memory, should
The length of physical memory is less than the length threshold preset.BootLoader can calculate the CRC of the hardware parameter needing transmission
Check value, it is possible to this CRC check value calculated is pre-stored in initial front 4 bytes of this physical memory, and this is hard
Part parameter is stored in this physical memory.The CRC check value needing the hardware parameter of transmission is pre-stored in this thing by BootLoader
The purpose of reason internal memory, is in order to operating system can carry out the CRC check of hardware parameter, it is ensured that the hardware parameter of transmission reliable
Property.
Wherein, BootLoader calculates read from physical memory in CRC check and the operating system of computing hardware parameter
The CRC check value of hardware parameter time, the algorithm used is identical.
After the hardware parameter and CRC check value that need transmission are pre-stored in above-mentioned physical memory, BootLoader
The address information of this physical memory can be sent to operating system.
Wherein, described address information includes the length etc. of the start physical address of physical memory, physical memory, here, not
Repeat one by one.
Step 202: described physical memory, based on the described address information received, is limited to non-taking by operating system
Internal memory.
Step 203: operating system reads the described hardware parameter stored in described physical memory and performs startup, and sets up institute
State the physical address of physical memory and the mapping relations of the logical address in operating system logical address space.
Passing in the mechanism of parameter to kernel based on BootLoader relevant, operating system is receiving BootLoader
After the address information of the above-mentioned physical memory of transmission, the hardware in above-mentioned physical memory can be used to join by this address information
Number.But, after os starting, the hardware parameter in this physical memory will be covered by other guide, this hardware parameter
Can not be safeguarded.If operating system needs this hardware parameter is used for multiple times, operating system can only access embedded continually
The hardware chip of equipment, reads this hardware parameter.Owing to operating system access hardware chip is excessively frequent, so it is embedding to reduce this
Enter the operating rate of formula equipment.
And in the present embodiment, operating system is in the address information of the above-mentioned physical memory receiving BootLoader transmission
After, can based on this address information, this physical memory is limited to non-can committed memory so that the hardware ginseng in this physical memory
Number will not be covered by other guide.Operating system can read the hardware ginseng in this physical memory based on this physical address information
Number, performs system start-up operation.After os starting, if this operating system needs to use this hardware parameter, operation system
System can read this hardware parameter from this section of physical memory, without accessing the hardware chip of embedded device continually,
Read this hardware parameter.Therefore, the operating rate of embedded device is improved.
When realizing, operating system can receive the address information of the above-mentioned physical memory of BootLoader transmission, and
Can based on this address information, this section of physical memory is limited to non-can committed memory.
Operating system can be by the address information of this physical memory from deleting committed memory white list.In operating system
During operation, if operating system needs to apply for that physical memory carries out other work, only meeting foundation can the white name of committed memory
In list, the physical memory of record is applied for, without taking the above-mentioned physical memory storing hardware parameter, therefore, above-mentioned thing
Hardware parameter in reason internal memory will not be covered by other guide, and hardware parameter is safeguarded.
Operating system can physical address information based on this physical memory, read in this physical memory store hardware ginseng
Number, performs system start-up operation.
After os starting, in order to repeatedly access the hardware parameter in this physical memory, in this physics
After depositing into row restriction, operating system can be set up the internal memory of this physical memory and map.
Operating system can be set up in the physical address of this physical memory and operating system logical address space logically
The mapping relations of location.After setting up mapping relations, after os starting, if operating system needs to use above-mentioned hardware to join
Number, operating system can obtain the physical address that this logical address is corresponding, it is possible to base based on this logical address and mapping relations
This physical memory is found, it is thus achieved that the hardware parameter stored in this physical memory in this physical address.
