CN114579502A - Burning interface system, microprocessor and burning method - Google Patents
Burning interface system, microprocessor and burning method Download PDFInfo
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- 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
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
A burning interface system, a microprocessor and a burning method are provided, the burning interface system includes: the recorder state detection module is used for determining the communication state of the recorder and the recording interface system after receiving a power-on reset signal sent by a processor core of the microprocessor and outputting a first multiplexing selection signal according to the communication state; the port multiplexing unit is used for selecting one of the burning data output end and the multiplexing output end to output data information according to the first multiplexing selection signal; the universal serial bus interface module is used for carrying out data communication with the burner; the main controller module is used for determining the decryption state of the memory according to the data information and executing a burning step control strategy on the memory according to the decryption state; and the memory driving module is used for executing the burning step control strategy on the memory so as to complete the burning of the memory. The chip port multiplexing can be realized through the burning interface system, and the problems of complex burning process, low speed and high hardware cost are solved.
Description
Technical Field
The invention belongs to the technical field of electronics, and particularly relates to a burning interface system, a microprocessor and a burning method.
Background
Non-volatile memories are widely used in various processor chips due to their excellent property of not losing data after power down, such as flash memory. The current burning method for the nonvolatile processor can be divided into two technical types, the first type is to burn the nonvolatile memory in the chip through a JTAG interface and an emulator which are connected with the chip and a corresponding upper computer, the research and development cost and difficulty are improved, the chip needs to integrate the JTAG interface, the complexity of chip design is increased, the speed is slow when the nonvolatile memory is burned on a huge number of chips, and the burning cost is high. The second is to burn the data transmitted from the external device by using a communication interface peripheral of the chip, such as a UART serial interface, which has a high requirement for the integrated resources of the chip, and requires a ROM which can be solidified and started, a large internal RAM resource, and a related communication interface peripheral, which increases the complexity of chip design, increases the area of the chip, and has a complicated burning process.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a burning interface system which solves the problems of complex burning process, low speed and high hardware cost.
The invention also provides a microprocessor and a burning method.
The burning interface system according to the embodiment of the first aspect of the invention comprises:
the burner state detection module is provided with a first multiplexing selection control end and a power-on reset control end, the power-on reset control end is used for receiving a power-on reset signal sent by a processor core of the microprocessor, and the burner state detection module is used for determining the communication state of the burner and the burner interface system according to the power-on reset signal and outputting a first multiplexing selection signal according to the communication state;
the port multiplexing unit is provided with a first input end, a burning data output end, a multiplexing output end and a state detection input end; the first input end is used for connecting a general input/output port to receive data information sent by the burner; the multiplexing output end is used for connecting a chip built-in peripheral of the microprocessor; the state detection input end is used for receiving the first multiplexing selection signal output by the first multiplexing selection control end; the port multiplexing unit is used for selecting one of the burning data output end and the multiplexing output end to output the data information according to the first multiplexing selection signal;
the universal serial bus interface module is provided with a first connecting end and a second connecting end, and the first connecting end is connected with the burning data output end and is used for carrying out data communication with the burner;
the main controller module is provided with a third connecting end, a fourth connecting end and a second multiplexing selection control end, and the third connecting end is connected with the second connecting end; the main controller module is used for determining the decryption state of the memory according to the data information and executing a burning step control strategy on the memory according to the decryption state; the burning step control strategy at least comprises one of erasing operation, programming operation and reading operation;
the memory driving module is provided with a first driving connecting end, a second driving connecting end, a multiplexing driving end and a first multiplexing selection input end, and the first driving connecting end is connected with the fourth connecting end; the second driving connecting end is connected with the memory; the multiplexing driving end is used for connecting the processor core; the first multiplexing selection input end is used for receiving a second multiplexing selection signal sent by the second multiplexing selection control end, and the second multiplexing selection signal is obtained according to the decryption state; the memory driving module is used for executing the burning step control strategy on the memory so as to complete the burning of the memory.
The burning interface system according to the embodiment of the invention at least has the following technical effects: the method comprises the steps that firstly, the communication state of a burner and a burner interface system can be determined through a burner state detection module, a first multiplexing selection signal is output according to the communication state, a port multiplexing unit can select one of a burning data output end and a multiplexing output end according to the first multiplexing selection signal to output data information sent by the burner, after the data information is input into a main controller module, the main controller module can determine the decryption state of a memory according to the data information and select a burning step control strategy for the memory according to the decryption state, and finally, a memory driving module drives the memory to execute the burning step control strategy according to the decryption state so as to complete burning of the memory. The burning interface system of the embodiment of the invention realizes the purposes of high burning speed and simple burning process and solves the problems of complex burning process, low speed and high hardware cost.
According to some embodiments of the invention, the burner state detection module comprises:
the time window counter is used for receiving the power-on reset signal sent by the processor core and then outputting a high-level window pulse signal;
the interface handshake communication detector is used for determining the communication state of the burner and the burning interface system according to the high-level window pulse signal and outputting a state detection signal according to the communication state;
and the OR gate device is used for outputting the first multiplexing selection signal according to the high-level window pulse signal and the state detection signal.
