2011/10/13 Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>: > On Thu, Oct 13, 2011 at 10:49:30AM +0200, Samuel Stirtzel wrote: >> Hi, >> currently I try to get a Pandaboard to boot out of Barebox, so far I >> got Barebox up and running. >> >> >> For testing purpose I'd like to boot from a SD card, optimal would be >> if I could set up the card like the description in the Omappedia >> tutorial [1]. >> Is there a tutorial how to set up barebox to boot from SD cards? >> >> >> What I already tried: >> >> In the configuration file from arch/arm/boards/panda/env is the >> description for a network boot configuration, >> I used this file to start out and wanted to boot from the barebox prompt. >> >> Barebox is build from my toolchain and i copy the MLO file, the >> barebox.bin and the bareboxenv file to the boot partition of the card. >> For convenience I currently use a precompiled MLO that has been made >> for u-boot thus I just renamed the barebox.bin file to u-boot.bin. >> >> On startup the following messages were displayed: >> - >> Texas Instruments X-Loader 1.5.1 (Sep 6 2011 - 13:37:48) >> Reading boot sector >> Loading u-boot.bin from mmc >> >> >> barebox 2011.10.0 (Oct 13 2011 - 09:45:17) >> >> Board: Texas Instrument's Panda >> PandaBoard Revision: 003 >> ehci@ehci0: USB EHCI 1.00 >> Malloc space: 0x8d000000 -> 0x8f000000 (size 32 MB) >> Stack space : 0x8cff8000 -> 0x8d000000 (size 32 kB) >> running /env/bin/init... >> not found >> - >> For me it looks like i forgot to copy a file or something, any advice? > > I just compiled the current master branch with panda_defconfig and this > does not happen on my board. Instead I get a null pointer exception in > the mmc driver. I just sent out a patch which fixes this. Like Fabian hinted, i used the version with the 2011.10.0 tag and applied the unaligned access patch. > > Have you changed your config? Only the boot arguments have been changed, I used the tool bareboxenv, something like: ./scripts/bareboxenv ./arch/arm/boards/panda/env/ ~/barebox-test/myenv-panda and copied it as bareboxenv to the SD card. This step was shown in a tutorial (can't find the link right now), should I use the defaultenv instead? If I would use the defaultenv, can I do it like: scripts/bareboxenv ./defaultenv/ ~/barebox-test/myenv-panda Or is there another way to do it? > >> >> >> Although booting the uImage with bootm looks ok it won't work, the >> following message was displayed: >> - >> Verifying Checksum ... OK >> Image Name: Angstrom/2.6.35.7/omap4430-panda >> Image Type: ARM Linux Kernel Image (uncompressed) >> Data Size: 3688408 Bytes = 3.5 MB >> Load Address: 80008000 >> Entry Point: 80008000 >> OK >> >> Starting kernel ... >> >> commandline: <NULL> >> arch_number: 2791 >> Uncompressing Linux... done, booting the kernel. > > Does not work for me aswell, although with a current v3.1-rc9 kernel. > Here's what I get with earlyprintk: > > Uncompressing Linux... done, booting the kernel. > [ 0.463745] GPMC revision 6.0 > [ 59.033691] INFO: rcu_sched_state detected stall on CPU 0 (t=7680 jiffies) > > After this no more messages. > > Haven't investigated further so far, but maybe the kernel expects some GPMC > registers to be set correctly. I disabled GPMC in the kernel, with u-boot it worked* on my 2.6.35 Linux (plus some TI patches). * Not totally since I got framebuffer problems, but that is another problem and not the fault of the bootloader. > > Sascha > > -- > Pengutronix e.K. | | > Industrial Linux Solutions | http://www.pengutronix.de/ | > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | > -- Regards Samuel _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
