JP6064635B2 - Information processing apparatus, control method for information processing apparatus, and control program - Google Patents

Description

  The present invention relates to an information processing apparatus, a control method for the information processing apparatus, and a control program.

  When a notebook personal computer, in other words, a PC is used outdoors, the drive time becomes a problem. The drive time of the PC outdoors depends on the capacity of the battery mounted on the PC and the power saving function of the PC. In order to extend the drive time of the PC with the battery, the PC has a function of shifting to a power saving mode that is an operation mode in which power consumption is suppressed.

  For example, an adapter that accommodates a battery with a small power capacity is provided, the adapter is attached to an electronic device body that has a battery case that accommodates a battery with a large power capacity, and means for detecting this attachment is provided in the electronic equipment body It has been proposed to restrict the operation of a part of the function of an electronic device, for example, a printing unit that is heavily loaded when the adapter is attached.

  Further, the BATTERY INFORMATION is transmitted from the CD-R / RW drive device to the host computer, and the host computer stores the BATTERY INFORMATION based on the current operation status and the operation continuation time corresponding to the remaining battery level. It is proposed that the power saving mode is set, and depending on the setting of the power saving mode, the recording speed / access speed is lowered, the volume of the reproduced sound is limited, the luminance of the display unit is lowered, or switching to non-display is performed. .

  Also, the time setting input unit that calculates and calculates the time that the calculation / control unit can operate with the remaining battery level from the remaining battery level from the remaining battery level detection unit and the current power consumption value from the power consumption measurement unit. If the calculation / control unit determines that the operable time due to the remaining battery level is short relative to the time set by the operator, the operation performance is lowered to reduce the power consumption of the CPU, display device and other devices, Further, it has been proposed to perform control so as to improve the operation performance when it is determined that the remaining operation possible time is longer.

Japanese Patent Laid-Open No. 5-22859 JP 2001-31338 A JP 11-259183 A

  Due to the user's desire to reduce the weight of a portable notebook PC, a PC equipped with a lightweight battery is provided. Since the capacity of a battery is reduced in proportion to the weight of a lightweight battery, the driving time of a PC equipped with a lightweight battery is further shortened. Therefore, even in a PC equipped with such a lightweight battery, as described above, the PC determines the remaining amount of the battery by itself and shifts to a predetermined power saving mode to suppress the consumption cost. The PC drive time can be increased.

  However, since the capacity of the light battery is originally small, the power saving mode may be shifted to an early stage after the start of use of the PC. In this case, a specific device that the user wants to use cannot be used. On the other hand, a user who mounts a lightweight battery on a PC gives priority to reducing the weight of the PC after understanding that the capacity of the battery is small. For such users, limiting the use of the device may be a major limitation.

  An object of the present invention is to provide an information processing apparatus capable of selecting a power saving state according to the size of a battery.

According to one aspect, the information processing device includes a non-volatile storage device that stores a basic input / output program that is a program executed in response to power-on of the information processing device, a CPU that executes the basic input / output program, A battery for supplying power to the information processing device, a power control unit for controlling the battery, a system controller for controlling the information processing device, and a basic input / output program, which are predetermined for each of a plurality of battery sizes A control table that stores control parameters, a setting table that is provided in the system controller and in which control parameters of the information processing apparatus are set, and a battery that is different from the battery, and supplies power to a circuit in which the setting table is provided As a result, after the power of the information processing apparatus is shut off, And a dedicated battery that holds the over data. The basic input / output program executed in the CPU acquires the size of the battery from the power supply control unit, selects a control parameter of the information processing apparatus determined in advance according to the acquired size from the control parameter of the control table Acquire and set the acquired control parameters in the setting table .

  According to one aspect, the information processing apparatus can select a power saving state according to the size of the battery.

It is a figure which shows an example of information processing apparatus. It is explanatory drawing of the external appearance of information processing apparatus. It is explanatory drawing of a power saving process. It is a figure which shows an example of BIOS. It is explanatory drawing of a power saving process. It is explanatory drawing of a power saving process. It is explanatory drawing of a power saving process. It is explanatory drawing of a power saving process. It is an example of a BIOS processing flow. It is an example of a power saving process flow. It is an example of a power saving process flow. It is explanatory drawing of a power saving process. It is explanatory drawing of a power saving process. It is an example of a power saving process flow.

  FIG. 1 is a diagram illustrating an example of an information processing apparatus.

  The information processing apparatus is, for example, a notebook personal computer, in other words, a notebook PC 100. The information processing apparatus is not limited to the notebook PC 100, and may be, for example, a tablet computer, a portable information terminal, or the like, and may be any information processing apparatus that can be operated by the battery 51 described later.

  The notebook PC 100 includes a CPU (Central Processing Unit) 1, a system controller 2, a memory 3, a flash memory 4, a power supply controller 5, a disk controller 6, a graphics controller 7, an input / output controller 8, And a USB (Universal Serial Bus) host controller 9. The system controller 2 is connected to the CPU 1 and the memory 3. The system controller 2 is connected to the flash memory 4, the power control unit 5, the disk controller 6, the graphics controller 7, the input / output controller 8, and the USB host controller 9 via the bus 10. For example, an expansion bus 11 such as PCI Express or PCI is connected to the bus 10.

  The system controller 2 includes a setting table 21 that stores information used for power saving processing. The flash memory 4 stores a BIOS (Basic Input / Output System, basic input / output system) 40. The BIOS 40 is firmware that initializes the PC and performs various settings, in other words, a basic input / output program. The BIOS 40 includes a control table 41 that stores information used for power saving processing. The setting table 21 is generated by reading a part of the control table 41 as will be described later. A battery 51 is connected to the power supply control unit 5 via a connection line 53. The power control unit 5 is connected to the system controller 2 via a dedicated signal line 12 that is different from the bus 10. A hard disk 61 is connected to the disk controller 6. A display 71 is connected to the graphics controller 7. A keyboard 81 is connected to the input / output controller 8. A plurality of USB ports 91 are connected to the USB host controller 9. Each of the plurality of USB ports 91 is used for connecting various devices to the notebook PC 100.

  The system controller 2 controls the entire notebook PC 100. When the power of the notebook PC 100 is turned on by the user, the BIOS 40 stored in the flash memory 4 is read sequentially from the top and loaded into the CPU 1. By executing the BIOS 40, the CPU 1 reads an operating system (OS) that is a control program from the hard disk 61, makes it resident in the memory 3 that is the main memory, and starts the OS.

