root/Whitix/trunk/kernel/startup.c

#include <fs/vfs.h>
#include <module.h>
#include <panic.h>
#include <sched.h>
#include <typedefs.h>
#include <sections.h>
#include <task.h>
#include <print.h>
#include <addresses.h>
#include <fs/devfs.h>

static void KernelFreeSections()
{
        DWORD addr;

        KePrint(KERN_INFO "KERN: Freeing startup sections of kernel\n");

        for (addr = (DWORD)initcode_start; addr < (DWORD)initcode_end; addr+=PAGE_SIZE)
                PageFreeAddr(VA_TO_PA(addr));
        
        for (addr = (DWORD)initdata_start; addr < (DWORD)initdata_end; addr+=PAGE_SIZE)
                PageFreeAddr(VA_TO_PA(addr));
}

void Start()
{
        int fds[]={
                0, 0, 0,
        };

        ModulesBootLoad();
        
        extern void StorageMountRoot();
        StorageMountRoot();
        
        KernelFreeSections();
        
        KePrint("DEVFS: Mounting device filesystem at %s\n", DEVICES_PATH);

        if (VfsMount(NULL, DEVICES_PATH, "DevFs", NULL))
                KernelPanic("Failed to mount the device filesystem");

        KePrint(KERN_INFO "Kernel initialization complete. Running 'startup'.\n");

        current->files[0] = FileAllocate();

        if (DoOpenFile(current->files[0], DEVICES_PATH "Consoles/Console0",FILE_READ | FILE_FORCE_OPEN,0))
                KernelPanic("Failed to open the first console. Halting");

        extern int Exec(char* pathName,int* fds,char** argv);
        if (Exec("/System/Startup/startup", fds, NULL) < 0)
                KernelPanic("Could not launch the startup program. Halting");

        ThrProcessExit(0);
        ThrSchedule();

        /* Shouldn't hit here. */
        while (1)
                hlt();
}

int StartInit()
{
        struct Process* start;
        struct Thread* firstThread;

        start=ThrCreateProcess("KernelLoading");
        firstThread=ThrCreateThread(start, (DWORD)Start, false, 0, NULL);

        if (!start || !firstThread)
                KernelPanic("Could not create the starting thread.\n");

        ThrStartThread(firstThread);

        return 0;
}