The most correct in order to determine the hardware parameter that BootLoader transmits, operating system can be to the hardware in this internal memory
Parameter carries out CRC check.When realizing, operating system can calculate this thing based on the algorithm corresponding with the CRC check value prestored
The CRC check value of reason internal memory, and the CRC check value calculated can be compared initiate front 4 words with being pre-stored in this physical memory
CRC check value in joint is the most consistent, and when two CRC check values are consistent, the CRC check of hardware parameter is passed through.
After by the CRC check of hardware parameter, operating system, at run duration, can be used for multiple times this physical memory
Hardware parameter, without repeatedly obtaining from hardware, improves the speed of service of this embedded device.
Wherein, above-mentioned can committed memory white list, including the address information that can take physical memory.Address above mentioned information bag
Include the start physical address of physical memory and the length etc. of physical memory, here, repeat the most one by one.Aforesaid operations system is set up should
The internal memory of physical memory maps and hardware parameter is carried out CRC check, is not limited by sequential.
The embodiment of the present invention proposes a kind of new method passing parameter to kernel based on BootLoader.By to based on
BootLoader passes the improvement of parameter mechanism to kernel, and the hardware parameter needing transmission can be stored in appointment by BootLoader
In physical memory, it is possible to the CRC check value of this parameter that prestores in this physical memory.The length of this physical memory is less than pre-
If length threshold, and this length threshold characterizes the maximum of hardware parameter size of single transmission.BootLoader is permissible
Start physical address and the length of described physical memory are sent to operating system.Operating system can based on receive this
Beginning physical address and length, described physical memory is limited to non-can committed memory, it is possible to set up operating system and set up described
The mapping relations of the logical address in the physical address of physical memory and operating system logical address space, it is possible to pre-based on this
The CRC check value deposited, carries out CRC check to this hardware parameter.After by the CRC check of this hardware parameter, in operation system
The system operation phase, operating system repeatedly can read in described physical memory based on described mapping relations and described logical address
The parameter stored.
On the one hand, before os starting, owing to the length of physical memory is by traditional regular length, change into length
Less than the length threshold preset, length threshold characterizes the maximum of the hardware parameter quantity of single transmission, therefore can be effective
Ground expands the quantity of transmission hardware parameter, improves the startup speed of operating system.
On the other hand, due to operating system this physical memory is limited to non-can committed memory, when after os starting,
This physical memory will not be occupied, and the hardware parameter stored in physical memory is safeguarded.When operating system needs to be used for multiple times
During this hardware parameter, can be obtained by this physical memory, without reading from hardware continually.This improves embedding
Enter the operating rate of formula equipment.
Additionally, operating system carries out CRC check to parameter may determine that the parameter of transmission is the most correct, enhance
BootLoader passes the reliability of parameter to operating system nucleus.
Based on above-mentioned factor, the method using the embodiment of the present invention to provide can improve embedded device and starts and run
Speed.
Seeing Fig. 3, Fig. 3 is that the another kind shown in the application one exemplary embodiment passes ginseng based on BootLoader to kernel
The flow chart of the method for number, described method is applied to embedded device, comprises the following steps:
The hardware parameter needing transmission is stored in one section of physical memory by step 301:BootLoader, this physical memory
Length less than preset length threshold.
Step 302:BootLoader calculates the crc value of this hardware parameter, and this crc value is pre-stored in this physical memory
In initial front 4 bytes.
Start physical address and the length of physical memory are sent to operating system by step 303:BootLoader.
In embedded device, BootLoader is the one section of bootstrap run before os starting, is mainly used in
Hardware parameter is transmitted, initiating hardware equipment and set up the space mapping etc. of internal memory to operating system nucleus.
Pass in the mechanism of parameter based on BootLoader to kernel relevant, after embedded device starts, in operation system
System initial phase, BootLoader can transmit hardware parameter to operating system nucleus.When realizing, BootLoader is permissible
The hardware parameter needing transmission is stored in the physical memory of one section of regular length, and initiateing this physical memory physically
Location and length pass to operating system.Operating system, based on this start physical address received and length, obtains in this physics
Deposit the hardware parameter of middle storage, perform system start-up.
