Guide method and system of coprocessor

Abstract

The invention discloses a coprocessor boot method, which comprises the following steps: A. The main processor downloads the coprocessor boot program to the random access memory (RAM) connected to the coprocessor through the coprocessor ; B, the main processor triggers the coprocessor to run the coprocessor boot program in the RAM; after C, the coprocessor boot program runs, the coprocessor is activated by the coprocessor The running program is downloaded to the RAM connected to the coprocessor; D. The coprocessor boot program starts the coprocessor running program in the RAM. The invention also discloses a coprocessor guiding system, the system includes a main processor, a coprocessor and a RAM. The application of the invention can shorten the startup time of the application system and save the storage space of the external storage device connected to the main processor.

Description

technical field [0001] The invention relates to processor boot technology, in particular to a coprocessor boot method and system. Background technique [0002] At present, a coprocessor (Coprocessor) is being widely used in application systems such as mobile terminals and portable media players (PMP). The use of coprocessors can share part of the work of the main processor and make the application system more powerful. However, the coprocessor itself cannot be self-guided and needs the guidance of the main processor to start. Generally, self-guidance is simply referred to as self-guidance. [0003] The following uses an example to illustrate the process of starting the existing boot coprocessor. [0004] figure 1 Schematic diagram of the structure of the boot system for the existing coprocessor. see figure 1 , wherein, the CPU is the main processor, the storage device shown in the figure is the external storage device of the CPU, and the synchronous dynamic random acces...

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above process that the biggest disadvantage of the existing coprocessor boot method is that the startup time of the entire application system is relatively long

Because this method needs to start the main processor first, then the coprocessor running program stored in the main processor's external storage device is loaded into the coprocessor's external RAM by the main processor through the coprocessor, so that the entire application System startup time is relatively long

Moreover, if the coprocessor runs a large program, the loading process will take a long time, and since the main processor cannot run other programs during the loading process, this will reduce the operating efficiency of the main processor and make the startup of the application system slower

[0006] In addition, the running program of the coprocessor needs to occupy the space of the external storage device of the main processor, which causes an additional burden on the main processor, especially when the running program of the coprocessor is relatively large, the storage of the running program of the coprocessor The larger the storage space of the main processor's external storage device required by the program, the higher the requirements for the main processor's external storage device, which virtually increases the cost of the application system

Images