According to some embodiments of the invention, the port multiplexing unit comprises:
the two first port multiplexers are provided with multiplexing input ends, second enabling selection input ends, first multiplexing selection ends and second multiplexing selection ends, the two multiplexing input ends are connected with the two universal input/output ports in a one-to-one correspondence mode, the two second enabling selection input ends are respectively connected with the burner state detection module, the two first multiplexing selection ends are respectively connected with the universal serial bus interface module, and the two second multiplexing selection ends are all used for being connected with the chip built-in peripheral of the microprocessor.
According to some embodiments of the invention, the master controller module comprises:
the command parser is used for parsing the data information; the data information comprises decryption information and burning information;
the memory encryption and decryption device is used for determining the decryption state of the memory according to the analysis result of the command analyzer on the decryption information;
the state register is used for storing state information and error information of each step in a burning process, the state information is used for representing the end marks of the erasing operation, the programming operation and the reading operation and the decryption state, and the error information is used for representing address addressing errors, data programming length errors and/or word width errors in the burning process;
and the memory controller is used for analyzing the burning information and executing the burning step control strategy on the memory to finish burning the memory after the decryption state representation is decrypted successfully.
According to some embodiments of the invention, the memory driver module comprises:
the bus controller module is connected with the main controller module and used for executing the burning step control strategy on the memory so as to complete the burning of the memory;
and the second port multiplexer is provided with a controller control end, a burning driving end connected with the bus controller module, a second multiplexing selection signal receiving end connected with the main controller module, and a memory connecting end connected with the memory, wherein the controller control end is used for connecting the processor core of the microprocessor.
A microprocessor according to an embodiment of the second aspect of the invention, comprising:
the burning interface system of the embodiment of the first aspect;
the memory is connected with the second driving connecting end of the memory driving module;
the chip built-in peripheral is connected with the multiplexing output end of the port multiplexing unit;
and the processor core is respectively connected with the chip built-in peripheral and the multiplexing driving end of the memory driving module.
The microprocessor according to the embodiment of the invention has at least the following technical effects: the burning interface system is integrated in a microprocessor, a general input/output port of the microprocessor can be used by the burning interface system and can also be used by a chip built-in peripheral in the microprocessor through a port multiplexing unit, the mutual influence is avoided, the normal work of the chip built-in peripheral is not influenced, and the burning interface system does not occupy port resources of the microprocessor. In addition, the memory can be connected with the memory driving module to burn the memory and update the stored data in the memory, and can also be accessed by the processor core of the microprocessor through the memory driving module to execute the program content stored in the memory, thereby achieving the purpose of multiplexing the chip port. The microprocessor of the embodiment of the invention does not need a ROM which can be solidified and started, larger internal RAM resources and a relevant communication interface peripheral, thereby solving the problems of high complexity of chip design and large chip area.
The burning method according to the third aspect of the present invention is applied to the burning interface system according to the first aspect of the present invention, and includes the following steps:
determining the communication state of the burner and the burning interface system;
receiving the data information sent by the burner according to the communication state;
determining the decryption state of the memory according to the data information, and executing the burning step control strategy on the memory according to the decryption state so as to complete burning of the memory; the burning step control strategy at least comprises one of the erasing operation, the programming operation and the reading operation.
The burning method according to the embodiment of the invention at least has the following technical effects: firstly, the communication state of a burner and a burning interface system is determined, data information sent by the burner is received according to the communication state, then the decryption state of a memory is determined according to the data information, and a burning step control strategy of the memory is executed according to the decryption state so as to complete burning of the memory. The burning method of the embodiment of the invention has simple burning process and high burning speed, does not need the participation of a microprocessor, an upper computer and a simulator, has high data storage safety of a memory, can meet the market demand, and solves the problems of complex burning process, low speed and high burning cost.
According to some embodiments of the invention, the receiving the data information sent by the burner according to the communication state comprises the following steps:
if the communication state represents that the burner and the burning interface system are successfully handshake, the data information sent by the burner is received and transmitted to the universal serial bus interface module through the burning data output end;
and if the communication state represents that the programmer fails to handshake with the programming interface system, the programming interface system is connected with the chip built-in peripheral through the multiplexing output end.
According to some embodiments of the present invention, the memory driving module comprises a bus controller module and a second port multiplexer, the bus controller module is connected to the main controller module, the second port multiplexer has a controller control end, a programming driving end connected to the bus controller module, a second multiplexing selection signal receiving end connected to the main controller module, and a memory connecting end connected to the memory, the controller control end is used for connecting to the processor core of the microprocessor;
the executing the burning step control strategy to the memory according to the decryption state comprises the following steps:
receiving, by the second multiplexing selection signal receiving terminal, the second multiplexing selection signal transmitted by the main controller module;
if the second multiplexing selection signal represents that the memory is decrypted successfully, enabling the burning drive end, and executing the burning step control strategy on the memory to complete the burning of the memory;
and enabling the controller control end if the second multiplexing selection signal represents that decryption fails, and connecting the processor core of the microprocessor through the controller control end so as to enable the processor core to communicate with the memory.
