Ejemplo n.º 1
0
int __init main()
{
    /* keep the calling order below because of dependencies */
    sys_init();
    mm_init();
    fs_init();
    device_init();
    systick_init();
    scheduler_init();
    console_init();

    make_init_task();
    load_user_task(); /* that are registered statically */

    softirq_init();
#ifdef CONFIG_TIMER
    timer_init();
#endif

#ifndef DEFSTR
#define DEFMKSTR(x)	#x
#define DEFSTR(x)	DEFMKSTR(x)
#endif
    /* a banner */
    printk("yaos %s %s\n", DEFSTR(VERSION), DEFSTR(MACHINE));

    /* switch from boot stack memory to new one */
    set_user_sp(init.mm.sp);
    set_kernel_sp(init.mm.kernel.sp);

    /* everything ready now */
#ifndef ARMv7A
    sei();
#endif
    resched();

    /* it doesn't really reach up to this point. init task becomes idle as
     * its context is already set to idle */
    __context_restore(current);
    __ret_from_exc(0);
    freeze();

    return 0;
}
Ejemplo n.º 2
0
asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern struct kernel_param __start___param[], __stop___param[];

	smp_setup_processor_id();

	/*
	 * Need to run as early as possible, to initialize the
	 * lockdep hash:
	 */
	lockdep_init();
	debug_objects_early_init();

	/*
	 * Set up the the initial canary ASAP:
	 */
	boot_init_stack_canary();

	cgroup_init_early();

	local_irq_disable();
	early_boot_irqs_off();
	early_init_irq_lock_class();

/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	tick_init();
	boot_cpu_init();
	page_address_init();
	printk(KERN_NOTICE "%s", linux_banner);
	setup_arch(&command_line);
	mm_init_owner(&init_mm, &init_task);
	setup_command_line(command_line);
	setup_nr_cpu_ids();
	setup_per_cpu_areas();
	smp_prepare_boot_cpu();	/* arch-specific boot-cpu hooks */

	build_all_zonelists(NULL);
	page_alloc_init();

	printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);

//[email protected] 2011.11.14 begin
//support lcd compatible
//reviewed by [email protected]
#if defined(CONFIG_LCD_DRV_ALL)
	char *p = strstr(boot_command_line, "lcd=");
	if (p)
	{
		lcd_drv_index = p[4] - 'A';
		printk("lcd index = %d", lcd_drv_index);
	}
#endif
//[email protected] 2011.11.14 end

	parse_early_param();
	parse_args("Booting kernel", static_command_line, __start___param,
		   __stop___param - __start___param,
		   &unknown_bootoption);
	/*
	 * These use large bootmem allocations and must precede
	 * kmem_cache_init()
	 */
	pidhash_init();
	vfs_caches_init_early();
	sort_main_extable();
	trap_init();
	mm_init();
	/*
	 * Set up the scheduler prior starting any interrupts (such as the
	 * timer interrupt). Full topology setup happens at smp_init()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * fragile until we cpu_idle() for the first time.
	 */
	preempt_disable();
	if (!irqs_disabled()) {
		printk(KERN_WARNING "start_kernel(): bug: interrupts were "
				"enabled *very* early, fixing it\n");
		local_irq_disable();
	}
	rcu_init();
	radix_tree_init();
	/* init some links before init_ISA_irqs() */
	early_irq_init();
	init_IRQ();
	prio_tree_init();
	init_timers();
	hrtimers_init();
	softirq_init();
	timekeeping_init();
	time_init();
	profile_init();
	if (!irqs_disabled())
		printk(KERN_CRIT "start_kernel(): bug: interrupts were "
				 "enabled early\n");
	early_boot_irqs_on();
	local_irq_enable();

	/* Interrupts are enabled now so all GFP allocations are safe. */
	gfp_allowed_mask = __GFP_BITS_MASK;

	kmem_cache_init_late();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);

	lockdep_info();

	/*
	 * Need to run this when irqs are enabled, because it wants
	 * to self-test [hard/soft]-irqs on/off lock inversion bugs
	 * too:
	 */
	locking_selftest();

