Ejemplo n.º 1
0
/*
 * Initial boot sequence.
 */
static
void
boot(void)
{
	/*
	 * The order of these is important!
	 * Don't go changing it without thinking about the consequences.
	 *
	 * Among other things, be aware that console output gets
	 * buffered up at first and does not actually appear until
	 * mainbus_bootstrap() attaches the console device. This can
	 * be remarkably confusing if a bug occurs at this point. So
	 * don't put new code before mainbus_bootstrap if you don't
	 * absolutely have to.
	 *
	 * Also note that the buffer for this is only 1k. If you
	 * overflow it, the system will crash without printing
	 * anything at all. You can make it larger though (it's in
	 * dev/generic/console.c).
	 */

	kprintf("\n");
	kprintf("OS/161 base system version %s\n", BASE_VERSION);
	kprintf("%s", harvard_copyright);
	kprintf("\n");

	kprintf("Galactocalypse's system version %s (%s #%d)\n", 
		GROUP_VERSION, buildconfig, buildversion);
	kprintf("\n");

	/* Early initialization. */
	ram_bootstrap();
	thread_bootstrap();
	hardclock_bootstrap();
	vfs_bootstrap();

	/* Probe and initialize devices. Interrupts should come on. */
	kprintf("Device probe...\n");
	KASSERT(curthread->t_curspl > 0);
	mainbus_bootstrap();
	KASSERT(curthread->t_curspl == 0);
	/* Now do pseudo-devices. */
	pseudoconfig();
	kprintf("\n");

	/* Late phase of initialization. */
	vm_bootstrap();
	kprintf_bootstrap();
	thread_start_cpus();

	/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
	vfs_setbootfs("emu0");


	/*
	 * Make sure various things aren't screwed up.
	 */
	COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
	COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
}
Ejemplo n.º 2
0
/*
 * Initial boot sequence.
 */
static
void
boot(void)
{
	/*
	 * The order of these is important!
	 * Don't go changing it without thinking about the consequences.
	 *
	 * Among other things, be aware that console output gets
	 * buffered up at first and does not actually appear until
	 * dev_bootstrap() attaches the console device. This can be
	 * remarkably confusing if a bug occurs at this point. So
	 * don't put new code before dev_bootstrap if you don't
	 * absolutely have to.
	 *
	 * Also note that the buffer for this is only 1k. If you
	 * overflow it, the system will crash without printing
	 * anything at all. You can make it larger though (it's in
	 * dev/generic/console.c).
	 */

	kprintf("\n");
	kprintf("OS/161 base system version %s\n", BASE_VERSION);
	kprintf("%s", harvard_copyright);
	kprintf("\n");

	kprintf("CS350-036's system version %s (%s #%d)\n", 
		GROUP_VERSION, buildconfig, buildversion);
	kprintf("\n");
	#if OPT_A0
   	hello();
	#endif /* OPT_A0 */
	ram_bootstrap();
	scheduler_bootstrap();
	thread_bootstrap();
	vfs_bootstrap();
	dev_bootstrap();
#if OPT_A3   
        vmstats_init();

#endif
	vm_bootstrap();
	kprintf_bootstrap();

	/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
	vfs_setbootfs("emu0");
#if OPT_A3   

        initSwapOps();

#endif

	/*
	 * Make sure various things aren't screwed up.
	 */
	assert(sizeof(userptr_t)==sizeof(char *));
	assert(sizeof(*(userptr_t)0)==sizeof(char));
}
Ejemplo n.º 3
0
void platform_init(int argc, char **argv, char **envp, unsigned memsize) {
  /* clear BSS section */
  bzero(__bss, __ebss - __bss);

  setup_kenv(argc, argv, envp);

  uart_init();
  pcpu_init();
  cpu_init();
  tlb_init();
  intr_init();
  pm_bootstrap(memsize);
  thread_bootstrap();

  kprintf("[startup] Switching to 'kernel-main' thread...\n");
}
Ejemplo n.º 4
0
/**
 * arm_init
 *
 * Initialize the core ARM subsystems, this routine is called from the
 * boot loader. A basic identity mapping is created in __start, however,
 * arm_vm_init will create new mappings.
 */
void arm_init(boot_args* args) {
    cpu_data_t*     bootProcessorData;
    processor_t     bootProcessor;
    uint32_t        baMaxMem;
    uint64_t        maxMem;
    thread_t        thread;

