19 lines
635 B
Rust
19 lines
635 B
Rust
use super::{ACPISDTHeader,ACPISDTIter};
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static mut RSDT: Option<*const ACPISDTHeader> = None;
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/// ## Initialize Root System Description Table (RSDT)
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/// input param addr is contain in RSDP
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pub fn init(addr: u32) -> Result <(), &'static str> {
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if ACPISDTHeader::valid(addr, "RSDT") {
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unsafe {RSDT = Some(addr as *const ACPISDTHeader)};
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return Ok(());
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}
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return Err("Can not find Root System Description Table (RSDT).");
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}
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/// Return a iterable of ptr contained in RSDT
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/// RSDT must have been initialized first
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pub fn iter() -> Result <ACPISDTIter, &'static str> {
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ACPISDTIter::new(unsafe {RSDT}, 4)
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}
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