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| mithro | cr1901_modern: Well, I must have been wrong about the fact that micropython + riscv working anywhere? | 02:29 |
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| cr1901_modern | mithro: From what I can tell, riscv has only been tested up to the BIOS prompt. | 07:56 |
| cr1901_modern | (Sorry I fell asleep _hard_. Awake now.) | 07:56 |
| mithro | cr1901_modern: I was sure it had been tested before... | 07:57 |
| cr1901_modern | mithro: Well... mmicko got it working on ice40. So there's "prior art" for it working. | 08:01 |
| cr1901_modern | It just doesn't work w/ our set of gateware :P | 08:01 |
| mithro | Sure | 08:01 |
| cr1901_modern | mithro: Adding lm32 fupy to icebreaker as a "sanity" check now | 08:17 |
| cr1901_modern | I imagine you'll be asleep within the hour :P | 08:17 |
| mithro | Correct | 08:18 |
| cr1901_modern | mithro: Well, I'll just leave a PR and you can merge when you get the chance. I'm going back to riscv fupy once icebreaker has been added in. | 08:19 |
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| daveshah | _florent_: playing about trying to get the ULX3S demo to build. But for some reason LiteX is trying to use system gcc rather than lm32-elf-gcc | 12:05 |
| daveshah | I am seeing "as: unrecognized option '-mmultiply-enabled'" | 12:05 |
| daveshah | ah, nvm | 12:21 |
| daveshah | I had managed to install binutils in /usr and gcc in /usr/local | 12:21 |
| daveshah | reinstalling binutils in /usr/local fixed it | 12:21 |
| daveshah | _florent_: https://github.com/enjoy-digital/litex/pull/122 | 12:34 |
| tpb | Title: Switch Trellis build to use LPF constraints; working on ULX3S by daveshah1 · Pull Request #122 · enjoy-digital/litex · GitHub (at github.com) | 12:34 |
| daveshah | ULX3S does now get to the LiteX BIOS, need to work on the SDRAM now | 12:35 |
| daveshah | "Memtest bus failed: 256/256 errors | 12:35 |
| daveshah | Memtest data failed: 524288/524288 errors | 12:35 |
| daveshah | Memtest addr failed: 8191/8192 errors" | 12:35 |
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| cr1901_modern | mithro: https://github.com/timvideos/litex-buildenv/pull/95 | 13:07 |
| tpb | Title: platforms: Add icebreaker platform with base target. Micropython boots. by cr1901 · Pull Request #95 · timvideos/litex-buildenv · GitHub (at github.com) | 13:07 |
| cr1901_modern | cc: esden | 13:08 |
| cr1901_modern | This was the quickest port yet LOL. Took me less than an hour from creating a new file to micropython boot. | 13:08 |
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| daveshah | Ah, seems the ULX3S SDRAM clock wasn't connected. Let's see if connecting it fixes things... | 13:28 |
| daveshah | Getting a lot closer now | 13:34 |
| daveshah | Memtest data failed: 823/524288 errors | 13:34 |
| daveshah | Memtest addr failed: 14/8192 errors | 13:34 |
| daveshah | Memory initialization failed | 13:34 |
| daveshah | Probably just need to tweak the dodgy lut-phase-shifter | 13:35 |
| _florent_ | daveshah: thanks for testing/fixing, yes with the results you have it's probably related to the phase shift | 13:50 |
| daveshah | _florent_: removing the phase shifter altogether and it's almost 100% failure, so yes it's definitely related | 13:51 |
| daveshah | seeing a similar error rate with 10 LUTs in the shifter | 13:51 |
| daveshah | might just have to wait until PLLs are supported, shouldn't be too long anyway | 13:52 |
| _florent_ | daveshah: yes we want wait PLL support | 13:54 |
| _florent_ | daveshah: is LPF already integrated in Trellis btw? | 13:55 |
| daveshah | _florent_: it's an open PR | 13:55 |
| daveshah | awaiting review, should be merged by the end of today | 13:55 |
| daveshah | https://github.com/YosysHQ/nextpnr/pull/100 | 13:57 |
| tpb | Title: ecp5: Add LPF parser and IO buffer insertion by daveshah1 · Pull Request #100 · YosysHQ/nextpnr · GitHub (at github.com) | 13:57 |
| _florent_ | ok, i'll merge the LiteX PR after | 13:57 |
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| nrossi | any ideas on how to get litex bios to boot the firmware on the arty/lm32/base target when running in QEMU? | 15:01 |
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| nrossi | ended up just using net instead of base. | 16:00 |
| nrossi | mithro: you asked for OE built litex micropython -> https://gist.github.com/nathanrossi/9f1c2d876622f69386684a2242787e60 | 16:00 |
| tpb | Title: OE runqemu litex micropython · GitHub (at gist.github.com) | 16:00 |
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| esden | cr1901_modern: YEY! Thanks! :D | 17:28 |
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| mithro | nrossi: Oh cool! Won't have time to look at it until next week probably | 18:35 |
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