CN107450935A - A kind of BOOTROM of chip starts collocation method and device - Google Patents
A kind of BOOTROM of chip starts collocation method and device Download PDFInfo
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- CN107450935A CN107450935A CN201610367603.4A CN201610367603A CN107450935A CN 107450935 A CN107450935 A CN 107450935A CN 201610367603 A CN201610367603 A CN 201610367603A CN 107450935 A CN107450935 A CN 107450935A
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- crystal oscillator
- external crystal
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44505—Configuring for program initiating, e.g. using registry, configuration files
Abstract
The invention discloses a kind of BOOTROM of chip to start collocation method and device, and the BOOTROM of chip starts collocation method, including：When it is determined that chip is started or downloaded by BOOTROM softwares, BOOTROM softwares are triggered；Determine the external crystal oscillator type of the chip；According to the external crystal oscillator type, and system configuration strategy corresponding with the external crystal oscillator type, complete corresponding system configuration；After the completion of the system configuration, perform standard BOOTROM and start or download flow.Technical scheme allows system to support a variety of external crystal-controlled oscillations to input, when chip in order to meet different demands, it is necessary to when changing external crystal-controlled oscillation, it is not necessary to change BOOTROM codes, make chip adaptive change.
Description
Technical field
The present embodiments relate to chip design art, more particularly to a kind of chip BOOTROM start collocation method and
Device.
Background technology
It is a kind of important way that chip starts that BOOTROM, which starts and (also referred to as started in piece),.When selection is opened from BOOTROM
When dynamic, on chip after electricity, BOOTROM programs are run first.
BOOTROM codes are to complete disposable programming in foundries, and the BOOTROM codes returned after piece can only be read, it is impossible to
Write, so this just proposes very high requirement to its reliability, if gross error, may result in chip can not guide
Come, can not normal use, so as to result in the need for throwing piece again.Consideration based on reliability, traditional BOOTROM codes are only supported
A kind of external crystal-controlled oscillation input, that is, give tacit consent to crystal oscillator input.
However, when product is in order to meet different demands, and changes external crystal-controlled oscillation, because hardware modifications can cause
BOOTROM code functions fail, and need to throw piece again in such cases, thus can cause the increase of cost.
The content of the invention
The present invention provides a kind of BOOTROM of chip and starts collocation method and device, supports system with realization more
Kind external crystal-controlled oscillation input, when product is in order to meet different demands, it is necessary to when changing external crystal-controlled oscillation, BOOTROM codes need not be repaiied
Change, adaptive corresponding change can be accomplished.
In a first aspect, the embodiments of the invention provide a kind of BOOTROM of chip to start collocation method, including：
When it is determined that chip is started or downloaded by BOOTROM softwares, BOOTROM softwares are triggered；
Determine the external crystal oscillator type of the chip；
According to the external crystal oscillator type, and system configuration strategy corresponding with the external crystal oscillator type, complete phase
The system configuration answered；
After the completion of the system configuration, perform standard BOOTROM and start or download flow.
Second aspect, the BOOTROM that the embodiment of the present invention additionally provides a kind of chip start configuration device, including：
BOOTROM trigger modules, for when it is determined that chip is started or downloaded by BOOTROM softwares, triggering
BOOTROM softwares；
External crystal oscillator determination type module, for determining the external crystal oscillator type of the chip；
System configuration module, for according to the external crystal oscillator type, and corresponding with the external crystal oscillator type it is
System configuration strategy, completes corresponding system configuration；
System starting module, for after the completion of the system configuration, performing standard BOOTROM startups or lower current-carrying
Journey.
The present invention performs the system configuration strategy corresponding with external crystal oscillator type, entered by determining external crystal oscillator type
Row system configuration, when solving replacing external crystal-controlled oscillation caused by traditional BOOTROM codes only support a kind of external crystal-controlled oscillation input, because
For BOOTROM code functions Problem of Failure caused by hardware modifications, realize that BOOTROM codes are not required to when changing external crystal-controlled oscillation
Change, the effect of adaptive change can be accomplished.
