Memory controller for system on chip (SOC) chip system and method for implementing memory controller

Abstract

The invention discloses a memory controller for a system on chip (SOC) chip system and a method for implementing the memory controller. The memory controller comprises a bus interface module, a memory interface module connected with a nonvolatile memory, and a safety protection subunit module connected between the bus interface module and the memory interface module, wherein the safety protection subunit module comprises a plurality of safety protection subunits of which the safety attributes can be independently configured; each safety protection subunit is used for performing access protection on one safety memory space in the nonvolatile memory; and by setting different safety attributes of the safety protection subunits, each piece of main equipment on a bus has different access authority on each safety memory space. The memory controller can effectively protect the safety information of the nonvolatile memory and is particularly suitable for an SOC chip which is needed to divide a memory space into different blocks with different sizes and ensure that the access attributes of the blocks are different.

Description

technical field [0001] The invention relates to a data storage control technology in an SOC chip, in particular to a storage controller used in a secure SOC chip system for improving data security in a non-volatile memory, and a method for realizing the storage controller. Background technique [0002] Convenient information exchange methods emerge in endlessly, and the secure SOC (System on Chip) chip that accompanies information exchange emerges as the times require plays an increasingly critical role in information exchange, and is widely used in digital signatures, e-commerce, mobile payment and other fields. [0003] SOC chips often store important information related to the security of the entire system. If the storage space containing special information is not effectively protected, system security cannot be realized fundamentally. [0004] Due to the characteristic that the data will not be lost after power failure, the non-volatile memory plays an important role in...

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Problems solved by technology

[0011] The present invention proposes a storage controller for an SOC chip system and its implementation method. By setting the security attributes of different secure storage spaces in a non-volatile memory, different master devices have different access to the same storage space through configuration. Permission to solve the technical problem of poor security of non-volatile memory access in the current SOC chip system

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