#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
	    page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",
		    page_to_pfn(virt_to_page((void *)initrd_start)),
		    min_low_pfn);
		initrd_start = 0;
	}
#endif
	page_cgroup_init();
	enable_debug_pagealloc();
	kmemtrace_init();
	kmemleak_init();
	debug_objects_mem_init();
	idr_init_cache();
	setup_per_cpu_pageset();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	sched_clock_init();
	calibrate_delay();
	pidmap_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	thread_info_cache_init();
	cred_init();
	fork_init(totalram_pages);
	proc_caches_init();
	buffer_init();
	key_init();
	security_init();
	dbg_late_init();
	vfs_caches_init(totalram_pages);
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	cgroup_init();
	cpuset_init();
	taskstats_init_early();
	delayacct_init();

	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */
	sfi_init_late();

	ftrace_init();

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}
Ejemplo n.º 3
0
asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern struct kernel_param __start___param[], __stop___param[];

	smp_setup_processor_id();

	/*
	 * Need to run as early as possible, to initialize the
	 * lockdep hash:
	 */
	unwind_init();
	lockdep_init();

	local_irq_disable();
	early_boot_irqs_off();
	early_init_irq_lock_class();

/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	boot_cpu_init();
	page_address_init();
	printk(KERN_NOTICE);
	printk(linux_banner);
	setup_arch(&command_line);
	setup_per_cpu_areas();
	smp_prepare_boot_cpu();	/* arch-specific boot-cpu hooks */

	/*
	 * Set up the scheduler prior starting any interrupts (such as the
	 * timer interrupt). Full topology setup happens at smp_init()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * fragile until we cpu_idle() for the first time.
	 */
	preempt_disable();
	build_all_zonelists();
	page_alloc_init();
	printk(KERN_NOTICE "Kernel command line: %s\n", saved_command_line);
	parse_early_param();
	parse_args("Booting kernel", command_line, __start___param,
		   __stop___param - __start___param,
		   &unknown_bootoption);
	sort_main_extable();
	trap_init();
	rcu_init();
	init_IRQ();
	pidhash_init();
	init_timers();
	hrtimers_init();
	softirq_init();
	timekeeping_init();
	time_init();
	profile_init();
	if (!irqs_disabled())
		printk("start_kernel(): bug: interrupts were enabled early\n");
	early_boot_irqs_on();
	local_irq_enable();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);

	lockdep_info();

	/*
	 * Need to run this when irqs are enabled, because it wants
	 * to self-test [hard/soft]-irqs on/off lock inversion bugs
	 * too:
	 */
	locking_selftest();

#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
			initrd_start < min_low_pfn << PAGE_SHIFT) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
		initrd_start = 0;
	}
#endif
	vfs_caches_init_early();
	cpuset_init_early();
	mem_init();
	kmem_cache_init();
	setup_per_cpu_pageset();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	calibrate_delay();
	pidmap_init();
	pgtable_cache_init();
	prio_tree_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	fork_init(num_physpages);
	proc_caches_init();
	buffer_init();
	unnamed_dev_init();
	key_init();
	security_init();
	vfs_caches_init(num_physpages);
	radix_tree_init();
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	cpuset_init();
	taskstats_init_early();
	delayacct_init();

	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}
Ejemplo n.º 4
0
asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern char saved_command_line[];

/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	printk(linux_banner);
	setup_arch(&command_line);
	printk("Kernel command line: %s\n", saved_command_line);
	parse_options(command_line);
	trap_init();
	init_IRQ();
	sched_init();
	softirq_init();
	time_init();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
#ifdef CONFIG_MODULES
	init_modules();
#endif
	if (prof_shift) {
		unsigned int size;
		/* only text is profiled */
		prof_len = (unsigned long) &_etext - (unsigned long) &_stext;
		prof_len >>= prof_shift;
		
		size = prof_len * sizeof(unsigned int) + PAGE_SIZE-1;
		prof_buffer = (unsigned int *) alloc_bootmem(size);
	}

	kmem_cache_init();
	sti();
	calibrate_delay();
#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
			initrd_start < min_low_pfn << PAGE_SHIFT) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
		initrd_start = 0;
	}
#endif
	mem_init();
	kmem_cache_sizes_init();
	pgtable_cache_init();

	/*
	 * For architectures that have highmem, num_mappedpages represents
	 * the amount of memory the kernel can use.  For other architectures
	 * it's the same as the total pages.  We need both numbers because
	 * some subsystems need to initialize based on how much memory the
	 * kernel can use.
	 */
	if (num_mappedpages == 0)
		num_mappedpages = num_physpages;
  
	fork_init(num_mappedpages);
	proc_caches_init();
	vfs_caches_init(num_physpages);
	buffer_init(num_physpages);
	page_cache_init(num_physpages);
#if defined(CONFIG_ARCH_S390)
	ccwcache_init();
#endif
	signals_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	check_bugs();
	printk("POSIX conformance testing by UNIFIX\n");

