Information processing apparatus and control method for selectively supplying power and clocks to module circuits used for verification

An information processing apparatus comprising:

• a first storage circuit that stores a first program;
• a second storage circuit that stores a second program;
• a notification device that notifies a user of information;
• a first control circuit that executes the first program stored in the first storage circuit, and performs a verification of validity of the second program stored in the second storage circuit;
• a second control circuit that executes the second program after it is determined to be valid as a result of the verification by the first control circuit;
• and
• a clock control circuit that controls supply of at least one module circuit clock to a corresponding module circuit of a plurality of module circuits, the plurality of module circuits included in a plurality of blocks, the plurality of blocks including a first block having a first module circuit and a second module circuit, the first module circuit used for the verification by the first control circuit and controlling a notification by the notification device based on the verification by the first control circuit, and the second module circuit not used for the verification by the first control circuit, wherein
• while the second program is verified by the first control circuit,
• the first control circuit causes the clock control circuit to supply a first module circuit clock to the first module circuit of the first block and to not supply a second module circuit clock to the second module circuit of the first block.

A control method of an information processing apparatus, the information processing apparatus comprising:

• a first storage circuit that stores a first program;
• a second storage circuit that stores a second program;
• a notification device that notifies a user of information;
• a first control circuit that executes the first program stored in the first storage circuit, and performs a verification of validity of the second program stored in the second storage circuit;
• a second control circuit that executes the second program after it is determined to be valid as a result of the verification by the first control circuit;
• a power supply control circuit that controls supply of power to a plurality of blocks including a first block having a first module circuit and a second module circuit, the first module circuit used for the verification by the first control circuit and controlling a notification by the notification device based on the verification by the first control circuit, and the second module circuit not used for the verification by the first control circuit;
• and
• a clock control circuit that controls supply of at least one module circuit clock to a corresponding module circuit of a plurality of module circuits, the plurality of module circuits included in the plurality of blocks, wherein the control method comprises:
• while the second program is verified by the first control circuit,
• causing, by the first control circuit, the power supply control circuit to supply power to the first block, the first block including the first module circuit used for the verification by the first control circuit, and to not supply power to a second block, the second block not being used for the verification by the first control circuit, among the plurality of blocks, and
• causing, by the first control circuit, the clock control circuit to supply a first module circuit clock to the first module circuit of the first block and to not supply a second module circuit clock to the second module circuit of the first block.

A control method of an information processing apparatus, the information processing apparatus comprising:

• a first storage circuit that stores a first program;
• a second storage circuit that stores a second program;
• a notification device that notifies a user of information;
• a first control circuit that executes the first program stored in the first storage circuit, and performs a verification of validity of the second program stored in the second storage circuit;
• a second control circuit that executes the second program after it is determined to be valid as a result of the verification by the first control circuit;
• and
• a clock control circuit that controls supply of at least one module circuit clock to a corresponding module circuit of a plurality of module circuits, the plurality of module circuits included in a plurality of blocks, the plurality of blocks including a first block having a first module circuit and a second module circuit, the first module circuit used for the verification by the first control circuit and controlling a notification by the notification device based on the verification by the first control circuit, and the second module circuit not used for the verification by the first control circuit, wherein the control method comprises:
• while the second program is verified by the first control circuit, causing, by the first control circuit, the clock control circuit to supply a first module circuit clock to the first module circuit of the first block and to not supply a second module circuit clock to the second module circuit of the first block.