On Tue, 2010-04-20 at 10:36 +0200, Quadros Roger (Nokia-D/Helsinki) wrote: > ext Tony Lindgren wrote: > > * Roger Quadros <roger.quadros@xxxxxxxxx> [100419 05:06]: > >> Balbi Felipe (Nokia-D/Helsinki) wrote: > >>> Hi, > >>> > >>> On Mon, Apr 19, 2010 at 01:49:15PM +0200, ext Arnaud Ebalard wrote: > >>>> Nokia N900 is shipped to users with a 2.6.28 omap kernel. Many patches > >>>> for the hardware and various features have been pushed upstream by Nokia > >>>> developers and possibly others. Those are now available in current l-o > >>>> tree. > >>>> > >>>> Nonetheless, many drivers and various features are still missing > >>>> upstream. Simply put, one cannot expect to run a current l-o kernel on > >>>> the device (and expect to get a GUI and/or make call with the device). > >>> tell me about it :-p > >>> > >>> Thing is that it doesn't really depend only on Nokia to get those > >>> parts done. Well, we can get the kernel part done by just cleaning > >>> up and porting the 2.6.28 drivers to current mainline, but in case > >>> of e.g. SGX we still miss the xorg driver and I don't think > >>> that'll be released any time soon. > >>> > >>> Another problem is that the bootloader believes it can pass all > >>> the obsoleted OMAP TAGs to kernel and the 2.6.28 kernel depends on > >>> those, maybe that can be worked around. I don't know whether > >>> kernel simply drops invalid TAGs or not... > >> Yes kernel simply drops unrecognized TAGs and just prints a warning message. > > > > All the the custom tags should be replaced with platform_data. > > > > If something is needed for revision detection of the board, > > there is arm-linux common ATAG_REVISION. > > > > However, also Maemo userspace depends on some things set by the > > custom tags. As this is non-standard, we should not spend much > > effort on that. Instead we should concentrate on making N900 > > work with any distro the standard Linux way. > > > > So I recommend using kexec patched Maemo kernel, then boot the > > new mainline kernel from Maemo kernel and mount root directly > > on the eMMC. > > FYI. kexec-tools will be available in maemo.org repo soon and you can also > expect kexec patched kernel to be available. Everything related to kexec (kernel patches and user-space) on n900 is documented here: http://wiki.meego.com/ARM/Meego_kexec_install_on_N900 kexec-tools is already available from maemo-extras (testing) repository. Cheers, Ameya. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
