KR20070089399A - Method for booting control of digital store apparatus - Google Patents

Abstract

A booting control method in a digital storage apparatus is provided to integrate an existing bios and a boot loader into one ROM(Read Only Memory), thereby simplifying system configuration and reducing a product price. A booting control method in a digital storage apparatus comprises the following steps of: performing a POST(Power On Self Test) when power is applied to the digital storage apparatus(S100,S102); performing a boot loader after performing the POST(S104); and generating information expressing that the loading performance is proceeded until the loading is completed, and displaying the generated information(S114).

Description

Method for booting control of digital store apparatus

1 is a flowchart illustrating a process of performing a BIOS and a boot loader in a ROM in a digital storage device according to an exemplary embodiment of the present invention.

Figure 2 is a screen example for explaining Figure 1 according to an embodiment of the present invention.

3 is a flowchart illustrating a self-diagnosis process in a digital storage device according to an embodiment of the present invention.

4 is a flowchart illustrating a configuration of a boot loader in a digital storage device according to an embodiment of the present invention.

5 is an exemplary view illustrating an example of a splash screen in a digital storage device according to an exemplary embodiment of the present invention.

The present invention relates to a method for implementing a BIOS and a boot loader in a single ROM in a digital storage device.

Basically, some display apparatuses have a small time gap of 10 to several minutes depending on the system after the power is applied and before the operation system (OS) is executed.

For example, on a device such as a personal computer (PC) using Windows as an OS,

It displays a logo image of Windows on the screen and also outputs a status bar indicating the loading level of the OS.

By doing so, the user can easily recognize the current state and know the progress, and various conveniences are provided.

The process of popping up a window screen on the PC (PC), when the power is applied, the BIOS (Basin Input Output System) (BIOS) searches for the system's components and initializes.

At this time, if an error occurs, a message is output to the user and the corresponding operating system is booted through the search of a booting medium.

The bios used by PCs are AWARD or Phoenix bios. The process is slightly different depending on the manufacturer, but generally the following process is followed.

When the power is applied, the CPU test is performed. The CPU controls all data processing and the flow between peripheral devices.Bios first checks the CPU's error flags and checks the internal temporary storage device. Check for abnormal registers.

It then initializes the basic controllers, initializing the functions of the DMA controller, the NMI controller, the programmable interrupt controller (PIC), the programmable interval timer (PIT), and the keyboard.

After that, we do a ROM BIOS test, a CMOS RAM test, and a memory test.

To check the ROM chip for physical damage or internal data, checksum check is performed. If a checksum error occurs, the BIOS must be upgraded or the ROM chip replaced.

The system RAM is a memory device that has a value that establishes the configuration of the current system after the ROM BIOS operation at boot. It stores time, hard disk state, password, boot order, and CPU state.

Examine the first 256KB of memory and test for RAM chip defects or bank defects.

Next, it initializes cache, Interrupt Vector Table (IVT), keyboard, etc. It activates external cache memory connected to North Bridge chipset on main board, initializes IVT, IVT is installed at the beginning.

In the case of the keyboard, the NUM lock key is activated.

In addition, a graphics card test, a PIC and an Enhanced Industrial System Architecture (EISA) check, and a second memory test are used to test the circuit function of the graphics card and the memory inside the graphics card.

It tests the functionality of PIC chips, such as Intel's 8295, tests the CMOS area containing EISA information, initializes the EISA Adapter and slots, and checks the memory of the EISA Adapter.

The total memory size is calculated by reading 1 block (64KB) of all the first 256KB of memory, and the memory is tested by reading and writing tests in the corresponding area.

Next, the cache controller is initialized and the shadow ram is initialized. The cache controller is enabled and the shadow ram function is enabled depending on whether or not CMOS SETUP is set.

After that, it searches for various drives, most of which search for and scan drives such as Floppy, hard disk, and CD-ROM.

All modern PCs are in the process of discovering and using PCI-based Plug and Play (PNP) devices during the BIOS boot process.

The process first creates a resource table for using devices such as IRQ, DMA, I / O ADDRESS of available devices, searches for PNP and non-PNP devices through PCI and ISA buses, It compares the data saved in the ESCD (Extended System Configuration Data) area with the currently retrieved data and proceeds with booting if it is the same and writes a new value if different.

