bootimg.c revision 2a63bb7abf1b27a7a2e8fd5951d77f71a2f290d4 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <string.h>
32
33#include <bootimg.h>
34
35void bootimg_set_cmdline(boot_img_hdr *h, const char *cmdline)
36{
37    strcpy((char*) h->cmdline, cmdline);
38}
39
40boot_img_hdr *mkbootimg(void *kernel, unsigned kernel_size,
41                        void *ramdisk, unsigned ramdisk_size,
42                        void *second, unsigned second_size,
43                        unsigned page_size, unsigned base,
44                        unsigned *bootimg_size)
45{
46    unsigned kernel_actual;
47    unsigned ramdisk_actual;
48    unsigned second_actual;
49    unsigned page_mask;
50    boot_img_hdr *hdr;
51
52    page_mask = page_size - 1;
53
54    kernel_actual = (kernel_size + page_mask) & (~page_mask);
55    ramdisk_actual = (ramdisk_size + page_mask) & (~page_mask);
56    second_actual = (second_size + page_mask) & (~page_mask);
57
58    *bootimg_size = page_size + kernel_actual + ramdisk_actual + second_actual;
59
60    hdr = calloc(*bootimg_size, 1);
61
62    if(hdr == 0) {
63        return hdr;
64    }
65
66    memcpy(hdr->magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);
67
68    hdr->kernel_size =  kernel_size;
69    hdr->ramdisk_size = ramdisk_size;
70    hdr->second_size =  second_size;
71    hdr->kernel_addr =  base + 0x00008000;
72    hdr->ramdisk_addr = base + 0x01000000;
73    hdr->second_addr =  base + 0x00F00000;
74    hdr->tags_addr =    base + 0x00000100;
75    hdr->page_size =    page_size;
76
77    memcpy(hdr->magic + page_size,
78           kernel, kernel_size);
79    memcpy(hdr->magic + page_size + kernel_actual,
80           ramdisk, ramdisk_size);
81    memcpy(hdr->magic + page_size + kernel_actual + ramdisk_actual,
82           second, second_size);
83    return hdr;
84}
85