| 06:57.43 | *** join/#openjtag purl (i=ibot@pdpc/supporter/active/TimRiker/bot/apt) |
| 06:57.43 | *** topic/#openjtag is This is the place to discuss development of Open JTAG tools and Bootloaders |
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| 17:21.12 | *** join/#openjtag pauld (n=paulp@81.174.137.118) |
| 17:21.39 | pauld | has anyone here much experiance if increasing the moemory size of a Linksys NSLU2? |
| 17:21.59 | NAiL | I haven't, but there's docs on the wiki |
| 17:22.18 | pauld | I'm looking at the info on nslu2-linux - is that the wiki you mean? |
| 17:22.23 | NAiL | yeah |
| 17:22.42 | NAiL | I have followed a few discussions about it, so I have a general idea though ;) |
| 17:22.42 | pauld | I'm clear on the hardware side - I'm just not sure what to do software wise |
| 17:23.03 | NAiL | You need to either recompile redboot or replace it with apex |
| 17:23.08 | NAiL | (or another bootloader) |
| 17:23.18 | pauld | ok - I read about apex |
| 17:23.29 | NAiL | I'm very happy with apex ;) |
| 17:23.36 | NAiL | do you have jtag? |
| 17:23.47 | pauld | right - that is my first task then - to read up on apex |
| 17:23.59 | pauld | I have to admit - I don't know what jtag is! |
| 17:24.07 | pauld | I just found this channel via a link on the wiki |
| 17:24.29 | NAiL | jtag is a tool that enables you to write to flash even though your bootloader is screwed |
| 17:24.44 | NAiL | ie, it's not very smart to flash your bootloader without jtag |
| 17:25.01 | NAiL | because if it fails, you're SOL |
| 17:25.27 | NAiL | do you have serial? |
| 17:25.33 | pauld | nope :( |
| 17:25.45 | NAiL | then I wouldn't even attempt it |
| 17:25.50 | NAiL | serial is easy to get though |
| 17:26.03 | NAiL | what country are you in? |
| 17:26.08 | pauld | england |
| 17:26.26 | NAiL | Shouldn't be much of a hassle to get a USB->serial cable there |
| 17:26.37 | pauld | oh - yes, I think I can get one |
| 17:26.44 | NAiL | cellphone cables work, since they use 3.3v which is what you need for the slug |
| 17:26.50 | pauld | I thought there was some hardware mode to use serial |
| 17:27.13 | NAiL | You'll have to solder on the header, but that's not hard compared to replacing the ram chips |
| 17:27.50 | pauld | hmmm- I'm starting to think I am out of my depth here hacking about with this |
| 17:27.56 | NAiL | hehe |
| 17:28.05 | pauld | I've persuaded someone to do the moemory for me but I'm not sure about other stuff too |
| 17:28.08 | NAiL | There's a howto on how to add the serial stuff on the wiki |
| 17:28.25 | NAiL | lucky you... I have to do the memory myself :P |
| 17:28.29 | pauld | I thought it was just a case of putting in the extra ram, modifying redboot and then doing something (not sure what) to openslug |
| 17:28.51 | pauld | I'm a danger with a soldering iron - I doubt if I could do one pin, let alone 100! |
| 17:28.58 | NAiL | IIRC, you have to recompile the kernel.. but I'm not entirely sure about that part |
| 17:29.03 | NAiL | haha |
| 17:29.25 | pauld | I'll need to check around for another nas with more memory as standard I think |
| 17:29.50 | NAiL | ds101 |
| 17:29.58 | NAiL | Synology DiskStation DS101 ;) |
| 17:30.05 | NAiL | or, Loft |
| 17:30.08 | NAiL | both have 64MB |
| 17:30.19 | NAiL | and both are ixp4xx |
| 17:30.23 | NAiL | (ie, same as nslu2) |
| 17:30.30 | pauld | need more than 64 I think - was thinking about 256 |
| 17:30.34 | NAiL | hmm |
| 17:30.44 | NAiL | I'm not sure if 256 is possible |
| 17:31.08 | pauld | 128 might do it - would need to check |
| 17:31.23 | pauld | I need it to run slimserver with a lot of music files |
| 17:31.29 | NAiL | Someone *has* done 128, and I think they got it to work |
| 17:31.48 | pauld | it slows down too much on the 32mb slug with <10% of my collection |
| 17:31.55 | NAiL | ouch |
| 17:32.08 | NAiL | I've got no idea what the mem usage of slimserver is |
| 17:32.38 | pauld | anything > about 8000 tracks starts to page on the slug |
| 17:32.46 | pauld | about 26mb I think |
| 17:33.27 | pauld | seesm to go up exponentially, the moe tracks I put in |
| 17:33.30 | NAiL | so ~3k per track in other words |
| 17:33.32 | NAiL | ouch |
