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ÓÉbootload½øÈëlinuxºóÓÉhead.s½øÈëÁËstart_kernelÁË.
asmlinkage void __init start_kernel(void)
{
       char * command_line;
       extern struct kernel_param __start___param[], __stop___param[];
       ………………..
       setup_arch(&command_line);
       ………….
       ………..
       vfs_caches_init(num_physpages); ………….     
 
…………...
       rest_init();
}
 
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void __init setup_arch(char **cmdline_p)
{
       struct tag *tags = (struct tag *)&init_tags;
       struct machine_desc *mdesc;
       char *from = default_command_line;
 
       setup_processor();
       mdesc = setup_machine(machine_arch_type);
       machine_name = mdesc->name;
 
       if (mdesc->soft_reboot)
              reboot_setup("s");
 
       if (mdesc->boot_params)
              tags = phys_to_virt(mdesc->boot_params);
 
       /*
        * If we have the old style parameters, convert them to
        * a tag list.
        */
 &nb


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/*
 *  linux/fs/file_dev.c
 *
 *  (C) 1991  Linus Torvalds
 */
#include <errno.h>
#include <fcntl.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <asm/segment.h>
#define MIN(a,b) (((a)<(b))?(a):(b))
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