JPH06103250A - Method for initializing multiprocessor system - Google Patents

Abstract

PURPOSE:To unnecessitate a dedicated processor for initialization. CONSTITUTION:Each of plural processors 1 to 3 sharing a storage means 8 is provided with a self-diagnostic test executing means 10 for executing a self- diagnostic test, a normal flag setting means 11 for setting up a normal flag 61, 62, or 63 when the test result is normal, an occupied flag monitoring means 13 for reading out an occupied flag 80 and recognizing its own processor as an initializing processor when the value of the read flag 80 is valid, an occupied flag setting means 14 for invalidating the flag 80, and an initialization executing means 19 for selecting a processor in which the normal flag 61, 62, or 63 is set up and an end flag 71 is not set up and initializing the selected processor and constituted so as to set up the end flag 71, 72, or 73 of the corresponding processor when the initialized result is normal or invalidate the normal flag 61, 62, or 63 of the corresponding processor when the initialized result is abnormal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an initial setting method for an information processing apparatus, and more particularly to an initial setting method for a multiprocessor system.

[0002]

2. Description of the Related Art Conventionally, the initialization of an information processing apparatus of this type has a dedicated system initialization processor, and the processor executes the initialization for each processor constituting the system.

[0003]

In the above-mentioned conventional initialization method of the information processing apparatus, at least one dedicated system initialization processor for initializing the system is required in the system, which is the system price. It was an obstacle to reduction. Further, when the dedicated system initialization processor fails, the system initialization cannot be executed.

[0004]

The first method of the present invention is as follows.
In a system initialization method executed at power-on or initialization request of a multiprocessor system having a storage means shared by a plurality of processors, each processor performs a self-diagnosis test execution means for performing a self-diagnosis test of the processor. If the result of the self-diagnosis test is normal, the normal flag setting means for setting the normal flag of the own processor in the storage means and the occupancy flag in the storage means are read, and if the value is valid, An occupancy flag monitoring means for recognizing its own processor as a system initialization processor,
In the case of an exclusive flag setting means for disabling the exclusive flag and a system initial setting processor, a processor in which a normal flag is set and an end flag is not set is selected from the storage means, and the selected processor is selected. The initial setting execution means for performing initial setting and the end flag setting means for setting the end flag of the corresponding processor in the storage means if the result of the initial setting is normal. If the result of the initialization is abnormal, the means invalidates the normal flag of the corresponding processor in the storage means, and one of the processors constituting the system executes the initialization of the system. It features an initial setting method of a multiprocessor system.

A second method of the present invention is a system initialization method which is executed at the time of power-on of a multiprocessor system having a storage means shared by a plurality of processors or when an initialization request is made. A self-diagnosis test execution means for performing a self-diagnosis test of the processor; a normal flag setting means for setting a normal flag of the self-processor in the storage means if the result of the self-diagnosis test is normal; When the exclusive flag is read out and the priority table of the own processor is valid, the priority recognition means for recognizing the own processor as the system initialization processor, and when it is the system initialization processor, the normal flag is read from the storage means. Is set,
Further, if a processor for which an end flag is not set is selected and initialization is performed for the selected processor and the result of the initialization is normal, the end flag of the corresponding processor in the storage means If the result of the writing setting is abnormal, the initial setting execution means invalidates the normal flag of the corresponding processor in the storage means, and One of the features is a multiprocessor system initialization scheme characterized in that one of them performs system initialization.

A third method of the present invention is a system initialization method which is executed at power-on of a multiprocessor system having storage means shared by a plurality of processors, or when initialization is requested. A self-diagnosis test means for performing a self-diagnosis test of the processor; and a normal flag setting means for setting a normal flag of the self-processor in the storage means if the result of the self-diagnosis test is normal,
If the normality flag and priority table in the storage means are read and the own processor has a valid priority, the priority recognition means for recognizing the own processor as the system initialization processor; From the means, select the processor with the normal flag set, read the end flag in the selected processor, and if it is not set, the initialization execution means that performs the initial setting for the selected processor, and the result of the initialization. If the result is normal, it has an end flag setting means for setting an end flag in the selected processor, and if the result of the initial setting is abnormal, the initial setting execution means corresponds to the processor in the shared storage means. Disable the normal flag in and the one of the processors that make up the system Wherein the initial setting method of the multiprocessor system, characterized in that the rows.