	/* 
	 *	We count on the initial thread going ok 
	 *	Like idlers init is an unlocked kernel thread, which will
	 *	make syscalls (and thus be locked).
	 */
	smp_init();
#if defined(CONFIG_SYSVIPC)
	ipc_init();
#endif
	rest_init();
}
Ejemplo n.º 5
0
asmlinkage void __init start_kernel(void)
{
   char * command_line;
   extern char saved_command_line[];
   extern struct kernel_param __start___param[], __stop___param[];

#ifdef TARGET_OS2
   LX_set_sysstate(LXSYSSTATE_KERNEL_BOOT_STARTED,0);
#endif
/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
   lock_kernel();
   page_address_init();
   printk(linux_banner);
   setup_arch(&command_line);
   setup_per_cpu_areas();

   /*
    * Mark the boot cpu "online" so that it can call console drivers in
    * printk() and can access its per-cpu storage.
    */
   smp_prepare_boot_cpu();

   build_all_zonelists();
   page_alloc_init();
   printk("Kernel command line: %s\n", saved_command_line);
   #ifdef TARGET_OS2
   parse_args("Booting kernel", command_line, __start___param,
         0,
         &unknown_bootoption);
   #else
   parse_args("Booting kernel", command_line, __start___param,
         __stop___param - __start___param,
         &unknown_bootoption);
   #endif
   sort_main_extable();
   trap_init();
   rcu_init();
   init_IRQ();
   pidhash_init();
   sched_init();
   softirq_init();
   time_init();

   /*
    * HACK ALERT! This is early. We're enabling the console before
    * we've done PCI setups etc, and console_init() must be aware of
    * this. But we do want output early, in case something goes wrong.
    */
   console_init();
   if (panic_later)
      panic(panic_later, panic_param);
   profile_init();
   local_irq_enable();
#ifdef CONFIG_BLK_DEV_INITRD
   if (initrd_start && !initrd_below_start_ok &&
         initrd_start < min_low_pfn << PAGE_SHIFT) {
      printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
          "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
      initrd_start = 0;
   }
#endif
   mem_init();
   kmem_cache_init();
   if (late_time_init)
      late_time_init();
   calibrate_delay();
   pidmap_init();
   pgtable_cache_init();
   pte_chain_init();
#ifdef CONFIG_X86
   if (efi_enabled)
      efi_enter_virtual_mode();
#endif
   fork_init(num_physpages);
   proc_caches_init();
   buffer_init();
   unnamed_dev_init();
   security_scaffolding_startup();
   vfs_caches_init(num_physpages);
   radix_tree_init();
   signals_init();
   /* rootfs populating might need page-writeback */
   page_writeback_init();
#ifdef CONFIG_PROC_FS
   proc_root_init();
#endif
   check_bugs();
   printk("POSIX conformance testing by UNIFIX\n");
   /*
    * We count on the initial thread going ok
    * Like idlers init is an unlocked kernel thread, which will
    * make syscalls (and thus be locked).
    */
   init_idle(current, smp_processor_id());
   /* Do the rest non-__init'ed, we're now alive */
   rest_init();
}
Ejemplo n.º 6
0
/* C entry point for boot CPU */
void __init start_xen(unsigned long boot_phys_offset,
                      unsigned long fdt_paddr,
                      unsigned long cpuid)
{
    size_t fdt_size;
    int cpus, i;
    const char *cmdline;

    setup_cache();

    percpu_init_areas();
    set_processor_id(0); /* needed early, for smp_processor_id() */

    smp_clear_cpu_maps();

    /* This is mapped by head.S */
    device_tree_flattened = (void *)BOOT_FDT_VIRT_START
        + (fdt_paddr & ((1 << SECOND_SHIFT) - 1));
    fdt_size = device_tree_early_init(device_tree_flattened, fdt_paddr);

    cmdline = device_tree_bootargs(device_tree_flattened);
    early_printk("Command line: %s\n", cmdline);
    cmdline_parse(cmdline);

    setup_pagetables(boot_phys_offset, get_xen_paddr());
    setup_mm(fdt_paddr, fdt_size);

    vm_init();
    dt_unflatten_host_device_tree();
    dt_irq_xlate = gic_irq_xlate;

    dt_uart_init();
    console_init_preirq();

