JP3076155B2 - Initial setting method of multiprocessor system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

[0003]

In the above-described conventional initialization method of the information processing apparatus, the system requires at least one dedicated system initialization processor for performing the initialization of the system, which is a system cost. An obstacle to reduction. In addition, when the dedicated system initialization processor fails, the system initialization cannot be performed.

[0004]

A first method of the present invention is as follows.
In a system initialization method executed when a multiprocessor system including storage means shared by a plurality of processors is powered on or when an initialization request is made, each of the processors performs a self-diagnosis test of the processor. If the result of the self-diagnosis test is normal, a normal flag setting means for setting a normal flag of the own processor in the storage means, and an occupancy flag in the storage means are read out. Occupancy flag monitoring means for recognizing the processor as a system initialization processor;
If the processor is an occupancy flag setting unit for invalidating the occupation flag and a system initialization processor, a processor having a normal flag set and an end flag not set from the storage unit is selected, and Initial setting executing means for performing initial setting for the first processor, and end flag setting means for setting an end flag of a corresponding processor in the storage means if the result of the initial setting is normal. If the result of the initialization is abnormal, the normality flag of the corresponding processor in the storage means is invalidated, and one of the processors constituting the system performs the initialization of the system. The multi-processor system is characterized by an initial setting method.

According to a second method of the present invention, in a system initialization method executed at the time of power-on or initialization request of a multiprocessor system having storage means shared by a plurality of processors, each of the processors comprises: A self-diagnosis test execution unit for performing a self-diagnosis test of the processor; a normal flag setting unit for setting a normal flag of the own processor in the storage unit if a result of the self-diagnosis test is normal; A normality flag and a priority order table are read out, priority order recognition means for recognizing the own processor as a system initialization processor if the priority of the own processor is valid, and a normality flag from the storage means if the processor is a system initialization processor. Is set,
And an initialization setting means for selecting a processor for which the end flag is not set, and performing initial setting for the selected processor, and 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 writing setting is abnormal, the initialization setting execution means invalidates the normal flag of the corresponding processor in the storage means, and sets the end flag of the processor constituting the system. One of them performs an initialization of a system, and is characterized by an initialization method of a multiprocessor system.

According to a third method of the present invention, in a system initialization method executed at the time of turning on the power of a multiprocessor system having storage means shared by a plurality of processors or at the time of an initialization request, each of the processors comprises: Self-diagnosis test means for performing a self-diagnosis test of the processor; normal flag setting means for setting a normal flag of the own processor in the storage means if the result of the self-diagnosis test is normal;
The normality flag and the priority table in the storage means are read, and priority recognition means for recognizing the own processor as a system initialization processor if the priority of the own processor is valid; Means for selecting a processor for which a normal flag is set from the means, reading an end flag in the selected processor, and if not set, performing initial setting for the selected processor; and a result of the initial setting. If the result of the initialization is abnormal, there is provided an end flag setting means for setting an end flag in the selected processor. Invalidates the normal flag, and one of the processors that configure the system initializes the system. Wherein the initial setting method of the multiprocessor system, characterized in that the rows.

According to a fourth method of the present invention, in a system initialization method executed at the time of power-on or initialization request of a multiprocessor system having storage means shared by a plurality of processors, each of the processors comprises: Self-diagnosis test means for performing a self-diagnosis test of the processor; normal flag setting means for setting a normal flag of the own 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 own processor as a system initialization processor if the value is valid; an occupation flag setting unit that invalidates the occupation flag; and a system initialization processor. If there is, an initialization setting means for selecting a processor for which a normal flag is set from the storage means, reading an end flag in the selected processor, and if not set, for performing an initial setting for the selected processor; 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 execution means sharing the storage means if the result of the initial setting is abnormal. Invalidates the normal flag of the corresponding processor in the system, and one of the processors constituting the system The initial setting method of a multiprocessor system and executes the initial setting, characterized.

[0008]

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.
Is storage means shared by the processors. here,
It is assumed that the processor 1 becomes a system initialization processor, and first executes initialization of 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, 13 is an occupation flag monitoring means, 14 is an occupation flag setting means, and 19 is an initial setting execution means. is there. Although not shown, the processors 2 and 3 have the same configuration as the processor 1.

In the storage means 8, reference numeral 61 denotes 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 occupation 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 activated otherwise.

Next, the operation will be specifically described. When the power of the system is turned on or when an initialization is requested, each processor executes a self-diagnosis test of its own processor using its own self-diagnosis test execution means. 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, instructs the normal flag setting means 11 to set the processor 1 normal flag 61. If the result of the self-diagnosis test is abnormal, the operation of the own 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 the own processor in the storage means 8, and occupies the occupation flag monitoring means 13. The monitoring of the flag 80 is instructed.

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

The occupation flag setting means 14 accesses the storage means 8 via the bus 100 and invalidates the occupation flag 80 in the storage means 8. (Including its own processor).