  By executing the BIOS 40, the CPU 1 acquires the size of the battery 51 from the power supply control unit 5 that controls the battery 51, as will be described later. Then, the CPU 1 executes the BIOS 40 to set control parameters of the notebook PC 100 that are determined in advance according to the acquired size of the battery 51. The set control parameters are various control parameters related to the power consumption of the PC 100, for example. Specifically, a portion corresponding to the acquired size of the battery 51 is read from the control table 41 included in the BIOS 40 and set in the setting table 21 of the system controller 2. The setting table 21 may be provided in addition to the system controller 2.

  The CPU 1 controls the computer 1 in accordance with the OS resident on the memory 3. The CPU 1 executes an application program on the memory 3. For example, the application program is stored in a recording medium such as a CD-ROM or DVD, input from the recording medium to the hard disk 61 via a CD-ROM drive or DVD drive, and loaded from the hard disk 61 to the memory 3.

  The disk controller 6 controls the hard disk 61 according to an instruction from the CPU 1 via the system controller 2 and executes input / output of various programs and various data. The graphics controller 7 controls the display 71 in accordance with instructions from the CPU 1 via the system controller 2 and executes various screen displays. The input / output controller 8 controls the keyboard 81 in accordance with an instruction from the CPU 1 via the system controller 2 and executes input from the keyboard 81. The USB host controller 9 controls the plurality of USB ports 91 in accordance with instructions from the CPU 1 via the system controller 2 and executes input / output with respect to various devices connected to the plurality of USB ports 91. For example, a mouse, a printer, a transmission / reception device, and the like are connected to the USB port 91.

  FIG. 2 is an explanatory diagram of the appearance of the information processing apparatus.

  The notebook PC 100 includes an upper housing 101 and a lower housing 102 as shown in FIG. The upper housing 101 and the lower housing 102 are provided to be foldable with respect to each other. The upper casing 101 is provided with a display 71, and the lower casing 102 is provided with a keyboard 81.

  The notebook PC 100 includes a battery 51 as shown in FIG. The battery 51 is detachably attached to the bottom surface of the lower housing 102, for example, from the lower housing 102. In other words, the notebook PC 100 is a computer to which the battery 51 can be connected. The connection location of the battery 51 to the notebook PC 100 is not limited to the bottom surface of the lower housing 102, and may be, for example, the side surface of the lower housing 102.

  The battery 51 is connected to the power supply control unit 5 via the connection line 53. The battery 51 is a rechargeable secondary battery, for example, a lithium ion battery. The battery 51 is charged when, for example, the notebook PC 100 is connected to a commercial power source, and when the notebook PC 100 is not connected to a commercial power source, the battery 51 is supplied with power to the entire notebook PC 100 or a predetermined range. Supply.

  As the battery 51, for example, a battery having a maximum capacity of 6000 mAh (milliampere hour) and a battery having a maximum capacity of 3000 mAh are present as products corresponding to the notebook PC 100. As the size of the battery 51, the maximum capacity of the battery 51 is used. For example, the battery 51 having a size of 6000 mAh is a standard battery, and the battery 51 having a maximum capacity of 3000 mAh is a small size battery.

  The size of the battery 51 is not limited to two types, and the size of the battery 51 is not limited to 6000 mAh and 3000 mAh. For example, a plurality of types of batteries 51 such as 10,000 mAh, 6000 mAh, 3000 mAh, and 1500 mAh may be connectable to the notebook PC 100.

  FIG. 3 is an explanatory diagram of the power saving process. FIG. 3 shows a portion related to the power saving control of the battery 51 in the notebook PC 100 of FIG.

  For example, when the notebook type PC 100 is connected to a commercial power source, the power source control unit 5 operates with power supplied from the commercial power source via the stabilized power source, and the notebook type PC 100 is not connected to the commercial power source. In some cases, the operation is performed by the power supplied from the battery 51. When both the commercial power source and the battery 51 are available, the operation is performed by the power supplied from the commercial power source via the stabilized power source.

  The power supply control unit 5 is a microcomputer, for example, and is connected to the battery 51 via the connection line 53. The connection line 53 includes, for example, a power supply line that supplies power to the power supply control unit 5 and a signal line. The signal lines include, for example, a battery data line BTDAT and a battery clock signal line BTCLK. By directly connecting the power supply control unit 5 and the battery 51 with a power supply line, power can be supplied from the commercial power supply or the battery 51 to the power supply control unit 5 immediately after the notebook PC 100 is turned on.

  For example, when the power of the notebook PC 100 is turned on, the power control unit 5 determines the size of the battery 51 from the battery 51 via the signal line of the connection line 53 independently of the processing executed by the BIOS 40. The identification number of the battery 51 is read. Therefore, the signal line of the connection line 53 is a signal line for notifying the size of the battery 51, the identification number of the battery 51, and the like from the battery 51 to the power supply control unit 5. The power supply control unit 5 stores the read size of the battery 51, the identification number of the battery 51, and the like in the register 52 having a predetermined address.

  For example, when the battery 51 is a standard battery having a size of 6000 mAh, the value “6000” is read as the size of the battery 51 and stored in the register 52. When the battery 51 is a small battery having a size of 3000 mAh, the value “3000” is read as the size of the battery 51 and stored in the register 52.

  Note that, for example, when the battery 51 is connected to the notebook PC 100, the power control unit 5 determines the size of the battery 51 from the battery 51 via the signal line of the connection line 53 independently of the processing executed by the BIOS 40. The identification number of the battery 51 may be read.

  When the notebook PC 100 is powered on, the system controller 2 reads the BIOS 40 stored in the flash memory 4 in order from the top and loads it into the CPU 1. The CPU 1 executes the BIOS 40. The BIOS 40 executed in the CPU 1 executes the following processing.

  The BIOS 40 acquires the size of the battery 51 from the power supply control unit 5. The power control unit 5 is connected to the system controller 2 via a dedicated signal line 12 different from the bus 10 of the notebook PC 100. Therefore, even before the initialization of the bus 10, the CPU 1 can access the power supply control unit 5 through the system controller 2 and the dedicated signal line 12. The dedicated signal line 12 is a 4-bit signal line such as AD [3: 0]. On the other hand, the system controller 2 holds the address of the register 52 that stores the size of the battery 51 read by the power control unit 5. As a result, the BIOS 40 requests the system controller 2 to perform I / O access to the register 52 in response to the power-on of the notebook PC 100, whereby the power supply control unit is connected via the system controller 2 and the dedicated signal line 12. 5, the size of the battery 51 is obtained from the register 52. The BIOS 40 holds the acquired size of the battery 51 in, for example, a predetermined register of the CPU 1 used by the BIOS 40. The acquired size of the battery 51 is used to determine the size of the battery 51.

