Can't boot into Linux

[vimac]

After pacman -Syu upgrade my archarm linux(including linux kernel), I reboot the cubieboard and got this message:

HELLO! BOOT0 is starting!
boot0 version : 1.5.0
dram size =1024
Succeed in opening nand flash.
Succeed in reading Boot1 file head.
The size of Boot1 is 0x00056000.
The file stored in 0X00000000 of block 2 is perfect.
Check is correct.
Ready to disable icache.
Succeed in loading Boot1.
Jump to Boot1.
[       0.178] boot1 version : 1.5.0
[       0.178] pmu type = 3
[       0.179] bat vol = 0
[       0.210] axi:ahb:apb=3:2:2
[       0.210] set dcdc2=1400, clock=1008 successed
[       0.212] key
[       0.224] no key found
[       0.224] flash init start
[       0.261] flash init finish
[       0.264] fs init ok
[       0.265] fattype FAT12
[       0.265] fs mount ok
[       0.270] script finish
[       0.271] power finish
[       0.280] BootMain start
[       0.280] 0
[       0.313] key value = 0
[       0.313] recovery key high 6, low 4
[       0.314] unable to find fastboot_key key_max value
[       0.321] test for multi os boot with display
[       0.323] logo name is invalid or dont need show logo
[       0.329] load kernel start
[       0.356] load kernel successed
[       0.356] start address = 0x4a000000
[       0.357] jump to


U-Boot 2013.01-05530-g8843079-dirty (Feb 04 2013 - 02:41:41) Allwinner Technology

Board: Cubieboard
I2C:   ready
DRAM:  1 GiB
NAND:  0 MiB
MMC:   SUNXI SD/MMC: 0
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   wemac
Hit any key to stop autoboot:  0
287 bytes read in 13 ms (21.5 KiB/s)
Loaded environment from /uEnv.txt
** File not found /boot/boot.scr **
reading /boot.scr
** Unable to read file /boot.scr **
** File not found /boot/uImage **

What should I do?

[vimac]

Resolved by downgrade kernel
http://log.vifix.cn/post/downgrade-archlinux-arm-cubieboard