Peripheral codegen for Grapefruit / Cosmo #2010
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| name: String, | ||
| value: u8, | ||
| } | ||
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| #[derive(Debug, Deserialize)] | ||
| #[serde(rename_all = "lowercase")] | ||
| pub enum SwAccess { |
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As a note, there are a few more possible types here: https://systemrdl-compiler.readthedocs.io/en/stable/api/types.html#systemrdl.rdltypes.builtin_enums.AccessType
that could show up.
We also don't do much with the OnRead and OnWrite types described below that section but am open to doing so if there's code-gen value.
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Interesting, I'm going to leave those as unimplemented so that they'll fail loudly if we ever end up using them!
| @@ -67,14 +65,16 @@ fn main() -> ! { | |||
| // Idol loop after the FPGA has been brought up. | |||
| let seq = | |||
| drv_spartan7_loader_api::Spartan7Loader::from(LOADER.get_task_id()); | |||
| seq.ping(); | |||
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Intentional drop of the ping?
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Yes, the call to seq.get_token() is what ensures that the FPGA is loaded.
| _ => { | ||
| variant_errors.push(compile_error( | ||
| t.span(), | ||
| &format!( | ||
| "unexpected token {t:?}; expected #[idol(...)]" |
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I'm guessing most of this is the fallout from syn update?
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Yeah, they revamped the meta syntax tree in v2
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This PR adds a new target to
build-fpga-regmap, generating Rust code for a memory-mapped peripheral. For Grapefruit and Cosmo, the Spartan-7 FPGA is connected over FMC, so we can treat peripherals implemented in the FPGA as native(ish). This PR uses the new codegen paths forcosmo-hfandgrapefruit-seq, replacing raw addresses. The peripheral types take adrv_spartan7_loader_api::Spartan7Token, which proves that the FPGA is loaded and running.Other changes that came along for the ride:
drv/spartan7-loader/grapefruit/subfolder. I also updated to a more recent build (latestmain), and removed the HTML file (since the JSON is smaller + has the same information).synis bumped to version 2, which requires a few miscellaneous changes