CN107168904A - A kind of TCM control systems and method based on BMCSPI interfaces - Google Patents
A kind of TCM control systems and method based on BMCSPI interfaces Download PDFInfo
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- CN107168904A CN107168904A CN201710326170.2A CN201710326170A CN107168904A CN 107168904 A CN107168904 A CN 107168904A CN 201710326170 A CN201710326170 A CN 201710326170A CN 107168904 A CN107168904 A CN 107168904A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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Abstract
The present invention provides a kind of TCM control systems and method based on BMCSPI interfaces, and BMC module is provided with arm processor, and TCM controllers are integrated on BMC module, and TCM controllers are connected with arm processor；TCM modules are connected with TCM controllers.Interacted in BMC module using TCM controllers with TCM modules, carry out the measurement of integrality to each functional unit using TCM modules during BMC module startup optimization, ensure the integrality of program and be not implanted malicious code, so as to ensure that the credible of system platform performing environment.The present invention realizes the control to TCM modules, and security hardening is carried out to BMC module.TCM controllers use SPI interface, are designed using Hardware Description Language VHDL, and the arm processor in BMC module is connected to by AMBA buses.
Description
Technical field
The present invention relates to BMC fields, more particularly to a kind of TCM control systems and method based on BMCSPI interfaces.
Background technology
BMC is the baseboard management controller on server master board, and it is to utilize virtual keyboard, interface, mouse, electricity that it, which is acted on,
Source etc. provides remote management capability for server.User using BMC monitor server physical features, such as each part temperature,
Voltage, fan operating state, power supply supply and cabinet invasion etc..BMC controls single as management relatively independent in server
Member has security risk in itself, for example, be implanted malicious code, and user is carrying out remote management using BMC to server in addition
When, may be improper because of security configuration, dedicated network, the low uneasy full operation of password complexity is such as not used, running is caused
In security risk.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, the present invention provides a kind of TCM controls system based on BMCSPI interfaces
System, including：BMC module, TCM controllers, TCM modules；
BMC module is provided with arm processor, and TCM controllers are integrated on BMC module, and TCM controllers connect with arm processor
Connect；TCM modules are connected with TCM controllers.
Preferably, TCM controllers are connected using SPI interface with TCM modules；TCM controllers utilize hardware VHDL languages
Speech, the arm processor of BMC module is connected to by AMBA buses.
Preferably, TCM controllers are provided with SCLK connection ends, SDO connection ends, SDI connection ends, CS connection ends；
TCM modules are provided with clk pins, WR pins, RD pins, SEL pins；
TCM controller SCLK connection ends are connected with the clk pins of TCM modules, as the clock output signal of spi bus,
Control TCM sequential；
TCM controller SDO connection ends are connected with the WR pins of TCM modules, as the data output signal of spi bus, to
TCM sends data；
TCM controller SDI connection ends are connected with the RD pins of TCM modules, as the data input signal of spi bus, from
TCM receives data；
TCM controller CS connection ends are connected with the SEL pins of TCM modules, as the enable signal of spi bus, for selecting
Middle TCM, makes data manipulation effective.
Preferably, TCM controllers include command register, length register, control register and RAM data shift zone；
The length of command register is 8bit, for depositing the different command parameter operated to TCM；Command parameter includes：
Reading and writing, erasing；
The length of length register is 8bit, and for depositing the data length for needing to read or write TCM, unit is word
Section；
The length of control register is 8bit, by setting the corresponding mode bit of control register to control the behaviour of TCM modules
Make.
Preferably, the 0th of control register is START, puts 1 expression and starts the start-up operation of TCM controllers, clear 0 represents
Stop the work of TCM controllers；1st is P_C, is set by TCM controllers, when RAM shift zones are converted into serially by parallel data
After the completion of data, P_C puts 1；2nd is C_P, is set by TCM controllers, when RAM shift zones are converted into parallel by serial data
After the completion of data, C_P puts 1；3rd is FINISH_FLAG, puts the completion of 1 expression data transfer, and clear 0 represents that data transfer is not complete
Into.
