DM385 在## Starting application at 0x81000000处挂起

U-Boot 2010.06 (Jun 09 2014 - 23:17:21) DM385_IPNC_3.50.00
DM385-GP rev 1.0
ARM clk: 600MHz
DDR clk: 533MHz
L3 clk: 200MHz
IVA clk: 450MHz
ISS clk: 400MHz
DSP Default OFF
DSS Default OFF
DRAM: 1 GiB
NAND: HW ECC BCH8 Selected
256 MiB
Using default environment
The 2nd stage U-Boot will now be auto-loaded
Please do not interrupt the countdown till DM385_IPNC prompt if 2nd stage is already flashed
Hit any key to stop autoboot: 0
TI-MIN#loadb
## Ready for binary (kermit) download to 0x81000000 at 115200 bps...
## Total Size = 0x00030bbc = 199612 Bytes
## Start Addr = 0x81000000
TI-MIN#go 0x81000000
## Starting application at 0x81000000 ...

我用的是3.5.0的rdk，正常配置后一直在这里挂起，使用开发包里的uboot也是一样。请问是什么原因？ 以下是我的Rules.make的配置

SYSTEM_PLATFORM := IPNC
#SYSTEM_PLATFORM := EVM
# Build configuration
APP_BUILD_CFG := debug
#APP_BUILD_CFG := release
# Binary to boot from NAND or SDCARD
BINARY_MODE := nand
#BINARY_MODE := sd
# Values are "DM385" and "DM812x"
IPNC_DEVICE := DM385
#IPNC_DEVICE := DM812x
# Values are "LOW_POWER" and "FULL_FEATURE"
IPNC_CONFIG := FULL_FEATURE
#IPNC_CONFIG := LOW_POWER
# Memory foot print
#MEMORY_CONFIG := 256MB
MEMORY_CONFIG := 512MB
# UBIFS mtd-utils mode
MTD_UTILS_MODE := 64bit
#MTD_UTILS_MODE := 32bit
ifeq ($(IPNC_DEVICE), DM812x)
IMGS_ID := IMGS_MICRON_MT9J003
#IMGS_ID := IMGS_MICRON_AR0330
#IMGS_ID := IMGS_MICRON_AR0331
#IMGS_ID := IMGS_PANASONIC_MN34041
#IMGS_ID := IMGS_OMNIVISION_OV10630
else
#IMGS_ID := IMGS_MICRON_MT9J003
IMGS_ID := IMGS_MICRON_AR0331
#IMGS_ID := IMGS_PANASONIC_MN34041
#IMGS_ID := IMGS_SONY_IMX136
#IMGS_ID := IMGS_SONY_IMX104
#IMGS_ID := IMGS_MICRON_MT9M034
endif