    system_state = SYS_STATE_boot;

    processor_id();

    platform_init();

    smp_init_cpus();
    cpus = smp_get_max_cpus();

    init_xen_time();

    gic_init();

    set_current((struct vcpu *)0xfffff000); /* debug sanity */
    idle_vcpu[0] = current;

    init_traps();

    setup_virt_paging();

    p2m_vmid_allocator_init();

    softirq_init();

    tasklet_subsys_init();

    init_IRQ();

    gic_route_ppis();
    gic_route_spis();

    init_maintenance_interrupt();
    init_timer_interrupt();

    timer_init();

    init_idle_domain();

    rcu_init();

    arch_init_memory();

    local_irq_enable();
    local_abort_enable();

    smp_prepare_cpus(cpus);

    initialize_keytable();

    console_init_postirq();

    do_presmp_initcalls();

    for_each_present_cpu ( i )
    {
        if ( (num_online_cpus() < cpus) && !cpu_online(i) )
        {
            int ret = cpu_up(i);
            if ( ret != 0 )
                printk("Failed to bring up CPU %u (error %d)\n", i, ret);
        }
    }

    printk("Brought up %ld CPUs\n", (long)num_online_cpus());
    /* TODO: smp_cpus_done(); */

    do_initcalls();

    /* Create initial domain 0. */
    dom0 = domain_create(0, 0, 0);
    if ( IS_ERR(dom0) || (alloc_dom0_vcpu0() == NULL) )
            panic("Error creating domain 0");

    dom0->is_privileged = 1;
    dom0->target = NULL;

    if ( construct_dom0(dom0) != 0)
            panic("Could not set up DOM0 guest OS");

    /* Scrub RAM that is still free and so may go to an unprivileged domain. */
    scrub_heap_pages();

    init_constructors();

    console_endboot();

    /* Hide UART from DOM0 if we're using it */
    serial_endboot();

    system_state = SYS_STATE_active;

    domain_unpause_by_systemcontroller(dom0);

    /* Switch on to the dynamically allocated stack for the idle vcpu
     * since the static one we're running on is about to be freed. */
    memcpy(idle_vcpu[0]->arch.cpu_info, get_cpu_info(),
           sizeof(struct cpu_info));
    switch_stack_and_jump(idle_vcpu[0]->arch.cpu_info, init_done);
}
Ejemplo n.º 7
0
Archivo: setup.c Proyecto: caomw/xen
/* C entry point for boot CPU */
void __init start_xen(unsigned long boot_phys_offset,
                      unsigned long fdt_paddr,
                      unsigned long cpuid)
{
    size_t fdt_size;
    int cpus, i;
    paddr_t xen_paddr;
    const char *cmdline;
    struct bootmodule *xen_bootmodule;
    struct domain *dom0;
    struct xen_arch_domainconfig config;

    setup_cache();

    percpu_init_areas();
    set_processor_id(0); /* needed early, for smp_processor_id() */

    set_current((struct vcpu *)0xfffff000); /* debug sanity */
    idle_vcpu[0] = current;

    setup_virtual_regions(NULL, NULL);
    /* Initialize traps early allow us to get backtrace when an error occurred */
    init_traps();

    smp_clear_cpu_maps();

    /* This is mapped by head.S */
    device_tree_flattened = (void *)BOOT_FDT_VIRT_START
        + (fdt_paddr & ((1 << SECOND_SHIFT) - 1));
    fdt_size = boot_fdt_info(device_tree_flattened, fdt_paddr);

    cmdline = boot_fdt_cmdline(device_tree_flattened);
    printk("Command line: %s\n", cmdline);
    cmdline_parse(cmdline);

    /* Register Xen's load address as a boot module. */
    xen_bootmodule = add_boot_module(BOOTMOD_XEN,
                             (paddr_t)(uintptr_t)(_start + boot_phys_offset),
                             (paddr_t)(uintptr_t)(_end - _start + 1), NULL);
    BUG_ON(!xen_bootmodule);

    xen_paddr = get_xen_paddr();
    setup_pagetables(boot_phys_offset, xen_paddr);

    /* Update Xen's address now that we have relocated. */
    printk("Update BOOTMOD_XEN from %"PRIpaddr"-%"PRIpaddr" => %"PRIpaddr"-%"PRIpaddr"\n",
           xen_bootmodule->start, xen_bootmodule->start + xen_bootmodule->size,
           xen_paddr, xen_paddr + xen_bootmodule->size);
    xen_bootmodule->start = xen_paddr;

    setup_mm(fdt_paddr, fdt_size);

