KR20000019147A - System and the method for rom bios driving of computer - Google Patents

Abstract

PURPOSE: A system and the method for ROM BIOS driving of computer are provided to proceed a program routine related to an input/output booting of computer. CONSTITUTION: The system and the method for ROM BIOS driving of computer are composed of a central processing unit(10), a main memory unit(20), a serial ROM(30), a hard disk driver(HDD)(40), the first control unit(50) and the second control unit(60). Furthermore, the system and the method for ROM BIOS driving of computer comprises: a memory unit that divides the ROM BIOS into a least part, an interrupt responding part and a special function proceeding part, and stores the least part; an auxiliary memory unit wherein the BIOS including the interrupt responding part and the special function proceeding part is stored; a main memory unit that proceeds the BIOS routine corresponding to various input/output work demand; and a control unit that controls mutual data transmitting/receiving between the memory unit, the auxiliary memory unit and the main memory unit.

Description

ROM BIOS driving system of computer and its method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ROM BIOS driving system and a method of a computer for executing program routines related to input / output booting of a computer. The part is stored in the ROM, and the BIOS code including the interrupt response part and the special function execution part is stored in the hard disk drive (hereinafter referred to as HDD), and the BIOS code is shadowed by the main memory. This allows the BIOS to run BIOS routines that respond to different I / O requirements, enabling BIOS to be implemented using the smallest ROM and upgrading to any BIOS size. ) Drive system and method thereof.

Recently, the size of the ROM BIOS code is gradually increasing as interface standards or power management systems are developed and new technologies related thereto are added. Here, the ROM BIOS is a program routine related to input / output booting of a computer. The routine is stored in a ROM, and may determine a hard disk type.

In particular, the ROM uses a programmable ROM (hereinafter, referred to as a PROM) in which a user can arbitrarily store a program, and the PROM may provide a logical function desired by the user.

Referring to FIG. 1, a ROM BIOS driving system of a computer according to the related art is implemented using a ROM BIOS 1 using an Isa bus and an electrically erasable PROM (hereinafter referred to as EEPROM). The IAS (Industrial Standard Architecture, hereinafter referred to as ISA) bus system is a bus system adopted from the beginning using an 8-bit (8-bit) expansion slot to transmit 16-bit data of 8 MHz, and the central processing unit (5) and Bottlenecks can occur when large amounts of data, such as high resolution graphics, are required due to speed differences between system buses.

That is, in the related art, a power on self test (hereinafter referred to as POST) code for determining whether or not a system is powered and performing a test and initialization of the CPU 5 and each chipset, and The ROM BIOS 1 storing a BIOS code including an Interrupt Service Routine (ISR) code for performing a response function to an interrupt request, and the ROM BIOS 1 using an ISA bus. At the same time, the first control unit 2 controls the writing / reading of the bios code and allows the system to perform the POST process, and after the completion of the POST process, shadows the bios code in the ROM bios 1. A main memory device (4) which allows the BIOS routines to be executed, and a peripheral component interconnect (PCI) for the interface between the system and the peripherals. Using the called PCI) bus, the first control unit (2) and communicate with each other at the same time to communicate with each other come the main memory unit 4, which includes a second control unit (3) for the system to be driven in accordance with the communication result.

In particular, the communication between the second control unit 3 and the central processing unit 5 uses a central processing unit (CPU) bus.

The operation of a ROM BIOS driving system of a computer according to the prior art will be described with reference to the above configuration.

First, when a power supply request signal is transmitted from the outside to the system, the first controller 2 reads the BIOS code from the ROM BIOS 1 using the ISA bus. Then, the first control unit 2 performs a POST process such as testing and initialization of the CPU 5 and each chipset. Thereafter, the second control unit 3 communicates with the first control unit 2 using a PCI bus to shadow the BIOS code stored in the ROM bios 1 into the main memory device 4.

The main memory device 4 reads the BIOS code residing therein as necessary to perform appropriate processing. In this case, the second control unit 3 performs control communication with the main memory device 4 or the first control unit 2 and the PCI bus according to the case, as a result of the control communication. The device 5 is capable of writing / decoding / executing the program or data into the main memory 4.

