void __init setup_arch(char **cmdline_p)
{
#ifdef CONFIG_64BIT
extern int parisc_narrow_firmware;
#endif
unwind_init();
init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
#ifdef CONFIG_64BIT
printk(KERN_INFO "The 64-bit Kernel has started...\n");
#else
printk(KERN_INFO "The 32-bit Kernel has started...\n");
#endif
printk(KERN_INFO "Default page size is %dKB.\n", (int)(PAGE_SIZE / 1024));
pdc_console_init();
#ifdef CONFIG_64BIT
if(parisc_narrow_firmware) {
printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
}
#endif
setup_pdc();
setup_cmdline(cmdline_p);
collect_boot_cpu_data();
do_memory_inventory(); /* probe for physical memory */
parisc_cache_init();
paging_init();
#ifdef CONFIG_CHASSIS_LCD_LED
/* initialize the LCD/LED after boot_cpu_data is available ! */
led_init(); /* LCD/LED initialization */
#endif
#ifdef CONFIG_PA11
dma_ops_init();
#endif
#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con; /* we use take_over_console() later ! */
#endif
}
int main(void)
{
#ifdef CONFIG_INITCALL
int ret;
initcall_t *initcall;
for (initcall = __rnk_initcalls_start; initcall < __rnk_initcalls_end; initcall++) {
debug_printk("initcall-> %pS\n", *initcall);
ret = (*initcall)();
if (ret < 0)
error_printk("initcall %pS failed: %d\n", *initcall, ret);
}
#endif /* CONFIG_INITCALL */
printk("Welcome to rnk\r\n");
printk("- Initialise scheduler...\r\n");
#ifndef CONFIG_INITCALL
schedule_init();
time_init();
#endif /* CONFIG_INITCALL */
#ifdef CONFIG_UNWIND
unwind_init();
#endif /* CONFIG_UNWIND */
printk("- Add thread to scheduler\r\n");
add_thread(&loading_thread, 1);
printk("- Start scheduling...\r\n");
start_schedule();
while(1)
;
return 0; //Never reach
}
void __init setup_arch(char **cmdline_p)
{
#ifdef CONFIG_64BIT
extern int parisc_narrow_firmware;
#endif
unwind_init();
init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
#ifdef CONFIG_64BIT
printk(KERN_INFO "The 64-bit Kernel has started...\n");
#else
printk(KERN_INFO "The 32-bit Kernel has started...\n");
#endif
printk(KERN_INFO "Kernel default page size is %d KB. Huge pages ",
(int)(PAGE_SIZE / 1024));
#ifdef CONFIG_HUGETLB_PAGE
printk(KERN_CONT "enabled with %d MB physical and %d MB virtual size",
1 << (REAL_HPAGE_SHIFT - 20), 1 << (HPAGE_SHIFT - 20));
#else
printk(KERN_CONT "disabled");
#endif
printk(KERN_CONT ".\n");
/*
* Check if initial kernel page mappings are sufficient.
* panic early if not, else we may access kernel functions
* and variables which can't be reached.
*/
if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
panic("KERNEL_INITIAL_ORDER too small!");
pdc_console_init();
#ifdef CONFIG_64BIT
if(parisc_narrow_firmware) {
printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
}
#endif
setup_pdc();
setup_cmdline(cmdline_p);
collect_boot_cpu_data();
do_memory_inventory(); /* probe for physical memory */
parisc_cache_init();
paging_init();
#ifdef CONFIG_CHASSIS_LCD_LED
/* initialize the LCD/LED after boot_cpu_data is available ! */
led_init(); /* LCD/LED initialization */
#endif
#ifdef CONFIG_PA11
dma_ops_init();
#endif
#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con; /* we use do_take_over_console() later ! */
#endif
clear_sched_clock_stable();
}
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();
debug_objects_early_init();
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();
#ifndef CONFIG_MIPS_BRCM
printk(KERN_NOTICE);
printk(linux_banner);
#endif
setup_arch(&command_line);
mm_init_owner(&init_mm, &init_task);
setup_command_line(command_line);
unwind_setup();
setup_per_cpu_areas();
setup_nr_cpu_ids();
smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
#ifdef CONFIG_MIPS_BRCM
printk(KERN_NOTICE);
printk(linux_banner);
#endif
/*
* 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", boot_command_line);
parse_early_param();
parse_args("Booting kernel", static_command_line, __start___param,
__stop___param - __start___param,
&unknown_bootoption);
if (!irqs_disabled()) {
printk(KERN_WARNING "start_kernel(): bug: interrupts were "
"enabled *very* early, fixing it\n");
local_irq_disable();
}
sort_main_extable();
trap_init();
rcu_init();
init_IRQ();
pidhash_init();
init_timers();
hrtimers_init();
softirq_init();
timekeeping_init();
time_init();
sched_clock_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 &&
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
vmalloc_init();
vfs_caches_init_early();
cpuset_init_early();
page_cgroup_init();
mem_init();
enable_debug_pagealloc();
cpu_hotplug_init();
kmem_cache_init();
debug_objects_mem_init();
idr_init_cache();
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
thread_info_cache_init();
fork_init(num_physpages);
proc_caches_init();
buffer_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
cgroup_init();
cpuset_init();
taskstats_init_early();
delayacct_init();
check_bugs();
acpi_early_init(); /* before LAPIC and SMP init */
ftrace_init();
/* Do the rest non-__init'ed, we're now alive */
rest_init();
}