Brief description of the drawings
Fig. 1 is that a kind of BOOTROM of chip of the embodiment of the present invention one starts the flow chart of collocation method；
Fig. 2 is that a kind of BOOTROM of chip of the embodiment of the present invention two starts the flow chart of collocation method；
Fig. 3 is that a kind of BOOTROM of chip of the embodiment of the present invention three starts the flow chart of collocation method；
Fig. 4 is that a kind of BOOTROM of chip of the embodiment of the present invention four starts the flow chart of collocation method；
Fig. 5 is that a kind of BOOTROM of chip of the embodiment of the present invention five starts the flow chart of collocation method；
Fig. 6 is that a kind of BOOTROM of chip of the embodiment of the present invention six starts the structural representation of configuration device.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 is that a kind of BOOTROM for chip that the embodiment of the present invention one provides starts the flow chart of collocation method, this implementation
Example is applicable to the situation of chip BOOTROM startups, and this method can be started by the BOOTROM for the chip being arranged in chip matches somebody with somebody
Device is put to perform, is specifically comprised the following steps：
Step 110, when it is determined that chip is started or downloaded by BOOTROM softwares, trigger BOOTROM softwares.
Wherein, BOOTROM is the startup code of chip, and BOOTROM codes are solidificated in ROM (Read-Only in piece
Memory, read-only storage) in.
Step 120, the external crystal oscillator type for determining chip.
Wherein, by identification information corresponding to obtaining external crystal oscillator type, the external crystal oscillator type of chip is determined, preferably
, external crystal oscillator type is the frequency of external crystal oscillator.
Step 130, according to external crystal oscillator type, and system configuration strategy corresponding with external crystal oscillator type, complete phase
The system configuration answered.
Wherein, it is necessary to configured to system when chip starts, it is determined that after external crystal oscillator type, according to pre-setting
System configuration strategy corresponding with external crystal oscillator type, to system carry out corresponding configuration.
Step 140, after the completion of system configuration, perform standard BOOTROM and start or download flow.
The technical scheme of the present embodiment, by determining external crystal oscillator type, perform and corresponding with external crystal oscillator type be
System configuration strategy, carries out system configuration, solves traditional BOOTROM codes and only supports to change caused by a kind of external crystal-controlled oscillation input
During external crystal-controlled oscillation, because BOOTROM code functions Problem of Failure caused by hardware modifications, when realizing replacing external crystal-controlled oscillation,
BOOTROM codes need not be changed, and can accomplish the effect of adaptive change.
Embodiment two
Fig. 2 is that a kind of BOOTROM for chip that the embodiment of the present invention two provides starts the flow chart of collocation method, this implementation
The technical scheme of example is on the basis of above-described embodiment, and further refinement, step 120 include：
Step 210, the input level value for reading setting GPIO pins.
Wherein, at least one GPIO (General Purpose Input Output, universal input/defeated on chip are chosen
Go out) pin for setting GPIO pins, and will set GPIO pin configurations as input pattern, for chip connection external crystal oscillator when,
According to external crystal oscillator type, level value corresponding with external crystal oscillator type is inputted to setting GPIO pins.
Step 220, according to input level value, and between the input level value to prestore and external crystal oscillator type it is corresponding pass
System, determine the external crystal oscillator type of chip.
Wherein, when setting the quantity of GPIO pins as 1, according to input level value and the input level value to prestore with
Corresponding relation between external crystal oscillator type, determine the external crystal oscillator type of chip, example, set the quantity of GPIO pins as
1, when input level value is high value, external crystal oscillator type is acquiescence crystal oscillator (26MHz), and input level value is low level value
When, external crystal oscillator type is amendment crystal oscillator (32MHz).When setting the quantity more than one of GPIO pins, according to input level value
Combination and the combination of the input level value that prestores and external crystal oscillator type between corresponding relation, determine the external crystalline substance of chip
Shake type, example, set the quantity of GPIO pins as 2, the first setting GPIO pins and the second setting GPIO pins it is defeated
When to enter level value be high value, external crystal oscillator type is acquiescence crystal oscillator (26MHz), and the first setting GPIO pins and second are set
When the input level value for determining GPIO pins is low level value, external crystal oscillator type be first amendment crystal oscillator (19.2MHz), first
The input level value of GPIO pins is set as high value, while second sets the input level value of GPIO pins as low level
Value, external crystal oscillator type are the second amendment crystal oscillator (20MHz), and first sets the input level value of GPIO pins as low level value,
While second sets the input level value of GPIO pins as high value, external crystal oscillator type is the 3rd amendment crystal oscillator (32MHz).
The technical scheme of the present embodiment, the input level value of GPIO pins is set by obtaining, determines external crystal oscillator type,
Realize in the external crystal oscillator of system conversion, adapted to automatically according to external crystal oscillator type.
Embodiment three
Fig. 3 is that a kind of BOOTROM for chip that the embodiment of the present invention three provides starts the flow chart of collocation method, this implementation
The technical scheme of example is on the basis of embodiment one, and further refinement, step 120 include：
Step 310, read the crystal oscillator categorical data stored in piece in EFUSE.