According to some embodiments of the invention, further comprising the steps of:
reading memory address data corresponding to the program operation from the memory;
confirming the data verification state of the memory address data and the programming data; the data verification state is used for representing the consistency of the memory address data and the programming data;
and if the data verification state represents that the address data of the memory is the same as the programming data, ending the burning of the memory.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a system block diagram of a burn interface system in accordance with an embodiment of the present invention;
FIG. 2 is a block diagram of a status detection module of the burner according to the embodiment of the present invention;
FIG. 3 is a system block diagram of a microprocessor of an embodiment of the present invention;
FIG. 4 is a flowchart of a burning method according to an embodiment of the present invention.
Reference numerals:
a burner state detection module 100;
a port multiplexing unit 200, a first port multiplexer 210;
a universal serial bus interface module 300;
a main controller module 400;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the directional descriptions, such as the directions of upper, lower, front, rear, left, right, etc., are referred to only for convenience of describing the present invention and for simplicity of description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the essential numbers, and greater than, less than, etc. are understood as including the essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
A burn interface system according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 3.
The burning interface system according to the embodiment of the invention comprises: the device comprises a burner state detection module 100, a port multiplexing unit 200, a universal serial bus interface module 300, a main controller module 400 and a memory driving module 500.
The recorder state detection module 100 is provided with a first multiplexing selection control end and a power-on reset control end, the power-on reset control end is used for receiving a power-on reset signal sent by a processor core of the microprocessor, and the recorder state detection module is used for determining the communication state of the recorder and the recording interface system according to the power-on reset signal and outputting a first multiplexing selection signal according to the communication state;
a port multiplexing unit 200 having a first input terminal, a burst data output terminal, a multiplexing output terminal, and a state detection input terminal; the first input end is used for connecting the general input/output port to receive the data information sent by the burner; the multiplexing output end is used for connecting a chip built-in peripheral of the microprocessor; the state detection input end is used for receiving a first multiplexing selection signal output by the first multiplexing selection control end; the port multiplexing unit 200 is configured to select one of the burst data output end and the multiplexing output end to output data information according to the first multiplexing selection signal;
the universal serial bus interface module 300 is provided with a first connecting end and a second connecting end, wherein the first connecting end is connected with the burning data output end and is used for carrying out data communication with the burner;
a main controller module 400 having a third connection terminal, a fourth connection terminal and a second multiplexing selection control terminal, the third connection terminal being connected to the second connection terminal; the main controller module 400 is configured to determine a decryption state of the memory according to the data information, and execute a burning step control policy on the memory according to the decryption state; the burning step control strategy at least comprises one of erasing operation, programming operation and reading operation;
the memory driving module 500 is provided with a first driving connecting end, a second driving connecting end, a multiplexing driving end and a first multiplexing selection input end, wherein the first driving connecting end is connected with the fourth connecting end; the second driving connecting end is connected with the memory; the multiplexing driving end is used for connecting the processor core; the first multiplexing selection input end is used for receiving a second multiplexing selection signal sent by the second multiplexing selection control end, and the second multiplexing selection signal is obtained according to a decryption state; the memory driving module 500 is used for executing a burning step control strategy on the memory to complete the burning of the memory.
Referring to fig. 1 to 3, the main function of the burner state detection module 100 is that after the microprocessor is powered on and reset, the processor core of the microprocessor sends a power-on reset signal to the power-on reset control terminal of the burner state detection module 100 through the RSTN port, the burner state detection module 100 sets a detection time window, detects whether the burner is in a working state and whether handshake communication with the burner interface system is successful in the detection time window, and outputs a first multiplexing selection signal to the state detection input terminal of the port multiplexing unit 200. The port multiplexing unit 200 is connected to general purpose input/output ports (such as GPIO0 and GPIO1 shown in fig. 1) through a first input terminal, so as to receive data information sent by the burner; when the first multiplexing selection signal output by the burner state detection module 100 is in an active state, the port multiplexing unit 200 selects the burning data output end to output data information, and disables the multiplexing output end; when the first multiplexing selection signal output by the burner state detection module 100 is in an invalid state, the port multiplexing unit 200 disables the burning data output terminal and selects the multiplexing output terminal to be connected to the chip built-in peripheral of the microprocessor, thereby achieving the purpose of multiplexing the chip port.
It should be noted that the first multiplexing selection signal is in an effective state when being powered on and reset, the state after the detection time window is ended depends on whether the handshake between the burner and the burning interface system is successful, when the burner successfully communicates with the burning interface system in the detection time window, the first multiplexing selection signal remains in the effective state, and if the handshake fails, the first multiplexing selection signal is in an invalid state.
