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