Owing to the length of the physical memory of above-mentioned storage hardware parameter is fixed, therefore limit BootLoader to operation system
The quantity of system kernel transmission hardware parameter, reduces the startup speed of embedded device.
In the present embodiment, the hardware parameter needing transmission is stored in one section of physical memory by BootLoader, this thing
The length of reason internal memory is less than the length threshold preset, and this length threshold characterizes the maximum of the hardware parameter quantity of single transmission
Value.Due in the present embodiment, the length threshold preset is more than above-mentioned regular length, so BootLoader is at application physics
During internal memory, the length of physical memory to be applied for can be determined according to the number of transmitted hardware parameter quantity.Due to storage
The length of the physical memory depositing hardware parameter is become less than the length threshold preset from regular length, to a certain extent, increases
The big length of this physical memory, have also been enlarged the BootLoader quantity to operating system nucleus transmission hardware parameter, improves
The startup speed of embedded device.
When realizing, the hardware parameter quantity that BootLoader can transmit as required, apply for one section of physical memory, should
The length of physical memory is less than the length threshold preset.BootLoader can calculate the CRC of the hardware parameter needing transmission
Check value, it is possible to this CRC check value calculated is pre-stored in initial front 4 bytes of this physical memory, and this is hard
Part parameter is stored in this physical memory.The CRC check value needing the hardware parameter of transmission is pre-stored in this thing by BootLoader
The purpose of reason internal memory, is in order to operating system can carry out the CRC check of hardware parameter, it is ensured that the hardware parameter of transmission reliable
Property.
Wherein, BootLoader calculates read from physical memory in CRC check and the operating system of computing hardware parameter
The CRC check value of hardware parameter time, the algorithm used is identical.
After the hardware parameter and CRC check value that need transmission are pre-stored in above-mentioned physical memory, BootLoader
The length of the start physical address of this physical memory He this physical memory can be sent to operating system.
Step 304. operating system based on the start physical address received and length, this physical memory is limited to non-can
Committed memory.
Passing in the mechanism of parameter to kernel based on BootLoader relevant, operating system is receiving BootLoader
After the start physical address of the above-mentioned physical memory of transmission and length, can be used by this start physical address and length
State the hardware parameter in physical memory.But, after os starting, the hardware parameter in this physical memory will be by other
Content covers, and this hardware parameter can not be safeguarded.If operating system needs this hardware parameter is used for multiple times, operating system is only
The hardware chip of embedded device can be accessed continually, read this hardware parameter.Due to operating system access hardware chip excessively
Frequently, so the operating rate of this embedded device can be reduced.
And in the present embodiment, operating system is at the initial physics of the above-mentioned physical memory receiving BootLoader transmission
Behind address and length, can based on this start physical address and length, this physical memory is limited to non-can committed memory so that
Hardware parameter in this physical memory will not be covered by other guide.After os starting, if this operating system needs
Using this hardware parameter, operating system can read this hardware parameter from this section of physical memory, without by continually
Access the hardware chip of embedded device, read this hardware parameter.It is thus possible to improve the operating rate of embedded device.
When realizing, operating system can receive BootLoader transmission above-mentioned physical memory start physical address and
Length, and can based on this start physical address and length, this section of physical memory is limited to non-can committed memory.
Operating system can be by the start physical address of this physical memory and length from deleting committed memory white list.
During operating system, if operating system needs to apply for that physical memory carries out other work, only can be according to accounting for
Apply for the physical memory of record in internal memory white list, without taking the above-mentioned physical memory storing hardware parameter,
Therefore, the hardware parameter in above-mentioned physical memory will not be covered by other guide, and hardware parameter is safeguarded.
Operating system can read the hardware parameter in this physical memory based on this physical address information, performs system start-up
Operation.
Wherein, above-mentioned can committed memory white list, including start physical address and the length that can take physical memory.
