从启动Log上很容易看出，现在内核无法挂在根文件系统，在下一篇文章中，我会制作根文件系统。
本文作者：girlkoo
本文链接：http://blog.csdn.net/girlkoo/article/details/41223733
AM335x(TQ335x)学习笔记――启动内核(三)
.517159] omap-gpmc 50000000.gpmc: GPMC revision 6.0
[ 1.524094] nand: device found, Manufacturer ID: 0xec, Chip ID: 0xd3
[ 1.530939] nand: Samsung NAND 1GiB 3,3V 8-bit
[ 1.535638] nand: 1024MiB, SLC, page size: 2048, OOB size: 64
[ 1.541640] nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled
[ 1.547760] omap2-nand: probe of omap2-nand.0 failed with error -22
[ 1.663619] tps65910 0-002d: No interrupt support, no core IRQ
[ 1.680749] vrtc: 1800 mV
[ 1.684124] vrtc: supplied by vbat
[ 1.691498] vio: at 1500 mV
[ 1.694737] vio: supplied by vbat
[ 1.701644] vdd_mpu: 912 <--> 1312 mV at 1325 mV
[ 1.706882] vdd_mpu: supplied by vbat
[ 1.713875] vdd_core: 912 <--> 1150 mV at 1137 mV
[ 1.719187] vdd_core: supplied by vbat
[ 1.725964] vdd3: 5000 mV
[ 1.731302] vdig1: at 1800 mV
[ 1.734706] vdig1: supplied by vbat
[ 1.741264] vdig2: at 1800 mV
[ 1.744671] vdig2: supplied by vbat
[ 1.751054] vpll: at 1800 mV
[ 1.754365] vpll: supplied by vbat
[ 1.760730] vdac: at 1800 mV
[ 1.764036] vdac: supplied by vbat
[ 1.770317] vaux1: at 1800 mV
[ 1.773717] vaux1: supplied by vbat
[ 1.780114] vaux2: at 3300 mV
[ 1.783514] vaux2: supplied by vbat
[ 1.789893] vaux33: at 3300 mV
[ 1.793397] vaux33: supplied by vbat
[ 1.799920] vmmc: 1800 <--> 3300 mV at 3300 mV
[ 1.804999] vmmc: supplied by vbat
[ 1.810938] vbb: at 3000 mV
[ 1.814411] vbb: supplied by vbat
[ 1.819729] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[ 1.833220] omap_i2c 4802a000.i2c: bus 1 rev0.11 at 100 kHz
[ 1.877209] UBI error: ubi_init: cannot open mtd 9, error -19
[ 1.944943] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[ 1.951329] davinci_mdio 4a101000.mdio: detected phy mask ffffffde
[ 1.961340] libphy: 4a101000.mdio: probed
[ 1.965645] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver unknown
[ 1.974006] davinci_mdio 4a101000.mdio: phy[5]: device 4a101000.mdio:05, driver unknown
[ 1.983572] cpsw 4a100000.ethernet: Detected MACID = c4:ed:ba:88:b5:e4
[ 1.994560] input: volume_keys@0 as /devices/volume_keys@0/input/input0
[ 2.005474] omap_rtc 44e3e000.rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
[ 2.014497] sr_init: No PMIC hook to init smartreflex
[ 2.020120] sr_init: platform driver register failed for SR
[ 2.043081] lis3_reg: disabling
[ 2.049937] UBIFS error (pid 1): ubifs_mount: cannot open "ubi0:rootfs", error -19
[ 2.058011] VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0): error -19
[ 2.066393] Please append a correct "root=" boot option; here are the available partitions:
[ 2.075257] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 2.083990] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)（7）小结