1 use system_error::SystemError; 2 3 use crate::{driver::acpi::acpi_manager, kinfo, mm::percpu::PerCpu}; 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(0, processor_info.boot_processor.local_apic_id as usize); 15 let mut cnt = 1; 16 for ap in processor_info.application_processors.iter() { 17 if cnt >= PerCpu::MAX_CPU_NUM { 18 break; 19 } 20 SMP_BOOT_DATA.set_phys_id(cnt, ap.local_apic_id as usize); 21 cnt += 1; 22 } 23 SMP_BOOT_DATA.set_cpu_count(cnt); 24 SMP_BOOT_DATA.mark_initialized(); 25 } 26 kinfo!( 27 "early_acpi_boot_init: cpu_count: {}\n", 28 SMP_BOOT_DATA.cpu_count() 29 ); 30 31 // todo!("early_acpi_boot_init") 32 return Ok(()); 33 } 34