Step 305: operating system sets up the physical address of this physical memory and patrolling in operating system logical address space
Collect the mapping relations of address
In the present embodiment, operating system can set up physical address and the operating system logical address sky of this physical memory
The mapping relations of the logical address between.After setting up mapping relations, after os starting, if operating system needs to use
Above-mentioned hardware parameter, operating system can obtain this logical address corresponding physically based on this logical address and mapping relations
Location, it is possible to find this physical memory based on this physical address, it is thus achieved that the hardware parameter stored in this physical memory.
Whether what step 306. operating system judged hardware parameter passes through CRC check.
Step 307. operating system uses this hardware parameter.
Step 308. operating system terminates this flow process.
The most correct in order to determine the hardware parameter that BootLoader transmits, operating system can be to the hardware in this internal memory
Parameter carries out CRC check.When realizing, operating system can calculate this thing based on the algorithm corresponding with the CRC check value prestored
The CRC check value of reason internal memory, and the CRC check value calculated can be compared initiate front 4 words with being pre-stored in this physical memory
CRC check value in joint is the most consistent, and when two CRC check values are consistent, the CRC check of hardware parameter is passed through.
After by the CRC check of hardware parameter, performing step 307, operating system, at run duration, can be used for multiple times
The hardware parameter of this physical memory, without repeatedly obtaining from hardware, improves the speed of service of this embedded device.As
Fruit, not over the CRC check of hardware parameter, performs step 308, and operating system determines that the hardware parameter of this transmission is incorrect, and
Terminate this flow process.
Aforesaid operations system is set up the internal memory of this physical memory and is mapped and hardware parameter is carried out CRC check, not by sequential
Limit.
The embodiment of the present invention proposes a kind of new method passing parameter to kernel based on BootLoader.By to based on
BootLoader passes the improvement of parameter mechanism to kernel, and the hardware parameter needing transmission can be stored in appointment by BootLoader
In physical memory, it is possible to the CRC check value of this parameter that prestores in this physical memory.The length of this physical memory is less than pre-
If length threshold, and this length threshold characterizes the maximum of hardware parameter size of single transmission.BootLoader is permissible
Start physical address and the length of described physical memory are sent to operating system.Operating system can based on receive this
Beginning physical address and length, described physical memory is limited to non-can committed memory, it is possible to set up operating system and set up described
The mapping relations of the logical address in the physical address of physical memory and operating system logical address space, it is possible to pre-based on this
The CRC check value deposited, carries out CRC check to this hardware parameter.After by the CRC check of this hardware parameter, in operation system
The system operation phase, operating system repeatedly can read in described physical memory based on described mapping relations and described logical address
The parameter stored.
On the one hand, before os starting, owing to the length of physical memory is by traditional regular length, change into length
Less than the length threshold preset, length threshold characterizes the maximum of the hardware parameter quantity of single transmission, therefore can be effective
Ground expands the quantity of transmission hardware parameter, improves the startup speed of operating system.
On the other hand, due to operating system this physical memory is limited to non-can committed memory, when after os starting,
This physical memory will not be occupied, and the hardware parameter stored in physical memory is safeguarded.When operating system needs to be used for multiple times
During this hardware parameter, can be obtained by this physical memory, without reading from hardware continually.This improves embedding
Enter the operating rate of formula equipment.
Additionally, operating system carries out CRC check to parameter may determine that the parameter of transmission is the most correct, enhance
BootLoader passes the reliability of parameter to operating system nucleus.
Based on above-mentioned factor, the method using the embodiment of the present invention to provide can improve embedded device and starts and run
Speed.
The application embodiment based on the device that BootLoader passes parameter to kernel can be applied on embedded device.