    /*
     * Welcome to arm_init, may I take your order?
     */
    PE_early_puts("arm_init: starting up\n");
    
    /*
     * arm_init is only called on processor #0, the others will enter using arm_slave_init.
     */
    bootProcessor = cpu_processor_alloc(TRUE);
    if(!bootProcessor) {
        panic("Something really wacky happened here with cpu_processor_alloc\n");
    }
    
    /*
     * Pin the processor information to CPU #0.
     */
    PE_early_puts("arm_init: calling cpu_bootstrap\n");
    cpu_bootstrap();
    
    /*
     * Initialize core processor data.
     */
    bootProcessorData = current_cpu_datap();
    
    bootProcessorData->cpu_number = 0;
    bootProcessorData->cpu_active_stack = &irqstack;
    bootProcessorData->cpu_phys_number = 0;
    bootProcessorData->cpu_preemption_level = 1;
    bootProcessorData->cpu_interrupt_level = 0;
    bootProcessorData->cpu_running = 1;
    
    /*
     * Initialize the core thread subsystem (This sets up a template
     * which will then be used to initialize the rest of the thread
     * system later.)
     *
     * Additionally, this also sets the current kernel thread register
     * to our bootstrap thread.
     */
    PE_early_puts("arm_init: calling thread_bootstrap\n");
    thread_bootstrap();

    /*
     * CPU initialization.
     */
    PE_early_puts("arm_init: calling cpu_init\n");
    cpu_init();
    
    /*
     * Mach processor bootstrap.
     */
    PE_early_puts("arm_init: calling processor_bootstrap\n");
    processor_bootstrap();

    /*
     * Initialize the ARM platform expert.
     */
    PE_early_puts("arm_init: calling PE_init_platform\n");
    PE_init_platform(FALSE, (void*)args);
    
    /*
     * Initialize kprintf, but no VM is running yet.
     */
    PE_init_kprintf(FALSE);
    
    /*
     * Set maximum memory size based on boot-args.
     */
    if(!PE_parse_boot_argn("maxmem", &baMaxMem, sizeof(baMaxMem)))
        maxMem = 0;
    else
        maxMem = (uint64_t)baMaxMem * (1024 * 1024);
    
    /*
     * After this, we'll no longer be using physical mappings created by the bootloader.
     */
    arm_vm_init(maxMem, args);

    /*
     * Kernel early bootstrap.
     */
    kernel_early_bootstrap();
    
    /*
     * PE platform init.
     */
    PE_init_platform(TRUE, (void*)args);

    /*
     * Enable I+D cache.
     */
    char tempbuf[16];
    
    if(PE_parse_boot_argn("-no-cache", tempbuf, sizeof(tempbuf))) {
        kprintf("cache: No caching enabled (I+D).\n");
    } else {
        kprintf("cache: initializing i+dcache\n");
        cache_initialize();
        kprintf("cache: done\n");
    }

    /*
     * Start system timers.
     */
    thread = current_thread();
    thread->machine.preempt_count = 1;
    thread->machine.cpu_data = cpu_datap(cpu_number());
    thread->kernel_stack = irqstack;
    timer_start(&thread->system_timer, mach_absolute_time());
    
    /*
     * VFP/float initialization.
     */
    init_vfp();
    
    /*
     * Machine startup.
     */
    machine_startup();
    
    /*
     * If anything returns, bad things(tm) have happened.
     */
    PE_early_puts("arm_init: Still alive\n");
    panic("why are we still here, NOO");
    while(1);
}
Ejemplo n.º 5
0
/**
 * arm_init
 *
 * Initialize the core ARM subsystems, this routine is called from the
 * boot loader. A basic identity mapping is created in __start, however,
 * arm_vm_init will create new mappings.
 */
void arm_init(boot_args * args)
{
    cpu_data_t *bootProcessorData;
    processor_t bootProcessor;
    uint32_t baMaxMem;
    uint64_t maxMem;
    thread_t thread;

