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| 14:27.52 | key2 | is it possible with a virtex2 that has 2 powerpc in it, to run a linux that uses both proc ? |
| 14:31.48 | p2-mate | key2: no |
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| 19:15.24 | key2 | p2-mate: why not ? |
| 19:18.19 | p2-mate | key2: the 405 does not support cache coherency between processors |
| 19:35.28 | key2 | sux |
| 19:35.37 | key2 | so it's possible to run 2 separated linux ? |
| 19:36.04 | p2-mate | yes |
| 19:36.08 | p2-mate | that should be possible |
| 19:37.29 | key2 | and since the two PPC are hardcore, there is no way to make a cache coherence I guess |
| 19:37.43 | key2 | hardcoded |
| 19:37.51 | p2-mate | I don't think so no |
| 19:38.12 | key2 | p2-mate: u've already ran a linux on a xilinx ? |
| 19:38.45 | p2-mate | key2: yes |
| 19:39.02 | key2 | on what board ? |
| 19:39.06 | key2 | digilent one ? |
| 19:39.08 | p2-mate | ml403 |
| 19:39.37 | p2-mate | not on that one no |
| 19:39.47 | p2-mate | but it shouldn't make much difference |
| 19:39.48 | key2 | but that should also be possible right ? |
| 19:39.51 | p2-mate | sure |
| 19:40.15 | key2 | how many PPC in the ml403's xilinx |
| 19:40.15 | key2 | ? |
| 19:40.23 | p2-mate | only 1 |
| 19:40.41 | key2 | like the blackdog |
| 19:41.33 | p2-mate | a collegue has done ecos and linux on dual core xilinx fpga. I don't know on which board though |
| 19:42.00 | lennert | p2-mate: mmmmm virtex |
| 19:42.25 | p2-mate | lennert: yep :) |
| 19:42.32 | key2 | well what else :) |
| 19:43.03 | lennert | all i did so far was an fm transmitter with the 8bit vga dac :P |
| 19:43.03 | key2 | lennert: which board do u have ? |
| 19:43.12 | key2 | lol |
| 19:49.56 | key2 | p2-mate: and basically, how do u do for putting a linux on it ? I mean if the PPC is just a core inside the virtex, I guess u have at least to say where the GPIO is, where the DDR is, dunno if there are already some DDR driver built into the core or not so you might have to use one or write it... |
| 19:50.32 | p2-mate | key2: you need a FPGA design which has a memory controller, UART, GPIO etc yes |
| 19:50.54 | p2-mate | there are already drivers for most of the xilinx provided blocks |
| 19:51.17 | p2-mate | so it's a matter of assigning the right addresses |
| 19:51.33 | key2 | p2-mate: so you have to change the kernel |
| 19:51.44 | key2 | and say where are the addresses of the different chips? |
| 19:51.46 | p2-mate | the DDR memory needs to be at address 0 |
| 19:51.53 | p2-mate | yes, basically |
| 19:52.05 | key2 | ok |
| 19:52.26 | key2 | and there are already designs with MC, UART, GPIO ? |
| 19:52.38 | key2 | or have to make them ? |
| 19:57.17 | p2-mate | there are reference designs on the xilinx website yes |
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| 20:27.29 | key2 | and there are kernel already configured for that ? |
| 20:28.04 | key2 | I mean It won't be enough to just take a crosscompiler and compile the kernel i guess |
| 20:38.58 | p2-mate | key2: iirc most of the support is in the standard tree by now |
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| 21:20.30 | lennert | p2-mate: i didn't quite like the xilinx license on the plb cores when i looked at it |
| 21:21.50 | p2-mate | they are by no means free indeed |
| 21:22.02 | p2-mate | OTOH I don't know about any free PLB cores |
| 21:22.11 | lennert | maybe it's time someone wrote some :-) |
| 21:22.20 | p2-mate | feel free :) |
| 21:22.41 | lennert | i have some evil-licensed intel microcode to rewrite first :) |
| 21:23.21 | p2-mate | for ? |
| 21:23.40 | lennert | ixp2300 |
| 21:23.46 | p2-mate | ah |
| 21:24.10 | p2-mate | at least there are gratis tools for that one iirc |
| 21:24.50 | lennert | yeah, that's another thing that bugs me about xilinx |
| 21:25.21 | lennert | i still don't like the intel license on their s/w so i reverse engineered the insns format and wrote a different assembler :-) |
| 21:25.21 | p2-mate | well altera isn't any better I think |
| 21:25.40 | lennert | true |
| 21:26.08 | lennert | there's one brand that give away their tools.. lattice? |
| 21:26.13 | lennert | can't remember now |
| 21:27.59 | p2-mate | lattice ? hmm |
| 21:30.16 | key2 | lennert: ixp2300 ?? |
| 21:30.28 | key2 | the network ctrl ? |
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