Device embodiment can be realized by software, it is also possible to realizes by the way of hardware or software and hardware combining.Implemented in software
As a example by, as the device on a logical meaning, it is that the processor by its place embedded device is by nonvolatile memory
The computer program instructions of middle correspondence reads and runs formation in internal memory.For hardware view, as shown in Figure 4, for this Shen
Please pass a kind of hardware structure diagram of the device place embedded device of parameter to kernel based on BootLoader, shown in Fig. 4
Processor, internal memory, network interface and nonvolatile memory outside, in embodiment the embedded device at device place lead to
Often according to the actual functional capability of the device that should pass parameter based on BootLoader to kernel, it is also possible to include other hardware, to this not
Repeat again.
Seeing Fig. 5, Fig. 5 is that the one shown in the application one exemplary embodiment passes parameter based on BootLoader to kernel
The block diagram of device, described device is applied to embedded device, and described device includes: transmitting element 510, limiting unit 520 and
Creating unit 530.
Wherein, transmitting element 510, for BootLoader, the hardware parameter needing transmission is stored in appointment physical memory
In, and the address information of described physical memory is sent to operating system；Wherein, the length of described physical memory is less than presetting
Length threshold, described length threshold characterizes the maximum of hardware parameter quantity of single transmission；
Limiting unit 520, for operating system based on the described address information received, is limited to described physical memory
Non-can committed memory；
Creating unit 530, reads, for operating system, the described hardware parameter stored in described physical memory and performs startup,
And set up the physical address of described physical memory and the mapping relations of the logical address in operating system logical address space.
In an optional implementation:
Described device also includes (not shown in Fig. 5): determine unit, for when, after described os starting, searching institute
State mapping relations, determine the described physical address corresponding with described logical address；Read unit, for operating system based on described
Physical address, reads described hardware parameter from corresponding described physical memory.
In another optional implementation:
Described limiting unit 520 also includes: deletes subelement, for operating system based on described address information, can account for
With internal memory white list is deleted the address information of described physical memory, wherein, described can include taking by committed memory white list
The address information of physical memory.
In another optional implementation:
Described device also includes (not shown in Fig. 5): storage element, for BootLoader by the ground of described physical memory
Before location information is sent to operating system, the CRC check value for described hardware parameter precomputed is pre-stored in described
Specified bytes in physical memory；Verification unit, for operating system based on described physical address, reads in described physical memory
The described CRC check value stored, and based on described CRC check value, for the hardware parameter read from described physical memory
Carry out CRC check.
In another optional implementation:
Described verification unit includes: computation subunit, calculates the CRC check value of described hardware parameter for operating system；
Relatively subelement, the CRC check value stored in the CRC check value that calculates described in comparing with described physical memory whether
Cause；When the described CRC check value calculated is consistent with the CRC check value stored in described physical memory, determine described CRC school
Test and pass through.
In said apparatus, the function of unit and the process that realizes of effect specifically refer to corresponding step in said method
Realize process, do not repeat them here.
For device embodiment, owing to it corresponds essentially to embodiment of the method, so relevant part sees method in fact
The part executing example illustrates.Device embodiment described above is only schematically, wherein said as separating component
The unit illustrated can be or may not be physically separate, and the parts shown as unit can be or can also
It not physical location, i.e. may be located at a place, or can also be distributed on multiple NE.Can be according to reality
Need to select some or all of module therein to realize the purpose of the application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, i.e. it is appreciated that and implements.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, all essences in the application
Within god and principle, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the application protection.
Claims (10)
1. the method passing parameter to kernel based on BootLoader, it is characterised in that described method is applied to embedded setting
Standby, including:
The hardware parameter needing transmission is stored in appointment physical memory by BootLoader, and by the address of described physical memory
Information is sent to operating system；Wherein, the length of described physical memory is less than the length threshold preset, described length threshold table
Levy the maximum of the hardware parameter quantity of single transmission；
Operating system based on the described address information received, described physical memory is limited to non-can committed memory；
Operating system reads the described hardware parameter stored in described physical memory and performs startup, and sets up described physical memory
The mapping relations of the logical address in physical address and operating system logical address space.
