BOOTING DISPLAY CONTROL METHOD AND RELATED PROCESSOR CHIP

• US 20140223158A1
• Filed: 09/14/2013
• Published: 08/07/2014
• Est. Priority Date: 02/05/2013
• Status: Abandoned Application

• Current Assignee: AutoChips INC. (Navinfo Company Limited)
• Original Assignee: MediaTek Singapore Pte. Ltd. (MediaTek, Inc.)
• Inventors: Zhou, Weibin, Yang, Kunzhen
• Application Number:
  US14/027,159
• Publication Number:
  US 20140223158A1
• Time in Patent Office: Days
• US Class Current: 713/2
• CPC Class Codes: G06F 9/4405 Initialisation of multiprocessor systems

Abstract

A booting display control method and a processor chip are disclosed in the present invention. The processor chip includes at least a first processor, a second processor and a display control module. The second processor is coupled to the first processor. The display control module is coupled to the first processor and the second processor. After the first processor and the second processor are activated, the first processor will load an image file of an operating system and start the operating system, and the second processor will control the display control module to realize a booting display function. The booting display control method and the processor chip can be implemented in the fast display during the booting process.

Claims

1. A booting display control method, based on a processor chip which includes at least a first processor, a second processor and a display control module, the booting display control method comprising:

starting the first processor;

starting the second processor;

loading an image file of an operating system via the first processor and starting the operating system; and

controlling the display control module to realize a booting display function via the second processor.

2. The booting display control method of claim 1, further comprising:

utilizing the second processor to cyclically detect whether a start-up of the operating system is complete;

when the start-up of the operating system is not complete yet, controlling the display control module to realize the booting display function via the second processor; and

when the start-up of the operating system is complete, controlling the display control module to realize the booting display function via the first processor.

3. The booting display control method of claim 2, wherein the step of utilizing the second processor to cyclically detect whether the start-up of the operating system is complete comprises:

controlling the second processor to detect a start-up state flag in a memory or a register shared by the first processor and the second processor, wherein after the start-up of the operating system is complete, the first processor sets the start-up state flag as ‘

start-up complete’

;

controlling the second processor to detect if the start-up state flag indicates ‘

start-up complete’

; and

when the start-up state flag indicates ‘

start-up complete’

, the second processor determines that the start-up of the operating system is complete.

4. The booting display control method of claim 2, wherein the step of controlling the display control module to realize the booting display function via the second processor comprises:

initializing the display control module via the second processor;

cyclically detecting a reversing state flag, and when the second processor detects that the reversing flag indicates ‘

reversing’

, controlling the display control module to display reversing video.

5. The booting display control method of claim 4, wherein the step of controlling the display control module to display the reversing video comprises:

displaying video obtained from a camera on a display screen; and

reading reversing data from an external controller and plotting reversing trajectory, and further superimposing a reversing trajectory plot on the video.

6. The booting display control method of claim 4, wherein the step of controlling the display control module to realize the booting display function via the first processor comprises:

after the start-up of the operating system is complete, notifying the second processor to stop detecting the reversing state flag and starting a reversing application program of the first processor so as to control the display control module via the first processor.

7. The booting display control method of claim 4, wherein the step of controlling the display control module to realize the booting display function via the second processor further comprises:

when the reversing state flag does not indicate ‘

reversing’

, displaying boot animation on the display screen.

8. The booting display control method of claim 2, wherein the step of controlling the display control module to realize the booting display function via the first processor comprises:

during the start-up of the operating system, displaying boot animation after initializing the display control module via the second processor; and

after the start-up of the operating system is complete, controlling the first processor to notify the second processor to stop displaying the booting animation, and utilizing the first processor to control the display control module.

9. The booting display control method of claim 1, wherein the step of starting the second processor further comprises:

starting the second processor through a boot loader program.

10. The booting display control method of claim 1, wherein the step of loading the image file of the operating system via the first processor and starting the operating system and the step of controlling the display control module to realize the booting display function via the second processor are performed simultaneously.

11. A processor chip for booting display control, comprising:

a first processor;

a second processor, coupled to the first processor; and

a display control module, coupled to the first processor and the second processor;

wherein after the first processor and the second processor are activated, the first processor loads an image file of an operating system and starts the operating system, and the second processor controls the display control module to realize a booting display function.

12. The processor chip of claim 11, wherein the second processor cyclically detects whether a start-up of the operating system is complete;

when the start-up of the operating system is not complete yet, the second processor controls the display control module to realize the booting display function; and

when the start-up of the operating system is complete, the first processor takes place of the second processor to control the display control module to realize the booting display function.

13. The processor chip of claim 12, wherein the second processor detects a start-up state flag in a memory or a register shared by the first processor and the second processor;

after the start-up of the operating system is complete, the first processor sets the start-up state flag as ‘

start-up complete’

; and

the second processor detects if the start-up state flag indicates ‘

start-up complete’

, wherein when the start-up state flag indicates ‘

start-up complete’

, the second processor determines that the start-up of the operating system is complete.

14. The processor chip of claim 11, wherein while the first processor is loading the image file of the operating system and starting the operating system, the second processor controls the display control module to realize the booting display function.

15. The processor chip of claim 11, wherein the second processor further initializes the display control module, and cyclically detects a reversing state flag;

and when the second processor detects that the reversing flag indicates ‘

reversing’

, the second processor controls the display control module to display reversing video.

16. The processor chip of claim 15, wherein the second processor controls the display control module to read reversing data from an external controller and plots reversing trajectory;

and

a reversing trajectory plot and video obtained from a camera are further superimposed on the display screen.

17. The processor chip of claim 15, wherein after the start-up of the operating system is complete, the first processor notifies the second processor to stop detecting the reversing state flag, and starts a reversing application program so as to control the display control module.

18. The processor chip of claim 15, wherein the processor chip further comprises a communication module;

the communication module includes a Universal Asynchronous Receiver/Transmitter (UART) interface, an Inter—

Integrated Circuit (I²C) interface, a Serial Peripheral Interface (SPI) interface, and a General Purpose Input/Output (GIPO) interface;

the first processor and the second processor obtain the reversing state flag from the external controller via the communication module.

19. The processor chip of claim 15, wherein when the second processor detects that the reversing state flag does not indicate ‘

reversing’

, the second processor controls the display control module to display boot animation.

20. The processor chip of claim 11, wherein during the start-up of the operating system, the second processor initializes the display control module and controls the display control module to display boot animation;

and after the start-up of the operating system is complete, the first processor notifies the second processor to stop displaying the booting animation, and controls the display control module.