上海比较好的 做soc的公司有哪几家？

咋自我鄙视了，
搭个架构，写个dma，弄这样那样的bridge，
搞个验证环境
谢谢firmware
还是蛮多活的

System-on-a-chip or system on chip (SoC or SOC) refers to integrating all components of a computer or other electronic system into a single integrated circuit (chip). It may contain digital, analog, mixed-signal, and often radio-frequency functions – all on a single chip substrate. A typical application is in the area of embedded systems.
SOC必需要有处理器吗？