The usb interface module 300 mainly performs data communication with the burner, including receiving and sending data, and the usb interface module 300 can transmit the received data information to the main controller module 400 and also send the state information of the burner interface system and the storage content of the memory to the external burner. In some embodiments, the communication protocol adopts an I2C protocol, except that the communication port adopts an open-drain structure, while the communication port adopts a general input/output port, which can be shared with the on-chip peripheral of the microprocessor and does not affect the normal operation of the on-chip peripheral.
The main function of the main controller module 400 is to control the burning process of the burning interface system, including encryption and decryption of the memory, command reception and analysis, control of the burning step, control of the entire burning process, and error detection and state storage of the burning interface system. After the main controller module 400 analyzes the decryption instruction in the data information, the main controller module 400 receives the decryption key data, verifies the correctness of the decryption key data to determine the decryption state of the memory, and after the decryption state is determined, the main controller module 400 sends a second multiplexing selection signal to the first multiplexing selection input end of the memory driving module 500; when the second multiplexing selection signal is in an active state, the memory driving module 500 executes a burning step control strategy to the memory to complete the burning of the memory, wherein the burning step control strategy at least includes one of an erasing operation, a programming operation and a reading operation.
It should be noted that, when the second multiplexing selection signal indicates that the memory is successfully decrypted, the second multiplexing selection signal is in an active state, otherwise, the second multiplexing selection signal is in an inactive state, and at this time, the memory driving module 500 does not execute the burning step control strategy on the memory, but connects the processor core of the microprocessor through the multiplexing driving end of the memory driving module 500, so that the processor core can directly access the memory to achieve the purpose of multiplexing the chip port. The present invention is mainly applied to a nonvolatile memory, but is not to be construed as limiting the present invention.
Referring to fig. 1, it should be noted that the burning interface system according to the embodiment of the present invention needs to send power-on reset signals to the burner state detection module 100, the universal serial bus interface module 300, the main controller module 400, and the memory driving module 500 through the RSTN port, respectively, before the burning interface system starts to operate normally.
According to the burning interface system of the embodiment of the invention, firstly, the communication state of the burner and the burning interface system can be determined through the burner state detection module 100, and a first multiplexing selection signal is output according to the communication state, the port multiplexing unit 200 can select one of a burning data output end and a multiplexing output end according to the first multiplexing selection signal to output data information sent by the burner, after the data information is input to the main controller module 400, the main controller module 400 can determine the decryption state of the memory according to the data information, and select the burning step control strategy for the memory according to the decryption state, and finally, the memory driving module 500 drives the memory to execute the burning step control strategy according to the decryption state to complete the burning for the memory. The burning interface system of the embodiment of the invention realizes the purposes of high burning speed and simple burning process and solves the problems of complex burning process, low speed and high hardware cost.
In some embodiments of the present invention, referring to fig. 1 and 2, the burner state detection module 100 includes: a time window counter, an interface handshake communication detector, or a gate device. The time window counter is used for receiving the power-on reset signal sent by the processor core and then outputting a high-level window pulse signal; the interface handshake communication detector is used for determining the communication state of the burner and the burning interface system according to the high-level window pulse signal and outputting a state detection signal according to the communication state; and an OR gate device for outputting a first multiplexing selection signal according to the high level window pulse signal and the state detection signal.
As shown in fig. 1, after the microprocessor chip is powered on and reset, the processor core of the microprocessor sends a power-on reset signal to the input end of the time window counter through the RSTN port, the time window counter receives the power-on reset signal and outputs a high-level window pulse signal, and the high-level window pulse signal is respectively sent to the input end of the interface handshake communication detector and one input end of the or gate device, and the interface handshake communication detector repeatedly detects the communication state of the recorder and the recording interface system within the window pulse time and outputs a state detection signal to the other input end of the or gate device. When the burner and the burning interface system are in handshake communication successfully, the state detection signal is a high level signal, and the first multiplexing selection signal output by the OR gate device is in an effective state.
Here, it should be noted that the or gate device is a same or gate device, and when signals input by two input ends of the or gate device are high level signals at the same time, that is, after the microprocessor chip is powered on and reset, and the burner interface system successfully perform handshake communication, a first multiplexing selection signal output by the same or gate device is a high level signal, which indicates that the first multiplexing selection signal is in an effective state; when the handshake between the burner and the burning interface system fails, the state detection signal is a low level signal, and the first multiplexing selection signal output by the XNOR gate device is a low level signal, which indicates that the first multiplexing selection signal is in an invalid state. In addition, it should be noted that the window pulse time of the time window counter needs to be longer than the time for the interface handshake communication detector to detect the communication state between the burner and the burner interface system.
