linux-2.6.30.4内核移植问题

大家好，最近在学内核移植，可是一直都出现错误，下面是我的内核移植串口打印的信息：
我的环境是Red Hat Enterprise 5
移植的内核：2.6.30.4
交叉编译器：4.3.3
busybox:1.13.0
U-Boot是天嵌光盘中自带的

串口打印信息：
Start Linux ...
Copy linux kernel from 0x00200000 to 0x30008000, size = 0x00200000 ... Copy Kernel to SDRAM done,NOW, Booting Linux......
Uncompressing Linux.......................................................................................... done, booting the kernel.
Linux version 2.6.30.4 (root@localhost.localdomain) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-176) ) #1 Mon Aug 23 10:04:21 CST 2010
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: SMDK2440
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, (c) 2004 Simtec Electronics
S3C244X: core 400.000 MHz, memory 100.000 MHz, peripheral 50.000 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0
NR_IRQS:85
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x30
console [ttySAC0] enabled
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 61900KB available (2552K code, 309K data, 88K init, 0K highmem)
Calibrating delay loop... 199.47 BogoMIPS (lpj=498688)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
net_namespace: 296 bytes
NET: Registered protocol family 16
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C24XX DMA Driver, (c) 2003-2004,2006 Simtec Electronics
DMA channel 0 at c4808000, irq 33
DMA channel 1 at c4808040, irq 34
DMA channel 2 at c4808080, irq 35
DMA channel 3 at c48080c0, irq 36
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
SCSI subsystem initialized
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NET: Registered protocol family 1
yaffs Aug 23 2010 09:57:49 Installing.
msgmni has been set to 121
alg: No test for stdrng (krng)
io scheduler noop registered (default)
s3c2440-uart.0: s3c2410_serial0 at MMIO 0x50000000 (irq = 70) is a S3C2440
s3c2440-uart.1: s3c2410_serial1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: s3c2410_serial2 at MMIO 0x50008000 (irq = 76) is a S3C2440
loop: module loaded
Driver 'sd' needs updating - please use bus_type methods
dm9000 Ethernet Driver, V1.31
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2440-nand s3c2440-nand: Tacls=2, 20ns Twrph0=3 30ns, Twrph1=2 20ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)
Scanning device for bad blocks
Bad eraseblock 712 at 0x000005900000
Bad eraseblock 953 at 0x000007720000
Bad eraseblock 1417 at 0x00000b120000
Bad eraseblock 1702 at 0x00000d4c0000
Creating 3 MTD partitions on "NAND 256MiB 3,3V 8-bit":
0x000000000000-0x000000040000 : "Boot Agent"
0x000000200000-0x000000500000 : "S3C2410 flash kernel"
0x000000500000-0x000010000000 : "S3C2410 flash yaffs2"
mice: PS/2 mouse device common for all mice
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq enabled
TCP cubic registered
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
end_request: I/O error, dev mtdblock2, sector 0
FAT: unable to read boot sector
VFS: Cannot open root device "mtdblock2" or unknown-block(31,2)
Please append a correct "root=" boot option; here are the available partitions:
1f00             256 mtdblock0 (driver?)
1f01            3072 mtdblock1 (driver?)
1f02          257024 mtdblock2 (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,2)
Backtrace:
[<c0022fd4>] (dump_backtrace+0x0/0x10c) from [<c01f3f70>] (dump_stack+0x18/0x1c)
r7:c38690bf r6:c02badc0 r5:00008000 r4:c3817f48
[<c01f3f58>] (dump_stack+0x0/0x1c) from [<c01f3fc0>] (panic+0x4c/0x124)
[<c01f3f74>] (panic+0x0/0x124) from [<c0008d7c>] (mount_block_root+0x188/0x2c8)
r3:00000000 r2:c383c5ec r1:c3817f48 r0:c0264398
[<c0008bf4>] (mount_block_root+0x0/0x2c8) from [<c0008f10>] (mount_root+0x54/0x6c)
[<c0008ebc>] (mount_root+0x0/0x6c) from [<c0009020>] (prepare_namespace+0xf8/0x18c)
r5:c001b83c r4:c001b84c
[<c0008f28>] (prepare_namespace+0x0/0x18c) from [<c0008478>] (kernel_init+0xc8/0xf4)
r7:00000000 r6:c001aeb8 r5:c001ac5c r4:c001aeb8
[<c00083b0>] (kernel_init+0x0/0xf4) from [<c0033f40>] (do_exit+0x0/0x620)
r7:00000000 r6:00000000 r5:00000000 r4:00000000

麻烦高手给讲解讲解一下吧，谢谢！我现在参考天嵌linux移植4.5版，做到了“让系统跑起来的step12：完善串口驱动”。把内核和文件系统烧到板子里就出现了上面的错误，一直困扰我好久了。

Unable to mount root fs on unknown-block.无法识别你的文件系统

我也是遇到这种问题,楼主的问题哈解决了啊?

遇到同样的问题！！

添加了对yaffs文件系统的支持并且移植yaffs文件系统了么？