arm January 2010

arm@lists.fedoraproject.org

12 participants
8 discussions

Fedora ARM 12 on IGEPv2 (Beagle Board clone)
by Matthew Wilson 01 Jan '16

01 Jan '16

Hi all, I would like to introduce myself to the group. I have recently received an IGEPv2 board [1], which is based on the Beagle Board, but with wifi, bluetooth, ethernet, and more RAM. I'm still at the "wow, it's tiny and it runs Linux" stage. I should get a bit more time over the next month and Christmas to play around properly with it. I'm new to embedded development, but neither new to Linux nor ARM (writing my first ARM assembly some 15 years ago). However, for the past 6 years I've not even built a Linux kernel, preferring to use the default kernel in Fedora for simplicity :) Firstly, a thank you to those involved in Fedora ARM for getting it to this stage. If I get the time, I'd really like to contribute some (probably small) effort to help get Fedora ARM working well on the IGEPv2 and Beagle Board. As I progress, I'd like to know what I can do to help. In the meantime, I have some questions. Apologies in advance if these seem simple. 1) There are various different kernels from different sources. I'm used to there being a small set of "right" kernels (that is, Fedora's idea of "right") for x86. I fully appreciate that different ARM-based boards are quite different in capabilities (like different instruction set variants). a) Is there likely to be some standardised vanilla Fedora ARM kernel source? (Or is that simply the source RPM available for Fedora?) Then patches /could/ be offered for the more common systems (e.g. Beagle Board & clones, SheevaPlug). b) Would it then make sense to offer these as pre-built RPMs for common systems? c) Is there any guidance on which version is good to use as a base? I've seen quite different kernel versions being used (from 2.6.27 to 2.6.31). 2) I understand a little bit about the different calling conventions, FP differences (e.g. soft FPU versus VFP), and instruction set differences (v5 versus v7). a) Can the kernel can be safely built with a different instruction set targeted? (I know there are different optimisation options passed to GCC. Apologies if this seems a bit newbie-ish.) b) For FP-heavy programs (e.g. ogg encoding), is it possible to build the packages with VFP/NEON but still get them to work in a soft FPU system? I'd imagine any call to an external library would have to somehow be defined to use a different calling standard. 3) There seem to be some missing dependencies in the packages in the current Fedora ARM repository. For example, emacs is requiring libotf, which doesn't seem to be there in the repository. And likewise with the xorg-x11-font* packages needing ttmkdir. I'm confused as to how the RPM could have been successfully built without it. What am I missing? 4) I see there has been some discussion over unaligned data access. (Oh, I remember that from the ARM2 days.) It seems as if the Cortex-A8 cores allow unaligned data access when set up to do so [2]. Does this, in any way, help with the compatibility of packages targetting Cortex-A8? 5) I've managed to get various source packages missing from the Fedora ARM repositories to compile successfully (natively). I guess there is a reason why there are not in the repos right now -- is that reason down to time and priorities, or is there some blocking bugs with many of these packages? I look forward to being able to contribute something back into Fedora! Kind regards, Matthew [1] http://www.igep-platform.com/index.php?option=com_content&view=article&id=4… [2] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0344j/Beihgi…

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Fedora on n800
by ryan desfosses 27 Jan '10

27 Jan '10

Hello, Are there any instruction on how to download Fedora on a nokia n800? Thanks, Ryan

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Noob questions.
by Satyaprakash Buddhavarapu 26 Jan '10

26 Jan '10

Hi, So I found this page searching for some stack which has Java running on linux running on a ARM11 processor(Samsung s3c6410) to be exact. I am linux NOOB too. From what I read I understand that I have to build the kernel again for my target board. Is this also true for each of the binaries on the rootfs or from the yum repository? thx- Satya.

