Android2.3.4编译问题

我想修改一下android的开机画面，所以要重新编译android系统，编译之前修改了两处地方，1、将/system/core/init/init.c文件中开机文字ANDROID替换成自己的文字。2、替换了/frameworks/base/core/res/assets/images/android-logo-mask.png文件。
我的编译环境是ubuntu10.04, arm-linux-gcc 也是友善提供的4.5.1版本，按照编译提示安装了一些包之后就编译完成了，生成的rootfs_dir文件大小为61.6MB，共618项。用mktools生成的rootfs_android-mlc2.ubi文件只有62MB（貌似比友善提供的小）。
然后我烧到板子上，出现小企鹅之后，开机第二屏的画面就是进不去，直接就重启又进入小企鹅。
不知道到底什么原因？？？

补充一下串口调试信息：
load kernel
.....中间省略
android init
android_probe pdata: c06dac40
android_bind
android_usb gadget: android_usb ready
f_adb init
android_register_function adb
f_mass_storage init
fsg_probe pdev: c06da860, pdata: c06dabc8
android_register_function usb_mass_storage
android_usb gadget: Mass Storage Function, version: 2009/09/11
android_usb gadget: Number of LUNs=1
lun0: LUN: removable file: (no medium)
adb_bind_config
mice: could not register psaux device, error: -16
mice: PS/2 mouse device common for all mice
input: gpio-keys as /devices/platform/gpio-keys/input/input0
S3C Touchscreen driver, (c) 2010 FriendlyARM
touchscreen got loaded successfully : 12 bits
touchscreen-1wire       initialized
backlight-1wire initialized
input: TouchScreen Pipe as /devices/virtual/input/input1
ts-if   initialized
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c-rtc s3c64xx-rtc: rtc disabled, re-enabling
using rtc device, s3c, for alarms
s3c-rtc s3c64xx-rtc: rtc core: registered s3c as rtc0
i2c /dev entries driver
Linux video capture interface: v2.00
usbcore: registered new interface driver usbvision
USBVision USB Video Device Driver for Linux : 0.9.10
usbcore: registered new interface driver pvrusb2
pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
pvrusb2: Debug mask is 31 (0x1f)
usbcore: registered new interface driver zr364xx
zr364xx: Zoran 364xx
usbcore: registered new interface driver stkwebcam
gspca: main v2.10.0 registered
usbcore: registered new interface driver hdpvr
usbcore: registered new interface driver s2255
s3c-fimc: controller 0 registered successfully
s3c-fimc: controller 1 registered successfully
FIMC Driver, 2010 ported by FriendlyARM http://www.arm9.net
ov965x: probe
s3c-fimc: i2c transfer error
s3c-fimc: i2c transfer error
s3c-fimc: i2c transfer error
s3c-fimc: i2c transfer error
s3c-fimc: ov965x: Product ID fb:fb Manufacturer ID fb:fb
parent clock for camera: 266.000 MHz, divisor: 11
[CAM]RESET CAM.
S3C PostProcessor Driver v3.12, (c) 2009 Samsung Electronics
S3C6410 TV encoder Driver, (c) 2008 Samsung Electronics
S3C6410 TV encoder Driver init OK.
S3C6410 TV scaler Driver, (c) 2008 Samsung Electronics
S3C6410 TV scaler Driver init OK.
S3C JPEG Driver, (c) 2007 Samsung Electronics
s3c-g2d: Driver loaded succesfully
s3c-g2d: Module initialized.
s3c_g3d: clock enabled
s3c-g3d: detected FIMG-3DSE version 1.5.0
s3c-g3d: Driver loaded succesfully
s3c-g3d: Module initialized.
usbcore: registered new interface driver uvcvideo
USB Video Class driver (v0.1.0)
Bluetooth: HCI UART driver ver 2.2
Bluetooth: HCI H4 protocol initialized
Bluetooth: HCILL protocol initialized
Bluetooth: Generic Bluetooth USB driver ver 0.6
usbcore: registered new interface driver btusb
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
s3c-sdhci s3c-sdhci.0: clock source 0: hsmmc (133000000 Hz)
s3c-sdhci s3c-sdhci.0: clock source 1: hsmmc (133000000 Hz)
s3c-sdhci s3c-sdhci.0: clock source 2: mmc_bus (84666666 Hz)
mmc0: SDHCI controller on samsung-hsmmc [s3c-sdhci.0] using ADMA
s3c-sdhci s3c-sdhci.1: clock source 0: hsmmc (133000000 Hz)
s3c-sdhci s3c-sdhci.1: clock source 1: hsmmc (133000000 Hz)
s3c6400_setup_sdhci_cfg_card: CTRL 2=c0004120, 3=80808080
s3c-sdhci s3c-sdhci.1: clock source 2: mmc_bus (84666666 Hz)
mmc1: SDHCI controller on samsung-hsmmc [s3c-sdhci.1] using ADMA
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
logger: created 64K log 'log_main'
logger: created 256K log 'log_events'
logger: created 64K log 'log_radio'
logger: created 64K log 'log_system'
asoc: AC97 HiFi <-> s3c-ac97 mapping ok
s3c6400_setup_sdhci_cfg_card: CTRL 2=c0004120, 3=00008080
mmc0: new high speed SDHC card at address e624
mmcblk0: mmc0:e624 SU04G 3.69 GiB
mmcblk0: p1
s3c6400_setup_sdhci_cfg_card: CTRL 2=c0004120, 3=80808080
ALSA device list:
  #0: MINI6410 (WM9713)
TCP cubic registered
NET: Registered protocol family 17
Bluetooth: L2CAP ver 2.15
Bluetooth: L2CAP socket layer initialized
Bluetooth: SCO (Voice Link) ver 0.6
Bluetooth: SCO socket layer initialized
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM ver 1.11
Bluetooth: BNEP (Ethernet Emulation) ver 1.3
Bluetooth: HIDP (Human Interface Emulation) ver 1.2
VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
s3c-rtc s3c64xx-rtc: setting system clock to 2000-10-16 15:03:49 UTC (971708629)
Freeing init memory: 1456K
UBIFS: mounted UBI device 0, volume 0, name "FriendlyARM-root"
UBIFS: file system size:   2063351808 bytes (2014992 KiB, 1967 MiB, 1999 LEBs)
UBIFS: journal size:       12517376 bytes (12224 KiB, 11 MiB, 13 LEBs)
UBIFS: media format:       w4/r0 (latest is w4/r0)
UBIFS: default compressor: lzo
UBIFS: reserved for root:  0 bytes (0 KiB)
1Wire touchscreen OK
/init: line 103: can't open /r/dev/console: no such file
Kernel panic - not syncing: Attempted to kill init!
[<c01799a4>] (unwind_backtrace+0x0/0xe4) from [<c051984c>] (panic+0x68/0x194)
[<c051984c>] (panic+0x68/0x194) from [<c01918f4>] (do_exit+0x68/0x664)
[<c01918f4>] (do_exit+0x68/0x664) from [<c019221c>] (do_group_exit+0xb0/0xe4)
[<c019221c>] (do_group_exit+0xb0/0xe4) from [<c0192260>] (sys_exit_group+0x10/0x18)
one_wire_status: 2
[<c0192260>] (sys_exit_group+0x10/0x18) from [<c0174e60>] (ret_fast_syscall+0x0/0x30)
Rebooting in 5 seconds..one_wire_status: 4
arch_reset: atLoad Kernel...
Uncompressing Linux... done, booting the kernel.