The initial setting execution unit 19 accesses the storage unit 8 via the bus 100 (this route is not shown), and the normal flags 62 to 6 of the respective processors in the storage unit 8.
3 and the end flags 72 to 73 are read out, a processor whose validity flag is valid and the end flag is not set (for example, the processor 2) is selected, the initial setting is executed for the selected processor, and the result of the initial setting is normal. If,
It instructs the end flag setting means 12 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 (for example, the processor 2 normal flag 62) of the selected processor, and the other processors are initialized. To start.

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

FIG. 5 is a flowchart 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 indicate NO.

FIG. 2 is a block diagram showing a second embodiment of the present invention.
Is storage means shared by the processors. here,
It is assumed that the processor 1 serves as a system initialization processor, and first performs initialization on the processor 200. In the processor 100, 10 is a self-diagnosis test execution unit, 11 is a normal flag setting unit, 12 is an end flag setting unit, 17 is a priority recognition unit, and 19 is an initial setting execution unit. Although not shown, the processors 2 and 3 have the same configuration as the processor 1.

In the storage means 8, reference numeral 61 denotes 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 denoted by common reference numerals are common to both figures.

Next, the operation will be specifically described. When the power of the system is turned on or when an initialization is requested, each processor executes a self-diagnosis test of its own processor using its own self-diagnosis test execution means. 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 setting means 1 sends the normal flag 61
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 recognition means 12. Ranking table 9
0 and the monitoring of the normal flags 61 to 63 of each processor are instructed.

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

The initial setting execution means 19 accesses the storage means 8 via the bus 100, reads out the normal flags 62 to 63 and the end flags 72 to 73 of the respective processors in the storage means 8, and makes the normal flags valid and end. A processor (for example, processor 2) for which a flag is not set is selected, an initial setting is executed for the selected processor, and if the result of the initial setting 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 (for example, the processor 2 normal flag 62) of the selected processor, 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 unit 12 accesses the storage unit 8 via the bus 100, and sets an end flag corresponding to the selected processor in the storage unit 8.

FIG. 6 is a flowchart 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.
Reference numeral 8 denotes storage means shared by the processors. Here, in particular, it is assumed that the processor 1 becomes a system initialization processor, and that the processor 2 first performs initialization.

In the processor 1, reference numeral 10 denotes a self-diagnosis test execution unit, 11 denotes a normal flag setting unit, 12 denotes an end flag setting unit, 17 denotes a priority recognition unit, 19 denotes an initial setting execution unit, and 71 denotes an end flag. Although not shown, the processors 2 and 3 have the same configuration as the processor 1.

In the storage means 8, reference numeral 61 denotes 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 order table.

Next, the operation will be specifically described. When the power of the system is turned on or when an initialization is requested, each processor executes a self-diagnosis test of its own processor using its own self-diagnosis test execution means. 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 setting means 11 61 is instructed. If the result of the self-diagnosis test is abnormal , the operation of the own processor is stopped, and the normal flag of the own 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 its own processor area in the storage means 8, and gives priority to the priority recognition means 12. Ranking table 9
0 and the monitoring of the normal flags 61 to 63 of each processor are instructed.

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

The initial setting execution means 19 accesses the storage means 8 via the bus 100, reads out the normal flags 62 to 63 of the respective processors in the storage means 8, and reads the processor for which the normal flag is valid (for example, the processor 2). And 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 initialization is executed for the processor. If the result of the initialization is normal, the end flag is set. Instruct the means 12 to set an end flag (for example, 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 (for example, the processor 2 normal flag 62) of the selected processor, and the other processors are initialized. To start.

If the end flags in all the selected processors are set, the initialization of the system ends. 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 flowchart of the present 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.
Is storage means shared by the processors. Here, in particular, it is assumed that the processor 1 becomes a system initialization processor, and that the processor 2 first performs initialization.

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 execution means, 71 is an end flag. In the processor 2, reference numeral 72 denotes an end flag. Although not shown, similarly to the processor 1, the end flag 72 includes the above-described units. The same applies to the processor 3.

In the storage means 8, reference numeral 61 denotes 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 power of the system is turned on or when an initialization is requested, each processor executes a self-diagnosis test of its own processor using its own self-diagnosis test execution means. 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 setting means 11
Specify the settings for If the result of the self-diagnosis test is abnormal, the operation of the own 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 the own processor in the storage means 8, and occupies the occupation flag monitoring means 13. Instructs flag monitoring.

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

The occupation flag setting means 14 accesses the storage means 8 via the bus 100, invalidates the occupation flag 80 in the storage means 8, and instructs the initial setting execution means 19 to initialize the processor (including its own processor). Instruct execution of setting.

The initial setting execution means 19 accesses the storage means 8 via the bus 100, reads out the normal flags 62 to 63 of the respective processors in the storage means 8, and reads the processor for which the normal flag is valid (for example, the processor 2). And 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 initialization is executed for the processor. If the result of the initialization is normal, the end flag is set. It instructs the means 12 to set an end flag (for example, 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 (for example, the processor 2 normal flag 62) of the selected processor, and the other processors are initialized. To start.

