[U-Boot] Linux hangs after Starting kernel ...message

[Andrejs Cainikovs]

Sorry, i have no ideas where your problem is related.
At the start i was thinking this could be the memory related problem, 
but apperantly not...
Maybe someone in this list will have similar experience.

Kind regards,
Andrejs Cainikovs


Batsayan Das wrote:
> Hello,
>
> We are using arm926ejs based custom board.
> We are able to get u-boot prompt using BDI2000. We are also able to get 
> Linux prompt using BDI. The serial console is working fine for both the 
> cases.
>
> Now we want to run Linux from u-boot prompt (using bootm ). We got the 
> u-boot prompt by running u-boot using BDI2K. Then we use kermit to 
> transfer uImage to suitable memory location and execute bootm command.
>
> When we execute "bootm 0x5000000" command it gives the "Starting kernel 
> ...". After that nothing is printed in the serial console. We have 
> verified "http://www.denx.de/wiki/view/DULG/LinuxPostMortemAnalysis" that 
> "__log_buf" gives the exact booting sequences what we used to get when 
> running vmlinux.bin from BDI.
>
> ****LOG  START******
>
> TEST # loadb 0x5000000
> ## Ready for binary (kermit) download to 0x05000000 at 38400 bps...
> ## Total Size      = 0x0012db0f = 1235727 Bytes
> ## Start Addr      = 0x05000000
> TEST # bootm 0x5000000
> ## Booting kernel from Legacy Image at 05000000 ...
>    Image Name:   TEST Kernel Image
>    Image Type:   ARM Linux Kernel Image (gzip compressed)
>    Data Size:    1235663 Bytes =  1.2 MB
>    Load Address: 02000000
>    Entry Point:  02000000
>    Uncompressing Kernel Image ... OK
>
> Starting kernel ...
>
> *****LOG END*****
>
>
> I use "console=ttyS0,38400n8" as boot option in Linux. The same console 
> option
> gives the serial port data when we execute vmlinux.bin using BDI.
>
> The brief memory map is like this
> The SDRAM starts at 0x00000000 (total 256 MB)
> u-boot load address is 0x00100000
> uImage load address is 0x05000000
> Kernel Load Address/Entry Point : 0x02000000 ( I use mkimage tool to 
> generate uImage from vmlinux, the command I use is mkimage -A arm -O linux 
> -T kernel -C gzip -a 0x2000000 -e 0x2000000 -n "TEST Kernel Image" -d 
> vmlinux.bin.gz  uImage")
>
> Pls help me where should I investigate to get Linux serial data.
>
> Thanks in advance.
>
> Regards,
> Batsayan Das
> Tata Consultancy Services
> Mailto: batsayan.das at tcs.com
> Website: http://www.tcs.com
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