1 use super::smp::SMP_BOOT_DATA; 2 use crate::{driver::acpi::acpi_manager, mm::percpu::PerCpu, smp::cpu::ProcessorId}; 3 use log::info; 4 use system_error::SystemError; 5 6 pub(super) fn early_acpi_boot_init() -> Result<(), SystemError> { 7 // 在这里解析madt，初始化smp boot data 8 9 let platform_info = acpi_manager().platform_info().ok_or(SystemError::ENODEV)?; 10 let processor_info = platform_info.processor_info.ok_or(SystemError::ENODEV)?; 11 12 unsafe { 13 SMP_BOOT_DATA.set_phys_id( 14 ProcessorId::new(0), 15 processor_info.boot_processor.local_apic_id as usize, 16 ); 17 let mut cnt = ProcessorId::new(1); 18 for ap in processor_info.application_processors.iter() { 19 if cnt.data() >= PerCpu::MAX_CPU_NUM { 20 break; 21 } 22 SMP_BOOT_DATA.set_phys_id(cnt, ap.local_apic_id as usize); 23 cnt = ProcessorId::new(cnt.data() + 1); 24 } 25 SMP_BOOT_DATA.set_cpu_count(cnt.data()); 26 SMP_BOOT_DATA.mark_initialized(); 27 } 28 info!( 29 "early_acpi_boot_init: cpu_count: {}\n", 30 SMP_BOOT_DATA.cpu_count() 31 ); 32 33 // todo!("early_acpi_boot_init") 34 return Ok(()); 35 } 36