Finally, allocate and verify resources for use of newly installed or changed devices.

The PASSWORD display and changes made so far are written to the CMOS RAM and initialized with other devices with ROMbios.

Display the desktop management interface (DMI) table, find the bootload to boot, and start the operating system to boot.

Unlike PCs that go through this process, embedded systems such as WinPVR use Mini Bios with functions such as BIOS and store a boot loader (BLDR) for OS loading on the hard disk along with the OS image.

Mini Bios will be able to read the hard disk and run the boot loader to load the OS or load the OS image directly by reading the Master Boot Record (MBR) of the hard disk.

The first method is to implement safety devices such as the OS's security check in the boot loader before loading the OS for more stable system management, and to implement the logo screen output such as the splash screen.

However, even with this implementation, the boot loader is stored on the hard disk, so the stability is not high due to the characteristics of the hard disk, and the second method takes about 1 minute depending on the size of the image until the OS is loaded. You have to wait.

A first object of the present invention is to provide a method for simplifying a system by integrating and implementing a BIOS and a boot loader separated in one ROM in an embedded system.

It is a second object of the present invention to provide a method which can be easily used by a user by displaying various system states and error messages or countermeasures caused by errors before loading the OS.

The third object of the present invention is to take some time before loading the OS after the power is applied in the system using the WinCE OS method to output the system status and progress on the screen so that the user can intuitively know In providing.

In an embedded digital storage device in which an OS (Operrating System) is mounted in the present invention for achieving the above object, and digital data processing is performed based on the OS, a power on self test (POST) is applied when power is applied to the digital storage device. Performing; Performing a boot load after the POST; It provides a boot control method for a digital storage device comprising the step of generating and displaying information representing that the loading is performed until the loading is completed.

The information representing that the loading is in progress is characterized in that the OS image.

The NK.bin image is loaded from the root directory and displayed as information representing that the loading is in progress.

The NK.bin image is searched in the root directory as the information representing that the loading is in progress, and whether the image is normally signed is determined, and the image is loaded and displayed or backed up according to the determination result. ) To load and display an image.

The information representing that the loading is in progress is characterized in that the loading progress rate.

The information representing that the loading is in progress is further characterized in that the display further comprises at least one information of a system state, an error message, and an error handling method.

The ROM BIOS and the boot loader for booting may be mounted in one boot ROM.

Referring to the accompanying drawings, a method for implementing a BIOS and a boot loader in one ROM in an embedded system having a storage medium according to an embodiment of the present invention as described above will be described.

1 is a flowchart illustrating a process of performing a BIOS and a boot loader in a ROM in a digital storage device according to an exemplary embodiment of the present invention.

Referring to FIG. 1, when a user applies power to boot (S100), a POST process is performed (S102).

The POST can be used to inspect the contents of the BIOS, including the CPU, the inspection of the contents of the CMOS, the directory memory access (DMA), the keyboard, the memory, the video card, and the like. Various hardware devices are checked for abnormalities.

In this process, various hardware devices are initialized, which is essential for normal operation.

When the POST operation is completed, the boot loader moves to the initial position of the boot loader (S104).

As described above, the contents read from the boot devices are also operating systems (DOS) such as DOS or Windows, and Windows CE is applied to an embedded PVR system.

The part that reads the OS is called a boot loader. The boot devices are also regularly positioned so that data for starting the OS is located.

The role of ROM BIOS in this process is to serve as a relay between the OS and hardware devices.

Hardware does not necessarily match the performance and structure of each manufacturer. Therefore, the control method may be different depending on the type of hardware. If there is no relay by the ROM BIOS, the OS should be prepared to control the hardware.

In addition, if you want to control the hardware from various applications running on the OS, the programmers of the application program must directly command the various hardware.

Therefore, analysis of the master boot record (MBR) and the partition boot record (PBR) of the hard disk drive is started (S106).

Search for NK.bin in the boot area for Load Image (NK.bin) in the root directory (S108).

Look for NK.bin in the boot area and check whether the image is normally signed through a security check (S110).

As a result of the determination, if it is normally authenticated, it executes NK.bin (S112), and when it is not normally authenticated or there is another problem, use the OS image for backup of the partition area or prepare the OS image of the initial shipment state prepared in advance through rebooting The user is guided to the screen to load (NK_F.bin) (S114).