However, in the ROM BIOS driving system of the prior art, when the BIOS code is upgraded to improve the processing power of the computer, the upgrade operation becomes more difficult as the amount of upgrade increases due to the limitation of the ROM size. There is a problem.

In addition, as the size of the BIOS code is expanded day by day, new technologies such as a new interface standard and a power management system are added, so that the existing ROM BIOS 1 may not be suitable for a computer environment, and the ROM BIOS 1 and the first control unit may be used. Another problem is that the ISA bus, which enables the intercommunication of (2), has been gradually disappearing since 1999, and the ISA bus method is no longer needed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object thereof is to add a minimum portion of a ROM BIOS to a minimum size ROM, an interrupt response portion other than that, and a newly added special feature without using an existing ISA bus. BIOS code such as function execution part is stored in the hard disk drive so that the BIOS code can be implemented using the main memory after POST process, so that it can be easily implemented regardless of the size of the BIOS. The present invention provides a ROM BIOS driving system and a method of a computer which can be lowered and at the same time low cost.

1 is a configuration diagram schematically showing the configuration of a ROM BIOS driving system of a computer according to the prior art,

2 is a block diagram showing the configuration of a ROM BIOS driving system of a computer according to the present invention;

3 is a flowchart illustrating a method of driving a ROM BIOS of a computer according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: central processing unit (CPU) 20: main memory

30: Serial ROM 40: Hard Disk Drive (HDD)

50, 60: first and second controllers

According to a first aspect of a ROM BIOS driving system and a method of a computer according to the present invention for solving the above problems, the ROM BIOS is divided into a minimum portion, an interrupt response portion, a special function performing portion, and the like. Storage means for storing the minimum portion, auxiliary storage means for storing the bias code including the interrupt response portion and the special function execution portion, and shadowing the BIOS code in the auxiliary storage means when power is supplied to the system. After winging, the main memory means for executing a BIOS routine corresponding to various input / output work requests, and mutual data transmission and reception between the memory means, the auxiliary memory means, and the main memory means are controlled, according to the control result. It is configured to include a control unit to be driven.

In addition, the auxiliary storage means is protected and limited in access and use to prevent the BIOS code is changed or unauthorized access by another person, and the storage means determines the power supply of the system and at the same time tests each device and program. And a power on self test (POST) code for performing initialization.

Further, according to the second aspect of the present invention, the BIOS area is divided into a minimum portion, an interrupt response portion, a special function portion, and the like, and the minimum portion is stored in the storage means, and the interrupt response portion and the special function performing portion are stored in the auxiliary storage means. A first process of storing the data in the first process and a power on self test (hereinafter, referred to as POST) code for testing and initializing each device and program in the system from the storage means. A second process for performing a process, and when the second process is completed, shadowing the interrupt response portion and the special function execution portion in the auxiliary memory means to the main memory means to correspond to various BIOS routines ( A third process of operating a routine).

Hereinafter, an embodiment of a ROM BIOS driving system and a method thereof of a computer according to the present invention will be described with reference to the accompanying drawings.

First, referring to the ROM BIOS driving system of a computer according to the present invention with reference to FIG. 2, a central processing unit (CPU) for managing an entire computer system and performing arithmetic operation and logic operation of data. (10), the main memory device 20 for storing the program or data and reading out the stored contents as necessary, and performing appropriate processing, the CPU 10 and Serial ROM 30, which stores the minimum portion of ROM BIOS containing POST code for testing and initialization of major chipsets, and Interrupt Service Routines for responding to interrupt requests when using the system. HDD 40, which stores a BIOS code including a function code for performing a code and other special functions, When the power key requesting power supply is turned on, the POST process is performed by receiving the POST code from the serial ROM 30 using a system management (hereinafter referred to as SM) bus. The first control unit for controlling the bios code to read the BIOS code from the HDD 40 and to shadow the BIOS to the main memory 20 when the POST process is completed, and transmits the respective control results to the system. A second control unit 60 controlling mutual data transmission and reception between the first control unit 50, the main memory unit 20, and the CPU 10 so that the system can be properly operated according to the control result. ) Is included.

