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| 00:51.48 | Mirell | Meep. http://lifehacker.com/5481921/the-day-traders-paradise |
| 00:57.03 | SpeedEvil | :) |
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| 17:23.35 | prpplague | man buildroot is sooooo badly damaged |
| 17:24.01 | kergoth | how so? |
| 17:24.54 | prpplague | kergoth: tons of missing patches, none of the stock builds complete with errors, and config options that don't match |
| 17:25.11 | kergoth | ouch :( |
| 17:27.34 | prpplague | kergoth: total bit rot |
| 17:29.49 | prpplague | is really disgusted at how many OSS projects are managed |
| 17:30.32 | kergoth | heh, lots of them aren't managed at all :) |
| 17:31.02 | prpplague | indeed |
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| 17:36.28 | Mirell | Yep. Yep. |
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| 19:53.26 | T0mW | prpplague: ping |
| 19:53.31 | prpplague | T0mW: pong |
| 19:53.59 | T0mW | prpplague: I was wrong about having some time to work on something else. The project I'm on just took a nasty turn this weekend. |
| 19:54.14 | prpplague | T0mW: doh |
| 19:54.19 | prpplague | T0mW: i hate it when that happens |
| 19:54.34 | T0mW | prpplague: yeah. I will be intense for a while. |
| 19:54.41 | T0mW | s/I/it |
| 19:54.42 | T0mW | heh |
| 19:54.46 | prpplague | T0mW: did you have time to look over that schematic? |
| 19:55.04 | T0mW | prpplague: briefly, I did not research the chips |
| 19:55.24 | prpplague | T0mW: ahh ok |
| 19:55.30 | prpplague | T0mW: np then |
| 19:55.32 | T0mW | prpplague: looks like an add-on to an existing system core |
| 19:55.58 | prpplague | T0mW: yea, omap3 SoM |
| 19:56.26 | T0mW | prpplague: for the most part, I did not see anything jump out at me. But, that does not mean that some signal is not tied up/down that should be. |
| 19:57.01 | prpplague | T0mW: yea, i was mainly looking at feedback on the overall design, it is complete and going into pre-production now |
| 19:57.21 | T0mW | prpplague: I need your opinion on something |
| 19:57.38 | T0mW | prpplague: the benefit of your experience |
| 19:57.56 | prpplague | T0mW: hehe, you make me laugh |
| 19:58.00 | T0mW | ? |
| 19:58.15 | T0mW | prpplague: what, me asking you a question for a change? |
| 19:58.21 | T0mW | heh |
| 19:58.29 | prpplague | <T0mW> prpplague: the benefit of your experience |
| 19:58.35 | T0mW | ha |
| 19:59.18 | T0mW | anyway, I'm wrestling with mapping out some RAM on a linux box. The box could be embedded or computer, whatever. |
| 19:59.26 | prpplague | T0mW: i think someone once said something like "having experience is just another way of saying you've screwed up alot" |
| 20:00.01 | T0mW | What I'm considering on doing is allowing the memory controller to setup for the full RAM field so the address space is there. |
| 20:00.37 | T0mW | I know I should say "kernel logical" or "kernel virtual" etc., but I still haven't got an understanding of those terms yet. |
| 20:01.04 | prpplague | what are you going to use the ram for? |
| 20:02.06 | T0mW | anyhow, I want to restrict the kernel to using everything but the last 1 meg of available RAM. Then, use something like mmap to have my software gain acces to that 1meg entirely for itself. Sort of what X does for video ram. |
| 20:02.54 | SpeedEvil | there is a maxram parameter for that IIRC |
| 20:03.03 | SpeedEvil | Somethinglike that |
| 20:03.10 | SpeedEvil | kernel flag |
| 20:03.18 | T0mW | I need to have allocations of memory that fall on specific boundaries. e.g. addr & 0x1000, addr & 0x3f00, etc. |
| 20:03.45 | T0mW | SpeedEvil: ok |
| 20:04.05 | SpeedEvil | But I've never done this. |
| 20:04.09 | T0mW | when you malloc, it gives you a pointer that is not on a boundary |
| 20:04.51 | T0mW | I could, I guess over-alloc memory, then choose an offset into it that puts me on an even boundary. |
| 20:06.22 | T0mW | prpplague: problem is that I need to have at least 512K on a clear boundary: e.g. 0xNNNN80000 |