    /* Parse the ACPI tables for possible boot-time configuration */
    acpi_boot_table_init();

    end_boot_allocator();

    vm_init();
    dt_unflatten_host_device_tree();

    init_IRQ();

    platform_init();

    preinit_xen_time();

    gic_preinit();

    arm_uart_init();
    console_init_preirq();
    console_init_ring();

    system_state = SYS_STATE_boot;

    processor_id();

    smp_init_cpus();
    cpus = smp_get_max_cpus();

    init_xen_time();

    gic_init();

    p2m_vmid_allocator_init();

    softirq_init();

    tasklet_subsys_init();


    xsm_dt_init();

    init_maintenance_interrupt();
    init_timer_interrupt();

    timer_init();

    init_idle_domain();

    rcu_init();

    arch_init_memory();

    local_irq_enable();
    local_abort_enable();

    smp_prepare_cpus(cpus);

    initialize_keytable();

    console_init_postirq();

    do_presmp_initcalls();

    for_each_present_cpu ( i )
    {
        if ( (num_online_cpus() < cpus) && !cpu_online(i) )
        {
            int ret = cpu_up(i);
            if ( ret != 0 )
                printk("Failed to bring up CPU %u (error %d)\n", i, ret);
        }
    }

    printk("Brought up %ld CPUs\n", (long)num_online_cpus());
    /* TODO: smp_cpus_done(); */

    setup_virt_paging();

    iommu_setup();

    do_initcalls();

    /*
     * It needs to be called after do_initcalls to be able to use
     * stop_machine (tasklets initialized via an initcall).
     */
    apply_alternatives_all();

    /* Create initial domain 0. */
    /* The vGIC for DOM0 is exactly emulating the hardware GIC */
    config.gic_version = XEN_DOMCTL_CONFIG_GIC_NATIVE;
    config.nr_spis = gic_number_lines() - 32;

    dom0 = domain_create(0, 0, 0, &config);
    if ( IS_ERR(dom0) || (alloc_dom0_vcpu0(dom0) == NULL) )
            panic("Error creating domain 0");

    dom0->is_privileged = 1;
    dom0->target = NULL;

    if ( construct_dom0(dom0) != 0)
            panic("Could not set up DOM0 guest OS");

    /* Scrub RAM that is still free and so may go to an unprivileged domain. */
    scrub_heap_pages();

    init_constructors();

    console_endboot();

    /* Hide UART from DOM0 if we're using it */
    serial_endboot();

    system_state = SYS_STATE_active;

    /* Must be done past setting system_state. */
    unregister_init_virtual_region();

    domain_unpause_by_systemcontroller(dom0);

    /* Switch on to the dynamically allocated stack for the idle vcpu
     * since the static one we're running on is about to be freed. */
    memcpy(idle_vcpu[0]->arch.cpu_info, get_cpu_info(),
           sizeof(struct cpu_info));
    switch_stack_and_jump(idle_vcpu[0]->arch.cpu_info, init_done);
}
Ejemplo n.º 8
0
asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern struct kernel_param __start___param[], __stop___param[];
#ifdef CONFIG_RTAI_RTSPMM
        unsigned int indice_part;
        /* Size of the needed memory block by the configuration */
        unsigned long rt_mem_block_size = 0;
#endif
/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	page_address_init();
	printk(linux_banner);
	setup_arch(&command_line);
	setup_per_cpu_areas();

	/*
	 * Mark the boot cpu "online" so that it can call console drivers in
	 * printk() and can access its per-cpu storage.
	 */
	smp_prepare_boot_cpu();

	/*
	 * Set up the scheduler prior starting any interrupts (such as the
	 * timer interrupt). Full topology setup happens at smp_init()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * fragile until we cpu_idle() for the first time.
	 */
	preempt_disable();
	build_all_zonelists();
	page_alloc_init();
	early_init_hardirqs();
	printk("Kernel command line: %s\n", saved_command_line);
	parse_early_param();
	parse_args("Booting kernel", command_line, __start___param,
		   __stop___param - __start___param,
		   &unknown_bootoption);
	sort_main_extable();
	trap_init();
	rcu_init();
	init_IRQ();
	pidhash_init();
	init_timers();
	softirq_init();
	time_init();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);

