kernel/fiasco/src/kern/ia32/startup-ia32.cpp

   1 IMPLEMENTATION[ia32,amd64]:
   2
   3 #include <cstdlib>
   4 #include <cstdio>
   5
   6 #include "apic.h"
   7 #include "banner.h"
   8 #include "boot_console.h"
   9 #include "boot_info.h"
  10 #include "config.h"
  11 #include "cpu.h"
  12 #include "dirq.h"
  13 #include "dirq_io_apic.h"
  14 #include "fpu.h"
  15 #include "idt.h"
  16 #include "initcalls.h"
  17 #include "ipi.h"
  18 #include "kernel_console.h"
  19 #include "kernel_task.h"
  20 #include "kip_init.h"
  21 #include "kmem.h"
  22 #include "kmem_alloc.h"
  23 #include "per_cpu_data.h"
  24 #include "per_cpu_data_alloc.h"
  25 #include "pic.h"
  26 #include "static_init.h"
  27 #include "std_macros.h"
  28 #include "thread.h"
  29 #include "timer.h"
  30 #include "utcb_init.h"
  31 #include "vmem_alloc.h"
  32
  33 #include "io_apic.h"
  34
  35 IMPLEMENT FIASCO_INIT FIASCO_NOINLINE
  36 void
  37 Startup::stage1()
  38 {
  39   Boot_info::init();
  40   Config::init();
  41 }
  42
  43 IMPLEMENT FIASCO_INIT FIASCO_NOINLINE
  44 void
  45 Startup::stage2()
  46 {
  47   Banner::init();
  48   Kip_init::init();
  49   Kmem_alloc::init();
  50
  51   // initialize initial page tables (also used for other CPUs later)
  52   Kmem::init_mmu();
  53
  54   // Initialize cpu-local data management and run constructors for CPU 0
  55   Per_cpu_data::init_ctors(Kmem_alloc::allocator());
  56   Per_cpu_data_alloc::alloc(0);
  57   Per_cpu_data::run_ctors(0);
  58
  59   // set frequency in KIP to that of the boot CPU
  60   Kip_init::init_freq(Cpu::cpus.cpu(0));
  61
  62   if (Io_apic::init())
  63     {
  64       Config::apic = true;
  65       Pic::disable_all_save();
  66       Dirq_io_apic::init();
  67
  68       // If we use the IOAPIC, we route our timer IRQ to
  69       // Config::Apic_timer_vector, even with PIT or RTC
  70       enum { Pic_base = 0x20, Pic_irqs = 0x10 };
  71
  72       if (   Config::scheduler_irq_vector >= Pic_base
  73           && Config::scheduler_irq_vector < Pic_base + Pic_irqs)
  74         {
  75           unsigned const pic_pin
  76             = Io_apic::legacy_override(Config::scheduler_irq_vector - Pic_base);
  77           // assume the legacy irqs are routet to IO-APIC 0
  78           Io_apic_entry e = Io_apic::apic(0)->read_entry(pic_pin);
  79           e.vector(Config::Apic_timer_vector);
  80           Io_apic::apic(0)->write_entry(pic_pin, e);
  81           Config::scheduler_irq_vector = Config::Apic_timer_vector;
  82         }
  83     }
  84   else
  85     {
  86       Pic::init();
  87       Dirq_pic_pin::init();
  88     }
  89
  90   Kernel_task::init(); // enables current_mem_space()
  91   Vmem_alloc::init();
  92
  93   // initialize initial TSS, GDT, IDT
  94   Kmem::init_cpu(Cpu::cpus.cpu(0));
  95   Utcb_init::init();
  96   Idt::init();
  97   Fpu::init(0);
  98   Apic::init();
  99   Ipi::cpu(0).init();
 100   Timer::init();
 101   Timer::master_cpu(0);
 102   Apic::check_still_getting_interrupts();
 103 //  Cpu::init_global_features();
 104 }