Preferably, RAM data shift zone sets the size in RAM areas to be 1KB (8bit*1024), and the RAM shift zones are used for handle
The data of TCM modules are sent to, serial data is converted into by parallel 8bit, TCM moulds are sent to will pass through SDO data wires
Block；When reading TCM module datas, the RAM shift zones can be the TCM serial datas composition read by SDI data wires simultaneously
Row data are read for arm processor.
Preferably, TCM controllers employ finite state machine method, including：Idle condition IDLE, start state BEGIN,
Write order word state WR_CMD, write length condition WR_LEN, write data mode WR_DATA, parallel-serial converter state P_Ccon, read
Data mode RD_DATA, string-and transition status C_Pcon and completion status FINISH.
A kind of TCM control methods based on BMCSPI interfaces, control method includes：
TCM controllers enter idle condition IDLE after S1, system power-on reset, wait the operation of arm processor next step；
After it is 1 that arm processor, which sets the 0th START of control register, TCM controllers are started working, and state machine enters BEGIN
State；
S2, in BEGIN states, TCM controllers make SCLK, SDO synchronous with sdi signal, and state machine enters write order afterwards
Word state WR_CMD；
S3, in WR_CMD states, TCM controllers write the command word for reading TCM modules to command register, afterwards state
Machine, which enters, writes length condition WR_LEN；
S4, the TCM module data length for needing to read to length register write-in in WR_LEN states, TCM controllers, it is single
Position is byte, and state machine, which enters, afterwards writes data mode WR_DATA；
S5, in WR_DATA states, the command word for reading TCM modules is write RAM areas by TCM controllers, and state machine enters afterwards
Enter parallel-serial converter state P_Ccon；
S6, in P_Ccon states, state machine is converted to the data in RAM areas by bit by the form inputted by byte
The mode of output, is exported by SDO signal line, and state machine enters wait state WAIT afterwards；
S7, in RD_DATA states, TCM controllers read the data of TCM modules by sdi signal line, and write the data to
RAM areas, enter string-and transition status C_Pcon afterwards；
S8, in C_Pcon states, the data in the RAM areas of reading are combined into byte format by state machine by bit hytes, in order to
Arm processor is read, afterwards into completion status FINISH；
S9, in FINISH states, the 0th START that TCM controllers remove control register is 0, sets control register
The complement mark position FINISH_FLAG of the 3rd is 1, and afterwards by arm processor adapter control, arm processor can be opened again
Dynamic TCM controllers are operated to TCM, and process is ibid.
As can be seen from the above technical solutions, the present invention has advantages below：
The present invention proposes TCM control systems and method based on BMCSPI interfaces, is controlled in BMC module using TCM
Device is interacted with TCM modules, and each functional unit is carried out completely using TCM modules during BMC module startup optimization
The measurement of property, it is ensured that the integrality of program and be not implanted malicious code, so that ensure that system platform performing environment can
Letter.The present invention realizes the control to TCM modules, and security hardening is carried out to BMC module.TCM controllers use SPI interface, utilize
Hardware Description Language VHDL is designed, and the arm processor in BMC module is connected to by AMBA buses.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, it will make simple to the required accompanying drawing used in description below
Introduce on ground, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill
For personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall schematic of the TCM control systems based on BMC；
The state machine transfer figure that Fig. 2 works for the TCM controllers of SPI interface；
Fig. 3 is the TCM control method flow charts based on BMCSPI interfaces.
Embodiment
, below will be with specific to enable goal of the invention, feature, the advantage of the present invention more obvious and understandable
Embodiment and accompanying drawing, the technical scheme that the present invention is protected are clearly and completely described, it is clear that implementation disclosed below
Example is only a part of embodiment of the invention, and not all embodiment.Based on the embodiment in this patent, the common skill in this area
All other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model of this patent protection
Enclose.