In some embodiments of the present invention, referring to fig. 1 to 3, the port multiplexing unit 200 includes two first port multiplexers 210, each first port multiplexer 210 has a multiplexing input terminal, a second enable selection input terminal, a first multiplexing selection terminal, and a second multiplexing selection terminal, the two multiplexing input terminals are connected to two general purpose input/output ports in a one-to-one correspondence manner, the two second enable selection input terminals are respectively connected to the burner status detection module 100, the two first multiplexing selection terminals 3 and 4 are respectively connected to the usb interface module 300, and the two second multiplexing selection terminals 1 and 2 are both used for connecting to an on-chip peripheral of the microprocessor. Two second enable selection input ends of the two first port multiplexers 210 receive the first multiplexing selection signal sent by the burner state detection module 100; if the first multiplexing selection signal is in an active state, the two multiplexing input ends are connected to the two general input/output ports to receive the data information sent by the burner, the two first port multiplexers 210 disable the two second multiplexing selection ends 1 and 2, and select the two first multiplexing selection ends 3 and 4 to output the data information to the universal serial bus interface module 300; if the first multiplexing selection signal is in an invalid state, the two first port multiplexers 210 disable the two first multiplexing selection terminals 3 and 4, and select the two second multiplexing selection terminals 1 and 2 to be connected to the chip built-in peripheral of the microprocessor, so that the two general input/output ports are used by the chip built-in peripheral, the purpose of multiplexing the chip ports is achieved, and the normal work of the chip built-in peripheral cannot be influenced.
In some embodiments of the present invention, referring to FIG. 1, a master controller module 400 includes: command parser, memory encryption and decryption device, status register, and memory controller. The command parser is used for parsing the data information; the data information comprises decryption information and burning information; the memory encryption and decryption device is used for determining the decryption state of the memory according to the analysis result of the command analyzer on the decryption information; the state register is used for storing state information and error information of each step in the burning process, the state information is used for representing end marks of erasing operation, programming operation and reading operation and a decryption state, and the error information is used for representing address addressing errors, data programming length errors and/or word width errors in the burning process; and the memory controller is used for analyzing the burning information and executing a burning step control strategy on the memory after the decryption state represents that the decryption is successful so as to complete the burning of the memory.
The command parser is used for parsing the data information; the data information comprises decryption information and burning information; the memory encryption and decryption device is used for analyzing the decryption instruction according to the command analyzer and extracting decryption key data so as to determine the decryption state of the memory; the state register is used for storing state information and error information of each step in the burning process, the state information is used for representing end marks of erasing operation, programming operation and reading operation and a decryption state, and the error information is used for representing address addressing errors, data programming length errors and/or word width errors in the burning process; and the memory controller is used for analyzing the burning command according to the command analyzer after the decryption state representation is successfully decrypted and executing a burning step control strategy of the memory so as to write the programming data into the memory.
The command parser parses the received data information sent by the burner, the decrypted command is parsed out, then the decryption key data is extracted, and the memory encryption and decryption device verifies the correctness of the decryption key data so as to determine the decryption state of the memory and store the decryption state in the state register. The burner reads the decryption state in the state register, the command analyzer analyzes the received data information after the decryption is determined to be successful, and the memory controller executes the burning step control strategy of the memory after the command analyzer analyzes that the command is a burning command. The burning step control strategy at least comprises one of erasing operation, programming operation and reading operation, after the erasing operation is finished, the erasing end zone bit in the state register is automatically marked to be in an effective state, the burner reads the value of the erasing end zone bit in the state register, and if the erasing end zone bit is in the effective state, the programming operation is executed to write the programming data into the memory. The status register stores the status information and the error information of each step in the burning process, and the burner can read the status information and the error information in the status register, so that the purpose of monitoring the burning process can be realized, and the burning process condition can be timely known.
It should be noted that, after determining that the decryption is successful, the memory controller sends a second multiplexing selection signal to the memory driving module 500, and the memory encryptor automatically reads the encryption key data pre-stored in the memory after the microprocessor is powered on and reset, and compares the extracted decryption key data with the encryption key data; if the comparison result shows that the two signals are not consistent, the memory is in an encrypted state at this time, that is, the second multiplexing selection signal is in an invalid state, and at this time, the memory driving module 500 selects the processor core with the multiplexing driving end connected to the microprocessor, so that the processor core can directly access the memory. If the comparison result shows that the first multiplexing selection signal and the second multiplexing selection signal are consistent, the second multiplexing selection signal is set to be in an effective state, and the memory controller executes a burning step control strategy on the memory to complete burning of the memory. The arrangement of the memory encryption and decryption device improves the data storage safety of the memory.
In some embodiments of the present invention, referring to fig. 1-3, the memory driver module 500 includes: a bus controller module 510, a second port multiplexer 520. The bus controller module 510 is connected to the main controller module 400, and is configured to execute a burning step control policy on the memory to complete burning of the memory; and the second port multiplexer 520 is provided with a controller control end 5, a burning driving end 6 connected with the bus controller module 510, a second multiplexing selection signal receiving end connected with the main controller module 400, and a memory connecting end connected with the memory, wherein the controller control end 5 is used for connecting a processor core of the microprocessor.
