imx6 启动 init进程

之前不知道imx6内核是怎么启动文件系统的init进程，查了下资料，记录于此，以后再来补充。

kernel/init/main.c

static noinline int init_post(void)

{

	/* need to finish all async __init code before freeing the memory */

	async_synchronize_full();

	free_initmem();

	mark_rodata_ro();

	system_state = SYSTEM_RUNNING;

	numa_default_policy();

	current->signal->flags |= SIGNAL_UNKILLABLE;

	if (ramdisk_execute_command) {

		run_init_process(ramdisk_execute_command);

		printk(KERN_WARNING "Failed to execute %s\n",

				ramdisk_execute_command);

	}

	/*

	 * We try each of these until one succeeds.

	 *

	 * The Bourne shell can be used instead of init if we are

	 * trying to recover a really broken machine.

	 */

	if (execute_command) {

		run_init_process(execute_command);

		printk(KERN_WARNING "Failed to execute %s.  Attempting "

					"defaults...\n", execute_command);

	}

        // 启动init进程

	run_init_process("/sbin/init");

	run_init_process("/etc/init");

	run_init_process("/bin/init");

	run_init_process("/bin/sh");

	panic("No init found.  Try passing init= option to kernel. "

	      "See Linux Documentation/init.txt for guidance.");

}

Tony Liu

2016-8-30, Shenzhen

巴特西

imx6 启动 init进程

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