Memory monitor method, memory access controller and SoC system

Abstract

The invention provides a memory monitor method, a memory access controller and a SoC system and relates to the communication field. By means of the memory monitor method, the memory access controller and the SoC system, when abnormal memory access occurs, modules having illegal access to memory can be quickly and accurately positioned. The method comprises following steps: obtaining a memory access command (comprising an address of memory to be accessed, identification and read-write attributes of the memory access module) sent by a memory access module; obtaining a legal access condition corresponding to the memory address to be accessed, wherein the condition comprises at least one identification of a module, and at least one read or write authority owned by a module to the memory address to be accessed; determining whether the identification of the memory access module belongs to the at least one module identification and whether the read-write attributes accord with the read or write authorities; if the identification of the memory access module does not belong to the at least one module identification and / or the read-write attributes do not accord with the read or write authorities, recording the memory address to be accessed, the identification of the memory access module and the read-write attributes.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a memory monitoring method, a memory access controller and a SoC system. Background technique [0002] In a system-on-chip (SoC) system, there are many different modules, such as multiple hardware-specific logics, various peripherals (Intelligent Peripheral, IP), and a central processing unit (Central Processing Unit, CPU) running in various applications, etc. Each module can share memory. Due to the complexity of the SoC system, there will be a problem of memory access out of bounds, that is, a module accesses a memory address that it should not access, resulting in the module not operating normally, and even causing the SoC system to crash. [0003] At present, it is generally to set a characteristic value (such as: 0xaa) at a certain memory address when the SoC system initializes or releases memory. When the characteristic value of a certain memory address is detected to b...

AI Technical Summary

Problems solved by technology

[0004] However, this method can usually only determine whether the memory address is accessed out of bounds, and cannot determine which module has accessed the memory out of bounds.

It is necessary to check each module that may access the memory address one by one to locate which module has accessed the memory address out of bounds. The cycle of locating the fault problem is long and the efficiency is low

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