A fourth method of the present invention is a system initialization method which is executed when a multiprocessor system having a storage means shared by a plurality of processors is turned on or when initialization is requested. A self-diagnosis test means for performing a self-diagnosis test of the processor; and a normal flag setting means for setting a normal flag of the self-processor in the storage means if the result of the self-diagnosis test is normal,
An occupancy flag monitoring unit that reads the occupancy flag from the storage unit and recognizes the processor as a system initialization processor if the value is valid, an occupancy flag setting unit that invalidates the occupancy flag, and a system initialization processor. In some cases, a processor in which a normal flag is set is selected from the storage unit, an end flag in the selected processor is read out, and if not set, an initialization setting unit that performs initialization in the selected processor is provided. And an end flag setting means for setting an end flag in the selected processor if the result of the initial setting is normal, and the initial setting executing means shares the storage means if the result of the initial setting is abnormal. The normal flag of the corresponding processor in the The initial setting method of a multiprocessor system and executes the initial setting, characterized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of the present invention, in which 1 to 3 are processors having the same structure and the same function, and 8
Is a storage means shared by the processors. here,
It is assumed that the processor 1 becomes the system initialization processor and first performs initialization on the processor 2.

In the processor 1, 10 is a self-diagnosis test executing means, 11 is a normal flag setting means, 12 is an end flag setting means, 13 is an occupation flag monitoring means, 14 is an occupation flag setting means, and 19 is an initial setting executing means. is there. The processors 2 and 3 also have the same configuration as the processor 1, although not particularly shown.

In the storage means 8, 61 is the processor 1.
A normal flag, 62 is a processor 2 normal flag, 63 is a processor 3 normal flag, 71 is a processor 1 end flag, 72 is a processor 2 normal flag, 73 is a processor 3 normal flag, and 80 is an exclusive flag. The normal flags 61 to 63 are set when the self-diagnosis test of the corresponding processor is normally performed, and the end flags 71 to 73 are set when the initial setting of the corresponding processor is completed. The occupancy flag 80 is invalidated when any of the processors can be initialized, and is valid otherwise.

Next, the operation will be specifically described. When the system is powered on or when initialization is requested, each processor executes the self-diagnosis test of its own processor by using the self-diagnosis test execution means of its own processor. For example,
In the processor 1, the self-diagnosis test execution means 10
Executes the self-diagnosis test of the processor 1, which is its own processor, and instructs the normal flag setting means 11 to set the processor 1 normal flag 61 if the result of the self-diagnosis test is normal. If the result of the self-diagnosis test is abnormal, the operation of the self-processor is stopped and the processor 1 normal flag 61 is not set.

The normal flag setting means 11 accesses the storage means 8 via the bus 100, sets the processor 1 normal flag 61 in the area of its own processor in the storage means 8, and occupies the occupation flag monitoring means 13. Instruct to monitor the flag 80.

The occupancy flag monitoring means 13 accesses the storage means 8 via the bus 100, reads out the occupancy flag 80 in the storage means 8, and if the value is valid (for example, set), the occupancy flag 80 is occupied. The flag setting means 14 is instructed to invalidate (for example, reset) the occupation flag 80.

The occupancy flag setting means 14 accesses the storage means 8 via the bus 100 to invalidate the occupancy flag 80 in the storage means 8, and the occupancy flag monitoring means 13 instructs the initial setting execution means 19 to execute the processor ( Instruct to execute the initial settings (including its own processor).

The initial setting execution means 19 accesses the storage means 8 via the bus 100 (this route is not shown), and the normal flags 62 to 6 of each processor in the storage means 8 are accessed.
3 and end flags 72 to 73 are read, a processor (for example, processor 2) in which the normal flag is valid and the end flag is not set is selected, the initial setting is executed for the selected processor, and the result of the initial setting is normal. If,
The end flag setting means 12 is instructed to set the end flag of the selected processor (for example, the processor 2 end flag 72).

If the result of the initial setting is abnormal, the normal flag setting means 11 is instructed to invalidate the normal flag of the selected processor (for example, the processor 2 normal flag 62) to initialize the other processors. To start.

If there is no processor for which the end flag is not set, the initial setting of the system ends.
The end flag setting means 12 accesses the storage means 8 via the bus 100 and sets the end flag corresponding to the selected processor in the storage means 8.

FIG. 5 is a flow chart of this embodiment.
A schematic individual operation flow of the multiprocessor system described above is shown. In this flowchart, Y is YE
S and N show NO.

FIG. 2 is a block diagram showing a second embodiment of the present invention, in which 1 to 3 are processors having the same structure and the same function, and 8
Is a storage means shared by the processors. here,
It is assumed that the processor 1 becomes the system initialization processor and first executes initialization for the processor 200. In the processor 100, 10 is a self-diagnosis test execution means, 11 is a normal flag setting means, 12 is an end flag setting means, 17 is a priority order recognition means, and 19 is an initial setting execution means. The processors 2 and 3 also have the same configuration as the processor 1, although not particularly shown.

