TW201621648A - Novel basic input/output system - Google Patents

Abstract

The present invention provides a novel basic input/output system comprising a flash chip, a jump switch and a logic gate. When applying this novel basic input/output system, a first boost program stored in a first storing region of the flash ship or a second boost program stored in a second storing region of the flash ship can be loaded for boosting a X86 system by way of switching the jump switch to a "High" state or a "Low" state and using CPU's GPIO port(s). By such way, this novel basic input/output system not only provides dual bootloader for the X86 system but also carries out the BIOS backup based on single flash chip.

Description

Novel basic input and output system

The present invention relates to the field of basic input and output systems, and more particularly to a novel basic input and output system.

Whether it is a general personal computer, a server host, or an industrial computer, the first firmware executed after booting is the Basic Input/Output System (BIOS). If the BIOS cannot be correctly executed due to damage, The computer cannot perform subsequent operations or cannot boot.

The BIOS of the computer is mainly stored in the flash memory on the motherboard. In the RISC system (reduced instruction set computer, the reduced instruction set) mostly selects the nor-flash to store the BIOS bootloader boot data, and in the RISC system. Many software developers will use the self-developed BIOS, so there will be a need to switch between the application and hardware BIOS during development and maintenance. If the problem of not being able to boot properly due to an error in updating the nor-flash data, it can only be repaired by an expensive burning recording device (such as JTAG) or by replacing nor-flash, which may cause troubles in development and maintenance.

It can be seen from the above that the current BIOS repair method is still very inconvenient; in view of this, the inventor of the present invention has tried to study the invention and finally developed a novel basic input/output system of the present invention.

The main object of the present invention is to provide a novel basic input/output system, wherein the present invention comprises a flash memory chip, a jumper switch and a logic gate to form a novel basic input/output system which can be disposed on the motherboard. . In the operation of the novel basic input/output system, the user can selectively set the jump switch to "High" or "Low", and simultaneously determine the general-purpose input/output port of the main processor on the motherboard. Loading a first booting program stored in one of the first storage blocks of the flash memory chip, or loading a second booting program stored in a second storage block of the flash memory chip. In this way, the present invention not only realizes a powerful improvement of the dual bootloader (Dual Bootloader) booting host, but also realizes the backup purpose of the booting program of the basic input/output system with a single flash memory chip; and, such a result It also brings great convenience to developers, users and maintenance personnel.

Therefore, in order to achieve the main object of the present invention, the inventor of the present invention proposes a novel basic input/output system which is disposed on one of the motherboards of a host and includes: a flash memory chip mounted on the motherboard to couple a main processor on the motherboard, and having a first booting program and a second booting machine mapped to the first booting program a basic input/output system of the program; wherein the first booting program and the second booting program are respectively stored in one of the first storage block and the second storage block of the flash memory chip; a jump pin switch Mounted on the motherboard and having at least one biasing pin, a logic control pin and a ground pin; and a logic gate disposed on the motherboard and having at least a first logic input a second logic input and a logic output; wherein the first logic input is coupled to a general purpose input/output port (GPIO) of the main processor, the first The logic input terminal is coupled to the logic control pin of the jump pin switch, and the logic output is coupled to the flash memory chip; wherein the main processor can pass the universal input/output port Output a first logic signal to the first a logic input, and the sleeve switch outputs a second logic signal to the second logic input by inserting a pin on the jumper switch, so that the logic gate is coupled to the first logic signal The second logic signal is logically operated to output a boot program control signal to the flash memory chip, thereby selectively loading the first boot program or the second boot program.

<present invention>

11‧‧‧Flash memory chip

12‧‧‧jumper switch

13‧‧‧Logic gate

2‧‧‧Main processor

20‧‧‧Input/output unit

31‧‧‧Control bus

116‧‧‧Control feet

32‧‧‧ data bus

117‧‧‧Information pin

33‧‧‧ address bus

118‧‧‧ address feet

111‧‧‧First boot program

112‧‧‧Second boot program

110‧‧‧Basic input and output system

111a‧‧‧First storage block

112a‧‧‧Second storage block

121‧‧‧ bias pin

122‧‧‧Logic control pin

123‧‧‧ Grounding feet

131‧‧‧First logic input

132‧‧‧Second logic input

133‧‧‧Logic output

21‧‧‧General-purpose input/output埠

1181‧‧‧Highest bit address

15‧‧‧ Pins

Vcc‧‧‧ external bias

<知知>

The first figure is a schematic architecture diagram of a novel basic input/output system of the present invention; the second diagram is a circuit architecture diagram of a logic gate; and the third A diagram and the third B diagram are top views of a jumper switch.

In order to more clearly describe a novel basic input and output system proposed by the present invention, a preferred embodiment of the present invention will be described in detail below with reference to the drawings.

