ARM target not boot after remap memory

ARM target not boot after remap memory

[Mike Rapoport]

(add LAKLM to CC)

Robin Theunis wrote:
> Dear (Embedded)-Kernel-Devs,
> 
> I'm trying to build linux 2.6.34.1 for a AT91RM9200 target. The whole
> build process is successful because I get correct kernel images and
> also a uImage for U-boot.
> The U-boot version is 2010.08. I have build the whole system on a
> 64bit ubuntu machine. I use the latest buildroot to make the toolchain
> and etc. At this moment I have a
> openocd jtag dongle connected to my target for debug sessions.
> I have check that the machine id/type are correct. I have gotten those
> error messages of a unsupported target. I have resolved those errors.
> The target is self is a AT91RM9200 with 64MiB ram and 16MiB cfi flash.
> The boot args of u-boot are "console=ttyS0,115200n8
> root=/dev/mtdblock0 rootfstype=jffs2 mem=64M".
> 
> The problem is now when linux kernel is booting, nothing happens.
> 
> ---
> U-Boot> bootm
> ## Booting kernel from Legacy Image at 21000000 ...
>    Image Name:   Linux-2.6.34.1robin9200v1.0
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    1811796 Bytes = 1.7 MiB
>    Load Address: 20008000
>    Entry Point:  20008000
>    Verifying Checksum ... OK
>    Loading Kernel Image ... OK
> OK
> 
> Starting kernel ...
> 
> Uncompressing Linux... done, booting the kernel.
> ---
> 
> Here is stalls. With my jtag probe I can locate the problem.
> 
> ---
>> halt
> target state: halted
> target halted in ARM state due to debug-request, current mode: Supervisor
> cpsr: 0x600000d3 pc: 0xc000af3c
> MMU: enabled, D-Cache: enabled, I-Cache: enabled
>>   arm disassemble 0xc000af3c
> 0xc000af3c	0xeafffffe	B 0xc000af3c
> ---
> 
> This just loops at that address. Why does it that?
> You see that the mmu is enabled and the cpu has remapped the memory.
> Does someone have a clue what goes wrong?
> 
> Here is the .config and board file.
> http://www.on8rth.be/wp-content/uploads/2010/09/dotconfig.txt
> http://www.on8rth.be/wp-content/uploads/2010/09/board-robin9200.c
> 
> Thank you
> 
> Robin Theunis
> ON8RTH
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/


-- 
Sincerely yours,
Mike.

ARM target not boot after remap memory

[Russell King - ARM Linux]

On Mon, Sep 13, 2010 at 02:07:51PM +0200, Mike Rapoport wrote:
> (add LAKLM to CC)

>> The problem is now when linux kernel is booting, nothing happens.
>>
>> ---
>> U-Boot> bootm
>> ## Booting kernel from Legacy Image at 21000000 ...
>>    Image Name:   Linux-2.6.34.1robin9200v1.0
>>    Image Type:   ARM Linux Kernel Image (uncompressed)
>>    Data Size:    1811796 Bytes = 1.7 MiB
>>    Load Address: 20008000
>>    Entry Point:  20008000
>>    Verifying Checksum ... OK
>>    Loading Kernel Image ... OK
>> OK
>>
>> Starting kernel ...
>>
>> Uncompressing Linux... done, booting the kernel.
>> ---
>>
>> Here is stalls. With my jtag probe I can locate the problem.
>>
>> ---
>>> halt
>> target state: halted
>> target halted in ARM state due to debug-request, current mode: Supervisor
>> cpsr: 0x600000d3 pc: 0xc000af3c
>> MMU: enabled, D-Cache: enabled, I-Cache: enabled
>>>   arm disassemble 0xc000af3c
>> 0xc000af3c	0xeafffffe	B 0xc000af3c

Probably __error.  Either your machine isn't supported, or the kernel
doesn't recognise your processor.

Is your version of uboot sufficiently recent that it passes the correct
machine ID in r1 ?

ARM target not boot after remap memory

[Russell King - ARM Linux]

BTW, Please do not drop CCs.

On Mon, Sep 13, 2010 at 02:48:18PM +0200, Robin Theunis wrote:
> Hi Russell,
> 
> Yes I have tested it. I made a breakpoint at 0x2008000 and viewed that
> the r1 register and there in I found the correct ID.
> 
> Robin
> 
> 2010/9/13 Russell King - ARM Linux <linux@arm.linux.org.uk>:
> > On Mon, Sep 13, 2010 at 02:07:51PM +0200, Mike Rapoport wrote:
> >> (add LAKLM to CC)
> >
> >>> The problem is now when linux kernel is booting, nothing happens.
> >>>
> >>> ---
> >>> U-Boot> bootm
> >>> ## Booting kernel from Legacy Image at 21000000 ...
> >>> ? ?Image Name: ? Linux-2.6.34.1robin9200v1.0
> >>> ? ?Image Type: ? ARM Linux Kernel Image (uncompressed)
> >>> ? ?Data Size: ? ?1811796 Bytes = 1.7 MiB
> >>> ? ?Load Address: 20008000
> >>> ? ?Entry Point: ?20008000
> >>> ? ?Verifying Checksum ... OK
> >>> ? ?Loading Kernel Image ... OK
> >>> OK
> >>>
> >>> Starting kernel ...
> >>>
> >>> Uncompressing Linux... done, booting the kernel.
> >>> ---
> >>>
> >>> Here is stalls. With my jtag probe I can locate the problem.
> >>>
> >>> ---
> >>>> halt
> >>> target state: halted
> >>> target halted in ARM state due to debug-request, current mode: Supervisor
> >>> cpsr: 0x600000d3 pc: 0xc000af3c
> >>> MMU: enabled, D-Cache: enabled, I-Cache: enabled
> >>>> ? arm disassemble 0xc000af3c
> >>> 0xc000af3c ? 0xeafffffe ? ? ?B 0xc000af3c
> >
> > Probably __error. ?Either your machine isn't supported, or the kernel
> > doesn't recognise your processor.
> >
> > Is your version of uboot sufficiently recent that it passes the correct
> > machine ID in r1 ?
> >