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Make CPU-local and early ACPI initialization heap-less

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This commit is contained in:
Zhang Junyang
2025-01-08 20:27:45 +08:00
committed by Tate, Hongliang Tian
parent 7496b24da1
commit 92bc8cbbf7
17 changed files with 188 additions and 157 deletions
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24
ostd/src/arch/x86/boot/smp.rs
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@ -27,11 +27,9 @@
//! This sequence does not need to be strictly followed, and there may be
//! different considerations in different systems.
use acpi::platform::PlatformInfo;
use crate::{
arch::x86::kernel::{
acpi::ACPI_TABLES,
acpi::get_acpi_tables,
apic::{
self, ApicId, DeliveryMode, DeliveryStatus, DestinationMode, DestinationShorthand, Icr,
Level, TriggerMode,
@ -44,14 +42,20 @@ use crate::{
///
/// This function needs to be called after the OS initializes the ACPI table.
pub(crate) fn get_num_processors() -> Option<u32> {
if !ACPI_TABLES.is_completed() {
return None;
}
let processor_info = PlatformInfo::new(&*ACPI_TABLES.get().unwrap().lock())
let acpi_tables = get_acpi_tables()?;
let mut local_apic_counts = 0;
acpi_tables
.find_table::<acpi::madt::Madt>()
.unwrap()
.processor_info
.unwrap();
Some(processor_info.application_processors.len() as u32 + 1)
.get()
.entries()
.for_each(|entry| {
if let acpi::madt::MadtEntry::LocalApic(_) = entry {
local_apic_counts += 1;
}
});
Some(local_apic_counts)
}
/// Brings up all application processors.