  Acquisition of the size of the battery 51 from the power supply control unit 5 is executed prior to initialization of various devices mounted on the notebook PC 100. Specifically, prior to initialization of the CPU 1, the memory 3, the expansion bus 11, the display 71 including the graphics controller 7 and a plurality of devices, the size of the battery 51 is acquired from the power supply control unit 5. Thereby, the control parameters of the notebook PC 100 can be set for each of the CPU 1, the memory 3, the expansion bus 11, the graphics controller 7, and the plurality of devices according to the acquired size.

  Then, the BIOS 40 sets a predetermined control parameter according to the acquired size of the battery 51. Specifically, the BIOS 40 provides a setting table 21 for storing control parameters in the system controller 2, and sets the control parameters of the notebook PC 100 according to the setting table 21.

  Here, the control parameters are stored in advance in the control table 41 that stores information used for the power saving process in the BIOS 40. In other words, the control table 41 includes control parameters determined in advance for each of the plurality of sizes of the battery 51, and the control parameters are power saving control parameters. The control parameter is a value that defines the operation of each of the CPU 1, the memory 3, the expansion bus 11, the graphics controller 7, and the plurality of devices, for example. Accordingly, the BIOS 40 determines in advance values that define the operations of the CPU 1, the memory 3, the expansion bus 11, the graphics controller 7, and the plurality of devices in accordance with each of the plurality of batteries 51 that can be connected to the notebook PC 100. Store.

  On the other hand, the system controller 2 includes a CMOS circuit unit 20 and a dedicated battery 22 different from the battery 51. The setting table 21 is provided in the CMOS circuit unit 20. The CMOS circuit unit 20 is a predetermined circuit to which power is supplied from the dedicated battery 22. The dedicated battery 22 is a rechargeable secondary battery that is smaller than the battery 51, for example, a lithium ion battery. The dedicated battery 22 is charged, for example, when the notebook PC 100 is connected to a commercial power supply, and supplies power to the CMOS circuit unit 20 when the notebook PC 100 is not connected to a commercial power supply.

  The dedicated battery 22 supplies power to the CMOS circuit unit 20 when the power of the notebook PC 100 is cut off. Since the power consumption of the CMOS circuit unit 20 is extremely small, even if the power of the notebook PC 100 is cut off, the data written in the CMOS circuit unit 20 is retained until the notebook PC 100 is turned on again. Note that the battery 51 may be used instead of the dedicated battery 22 to supply power from the battery 51 to the CMOS circuit unit 20 when the power of the notebook PC 100 is shut off.

  The control parameter is stored in the setting table 21 that stores information used for power saving processing in the system controller 2. In other words, the setting table 21 is a predetermined control parameter and includes a control parameter corresponding to the acquired size of the battery 51.

  The BIOS 40 selects and acquires a predetermined control parameter according to the acquired size of the battery 51 from the control parameters for each of the plurality of sizes of the battery 51 included in the control table 41, and sets the setting table 21. Set to. Therefore, the system controller 2 stores values that define the operations of the CPU 1, the memory 3, the expansion bus 11, the graphics controller 7, and the plurality of devices according to the acquired size of the battery 51.

  Then, the BIOS 40 executes at least initialization of the CPU 1 based on the control parameters set in the system controller 2, in other words, based on the setting table 21. Specifically, the BIOS 40 executes initialization of the CPU 71, the memory 3, the expansion bus 11, the display 71 including the graphics controller 7, and a plurality of devices according to the acquired size of the battery 51.

  Thereafter, the BIOS 40 loads the OS of the notebook PC 100 into the memory 3 and starts up. Accordingly, the BIOS 40 is a program that is executed first when the notebook PC 100 is turned on, and is executed before the OS of the notebook PC 100.

  FIG. 4 is a diagram illustrating an example of the BIOS.

  As shown in FIG. 4A, the BIOS 40 includes a control table 41, an SEC (Security) processing unit 42, a PEI (Pre EFI Initialization) processing unit 43, a DXE (Driver Execution Environment) processing unit 44, and a boot. A manager 45, an OS boot loader 46, and setup display data 47 are included. The PEI processing unit 43 includes a power saving processing unit 431, and the DXE processing unit 44 includes a power saving processing unit 441.

  The control table 41 actually includes a plurality of unit control tables. Specifically, the control table 41 includes a unit control table for each size of the battery 51 that can be connected to the notebook PC 100. For example, when a standard battery and a small battery can be connected to the notebook PC 100, a standard battery control table 411 and a small battery control table 412 are included in the control table 41 as unit control tables. . The number of unit control tables included in the control table 41 is not limited to two, and n unit control tables are included when n batteries 51 can be connected to the notebook PC 100.

  The SEC processing unit 42, the PEI processing unit 43, and the DXE processing unit 44 execute initialization of the platform of the notebook PC 100. The SEC processing unit 42, the PEI processing unit 43, the DXE processing unit 44, and the boot manager 45 execute a power-on self test (POST), that is, a self-diagnosis program at startup.

  The SEC processing unit 42 executes setting processing for security of the notebook PC 100. The PEI processing unit 43 executes initialization processing and setting processing for the CPU 1, the memory 3, the expansion bus 11, and the graphics controller 7. The DXE processing unit 44 executes initialization processing and setting processing for a plurality of devices such as a LAN (Local Area Network), an optical drive, Bluetooth (registered trademark), a wireless LAN, and a Cardbus. The boot manager 45 executes processing including OS startup preparation. Thereafter, the OS boot loader 46 starts the OS.

  The setup display data 47 is data for displaying the BIOS setup menu screen on the display 71. The screen of the BIOS setup menu is a screen 711 as shown in FIG. 8, for example.

  As shown in FIG. 4B, the BIOS 40 includes one BFV (Boot Firmware Volume) 49 and a plurality of FVs (Firmware Volume) 410 in order from the top. The BFV 49 is a module executed first when the notebook PC 100 is turned on. The FV 410 is a module that executes initialization of devices mounted on the notebook PC 100 including the CPU 1 and the USB port 91. Each of the BFV 49 and the FV 410 is a set of execution codes of the BIOS 40.

  For example, the SEC processing unit 42 is a set of program execution codes when stored in the flash memory 4, and constitutes the SEC processing unit 42 by being executed by the CPU 1. The same applies to the PEI processing unit 43, the DXE processing unit 44, the boot manager 45, and the OS boot loader 46.

  The SEC processing unit 42 includes, for example, a head BFV 49 and a plurality of FVs 410 subsequent thereto. The PEI processing unit 43, the DXE processing unit 44, the boot manager 45, and the OS boot loader 46 are each configured by, for example, a plurality of FVs 410, and are described in the BIOS 40 in this order, in other words, in the order of execution. In practice, the control table 41 is described in the PEI processing unit 43 following the location that refers to the control table 41 or after the OS boot loader 46. In practice, the setup display data 47 is described in the PEI processing unit 43 subsequent to the location referring to the setup display data 47 or after the control table 41.

