2.3 kernels

2.3 kernels

[Mike Coy]

I'm trying to get a 2.3 kernel working on an RPX-LITE board.  After a bunch
of guesswork, I got it to compile.  A good number of hte things I disabled
can probably be re-enabled now, but that isn't the problem.  It now
compiles OK, but when I download it to the board and run it, I get no
output whatsoever.

Has anyone successfully ran a 2.3 kernel on one of these boards?

Thanks,
Mike

btw, the steps I took to get it to compile (from a stock 2.3.99pre9 kernel
from kernel.org) are:

edit the Makefile
         set ARCH to ppc
         set CROSS-COMPILE to powerpc-linux-
         comment out all lines referring to macintosh.a (odd linking problems)

in hte menuconfig,
         select 8xx-processors
         select rpx-lite
         turn off mouse support (i had some odd problem with adbmouse...)
         turn off special partition support (some odd problem with mac
partition)
         turn off ide support
         turn off ppp support
         turn off support for all ethernet devices (but leave ethernet on
if you want)
         turn off qspan-pci
         turn off magic sysreq key
         turn off appletalk
         turn off scsi
         turn off framebuffers
         turn off nvram support
         turn off usb support
         turn off virtual terminal support.
         turn on xmon debugging (or it complains for lack of debugger?)

after the make fails,
         add a symlink
                 arch/ppc/mbxboot/vmlinux.lds -> ../vmlinux.lds
         and rebuild (just the make zImage part)


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: 2.3 kernels

[Wolfgang Denk]

Hi Mike,

in message <4.3.2.7.0.20000727145521.00ae8410@10.0.0.2> you wrote:
>
> I'm trying to get a 2.3 kernel working on an RPX-LITE board.  After a bunch
> of guesswork, I got it to compile.  A good number of hte things I disabled
> can probably be re-enabled now, but that isn't the problem.  It now
> compiles OK, but when I download it to the board and run it, I get no
> output whatsoever.

Do you have any indication  how  far  it  comes?  Do  you  have  kgdb
working, or a good BDM debugger (i. e. one with MMU support)?

> Has anyone successfully ran a 2.3 kernel on one of these boards?

It depends on what you mean with 2.3; it's just two days that I  have
2.4.0-test5  running  stable  on  TQM8xxL boards. This is the _first_
kernel after 2.3.18 that ever ran for me on a MPC8xx. And  even  this
is  only  when  you  fix cache problems in string.S (either by simply
replacing the file with the version from 2.2.13, or by applying Dan's
patch).

Sorry, I don't have any RPX boards here to test, but  I  have  tested
three  systems  (2  x 850 and a 860), two of them under > 24 h stress
tests (with things like compiling the linux kernel  on  the  target),
and I had not a single problem since.

In  case  you're  interested  -  I've  put  my  patches  against  the
2.4.0-test5  BitKeeper  sources on our FTP server (the "COMMON" patch
includes all I neded to change for TQM8xxL  support  to  the  current
kernel;  the "TQM" patch is probably of little interest since this is
just needed when you use the old TQ monitor instead of PPCBOOT):

ftp://ftp.denx.de/pub/LinuxPPC/usr/src/patches/COMMON-2.4.0-test5.patch.gz
ftp://ftp.denx.de/pub/LinuxPPC/usr/src/patches/TQM-2.4.0-test5.patch.gz

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Real programmers don't comment their code. It was hard to  write,  it
should be hard to understand.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/