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

FIG. 8 is a flowchart of the present embodiment, which shows a schematic individual operation flow of the multiprocessor system described above.

[0051]

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

Further, since some processors constituting the system can be used as system initialization processors, it is possible to easily cope with a failure of the system initialization processor, thereby improving the reliability of the system.

[Brief description of the 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.

FIG. 5 is a flowchart of the embodiment shown in FIG. 1;

FIG. 6 is a flowchart of the embodiment shown in FIG. 2;

FIG. 7 is a flowchart of the embodiment shown in FIG. 3;

FIG. 8 is a flowchart of the embodiment shown in FIG.

[Explanation of symbols]

 1, 2, 3 processor 8 storage means 10 self-diagnosis test execution means 11 normal flag setting means 12 end flag setting means 13 occupation flag monitoring means 14 occupation 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 Occupation flag 90 Priority table 100 Bus

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 15/177 681 G06F 1/24

Claims (4)

(57) [Claims] In a system initialization method executed when a multiprocessor system including storage means shared by a plurality of processors is powered on or when an initialization request is issued, each processor performs a self-diagnosis test of the processor. A self-diagnosis test execution unit, if the result of the self-diagnosis test is normal, a normal flag setting unit for setting a normal flag of the own processor in the storage unit, an occupancy flag in the storage unit is read, and the value is read. Occupation flag monitoring means for recognizing the own processor as a system initialization processor if is valid; occupation flag setting means for invalidating the occupation flag; and normality setting from the storage means when the system initialization processor is used. Processor that has been set and the end flag is not set, and the selected processor Initial setting executing means for performing initial setting for the processor, and end flag setting means for setting an end flag of a corresponding processor in the storage means if the result of the initial setting is normal; The means invalidates the normal flag of the corresponding processor in the storage means if the result of the initialization is abnormal, and one of the processors constituting the system performs the initialization of the system. Initial setting method for multiprocessor system. 2. In a system initialization method executed at the time of power-on or initialization request of a multiprocessor system having storage means shared by a plurality of processors, each processor performs a self-diagnosis test of the processor. A self-diagnosis test execution unit, a normal flag setting unit for setting a normal flag of the own processor in the storage unit if the result of the self-diagnosis test is normal, and a normal flag and priority order table in the storage unit. Reading, priority recognition means for recognizing the own processor as a system initialization processor if the priority of the own processor is valid;
When the processor is a system initialization processor, an initialization processor for selecting a processor for which a normal flag is set from the storage unit and for which an end flag is not set, and performing initialization for the selected processor; If the result of the initial setting is normal, it has end flag setting means for setting an end flag of the corresponding processor in the storage means, and if the result of the writing setting is abnormal, An initialization method for a multiprocessor system, wherein a normality flag of a corresponding processor in the storage means is invalidated, and one of processors constituting the system executes an initialization of the system. 3. In a system initialization method executed at the time of power-on or initialization request of a multiprocessor system having storage means shared by a plurality of processors, each processor performs a self-diagnosis test of the processor. A self-diagnosis test unit, if the result of the self-diagnosis test is normal, a normal flag setting unit for setting a normal flag of the own processor in the storage unit, and a normal flag and a priority table in the storage unit are read out. Priority recognition means for recognizing the own processor as a system initialization processor if the priority of the own processor is valid; and selecting a processor for which a normal flag is set from the storage means if the processor is a system initialization processor. ,
An initialization flag for reading an end flag in the selected processor and, if not set, initializing the selected processor; and setting an end flag in the selected processor if the result of the initialization is normal. End flag setting means for setting, if the result of the initial setting is abnormal, the initial setting execution means invalidates the normal flag of the corresponding processor in the shared storage means, among the processors constituting the system (1) performing an initialization of the system, wherein the initialization of the multiprocessor system is performed. 4. In a system initialization method executed when a multiprocessor system having storage means shared by a plurality of processors is powered on or when an initialization request is issued, each processor performs a self-diagnosis test of the processors. A self-diagnosis test unit, if the result of the self-diagnosis test is normal, a normal flag setting unit for setting a normal flag of the own processor in the storage unit, and an occupancy flag of the storage unit is read, and the value is valid. If so, an occupancy flag monitoring unit that recognizes the own processor as a system initialization processor; an occupancy flag setting unit that invalidates the occupation flag; and a normal flag is set from the storage unit when the processor is a system initialization processor. Select the processor that
An initialization flag for reading an end flag in the selected processor and, if not set, initializing the selected processor; and setting an end flag in the selected processor if the result of the initialization is normal. End flag setting means for setting, if the result of the initial setting is abnormal, the initial setting execution means invalidates the normal flag of the corresponding processor in the shared storage means, among the processors constituting the system (1) performing an initialization of the system, wherein the initialization of the multiprocessor system is performed.