2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
6 #include "linux/init.h"
7 #include "linux/bootmem.h"
8 #include "linux/initrd.h"
10 #include "kern_util.h"
15 /* Changed by uml_initrd_setup, which is a setup */
16 static char *initrd __initdata = NULL;
18 static int __init read_initrd(void)
27 err = os_file_size(initrd, &size);
31 area = alloc_bootmem(size);
35 if(load_initrd(initrd, area, size) == -1)
38 initrd_start = (unsigned long) area;
39 initrd_end = initrd_start + size;
43 __uml_postsetup(read_initrd);
45 static int __init uml_initrd_setup(char *line, int *add)
51 __uml_setup("initrd=", uml_initrd_setup,
52 "initrd=<initrd image>\n"
53 " This is used to boot UML from an initrd image. The argument is the\n"
54 " name of the file containing the image.\n\n"
57 int load_initrd(char *filename, void *buf, int size)
61 fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
63 printk("Opening '%s' failed - err = %d\n", filename, -fd);
66 n = os_read_file(fd, buf, size);
68 printk("Read of %d bytes from '%s' failed, err = %d\n", size,