    /*
     * We are in. 
     */
    PE_early_puts("arm_init: starting up\n");

    /*
     * arm_init is only called on processor #0, the others will enter using arm_slave_init. 
     */
    bootProcessor = cpu_processor_alloc(TRUE);
    if (!bootProcessor) {
        panic("cpu_processor_alloc failed\n");
    }

    /*
     * Pin the processor information to CPU #0. 
     */
    PE_early_puts("arm_init: calling cpu_bootstrap\n");
    cpu_bootstrap();

    /*
     * Initialize core processor data. 
     */
    bootProcessorData = current_cpu_datap();

    bootProcessorData->cpu_number = 0;
    bootProcessorData->cpu_active_stack = (vm_offset_t)&irqstack;
    bootProcessorData->cpu_phys_number = 0;
    bootProcessorData->cpu_preemption_level = 1;
    bootProcessorData->cpu_interrupt_level = 0;
    bootProcessorData->cpu_running = 1;
    bootProcessorData->cpu_pending_ast = AST_NONE;

    /*
     * Initialize the core thread subsystem (This sets up a template
     * which will then be used to initialize the rest of the thread
     * system later.)
     *
     * Additionally, this also sets the current kernel thread register
     * to our bootstrap thread.
     */
    PE_early_puts("arm_init: calling thread_bootstrap\n");
    thread_bootstrap();

    /*
     * CPU initialization. 
     */
    PE_early_puts("arm_init: calling cpu_init\n");
    cpu_init();

    /*
     * Mach processor bootstrap. 
     */
    PE_early_puts("arm_init: calling processor_bootstrap\n");
    processor_bootstrap();

    /*
     * Initialize the ARM platform expert. 
     */
    PE_early_puts("arm_init: calling PE_init_platform\n");
    PE_init_platform(FALSE, (void *) args);

    /*
     * Initialize kprintf, but no VM is running yet. 
     */
    PE_init_kprintf(FALSE);

    /*
     * Set maximum memory size based on boot-args. 
     */
    if (!PE_parse_boot_argn("maxmem", &baMaxMem, sizeof(baMaxMem)))
        maxMem = 0;
    else
        maxMem = (uint64_t) baMaxMem *(1024 * 1024);

    /*
     * After this, we'll no longer be using physical mappings created by the bootloader. 
     */
    arm_vm_init(maxMem, args);

    /*
     * Kernel early bootstrap. 
     */
    kernel_early_bootstrap();

    /*
     * PE platform init. 
     */
    PE_init_platform(TRUE, (void *) args);

    /*
     * Enable I+D cache. 
     */
    char tempbuf[16];

    if (PE_parse_boot_argn("-no-cache", tempbuf, sizeof(tempbuf))) {
        kprintf("cache: No caching enabled (I+D).\n");
    } else {
        kprintf("cache: initializing i+dcache ... ");
        cache_initialize();
        kprintf("done\n");
    }

    /*
     * Specify serial mode. 
     */
    serialmode = 0;
    if (PE_parse_boot_argn("serial", &serialmode, sizeof(serialmode))) {
        /*
         * We want a serial keyboard and/or console 
         */
        kprintf("Serial mode specified: %08X\n", serialmode);
    }

    if (serialmode & 1) {
        (void) switch_to_serial_console();
        disableConsoleOutput = FALSE;   /* Allow printfs to happen */
    }

    /*
     * Start system timers. 
     */
    thread = current_thread();
    thread->machine.preempt_count = 1;
    thread->machine.cpu_data = cpu_datap(cpu_number());
    thread->kernel_stack = irqstack;
    timer_start(&thread->system_timer, mach_absolute_time());

    /*
     * Processor identification.
     */
    arm_processor_identify();

