cmdline是一个kv结构,就是uboot参数传给kernel使用的

举例:

Kernel command line: user_debug=31 
storagemedia=mtd 
androidboot.storagemedia=mtd 
androidboot.mode=normal 
mac=00FA89112233 serial=LONBON12345  
earlycon=uart8250,mmio32,0xff570000 
console=ttyFIQ0 root=/dev/mtdblock3 
rootfstype=cramfs 
snd_aloop.index=7 
mtdparts=spi-
nand0:0x100000@0x200000(vnvm),
0x800000@0x300000(uboot),
0x800000@0xb00000(boot),
0x7800000@0x1300000(rootfs),
0x100000@0x8b00000(lbcmd),
0x100000@0x8c00000(lbflash),
0x100000@0x8d00000(lbflash2),
0x100000@0x8e00000(lbcfg),
0x100000@0x8f00000(lbcfg2),
0x500000@0x9000000(backup),
0x3c00000@0x9500000(dataro),
0x1f00000@0xd100000(datarw),
0xf60000@0xf000000(factory)