SYSTEMS AND METHODS FOR OPTIMIZING MEMORY POWER CONSUMPTION IN A HETEROGENEOUS SYSTEM MEMORY

摘要

Systems, methods, and computer programs are disclosed for providing a heterogeneous system memory in a portable communication device. One system comprises a system on chip (SoC) coupled to a nonvolatile random access memory (NVRAM) and a volatile random access memory (VRAM). The SoC comprises an operating system for mapping a heterogeneous system memory comprising the NVRAM and the VRAM. The operating system comprises a memory manager configured to allocate a first portion of the NVRAM as a block device for a swap operation, a second portion of the NVRAM for program code and read-only data, and a third portion of the NVRAM for operating system page tables. The VRAM is allocated for a program heap and a program stack.

主权项

1. A method for optimizing memory power consumption in a portable communication device, the method comprising:
configuring a heterogeneous system memory for a system on chip on a portable communication device, the heterogeneous system memory comprising non-volatile random access memory (NVRAM) and volatile random access memory (VRAM) coupled to the SoC; allocating a first portion of the NVRAM as a block device for a swap operation, a second portion of the NVRAM for program code and read only data, and a third portion of the NVRAM for operating system page tables; and allocating the VRAM for a program heap and a program stack.