  5 to 8 are explanatory diagrams of the power saving process, and show details of the power saving process executed by the BIOS 40.

  FIG. 5 shows an example of the control table 41 included in the BIOS 40. 5A shows a standard battery control table 411, for example, and FIG. 5B shows a small battery control table 412, for example. The control table 411 and the control table 412 are included in the BIOS 40 as a part of the BIOS 40.

  The control table 41, in other words, each of the control table 411 and the control table 412 includes the CPU operating frequency upper limit, the number of CPU cores, CPU multithreading, PCI Express ASPM (Active State Power Management), memory as control parameters of the notebook PC 100. The clock, Clock Run, graphics frequency upper limit, C-State, LAN, optical drive, Bluetooth, wireless LAN, and Cardbus are stored.

  The CPU operating frequency upper limit, the number of CPU cores, CPU multithreading, and C-State are control parameters for the CPU 1. The memory clock, Clock Run, is a control parameter for the memory 3. PCI Express ASPM is a control parameter for PCI Express. The graphics frequency upper limit is a control parameter for graphics. LAN, optical drive, Bluetooth, wireless LAN, and Cardbus are control parameters for various buses.

  The CPU operating frequency upper limit is an upper limit value of the operating frequency of the CPU 1. The CPU operating frequency upper limit is set to 2.0 GHz, for example. The number of CPU cores is the number of operating cores when the CPU 1 is multi-core. The number of CPU cores is set to “2”, for example. The CPU multithreading is a multithread operation in the case where the multithread operation is possible on the CPU 1. CPU multithreading is set to be valid or invalid, for example.

  PCI Express ASPM is a setting related to power saving in PCI Express. PCI Express ASPM is set to one of the states such as L0s and L1, for example.

  The memory clock is a value of the operating frequency of the memory 3. The memory clock is set to 1066 MHz, for example.

  The Clock Run is a power saving function for stopping the supply of a clock to a predetermined device connected to the expansion bus 11 when, for example, a predetermined value is determined. Clock Run is set to either valid or invalid, for example.

  The graphics frequency upper limit is an upper limit value of the operating frequency of the graphics controller 7. The graphics frequency upper limit is set to 600 MHz, for example.

  C-State is a power saving function that turns off the power or stops the operation when the CPU 1 is idle. C-State is set to any state such as C1E, C3, and C6, for example. The C-State may be a C2 state, a C4 state, or the like.

  LAN, optical drive, Bluetooth, wireless LAN, and Cardbus are devices mounted on the motherboard of the notebook PC 100. LAN, optical drive, Bluetooth, wireless LAN, and Cardbus are set to be valid or invalid, for example.

  For example, when the CPU operating frequency upper limit is compared between 2.0 GHz and 1.0 GHz, the power consumption at 2.0 GHz is large and the power consumption at 1.0 GHz is small. Therefore, the CPU operating frequency upper limit is set to 2.0 GHz with large power consumption in the standard battery control table 411, and is set to 1.0 GHz with low power consumption in the small size battery control table 412. Similarly, for the other control parameters, a state in which the power consumption is large is set in the standard battery control table 411, and a state in which the power consumption is small is set in the small size battery control table 412.

  In the control table 411 and the control table 412 shown in FIGS. 5A and 5B, names corresponding to BIOS setup menu items such as “CPU operating frequency upper limit” are used as menu items. As a result, the current set value can be known for the control parameter.

  The BIOS 40 obtains the setting table 21 shown in FIG. 7 from the control table 41 shown in FIG. At this time, the BIOS 40 converts the control table 41 into the setting table 21 in accordance with the conversion rule shown in FIG. As a result, the setting table 211 is generated from the control table 411 and the setting table 212 is generated from the control table 412.

  For example, as shown in FIG. 6, “CPU_Number_Of_Cores” is used as the item name of “CPU core number”. As the value of “CPU core number”, when the number of cores in the control table 41 is “1 (core)”, the value in the setting table 21 is set to “1”. Thereby, the number of cores of the CPU 1 is set to “1”. Similarly, the other control parameters are converted from the contents of the control table 41 to the contents of the setting table 21 in accordance with FIG.

  FIG. 7 shows an example of the setting table 21 stored in the CMOS circuit unit 20. 7A shows a standard battery setting table 211, for example, and FIG. 7B shows a small battery setting table 212, for example. The setting table 21, in other words, the setting table 211 and the setting table 212 include the same items as the control table 411 and the control table 412 as control parameters, respectively.

  For example, if the size of the battery 51 connected to the notebook PC 100 is standard, the BIOS 40 acquires the value “6000” as the size of the battery 51. Therefore, the BIOS 40 sets the value of the setting table 21 to the content according to the content of the standard battery control table 411. In other words, the standard battery setting table 211 is stored in the setting table 21.

  Conversely, if the size of the battery 51 connected to the notebook PC 100 is small, the BIOS 40 acquires the value “3000” as the size of the battery 51. Therefore, the BIOS 40 sets the value of the setting table 21 to the content according to the content of the small size battery control table 412. In other words, the setting table 212 for the small battery is stored in the setting table 21.

  The setting table 21 stores both the standard battery setting table 211 and the small battery setting table 212, and either one may be selected and used according to the acquired size of the battery 51. Good.

  The BIOS 40 may use only the control table 41 without using the setting table 21. Conversely, the BIOS 40 may use only the setting table 21 without using the control table 41. Further, the control table 41 may be provided not in the BIOS 40 but in a nonvolatile storage device other than the flash memory 4, for example, a flash memory provided separately from the flash memory 4. Further, the setting table 21 may be provided other than the CMOS circuit unit 20 or may be provided other than the system controller 2.

  For example, it is assumed that the acquired size of the battery 51 is a small size. In this case, the BIOS 40 refers to the CPU operating frequency upper limit of the small size battery control table 412 and obtains that it is set to 1.0 GHz. Then, the BIOS 40 uses “CPU_Upper_Limit” as the item name and stores “1” as the corresponding value as shown in FIG. The CPU operating frequency upper limit of the setting table 212 is set. The same applies to other control parameters.

  Thereafter, the BIOS 40 uses the CPU 1 frequency stage setting function called P-State based on the setting table 212 to initialize, in other words, control the operating frequency of the CPU 1. P-State is described by ASL (ACPI Source Language), which is a language that defines the operation of ACPI (Advanced Configuration and Power Interface), for example. Thereby, for example, when the maximum value of the operating frequency of the CPU 1 is 2.5 GHz, the operating frequency is set to 1.0 GHz, and power consumption is suppressed.

