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| 02:34.37 | landley | 18 pages of small print... |
| 02:34.56 | landley | And this is just the _offer_ on the new place. |
| 02:36.21 | g1powermac | heh, that ain't much ;-) |
| 02:36.31 | g1powermac | love the mortgage papers. . . |
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| 11:55.14 | landley | 's early. |
| 11:55.29 | av500 | gm |
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| 13:00.04 | landley | And toybox has a head implementation! Woo! |
| 13:00.08 | landley | Having contributors is nice. :) |
| 13:00.20 | av500 | now add body, arms and legs |
| 13:00.26 | av500 | and make it walk |
| 13:00.39 | landley | The phrase is "lurch towards the village". |
| 13:00.47 | av500 | ah yes |
| 13:01.00 | landley | http://www.offworlddesigns.com/p-505-fools-i-will-destroy-you-ladies-cut-t-shirt.aspx |
| 13:01.51 | landley | Part of http://www.girlgeniusonline.com/comic.php of course. :) |
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| 13:46.14 | kay_ | hi wondering anyone know why i cannot ifconfig on my development board? |
| 13:47.21 | av500 | in soviet russia, devboard ifconfigs you |
| 13:48.14 | kay_ | ? |
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| 14:06.58 | T0mW | kay_: what development board is it? |
| 14:07.17 | kay_ | its a custom development by my school |
| 14:07.21 | kay_ | at91rm9200 |
| 14:07.45 | T0mW | kay_: what happens when you try to run ifconfig? |
| 14:07.55 | kay_ | nothing happen |
| 14:08.20 | T0mW | try this 'which ifconfig' and see what it says. |
| 14:10.06 | T0mW | you should see ifconfig in /sbin (ls /sbin/ifconfig) |
| 14:10.15 | kay_ | yup |
| 14:10.18 | kay_ | it show /sbin/ifconfig |
| 14:11.03 | T0mW | try entering '/sbin/ifconfig --version' and see if it actually does something. |
| 14:11.47 | kay_ | it say ifconfig: --version: error fetching interface information: Device not found |
| 14:12.27 | T0mW | odd response, is ifconfig symlinked to busybox? try 'ls -l /sbin/ifconfig' and see. |
| 14:13.02 | av500 | yes, busybox |
| 14:13.08 | av500 | gives that error |
| 14:13.15 | kay_ | it says lrwxrwxrwx 1 0 0 14 Jan 1 1970 /sbin/ifconfig -> ../bi n/busybox |
| 14:13.43 | av500 | --help works |
| 14:14.32 | kay_ | <PROTECTED> |
| 14:15.06 | kay_ | so any idea why i cannot ping my loopback interface 127.0.0.1? |
| 14:16.27 | T0mW | yeah, ok, that explains the odd response. Busybox does not exactly implement all the features of a utility it is replacing. For expample, you cannot use the 'C' option of the busybox tar utility. |
| 14:16.50 | kay_ | ?? |
| 14:17.18 | kay_ | any idea how i can config the interface so that i can do a ping to test my interface? |
| 14:17.49 | T0mW | kay_: but, I would expect that '/sbin/ifconfig eth0 192.168.20.1' would work. What does that give you ? |
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| 14:18.22 | kay_ | link is down |
| 14:18.30 | T0mW | ah |
| 14:18.42 | T0mW | kay_: check the cables. |
| 14:18.45 | kay_ | aafter i plug in a cable |
| 14:18.48 | kay_ | its show nothing |
| 14:18.51 | kay_ | i guess it work now |
| 14:18.53 | kay_ | let me try |
| 14:19.13 | T0mW | just enter '/sbin/ifconfig eth0' and it should show you the config on eth0. |
| 14:19.32 | kay_ | weird i still cannot ping 127.0.0.1 |
| 14:19.47 | av500 | and kernel has networking enabled? |
| 14:19.59 | kay_ | yup comfirm have |
| 14:20.11 | T0mW | just enter '/sbin/ifconfig eth0' and it should show you the config on eth0. |
| 14:20.57 | kay_ | when i type that |
| 14:21.06 | kay_ | it doesnt have the usual loopback interface |
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| 14:21.31 | T0mW | yeah, but, does it show the configuration for eth0? one thing at a time. |
| 14:21.42 | kay_ | yup it show something |
| 14:21.55 | kay_ | <PROTECTED> |
| 14:22.00 | T0mW | good |
| 14:22.26 | T0mW | be careful of the MAC (HWaddr), you just cannot choose any numbers there! |
