i.MX Processors中的主题 Re: Can't load Kernel

Can't load Kernel

MarioMedinaArza — Fri, 24 Feb 2012 07:14:54 GMT

Hi,

I've been trying many times to have my iMX53 START BOARD run under my custom kernel. If I use Kernel that is supplied in the "Images" file downloaded from freescale, the card boots ok.

But whenever I use my custom Kernel, which was built with some drivers that I require (FTDI Serial mainly), it can't be loaded. This is the error message:

MMC read: dev # 0, block # 2048, count 6144 ... 6144 blocks read: OK
## Booting kernel from Legacy Image at 70800000 ...
   Image Name:   Linux-2.6.35.3-1129-g691c08a
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    3218068 Bytes = 3.1 MB
   Load Address: 70008000
   Entry Point: 70008000
   Verifying Checksum ... Bad Data CRC
ERROR: can't get kernel image!
MX53-LOCO U-Boot >

The Kernel image i got it from <ltb directory>/rootfs/boot/uImage after BUILT SUCCEDED appeared. Also i chose the board (imx53-loco) when configuring ltib

To copy to SD card used command:

sudo dd if=uImage of=/dev/mmcblk0 bs=512 seek=2048 && sync && sync

Has someone any suggestion regarding this issue?

Thanks in advance.

Re: Can't load Kernel

KrishnaPavan — Fri, 24 Feb 2012 08:48:17 GMT

Hi,

Verifying Checksum ... Bad Data CRC

Is a case of placing the image at a particular address in the SD_Card after placing the bootloader.

1. Instead of 8192 use 16384 or more and see.

2. Make sure you build your linux_kernel with make ARCH=arm

Regards :: Krishna Pavan

Re: Can't load Kernel

daiane_angolini — Fri, 24 Feb 2012 16:44:54 GMT

Can you, please, share your uImage size and your u-boot variables?

Re: Can't load Kernel

MarioMedinaArza — Fri, 24 Feb 2012 18:04:20 GMT

Hi guys,

Thanks for your suggestions. I was able to boot the kernel now. I was assigning 10,240 space for uboot and kernel, but the error was that I had to assign also in the "loadk" variable a little more. Instead of 0x1800, for a 3M Kernel I had to increase it

3218068 Bytes = 3.1 MB

0x1892 was the value I used for that extra 0.1MB and that was the thing. After modifying the value, the kernel was able to boot.

thanks to all!

Re: Can't load Kernel

liqi-c — Tue, 05 Jun 2018 06:27:52 GMT

So where are you modified ? in which file and which variable ?　thinks

i meet the same problem , but not the crc bad . when my kernel is bigger then 6.7M ,i can't start kernel . no any messages ,it's just reset and reset again