Wherein, crystal oscillator categorical data programming corresponding to each external crystal oscillator type entered into EFUSE in piece in advance (electrical programming melts
Silk) memory space, after BOOTROM running softwares get up, the data stored in piece in EFUSE can be read first.
Step 320, according to crystal oscillator categorical data, and pair between the crystal oscillator categorical data to prestore and external crystal oscillator type
It should be related to, determine the external crystal oscillator type of chip.
Wherein, after BOOTROM running softwares get up, by reading the crystal oscillator categorical data stored in piece in EFUSE, and tie
The corresponding relation between the crystal oscillator categorical data to prestore and external crystal oscillator type is closed, determines the external crystal oscillator type of chip.Example
, the crystal oscillator categorical data read out of piece in EFUSE is 0x0, and corresponding external crystal oscillator type is acquiescence crystal oscillator (26MHz)；
The crystal oscillator categorical data read out of piece in EFUSE is 0x1, and corresponding external crystal oscillator type is the first amendment crystal oscillator
(19.2MHz)；The crystal oscillator categorical data read out of piece in EFUSE is 0x2, and corresponding external crystal oscillator type is that the second amendment is brilliant
Shake (20MHz)；The crystal oscillator categorical data read out of piece in EFUSE is 0x3, and corresponding external crystal oscillator type is that the 3rd amendment is brilliant
Shake (32MHz).
The technical scheme of the present embodiment, by obtaining the crystal oscillator categorical data to be prestored in piece in EFUSE, determine external crystal oscillator
Type, realize in the external crystal oscillator of system conversion, adapted to automatically according to external crystal oscillator type.
Example IV
Fig. 4 is that a kind of BOOTROM for chip that the embodiment of the present invention four provides starts the flow chart of collocation method, this implementation
The technical scheme of example is on the basis of embodiment one, and further refinement, step 120 include：
Step 410, judging whether include EFUSE in chip, if it is determined that chip includes EFUSE, performs step 420,
If it is determined that not including EFUSE in chip, step 430 is performed.
Step 420, the crystal oscillator categorical data stored in EFUSE is read, and according to crystal oscillator categorical data, and the crystalline substance to prestore
The corresponding relation to shake between categorical data and external crystal oscillator type, determine the external crystal oscillator type of chip.
Step 430, the input level value for reading setting GPIO pins, and according to input level value, and the input to prestore
Corresponding relation between level and external crystal oscillator type, determine the external crystal oscillator type of chip.
Further, also include before the crystal oscillator categorical data stored in reading EFUSE：
In the advance programmings of EFUSE crystal oscillator categorical data corresponding with external crystal oscillator.
The technical scheme of the present embodiment, detection chip whether EFUSE in configuration slice, possess the feelings of EFUSE in piece in chip
Under condition, the crystal oscillator categorical data by obtaining EFUSE memory storages is selected, determines external crystal oscillator type, so setting to be reduced
To the occupancy of GPIO pin resources, the service efficiency of resources of chip is improved.
Embodiment five
Fig. 5 is that a kind of BOOTROM for chip that the embodiment of the present invention five provides starts the flow chart of collocation method, this implementation
The technical scheme of example is on the basis of above-described embodiment, and further refinement, step 130 include：
Step 510, judge external crystal oscillator type, if external crystal oscillator type is acquiescence crystal oscillator, perform step 520, if
External crystal oscillator type is to be different from the amendment crystal oscillator of acquiescence crystal oscillator, performs step 530.
Step 520, perform standard BOOTROM startups or download flow.
Step 530, basis crystal oscillator frequency corresponding with external crystal oscillator type, configuration PLL (Phase Locked Loop, lock
Phase ring), and perform sleep awakening flow and make configuration take-effective.
Wherein, it is preferred that the input level value of GPIO pins is set by reading or reads the crystalline substance stored in piece in EFUSE
Shake categorical data, determines crystal oscillator frequency corresponding to external crystal oscillator type, and then configure PLL.Sleep awakening flow includes：Sleep
Into, after meeting to enter the condition of sleep, the sleep awakening module meeting automatic start sleeping controller in chip, stop PLL,
Stop external crystal-controlled oscillation, now chip enters sleep, and wait is waken up；The wake-up of sleep, when wake-up interrupts are effective, system can quilt
Wake up, after sleep awakening module receives interruption, open external crystal-controlled oscillation, PLL is opened after reference input clock stable, PLL outputs are steady
After fixed, chip clock is opened, now chip is waken up, and is returned to working condition, is interrupted the processor of wake-up since at sleep
Continue executing with.
