tftp 20001000 uImage

TFTP from server 155.69.148.144; our IP address is 155.69.148.143
Filename 'uImage'.
Load address: 0x20001000
Loading: *#################################################################
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done
Bytes transferred = 1257744 (133110 hex)
U-Boot> tftp 21000000               setbo  env bootargs initrd- =0x21000000

U-Boot> tftp 21000000 2.cpio.gz

TFTP from server 155.69.148.144; our IP address is 155.69.148.143
Filename '2.cpio.gz'.
Load address: 0x21000000
Loading: *#################################################################
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done
Bytes transferred = 2560973 (2713cd hex)
U-Boot> load    bot otm 20000 1000

## Booting image at 20001000 ...
   Image Name:   Linux-2.6.21.7
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1257680 Bytes =  1.2 MB
   Load Address: 20008000
   Entry Point:  20008000
   Verifying Checksum ... OK
OK

Starting kernel ...

Uncompressing Linux................................................................................. done, booting the kernel.
Linux version 2.6.21.7 (lkp@ubuntu) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #12 PREEMPT Wed Dec 14 18:24:58 PST 2011
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
Machine: Sarge AT91RM9200 SBC
Memory policy: ECC disabled, Data cache writeback
Clocks: CPU 179 MHz, master 59 MHz, main 18.432 MHz
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
Built 1 zonelists.  Total pages: 8128
Kernel command line: initrd=0x21000000
AT91: 96 gpio irqs in 3 banks
PID hash table entries: 128 (order: 7, 512 bytes)
Console: colour dummy device 80x30
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Memory: 32MB = 32MB total
Memory: 29864KB available (2260K code, 218K data, 100K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
AT91: Power Management (with slow clock mode)
Generic PHY: Registered new driver
SCSI subsystem initialized
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 1024 (order: 2, 20480 bytes)
TCP bind hash table entries: 1024 (order: 2, 20480 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
io scheduler noop registered
io scheduler anticipatory registered (default)
AT91 Watchdog Timer enabled (5 seconds, nowayout)
atmel_usart.0: ttyS0 at MMIO 0xfefff200 (irq = 1) is a ATMEL_SERIAL
atmel_usart.1: ttyS1 at MMIO 0xfffc4000 (irq = 7) is a ATMEL_SERIAL
atmel_usart.2: ttyS2 at MMIO 0xfffc0000 (irq = 6) is a ATMEL_SERIAL
atmel_usart.3: ttyS3 at MMIO 0xfffc8000 (irq = 8) is a ATMEL_SERIAL
atmel_usart.4: ttyS4 at MMIO 0xfffcc000 (irq = 9) is a ATMEL_SERIAL
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
eth0: Link now 100-FullDuplex
eth0: AT91 ethernet at 0xfefbc000 int=24 100-FullDuplex (12:22:33:44:55:66)
eth0: Davicom 9161 PHY (Copper)
Linux video capture interface: v2.00
physmap platform flash device: 00200000 at 10000000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
Support for command set 0002 not present
gen_probe: No supported Vendor Command Set found
physmap-flash physmap-flash.0: map_probe failed
No SmartMedia card inserted.
at91_nand: probe of at91_nand failed with error 6
mtd_dataflash spi0.0: AT45DB161x (2112 KBytes)
at91_cf: irqs det #88, io #0
mice: PS/2 mouse device common for all mice
at91_rtc at91_rtc: rtc core: registered at91_rtc as rtc0
AT91 Real Time Clock driver.
i2c /dev entries driver
at91_i2c at91_i2c: AT91 i2c bus driver.
AT91 MMC: 4 wire bus mode not supported by this driver - using 1 wire
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
at91_rtc at91_rtc: setting the system clock to 1998-01-01 00:04:42 (883613082)
VFS: Cannot open root device "<NULL>" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)