CPU：ARM1176 s3c6410
使用友善的uboot烧写2.6.38.2内核及yaffs2文件系统。
用我自己的uboot可以引导内核正常启动，可以挂载文件系统（友善的自然也可以引导、挂载）。
当我向自己的uboot添加USB下载功能，并烧写内核及文件系统后，可以引导内核，但是挂载不了文件系统。
串口打印的信息和没有烧写文件系统时是一样的。
串口打印的信息如下：
……
s3c-sdhci s3c-sdhci.0: clock source 0: hsmmc (133250000 Hz)
s3c-sdhci s3c-sdhci.0: clock source 1: hsmmc (133250000 Hz)
s3c-sdhci s3c-sdhci.0: clock source 2: mmc_bus (24000000 Hz)
mmc0: SDHCI controller on samsung-hsmmc [s3c-sdhci.0] using ADMA
s3c-sdhci s3c-sdhci.1: clock source 0: hsmmc (133250000 Hz)
s3c-sdhci s3c-sdhci.1: clock source 1: hsmmc (133250000 Hz)
s3c-sdhci s3c-sdhci.1: clock source 2: mmc_bus (24000000 Hz)
mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
mmc1: SDHCI controller on samsung-hsmmc [s3c-sdhci.1] using ADMA
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
mmc0: mmc_rescan_try_freq: trying to init card at 300000 Hz
yaffs: dev is 32505858 name is "mtdblock2" rw
yaffs: passed flags ""
VFS: Mounted root (yaffs filesystem) on device 31:2.
Freeing init memory: 112K
Kernel panic - not syncing: No init found. Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
[<c002f07c>] (unwind_backtrace+0x0/0xec) from [<c01aaa94>] (panic+0x4c/0x178)
[<c01aaa94>] (panic+0x4c/0x178) from [<c0024604>] (init_post+0x108/0x138)
[<c0024604>] (init_post+0x108/0x138) from [<c00085b0>] (kernel_init+0x10c/0x14c)
[<c00085b0>] (kernel_init+0x10c/0x14c) from [<c002a860>]
(kernel_thread_exit+0x0/0x8)
用友善的uboot引导不了我的uboot烧写的内核，报如下错误：
NAND read: device 0 offset 0x80000, size 0x500000
s3c-nand: 1 bit error detected at byte 1242, correcting from 0x00 to 0x40...OK
s3c-nand: ECC uncorrectable error detected
s3c-nand: 1 bit error detected at byte 499, correcting from 0xe1 to 0xe9...OK
s3c-nand: ECC uncorrectable error detected
reading NAND page at offset 0x80000 failed
5242880 bytes read: ERROR
## Booting image at c0008000 ...
Boot with Image
Starting kernel ...
undefined instruction
pc : [<50008004>] lr : [<c7e22ed0>]
sp : c7fffdfc ip : 7f005000 fp : c7e2ce6c
r10: 00000002 r9 : 00000000 r8 : 6c976a6f
r7 : 00000000 r6 : 00000000 r5 : 50000124 r4 : 00000000
r3 : 50008000 r2 : 50000100 r1 : 000009d8 r0 : 00000000
Flags: nZCv IRQs off FIQs off Mode SVC_32
Resetting CPU ...
应该是ECC的问题，由于是新手，还请高手们讲解得详细一点，万分感谢！