The present embodiment provides a kind of TCM control systems based on BMC, as shown in figure 1, including：BMC module 1, TCM controls
Device 2, TCM modules 3；BMC module 1 is provided with arm processor 4, and TCM controllers are integrated on BMC module 1, TCM controllers 2 and ARM
Processor 4 is connected；TCM modules 3 are connected with TCM controllers 2.
TCM is domestic credible password module, as the root of trust of system platform, possess symmetrical, asymmetric cryptographic algorithm,
The functions such as cryptographic Hash algorithm, key generation and storage.
TCM controllers 2 are connected using using SPI interface with TCM modules 3；TCM controllers 2 utilize hardware VHDL language, lead to
Cross the arm processor 4 that AMBA buses are connected to BMC module 1.
In the present embodiment, TCM controllers 2 are provided with SCLK connection ends, SDO connection ends, SDI connection ends, CS connection ends；
TCM modules are provided with clk pins, WR pins, RD pins, SEL pins；
TCM controller SCLK connection ends are connected with the clk pins of TCM modules, as the clock output signal of spi bus,
Control TCM sequential；TCM controller SDO connection ends are connected with the WR pins of TCM modules, are believed as the data output of spi bus
Number, send data to TCM；TCM controller SDI connection ends are connected with the RD pins of TCM modules, defeated as the data of spi bus
Enter signal, data are received from TCM；TCM controller CS connection ends are connected with the SEL pins of TCM modules, are used as making for spi bus
Energy signal, for choosing TCM, makes data manipulation effective.
TCM controllers 2 include command register, length register, control register and RAM data shift zone；
The length of command register is 8bit, for depositing the different command parameter operated to TCM；Command parameter includes：
Reading and writing, erasing；The length of length register is 8bit, and for depositing the data length for needing to read or write TCM, unit is
Byte；The length of control register is 8bit, by setting the corresponding mode bit of control register to control the operation of TCM modules.
The 0th of control register is START, puts 1 expression and starts the start-up operation of TCM controllers, clear 0 represents to stop TCM
Controller works；1st is P_C, is set by TCM controllers, is completed when RAM shift zones are converted into serial data by parallel data
Afterwards, P_C puts 1；2nd is C_P, is set by TCM controllers, is completed when RAM shift zones are converted into parallel data by serial data
Afterwards, C_P puts 1；3rd is FINISH_FLAG, puts the completion of 1 expression data transfer, and clear 0 represents that data transfer is not completed.
RAM data shift zone sets the size in RAM areas to be 1KB (8bit*1024), and the RAM shift zones are used for be sent
To the data of TCM modules, serial data is converted into by parallel 8bit, TCM modules are sent to will pass through SDO data wires；When
When reading TCM module datas, the TCM serial datas read by SDI data wires can be constituted parallel data by the RAM shift zones
Read for arm processor.
TCM controllers employ finite state machine method, as shown in Fig. 2 including：Idle condition IDLE, beginning state
BEGIN, write order word state WR_CMD, write length condition WR_LEN, write data mode WR_DATA, parallel-serial converter state P_
Ccon, reading data mode RD_DATA, string-and transition status C_Pcon and completion status FINISH.
