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31 lines
816 B
Rust
31 lines
816 B
Rust
// SPDX-License-Identifier: MIT OR Apache-2.0
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//
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// Copyright (c) 2018-2022 Andre Richter <andre.o.richter@gmail.com>
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//! Architectural symmetric multiprocessing.
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//!
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//! # Orientation
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//!
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//! Since arch modules are imported into generic modules using the path attribute, the path of this
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//! file is:
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//!
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//! crate::cpu::smp::arch_smp
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use cortex_a::registers::*;
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use tock_registers::interfaces::Readable;
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//--------------------------------------------------------------------------------------------------
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// Public Code
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//--------------------------------------------------------------------------------------------------
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/// Return the executing core's id.
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#[inline(always)]
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pub fn core_id<T>() -> T
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where
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T: From<u8>,
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{
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const CORE_MASK: u64 = 0b11;
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T::from((MPIDR_EL1.get() & CORE_MASK) as u8)
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}
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