| 17:34.07 | pauld | I would like to use it to serve video too but that is proving too difficult as I need apache 2.1 |
| 17:34.30 | pauld | can't get 2.1 to work properly on unslung - will try on openslug now I've installed it |
| 17:34.48 | pauld | I'm starting to think I need to go back to a pc to serve this stuff |
| 17:35.04 | NAiL | hmm |
| 17:35.07 | pauld | a nice quiet pentium-m booting from compact flash would do the job I think |
| 17:35.17 | NAiL | mini-itx, perhaps? |
| 17:35.28 | pauld | yes, I've looked at them - not cheap though |
| 17:36.17 | NAiL | would a pentium-m be cheaper? |
| 17:36.25 | NAiL | (and fanless?) |
| 17:37.01 | pauld | some guy on a web review ran a pentium-m without a fan (and also without a heatsink for a while!!!!) |
| 17:37.05 | pauld | tom's hardware I think |
| 17:37.15 | pauld | how cool is that - a cpu with no fan & heatsink :-) |
| 17:37.21 | NAiL | The ds101g+ has 64mb ram, and space for two more chips... It might be possible to upgrade it to 128/256... But noone's tried this yet. |
| 17:37.28 | NAiL | heh, that's sick :P |
| 17:37.39 | NAiL | I remember the good times when the heatsinks weren't needed |
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| 17:38.46 | pauld | good point - life was so much simpler then |
| 17:38.49 | NAiL | yeah |
| 17:40.41 | pauld | hmmm - mini-itx isn't as expensive as it was the last time I looked - I might go down that route |
| 17:41.00 | NAiL | the fanless ones are kinda attractive |
| 17:41.44 | pauld | yes, they are |
| 17:42.00 | pauld | I looked in to getting one as a media player to hook up to a tv about a year ago |
| 17:42.16 | pauld | but I bought a networked video client instead and use a fileserver in another room |
| 17:42.58 | NAiL | that works too ;) |
| 17:43.40 | pauld | now I'm looking to keep the files (or at least a subset of them) on a nas and not have to keep the pc on 24x7 |
| 17:44.18 | pauld | sadly, with the slug, the subset is 10% of my audio collection and video files less than 1/2 hour |
| 17:44.29 | pauld | due to memory for the audio and apache2.0 for the video |
| 17:44.36 | pauld | so all is not quite how I planned |
| 17:52.01 | pauld | NAiL: thank you for your help and advice - I have learned a lot today! |
| 17:52.28 | NAiL | np |
| 17:52.44 | pauld | I'll let you know how I get on |
| 17:52.50 | NAiL | cool |
| 21:45.36 | *** join/#openjtag Tiersten (i=tman@nslu2-linux/Tiersten) |
| 22:08.26 | lennert | i wonder if you can do ethernet over serial ata |
| 22:08.29 | lennert | or something like that |
| 22:08.50 | lennert | the v2pro board has serial ata connectors |
| 22:09.12 | lennert | so.. you can make the v2pro emulate a sata disk target, but there should be an easier way |
| 22:09.34 | Tiersten | erm... why don't you just put a NIC into it? |
| 22:09.47 | Tiersten | it's possible in theory but why is another thing... |
| 22:10.58 | lennert | i can't put a nic into the v2pro board, can i? |
| 22:11.11 | lennert | http://www.digilentinc.com/info/XUPV2P.cfm that one i mean |
| 22:11.20 | lennert | people do ethernet over scsi too :) |
| 22:11.38 | lennert | the sata is really the only high-speed port on the board that i can easily interface with a pc |
| 22:11.50 | Tiersten | The expansion connectors? |
| 22:12.33 | lennert | what would i do with the expansion connectors? :) the restriction is that i know nothing about electronics and can't solder worth shit. |
| 22:13.37 | Tiersten | You wanted to do it via software on the host? |
| 22:14.13 | Tiersten | As in plug that board into the PC SATA controller and then do ethernet over that link? |
| 22:14.18 | lennert | if possible, to exchange packets between a linux pc and that board at a rate higher than 100mbps |
| 22:14.23 | lennert | yeah |
| 22:14.25 | lennert | any protocol, really |
| 22:14.30 | lennert | as long as i don't have to emulate a disk |
| 22:14.39 | lennert | (people do ip over scsi too ;) |
| 22:15.01 | lennert | sorry if i'm unclear |
| 22:15.38 | Tiersten | yeah. I know about the various IP-over-SCSI projects |
| 22:15.57 | Tiersten | You need multiple ethernet interfaces? |
| 22:16.17 | lennert | one would be enough |