The main controller module 400 sends the second multiplexing selection signal to the second multiplexing selection signal receiving end of the second port multiplexer 520, and if the memory decryption is successful, the second multiplexing selection signal is set to be in an active state, the bus controller module 510 accesses the memory through the recording driving end 6 and the memory connecting end of the second port multiplexer 520, and drives the memory to execute the recording step control strategy, so as to complete the recording of the memory. If the memory is not decrypted successfully, the second multiplexing selection signal is set to be in an invalid state, the second port multiplexer 520 disables the burning driving end 6, and selects the controller control end 5 to be connected to the processor core of the microprocessor, so that the processor core can directly access the memory to achieve the purpose of multiplexing the chip port.
A microprocessor according to an embodiment of the second aspect of the invention is described below with reference to fig. 1 to 3.
A microprocessor according to an embodiment of the present invention includes: the system comprises a burning interface system, a memory, a chip built-in peripheral and a processor core. A memory connected to the second driving connection terminal of the memory driving module 500; the chip is internally provided with a peripheral which is connected with the multiplexing output end of the port multiplexing unit 200; and the processor core is respectively connected with the chip built-in peripheral and the multiplexing driving end of the memory driving module 500.
If the burner fails to handshake with the burning interface system, the general input/output port is connected to the first input terminal of the port multiplexing unit 200, and the port multiplexing unit 200 selects the multiplexing output terminal to connect to the chip built-in peripheral and disables the burning data output terminal, so that the general input/output port can be used by the chip built-in peripheral. In the memory decryption process of the burning process, if the memory is not decrypted successfully, the memory driving module selects the multiplexing driving end to be connected to the processor core, so that the processor core accesses the memory through the second driving connecting end of the memory driving module to achieve the purpose of multiplexing the chip port.
According to the microprocessor of the embodiment of the invention, the burning interface system is integrated in one microprocessor, two general input/output ports (such as GPIO0 and GPIO1 shown in figure 1) of the microprocessor can be used by the burning interface system and chip built-in peripheral equipment in the microprocessor, and cannot affect each other and normal work of the chip built-in peripheral equipment, and the burning interface system does not occupy port resources of the microprocessor. In addition, the memory can be accessed by the burning interface system to burn the memory and update the stored data in the memory, and can also be accessed by the processor core of the microprocessor to execute the program content stored in the memory, thereby achieving the purpose of multiplexing the chip port. The microprocessor of the embodiment of the invention does not need a ROM which can be solidified and started, larger internal RAM resources and a relevant communication interface peripheral, thereby solving the problems of high complexity of chip design and large chip area.
A burning method according to a third aspect of the present invention is described below with reference to fig. 1 to 4.
The burning method according to the embodiment of the invention comprises the following steps:
determining the communication state of the burner and the burning interface system;
receiving data information sent by the burner according to the communication state;
determining the decryption state of the memory according to the data information, and executing a burning step control strategy on the memory according to the decryption state so as to complete burning of the memory; the burning step control strategy at least comprises one of an erasing operation, a programming operation and a reading operation.
After the microprocessor is powered on and reset, a detection time window is set, whether the burner is in a working state and whether handshake communication with the burning interface system is successful or not is detected in the detection time window, if the handshake is successful, the data information sent by the burner is received and analyzed, after a decryption instruction in the data information is analyzed, decryption key data is extracted, the correctness of the decryption key data is verified to determine the decryption state of the memory, and after the decryption is successful, a burning step control strategy is executed on the memory to complete the burning of the memory; if the programmer fails to handshake with the programming interface system, the port multiplexing unit 200 selects the multiplexing output port to connect to the chip built-in peripheral of the microprocessor, so that the general input/output port is used by the chip built-in peripheral, and the programming data output port is disabled.
It should be noted that, if decryption fails, the second port multiplexer 520 selects the controller control end 5 to be connected to the processor core of the microprocessor, so that the processor core can directly access the memory, and the programming drive end 6 is disabled, so as to achieve the purpose of multiplexing the chip port.
According to the burning method of the embodiment of the invention, firstly, the communication state of the burner and the burning interface system is determined, the data information sent by the burner is received according to the communication state, then the decryption state of the memory is determined according to the data information, and the burning step control strategy of the memory is executed according to the decryption state so as to complete the burning of the memory. The burning method of the embodiment of the invention has simple burning process and high burning speed, does not need the participation of a microprocessor, an upper computer and a simulator, has high data storage safety of a memory, can meet the market demand, and solves the problems of complex burning process, low speed and high burning cost.
In some embodiments of the present invention, referring to fig. 1 to 3, receiving data information sent by a burner according to a communication state includes the following steps:
if the communication state represents that the burner and the burning interface system are successfully handshake, the data information sent by the burner is received and transmitted to the universal serial bus interface module 300 through the burning data output end;
and if the communication state represents that the programmer and the programming interface system fail to handshake, the chip built-in peripheral is connected through the multiplexing output end.