| 20:06.42 | T0mW | otherwise, dereferencing pointers / arrays is going to take too much overhead. |
| 20:07.34 | prpplague | T0mW: interestings |
| 20:07.42 | T0mW | prpplague: ever do anything like that? like have your user program (not kernel driver) access say a video buffer directly, not with frame buffer? |
| 20:07.43 | prpplague | T0mW: there a bunch of ways you could do that |
| 20:07.53 | prpplague | T0mW: CosmicPenguin might be able to give you some more input |
| 20:08.10 | prpplague | T0mW: but what i would do is set the kernel to the full size of the ram |
| 20:08.32 | prpplague | T0mW: then in the machine config i would set aside the memory you want to use as a resource |
| 20:08.53 | prpplague | T0mW: which would allow you to protect it and define the location you want |
| 20:09.26 | prpplague | T0mW: let me see if i can find you a good example |
| 20:11.36 | T0mW | prpplague: same result, different direction. either use maxram (as SpeedEvil suggests), or reserve some ram by saying it is already in use by the machine config. |
| 20:12.00 | T0mW | prpplague: then, use a mmap syscall to gain access to that memory. |
| 20:12.14 | prpplague | T0mW: right |
| 20:12.32 | prpplague | T0mW: something prevent you from doing that? |
| 20:13.13 | T0mW | no, just wanted somebody else's input before I spent the time trying to get it done. All ideas sound good to me in MY head... |
| 20:13.23 | prpplague | T0mW: hehe |
| 20:13.28 | T0mW | heh |
| 20:13.33 | prpplague | T0mW: the use of resources in the machine file is more accepted |
| 20:13.38 | T0mW | Sometimes you just have to stop and ask for directions. |
| 20:14.05 | prpplague | T0mW: do a grep for "resource" in the arm machine dirs |
| 20:14.13 | T0mW | prpplague: yeah, trying not to get too invasive as I will have to mod a kernel for both a PC computer (linux box) as well as embedded. |
| 20:14.18 | prpplague | T0mW: you can see they setup resources for all kinds of stuff |
| 20:14.49 | prpplague | T0mW: yea if you stick with the resource allocation that would probably be better |
| 20:14.59 | T0mW | ok |
| 20:15.01 | T0mW | thanks |
| 20:15.49 | T0mW | it is one of my options at this point. Unless, I can see my way clear to express some idea in the linker script to layout this data field the way I want. |
| 20:17.54 | T0mW | prpplague: I hate assembly language any more. I tried to get this guy into writing in C about 15 years ago. But, he didn't have time... |
| 20:18.51 | prpplague | T0mW: hehe |
| 20:21.10 | T0mW | prpplague: I think I need to go someplace, do some girl-watching, let my mind float and see what ideas percolate up into my consciousness. |
| 20:21.25 | prpplague | T0mW: hehe |
| 20:21.37 | prpplague | T0mW: sometimes thats the only way to move forward |
| 20:21.44 | T0mW | prpplague: doesn't that happen to you at the nudie-bar? heh |
| 20:22.10 | T0mW | prpplague: I'm in Pennsylvania so we don't have those around here. |
| 20:22.29 | prpplague | T0mW: we have one just about on every corner down here |
| 20:22.34 | T0mW | nod |
| 20:23.09 | T0mW | prpplague: they had them over in New Jersey many years ago, but I think they finally outlawed them. |
| 20:23.19 | prpplague | doh |
| 20:24.18 | T0mW | prpplague: first time I was ever in one of those places was in California. A guy took me to one and I didn't know what the place was until we got inside. Talk about a surprise! |
| 20:24.35 | prpplague | hehe |
| 20:24.40 | T0mW | YO! |
| 20:25.12 | T0mW | alright, time to get the heck out of here and implement the "plan". |
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| 21:00.25 | Mirell | Indeed. |
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| 21:59.14 | prpplague | neeeeeeed cofffeeeeeee |
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| 22:25.23 | Mirell | It's 4:25! |
| 22:53.25 | roxfan | lies |
| 22:53.28 | roxfan | [23:25] <Mirell> It's 4:25! |
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| 23:28.13 | Mirell | Heh |
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