Method the most according to claim 1, it is characterised in that also include:
When, after described os starting, searching described mapping relations, determine corresponding with described logical address described in physically
Location；
Operating system, based on described physical address, reads described hardware parameter from corresponding described physical memory.
Method the most according to claim 1, it is characterised in that described operating system is based on the described address letter received
Breath, described physical memory is limited to non-can committed memory, including:
Operating system based on described address information, can delete the address information of described physical memory in committed memory white list,
Wherein, described the address information that can take physical memory can be included by committed memory white list.
Method the most according to claim 1, it is characterised in that the address information of described physical memory is sent out by BootLoader
Before giving operating system, also include:
The CRC check value for described hardware parameter precomputed is stored in described physical memory by BootLoader
Specified bytes；
Described method also includes:
Operating system, based on described physical address, reads the described CRC check value stored in described physical memory, and based on described
CRC check value, carries out CRC check for the hardware parameter read from described physical memory.
Method the most according to claim 4, it is characterised in that described for the hardware read from described physical memory
Parameter carries out CRC check, including:
Operating system calculates the CRC check value of described hardware parameter；
The CRC check value calculated described in Bi compare is the most consistent with the CRC check value stored in described physical memory；When described meter
When the CRC check value calculated is consistent with the CRC check value stored in described physical memory, determine that described CRC check is passed through.
6. the device passing parameter based on BootLoader to kernel, it is characterised in that described device includes:
Transmitting element, is stored in the hardware parameter needing transmission in appointment physical memory for BootLoader, and by described
The address information of physical memory is sent to operating system；Wherein, the length of described physical memory is less than the length threshold preset,
Described length threshold characterizes the maximum of the hardware parameter quantity of single transmission；
Limiting unit, for operating system based on the described address information received, is limited to non-accounting for by described physical memory
Use internal memory；
Creating unit, reads, for operating system, the described hardware parameter stored in described physical memory and performs startup, and set up
The mapping relations of the logical address in the physical address of described physical memory and operating system logical address space.
Device the most according to claim 6, it is characterised in that described device also includes:
Determine unit, for when, after described os starting, searching described mapping relations, determine corresponding with described logical address
Described physical address；
Read unit, for operating system based on described physical address, from corresponding described physical memory, read described hardware
Parameter.
Device the most according to claim 6, it is characterised in that described limiting unit, including:
Delete subelement, for operating system based on described address information, committed memory white list can delete described physics
The address information of internal memory, wherein, described can include the address information that can take physical memory by committed memory white list.
Device the most according to claim 6, it is characterised in that described device also includes:
Storage element, before the address information of described physical memory is sent to operating system by BootLoader, will in advance
The CRC check value for described hardware parameter calculated is stored in the specified bytes in described physical memory；
Verification unit, for operating system based on described physical address, reads the described CRC check stored in described physical memory
Value, and based on described CRC check value, carry out CRC check for the hardware parameter read from described physical memory.