After the microprocessor is powered on and reset, a detection time window is set, whether the burner is in a working state and whether the burner is successfully in handshake communication with the burning interface system is detected in the detection time window, when the burner is successfully in handshake communication with the burning interface system, a first multiplexing selection signal is sent to a state detection input end of the port multiplexing unit 200, the first multiplexing selection signal is in an effective state, a first input end of the port multiplexing unit 200 is connected with a universal input/output port to receive data information sent by the burner, and the port multiplexing unit 200 selects a burning data output end to output the data information to the universal serial bus interface module 300 and disables the multiplexing output end; when the handshake between the burner and the burning interface system fails, the first multiplexing selection signal is in an invalid state, the port multiplexing unit 200 selects the multiplexing output end to be connected to the chip built-in peripheral of the microprocessor, and disables the burning data output end, so as to achieve the purpose of multiplexing the chip port.
In some embodiments of the present invention, referring to fig. 1 and 3, the memory driving module 500 includes a bus controller module 510 and a second port multiplexer 520, the bus controller module 510 is connected to the main controller module 400, the second port multiplexer 520 has a controller control end 5, a burning driving end 6 connected to the bus controller module 510, a second multiplexing selection signal receiving end connected to the main controller module 400, and a memory connecting end connected to the memory, the controller control end 5 is used for connecting to a processor core of the microprocessor;
the method for executing the burning step control strategy on the memory according to the decryption state comprises the following steps:
receiving a second multiplexing selection signal transmitted by the main controller module 400 through a second multiplexing selection signal receiving terminal;
if the second multiplexing selection signal represents that the decryption of the memory is successful, enabling the burning driving end 6, and driving the memory to execute a burning step control strategy so as to complete the burning of the memory;
if the second multiplexing selection signal represents that the decryption fails, the controller control end 5 is enabled, and the controller control end 5 is connected with a processor core of the microprocessor, so that the processor core communicates with the memory.
The main controller module 400 sends a second multiplexing selection signal to a second multiplexing selection signal receiving end of the second port multiplexer 520, if the second multiplexing selection signal indicates that the memory decryption is successful, the burning driving end 6 of the second port multiplexer 520 is enabled, and the controller control end 5 is disabled, the bus controller module 510 accesses the memory through the burning driving end 6 and the memory connecting end, and drives the memory to execute a burning step control strategy, so as to complete the burning of the memory. If the second multiplexing selection signal represents that the decryption fails, the controller control end 5 of the second port multiplexer 520 is enabled to be connected to the processor core of the microprocessor, and the burning drive end 6 is disabled, so that the processor core can directly access the memory to achieve the purpose of multiplexing the chip port.
In some embodiments of the invention, further comprising the steps of:
reading memory address data corresponding to a program operation from a memory;
confirming the data verification state of the memory address data and the programming data; the data verification state is used for representing the consistency of the address data and the programming data of the memory;
if the data verification state represents that the address data of the memory is the same as the programming data, the burning of the memory is finished.
After the programming operation is finished, executing a reading operation to read the memory address data corresponding to the programming operation in the memory, then comparing the memory address data with the programming data, if the data comparison result is inconsistent, executing an erasing operation to erase the memory address data in the memory, and then re-executing the programming operation to write the programming data into the memory, or directly executing the erasing operation to write the programming data into the memory to overwrite the original memory address data. If the data comparison result is consistent, the burning of the memory is finished. The data verification process improves the accuracy of data burning of the memory.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the embodiments, and those skilled in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A burn interface system, comprising:
the device comprises a burner state detection module, a microprocessor and a control module, wherein the burner state detection module is provided with a first multiplexing selection control end and a power-on reset control end, the power-on reset control end is used for receiving a power-on reset signal sent by a processor core of a microprocessor, and the burner state detection module is used for determining the communication state of a burner and the burner interface system according to the power-on reset signal and outputting a first multiplexing selection signal according to the communication state;
the port multiplexing unit is provided with a first input end, a burning data output end, a multiplexing output end and a state detection input end; the first input end is used for connecting a general input/output port to receive data information sent by the burner; the multiplexing output end is used for connecting a chip built-in peripheral of the microprocessor; the state detection input end is used for receiving the first multiplexing selection signal output by the first multiplexing selection control end; the port multiplexing unit is used for selecting one of the burning data output end and the multiplexing output end to output the data information according to the first multiplexing selection signal;
the universal serial bus interface module is provided with a first connecting end and a second connecting end, and the first connecting end is connected with the burning data output end and is used for carrying out data communication with the burner;
the main controller module is provided with a third connecting end, a fourth connecting end and a second multiplexing selection control end, and the third connecting end is connected with the second connecting end; the main controller module is used for determining the decryption state of the memory according to the data information and executing a burning step control strategy on the memory according to the decryption state; the burning step control strategy at least comprises one of erasing operation, programming operation and reading operation;
the memory driving module is provided with a first driving connecting end, a second driving connecting end, a multiplexing driving end and a first multiplexing selection input end, and the first driving connecting end is connected with the fourth connecting end; the second driving connecting end is connected with the memory; the multiplexing driving end is used for connecting the processor core; the first multiplexing selection input end is used for receiving a second multiplexing selection signal sent by the second multiplexing selection control end, and the second multiplexing selection signal is obtained according to the decryption state; the memory driving module is used for executing the burning step control strategy on the memory so as to complete the burning of the memory.