| 14:22.32 | kay_ | ??? |
| 14:22.54 | T0mW | there are bits within the MAC address which have special meanings. |
| 14:23.05 | kay_ | is there anyway i can change that? |
| 14:24.18 | T0mW | probably, not sure if busybox implemented it though. Do this 'ifconfig eth0 192.168.1.1' to set the IP address, then 'ifconfig eth0' to see if that address shows up in the configuration. |
| 14:25.47 | kay_ | <PROTECTED> |
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| 14:26.17 | kay_ | oh wait silly me |
| 14:26.45 | kay_ | it show eth0: Link now 100-FullDuplex |
| 14:27.17 | kay_ | i have eth0 Link encap:Ethernet HWaddr 12:22:33:44:55:66 inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:24 Base addr |
| 14:28.04 | T0mW | good, now set the IP address to something that is on your network, ping the board from your computer. |
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| 14:29.13 | T0mW | kay_: I was using '/sbin/ifconfig' instead of 'ifconfig' as it makes sure that you will run that utility even if the PATH is not yet set. |
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| 14:30.05 | kay__ | ah cannot host unreachable |
| 14:30.31 | T0mW | kay_: what is the IP address of the computer and the IP address of the dev board? |
| 14:31.21 | kay__ | computer 192.168.44.141 board .143 |
| 14:32.14 | kay__ | ?? |
| 14:32.18 | kay__ | when i quit |
| 14:32.20 | T0mW | ok, I suspect that the HWaddr is wrong. |
| 14:32.36 | T0mW | That is a made-up number and I'm not sure that it is valid. |
| 14:32.37 | kay__ | any idea how i can change it? |
| 14:32.53 | kay__ | yea i think so too |
| 14:33.06 | T0mW | Generally, that should be in your bootrom. |
| 14:33.14 | kay__ | oh ya |
| 14:33.25 | T0mW | Or, it can be set in the kernel driver for the ethernet chip. |
| 14:33.28 | kay__ | i go check it up |
| 14:33.48 | T0mW | another place is that the EEPROM can contain the MAC address. |
| 14:33.58 | kay__ | under my uboot |
| 14:34.05 | T0mW | yes, uboot. |
| 14:34.05 | kay__ | ethaddr=12.22.33.44.55.66 |
| 14:34.22 | kay__ | but what do i change it to? |
| 14:34.23 | T0mW | what is the MAC of your computer ethernet? |
| 14:34.49 | T0mW | keep the first 5 digits and change the last digits to something else. |
| 14:35.22 | kay__ | ok can |
| 14:35.34 | T0mW | e.g. computer is 54:42:49:99:9F:91, so set your dev board to 54:42:49:99:9F:92 |
| 14:35.38 | kay__ | maybe that explain why my nfs doesnt work too |
| 14:36.25 | T0mW | that should work, a MAC is only valid on the local network and is unique to avoid the possibility of two computers having the same eithernet MAC address on the network. |
| 14:36.53 | T0mW | heh, you can use 54:42:49:99:9F:91, I won't mind. |
| 14:37.12 | kay__ | then why 11 22 55 66 77 doesnt work/ |
| 14:38.31 | kay__ | weird |
| 14:38.36 | T0mW | You'd have to pull the RFC on ethernet to find out. I don't recall, except there are values for the first set of digits which are for special purposes. An ethernet having those values (bits) set is ignored on the network. |
| 14:38.38 | kay__ | why i cannot overwrite ethaddr in uboot |
| 14:39.08 | T0mW | you should be able to, setenv , then saveenv |
| 14:39.34 | T0mW | I don't have my u-boot dev board running right now, working on something else. |
| 14:40.02 | T0mW | do 'printenv' to see what varialbe name is for the MAC. |
| 14:40.13 | kay__ | ethaddr=12.22.33.44.55.66 |
| 14:40.17 | kay__ | weird i cant overwrite it |
| 14:40.21 | kay__ | other variable i can |
| 14:40.28 | T0mW | setenv ethaddr 54:42:49:99:9F:91 |
| 14:40.33 | T0mW | i think |
| 14:40.52 | T0mW | then printenv ethaddr to verify, then saveenv to record it. |
| 14:41.43 | kay__ | cant overwrite |
| 14:41.45 | kay__ | weirdd |
| 14:41.48 | T0mW | once you boot, ifconfig eth0 to verify that it has changed. |
| 14:43.44 | kay__ | i think i need to reflash uboot is it? |
| 14:43.50 | kay__ | i cant seems to change my mac address |