The technical scheme of the present embodiment, corresponding configuration strategy is used according to external crystal oscillator type, realize and change outside crystalline substance
When shaking, BOOTROM codes need not be changed, and can accomplish the effect of adaptive change.
Embodiment six
Fig. 6 is that a kind of BOOTROM for chip that the embodiment of the present invention six provides starts the structural representation of configuration device, core
The BOOTROM of piece starts configuration device 60 and is configured at chip internal, including：
BOOTROM trigger modules 610, for when it is determined that chip is started or downloaded by BOOTROM softwares, triggering
BOOTROM softwares；
External crystal oscillator determination type module 620, for determining the external crystal oscillator type of chip；
System configuration module 630, for according to external crystal oscillator type, and system configuration corresponding with external crystal oscillator type
Strategy, complete corresponding system configuration；
System starting module 640, start or download flow for after the completion of system configuration, performing standard BOOTROM.
The technical scheme of the present embodiment, by determining external crystal oscillator type, perform and corresponding with external crystal oscillator type be
System configuration strategy, carries out system configuration, solves traditional BOOTROM codes and only supports to change caused by a kind of external crystal-controlled oscillation input
During external crystal-controlled oscillation, because BOOTROM code functions Problem of Failure caused by hardware modifications, when realizing replacing external crystal-controlled oscillation,
BOOTROM codes need not be changed, and can accomplish the effect of adaptive change.
Further, external crystal oscillator determination type module can include：
Level value reading unit, for reading the input level value of setting GPIO pins；
First external crystal oscillator type determining units, for according to input level value, and the input level value to prestore with it is outer
The corresponding relation between crystal oscillator type is connect, determines the external crystal oscillator type of chip.
Or external crystal oscillator determination type module can include：
Crystal oscillator categorical data reading unit, for reading the crystal oscillator categorical data stored in piece in EFUSE；
Second external crystal oscillator type determining units, for according to crystal oscillator categorical data, and the crystal oscillator categorical data to prestore
With the corresponding relation between external crystal oscillator type, the external crystal oscillator type of chip is determined.
Or, external crystal oscillator determination type module can include again：
External crystal oscillator type EFUSE determining units, for if it is determined that chip includes EFUSE, then reading in EFUSE and depositing
The crystal oscillator categorical data of storage, and according to crystal oscillator categorical data, and between the crystal oscillator categorical data to prestore and external crystal oscillator type
Corresponding relation, determine the external crystal oscillator type of chip；
External crystal oscillator type level value determining unit, for if it is determined that not including EFUSE in chip, then reading to be set
The input level value of GPIO pins, and according to input level value, and between the incoming level to prestore and external crystal oscillator type
Corresponding relation, determine the external crystal oscillator type of chip.
Further, the BOOTROM of chip starts configuration device and can also included：
The pre- writing module of crystal oscillator categorical data, in the advance programmings of EFUSE crystal oscillator categorical data corresponding with external crystal oscillator.
Further, system configuration module can include：
Crystal oscillator dispensing unit is corrected, if being to be different from the amendment crystal oscillator of acquiescence crystal oscillator for external crystal oscillator type, according to
Crystal oscillator frequency corresponding with external crystal oscillator type, PLL is configured, and perform sleep awakening flow to make configuration take-effective.
Further, system configuration module can also include：
Give tacit consent to crystal oscillator dispensing unit, if being acquiescence crystal oscillator for external crystal oscillator type, perform standard BOOTROM start or
Person downloads flow.
The said goods can perform the method that any embodiment of the present invention is provided, and possess the corresponding functional module of execution method
And beneficial effect.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (14)
1. a kind of BOOTROM of chip starts collocation method, it is characterised in that including：
When it is determined that chip is started or downloaded by BOOTROM softwares, BOOTROM softwares are triggered；
Determine the external crystal oscillator type of the chip；
According to the external crystal oscillator type, and system configuration strategy corresponding with the external crystal oscillator type, complete corresponding
System configuration；
After the completion of the system configuration, perform standard BOOTROM and start or download flow.
2. according to the method for claim 1, it is characterised in that the external crystal oscillator type for determining the chip includes：
Read the input level value of setting GPIO pins；
According to the input level value, and the corresponding relation between the input level value to prestore and external crystal oscillator type, it is determined that
The external crystal oscillator type of the chip.
3. according to the method for claim 1, it is characterised in that the external crystal oscillator type for determining the chip includes：
Read the crystal oscillator categorical data stored in piece in EFUSE；
According to the crystal oscillator categorical data, and the corresponding relation between the crystal oscillator categorical data to prestore and external crystal oscillator type,
Determine the external crystal oscillator type of the chip.