Device the most according to claim 9, it is characterised in that described verification unit, also includes:
Computation subunit, calculates the CRC check value of described hardware parameter for operating system；
Relatively subelement, for the CRC check value calculated described in comparing with the CRC check value of storage in described physical memory be
No unanimously；When the described CRC check value calculated is consistent with the CRC check value stored in described physical memory, determine described
CRC check is passed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610598689.1A CN106155961B (en) | 2016-07-25 | 2016-07-25 | The method and device of parameter is passed to kernel based on BootLoader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610598689.1A CN106155961B (en) | 2016-07-25 | 2016-07-25 | The method and device of parameter is passed to kernel based on BootLoader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106155961A true CN106155961A (en) | 2016-11-23 |
| CN106155961B CN106155961B (en) | 2019-08-06 |
Family
ID=58060236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610598689.1A Active CN106155961B (en) | 2016-07-25 | 2016-07-25 | The method and device of parameter is passed to kernel based on BootLoader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106155961B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108334413A (en) * | 2017-12-22 | 2018-07-27 | 天津麒麟信息技术有限公司 | Information transmitting methods between a kind of firmware and operating system based on platform of soaring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763279A (en) * | 2010-01-15 | 2010-06-30 | 上海维宏电子科技有限公司 | BootLoader architectural design method |
| US20110145807A1 (en) * | 2008-06-02 | 2011-06-16 | Awox | Method and device for updating a computer application |
| CN104809013A (en) * | 2015-04-21 | 2015-07-29 | 北京创毅视讯科技有限公司 | Embedded system starting method and device |
| CN104915302A (en) * | 2014-03-10 | 2015-09-16 | 华为技术有限公司 | Data transmission processing method and data transmission unit |
-
2016
- 2016-07-25 CN CN201610598689.1A patent/CN106155961B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110145807A1 (en) * | 2008-06-02 | 2011-06-16 | Awox | Method and device for updating a computer application |
| CN101763279A (en) * | 2010-01-15 | 2010-06-30 | 上海维宏电子科技有限公司 | BootLoader architectural design method |
| CN104915302A (en) * | 2014-03-10 | 2015-09-16 | 华为技术有限公司 | Data transmission processing method and data transmission unit |
| CN104809013A (en) * | 2015-04-21 | 2015-07-29 | 北京创毅视讯科技有限公司 | Embedded system starting method and device |
Non-Patent Citations (1)
| Title |
|---|
| 周超: "Linux操作系统在ARM硬件平台上的移植", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108334413A (en) * | 2017-12-22 | 2018-07-27 | 天津麒麟信息技术有限公司 | Information transmitting methods between a kind of firmware and operating system based on platform of soaring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106155961B (en) | 2019-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104679540B (en) | Computer system and computer system starting method | |
| US8935473B2 (en) | System and method for a portable memory device to access and acquire additional memory from a remote location | |
| US20110302224A1 (en) | Data storage device with preloaded content | |
| CN103136024B (en) | A kind of reliable discharging method of application program, device and mobile device | |
| US9710340B2 (en) | Replacement of a corrupt driver variable record | |
| EP3543858B1 (en) | Method for checking and compiling system start-up files | |
| JP2009510544A (en) | Decompression technology for generating software images | |
| CN102163155A (en) | Upgrade controlling device and method for upgrading memory device | |
| CN106250125A (en) | Obtain the method and device of daily record | |
| CN105677409B (en) | A kind of method for upgrading system and device | |
| WO2019144621A1 (en) | Method, apparatus, and server for acquiring uefi os startup item | |
| CN106873970A (en) | The installation method and device of a kind of operating system | |
| CN103455750B (en) | The high peace verification method of a kind of embedded device and device | |
| CN114385251A (en) | Operating system booting method, system, terminal and storage medium based on memory | |
| KR20180096660A (en) | Validating memory device actions using reference values | |
| CN106155961A (en) | Pass the method and device of parameter to kernel based on BootLoader | |
| US20100050166A1 (en) | Updating system and method of portable executable programs | |
| CN100363893C (en) | Loading system and method | |
| CN110765125B (en) | Method and device for storing data | |
| CN106557572A (en) | A kind of extracting method and system of Android application program file | |
| CN109408265A (en) | A kind of guard method, device, terminal device and storage medium that IOS is operating abnormally | |
| CN106033398A (en) | Data processing system, external device starting method, and data processing method | |
| CN112583794B (en) | Interface calling method and device, computer equipment and storage medium | |
| CN105630991B (en) | ID automatic generation method and device | |
| CN107038021B (en) | For accessing the methods, devices and systems of random access memory ram |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Applicant after: Hangzhou Dipu Polytron Technologies Inc Address before: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Applicant before: Hangzhou Dipu Technology Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |