Information processing apparatus, method for controlling information processing apparatus, and storage medium
An information processing apparatus includes a first processor, a second processor, and one or more non-volatile storage devices. The one or more storage devices store a first control program to be executed by the first processor and a second control program to be executed by the second processor. The first processor verifies the second control program stored in the one or more storage devices, and then verifies the first control program stored in the one or more storage devices.
1. An information processing apparatus comprising:
a first processor;
a second processor;
a printer configured to print an image on a sheet;
an image processing circuit configured to perform negotiation with the printer;
a storage controller configured to control a non-volatile storage; and
one or more non-volatile memories which store a first control program and an activation program to be executed by the first processor, and a second control program to be executed by the second processor,
wherein the first processor verifies the second control program stored in the one or more non-volatile memories, which is a program for controlling the image processing circuit that communicates with the printer via a communication line for the negotiation, and verifies the activation program stored in the one or more non-volatile memories, which is a program for activating the second processor by transferring the verified second control program to a volatile memory associated with the second processor and releasing a reset status of the second processor, and
wherein after completing verification of the second control program and the activation program, the first processor verifies the first control program stored in the one or more non-volatile memories, which is a program for executing initialization of the storage controller.
2. The information processing apparatus according to claim 1 , wherein
if power is supplied to the first processor, the first processor starts verification of the second control program stored in the one or more non-volatile memories.
3. The information processing apparatus according to claim 1 , wherein
if the first processor confirms that the second control program and the activation program are valid, the first processor executes the activation program, and if the first processor confirms that the first control program is valid, the first processor starts execution of the first control program.
4. The information processing apparatus according to claim 1 , wherein
if the second processor is activated by the first processor, the second processor starts execution of the second control program to cause a control target device to start preparation operation.
5. The information processing apparatus according to claim 1 , wherein
the first processor executes the activation program, to thereby read the second control program from the one or more non-volatile memories and transfer the read second control program to a memory associated with the second processor, and release a reset status of the second processor.
6. The information processing apparatus according to claim 5 , wherein
if the reset status of the second processor is released by the first processor, the second processor starts execution of the second control program stored in the memory.
7. The information processing apparatus according to claim 1 , wherein
regarding each of the first control program, the second control program, and the activation program stored in the one or more non-volatile memories, if the first processor confirms that the respective program is not valid, the first processor gives notification about detection of alteration in a program.
8. The information processing apparatus according to claim 1 , wherein
each of the first control program, the second control program, and the activation program stored in the one or more non-volatile memories is provided with electronic signature information used to verify a program.
9. The information processing apparatus according to claim 1 , wherein
the one or more non-volatile memories further store an OS (Operating System), and
the first processor further verifies the OS stored in the one or more non-volatile memories before verification of the second control program.
10. A method for controlling an information processing apparatus comprising: a first processor; a second processor; a printer configured to print an image on a sheet; an image processing circuit configured to perform negotiation with the printer; a storage controller configured to control a non-volatile storage; and one or more non-volatile memories which store a first control program and an activation program to be executed by the first processor, and a second control program to be executed by the second processor, the method comprising:
the first processor verifying the second control program stored in the one or more non-volatile memories, which is a program for controlling the image processing circuit that communicates with the printer via a communication line for the negotiation, and verifying the activation program stored in the one or more non-volatile memories, which is a program for activating the second processor by transferring the verified second control program to a volatile memory associated with the second processor and releasing a reset status of the second processor, and
after completing verification of the second control program and the activation program, the first processor verifying the first control program stored in the one or more non-volatile memories, which is a program for executing initialization of the storage controller.
11. A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute a method for controlling an information processing apparatus comprising: a first processor; a second processor; a printer configured to print an image on a sheet; an image processing circuit configured to perform negotiation with the printer; a storage controller configured to control a non-volatile storage; and one or more non-volatile memories which store a first control program and an activation program to be executed by the first processor, and a second control program to be executed by the second processor, the method comprising:
the first processor verifying the second control program stored in the one or more non-volatile memories, which is a program for controlling the image processing circuit that communicates with the printer via a communication line for the negotiation, and verifying the activation program stored in the one or more non-volatile memories, which is a program for activating the second processor by transferring the verified second control program to a volatile memory associated with the second processor and releasing a reset status of the second processor, and
after completing verification of the second control program and the activation program, the first processor verifying the first control program stored in the one or more non-volatile memories, which is a program for executing initialization of the storage controller.