The present invention also provides a kind of TCM control methods based on BMCSPI interfaces, as shown in figure 3, control method includes：
TCM controllers enter idle condition IDLE after S1, system power-on reset, wait the operation of arm processor next step；
After it is 1 that arm processor, which sets the 0th START of control register, TCM controllers are started working, and state machine enters BEGIN
State；
S2, in BEGIN states, TCM controllers make SCLK, SDO synchronous with sdi signal, and state machine enters write order afterwards
Word state WR_CMD；
S3, in WR_CMD states, TCM controllers write the command word for reading TCM modules to command register, afterwards state
Machine, which enters, writes length condition WR_LEN；
S4, the TCM module data length for needing to read to length register write-in in WR_LEN states, TCM controllers, it is single
Position is byte, and state machine, which enters, afterwards writes data mode WR_DATA；
S5, in WR_DATA states, the command word for reading TCM modules is write RAM areas by TCM controllers, and state machine enters afterwards
Enter parallel-serial converter state P_Ccon；
S6, in P_Ccon states, state machine is converted to the data in RAM areas by bit by the form inputted by byte
The mode of output, is exported by SDO signal line, and state machine enters wait state WAIT afterwards；
S7, in RD_DATA states, TCM controllers read the data of TCM modules by sdi signal line, and write the data to
RAM areas, enter string-and transition status C_Pcon afterwards；
S8, in C_Pcon states, the data in the RAM areas of reading are combined into byte format by state machine by bit hytes, in order to
Arm processor is read, afterwards into completion status FINISH；
S9, in FINISH states, the 0th START that TCM controllers remove control register is 0, sets control register
The complement mark position FINISH_FLAG of the 3rd is 1, and afterwards by arm processor adapter control, arm processor can be opened again
Dynamic TCM controllers are operated to TCM, and operation can include writing, wiping, and process is ibid.
In embodiment, some or all functions of one or more of described equipment equipment or processing are by computer journey
Sequence realizes or supported that computer program is formed and is included in computer-readable medium by computer readable program code.
Program code is realized by computer in the present invention, can be computer readable program code, specifically include any kind of meter
Calculation machine code, including source code, object code and executable code.Also include computer-readable Jie for realizing function of the present invention
Matter, specifically includes any kind of medium that can be accessed by a computer, such as read-only storage (ROM), random access memory
Device (RAM), hard disk drive, CD (CD), the memory of digital video disc (DVD) or any other type.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Identical similar portion is referred to mutually between the difference of embodiment, each embodiment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
1. a kind of TCM control systems based on BMC, it is characterised in that including：BMC module, TCM controllers, TCM modules；
BMC module is provided with arm processor, and TCM controllers are integrated on BMC module, and TCM controllers are connected with arm processor；
TCM modules are connected with TCM controllers.
2. the TCM control systems according to claim 1 based on BMC, it is characterised in that
TCM controllers are connected using SPI interface with TCM modules；TCM controllers utilize hardware VHDL language, pass through AMBA
Bus is connected to the arm processor of BMC module.
3. the TCM control systems according to claim 2 based on BMC, it is characterised in that
TCM controllers are provided with SCLK connection ends, SDO connection ends, SDI connection ends, CS connection ends；
TCM modules are provided with clk pins, WR pins, RD pins, SEL pins；
TCM controller SCLK connection ends are connected with the clk pins of TCM modules, are used as the clock output signal of spi bus, control
TCM sequential；
TCM controller SDO connection ends are connected with the WR pins of TCM modules, as the data output signal of spi bus, are sent out to TCM
Send data；
TCM controller SDI connection ends are connected with the RD pins of TCM modules, as the data input signal of spi bus, are connect from TCM
Receive data；
TCM controller CS connection ends are connected with the SEL pins of TCM modules, as the enable signal of spi bus, for choosing
TCM, makes data manipulation effective.
4. the TCM control systems according to claim 1 or 2 based on BMC, it is characterised in that
TCM controllers include command register, length register, control register and RAM data shift zone；
The length of command register is 8bit, for depositing the different command parameter operated to TCM；Command parameter includes：Read,
Write, wipe；
The length of length register is 8bit, and for depositing the data length for needing to read or write TCM, unit is byte；
The length of control register is 8bit, by setting the corresponding mode bit of control register to control the operation of TCM modules.
