JPS599768A - Initializing device of data processor - Google Patents

Abstract

PURPOSE:To prevent destruction of content of storage of a main processor, by performing initialization of the main processor by a service processor (SVP) only once at originally required time. CONSTITUTION:When the power source device 12 of SVP1 is turned on, own initializing program of SVC incorporated in PROM13 for automatic starting of SVP1 operates and initializing operation of a main processor 2 is started by the SVP1. By turning on of the power source device 12, SVP1 inputs a state signal 34 that indicates make and break of the power source 22 of the main processor 2, and read it through a register 16. On the other hand, as flip- flop 24 is reset when the power source 22 of the main processor 2 is turned on, SVP1 judges the initializing of the main processor 2 is not completed, and executes initializing program. When it is completed, the flip-flop is made to a set state to prevent another initialization.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an initial setting device for a data processing apparatus, which includes a main processor and a service processor (hereinafter abbreviated as SNP) that performs initial settings for the main processor.

In conventional data processing devices of this type, the main processor and the SV
Is each P an independent power supply? Even if the power supply device has one, both power supply devices are connected to one power system, and both power supply devices are turned on and off simultaneously through the power system. Therefore, the power-on of the main processor and the power-on of the SVP are designed to be equivalent in terms of timing, and the 5VP-
The automatic initial setting function is fully realized by starting the initial setting operation for the main processor when the power is turned on.

This conventional initialization method works perfectly correctly under normal usage conditions, but if the power to the SVP is completely shut off and then turned on during testing or maintenance, the initialization operations for the main processor will be performed each time the power is turned on. This has the drawback that the main processor's memory device, which has already been started and data has already been set, is cleared again.

An object of the present invention is to provide an initial setting device that performs the initial setting of the main processor by SVP only once when it is originally required, and prevents inconveniences such as destroying the contents of the main processor's storage device. It is about providing.

In order to achieve such an objective, the present invention provides a register that stores the information that the processor has been initialized once, and when the SVP is powered on, the contents of this register are identified and the contents of this register are identified and the contents of this register are checked to confirm that the processor has not been initialized. The main processor is initialized only when the main processor is identified.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration diagram of an embodiment of a data processing device that implements an initial setting device according to the present invention, and FIG. 2 is a flowchart showing an example of the flow of SvP processing after SvP power is turned on.

In FIG. 1, l is SVP, SVP central processing unit 1
1, svp power supply device 12, ROM 13, interface circuit 14, input/output register 15, and input register 16
It consists of Reference numeral 2 denotes a king processor, which includes a main processor central processing unit 21, a main processor power supply 22, an interface circuit 23, and a flip-flop 24 for storing initial settings.

Further, 31 is data exchanged between the SVP 1 and the main processor 2, 32 is a set signal from the 8VP1, 33 is an output signal of the 7-lip prop 24 of the main processor 2, and 34 and 35 are the output signals of the main processor 2. Status signals from power supply 22 and reset 48 are shown.

In FIG. 1, the feature of the present invention is that the main processor 2 has an initial setting storage flip 70 and a G'rf
, the flip-flop is connected to the power supply 2 of the main processor 2.
Reset by reset signal 35 when 20 is turned on, 5V
Set signal 32 issued by program control of P1
It is designed to be set properly. Further, the set output 33 of the flip 70 knob 24 is sent to svpi, and the power supply 22 of the main processor 2 sends out a status signal 34'5SVP1 indicating the power on/off state.

Now, when the power supply device 12 of 5VP1 is turned on, the 5VP
The SVP's own initialization program built in the ROM 13 for automatic start of the SVP is operated, and subsequently, the initial setting operation of the main processor 2 by 5vP1 shown in FIG. 2 is started.

By the way, there are only 381 states of the main processor 2 when the 5vP1 is powered on, the first being the cut-off state of the power supply 22 of the main processor 2, and the second being the state of the power supply 22 of the main processor 2.
2 is in a state where the power supply unit 22 of the main processor 2 is turned on, but the initial setting by SVP 1 has not yet been performed, and the third state is a state in which the power supply device 22 of the main processor 2 is in a state where it is turned on and the initial setting by 5VPl has been completed previously. .

When the power supply device 12 is turned on, the SVP 1 first inputs the status signal 34 indicating the on/off state of the power supply device 22 of the processor 2, reads it through the register 16, and performs the first conditional branch. (Step 41).

Here, if the main processor power supply 22 is on, the output signal 33 of the flip-flop 24 is further read through the input/output register 15, and a second conditional branch is performed (step 42). Here, if the flip-flop 24 is in the reset state, the 5vP1 determines that the initial settings of the raw processor 2 have not been completed, and the interface circuit 14
．． The data 31 is sent through 23 to initialize the electronic circuit (not shown) in the main processor 2 (step 4).
3) After that, the flip-flop 240 set signal 32 is issued through the input/output register 15 to set the flip-flop 24 (step 44), and the execution of the initial setting program is completed.

Furthermore, when the flip-flop 24 is in the set state at the time of the second conditional branch, 5vP1 is transferred to the main processor 2.
It is determined that the initial settings have been completed, and execution of the initial settings program ends without doing anything.

Further, when the first conditional branch identifies that the main processor power supply 22 is in a cut-off state, the 5VPI enters a waiting state until the main processor power supply 22 is turned on (step 45), and the main processor 2 is turned on. After that, the main processor 2 is initialized (step 43) and the flip-flop 24 is set (step 44) in the same way as described above.
Finish running the initialization program.

In this way, the 5vP1 determines whether the main processor has been initialized by determining the state of the flip 70 knob 24, and performs initialization when the initialization has not been completed. duplication can be avoided.

Although the above-mentioned example shows a case where a flip 70 tab is provided for storing initial settings, the present invention is not limited thereto, and any register that stores information may be used.

In addition, although an example has been described in which this initial setting storage register is provided on the main processor 2 side, this register is
There is no need to say that it can be installed on the side.

As described above, according to the present invention, even when the SVP power supply and the main processor power supply are turned on and off at completely independent timings, automatic initialization of the main processor by the SVP is performed only when necessary. In other words, it is possible to perform the process only once after the power of the main processor is turned on, and it is possible to avoid duplication of initial settings and eliminate the inconvenience of clearing the memory of the main processor. .

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of a data processing apparatus that implements the initial setting method according to the present invention, and FIG. 2 is a flowchart showing an example of the initial setting procedure using SvP shown in FIG.

Claims (1)

[Claims] 1. In a data processing device consisting of a first processing device and a second processing device that fully automatically performs the initial setting of the first processing device, one of the first and second processing devices register means for storing whether or not the first processing device has been initialized; upon power-on of the second processing device, all contents of the register means are identified, and the first processing device is initialized; When it is determined that the first processing device is not set, the second processing device initializes the first processing device, and stores the initial setting in the register means. Initial setting device.