Please refer to the first figure, which is a schematic architecture diagram of a novel basic input/output system of the present invention. As shown in the first figure, the novel basic input/output system of the present invention is disposed on a host board of a host, and mainly includes: a flash memory chip 11, a jump pin switch 12 and a logic gate 13; The flash memory chip 11 is a NOR type flash memory chip mounted on the motherboard to couple a main processor 2 on the motherboard.

In the above description, one of the input/output units 20 of the main processor 2 is coupled to a plurality of control pins 116 of the flash memory chip 11 through a control bus 31 (Control Bus), and the input /output unit 20 is coupled to the flash memory through a data bus 32 (Data Bus) The plurality of data pins 117 of the bulk wafer 11 are coupled to the plurality of address pins 118 of the flash memory chip 11 via an address bus 33 (Address Bus). Furthermore, the flash memory chip 11 stores a basic input/output system 110 (Basic Input/Output System, BIOS) having a first booting program 111 and a second booting program 112 mapped to the first booting program. . In the present invention, in particular, the flash memory chip 11 is divided into a first storage block 111a and a second storage block 112a for storing the first booting program 111 and the second, respectively. Boot program 112. It must be added that the boot program referred to here is the X-loader and Uboot used in the BIOS.

The novel basic input and output system of the present invention will be further described. As shown in the first figure, the jumper switch 12 is mounted on the motherboard and has at least one biasing pin 121, a logic control pin 122 and a ground pin 123. The logic gate 13 is disposed on the motherboard and has at least a first logic input 131, a second logic input 132 and a logic output 133. The first logic input 131 is coupled to the The main processor 2 is a general-purpose input/output port 21 (GPIO), and the second logic input terminal 132 is coupled to the logic control pin 122 of the jumper switch 12, and the The logic output 133 is coupled to a highest bit address pin 1181 of the plurality of address pins 118 of the flash memory chip 11. In this way, the main processor 2 can output a first logic signal to the first logic input through the universal input/output port 21 131, and by placing a pin sleeve 15 on the jumper switch 12, the jumper switch 12 outputs a second logic signal to the second logic input terminal 132, thereby causing the logic gate 13 to be the first The logic signal is logically operated with the second logic signal to output a boot program control signal to the flash memory chip 11, thereby selectively loading the first boot program 111 or the second boot program 112.

Continue to refer to the first figure, and also refer to the second figure, which is the circuit diagram of the logic gate. As shown in the first figure, the present invention uses an XOR logic gate as the logic gate 13, wherein the truth table of the XOR logic gate is as follows.

Moreover, as shown in the second figure, an engineer skilled in the digital circuit technology should be able to easily form the logic gate 13 of the present invention with four NAND logic gates, and a logic gate 13 composed of four NAND logic gates. The truth table is shown in the table above.

Thus, the foregoing description has fully described the architecture and components of the novel basic input and output system of the present invention. Next, the technical features of the novel basic input/output system of the present invention will be further explained. Please refer to the first figure, and please refer to the third A picture and the third B picture at the same time, above the jump pin switch 12 view. As shown in FIG. 3A, if a pin sleeve 15 is used to cover the bias pin 121 and the logic pin 122 of the jumper switch 12, the logic pin 122 and the bias pin 121 are short-circuited to each other; At this time, since the bias pin 121 is coupled to an external bias voltage Vcc, the logic control pin 122 is coupled to the external bias voltage Vcc through the bias pin 121, thereby outputting a second logic of high level. Signal.

According to the above description, according to the second logic signal of the high level, the main processor 2 can output the first logic signal of the low level through the universal input/output port 21, thereby respectively making the first power on. The program 111 and the second booting program 112 are the main booting program and the backup booting program; or the main processor 2 can output the first logical signal of the high level through the general-purpose input/output port 21, In this manner, the second booting program 112 and the first booting program 111 are the primary booting program and the backup booting program, respectively.

In addition, as shown in FIG. B, if a pin sleeve 15 is used to cover the logic control pin 122 and the ground pin 123 of the jumper switch 12, the logic control pin 122 and the ground pin 123 are short-circuited to each other; At this time, since the ground pin 123 is coupled to the ground, the logic control pin 122 is grounded through the ground pin 123, and then outputs a second logic signal of a low level. Therefore, the main processor 2 can output the first logic signal of the high level through the general-purpose input/output port 21 according to the second logic signal of the low level, thereby respectively causing the first booting program 111 With the second boot process The mode 112 is the backup booting program and the main booting program; or the main processor 2 can output the low level first logical signal through the universal input/output port 21, thereby making the second The booting program 112 and the first booting program 111 are the backup booting program and the main booting program.