  The BIOS 40 also sets “1” in the setting table 212 for the CPU core, for example, according to the control table 412. Then, the BIOS 40 uses the model specific register (Model Specific Register, MSR) of the CPU 1 based on the setting table 212 to control the number of cores of the CPU 1. Thereby, for example, when the CPU 1 has 4 cores, 3 cores are stopped.

  The BIOS 40 also sets “0” in the setting table 212 according to the control table 412 for CPU multithreading, for example. Then, the BIOS 40 disables CPU multithreading based on the setting table 212, in other words, disables the CPU multithreading.

  The BIOS 40 also sets “0” in the setting table 212 according to the control table 412 for the PCI Express ASPM, for example. Then, the BIOS 40 controls PCI Express using the PCI Express configuration register based on the setting table 212. Thereby, for example, PCI Express operates at L1 / L0s.

  The BIOS 40 also sets “0” in the setting table 212 according to the control table 412 for the memory clock, for example. Then, the BIOS 40 controls the memory clock using a register of the memory controller included in the CPU 1 based on the setting table 212. Thereby, for example, the memory clock is set to 667 MHz of DDR3 (Double Data Rate 3). When the initialization of the memory 3 is started, the BIOS 40 first reads memory clock setting information from the SPD (Serial Presence Detect), which is a ROM mounted in the memory 3, via the SMBus. As a result, the BIOS 40 can obtain information on the memory clock that can be set.

  The BIOS 40 also sets “0” in the setting table 212 in accordance with the control table 412 for the graphics frequency upper limit, for example. Then, the BIOS 40 controls the graphics frequency upper limit using the register of the graphics controller 7 based on the setting table 212. Thereby, for example, the graphics frequency upper limit is set to 300 MHz.

  The BIOS 40 also sets “2” in the setting table 212 according to the control table 412 for C-State, for example. Then, the BIOS 40 controls C-State based on the setting table 212. Thereby, for example, C-State operates in C1E / C3 / C6.

  The BIOS 40 also sets “0” in the setting table 212 according to the control table 412 for LAN, optical drive, Bluetooth, wireless LAN, and Cardbus, for example. Then, the BIOS 40 uses the power on / off control function using the GPIO (General Purpose I / O) signal line included in the system controller based on the setting table 212, and the LAN, optical drive, Bluetooth , Disable wireless LAN and Cardbus. For example, in the case of Bluetooth, if the power control signal GPIO_BT is at a high level, the power is turned on, and if it is at a low level, the power is turned off. Thereby, for example, the power supply can be cut off for a wireless LAN module, Bluetooth, or USB-connected camera.

  FIG. 8 shows an example of a BIOS setup menu screen.

  The screen 711 is included in the BIOS 40 as a part of the setup display data 47 and is displayed on the display 71 by the BIOS 40. Specifically, the screen 711 can be displayed after the graphics initialization by the PEI processing unit 43. The BIOS 40, for example, when a predetermined function key for displaying a BIOS setup menu, in other words, a setup key is depressed within a predetermined period after execution of graphics initialization by the PEI processing unit 43, the BIOS is displayed. A screen 711 as a setup menu is displayed.

  On the screen 711, an item “power saving automatic setting” is provided. For example, at the time of shipment of the notebook PC 100, the “power saving automatic setting” is set to “use”. Accordingly, the BIOS 40 reads either the control table 411 or the control table 412 from the control table 41 according to the size of the battery 51, and stores the setting table 211 or the setting table 212 in the setting table 21. Thereby, the control parameter can be set according to the size of the battery 51.

  On the screen 711, for example, when the Enter key is pressed while the cursor is positioned at “current setting”, the BIOS 40 displays the current setting state. Specifically, the BIOS 40 displays the contents of the setting table 211 or the setting table 212 set as the setting table 21 on the display 71.

  The user may be able to change the contents of the setting table 21 from, for example, the BIOS setup menu. Further, the user may be able to change the contents of the control table 41 from, for example, the BIOS setup menu.

  FIG. 9 is an example of the BIOS processing flow.

  The SEC processing unit 42, the PEI processing unit 43, the DXE processing unit 44, and the boot manager 45 execute POST. The SEC process and the PEI process correspond to the first half of POST, for example. The DXE process and the process by the boot manager 45 correspond to, for example, the second half of POST. The SEC processing unit 42, the PEI processing unit 43, and the DXE processing unit 44 execute initialization of the platform of the notebook PC 100.

  When the power of the notebook PC 100 is turned on by the user (step S11), the BIOS 40 of the flash memory 4 is loaded into the CPU 1 and executed via the system controller 2 in order from the top.

  Specifically, first, the SEC processing unit 42 of the BIOS 40 executed by the CPU 1 executes SEC processing (step S12). Next, the PEI processing unit 43 of the BIOS 40 executed by the CPU 1 executes PEI processing (step S13). Thereby, initialization of the system controller 2, the CPU 1, and the memory 3 is executed.

  Next, the DXE processing unit 44 of the BIOS 40 executed by the CPU 1 executes the DXE process (step S14). As a result, initialization of various buses and onboard devices including the Serial ATA connected to the USB port 91 and the expansion bus 11 is executed.

  Next, the boot manager 45 of the BIOS 40 executed by the CPU 1 executes processing including OS startup preparation (step S15). Thereafter, the OS boot loader 46 of the BIOS 40 executed by the CPU 1 is executed (step S16), and the OS boot loader 46 starts the OS (step S17).

  10 and 11 show an example of the power saving process flow, and show the power saving process executed by the BIOS 40 as a unit. 10 and 11 show steps S13 to S14 in FIG. 9 in detail.

  After step S12 of FIG. 9, the PEI processing unit 43 of the BIOS 40 executed by the CPU 1 starts PEI processing (step S21). First, the PEI processing unit 43 is connected to the power supply control unit 5 via the system controller 2 and the signal line 12. By executing the I / O access, the size of the battery 51 is read from the power supply control unit 5, and the size of the read battery 51 is checked and stored (step S22). Therefore, the acquisition of the size of the battery 51 is first executed in the PEI process, in other words, the POST.

  For example, in order to check the size of the acquired battery 51, the acquired size of the battery 51 is compared with the size of the battery 51 held in the setting table 21. Further, the acquired size of the battery 51 is held in a predetermined register of the CPU 1 used by the BIOS 40.

  Next, the PEI processing unit 43 switches the setting value set in the setting table 21 of the CMOS circuit unit 20 based on the acquired check result of the size of the battery 51 (step S23). Therefore, when the battery 51 of the notebook PC 100 is replaced, the setting value set in the setting table 21 is switched according to the acquired size of the battery 51.