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Re: [fedora-arm] Noob questions.
by Andy Green 26 Jan '10

26 Jan '10

On 01/26/10 11:43, Somebody in the thread at some point said: > Hi Andy, > > Thanks for sharing the info. > > More questions - > > For development, I am planning to use QEMt U to load a kernel image[so > it would be great if you have a prebuilt kernel image for s3c6410 to > share :) ] and use the rootfs to derisk stuff until I get my hands on a > proper dev board. > > Is this a step in the right direction? I don't use Qemu because I have SMDK6410, it's preferable to use a real board all the time. I can't give prebuilt binaries when I am not set up to also provide source for GPL reasons. However, if you go here http://fedoraproject.org/wiki/Architectures/ARM/CrossToolchain and install the cross toolchain on your Fedora host, then git clone git://git.warmcat.com/qi and check out the txtr branch you should be able to build Qi, if you look in ./image/qi-s3c6410....bin and examine 6410-partition-sd.sh you will see how to make a bootable SD Card. For the kernel, I used Ben Dooks' tree git clone git://git.fluff.org/bjdooks/linux.git there's a slightly outdated config for smdk6410 in arch/arm/configs. In both cases, you can use the Fedora ARM Cross toolchain to build them. -Andy

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Dear Fedora-Arm, If you can't find in google, try JUSTDIAL.COM
by Rupak 11 Jan '10

11 Jan '10

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Re: [fedora-arm] Sheevaplug and F12
by Prafulla Wadaskar 04 Jan '10

04 Jan '10

> -----Original Message----- > From: Amey Inamdar > Sent: Monday, January 04, 2010 10:26 AM > To: Prafulla Wadaskar; Piyush Shah > Subject: FW: [fedora-arm] Sheevaplug and F12 > > FYI, if you've not seen. > > Amey > > > -----Original Message----- > > From: fedora-arm-bounces(a)redhat.com > > [mailto:fedora-arm-bounces@redhat.com] On Behalf Of Quentin Armitage > > Sent: Sunday, January 03, 2010 6:20 AM > > To: fedora-arm(a)redhat.com > > Subject: Re: [fedora-arm] Sheevaplug and F12 > > > > On Sat, 2010-01-02 at 11:08 +0000, Graeme Hilton wrote: > > > Hi, > > > > > > I've got a Sheevaplug and I'm using a 4GB SD card to hold the OS. > > > > > > PS My environment and uBoot version are attached below. > > > > > > Marvell>> printenv > > > baudrate=115200 > > > loads_echo=0 > > > ipaddr=10.4.50.165 > > > serverip=10.4.50.5 > > > rootpath=/mnt/ARM_FS/ > > > netmask=255.255.255.0 > > > console=a0000 > > > e=ttyS0,115200 > > mtdparts=nand_mtd:0xc0000@0(uboot)ro,0x1ff00000@0x100000(root) > > > CASset=min > > > MALLOC_len=1 > > > > > > > > U-Boot 1.1.4 (Sep 14 2009 - 15:36:37) Marvell version: 3.4.19 > > > Marvell>> > > > > > > > There is a bug in Sheevaplug uboot 3.4.19 which corrupts the > > environment > > (see console=a0000 and following line above). > > > > This is now fixed in 3.4.27, but two further issues have been > > found, and > > pingtoo has produced fixes -see > > http://plugcomputer.org/plugforum/index.php?topic=1134.31 . > It appears > > that the best uboot is 3.4.27 as patched by pingtoo, Dear Quentin Armitage Can you please try latest mainlined u-boot for this problem? Ref: http://www.plugcomputer.org/plugwiki/index.php/Das_U-boot_plug_support Regards.. Prafulla . . > > http://plugcomputer.org/plugforum/index.php?action=dlattach;to > pic=1134.0;attach=201 . > > > > Beware though, and it applies not only to 3.4.27, but also > 3.4.19 and > > 3.4.16 and probably earlier, that it appears there is a bug > > in the SDHC > > handling, and that uboot will not be able to handle offsets > > greater than > > 4Gb on the card; you should be safe with your 4Gb card of course. > > > > Regards, > > Quentin Armitage > > > > _______________________________________________ > > fedora-arm mailing list > > fedora-arm(a)redhat.com > > https://www.redhat.com/mailman/listinfo/fedora-arm > >

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Sheevaplug and F12
by Graeme Hilton 02 Jan '10

