Memory system and memory management method including the same

摘要

A multi-processor system includes a first processor, a second processor communicable with the first processor, a first non-volatile memory for storing first codes and second codes to respectively boot the first and second processors, the first memory communicable with the first processor, a second volatile memory designated for the first processor, a third volatile memory designated for the second processor, and a fourth volatile memory shared by the first and second processors.

主权项

1. A method for sharing a memory between a first processor and a second processor, comprising:
transmitting a token from a first processor to a second processor; accessing the memory by the second processor if the token is received, the memory being accessible by one of the first processor and the second processor at a time; after accessing the memory, transmitting the token from the second processor to the first processor; and accessing the memory by the first processor if the token is received, wherein if the token is not received by the second processor, sending a request signal for the token from the second processor back to the first processor, starting a timer, and if the timer expires prior to the token being transmitted to the second processor, generating a substitute token by the second processor, and wherein the token is transmitted between the first and second processors via a communication channel directly connected between the first and second processors, the communication channel having no intermediary token storage device between the first and second processors.