On Tue, 12 Sep 2006 17:33:16 +0200 Fredrik Roubert <roubert at df.lth.se> wrote:
> Hi! > > I have a custom board on which I currently run Linux 2.6.18-rc6 > configured for MPC834x_SYS in the /ppc/ tree, which just a few minor > changes. Now I'm interested to move to using the /powerpc/ source tree > instead, but I can't figure out exactly what steps are necessary to do > this. > > Does anyone run a MPC834x_SYS built with ARCH=powerpc? > yes > I boot the board with U-Boot (version 1.1.4, customized), and I assume > that I need to add some stuff for this new device tree thing, but I > can't figure out exactly what the kernel will expect. the kernel expects a pointer to a device tree instead of a bd_t. The 8349EMDS device tree source is now in linux/arch/powerpc/boot/dts. You'll need the device tree compiler (dtc) from jdl.com to build your flat device tree binary (dtb; what the kernel expects). > > Does anyone have some pointers on how to do this? > Matt's u-boot patches address the issue well for 85xx, they are straightforward to adapt to 83xx: http://sourceforge.net/mailarchive/forum.php?thread_id=15518792&forum_id=12898 they allow you to tftp the dtb into mem, and "bootm ${loadaddr} - ${oftaddr}" to start an ARCH=powerpc kernel. > Cheers // Fredrik Roubert Kim
