1 use system_error::SystemError; 2 3 use crate::{driver::acpi::acpi_manager, kinfo, mm::percpu::PerCpu, smp::cpu::ProcessorId}; 4 5 use super::smp::SMP_BOOT_DATA; 6 7 pub(super) fn early_acpi_boot_init() -> Result<(), SystemError> { 8 // 在这里解析madt，初始化smp boot data 9 10 let platform_info = acpi_manager().platform_info().ok_or(SystemError::ENODEV)?; 11 let processor_info = platform_info.processor_info.ok_or(SystemError::ENODEV)?; 12 13 unsafe { 14 SMP_BOOT_DATA.set_phys_id( 15 ProcessorId::new(0), 16 processor_info.boot_processor.local_apic_id as usize, 17 ); 18 let mut cnt = ProcessorId::new(1); 19 for ap in processor_info.application_processors.iter() { 20 if cnt.data() >= PerCpu::MAX_CPU_NUM { 21 break; 22 } 23 SMP_BOOT_DATA.set_phys_id(cnt, ap.local_apic_id as usize); 24 cnt = ProcessorId::new(cnt.data() + 1); 25 } 26 SMP_BOOT_DATA.set_cpu_count(cnt.data()); 27 SMP_BOOT_DATA.mark_initialized(); 28 } 29 kinfo!( 30 "early_acpi_boot_init: cpu_count: {}\n", 31 SMP_BOOT_DATA.cpu_count() 32 ); 33 34 // todo!("early_acpi_boot_init") 35 return Ok(()); 36 } 37