2 is an exemplary diagram for describing FIG. 1 according to an exemplary embodiment of the present invention.

Referring to FIG. 2, if the OS fails to be loaded more than once, the NK.bin may be damaged, and thus a message indicating a reboot to the shipment mode is output to guide the loading of the default image NK_F.bin.

The way to load NK_F.bin, the initial OS image of the embedded system equipped with the current storage media, can be loaded by pressing the local key of the front panel when booting. If necessary, the user reset function is provided to initialize user settings such as guide information or user setup.

3 is a flowchart illustrating a self-diagnosis process in a digital storage device according to an embodiment of the present invention.

Referring to FIG. 3, the overall function is similar to that of a PC BIOS. However, due to the characteristics of an embedded system, the system is optimized and used with minimal operation. The basic system components are checked and errors are checked.

First, the system initializes the system when the system is first powered on or reboots (S300). The boot mode is divided into a warm boot and a cold boot according to a case of attempting a boot, and is a protected mode. Switch to (S302).

The next step is to initialize the components constituting the system. The main memory and the memory controller, the initialization of the processor for basic operation, the output ports such as the serial port and the 80h port for monitoring and the main chipset are initialized (S304). ).

Finally, in preparation for the state necessary to load the OS, the microcode is loaded, control caching, enumerate PCI devices, option ROM execution, IDE access, etc. S306).

4 is a flowchart illustrating a configuration of a boot loader in a digital storage device according to an exemplary embodiment of the present invention, and FIG. 5 is an exemplary diagram illustrating an example of a splash screen according to an exemplary embodiment of the present invention.

Referring to Figure 4, after completing the preparation process of the system for the basic OS boot through the POST process, find the image of the OS to actually boot, determine the availability of the image and when the problem occurs the information through the screen Print out or tell the solution.

And since there is a certain boot time before the OS loads, the user can intuitively know the system status by displaying a status bar or the manufacturer's logo indicating the OS loading during this time. .

The detailed configuration of the boot loader in the embedded system having a storage medium is as follows.

In the first POST process, the hardware system is initialized and the graphics controller is initialized to output the splash screen (S400).

Next, a resolution (Composet, 480i, 480P) suitable for the display device selected by the user is determined (S402).

A graphic controller setting process of setting an output format corresponding to the chipset is performed (S404).

After the setting of the graphics controller is completed, it takes some time before the OS is finally loaded and displayed on the screen. As shown in FIG. 5, the loading state of the OS together with the logo of the product is displayed on the screen through the status bar. (S406).

OS loading finds the OS image NK.bin on the hard disk and checks whether it is an authenticated image through security check. If there is no problem, the OS loading is loaded into memory and displayed on the screen (S308).

So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be implemented. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

According to the present invention, by implementing the existing BIOS and boot loader in one ROM, the system configuration can be simplified and the product price can be reduced.

According to the present invention there is an effect that can increase the user convenience by outputting a boot state on the screen during booting.

According to the present invention, the splash screen is displayed on the screen until the OS is loaded, so that the user can easily know the progress of the system, and when the OS fails to load, the phrase to guide the countermeasures can be used to increase the reliability of the product. It can be effective.

Claims (7)

In embedded digital storage device equipped with OS (Operrating System) and digital data processing based on OS, Performing power on self test (POST) when power is applied to the digital storage device; Performing a boot load after the POST; Generating and displaying information representing that loading is in progress until the loading is completed; Boot control method of a digital storage device comprising a. The method of claim 1, wherein the information representing that the loading is in progress is an OS image. The boot control method of claim 1, wherein the NK.bin image is loaded and displayed from a root directory as information representing that the loading is in progress. The method of claim 1, wherein the NK.bin image is searched in a root directory as information representing that the loading is in progress, and whether the image is normally signed is determined, and the corresponding image is loaded according to the determination result. Boot control method of a digital storage device, characterized in that for displaying or loading and displaying a backup image. The boot control method of claim 1, wherein the information representing that the loading is in progress represents a loading progress rate. The boot control method of claim 1, further comprising at least one information of a system status, an error message, and an error handling method, as information representing that the loading is in progress. . The method of claim 1, wherein the ROM BIOS and the boot loader for booting are mounted in one boot ROM.

Images