    /*
     * VFP/float initialization. 
     */
    init_vfp();

    /*
     * Machine startup. 
     */
    machine_startup();

    /*
     * If we return, something very bad is happening. 
     */
    panic("20:02:14 <DHowett> wwwwwwwat is HAAAAAAAPPENING\n");

    /*
     * Last chance. 
     */
    while (1) ;
}
Ejemplo n.º 6
0
/*
 * Initial boot sequence.
 */
static
void
boot(void)
{
	/*
	 * The order of these is important!
	 * Don't go changing it without thinking about the consequences.
	 *
	 * Among other things, be aware that console output gets
	 * buffered up at first and does not actually appear until
	 * mainbus_bootstrap() attaches the console device. This can
	 * be remarkably confusing if a bug occurs at this point. So
	 * don't put new code before mainbus_bootstrap if you don't
	 * absolutely have to.
	 *
	 * Also note that the buffer for this is only 1k. If you
	 * overflow it, the system will crash without printing
	 * anything at all. You can make it larger though (it's in
	 * dev/generic/console.c).
	 */

#if OPT_A2
  // Not sure if this is the best place to put this, but I'm not
  // sure where else we can initialize our process array early enough
  proc_array_init();

  // Setting this to NULL to start so that boot threads don't increment
  // the value
  sem_runprogram = NULL;
#endif

	kprintf("\n");
	kprintf("OS/161 base system version %s\n", BASE_VERSION);
	kprintf("%s", harvard_copyright);
	kprintf("\n");

	kprintf("Put-your-group-name-here's system version %s (%s #%d)\n",
		GROUP_VERSION, buildconfig, buildversion);
	kprintf("\n");


	/* Early initialization. */
	ram_bootstrap();
	proc_bootstrap();
	thread_bootstrap();
	hardclock_bootstrap();
	vfs_bootstrap();
	#if OPT_A3
	// vm_bootstrap();// already called elsewhere below
	#endif

	/* Probe and initialize devices. Interrupts should come on. */
	kprintf("Device probe...\n");
	KASSERT(curthread->t_curspl > 0);
	mainbus_bootstrap();
	KASSERT(curthread->t_curspl == 0);
	/* Now do pseudo-devices. */
	pseudoconfig();
	kprintf("\n");

	/* Late phase of initialization. */
	vm_bootstrap();
	kprintf_bootstrap();
	thread_start_cpus();

	/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
	vfs_setbootfs("emu0");

	/*
	 * Make sure various things aren't screwed up.
	 */
	COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
	COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));

#if OPT_A2
  // Now it is safe to let this be accessed
  sem_runprogram = sem_create("sem_runprogram", 0);
#endif
}
Ejemplo n.º 7
0
/*
 * Initial boot sequence.
 */
static
void
boot(void)
{
	/*
	 * The order of these is important!
	 * Don't go changing it without thinking about the consequences.
	 *
	 * Among other things, be aware that console output gets
	 * buffered up at first and does not actually appear until
	 * dev_bootstrap() attaches the console device. This can be
	 * remarkably confusing if a bug occurs at this point. So
	 * don't put new code before dev_bootstrap if you don't
	 * absolutely have to.
	 *
	 * Also note that the buffer for this is only 1k. If you
	 * overflow it, the system will crash without printing
	 * anything at all. You can make it larger though (it's in
	 * dev/generic/console.c).
	 */

  /* remove compiler warning */
        //size_t memsize; /* ASST2: get memsize from new vm_bootstrap */

	kprintf("\n");
	kprintf("OS/161 base system version %s\n", BASE_VERSION);
	kprintf("%s", harvard_copyright);
	kprintf("\n");

	kprintf("Group 36 system version %s (%s #%d)\n", 
		GROUP_VERSION, buildconfig, buildversion);
	kprintf("\n");

	ram_bootstrap();
#if OPT_DUMBVM
	vm_bootstrap();
#else
	memsize = vm_bootstrap(); /* ASST2: get memsize from new vm_bootstrap */
#endif
	scheduler_bootstrap();
	pid_bootstrap(); /* ASST1: initialize pid management before threads */
	thread_bootstrap();
	vfs_bootstrap();
	dev_bootstrap();
#if !OPT_DUMBVM /* only initialize swap if not using dumbvm */
        swap_bootstrap(memsize); /* ASST2: initialize swap file after devices */
#endif
	kprintf_bootstrap();