In the storage means 8, 61 is the processor 1.
A normal flag, 62 is a processor 2 normal flag, 63 is a processor 3 normal flag, 71 is a processor 1 end flag, 72 is a processor 2 normal flag, 73 is a processor 3 normal flag, and 90 is a priority table.

In FIGS. 2 and 1, components with common reference numerals are common to both figures.

Next, the operation will be specifically described. When the system is powered on or when initialization is requested, each processor executes the self-diagnosis test of its own processor by using the self-diagnosis test execution means of its own processor. For example,
In the processor 1, the self-diagnosis test execution means 10
Executes a self-diagnosis test of its own processor 1, and if the result of the self-diagnosis test is normal, the normal flag 61 of its own processor 1 is sent to the normal flag setting means 1.
Specify the settings for. If the result of the self-diagnosis test is abnormal, the operation of the self-processor is stopped and the normal flag 61 of the self-processor 1 is not set.

The normal flag setting means 11 accesses the storage means 8 via the bus 100, sets the processor 1 normal flag 61 in the area of its own processor in the storage means 8, and gives priority to the priority order recognition means 12. Ranking table 9
0 and the normal flags 61 to 63 of each processor are instructed to be monitored.

The priority order recognition means 17 accesses the storage means 8 via the bus 100, reads out the normal flags 61 to 63 of the respective processors in the storage means 8, and the priority order table for the processors whose values are valid. Read the priority of each processor preset to 90,
When the priority order of the own processor is valid (for example, the highest priority order), the initialization execution means 19 is instructed to execute the initialization of the processor (including the own processor).

The initial setting executing means 19 accesses the storage means 8 via the bus 100 and reads out the normal flags 62 to 63 and the end flags 72 to 73 of each processor in the storage means 8 so that the normal flag is valid and ends. A processor (for example, processor 2) for which a flag is not set is selected, initialization is executed for the selected processor, and if the result of the initialization is normal, the end flag setting means 12
Is instructed to set the end flag of the selected processor (for example, the processor 2 end flag 72).

If the result of the initial setting is abnormal, the normal flag setting means 11 is instructed to invalidate the normal flag of the selected processor (for example, the processor 2 normal flag 62), and the other processors are initialized. To start.

If there is no processor in which the normal flag is valid and the priority is valid, the system initialization is completed. The end flag setting means 12 accesses the storage means 8 via the bus 100 and sets the end flag corresponding to the selected processor in the storage means 8.

FIG. 6 is a flow chart of this embodiment.
A schematic individual operation flow of the multiprocessor system described above is shown.

FIG. 3 is a block diagram showing a third embodiment of the present invention, in which 1 to 3 are processors having the same configuration and the same function,
Reference numeral 8 is a storage means shared by the processors. Here, in particular, it is assumed that the processor 1 becomes the system initial setting processor and first executes the initial setting for the processor 2.

In the processor 1, 10 is a self-diagnosis test execution means, 11 is a normal flag setting means, 12 is an end flag setting means, 17 is a priority order recognition means, 19 is an initial setting execution means, and 71 is an end flag. The processors 2 and 3 also have the same configuration as the processor 1, although not particularly shown.

In the storage means 8, 61 is the processor 1.
A normal flag, 62 is a processor 2 normal flag, 63 is a processor 3 normal flag, and 90 is a priority table.

Next, the operation will be specifically described. When the system is powered on or when initialization is requested, each processor executes the self-diagnosis test of its own processor by using the self-diagnosis test execution means of its own processor. For example,
In the processor 1, the self-diagnosis test execution means 10 executes the self-diagnosis test of the processor 1, which is the self-processor, and if the result of the self-diagnosis test is normal, the normal flag setting means 11 sends the normal flag of the processor 1 to the normal flag. Instruct to set 61. If the result of the self-diagnosis test is above, the operation of the self processor is stopped and the normal flag of the self processor is not set.

The normal flag setting means 11 accesses the storage means 8 via the bus 100, sets the processor 1 normal flag 61 in the area of its own processor in the storage means 8, and gives priority to the priority order recognition means 12. Ranking table 9
0 and the normal flags 61 to 63 of each processor are instructed to be monitored.

The priority order recognition means 17 accesses the storage means 8 via the bus 100, reads out the normal flags 61 to 63 of the respective processors in the storage means 8, and the priority order table for the processors whose values are valid. Read the priority of each processor preset to 90,
When the priority order of the own processor is valid (for example, the highest priority order), the initialization execution means 19 is instructed to execute the initialization of the processor (including the own processor).

