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@@ -20,13 +20,17 @@ cargo build --target riscv64imac-unknown-none-elf
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The build should finish without any errors.
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If you see any error like `invalid register a0: unknown register`, it's likely that you cross built this project
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-into platforms other than RISC-V. RustSBI adapts to RISC-V SBI interface, you may cross build this project
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-into any bare metal RISC-V platform targets.
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+into platforms other than RISC-V. RustSBI adapts to RISC-V SBI interface, so you may cross build this project
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+into any bare metal RISC-V platform targets instead.
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The target platform of RustSBI is usually a bare metal target. Under normal circumstances these targets in Rust
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would start with `riscv??-` and end with `-none-elf`. If a non bare metal target is built to, it would throw
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build error in `riscv` dependency crate or RustSBI library itself.
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+## Minimum supported Rust version
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+
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+To compile this project, you may need at least nightly Rust version of `rustc 1.59.0-nightly (c5ecc1570 2021-12-15)`.
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+
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## Binary downloads
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RustSBI is provided with separate library and binary projects, this is the repository for RustSBI library.
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