| 22:16.37 | Tiersten | so umm... use the ethernet connector right below the SATA ones? |
| 22:16.52 | lennert | that's 100mbps only |
| 22:17.59 | Tiersten | you want gigE? |
| 22:18.50 | lennert | if you know of any board that has that (apart from the endace ones), that'd be nice |
| 22:19.04 | Tiersten | whats your intended project? |
| 22:20.56 | lennert | i'd like to have a go at implementing some of the stuff i've implemented on the ixp2000 on an fpga instead |
| 22:21.37 | Tiersten | Oh? What have you done? |
| 22:22.31 | lennert | DoS filtering, string searching, pattern matching |
| 22:22.35 | lennert | that kind of stuff |
| 22:27.48 | Tiersten | Ah okay. Go write a Linux driver for it :) |
| 22:28.11 | lennert | for the ixp2000? already done. |
| 22:28.20 | lennert | it's going upstream after 2.6.14, hopefully |
| 22:28.36 | lennert | are you familiar with the ixp2000? |
| 22:28.38 | Tiersten | No. I mean your IP-over-SATA thing :) |
| 22:28.43 | lennert | oh, right |
| 22:29.05 | lennert | ethernet-over-sata then |
| 22:29.15 | lennert | or just some way of sending crap over sata |
| 22:29.21 | lennert | but there must be something like that already.. |
| 22:29.38 | Tiersten | A better solution would be to interface it via PCI-Express |
| 22:29.45 | Tiersten | Why must there be something like that already? |
| 22:30.06 | lennert | i'm sure that other people want to send crap over sata too |
| 22:30.20 | lennert | they're doing it with infiniband also, things like hypertransport over infiniband |
| 22:31.09 | lennert | Tiersten: if you know of any fpga board with {pci express,pci,ethernet} that's affordable, please shout :) |
| 22:31.23 | lennert | Tiersten: all the eval boards i've seen are like a gazillion dollars |
| 22:31.39 | Tiersten | hypertransport over infiniband? that's a little strange to say the least |
| 22:31.48 | lennert | strange, yeah |
| 22:31.57 | Tiersten | they're basically competing standards though |
| 22:32.10 | lennert | harald welte was talking about that incessantly at the last fosdem |
| 22:32.26 | lennert | hypertransport is short-range, isn't it? |
| 22:32.37 | Tiersten | Yeah |
| 22:32.38 | lennert | between the opteron and the pci-x tunnel and stuff |
| 22:32.45 | Tiersten | It's not just for that |
| 22:32.53 | Tiersten | It's usually within a device however |
| 22:32.56 | lennert | yeah i know |
| 22:33.11 | lennert | hmm, why'd you use it within a device? |
| 22:33.28 | Tiersten | A router for example |
| 22:34.17 | lennert | i don't quite see that? |
| 22:34.54 | lennert | anyway |
| 22:35.01 | lennert | harald welte is the guy to ask |
| 22:35.11 | Tiersten | You need a very high speed bus? |
| 22:35.13 | lennert | he thought it was better than sliced bread |
| 22:35.27 | Tiersten | Oh. You meant hypertransport over infiniband? |
| 22:35.34 | Tiersten | Thought you were asking about hypertransport itself |
| 22:35.59 | lennert | i think i'm confused now :) |
| 22:36.13 | Tiersten | NEvermind :) |
| 22:36.14 | lennert | "I don't quite understand why you'd use hypertransport in a router but that might just be because of ignorance." |
| 22:36.38 | lennert | "I would love an FPGA dev board with pci/pci-e/ethernet to play with, I have no direct need for such a board though." |
| 22:36.56 | Tiersten | What is wrong with using hypertransport in a router? It's high speed and you need that in a router if you want to handle multiple interfaces at full speed |
| 22:37.04 | Tiersten | Better than designing it all yourself anyway... |
| 22:37.57 | lennert | the PHY will either speak spi-3 if it's 2.5gb/s-ish, or spi-4.2 if it's 10gb/s-ish |
| 22:38.04 | lennert | i don't know of any hypertransport PHYs |
| 22:38.21 | lennert | switch fabrics mostly use CSIX |
| 22:38.39 | lennert | i'm sure it has its place, i just never heard it being used in routers |
| 22:39.07 | Tiersten | It was mentioned several times in the hypertransport marketing material |
| 22:39.22 | lennert | there's this hypertransport alliance isn't there? i'll have a look there. |
| 22:39.27 | Tiersten | yeah |
| 22:39.31 | Tiersten | hypertransport.org |
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