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| 14:46.14 | T0mW | kay__: well, I'm not totally sure that the MAC is the problem here. Do you have someone else who is also using this board that you can ask if their ethernet is working with that MAC address? |
| 14:46.37 | kay__ | i may have to ask tmr in school |
| 14:46.43 | kay__ | anyway thanks alot |
| 14:46.48 | kay__ | appreciate your help |
| 14:47.22 | T0mW | in the meantime, boot the board, set the IP address using ifconfig, then try to ping that address from the board (have it ping its own ethernet). |
| 14:47.34 | kay__ | it hang there |
| 14:47.54 | T0mW | that will tell you if you have a problem with your network layer of the kernel etc. |
| 14:48.38 | T0mW | you should be able to ping yourself, regardless of any electrical problems with the cat-5 cabling. |
| 14:49.07 | kay__ | when i ping myself |
| 14:49.10 | kay__ | it just hang there |
| 14:49.18 | kay__ | ping -4 192.168.44.142 |
| 14:49.31 | T0mW | ping -c 4 192.168.44.142 |
| 14:50.13 | T0mW | or just ping 192.168.44.142 |
| 14:51.01 | kay__ | same |
| 14:51.02 | T0mW | in the board, is there a linuxrc in the root directory? 'ls /linuxrc' |
| 14:51.02 | kay__ | hang |
| 14:51.17 | kay__ | oh wait |
| 14:51.27 | kay__ | PING 192.168.44.142 (192.168.44.142): 56 data bytes --- 192.168.44.142 ping statistics --- 4 packets transmitted, 0 packets received, 100% packet loss |
| 14:51.32 | kay__ | lol weird |
| 14:51.35 | T0mW | nod |
| 14:51.36 | kay__ | cannot even ping myself |
| 14:51.51 | T0mW | something basically wrong. |
| 14:52.34 | T0mW | I'm assuming that the school gave you an assembled and tested board? This board is supposed to be a good board? |
| 14:52.46 | kay__ | yup its a self assembled board |
| 14:52.53 | kay__ | lousy board i think |
| 14:52.55 | T0mW | or, did you put it together yourself. |
| 14:53.11 | kay__ | someone assembled it and i have to do development on it using openembedded |
| 14:53.19 | T0mW | ah, ok |
| 14:53.44 | T0mW | oe is what I'm struggling with today. It won't properly build my kernel on suse. |
| 14:53.57 | kay__ | even my prof say OE is hard |
| 14:54.07 | kay__ | i having headache just setting it up |
| 14:54.09 | T0mW | just a lot to it. |
| 14:54.25 | kay__ | now i am stuck at NFS |
| 14:54.31 | kay__ | i suspecting network issue |
| 14:54.38 | kay__ | but no idea how to debug it |
| 14:54.56 | T0mW | just for fun, what does '/sbin/route' say? |
| 14:55.19 | T0mW | just for fun, what does '/sbin/route -n' say? |
| 14:55.52 | kay__ | <PROTECTED> |
| 14:56.06 | T0mW | network layer needs to know where packets go |
| 14:56.13 | T0mW | that is correct. |
| 14:56.50 | kay__ | ahhh |
| 14:56.56 | T0mW | ? |
| 14:57.02 | kay__ | lost |
| 14:57.03 | kay__ | haha |
| 14:57.22 | kay__ | but |
| 14:57.26 | kay__ | inorder to ping to work |
| 14:57.30 | kay__ | it need to arp first |
| 14:57.35 | kay__ | so 2nd layer is needed |
| 14:57.40 | kay__ | if my 2nd layer is wrong |
| 14:57.42 | T0mW | heh, was going to mention arp. |
| 14:57.44 | kay__ | my ping shouldnt be working |
| 14:57.55 | kay__ | am i right to say that? |
| 14:58.08 | kay__ | i think i need to go dig out my networking notes |
| 14:58.20 | SpeedEvil | tcpdump both ends |
| 14:58.25 | T0mW | arp is the translation between an IP address to a MAC. It is down on the ethernet (physical) layer. |
| 14:58.26 | SpeedEvil | see if it's getting there |
| 14:58.39 | SpeedEvil | Sorry if I've not read enough backscroll for context |
| 14:58.40 | kay__ | ?? speedevil? |
| 14:59.22 | T0mW | arp only comes into play when you leave the dev board. It does not affect the board itself to ping itself. |
| 14:59.56 | kay__ | but he doesnt know 192.168.44.142 is itself yet |
| 15:00.02 | kay__ | until it arp first right? |
| 15:00.04 | T0mW | kay__: try this '/sbin/ifconfig lo 127.0.0.1', then try to 'ping 127.0.0.1' |
| 15:00.36 | kay__ | IT WORK! |
| 15:00.39 | kay__ | LOOPBACK WORKS! |
| 15:00.40 | kay__ | lol |
| 15:00.46 | kay__ | my interface is working fine at least |
