David,
Thanks for the response. I searched a little more and found that many
people recommend looking through __log_buf to see if info is getting
printed to memory. Below I've added the printouts I get both before and
after the system hangs. Also, I'm not using Uartlite. I'm using 16550;
however, I have created the same design with Uartlite and adjusted the
console parameter to reflect that change. In both instances the kernel
hangs. You're right too, this is common...I just need to figure out how
to read out this __log_buf address:
If I stop the processor after it hangs:
XMD% mrd 0xc0259fa4 10
C0259FA4: 3C353E5B
C0259FA8: 20202020
C0259FAC: 302E3030
C0259FB0: 30303030
C0259FB4: 5D204C69
C0259FB8: 6E757820
C0259FBC: 76657273
C0259FC0: 696F6E20
C0259FC4: 322E362E
C0259FC8: 32352D72
If I stop it before it hangs:
XMD% mrd 0xc0259fa4 10
C0259FA4: 00000000
C0259FA8: 00000000
C0259FAC: 00000000
C0259FB0: 00000000
C0259FB4: 00000000
C0259FB8: 00000000
C0259FBC: 00000000
C0259FC0: 00000000
C0259FC4: 00000000
C0259FC8: 00000000
according to my system.map file __log_buf is located at C0259FA4
If I cut off the 0xc0000000:
XMD% mrd 0x259fa4 10
259FA4: FFFFFFFF
259FA8: FFFFFFFF
259FAC: FFFFFFFF
259FB0: FFFFFFFF
259FB4: FFFFFFFF
259FB8: FFFFFFFF
259FBC: FFFFFFFF
259FC0: FFFFFFFF
259FC4: FFFFFFFF
259FC8: FFFFFFFF
Any insight as to how to figure out what these values mean using XMD
would be great. Or if you guys have any other recommendations for using
the JTAG (not with XMD) I would greatly appreciated!
thanks,
Lorenzo
David Baird wrote:
On Thu, Jul 3, 2008 at 7:05 PM, Lorenzo T. Flores <[EMAIL PROTECTED]> wrote:
I'm trying to compile the Xilinx patched kernel tree (v2.6.25-rc9) and run
it on an ML405
So far, I get to the following point in the boot sequence:
loaded at: 00400000 005AF5A0
board data at: 005AD524 005AD5A0
relocated to: 00405058 004050D4
zimage at: 00405E90 0051D6CC
initrd at: 0051E000 005ACC0D
avail ram: 005B0000 80000000
Linux/PPC load: console=ttyS0,9600 ip=on root=/dev/ram rw
Uncompressing Linux...done.
Now booting the kernel
The system hangs after it says "Now booting the kernel."
This seems to come up a lot, so I'm surprised you didn't find it in
the archives ;-)
Are you using uartlite? You'll need to change the "console" option if you are.
-David
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