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Problem in booting DM814x EVM

Hello,

I set the EVM switches as follows:

SD boot mode: Switch S1, S1[5:1] ==> 10111
NAND/SPI Switch SW2, SW[2:1] ==> 01


Then, I run the following commands at the second stage of U-boot:

TI8148_EVM# setenv autoload no
TI8148_EVM# setenv bootfile uImage-dm814x-evm.bin
TI8148_EVM# setenv ipaddr 10.0.1.45
TI8148_EVM# setenv bootcmd 'dhcp;tftp 81000000 uImage-dm814x-evm.bin;bootm'
TI8148_EVM# setenv nfsserver 10.0.1.57
TI8148_EVM# setenv bootargs 'console=ttyO2,115200n8 root=/dev/nfs nfsroot=10.0.1.57:/tftpboot,nolock rw mem=128M ip=dhcp'
TI8148_EVM# setenv serverip 10.0.1.57
TI8148_EVM# saveenv
TI8148_EVM# boot

After loading the uImage, I receive the following message:

Bytes transferred = 2571428 (273ca4 hex)                                                                                                                       
## Booting kernel from Legacy Image at 81000000 ...                                                                                                            
   Image Name:   Arago/2.6.37-psp04.01.00.06/dm81                                                                                                              
   Image Type:   ARM Linux Kernel Image (uncompressed)                                                                                                         
   Data Size:    2571364 Bytes = 2.5 MiB                                                                                                                       
   Load Address: 80008000                                                                                                                                      
   Entry Point:  80008000                                                                                                                                      
   Verifying Checksum ... OK                                                                                                                                   
   Loading Kernel Image ... OK                                                                                                                                 
OK                                                                                                                                                             
                                                                                                                                                               
Starting kernel ...                                                                                                                                            
                                                                                                                                                               
Uncompressing Linux... done, booting the kernel.                                                                                                               

It freezes at this point and nothing happens afterwards. Please let me know why this happens. Thanks a lot.

Best Regards,

Mohammad