The above description has completely introduced the architecture and technical features of the novel basic input/output system of the present invention; and, through the above, it can be known that the novel basic input/output system of the present invention has the following advantages:

(1) The present invention comprises a flash memory chip 11, a jumper switch 12 and a logic gate 13 to form a novel basic input/output system which can be disposed on a motherboard. In the operation of the novel basic input/output system, the user can selectively set the jumper switch 12 to "High" or "Low", together with the general-purpose input/output of the main processor 2 on the motherboard. 21, determining to load the first booting program 111 stored in one of the first storage blocks 111a of the flash memory chip 11, or loading the second booting program 112a stored in one of the second memory blocks 112a of the flash memory chip 11. Boot program 112. In this way, the present invention not only realizes a powerful improvement of the dual bootloader (Dual Bootloader) booting host, but also realizes the backup purpose of the booting program of the basic input/output system with a single flash memory chip 11; and, such a The results also bring great convenience to developers, users, and maintenance personnel.

(2) In addition, when the system displays that the loading of the first booting program 111 (or the second booting program 112) fails, the developer, the user, or the maintenance personnel can change the "High" of the jumper switch 12 by the pin cover 15 or "Low" makes the system available Load another normal boot program to get the system up and running.

It is to be understood that the foregoing detailed description of the embodiments of the present invention is not intended to Both should be included in the scope of the patent in this case.

11‧‧‧Flash memory chip

12‧‧‧jumper switch

13‧‧‧Logic gate

2‧‧‧Main processor

20‧‧‧Input/output unit

31‧‧‧Control bus

116‧‧‧Control feet

32‧‧‧ data bus

117‧‧‧Information pin

33‧‧‧ address bus

118‧‧‧ address feet

111‧‧‧First boot program

112‧‧‧Second boot program

110‧‧‧Basic input and output system

111a‧‧‧First storage block

112a‧‧‧Second storage block

121‧‧‧ bias pin

122‧‧‧Logic control pin

123‧‧‧ Grounding feet

131‧‧‧First logic input

132‧‧‧Second logic input

133‧‧‧Logic output

21‧‧‧General-purpose input/output埠

1181‧‧‧Highest bit address

15‧‧‧ Pins

Vcc‧‧‧ external bias

Claims (9)

A novel basic input/output system is disposed on a motherboard of a host, and includes: a flash memory chip mounted on the motherboard to couple a main processor on the motherboard And storing a basic input/output system having a first booting program and a second booting program mapped to the first booting program; wherein the first booting program and the second booting program are respectively stored in the flashing a first storage block and a second storage block of the memory chip; a jump pin switch mounted on the motherboard and having at least one biasing pin, a logic control pin and a ground pin And a logic gate disposed on the motherboard and having at least a first logic input, a second logic input, and a logic output; wherein the first logic input is coupled to the main a general purpose input/output port (GPIO) of the processor, the second logic input is coupled to the logic control pin of the jump pin switch, and the logic output is coupled To the flash memory chip; The main processor can output a first logic signal to the first logic input terminal through the universal input/output port, and output a jump pin switch by placing a pin on the jump pin switch. a second logic signal to the second logic input, so that the logic gate performs a logic operation on the first logic signal and the second logic signal A boot program control signal is outputted to the flash memory chip, thereby selectively loading the first boot program or the second boot program. The novel basic input/output system according to claim 1, wherein the flash memory chip is a NOR type flash memory chip. The novel basic input/output system of claim 1, wherein the logic gate is an XOR logic gate. The novel basic input/output system of claim 1, wherein the logic gate is composed of four NAND logic gates. The novel basic input/output system according to claim 1, wherein when the second logic signal output by the logic control pin of the jump pin switch is a high level signal, the first power on The program is one of the main booting programs of the basic input and output system, and the second booting program is a backup booting program. The novel basic input/output system according to claim 1, wherein when the second logic signal output by the logic control pin of the jump pin switch is a low level signal, the second power on The program is one of the main booting programs of the basic input and output system, and the first open The program is a backup boot program. The novel basic input/output system of claim 1, wherein the logic output of the logic gate is coupled to one of a plurality of address pins of the flash memory chip. Address pin. The novel basic input/output system according to claim 5, wherein, according to the second logic signal of the high level, the main processor can output the first level of the low level through the universal input/output port a logic signal, wherein the first boot program and the second boot program are respectively the main boot program and the backup boot program; or the main processor can output a high level through the universal input/output port The first logic signal is configured to cause the second booting program and the first booting program to be the primary booting program and the backup booting program, respectively. The novel basic input/output system according to claim 6, wherein the main processor can output the first level of the high level through the universal input/output port according to the second logic signal of the low level a logic signal, wherein the first boot program and the second boot program are respectively the backup boot program and the main boot program; or the main processor can output a low level through the general-purpose input/output port The first logic signal, in this way, respectively, the second boot program and the first open The program is the backup boot program and the main boot program.