[U-Boot] Booting uImage on the mx31

[U-Boot] Booting uImage on the mx31

[alfred steele]

Hi,

I am using an uImage generated by LTIB .  I am not sure how the ideal
uImage is generated for the PDK board.
I try booting this uimage from RAM and then load it at 80008000.

It gets stuck after "done, booting the kernel." Please see the bootup
messages below.

Any hints?  I hope with, 0x80008000 as the load address on the MX31,
you eliminate the cause of one probable failure, overlay memory  with
the existing code on RAM e.g. existing u-boot and the compressed
kernel image

mc911x: MAC 92:92:92:bb:bb:bb
TFTP from server 206.44.18.25; our IP address is 206.44.18.31
Filename 'uImage_spin2'.
Load address: 0x80800000
Loading: #################################################################
        #################################################
done
Bytes transferred = 1665060 (196824 hex)
## Booting kernel from Legacy Image at 80800000 ...
  Image Name:   Linux-2.6.24-140-g68eb4b4
  Created:      2009-04-23   3:28:44 UTC
  Image Type:   ARM Linux Kernel Image (uncompressed)
  Data Size:    1664996 Bytes =  1.6 MB
  Load Address: 80008000
  Entry Point:  80008000
  Verifying Checksum ... OK
  Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux.............................................................
............................................... done, booting the kernel.

<IT freezes here>


Thanks,
Alfred.

[U-Boot] Booting uImage on the mx31

[Wolfgang Denk]

Dear alfred steele,

In message <528f13590904230720n14e87cchb87505c1de085be5@mail.gmail.com> you wrote:
> 
> I am using an uImage generated by LTIB .  I am not sure how the ideal
> uImage is generated for the PDK board.
...
> Starting kernel ...

U-Boot's responsibility end's here.

> Uncompressing Linux.............................................................
> ............................................... done, booting the kernel.
> 
> <IT freezes here>

Attach a BDI and debug where it's hanging. Eventually just your
machine ID is wrong.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Make it right before you make it faster.

[U-Boot] Booting uImage on the mx31

[alfred steele]

Hi Wolfgang,
Thanks for the inputs.
So what you are saying that we have eliminated all cases of the
bootloader being at fault here except for the mach id mismatch.??  How
do i verify the mach id mismatch. Is it the same id i see on a
"bdinfo" dump on  uboot.   I looked at linux/include/asm/mach-types.h
in linux . Is that the correct place to look at?

How do i debug this kind of an issue on the BDI since it may fall
between the thin line of separation between MMU disabled and
reenabled.


Can i put a breakpoint on a specific_thing like start_kernel ..or do
you mean doing a backtrace from the point it hangs?  I am using PDK
which actually limits me to change boot switches for booting it from
NAND  or RAM.


On Thu, Apr 23, 2009 at 11:05 AM, Wolfgang Denk <wd@denx.de> wrote:
> Dear alfred steele,
>
> In message <528f13590904230720n14e87cchb87505c1de085be5@mail.gmail.com> you wrote:
>>
>> I am using an uImage generated by LTIB . ?I am not sure how the ideal
>> uImage is generated for the PDK board.
> ...
>> Starting kernel ...
>
> U-Boot's responsibility end's here.
>
>> Uncompressing Linux.............................................................
>> ............................................... done, booting the kernel.
>>
>> <IT freezes here>
>
> Attach a BDI and debug where it's hanging. Eventually just your
> machine ID is wrong.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH, ? ? MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> Make it right before you make it faster.
>

[U-Boot] Booting uImage on the mx31

[alfred steele]

Hi Wolfgang,


Thanks for the inputs.
So what you are saying that we have eliminated all cases of the
bootloader being at fault here except for the mach id mismatch.??  How
do i verify the mach id mismatch. Is it the same id i see on a
"bdinfo" dump on  uboot.   I looked at linux/include/asm/mach-types.h
in linux . Is that the correct place to look at?

[U-Boot] Booting uImage on the mx31

[Daniel Mack]

On Thu, Apr 23, 2009 at 09:20:41AM -0500, alfred steele wrote:
> Any hints?  I hope with, 0x80008000 as the load address on the MX31,
> you eliminate the cause of one probable failure, overlay memory  with
> the existing code on RAM e.g. existing u-boot and the compressed
> kernel image
> 
> mc911x: MAC 92:92:92:bb:bb:bb
> TFTP from server 206.44.18.25; our IP address is 206.44.18.31
> Filename 'uImage_spin2'.
> Load address: 0x80800000
> Loading: #################################################################
>         #################################################
> done
> Bytes transferred = 1665060 (196824 hex)
> ## Booting kernel from Legacy Image at 80800000 ...
>   Image Name:   Linux-2.6.24-140-g68eb4b4
>   Created:      2009-04-23   3:28:44 UTC
>   Image Type:   ARM Linux Kernel Image (uncompressed)
>   Data Size:    1664996 Bytes =  1.6 MB
>   Load Address: 80008000
>   Entry Point:  80008000
>   Verifying Checksum ... OK
>   Loading Kernel Image ... OK
> OK
> 
> Starting kernel ...
> 
> Uncompressing Linux.............................................................
> ............................................... done, booting the kernel.
> 

See http://lists.arm.linux.org.uk/lurker/message/20081210.174754.29691349.en.html