Re: undefined instruction

["mohammed shareef" <mdshareef@gmail.com>]

Dear Steve,

i split the file into two pieces:

split rootfs-jffs2.img --bytes=12m

so i have two files with xaa(12Mb) and xab(11.5Mb)

i was ablt to transfer the first file completely with any problem.
 but i dont know what to do next. should i transfer the first image in
RAM to flash? could you please tell me how many sectors i need erase
and from which bank? i am afraid that i may end up erasing the u-boot.
thank you.
regards,
Shareef

On Thu, Jun 26, 2008 at 9:41 PM, Steve Poulsen <spoulsen@css-design.us> wrote:
> Mohammed,
>
> When you tftp the file to memory, you need to make sure the filesize fits in
> the memory available.  Since you have experimentally done that and now want
> to flash the pieces, I suggest you look at the "split" command under Linux.
>   You will need to split the file into pieces that fit into RAM and flash at
> the proper address.  If you split the file into two pieces, then you will
> need to flash the first piece at address X and the second piece at address X
> + 16meg.  You should make sure you split the file on a sector boundary.   If
> you don't want to think about this, then you should erase/unprotect the
> whole area you will need first, then transfer and flash the pieces. You may
> want to look at the omapfl utility.   With some modification, you could
> flash your image more easily via USB.
>
> Steve
>
> mohammed shareef wrote:
>>
>> Hi,
>>
>> I tried to do the same procedure with a small filesystem image <
>> 16Mb... it worked. i didnt have such problems. so could someone please
>> tell me how to divide the filesystem image in to two and flash it?
>> thank you,
>> regards,
>> shareef
>>
>> On Thu, Jun 26, 2008 at 4:36 PM, mohammed shareef <mdshareef@gmail.com>
>> wrote:
>>
>>>
>>> Hi,
>>>
>>> i did the below. i got an image. but i am still having the same problem
>>>
>>> my file size is 23Mb
>>>
>>> [root@localhost tftpboot]# mkfs.jffs2 --squash -r /data/rootfs2.6
>>> -e131072 > /data/rootfs-jffs2.img
>>> [root@localhost tftpboot]# cp /data/rootfs-jffs2.img
>>> /tftpboot/rootfs-jffs2.img
>>>
>>> \0x09 #################################################################
>>> \0x09 #############undefined instruction
>>> pc : [<e0000004>]    lr : [<00000002>]
>>> sp : 1103fca4  ip : 11095dd8  fp : 00000001
>>> r10: 10963410  r9 : 1103fd24  r8 : 1103ffdc
>>> r7 : 270a30a1  r6 : 8695632d  r5 : 08016ffa  r4 : 5aebcc39
>>> r3 : 00000032  r2 : 11095dd4  r1 : 000000a0  r0 : 00000000
>>> Flags: nZCv  IRQs off  FIQs off  Mode SVC_32
>>> Resetting CPU ...
>>>
>>> could you please tell me what i should do. thank you.
>>> regards,
>>> Shareef
>>>
>>>
>>>
>>> On Wed, Jun 25, 2008 at 9:52 PM, Hunter, Jon <jon-hunter@ti.com> wrote:
>>>
>>>>>
>>>>> then i changed the filename and the
>>>>> tftpboot transfer started. But on the mid-way it complains  "undefined
>>>>> instruction".
>>>>>
>>>>> could some one please tell me where the problem is? thank you.
>>>>>
>>>>
>>>> How big is the file that you are attempting to download over tftp?
>>>>
>>>> U-boot executes in the upper part of the RAM and so if your file is too
>>>> big, then there is a good chance you are overwriting u-boot which would
>>>> cause u-boot to crash eventually. U-boot does not protect against this. This
>>>> would be a potential cause of an undefined instruction exception.
>>>>
>>>> Jon
>>>>
>>>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>
>
>