| 15:00.47 | kay__ | haha |
| 15:00.54 | T0mW | good, that tells us the network layer is functional. |
| 15:01.20 | T0mW | we've narrowed it down to something with the ethernet chip. |
| 15:01.28 | kay__ | yea true |
| 15:01.43 | T0mW | kay__: do you have a linuxrc ? |
| 15:01.43 | kay__ | ok i will find out more tmr |
| 15:01.59 | kay__ | have |
| 15:02.53 | T0mW | ok, open that file and look at it. It is the bootup instructions for the linux system to start. You can put '/sbin/ifconfig lo 127.0.0.1' in there, if it is missing. |
| 15:03.56 | kay__ | i see glibberish |
| 15:04.22 | T0mW | the linuxrc is where everything starts to happen. In your case, otherwise /sbin/init is run and init reads the /etc/inittab file. |
| 15:04.35 | T0mW | yeah, busybox. |
| 15:04.45 | T0mW | busybox sux |
| 15:04.48 | T0mW | ducks |
| 15:05.30 | kay__ | but adding that line is just for booting up right? |
| 15:05.52 | T0mW | busybox is great when you have a 2meg flash chip to store a kernel + romfs, but it is terrible to work with if you ever had an embedded system with decent amount of file storage. |
| 15:06.08 | kay__ | i only have 2mb x 2 |
| 15:06.22 | kay__ | and my kernel+initramfs is >2mb |
| 15:06.26 | kay__ | i haven solve that problem yet |
| 15:06.36 | T0mW | I generally replace as much of busybox with other utils, for example, I do not use the busybox init, I turned that off and use the openembedded sysvinit package. |
| 15:06.51 | T0mW | do you have an SD card slot? |
| 15:06.56 | kay__ | have |
| 15:07.04 | kay__ | but no idea how to activate it haha |
| 15:07.24 | T0mW | LOL, load the kernel from flash using uboot, then have the kernel boot off the SD card. |
| 15:07.44 | T0mW | root=/dev/mmcblk0p1 |
| 15:07.48 | kay__ | err but that will be later |
| 15:07.59 | kay__ | i solve my problem |
| 15:08.06 | T0mW | mmcblk0p1 is mmc card block device 0 partition 1 |
| 15:08.07 | kay__ | i haven learn how to walk i dont want to fly first |
| 15:08.27 | T0mW | kay__: yeah, but you have to know that it is possible for you to fly! |
| 15:08.28 | kay__ | anyway tom |
| 15:08.43 | kay__ | does .cpio work as external initrd? |
| 15:08.53 | kay__ | i try to pass a .cpio into my kernel |
| 15:09.02 | T0mW | you don't need initrd to boot linux. |
| 15:09.06 | kay__ | but it say invalid file system format |
| 15:09.16 | kay__ | what u mean? |
| 15:09.25 | T0mW | compile your critical drivers (SD card, or ethernet) into the kernel. |
| 15:09.43 | kay__ | what i mean is i have my rfs in .cpio format |
| 15:09.51 | kay__ | i wan to pass it as extermal rfs |
| 15:09.56 | kay__ | using initrd |
| 15:10.04 | T0mW | initrd contains a tiny tiny linux system with /lib/modules/, /bin/sh and a linuxrc. |
| 15:10.16 | kay__ | i read kernel doc it say it will work |
| 15:10.16 | T0mW | rfs? |
| 15:10.23 | kay__ | root file system |
| 15:10.34 | T0mW | never done that. |
| 15:10.36 | kay__ | current i am using kernel+initramfs |
| 15:10.41 | kay__ | i wan to split it out |
| 15:11.10 | kay__ | ah |
| 15:11.15 | kay__ | thanks alot of tho |
| 15:11.18 | kay__ | anyway |
| 15:11.33 | kay__ | u do embedded system as your hobby or work? |
| 15:12.01 | T0mW | root=/dev/mmcblk0p1 ilnx=0tb init=/start noinitrd rootdelay=2 quiet |
| 15:12.20 | T0mW | that is my command line in uboot for the S3C2440 board (ARM). |
| 15:12.31 | T0mW | kay__: both, I live for this stuff. |
| 15:12.40 | kay__ | nice |
| 15:13.06 | T0mW | SD card driver is compiled into the kernel, not a module. |
| 15:13.43 | T0mW | I build the rootfs using openembedded, then format the card to ext3 and copy the contents of the openembedded image onto the card. |
| 15:14.16 | T0mW | just use fdisk to create the linux partition on the sdcard. |
| 15:14.45 | T0mW | kay__: good luck, must go wrestle with suse. |
| 15:15.13 | kay__ | thanks alot tomw |
| 15:15.17 | kay__ | all the best :) |
| 15:15.28 | kay__ | hope i dont have to ask u anymore :D |