  For example, if the acquired size of the battery 51 does not match the size of the battery 51 held in the setting table 21 in step S22, the PEI processing unit 43 switches the setting value set in the setting table 21. . Specifically, the PEI processing unit 43 reads either the control table 411 or the control table 412 from the control table 41 according to the acquired size of the battery 51, and reads the read control table 411 or control table 412. Is set in the setting table 21. Thereby, the setting table 211 or the setting table 212 is obtained. When the acquired size of the battery 51 matches the size of the battery 51 held in the setting table 21, the PEI processing unit 43 does not switch the setting value set in the setting table 21. In other words, the PEI processing unit 43 omits step S23.

  Next, the PEI processing unit 43 starts initialization of the CPU 1 (step S24). First, the power saving processing unit 431 determines whether the size of the battery 51 stored is a standard size or a small size. (Step S25). As described above, the size of the battery 51 is not limited to the standard size and the small size.

  When the size of the battery 51 is a standard size, the PEI processing unit 43 causes the power saving processing unit 431 to change the setting value of the CPU 1 according to the setting of the standard battery setting table 211 of the setting table 21 (step S26). . As a result, the CPU 1 operating frequency upper limit value, the number of cores, the number of CPU multithreading, and the C-State setting are changed in accordance with the standard battery setting table 211.

  When the size of the battery 51 is small, the PEI processing unit 43 changes the setting value of the CPU 1 by the power saving processing unit 431 according to the setting of the setting table 212 for the small battery in the setting table 21 (step S27). . As a result, the CPU 1 operating frequency upper limit value, the number of cores, the number of CPU multithreading, and the setting of C-State are changed to conform to the setting table 212 for small battery.

  Next, the PEI processing unit 43 executes various types of initialization processing of the CPU 1 other than the setting of the CPU 1 operating frequency upper limit value, the number of cores, the number of CPU multithreading, and the C-State (step S28). As a result, various settings for the CPU 1 other than the setting of the upper limit of the operating frequency of the CPU 1, the number of cores, the number of CPU multithreading, and the C-State are executed.

  Next, the PEI processing unit 43 starts initialization of the memory 3 (step S29). First, the size of the battery 51 stored by the power saving processing unit 431 is a standard size or a small size. (Step S210).

  When the size of the battery 51 is a standard size, the PEI processing unit 43 changes the setting value of the memory 3 according to the setting of the standard battery setting table 211 of the setting table 21 by the power saving processing unit 431 (step S211). ). As a result, the value of the memory clock that is the operation clock of the memory 3 is changed in accordance with the standard battery setting table 211.

  When the size of the battery 51 is small, the PEI processing unit 43 changes the setting value of the memory 3 according to the setting of the setting table 212 for the small battery in the setting table 21 by the power saving processing unit 431 (step S212). ). As a result, the value of the memory clock is changed to follow the small battery setting table 212.

  Next, the PEI processing unit 43 executes various types of initialization processing of the memory 3 other than the value of the memory clock (step S213). Thereby, for example, various timings, capacities, etc. of the memory 3 are set.

  Next, the PEI processing unit 43 starts initialization of the expansion bus 11, for example, PCI Express (step S214). First, the size of the battery 51 stored by the power saving processing unit 431 is a standard size. Whether the size is small or small (step S215).

  When the size of the battery 51 is the standard size, the PEI processing unit 43 changes the setting of the ASP of PCI Express according to the setting of the standard battery setting table 211 of the setting table 21 by the power saving processing unit 431 (Step S1). S216). Thereby, the setting of ASPM of PCI Express is changed to follow the standard battery setting table 211.

  When the size of the battery 51 is a small size, the PEI processing unit 43 changes the setting of the ASP of PCI Express according to the setting of the setting table 212 for the small size battery of the setting table 21 by the power saving processing unit 431 (step S217). Thus, the PCI Express ASPM setting is changed to follow the small battery setting table 212.

  Next, the PEI processing unit 43 executes various PCI Express initialization processes other than the PCI Express ASPM setting (step S218). Thereby, for example, setting of resources, addresses, etc. for PCI Express is executed.

  Next, the PEI processing unit 43 starts initialization of the graphics controller 7, in other words, graphics (step S219). First, the size of the battery 51 stored by the power saving processing unit 431 is the standard size. Or whether it is a small size (step S220).

  When the size of the battery 51 is a standard size, the PEI processing unit 43 causes the power saving processing unit 431 to change the graphics setting value according to the setting of the standard battery setting table 211 of the setting table 21 (step S221). ). As a result, the value of the graphics operating frequency upper limit is changed to follow the standard battery setting table 211.

  When the size of the battery 51 is a small size, the PEI processing unit 43 causes the power saving processing unit 431 to change the graphics setting value according to the setting of the setting table 212 for the small battery in the setting table 21 (step S222). ). As a result, the value of the graphics operating frequency upper limit is changed so as to follow the small battery setting table 212.

  Next, the PEI processing unit 43 executes initialization processing of various graphics other than the value of the graphics operating frequency upper limit (step S223). Thereby, for example, the setting of resources and output destinations for graphics is executed.

  Next, the DXE processing unit 44 of the BIOS 40 executed by the CPU 1 starts the DXE processing (step S224). First, the power saving processing unit 441 starts initialization of various buses such as SATA and USB. (Step S225), it is checked whether the size of the stored battery 51 is a standard size or a small size (Step S226).

  When the size of the battery 51 is the standard size, the DXE processing unit 44 changes the settings of various buses according to the setting of the standard battery setting table 211 of the setting table 21 by the power saving processing unit 441 (step S227). ). Accordingly, the settings of various buses such as LAN, optical drive, Bluetooth, wireless LAN, and Cardbus are changed according to the standard battery setting table 211, in other words, changed to be effective.

  When the size of the battery 51 is small, the DXE processing unit 44 changes the settings of various buses by the power saving processing unit 441 according to the setting of the setting table 212 for the small battery in the setting table 21 (step S228). ). Accordingly, the settings of various buses such as LAN, optical drive, Bluetooth, wireless LAN, and Cardbus are changed to follow the small battery setting table 212, in other words, invalid.

  As described above, the CPU 1, PCI Express, memory 3, and graphics controller 7 are set in the first half of POST after the notebook PC 100 is turned on. On the other hand, various devices mounted on the motherboard are set in the latter half of POST.

  Next, the DXE processing unit 44 executes other POST processing, which is processing other than the processing described above (step S229). As a result, settings for security of the notebook PC 100, settings for functions unique to the notebook PC 100, and the like are executed. Thereafter, the boot manager process is executed in step S15 of FIG.