The initialization execution means 19 accesses the storage means 8 via the bus 100, reads the normal flags 62 to 63 of each processor in the storage means 8, and the processor in which the normal flag is valid (for example, the processor 2). Select
The end flag (for example, the end flag 72) in the selected processor is read, and if the end flag is not set, the initial setting is executed for the processor. If the result of the initial setting is normal, the end flag is set. The means 12 is instructed to set the end flag (for example, the end flag 72) in the selected processor.

If the result of the initial setting is abnormal, the normal flag setting means 11 is instructed to invalidate the normal flag of the selected processor (for example, the processor 2 normal flag 62) and the other processors are initialized. To start.

If the termination flags in all the selected processors are set, the system initialization is terminated. The end flag setting means 12 accesses the selected processor via the bus 100 and sets an end flag in the processor.

FIG. 7 is a flow chart of this embodiment and shows a schematic individual operation flow of the multiprocessor system described above.

FIG. 4 is a block diagram showing a fourth embodiment of the present invention, in which 1 to 3 are processors having the same configuration and the same function, and 8
Is a storage means shared by the processors. Here, in particular, it is assumed that the processor 1 becomes the system initial setting processor and first executes the initial setting for the processor 2.

In the processor 1, 10 is a self-diagnosis test executing means, 11 is a normal flag setting means, 12 is an end flag setting means, 13 is an occupation flag monitoring means, 14 is an occupation flag setting means, 19 is an initial setting executing means, 71 is an end flag. In the processor 2, reference numeral 72 denotes an end flag, which is composed of the respective units described above, like the processor 1, although not particularly shown. The same applies to the processor 3.

In the storage means 8, 61 is the processor 1.
A normal flag, 62 is a processor 2 normal flag, 63 is a processor 3 normal flag, and 80 is an occupation flag.

Next, the operation will be specifically described. When the system is powered on or when initialization is requested, each processor executes the self-diagnosis test of its own processor by using the self-diagnosis test execution means of its own processor. For example,
In the processor 1, the self-diagnosis test execution means 10
Executes the self-diagnosis test of the processor 1, which is its own processor, and if the result of the self-diagnosis test is normal, the normal flag 61 of the processor 1 is sent to the normal flag setting means 11.
Specify the settings for. If the result of the self-diagnosis test is abnormal, the operation of the self-processor is stopped and the normal flag 61 of the processor 1 is not set.

The normal flag setting means 11 accesses the storage means 8 via the bus 100, sets the processor 1 normal flag 61 in the area of its own processor in the storage means 8, and occupies the occupation flag monitoring means 13. Instruct to monitor the flag.

The occupancy flag monitoring means 13 accesses the storage means 8 via the bus 100, reads the occupancy flag 80 in the storage means 8, and if the value is valid (for example, set), the occupancy flag 80 is occupied. The flag setting means 14 is instructed to invalidate (for example, reset) the occupation flag 80.

The occupancy flag setting means 14 accesses the storage means 8 via the bus 100, invalidates the occupancy flag 80 in the storage means 8, and initializes the processor (including its own processor) with respect to the initial setting execution means 19. Instruct to execute the setting.

The initial setting execution means 19 accesses the storage means 8 via the bus 100, reads the normal flags 62 to 63 of each processor in the storage means 8, and the processor in which the normal flag is valid (for example, the processor 2). Select
The end flag (for example, the end flag 72) in the selected processor is read, and if the end flag is not set, the initial setting is executed for the processor. If the result of the initial setting is normal, the end flag is set. The means 12 is instructed to set the end flag (for example, the end flag 72) of the selected processor.

If the result of the initial setting is abnormal, the normal flag setting means 11 is instructed to invalidate the normal flag of the selected processor (for example, the processor 2 normal flag 62) and the other processors are initialized. To start.

If there is no processor for which the end flag is not set, the system initialization is ended.
The end flag setting means 12 accesses the selected processor via the bus 100 and sets the end flag in the processor.

FIG. 8 is a flow chart of this embodiment, showing a schematic individual operation flow of the multiprocessor system described above.

[0051]

As described above, according to the initialization method of the multiprocessor system of the present invention, a dedicated system initialization processor is required because one of the processors constituting the system executes the initialization of the system. Becomes

Further, since some of the processors constituting the system can be the system initial setting processor, it is possible to easily deal with the failure of the system initial setting processor, and the system reliability is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a third embodiment of the present invention.

