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Failed to boot the external kernel on TWR-LS1021A

Question asked by Takumi Shimada on Feb 9, 2015
Latest reply on Feb 15, 2015 by Takumi Shimada



I am trying to boot kernel built by Linux SDK v1.7 for QorIQ Processors from TFTP on TWR-LS1021A.


According to the manual(Software Deplyoment Guides->Boards->TWR-LS1021A->Deployment->RamdiskDeployment form TFTP), I sent command from serial,


setenv bootargs 'root=/dev/ram rw ramdisk_size=40000000 console=ttyS0,115200'


tftp 83000000 ls1021atwr/uImage

tftp 88000000 ls1021atwr/fsl-image-core-ls1021atwr.ext2.gz.u-boot

tftp 8f000000 ls1021atwr/uImage-ls1021a-twr.dtb

bootm 83000000 88000000 8f000000


But, the kernel seems to stop after the output as follow:



## Booting kernel from Legacy Image at 83000000 ...

   Image Name:   Linux-3.12.19-rt30+ls1+g6619b8b

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3079856 Bytes = 2.9 MiB

   Load Address: 80008000

   Entry Point:  80008000

   Verifying Checksum ... OK

## Loading init Ramdisk from Legacy Image at 88000000 ...

   Image Name:   fsl-image-core-ls1021atwr-201502

   Image Type:   ARM Linux RAMDisk Image (gzip compressed)

   Data Size:    21286678 Bytes = 20.3 MiB

   Load Address: 00000000

   Entry Point:  00000000

   Verifying Checksum ... OK

## Flattened Device Tree blob at 8f000000

   Booting using the fdt blob at 0x8f000000

   Loading Kernel Image ... OK

   Loading Ramdisk to bdb13000, end bef5ff16 ... OK

   Loading Device Tree to bdb0a000, end bdb120ca ... OK


Starting kernel ...



I tried to access to the board from ssh, but it also failed.