	// DEMKE: ASST1 - initialize user program console I/O
	//dumb_consoleIO_bootstrap();

	/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
	vfs_setbootfs("emu0");


	/*
	 * Make sure various things aren't screwed up.
	 */
	assert(sizeof(userptr_t)==sizeof(char *));
	assert(sizeof(*(userptr_t)0)==sizeof(char));
}
Ejemplo n.º 8
0
/*
 * Initial boot sequence.
 */
static
void
boot(void)
{
	/*
	 * The order of these is important!
	 * Don't go changing it without thinking about the consequences.
	 *
	 * Among other things, be aware that console output gets
	 * buffered up at first and does not actually appear until
	 * mainbus_bootstrap() attaches the console device. This can
	 * be remarkably confusing if a bug occurs at this point. So
	 * don't put new code before mainbus_bootstrap if you don't
	 * absolutely have to.
	 *
	 * Also note that the buffer for this is only 1k. If you
	 * overflow it, the system will crash without printing
	 * anything at all. You can make it larger though (it's in
	 * dev/generic/console.c).
	 */

	kprintf("\n");
	kprintf("OS/161 base system version %s\n", BASE_VERSION);
	kprintf("%s", harvard_copyright);
	kprintf("\n");

    // Stupid escape characters
/*    kprintf("                       ,8\\\n"\
            "=DDI~                 ,88M\n"\
            "`$D888$7~            ,D=8M\n"\
            "  8N8...'8.          +...7\n"\
            "   ~+D+...'8,       ,N...7\n"\
            "     ~+N+...+----...7...8`\n"\
            "        ~~O.............7\n"\
            "         /.............7\n"\
            "        8..88..........7\n"\
            "       8##.........88..:\n"\
            "      .8##...####$.....#  ~+',\n"\
            "       \\I...####$...###8...,+\n"\
            "      .~~~~,.7##7....##.....7\n"\
            "    /.......\\-......7....I..+I8DI~..\n"\
            "   |8........7-.....\\..+$...........O\\\n");*/
    /*kprintf("    \\~.___.~7-.......?IZ$??+..........>\n"\
            "      \\.............D  /=?????+....,8`\n"\
            "      I.............+~IO=?8:+ZDI?=8`\n"\
            "     /..............7$??+8     \\8/\n"\
            "    I...............8DZO,\n"\
            "    I................N8?\n"\
            "   .D??.......+++....8\n"\
            "    D?7???I$Z77??????.\n"\
            "  ,8$DDZ:    ``~?NIMMIZ=\n"\
            "                   `~I8?\n");*/


    kprintf("PikachuOS's system version %s (%s #%d)\n",
		GROUP_VERSION, buildconfig, buildversion);
	kprintf("\n");

	/* Early initialization. */
	ram_bootstrap();
	vm_bootstrap();
	proc_bootstrap();
	thread_bootstrap();
	hardclock_bootstrap();
	vfs_bootstrap();
	kheap_nextgeneration();

	/* Probe and initialize devices. Interrupts should come on. */
	kprintf("Device probe...\n");
	KASSERT(curthread->t_curspl > 0);
	mainbus_bootstrap();
	KASSERT(curthread->t_curspl == 0);
	/* Now do pseudo-devices. */
	pseudoconfig();
	kprintf("\n");
	kheap_nextgeneration();

	/* Late phase of initialization. */
	kprintf_bootstrap();
	thread_start_cpus();

	/* Buffer cache */
	buffer_bootstrap();

	/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
	vfs_setbootfs("emu0");

	kheap_nextgeneration();
	bs_bootstrap();

	/*
	 * Make sure various things aren't screwed up.
	 */
	COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
	COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
}