Re: address maps in PSIM

["Kulpinski, Jay" <Jay dot Kulpinski at gd-ais dot com>]

On Tuesday 01 October 2002 04:05 pm, mwette@grover.jpl.nasa.gov wrote:
> Hello.  I am working powerpc-eabi with gcc-2.95.3, binutils-2.12.1,
> gdb-5.2, newlib-1.10.0 on SuSE 7.2.  I have been working successfully
> with "-e bug", the MOTBUG OEA environment.  I now want to progress
> to a custom environment, starting with the "com" device.  When I run
> a sample program I get the following error:
>
>   $ powerpc-eabi-run -f tree.kos5b load5
>   core_find_mapping() - access to unmaped address,
>       attach a default map to handle this
>       - addr=0xf0003005 nr_bytes=0x1 processor=0x40141008 cia=0x57c0
>
> The file tree.kos5b (with some cruft from trial-n-error) is ...
>
>   /#address-cells 2
>   /cpus/cpu@0
>   /openprom/options
>       ./oea-memory-size 0x400000
>   /memory@0/available 0 0x400000
>   /memory@0/reg 0 0x400000
>   /chosen
>   /packages
>   /iobus@0xf0000000
>   /iobus@0xf0000000/reg 0xf0000000 0x01000000
>   /iobus@0xf0000000/com@0xf0004000/reg 0xf0004000 8
>   /iobus@0xf0000000/com@0xf0004000 > 0 int /cpus/cpu@0x0
>
> My guess is that I need to add memory map for the iobus.
> If this is this right, how do I do it?
> If not, what do I need to do?
>
> Any help would be appreciated.
>
> Thanks,
> Matt


Look in the PSIM tests archive for example device trees:

      ftp://sources.redhat.com/pub/psim/psim-test-1998-11-20.tar.gz

The tree used for the com device test is:

/#address-cells 1
/cpus/cpu@0
/iobus@0xf0000000/com@0xf0004000/reg 0xf0004000 8
/iobus@0xf0000000/com@0xf0004000/input-file cat.c
/iobus@0xf0000000/com@0xf0004000/input-delay 100
/iobus@0xf0000000/com@0xf0004000 > 0 int /cpus/cpu@0x0

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