5. the TCM control systems according to claim 4 based on BMC, it is characterised in that
The 0th of control register is START, puts 1 expression and starts the start-up operation of TCM controllers, clear 0 represents to stop TCM controls
Device works；1st is P_C, is set by TCM controllers, when RAM shift zones are converted into after the completion of serial data by parallel data,
P_C puts 1；2nd is C_P, is set by TCM controllers, when RAM shift zones are converted into after the completion of parallel data by serial data,
C_P puts 1；3rd is FINISH_FLAG, puts the completion of 1 expression data transfer, and clear 0 represents that data transfer is not completed.
6. the TCM control systems according to claim 4 based on BMC, it is characterised in that
RAM data shift zone sets the size in RAM areas to be 1KB (8bit*1024), and the RAM shift zones are used for handle and are sent to TCM
The data of module, serial data is converted into by parallel 8bit, and TCM modules are sent to will pass through SDO data wires；Work as reading
During TCM module datas, the TCM serial datas read by SDI data wires can be constituted parallel data and supplied by the RAM shift zones
Arm processor is read.
7. the TCM control systems according to claim 1 or 2 based on BMC, it is characterised in that
TCM controllers employ finite state machine method, including：Idle condition IDLE, beginning state BEGIN, write order shape
State WR_CMD, length condition WR_LEN is write, data mode WR_DATA, parallel-serial converter state P_Ccon is write, reads data mode RD_
DATA, string-and transition status C_Pcon and completion status FINISH.
8. a kind of TCM control methods based on BMCSPI interfaces, it is characterised in that control method includes：
TCM controllers enter idle condition IDLE after S1, system power-on reset, wait the operation of arm processor next step；When
Arm processor set control register the 0th START be 1 after, TCM controllers start working, state machine enter BEGIN shapes
State；
S2, in BEGIN states, TCM controllers make SCLK, SDO synchronous with sdi signal, afterwards state machine enter write order shape
State WR_CMD；
S3, in WR_CMD states, TCM controllers write the command word for reading TCM modules to command register, and state machine enters afterwards
Enter to write length condition WR_LEN；
S4, in WR_LEN states, TCM controllers write the TCM module data length for needing to read to length register, and unit is
Byte, state machine, which enters, afterwards writes data mode WR_DATA；
S5, in WR_DATA states, the command word for reading TCM modules is write RAM areas by TCM controllers, and state machine enters afterwards
Parallel-serial converter state P_Ccon；
S6, in P_Ccon states, state machine is converted to the data in RAM areas by bit outputs by the form inputted by byte
Mode, exported by SDO signal line, afterwards state machine enter wait state WAIT；
S7, in RD_DATA states, TCM controllers read the data of TCM modules by sdi signal line, and write the data to RAM
Area, enters string-and transition status C_Pcon afterwards；
S8, in C_Pcon states, the data in the RAM areas of reading are combined into byte format by state machine by bit hytes, in order to ARM
Processor is read, afterwards into completion status FINISH；
S9, in FINISH states, the 0th START that TCM controllers remove control register is 0, sets control register the 3rd
The complement mark position FINISH_FLAG of position is 1, and afterwards by arm processor adapter control, arm processor can be again started up
TCM controllers are operated to TCM, and process is ibid.
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| CN201710326170.2A CN107168904A (en) | 2017-05-10 | 2017-05-10 | A kind of TCM control systems and method based on BMCSPI interfaces |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109358906A (en) * | 2018-09-26 | 2019-02-19 | 郑州云海信息技术有限公司 | It is a kind of to enable the method and system that BIOS serial ports redirects by setting BMC OEM order |
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| CN106599677A (en) * | 2016-12-23 | 2017-04-26 | 郑州云海信息技术有限公司 | Password control system and control method used for baseboard management controller |
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| US20140195711A1 (en) * | 2013-01-04 | 2014-07-10 | American Megatrends, Inc. | Pci express channel implementation in intelligent platform management interface stack |
| CN103984901A (en) * | 2014-06-11 | 2014-08-13 | 上海新储集成电路有限公司 | Trusted computer system and application method thereof |
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Application publication date: 20170915 |