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//This file contains the kernel's main procedure
#include <Core/common.wtf.h>
#include <Core/multiboot.wtf.h>
#include <Devices/Display/VGATextOutput.class.h>
#include <Devices/Keyboard/PS2Keyboard.class.h>
#include <Devices/Floppy/FloppyDrive.class.h>
#include <Devices/Timer.class.h>
#include <DeviceManager/Disp.ns.h>
#include <DeviceManager/Dev.ns.h>
#include <DeviceManager/Kbd.ns.h>
#include <DeviceManager/Time.ns.h>
#include <VTManager/ScrollableVT.class.h>
#include <VTManager/FileVT.class.h>
#include <MemoryManager/PhysMem.ns.h>
#include <MemoryManager/PageAlloc.ns.h>
#include <MemoryManager/GDT.ns.h>
#include <TaskManager/Task.ns.h>
#include <SyscallManager/IDT.ns.h>
#include <Library/String.class.h>
#include <Library/ByteArray.class.h>
#include <VFS/Part.ns.h>
#include <FileSystems/RamFS/RamFS.class.h>
#include <VFS/FileNode.class.h>
#include <VFS/VFS.ns.h>
#include <VFS/DirectoryNode.class.h>
#include <VFS/TextFile.class.h>
#include <Core/Log.ns.h>
#include <Shell/KernelShell.class.h>
#include <Ressources/Graphics/logo.text.cxd>
extern u32int end; //Placement address
extern "C" void kmain(multiboot_info_t* mbd, u32int magic);
#define INFO(vt) vt->setColor(KVT_FGCOLOR); *vt << " - "; vt->setColor(KVT_LIGHTCOLOR);
#define PROCESSING(vt, m) vt->setColor(KVT_BLECOLOR); *vt << " > "; vt->setColor(KVT_FGCOLOR); *vt << m; \
vt->setCursorCol(60); vt->setColor(KVT_LIGHTCOLOR); *vt << ": ";
#define OK(vt) vt->setColor(KVT_FGCOLOR); *vt << "[ "; vt->setColor(KVT_OKCOLOR); *vt << "OK"; vt->setColor(KVT_FGCOLOR); *vt << " ]\n";
void kmain(multiboot_info_t* mbd, u32int magic) {
DEBUG("Entering kmain.");
if (magic != MULTIBOOT_BOOTLOADER_MAGIC) {
Mem::placementAddress = (u32int)&end; //Setup basic stuff so that PANIC will work
VGATextOutput *vgaout = new VGATextOutput();
Disp::setDisplay(vgaout);
PANIC("Error with multiboot header.");
}
//Setup placement address so that we can use new without overwriting modules
Mem::placementAddress = (u32int)&end;
mbd->cmdline += 0xC0000000; mbd->mods_addr += 0xC0000000; //Take stuff into acount
module_t *mods = (module_t*)mbd->mods_addr;
for (u32int i = 0; i < mbd->mods_count; i++) {
mods[i].mod_start += 0xC0000000;
mods[i].mod_end += 0xC0000000;
if (mods[i].mod_end > Mem::placementAddress)
Mem::placementAddress = mods[i].mod_end + 0x1000;
}
//Create text output
VGATextOutput *vgaout = new VGATextOutput();
Disp::setDisplay(vgaout);
//Create a VT for handling the Melon bootup logo
SimpleVT *melonLogoVT = new SimpleVT(melonLogoLines, melonLogoCols, TXTLOGO_FGCOLOR, TXTLOGO_BGCOLOR);
for (int i = 0; i < melonLogoLines; i++) {
for (int j = 0; j < melonLogoCols; j++) {
melonLogoVT->putChar(i, j, melonLogo[i][j]);
}
}
melonLogoVT->map(1);
//Create a VT for logging what kernel does
SimpleVT *kvt = new ScrollableVT(3, 69, 10, KVT_FGCOLOR, KVT_BGCOLOR);
kvt->map(15);
INFO(kvt); *kvt << "Lower ram : " << (s32int)mbd->mem_lower << "k, upper : " << (s32int)mbd->mem_upper << "k.\n";
INFO(kvt); *kvt << "Placement address : " << (u32int)Mem::placementAddress << "\n";
PROCESSING(kvt, "Loading IDT...");
IDT::init(); OK(kvt);
PROCESSING(kvt, "Initializing paging...");
u32int totalRam = ((mbd->mem_upper + mbd->mem_lower) * 1024);
PhysMem::initPaging(totalRam); OK(kvt);
INFO(kvt); *kvt << "Total ram : " << (s32int)(totalRam / 1024) << "k (" << (s32int)(totalRam / (1024 * 1024)) << "M).\n";
PROCESSING(kvt, "Initializing real GDT and cleaning page directory...");
GDT::init();
PhysMem::removeTemporaryPages(); OK(kvt);
PROCESSING(kvt, "Creating kernel heap...");
Mem::createHeap(); OK(kvt);
INFO(kvt); *kvt << "Free frames : " << (s32int)PhysMem::free() << "/" << (s32int)PhysMem::total() << "\n";
PROCESSING(kvt,"Initializing PIT...");
Dev::registerDevice(new Timer()); OK(kvt);
PROCESSING(kvt, "Initializing multitasking...");
Task::initialize(String((char*)mbd->cmdline), kvt); OK(kvt);
PROCESSING(kvt, "Mounting first module as ramfs on root directory...");
FileSystem* fs = RamFS::mount((u8int*)mods[0].mod_start, 1024 * 1024, NULL);
DirectoryNode* cwd;
cwd = fs->getRootNode();
VFS::setRootNode(cwd); OK(kvt);
PROCESSING(kvt, "Setting up logs...");
Log::init(KL_STATUS); OK(kvt);
INFO(kvt); *kvt << "Logs are now going to files in /System/Logs/\n";
Dev::registerDevice(vgaout);
Log::log(KL_STATUS, "kmain : Registered textual VGA output");
Dev::registerDevice(new PS2Keyboard()); //Initialize keyboard driver
if (!Kbd::loadKeymap("fr")) Log::log(KL_ERROR, "kmain : could not load french keymap.");
Kbd::setFocus(kvt); //Set focus to virtual terminal
Log::log(KL_STATUS, "kmain : Keyboard set up");
FloppyController::detect();
Log::log(KL_STATUS, "kmain : Floppy drives detected");
asm volatile("sti");
Log::log(KL_STATUS, "kmain : Interrupts enabled.");
new KernelShell(cwd); //No need to save that in a var, it is automatically destroyed anyways
Log::log(KL_STATUS, "kmain : Kernel shell launched");
kvt->unmap();
while (KernelShell::getInstances() > 0) {
Task::currentThread->sleep(100);
}
Log::log(KL_STATUS, "kmain : All kernel shells finished. Halting.");
Sys::halt();
PANIC("END OF KMAIN");
}
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