4. according to the method for claim 1, it is characterised in that the external crystal oscillator type for determining the chip includes：
If it is determined that the chip includes EFUSE, then the crystal oscillator categorical data stored in the EFUSE is read, and according to institute
Crystal oscillator categorical data is stated, and the corresponding relation between the crystal oscillator categorical data to prestore and external crystal oscillator type, determine the core
The external crystal oscillator type of piece；
If it is determined that not including EFUSE in the chip, then the input level value of setting GPIO pins is read, and according to described defeated
Enter level value, and the corresponding relation between the incoming level to prestore and external crystal oscillator type, determine the external crystalline substance of the chip
Shake type.
5. according to the method described in claim any one of 3-4, it is characterised in that the crystal oscillator type stored in EFUSE is read
Also include before data：
In the advance programmings of EFUSE crystal oscillator categorical data corresponding with external crystal oscillator.
6. according to the method for claim 1, it is characterised in that it is described according to the external crystal oscillator type, and with it is described
System configuration strategy corresponding to external crystal oscillator type, completing corresponding system configuration includes：
If the external crystal oscillator type is to be different from the amendment crystal oscillator of acquiescence crystal oscillator, according to corresponding with the external crystal oscillator type
Crystal oscillator frequency, configure PLL, and perform sleep awakening flow and make configuration take-effective.
7. according to the method for claim 1, it is characterised in that it is described according to the external crystal oscillator type, and with it is described
System configuration strategy corresponding to external crystal oscillator type, completing corresponding system configuration also includes：
If the external crystal oscillator type is acquiescence crystal oscillator, performs standard BOOTROM and start or download flow.
8. a kind of BOOTROM of chip starts configuration device, it is characterised in that including：
BOOTROM trigger modules, for when it is determined that chip is started or downloaded by BOOTROM softwares, triggering BOOTROM to be soft
Part；
External crystal oscillator determination type module, for determining the external crystal oscillator type of the chip；
System configuration module, for according to the external crystal oscillator type, and system corresponding with the external crystal oscillator type is matched somebody with somebody
Strategy is put, completes corresponding system configuration；
System starting module, start or download flow for after the completion of the system configuration, performing standard BOOTROM.
9. device according to claim 8, it is characterised in that the external crystal oscillator determination type module includes：
Level value reading unit, for reading the input level value of setting GPIO pins；
First external crystal oscillator type determining units, for according to the input level value, and the input level value to prestore with it is outer
The corresponding relation between crystal oscillator type is connect, determines the external crystal oscillator type of the chip.
10. device according to claim 8, it is characterised in that the external crystal oscillator determination type module includes：
Crystal oscillator categorical data reading unit, for reading the crystal oscillator categorical data stored in piece in EFUSE；
Second external crystal oscillator type determining units, for according to the crystal oscillator categorical data, and the crystal oscillator categorical data to prestore
With the corresponding relation between external crystal oscillator type, the external crystal oscillator type of the chip is determined.
11. device according to claim 8, it is characterised in that the external crystal oscillator determination type module includes：
External crystal oscillator type EFUSE determining units, for if it is determined that the chip includes EFUSE, then reading the EFUSE
The crystal oscillator categorical data of middle storage, and according to the crystal oscillator categorical data, and the crystal oscillator categorical data to prestore and external crystal oscillator
Corresponding relation between type, determine the external crystal oscillator type of the chip；
External crystal oscillator type level value determining unit, for if it is determined that not including EFUSE in the chip, then reading to be set
The input level value of GPIO pins, and according to the input level value, and the incoming level to prestore and external crystal oscillator type it
Between corresponding relation, determine the external crystal oscillator type of the chip.
12. according to the device described in claim any one of 10-11, it is characterised in that also include：
The pre- writing module of crystal oscillator categorical data, in the advance programmings of EFUSE crystal oscillator categorical data corresponding with external crystal oscillator.
13. device according to claim 8, it is characterised in that the system configuration module includes：
Crystal oscillator dispensing unit is corrected, if being to be different from the amendment crystal oscillator of acquiescence crystal oscillator for the external crystal oscillator type, according to
Crystal oscillator frequency corresponding with the external crystal oscillator type, configures PLL, and perform sleep awakening flow to make configuration take-effective.
14. device according to claim 8, it is characterised in that the system configuration module also includes：
Give tacit consent to crystal oscillator dispensing unit, if being acquiescence crystal oscillator for the external crystal oscillator type, perform standard BOOTROM start or
Person downloads flow.
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Application publication date: 20171208 |