分析U-Boot是如何启动内核的
1.uboot启动内核的代码缩减如下:s = getenv ("bootcmd");debug ("### main_loop: bootcmd="%s"
", s ? s : "<UNDEFINED>");if (bootdelay >= 0 && s && !abortboot (bootdelay)){run_command (s, 0);}2.假设bootcmd = nand read.jffs2 ...