2. The burning interface system of claim 1, wherein the burner state detection module comprises:
the time window counter is used for receiving the power-on reset signal sent by the processor core and then outputting a high-level window pulse signal;
the interface handshake communication detector is used for determining the communication state of the burner and the burning interface system according to the high-level window pulse signal and outputting a state detection signal according to the communication state;
or gate device, which is used to output the first multiplexing selection signal according to the high level window pulse signal and the state detection signal.
3. The burn interface system of claim 2 wherein the port multiplexing unit comprises:
the two first port multiplexers are provided with multiplexing input ends, second enabling selection input ends, first multiplexing selection ends and second multiplexing selection ends, the two multiplexing input ends are connected with the two universal input/output ports in a one-to-one correspondence mode, the two second enabling selection input ends are respectively connected with the burner state detection module, the two first multiplexing selection ends are respectively connected with the universal serial bus interface module, and the two second multiplexing selection ends are all used for being connected with the chip built-in peripheral of the microprocessor.
4. The burn interface system of claim 1 wherein the host controller module comprises:
the command parser is used for parsing the data information; the data information comprises decryption information and burning information;
the memory encryption and decryption device is used for determining the decryption state of the memory according to the analysis result of the command analyzer on the decryption information;
the state register is used for storing state information and error information of each step in a burning process, the state information is used for representing the end marks of the erasing operation, the programming operation and the reading operation and the decryption state, and the error information is used for representing address addressing errors, data programming length errors and/or word width errors in the burning process;
and the memory controller is used for analyzing the burning information and executing the burning step control strategy on the memory to finish burning the memory after the decryption state representation is decrypted successfully.
5. The burning interface system of claim 1, wherein the memory driving module comprises:
the bus controller module is connected with the main controller module and used for executing the burning step control strategy on the memory so as to complete the burning of the memory;
and the second port multiplexer is provided with a controller control end, a burning driving end connected with the bus controller module, a second multiplexing selection signal receiving end connected with the main controller module, and a memory connecting end connected with the memory, wherein the controller control end is used for connecting the processor core of the microprocessor.
6. A microprocessor, comprising:
the burning interface system of any of claims 1 to 5;
the memory is connected with the second driving connecting end of the memory driving module;
the chip built-in peripheral is connected with the multiplexing output end of the port multiplexing unit;
and the processor core is respectively connected with the chip built-in peripheral and the multiplexing driving end of the memory driving module.
7. A burning method applied to the burning interface system as claimed in any one of claims 1 to 5, the burning method comprising the steps of:
determining the communication state of the burner and the burning interface system;
receiving the data information sent by the burner according to the communication state;
determining the decryption state of the memory according to the data information, and executing the burning step control strategy on the memory according to the decryption state so as to complete burning of the memory; the burning step control strategy at least comprises one of the erasing operation, the programming operation and the reading operation.
8. The burning method of claim 7, wherein the receiving the data information sent by the burner according to the communication status comprises:
if the communication state represents that the burner and the burning interface system are successfully handshake, the data information sent by the burner is received and transmitted to the universal serial bus interface module through the burning data output end;
and if the communication state represents that the programmer fails to handshake with the programming interface system, the programming interface system is connected with the chip built-in peripheral through the multiplexing output end.
9. The burning method of claim 7, wherein the memory driving module comprises a bus controller module and a second port multiplexer, the bus controller module is connected to the main controller module, the second port multiplexer has a controller control end, a burning driving end connected to the bus controller module, a second multiplexing selection signal receiving end connected to the main controller module, and a memory connecting end connected to the memory, the controller control end is used for connecting to the processor core of the microprocessor;
the executing the burning step control strategy to the memory according to the decryption state comprises the following steps:
receiving, by the second multiplexing selection signal receiving terminal, the second multiplexing selection signal transmitted by the main controller module;
if the second multiplexing selection signal represents that the memory is decrypted successfully, enabling the burning drive end, and executing the burning step control strategy on the memory to complete the burning of the memory;
and enabling the controller control end if the second multiplexing selection signal represents that decryption fails, and connecting the processor core of the microprocessor through the controller control end so as to enable the processor core to communicate with the memory.
10. The burning method of claim 7, further comprising the steps of:
reading memory address data corresponding to the program operation from the memory;
confirming the data verification state of the memory address data and the programming data; the data verification state is used for representing the consistency of the memory address data and the programming data;
and if the data verification state represents that the address data of the memory is the same as the programming data, ending the burning of the memory.
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