LINUX 实现将SSD作为二级缓存源代码，该源代码能够将SSD与普通硬盘组合成为一个拥有SSD的高速度与普通硬盘大容量的稳定快速存储系统-LINUX SSD as a secondary cache to achieve the source code, the source code can be a combination of SSD and regular hard drive SSD has become a high-speed large-capacity hard drives

DMA通道设计，实现数据快速传输，无需经过CPU，在2440 平台运行，成功编译，代码完整-DMA channel design, implement fast data transmission, without going through the CPU, running at 2440 platform, successfully compile, code integrity

主要实现boot功能，通过本程序能够使得系统正常运行，可以根据系统底层硬件进行相应的更给实现快速移植-main function is to boot het linux