02 Jan '10

Hi, I've got a Sheevaplug and I'm using a 4GB SD card to hold the OS. I followed the instructions at http://plugcomputer.org/plugforum/index.php?topic=1041.0 but my boot sequence halts with the lines: rtc-mv rtc-mv: setting system clock to 2009-12-31 19:12:06 UTC (1262286726) Waiting 10sec before mounting root device... EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended VFS: Mounted root (ext2 filesystem) on device 179:1. Freeing init memory: 116K Warning: unable to open an initial console. I've googled that warning message but I'm not finding anything that makes any sense to me. Can anyone shed any light on what my problem is and where I can start debugging? Thanks, Graeme Hilton PS My environment and uBoot version are attached below. Marvell>> printenv baudrate=115200 loads_echo=0 ipaddr=10.4.50.165 serverip=10.4.50.5 rootpath=/mnt/ARM_FS/ netmask=255.255.255.0 console=a0000 e=ttyS0,115200 mtdparts=nand_mtd:0xc0000@0(uboot)ro,0x1ff00000@0x100000(root) CASset=min MALLOC_len=1 ethprime=egiga0 bootargs_end=:::DB88FXX81:eth0:none image_name=uImage standalone=fsload 0x2000000 $(image_name);setenv bootargs $(console) root=/dev/mtdblock0 rw ip=$(ipaddr):$(serverip)$(bootargs_end) $(mvPhoneConfig); bootm 0x2000000; ethmtu=1500 mvPhoneConfig=mv_phone_config=dev0:fxs,dev1:fxs mvNetConfig=mv_net_config=(00:11:88:0f:62:81,0:1:2:3),mtu=1500 usb0Mode=host yuk_ethaddr=00:00:00:EE:51:81 nandEcc=1bit netretry=no rcvrip=169.254.100.100 loadaddr=0x02000000 autoload=no ethact=egiga0 mtdpartitions=mtdparts=orion_nand:0x400000@0x100000(uImage),0x1fb00000@0x500000(rootfs) ethaddr=00:62:81:a0:00:00 real_bootcmd=setenv bootargs $(bootargs_console) $(mtdpartitions) $(bootargs_root); nand read.e 0x00800000 0x00100000 0x00400000; bootm 0x00800000 recover1=setenv mainlineLinux yes; setenv arcNumber 2097; setenv bootcmd run recover2; saveenv; reset recover2=run recover3; setenv bootcmd $(real_bootcmd); saveenv; setenv bootargs $(bootargs_console) $(mtdpartitions); bootm 0x00800000 0x01100000 recover3=run recover4; nand erase clean 0x00100000 0x00400000; nand write.e 0x00800000 0x00100000 0x00400000 recover4=usb start; fatload usb 0 0x00800000 uImage; fatload usb 0 0x01100000 initrd arcNumber=2097 filesize=1CAE6D bootargs_nand=console=ttyS0,11200 rw root=/dev/mtdblock2 rootfstype=jffs2 bootcmd_nand=setenv bootargs $(bootargs_nand); nand read.e 0x800000 0x100000 0x400000; bootm 0x800000 bootargs_sd=console=ttyS0,115200 ro root=/dev/mmcblkp01 rootdelay=1 bootcmd_sd=setenv bootargs $(bootards_sd); mmcinit; ext2load mmc 0 0x800000 /boot/uImage-2.6.30-sheevaplug; bootm 0x800000 bootargs_console=console=ttyS0,115200 bootargs_root=rw root=/dev/mmcblk0p1 rootdelay=10 rootfstype=ext2 bootcmd=setenv bootargs $(bootargs_console) $(bootargs_root); run bootcmd_mmc; bootm 0x0800000 bootargs=console=ttyS0,115200 rw root=/dev/mmcblk0p1 rootdelay=10 rootfstype=ext2 bootcmd_mmc=mmcinit; ext2load mmc 0 0x800000 /boot/uImage-2.6.30-sheevaplug stdin=serial stdout=serial stderr=serial nandEnvBase=a0000 mainlineLinux=yes enaMonExt=no enaCpuStream=no enaWrAllo=no pexMode=RC disL2Cache=no setL2CacheWT=yes disL2Prefetch=yes enaICPref=yes enaDCPref=yes sata_dma_mode=yes netbsd_en=no vxworks_en=no bootdelay=3 disaMvPnp=no enaAutoRecovery=yes pcieTune=no Environment size: 2492/131068 bytes Marvell>> version U-Boot 1.1.4 (Sep 14 2009 - 15:36:37) Marvell version: 3.4.19 Marvell>>

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Fedora 12 on Nokia N900
by jeff 01 Jan '10

01 Jan '10

I have Fedora 12 up and running on my Nokia N900. Status: no phone, no battery charging, but wifi works and I'm about to get X going, methinks. I wrote up a mini HOWTO here: http://wiki.maemo.org/User:Jebba/Fedora Have fun, -Jeff

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arm January 2010