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@xxxxxxxxx> 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@xxxxxx> 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
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