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 "kernel_uart.h"
  22 #include "kmem.h"
  23 #include "kmem_alloc.h"
  24 #include "per_cpu_data.h"
  25 #include "per_cpu_data_alloc.h"
  26 #include "pic.h"
  27 #include "static_init.h"
  28 #include "std_macros.h"
  29 #include "thread.h"
  30 #include "timer.h"
  31 #include "utcb_init.h"
  32 #include "vmem_alloc.h"
  33
  34 #include "io_apic.h"
  35
  36 IMPLEMENT FIASCO_INIT FIASCO_NOINLINE
  37 void
  38 Startup::stage1()
  39 {
  40   Boot_info::init();
  41   Config::init();
  42   if (Kernel_uart::init(Kernel_uart::Init_before_mmu))
  43     Banner::init();
  44 }
  45
  46 IMPLEMENT FIASCO_INIT FIASCO_NOINLINE
  47 void
  48 Startup::stage2()
  49 {
  50   Kip_init::init();
  51   Kmem_alloc::init();
  52
  53   // initialize initial page tables (also used for other CPUs later)
  54   Kmem::init_mmu();
  55
  56   if (Kernel_uart::init(Kernel_uart::Init_after_mmu))
  57     Banner::init();
  58
  59   // Initialize cpu-local data management and run constructors for CPU 0
  60   Per_cpu_data::init_ctors(Kmem_alloc::allocator());
  61   Per_cpu_data_alloc::alloc(0);
  62   Per_cpu_data::run_ctors(0);
  63
  64   // set frequency in KIP to that of the boot CPU
  65   Kip_init::init_freq(Cpu::cpus.cpu(0));
  66
  67   bool use_io_apic = Io_apic::init();
  68   if (use_io_apic)
  69     {
  70       Config::apic = true;
  71       Pic::disable_all_save();
  72       Dirq_io_apic::init();
  73     }
  74   else
  75     {
  76       Pic::init();
  77       Dirq_pic_pin::init();
  78     }
  79
  80   Kernel_task::init(); // enables current_mem_space()
  81   Vmem_alloc::init();
  82
  83   // initialize initial TSS, GDT, IDT
  84   Kmem::init_cpu(Cpu::cpus.cpu(0));
  85   Utcb_init::init();
  86   Idt::init();
  87   Fpu::init(0);
  88   Apic::init();
  89   Ipi::cpu(0).init();
  90   Timer::init();
  91   int timer_irq = Timer::irq_line();
  92   if (use_io_apic)
  93     {
  94       // If we use the IOAPIC, we route our timer IRQ to
  95       // Config::Apic_timer_vector, even with PIT or RTC
  96       Config::scheduler_irq_vector = Config::Apic_timer_vector;
  97
  98       if (timer_irq >= 0)
  99         {
 100           unsigned const pic_pin = Io_apic::legacy_override(timer_irq);
 101           // assume the legacy irqs are routet to IO-APIC 0
 102           Io_apic_entry e = Io_apic::apic(0)->read_entry(pic_pin);
 103           e.vector(Config::Apic_timer_vector);
 104           Io_apic::apic(0)->write_entry(pic_pin, e);
 105         }
 106     }
 107   else
 108     {
 109       if (timer_irq >= 0)
 110         Config::scheduler_irq_vector = 0x20 + timer_irq;
 111       else
 112         Config::scheduler_irq_vector = Config::Apic_timer_vector;
 113     }
 114
 115   Idt::set_vectors_run();
 116   Timer::master_cpu(0);
 117   Apic::check_still_getting_interrupts();
 118 //  Cpu::init_global_features();
 119 }