Here, a predetermined region of the main memory device 20 in which the BIOS code is stored, that is, a region shadowed by the BIOS, restricts access or use by another person, and similarly prevents recording of the HDD 40 region in which the BIOS code is stored. To prevent unauthorized modification or access of the BIOS code.

On the other hand, when the BIOS upgrade is executed, a separate program is created without any limitation on the size, and the BIOS code of the HDD 40 is directly recorded and used by using a later upgraded code.

Next, referring to FIG. 3, a ROM BIOS driving method of a computer according to an embodiment of the present invention may be divided into three parts, that is, a minimum part and an ISR code. Divided into the interrupt response portion, the special function execution portion including the function code, and the minimum portion is stored in the serial ROM 30, and the BIOS code including the interrupt response portion and the special function execution portion is stored in the HDD 40, respectively. (See S1).

In the second step, when the power key mounted on the system is turned on, the SM bus is used to determine whether to supply power to the system and to perform testing and initialization of the main chipsets including the CPU 10. The POST code is read from the serial ROM 30 to test and initialize the CPU 10 and the main chipset (see S2).

After the POST process of the second step S2 is completed, in the third step, the BIOS 40 shadows the BIOS code including the interrupt response part and the special function performing part to the main memory 20. After the POST process is completed, a BIOS routine corresponding to the input / output request is operated by using the BIOS code shadowed to the main memory 20 in various input / output requests (S3).

Looking at the ROM BIOS (ROM BIOS) drive system and method of the computer according to the present invention configured as described above in detail as follows.

First, in the first step S1, the ROM BIOS area is divided into three parts: a minimum part, an interrupt response part including an ISR code, and a special function performing part including a function code for performing a special function. The minimum portion of the ROM BIOS is stored in the serial ROM 30 having the smallest size, and the bias code including the ISR and the function code is stored in the HDD 40 by being prevented from being written.

Thereafter, in the second step S2, the POST routine, which is additionally stored in the serial ROM 30, is read using the SM bus so that the POST routine can be executed through the first controller 50. In the third step S3, when the POST process of the second step S2 is completed, the first control unit 50 receives the bias code from the HDD 40 and transfers it to the second control unit 60. Done.

Then, the second control unit 60 allows the bias code to be shadowed in the main memory 20, and reads the bias code from the main memory 20 in response to an input / output request after the POST process is completed. A bias routine corresponding to the input / output request may be executed.

The ROM BIOS driving system and the method of the computer according to the present invention configured as described above are provided with a minimum portion of the ROM BIOS in a ROM of a minimum size without using an existing ISA bus, and an interrupt response portion except for the new one. The BIOS code, such as the execution of special functions, is added to the hard disk drive, and after the POST process, the BIOS code is shadowed into the main memory to enable the BIOS to be implemented. Without this, upgrades can be made easier and the price can be lowered.

Claims (4)

The ROM BIOS is divided into a minimum part, an interrupt response part, a special function performing part, and the like, and a storage means for storing the minimum part therein and an auxiliary code for storing a bias code including the interrupt response part and the special function performing part. Storage means, main memory means for performing a BIOS routine corresponding to various input / output operation requirements after shadowing a BIOS code in the auxiliary storage means when power is supplied to the system; And a control unit for controlling mutual data transmission and reception between the storage means and the main memory means so that the system can be driven according to the control result. The method of claim 1, And said auxiliary memory means is restricted and protected from access and use in order to prevent the BIOS code from being altered or unauthorized access by another person. The method of claim 1, The memory means is a power on self test (hereinafter referred to as POST) code for the test and initialization of each device and program at the same time to determine whether the system power supply is added ROM BIOS drive system of the computer. A first process of dividing the BIOS area into a minimum portion, an interrupt response portion, a special function portion, and the like, wherein the minimum portion is stored in the storage means, and the interrupt response portion and the special function execution portion are stored in the auxiliary storage means, respectively; A second process of performing a POST process by reading a Power On Self Test (POST) code which performs a test and initialization of each device and program in the system from the means; Comprising a third step of operating the BIOS routine corresponding to a variety of input and output requests by shadowing the interrupt response portion and the special function execution portion in the main memory means in the auxiliary storage means when the second process is completed; ROM BIOS driving method of a computer, characterized in that made.