  In the above example, as shown in FIG. 8, the setting table 21 having a predetermined content is selected according to the size of the battery 51. Although it is possible for the user to change the contents of the setting table 21 or the control table 41, the user needs to know about the BIOS setup menu, which is a burden on the user.

  12 to 14 show other examples of the power saving process. The example of FIGS. 12-14 shows the example which can change the content of the setting table 21 or the control table 41 easily even if it is a user who does not have knowledge about a BIOS setup menu.

  In the example of FIGS. 12 to 14, the BIOS 40 executed in the CPU 1 receives an input for instructing to change the control parameter displayed on the display 71. Specifically, the BIOS 40 receives an input for instructing to change the control parameter displayed on the display 71 after the initialization of the display 71 is performed. The BIOS 40 sets the control parameter changed according to the input for instructing the change in the system controller 2, and executes at least initialization of the CPU 1 based on the control parameter set in the system controller 2.

  In FIG. 12, a screen 712 is included in the BIOS 40 as a part of the setup display data 47 and is displayed on the display 71 by the BIOS 40. Specifically, the screen 712 can be displayed after the PEI processing unit 43 executes the graphics initialization. For example, the BIOS 40 displays a screen 712 as a BIOS setup menu when a predetermined setup key is depressed within a predetermined period after execution of graphics initialization by the PEI processing unit 43.

  In the screen 712, an item “Detailed power saving setting for each battery size” is provided. As described above, “Electrical power saving setting” is set to “Use”. For example, when the Enter key is pressed while the cursor is positioned at “Electric power saving setting for each detailed battery size”. The BIOS 40 displays a power saving setting screen 713 on the display 71 as shown in FIG.

  In FIG. 13, a screen 713 is included in the BIOS 40 as a part of the setup display data 47 and is displayed on the display 71 by the BIOS 40. On the screen 713, for example, control parameters included in the control table 411 for the standard size battery 51 and the control table 412 for the small size battery 51 are displayed. Thereby, the user can set the control parameter while referring to the contents of both the control table 411 and the control table 412. For example, even when the small battery 51 is connected, the user can change the upper limit value of the operating frequency of the CPU 1 from “1.0 GHz” to “2.0 GHz”. The same applies to other control parameters.

  Thus, the user can use the notebook PC 100 by customizing the contents of the setting table 21 to the contents that match his / her wishes. As described above, since the contents of the setting table 21 are held by the dedicated battery 22, the user can use the customized notebook PC 100 even when the power is turned on again after the shutdown. In addition, since the power saving state can be changed, in a PC equipped with a lightweight battery, the driving time can be extended as much as possible and a specific device can be used. The state can be selected.

  Note that the control parameter corresponding to the setting table 21 at that time may be highlighted on the screen 713 in FIG. Further, instead of the contents of both the control table 411 and the control table 412, only the control parameter corresponding to the setting table 21 at that time may be displayed.

  FIG. 14 is an example of a power saving process flow.

  The BIOS 40 executes steps S31 to S35 of FIG. 14 in parallel with the DXE process of FIG. 11 after the execution of step S223 of FIG.

  The BIOS 40 checks whether or not the DXE process is finished (step S31). When the DXE process ends, the BIOS 40 executes a boot manager process in step S15 of FIG.

  If the DXE process has not ended, the BIOS 40 checks whether or not a predetermined setup key has been pressed (step S32). If the predetermined setup key is not depressed, the BIOS 40 repeats step S31. Therefore, after executing step S223, the BIOS 40 waits for the user to depress a predetermined setup key until the DXE process ends. In addition, after execution of step S223, the BIOS 40 displays a screen on the display 71 indicating that a predetermined setup key can be depressed.

  When the setup key is pressed, the BIOS 40 displays a screen 712 as a BIOS setup menu shown in FIG. 12 (step S33), and checks whether or not a control parameter is input (step S34). If there is no control parameter input, the BIOS 40 repeats step S34.

  When the control parameter is input, the BIOS 40 changes the value stored in the setting table 21 according to the input control parameter (step S35). Thereafter, the BIOS 40 executes Step S24 of FIG.

  Note that after step S35, for example, the BIOS 40 changes the value stored in the control table 41 according to the input control parameter prior to the shutdown or when the notebook PC 100 is powered off. Thereby, the user can change the control table 41 by inputting the control parameter only once. Conversely, the BIOS 40 may not change the value stored in the control table 41.

  In step S35, the BIOS 40 may execute processing such as initialization of the CPU 1 by directly using the input control parameters without changing the values stored in the control table 41. In step S35, the BIOS 40 may change the value stored in the control table 41 in accordance with the input control parameter.

  As described above, the content of the setting table 21 is customized to the content that matches the user's wishes, the control parameter is set to the content that matches the user's wishes, and the user selects the notebook PC 100 having the performance that meets the user's wishes. Can be used. Further, even a user who does not have knowledge of the BIOS 40 or power saving setting can easily change the contents of the setting table 21. Further, for example, even when the power saving control utility depends on a specific OS version, the control parameter can be set regardless of this, and even when the OS is revised, the control parameter can be set regardless of this. Can be set. Further, for example, even if the power saving setting exists in the platform or the mounted device, the control parameter can be set regardless of this.

  As will be understood from the above description, the following embodiments are grasped.

(Supplementary Note 1) A non-volatile storage device that stores a basic input / output program that is a program executed in response to power-on of the information processing device;
A CPU for executing the basic input / output program;
A battery for supplying power to the information processing apparatus;
A power control unit for controlling the battery,
The basic input / output program executed in the CPU acquires the size of the battery from the power supply control unit, and sets control parameters of the information processing apparatus determined in advance according to the acquired size. Information processing apparatus.

(Supplementary note 2) The basic input / output program is executed prior to the operating system of the information processing apparatus, executes at least initialization of the CPU, and starts the operating system. Information processing device.

(Supplementary Note 3) The information processing apparatus further includes:
A system controller for controlling the information processing apparatus;
The information processing apparatus according to appendix 1, wherein the basic input / output program executed in the CPU is provided with a setting table for storing the control parameters in the system controller.

(Supplementary note 4) The basic input / output program executed in the CPU executes at least initialization of the CPU based on the control parameter set in the system controller. Information processing device.

(Supplementary Note 5) The system controller includes a dedicated battery different from the battery, and a predetermined circuit supplied with power from the dedicated battery,
The information processing apparatus according to appendix 3, wherein the control parameter is set in the predetermined circuit.

(Additional remark 6) The said power supply control part is connected to the said system controller via the exclusive line different from the bus | bath of the said information processing apparatus,
The basic input / output program executed in the CPU obtains the size of the battery from the power control unit via the system controller and the dedicated line in response to power-on of the information processing apparatus. The information processing apparatus according to supplementary note 1, which is characterized.

