In message <200101032042.MAA17739 at shell9.ba.best.com> you wrote: > > I have a custom 860T based board for which I have ppcboot 0.7, register ... > When I boot the kernel don't see anything on the console, I have the > boardinfo structure below.
Which board configuration did you chose when building the Linux kernel, and did you really make sure that machine specific header file (include/asm-ppc/????) includes the same definition of the Board Information structure as we use in PPCBoot, and that IMAP_ADDR uses the same value as your PPCBoot configuration in CFG_IMMR? > I guess simple question is how do I go about debugging this problem? ... > Only tools I have is ppc_8xx-gdb and the Macraigor wiggler to which I > can connect using rproxy. Is there a better tool that I should acquire > that will help me in debugging this? If you don't get any communication working at all you need a BDM debugger, and one that supports the MMU. AFAIK the software that comes with the wiggler does not. I know of two working solutions for MMU-capable BDM/JTAG debuggers: - The BDI2000 by Abatron is the commercial solution; it supports fast flash programming, provides a telnet interface and talks remote GDB protocol over the network, so it fits ideally in a Linux based development environment. For details see www.abatron.ch - The BDM4GDB project at SourceForge is the Open Source approach to the same problem. You can build a small adapter that attaches to the parallel port, and the rest is done in software as a GDB extension. You have the same debugging capabilities, but are restricted as you have to use a parallel port on a PC. Also, only few flash types are supported (but it's easy to add new ones). See the mailng list at bdm4gdb-users at lists.sourceforge.net. If you cannot build the (simple) PCB for the adapter yourself, we sell limited quantities at production cost (< $ 50). Feel free to contact me for a quote for the BDM4GDB adapter and/or the BDI2000. Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de Above all else -- sky. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