#ifdef CONFIG_RTAI_RTSPMM
        /* Allocate a big and continuous memory block for the module SPMM
           included in the RTAI functionalities */
        printk("--- Memory Allocation for the module rt_spmm ---\n");
        /* WARNING
           We need to add some space for the structures vrtxptext and vrtxpt and the partitions bitmap
           that the module rt_spmm uses to handle the blocks in each partition */
        /* for each defined partitions */
        for(indice_part = 0; indice_part <  RT_MAX_PART_NUM; indice_part ++)
          {
            if ((rt_partitions_table[indice_part].block_size != 0) &&
                (rt_partitions_table[indice_part].num_of_blocks != 0))
              {
                rt_partitions_table[indice_part].part_size =
                  (rt_partitions_table[indice_part].block_size + XN_NBBY)
                  *rt_partitions_table[indice_part].num_of_blocks +
                  + sizeof(vrtxptext_t)+sizeof(vrtxpt_t);
                rt_mem_block_size += rt_partitions_table[indice_part].part_size;
              }
          }
#ifdef CONFIG_RTAI_PART_DMA
        printk("Allocate memory in the low part of memory\n");
        rt_mem_block_ptr=(void*)alloc_bootmem_low(rt_mem_block_size + PAGE_SIZE-1);
#else
        printk("Allocate memory in the standard part of memory\n");
        rt_mem_block_ptr=(void*)alloc_bootmem(rt_mem_block_size + PAGE_SIZE-1);
#endif /* CONFIG_PART_DMA */
        printk("Needed Memory Size : %lu\n", rt_mem_block_size);
        printk("Allocated Memory Size : %lu\n", rt_mem_block_size + PAGE_SIZE-1);
        printk("Memory block address : 0x%x\n", (unsigned int)rt_mem_block_ptr);
        printk("-----------------------------------------------\n");
#endif /* CONFIG_RTAI_RTSPMM */

	profile_init();
	local_irq_enable();
#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
			initrd_start < min_low_pfn << PAGE_SHIFT) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
		initrd_start = 0;
	}
#endif
	vfs_caches_init_early();
	mem_init();
	kmem_cache_init();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	calibrate_delay();
	pidmap_init();
	pgtable_cache_init();
	prio_tree_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	fork_init(num_physpages);
	proc_caches_init();
	buffer_init();
	unnamed_dev_init();
	security_init();
	vfs_caches_init(num_physpages);

#ifdef CONFIG_MOT_FEAT_DEVICE_TREE
	mothwcfg_init();
#endif /* CONFIG_MOT_FEAT_DEVICE_TREE */

	radix_tree_init();
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}
Ejemplo n.º 9
0
asmlinkage void __init start_kernel(void)
{
	char * command_line;

/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	page_address_init();
	printk(KERN_NOTICE);
	printk(linux_banner);
	setup_arch(&command_line);
	setup_per_cpu_areas();

	/*
	 * Mark the boot cpu "online" so that it can call console drivers in
	 * printk() and can access its per-cpu storage.
	 */
	smp_prepare_boot_cpu();

	/*
	 * Set up the scheduler prior starting any interrupts (such as the
	 * timer interrupt). Full topology setup happens at smp_init()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * fragile until we cpu_idle() for the first time.
	 */
	preempt_disable();
	build_all_zonelists();
	page_alloc_init();
	printk(KERN_NOTICE "Kernel command line: %s\n", saved_command_line);
	parse_early_param();
	parse_args("Booting kernel", command_line, __kernel_param_list_ptr,
		   kparam_list_count(),
		   &unknown_bootoption);
	sort_main_extable();
#ifdef CONFIG_LTT
	ltt_init();
#endif //CONFIG_LTT
	trap_init();
	rcu_init();
	init_IRQ();
	pidhash_init();
	init_timers();
	hrtimers_init();
	softirq_init();
	time_init();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);
	profile_init();
	local_irq_enable();
#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
			initrd_start < min_low_pfn << PAGE_SHIFT) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
		initrd_start = 0;
	}
#endif
	vfs_caches_init_early();
	mem_init();
	kmem_cache_init();
	setup_per_cpu_pageset();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	calibrate_delay();
	pidmap_init();
	pgtable_cache_init();
	prio_tree_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	fork_init(num_physpages);
	proc_caches_init();
	buffer_init();
	unnamed_dev_init();
	key_init();
	security_init();
	vfs_caches_init(num_physpages);
	radix_tree_init();
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	cpuset_init();

	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}