(Supplementary Note 7) The power supply control unit is connected to the battery via a power supply line that supplies power to the power supply control unit and a signal line that notifies the size of the battery to the power supply control unit. The information processing apparatus according to appendix 6, which is characterized.

(Supplementary note 8) The information according to supplementary note 1, wherein the basic input / output program stored in the non-volatile storage device includes the predetermined control parameter for each of the plurality of sizes of the battery. Processing equipment.

(Supplementary Note 9) The information processing apparatus further includes a display device that displays the control parameter,
The information processing apparatus according to claim 1, wherein the basic input / output program executed in the CPU accepts an input for instructing a change of the control parameter displayed on the display device.

(Supplementary Note 10) The basic input / output program executed in the CPU receives an input for instructing a change of the control parameter displayed on the display device after the initialization of the display device is performed. The information processing apparatus according to appendix 9.

(Supplementary Note 11) The basic input / output program executed in the CPU sets the control parameter changed according to the input instructing the change in the system controller, and sets the control parameter set in the system controller. The information processing apparatus according to appendix 9, wherein at least initialization of the CPU is executed based on the information.

(Supplementary Note 12) The information processing apparatus further includes a memory, an expansion bus, a display device, and a plurality of devices.
The basic input / output program executed in the CPU obtains the size of the battery from the power control unit prior to initialization of the CPU, the memory, the expansion bus, the display device, and the plurality of devices. The information according to claim 1, wherein the control parameter is set for each of the CPU, the memory, the expansion bus, the display device, and the plurality of devices in accordance with the acquired size. Processing equipment.

(Supplementary Note 13) The basic input / output program executed in the CPU sets the control parameter in the system controller, and based on the control parameter set in the system controller, the CPU, the memory, The information processing apparatus according to appendix 12, wherein initialization is performed for each of the expansion bus, the display device, and the plurality of devices.

(Supplementary Note 14) A non-volatile storage device that stores a basic input / output program that is a program that is executed in response to power-on of the information processing device, a CPU that executes the basic input / output program, and power to the information processing device A control method of an information processing apparatus including a battery that supplies a power supply and a power control unit that controls the battery,
The basic input / output program executed in the CPU is:
Obtain the size of the battery from the power control unit,
A control parameter for the information processing apparatus, which is set in advance according to the acquired size, is set.

(Supplementary note 15) A program stored in a non-volatile storage device and executed in response to power-on of the information processing device,
On the computer,
From the power supply control unit that controls the battery that supplies power to the information processing device, obtain the size of the battery,
A program for setting a control parameter of the information processing apparatus determined in advance according to the acquired size is executed.

1 CPU
2 System Controller 3 Memory 4 Flash Memory 5 Power Supply Control Unit 6 Disk Controller 7 Graphics Controller 8 Input / Output Controller 9 USB Host Controller 10 Bus 11 Expansion Bus 12 Signal Line 21 Setting Table 40 BIOS
41 Control table 51 Battery 61 Hard disk 71 Display 81 Keyboard 91 USB port

Claims (7)

A non-volatile storage device for storing a basic input / output program that is a program executed in response to power-on of the information processing device;
A CPU for executing the basic input / output program;
A battery for supplying power to the information processing apparatus;
A power control unit for controlling the battery ;
A system controller for controlling the information processing apparatus;
A control table that is included in the basic input / output program and stores predetermined control parameters for each of the plurality of sizes of the battery;
A setting table provided in the system controller, in which control parameters of the information processing apparatus are set;
A battery that is different from the battery and dedicated to hold control parameters of the information processing apparatus in the setting table after the power of the information processing apparatus is cut off by supplying power to a circuit provided with the setting table Including a battery,
The basic input / output program executed in the CPU acquires the size of the battery from the power supply control unit, and the information processing apparatus predetermined according to the size acquired from the control parameters of the control table An information processing apparatus , wherein the control parameter is selected and acquired, and the acquired control parameter is set in the setting table . The power control unit is connected to the system controller via a dedicated line different from the bus of the information processing device,
The basic input / output program executed in the CPU obtains the size of the battery from the power control unit via the system controller and the dedicated line in response to power-on of the information processing apparatus. The information processing apparatus according to claim 1. The information processing apparatus according to claim 1, wherein the basic input / output program stored in the non-volatile storage device includes the control parameters determined in advance for each of the plurality of sizes of the battery. The information processing apparatus further includes a display device that displays the control parameter,
The information processing apparatus according to claim 1, wherein the basic input / output program executed in the CPU accepts an input instructing to change the control parameter displayed on the display device. The information processing apparatus further includes a memory, an expansion bus, a display device, and a plurality of devices.
The basic input / output program executed in the CPU obtains the size of the battery from the power control unit prior to initialization of the CPU, the memory, the expansion bus, the display device, and the plurality of devices. The control parameter is set for each of the CPU, the memory, the expansion bus, the display device, and the plurality of devices according to the acquired size. Information processing device. A non-volatile storage device that stores a basic input / output program that is a program executed in response to power-on of the information processing device, a CPU that executes the basic input / output program, and a battery that supplies power to the information processing device A power controller that controls the battery; a system controller that controls the information processing apparatus; and a control parameter that is included in the basic input / output program and that is predetermined for each of the plurality of sizes of the battery A control table, a setting table provided in the system controller, in which control parameters of the information processing apparatus are set, and a battery different from the battery, and supplying power to a circuit in which the setting table is provided The information in the setting table after the power of the information processing apparatus is cut off by A control method for an information processing apparatus including a dedicated battery that holds the control parameters of the processing unit,
The basic input / output program executed in the CPU is:
Obtain the size of the battery from the power control unit,
Select and obtain a control parameter of the information processing apparatus that is predetermined according to the size obtained from the control parameter of the control table ,
The acquired control parameter is set in the setting table . A method for controlling the information processing apparatus. A program stored in a non-volatile storage device and executed in response to power-on of the information processing device,
On the computer,
From the power supply control unit that controls the battery that supplies power to the information processing device, obtain the size of the battery,
Control of the information processing apparatus that is predetermined according to the acquired size from among the control parameters of a control table that is included in the program and stores predetermined control parameters for each of the plurality of sizes of the battery Select and get parameters ,
The obtained control parameter is a setting table provided in a system controller for controlling the information processing apparatus and in which the control parameter of the information processing apparatus is set, and the setting table is provided by a dedicated battery different from the battery A program for executing a process of setting a setting table holding control parameters of the information processing apparatus in the setting table after the power of the information processing apparatus is shut off by supplying power to the circuit .

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