FIG. 4 is a block diagram showing a fourth embodiment of the present invention.

5 is a flowchart of the embodiment shown in FIG.

6 is a flowchart of the embodiment shown in FIG.

7 is a flowchart of the embodiment shown in FIG.

8 is a flowchart of the embodiment shown in FIG.

[Explanation of symbols]

 1, 2 and 3 processor 8 storage means 10 self-diagnostic test execution means 11 normal flag setting means 12 end flag setting means 13 occupancy flag monitoring means 14 occupancy flag setting means 17 priority recognition execution means 19 initial setting execution means 61 processor 1 normal flag 62 processor 2 normal flag 63 processor 3 normal flag 71 processor 1 end flag 72 processor 2 end flag 73 processor 3 end flag 80 occupancy flag 90 priority table 100 bus

Claims (4)

[Claims] 1. In a system initialization method executed at the time of power-on or initialization request of a multiprocessor system having a storage means shared by a plurality of processors, each processor carries out a self-diagnosis test of the processor. If the result of the self-diagnosis test is normal, the normal flag setting means for setting the normal flag of the own processor in the storage means, and the occupancy flag in the storage means are read out, and their values are read. Occupancy flag monitoring means for recognizing its own processor as the system initialization processor, if it is valid, an occupancy flag setting means for disabling the occupancy flag, and if it is the system initialization processor, a normal flag is set from the storage means. Selected processor that has no end flag set and the selected processor Initial setting execution means for performing initial setting, and end flag setting means for setting an end flag of the corresponding processor in the storage means if the result of the initial setting is normal. If the result of the initialization is abnormal, the means invalidates the normal flag of the corresponding processor in the storage means, and one of the processors constituting the system executes the initialization of the system. Initial setting method of multiprocessor system. 2. In a system initialization method executed at power-on of a multiprocessor system having storage means shared by a plurality of processors or when initialization is requested, each processor performs a self-diagnosis test of the processor. A self-diagnosis test execution means, a normal flag setting means for setting a normal flag of the self-processor in the storage means if the result of the self-diagnosis test is normal, an occupation flag in the storage means and a priority table. Read-out, if the priority of the own processor is valid, priority recognition means for recognizing the own processor as the system initialization processor; and if it is the system initialization processor, the normal flag is set from the storage means, and the processing ends. Select a processor that does not have a flag set, and set the initial settings for the selected processor. And an end flag setting means for setting an end flag of the corresponding processor in the storage means if the result of the initial setting is normal. If the result of the setting is abnormal, the normal flag of the corresponding processor in the storage means is invalidated, and one of the processors constituting the system executes the initial setting of the system. Initial setting method. 3. In a system initialization method which is executed at power-on of a multiprocessor system having a storage means shared by a plurality of processors or when initialization is requested, each processor performs a self-diagnosis test of the processor. The self-diagnosis test means, and if the result of the self-diagnosis test is normal, the normal flag setting means for setting the normal flag of the self-processor in the storage means, the normal flag in the storage means, and the priority table are read. If the priority of the own processor is valid, the priority recognition means for recognizing the own processor as the system initialization processor, and if it is the system initialization processor, select the processor with the normal flag set from the storage means. ,
If the end flag in the selected processor is not read and set, and if it is not set, the initialization execution means for performing the initialization to the selected processor, and if the result of the initialization is normal, the end flag in the selected processor is set. If the result of the initial setting is abnormal, the initial setting execution unit invalidates the normal flag of the corresponding processor in the shared storage unit, and sets the end flag setting unit. One of the methods is to perform an initial setting of the system, which is an initial setting method of a multiprocessor system. 4. In a system initialization method which is executed at power-on of a multiprocessor system including a storage means shared by a plurality of processors or when initialization is requested, each processor performs a self-diagnosis test of the processor. If the self-diagnosis test means and the result of the self-diagnosis test are normal, the normal flag setting means for setting the normal flag of the self-processor in the storage means and the occupancy flag of the storage means are read, and the value is valid. In this case, an exclusive flag monitoring means for recognizing the own processor as a system initial setting processor, an exclusive flag setting means for invalidating the exclusive flag, and a normal flag from the storage means for the system initial setting processor Select the processor
If the end flag in the selected processor is not read and set, and if it is not set, the initialization execution means for performing the initialization to the selected processor, and if the result of the initialization is normal, the end flag in the selected processor is set. If the result of the initial setting is abnormal, the initial setting execution unit invalidates the normal flag of the corresponding processor in the shared storage unit, and sets the end flag setting unit. One of the methods is to perform an initial setting of the system, which is an initial setting method of a multiprocessor system.