Hi Marco, Marco Antônio Possamai wrote: > Thank you for your quick reply! > > Sorry for the missing information. The .dts I'm using is the > lite5200b.dts that comes along with the linux-2.6-denx kernel (got it at > git://git.denx.de/linux-2.6-denx.git). What other .dts should I try? I'm > using the mpc5200b board so it seems fitting that I'm working with > lite5200b.dts. > > There's a lite5200.dts source tree that also comes along with the > kernel. I've tried with it and got the same results.
1) Please don't top post. 2) Please CC: the u-boot list. By replying directly to me, you excluded all the people with real knowledge. The .dts has to match to board: it is the description of the hardware. If I understand your message, your board *is* the standard mpc5200b board (note that I have no idea what a mpc5200b board is, see point #2), in which case the standard .dts should work. What debug capability do you have? Can you dump the linux log buffer (from memory) after a failed boot? <http://www.denx.de/wiki/view/DULG/LinuxPostMortemAnalysis> I'm out of easy answers. Good luck, gvb > ----- Original Message ----- > From: "Jerry Van Baren" > To: "Marco Antônio Possamai" > Cc: "U-Boot" > Subject: Re: [U-Boot] Linux hangs when uncompressing kernel image: > linux-2.6.26 > Date: Thu, 16 Apr 2009 23:37:45 -0400 > > > Marco Antônio Possamai wrote: > > Hello > > > > I've been working on building a 2.6.26 linux kernel to the > mpc5200Lite > > PowerPc board. However, I am unable to boot the system using the > > generated image. > > > > I am using what seems to be the latest U-Boot for the job. Got it > from > > www.denx.de/git/u-boot.git. > > Good. :-) > > > I'm using the device tree compiler dtc-v1.2.0 to compile the > device tree > > source into a device tree blob. Got it at: > > http://jdl.com/software/dtc-latest.tgz > > Good, but *what* did you compile? > > If this were /., I would insert an automobile analogy about you > telling us all about the wrenches you used, how they were the best > Binford-2000 lifetime guaranteed wrenches with more power, but > never told us what part you were adjusting with the wrenches. > > > > For the device, my design procedure is the following: > > > > 1. In the first step I generate the uImage file ('make ARCH=powerpc > > zImage'), the corresponding lite5200b.dts and compile it to > > lite5200b.dtb. > > 2. Afterwards, I do the U-Boot configs. I define 0x00600000 as > the device > > tree address and 0x00200000 as the uImage's. > > 3. Finally, I transfer them all (using tftp for each, of course) > and try > > to boot: 'bootm 0x00200000 - 0x00600000' > > > > The result is that the console hangs... > > Is linux hung or is there no serial output? From the outside, the > two symptoms are indistinguishable. If linux is actually running, > it means your console/serial configuration in your dtb is not > right. Use your debugger to halt the processor and see what/where > it is executing. Dump the linux log buffer and see if there is > anything interesting in there that wanted to go out the serial > channel but couldn't. > > > Does anyone have any idea of why it happens? I checked a similar > problem > > at the > > > http://www.denx.de/wiki/view/DULG/LinuxHangsAfterUncompressingKernel, > and > > I'm almost convinced that it is probably a bd_info problem, > concerning > > the definitions of the kernel's IMAP_ADDR and the CFG_IMMR of > U-Boot to > > be unmatching. > > The flattened device tree replaces the bd_info structure as the way > to communicate configuration info from u-boot to linux. > > > If that is the case, how/where can I correct it? Which files should I > > look for? > > What are you using for your device tree source (.dts)? Odds are > pretty good that is the problem. If that is OK, second best is if > your console simply isn't configured properly. If neither of those > are the case, you have some serious debugging ahead. > > > Thanks for the attention. > > > > Marco Antônio Possamai > > > > Universidade Federal de Santa Catarina > > Good luck, > gvb > > > > Marco Antônio Possamai > > Universidade Federal de Santa Catarina > > > -- > It's News. It's Reviews. It's Interviews. It's Free. What Are You > Waiting For? > www.movieline.com <http://www.movieline.com >! _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
