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db6516931d
error: name `SDT` contains a capitalized acronym
--> acpi_tables/src/sdt.rs:27:12
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27 | pub struct SDT {
| ^^^ help: consider making the acronym lowercase, except the initial letter: `Sdt`
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= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
68 lines
1.5 KiB
Rust
68 lines
1.5 KiB
Rust
// Copyright © 2019 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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use vm_memory::ByteValued;
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#[repr(packed)]
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#[derive(Clone, Copy, Default)]
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pub struct Rsdp {
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pub signature: [u8; 8],
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pub checksum: u8,
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pub oem_id: [u8; 6],
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pub revision: u8,
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_rsdt_addr: u32,
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pub length: u32,
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pub xsdt_addr: u64,
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pub extended_checksum: u8,
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_reserved: [u8; 3],
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}
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unsafe impl ByteValued for Rsdp {}
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impl Rsdp {
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pub fn new(oem_id: [u8; 6], xsdt_addr: u64) -> Self {
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let mut rsdp = Rsdp {
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signature: *b"RSD PTR ",
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checksum: 0,
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oem_id,
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revision: 2,
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_rsdt_addr: 0,
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length: std::mem::size_of::<Rsdp>() as u32,
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xsdt_addr,
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extended_checksum: 0,
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_reserved: [0; 3],
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};
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rsdp.checksum = super::generate_checksum(&rsdp.as_slice()[0..19]);
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rsdp.extended_checksum = super::generate_checksum(&rsdp.as_slice());
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rsdp
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}
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pub fn len() -> usize {
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std::mem::size_of::<Rsdp>()
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}
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}
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#[cfg(test)]
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mod tests {
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use super::Rsdp;
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use vm_memory::bytes::ByteValued;
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#[test]
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fn test_rsdp() {
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let rsdp = Rsdp::new(*b"CHYPER", 0xdead_beef);
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let sum = rsdp
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.as_slice()
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.iter()
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.fold(0u8, |acc, x| acc.wrapping_add(*x));
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assert_eq!(sum, 0);
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let sum: u8 = rsdp
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.as_slice()
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.iter()
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.fold(0u8, |acc, x| acc.wrapping_add(*x));
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assert_eq!(sum, 0);
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}
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}
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