Re: Ebony/440GP boot problems
From: Chris Zimman <hidden>
Date: 2003-02-01 19:31:05
On Sat, Feb 01, 2003 at 11:10:28AM -0800, brian.auld@adic.com wrote:
As shown below, after reset, if I enter the 'ti' command, we start single
stepping from 0xfffff000. Each time I 'ti', the PC gets incremented by a 32
bit word. It would then appear that code is not running and I start frozen
at 0xfffff000. Can anyone make sense of this?
==========================================
BDI>reset
- TARGET: processing user reset request
- TARGET: reseting target passed
- TARGET: processing target startup ....
- TARGET: processing target startup passed
BDI>
BDI>
BDI>
BDI>
BDI>
BDI>ti
Target state : debug mode
Debug entry cause : single step
Current PC : 0xfffff000
Current CR : 0xab355bb5
Current MSR : 0x00000000
Current LR : 0x840208d5
BDI>ti
Target state : debug mode
Debug entry cause : single step
Current PC : 0xfffff004
Current CR : 0xab355bb5
Current MSR : 0x00000000
Current LR : 0x840208d5
BDI>ti
Target state : debug mode
Debug entry cause : single step
Current PC : 0xfffff008
Current CR : 0xab355bb5
Current MSR : 0x00000000
Current LR : 0x840208d5
BDI>ti
Target state : debug mode
Debug entry cause : single step
Current PC : 0xfffff00c
Current CR : 0xab355bb5
Current MSR : 0x00000000
Current LR : 0x840208d5
BDI>ti
Target state : debug mode
Debug entry cause : single step
Current PC : 0xfffff010
Current CR : 0xab355bb5
Current MSR : 0x00000000
Current LR : 0x840208d5
BDI>
===========================================0xfffff000 is the start of ppc/u-boot. Break out a copy of GDB and start tracing into it to find out where it's blowing up. Build ppc/u-boot with "-fno-schedule-insns -fno-schedule-insns2" added to the compile line. --Chris ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/