forked from Bananymous/banan-os
107 lines
2.1 KiB
C++
107 lines
2.1 KiB
C++
#include <kernel/Debug.h>
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#include <kernel/IDT.h>
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#include <kernel/Input.h>
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#include <kernel/InterruptController.h>
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#include <kernel/kmalloc.h>
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#include <kernel/kprint.h>
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#include <kernel/MMU.h>
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#include <kernel/multiboot.h>
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#include <kernel/PIC.h>
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#include <kernel/PIT.h>
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#include <kernel/Serial.h>
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#include <kernel/Shell.h>
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#include <kernel/TTY.h>
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#include <kernel/VesaTerminalDriver.h>
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#define DISABLE_INTERRUPTS() asm volatile("cli")
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#define ENABLE_INTERRUPTS() asm volatile("sti")
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extern "C" const char g_kernel_cmdline[];
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using namespace BAN;
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struct ParsedCommandLine
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{
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bool force_pic = false;
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bool disable_serial = false;
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};
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ParsedCommandLine ParseCommandLine()
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{
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ParsedCommandLine result;
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if (!(g_multiboot_info->flags & 0x02))
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return result;
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const char* start = g_kernel_cmdline;
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const char* current = g_kernel_cmdline;
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while (true)
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{
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if (!*current || *current == ' ' || *current == '\t')
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{
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if (current - start == 6 && memcmp(start, "noapic", 6) == 0)
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result.force_pic = true;
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if (current - start == 8 && memcmp(start, "noserial", 8) == 0)
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result.disable_serial = true;
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if (!*current)
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break;
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start = current + 1;
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}
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current++;
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}
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return result;
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}
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extern "C" void kernel_main()
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{
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DISABLE_INTERRUPTS();
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auto cmdline = ParseCommandLine();
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if (!cmdline.disable_serial)
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Serial::Initialize();
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if (g_multiboot_magic != 0x2BADB002)
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{
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dprintln("Invalid multiboot magic number");
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return;
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}
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dprintln("Serial output initialized");
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kmalloc_initialize();
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dprintln("kmalloc initialized");
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IDT::initialize();
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dprintln("IDT initialized");
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MMU::Intialize();
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dprintln("MMU initialized");
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TerminalDriver* terminal_driver = VesaTerminalDriver::Create();
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ASSERT(terminal_driver);
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dprintln("VESA initialized");
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TTY* tty1 = new TTY(terminal_driver);
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InterruptController::Initialize(cmdline.force_pic);
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dprintln("Interrupt controller initialized");
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PIT::initialize();
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dprintln("PIT initialized");
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if (!Input::initialize())
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return;
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dprintln("8042 initialized");
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ENABLE_INTERRUPTS();
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kprintln("Hello from the kernel!");
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Kernel::Shell shell(tty1);
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shell.Run();
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for (;;)
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{
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asm("hlt");
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}
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} |