void device_setup(void)
{
extern void console_map_init(void);
struct gendisk *p;
int nr=0;
chr_dev_init();
blk_dev_init();
sti();
#ifdef CONFIG_SCSI
scsi_dev_init();
#endif
#ifdef CONFIG_INET
net_dev_init();
#endif
console_map_init();
for (p = gendisk_head ; p ; p=p->next) {
setup_dev(p);
nr += p->nr_real;
}
#ifdef CONFIG_BLK_DEV_RAM
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start && mount_initrd) initrd_load();
else
#endif
rd_load();
#endif
}
static int __init genhd_device_init(void)
{
bdev_map = kobj_map_init(base_probe, &block_subsys_sem);
blk_dev_init();
subsystem_register(&block_subsys);
return 0;
}
void main(void) /* This really IS void, no error here. */
{ /* The startup routine assumes (well, ...) this */
/*
* Interrupts are still disabled. Do necessary setups, then
* enable them
*/
ROOT_DEV = ORIG_ROOT_DEV;
drive_info = DRIVE_INFO;
memory_end = (1<<20) + (EXT_MEM_K<<10);
memory_end &= 0xfffff000;
if (memory_end > 16*1024*1024)
memory_end = 16*1024*1024;
if (memory_end > 12*1024*1024)
buffer_memory_end = 4*1024*1024;
else if (memory_end > 6*1024*1024)
buffer_memory_end = 2*1024*1024;
else
buffer_memory_end = 1*1024*1024;
main_memory_start = buffer_memory_end;
#ifdef RAMDISK
main_memory_start += rd_init(main_memory_start, RAMDISK*1024);
#endif
mem_init(main_memory_start,memory_end);
trap_init();
blk_dev_init();
chr_dev_init();
tty_init();
time_init();
sched_init();
buffer_init(buffer_memory_end);
hd_init();
floppy_init();
sti();
move_to_user_mode();
setup((void *) &drive_info);
(void) open("/dev/tty0",O_RDWR,0);
(void) dup(0);
(void) dup(0);
(void) open("/var/process.log",O_CREAT|O_TRUNC|O_WRONLY,0666);
#ifdef dis_func
(void) open("/var/dis_func.log",O_CREAT|O_TRUNC|O_WRONLY,0666);
#endif
if (!fork()) { /* we count on this going ok */
init();
}
/*
* NOTE!! For any other task 'pause()' would mean we have to get a
* signal to awaken, but task0 is the sole exception (see 'schedule()')
* as task 0 gets activated at every idle moment (when no other tasks
* can run). For task0 'pause()' just means we go check if some other
* task can run, and if not we return here.
*/
for(;;) pause();
}
static int __init genhd_device_init(void)
{
int err;
bdev_map = kobj_map_init(base_probe, &block_subsys_lock);
blk_dev_init();
err = subsystem_register(&block_subsys);
if (err < 0)
printk(KERN_WARNING "%s: subsystem_register error: %d\n",
__FUNCTION__, err);
return err;
}
/**
* 主核初始化
*/
asmlinkage void __init start_master(void)
{
debug_printstr_mmu("xby_debug, start cpu 0\n");
local_irq_disable();
//tick_init();
/* 为当前CPU设置其活动掩码 */
boot_cpu_init();
/* 体系结构特定的初始化过程 */
start_arch();
//初始化boot内存分配器
InitBootMemory(0xc0000000 + 8 * 1024 * 1024, 0xc0000000 + 24 * 1024 * 1024);
init_IRQ();
//体系结构和驱动的一些初始化过程
//run_initcall();
//为VFS分配一些大的内存块，用于哈希表。此过程必须在boot阶段分配。
//vfs_caches_init_early();
#ifdef FS
blk_dev_init();
inode_init();
file_table_init();
name_cache_init();
buffer_init_early();
#endif
memory_init();
#ifdef FS
buffer_init_tail();
tty_init();
#endif
sched_init();
time_init();
setup_timer();
serial_init();
//mmc_init();
//omap_gpio_init();
//初始化文件系统
//vfs_caches_init(num_physpages);
local_irq_enable();
//创建系统任务，以及用户任务入口
TaskEntry();
cpu_idle();
//不可能运行到这里来
BUG();
}
int __init device_init(void)
{
struct blk_probe *base = kmalloc(sizeof(struct blk_probe), GFP_KERNEL);
int i;
memset(base, 0, sizeof(struct blk_probe));
base->dev = 1;
base->range = ~0; /* range 1 .. ~0 */
base->get = base_probe;
for (i = 0; i < MAX_PROBE_HASH; i++)
probes[i] = base; /* must remain last in chain */
blk_dev_init();
subsystem_register(&block_subsys);
return 0;
}
int __init device_init(void)
{
rwlock_init(&gendisk_lock);
blk_dev_init();
sti();
#ifdef CONFIG_NET
net_dev_init();
#endif
#ifdef CONFIG_ATM
(void) atmdev_init();
#endif
#ifdef CONFIG_VT
console_map_init();
#endif
return 0;
}
void main(void) /* This really IS void, no error here. */
{ /* The startup routine assumes (well, ...) this */
/*
* Interrupts are still disabled. Do necessary setups, then
* enable them
*/
ROOT_DEV = ORIG_ROOT_DEV;
drive_info = DRIVE_INFO;
memory_end = (1<<20) + (EXT_MEM_K<<10);
memory_end &= 0xfffff000;
if (memory_end > 16*1024*1024)
memory_end = 16*1024*1024;
if (memory_end > 12*1024*1024)
buffer_memory_end = 4*1024*1024;
else if (memory_end > 6*1024*1024)
buffer_memory_end = 2*1024*1024;
else
buffer_memory_end = 1*1024*1024;
main_memory_start = buffer_memory_end;
#ifdef RAMDISK
main_memory_start += rd_init(main_memory_start, RAMDISK*1024);
#endif
mem_init(main_memory_start,memory_end);
trap_init(); /* set the IDT in 0x00080000~0x000807ff(4KB)*/
blk_dev_init();
chr_dev_init(); /* this function do nothing */
tty_init(); /* rs_init() and con_init() */
time_init();
sched_init();
buffer_init(buffer_memory_end);
hd_init();
floppy_init();
sti();
move_to_user_mode();
if (!fork()) { /* we count on this going ok */
init();
}
/*
* NOTE!! For any other task 'pause()' would mean we have to get a
* signal to awaken, but task0 is the sole exception (see 'schedule()')
* as task 0 gets activated at every idle moment (when no other tasks
* can run). For task0 'pause()' just means we go check if some other
* task can run, and if not we return here.
*/
for(;;) pause();
}
void device_setup(void)
{
register struct gendisk *p;
chr_dev_init();
blk_dev_init();
set_irq();
for (p = gendisk_head; p; p = p->next)
setup_dev(p);
#ifdef CONFIG_BLK_DEV_RAM
rd_load();
#endif
}