| 15:15.54 | kay__ | cya all |
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| 15:33.28 | Mirell | is hip-deep now reading about Lucene... |
| 15:33.30 | *** mode/#edev [+o landley] by ChanServ |
| 15:33.40 | landley | Mirell: what's a lucene? |
| 15:33.59 | landley | The thing about getting up at 5am is that by the time I get to work 4 hours later, I need breakfast. |
| 15:34.10 | landley | is not used to eating until lunch. |
| 15:34.31 | landley | But in personal context: it's lunchtime. I keep getting confused by this, forgetting to eat, and getting all tired... |
| 15:34.45 | landley | is apparently old now. |
| 15:50.28 | Mirell | landley: It's a text search engine |
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| 20:21.17 | T0mW | Is there a "limit" to what kernel versions the gcc compilers will build? I've been trying to build 2.6.31.12 against gcc-4.5.1, gcc-4.6.2 and gcc-4.4.1 |
| 20:21.28 | T0mW | only 4.4.1 will build a bootable kernel. |
| 20:22.50 | roxfan | it seems you've answered your question |
| 20:26.22 | T0mW | yeah, well, all but 4.4.1 are inside openembedded. |
| 20:26.40 | T0mW | no, the 4.6.2 is suse. |
| 20:32.05 | T0mW | show stopper |
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| 22:08.36 | slashbeast | landley: yo, maybe you can answer me, I am not sure about ext2/3/4 fsck process, do busybox's e2fsck work on all exts (need only kernel support) or I need e2fsprogs? |
| 22:09.11 | landley | slashbeast: it should work on ext3, and I think most instances of ext3. |
| 22:09.28 | landley | (It'll barf on unknown feature flags if it can't handle the filesystem.) |
| 22:09.45 | slashbeast | my initramfs starting to looking like a mini-rescue-distro. |
| 22:09.48 | landley | So it shouldn't eat the filesystem, it'll just say "I dunno how to handle h-trees" or some such. |
| 22:10.05 | landley | I'm pretty sure it hasn't got any ext4 support, but it's been 6 months since I looked closely at it... |
| 22:10.17 | landley | Ok, it's been 4 years since I looked _closely_ and 6 months since I _looked_. |
| 22:10.35 | landley | slashbeast: I have a section in my giant presentation on "accidental distros". :) |
| 22:10.40 | landley | Figure out where your boundaries are. |
| 22:10.58 | landley | tomsrtbt had a marvelous one: as much Linux as we can fit on a 3.5 floppy. |
| 22:11.00 | slashbeast | landley: link me to it please |
| 22:11.05 | landley | They formatted it up to 1.7 k but it had a HARD LIMIT. |
| 22:11.19 | slashbeast | I like the term accidental distros |
| 22:12.32 | landley | slashbeast: http://speakerdeck.com/u/mirell/p/developing-for-non-x86-targets-using-qemu starting slide 78. |
| 22:19.56 | slashbeast | landley: isnt that the your and Mirell presentation? |
| 22:20.06 | landley | slashbeast: yup. |
| 22:20.14 | landley | We should really update it. And break it into chunks. |
| 22:20.19 | slashbeast | last time I opened it my firefox frozen, dmesg hed fuckton of io errors and my disk happen to have bad sectors. |
| 22:20.24 | slashbeast | now I worry. ;p |
| 22:24.19 | slashbeast | 'push your changes upstream, which makes them sombody's else problem'. I love it. |
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| 23:33.52 | slashbeast | landley: I wonder to link you to it when I write the readme, https://github.com/slashbeast/better-initramfs/blob/master/README.rst |
| 23:34.01 | slashbeast | landley: it woudnt workout without aboriginal. |
| 23:34.12 | landley | Feel free. :) |
| 23:37.39 | landley | probalbly should not be responding to the comments in http://lwn.net/Articles/478308/ |
| 23:37.44 | landley | But it just came unlocked for me... |
| 23:37.57 | landley | (The subscriber export links don't let you read or reply to comments.) |
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| 23:59.59 | calculus | slashbeast: I tend to do that quite a bit (making an initramfs for support of lvm and others), how large does your initramfs become? |