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 "bootimg_utils.h"
30
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34
bootimg_set_cmdline(boot_img_hdr * h,const char * cmdline)35 void bootimg_set_cmdline(boot_img_hdr *h, const char *cmdline)
36 {
37 strcpy((char*) h->cmdline, cmdline);
38 }
39
mkbootimg(void * kernel,unsigned kernel_size,unsigned kernel_offset,void * ramdisk,unsigned ramdisk_size,unsigned ramdisk_offset,void * second,unsigned second_size,unsigned second_offset,unsigned page_size,unsigned base,unsigned tags_offset,unsigned * bootimg_size)40 boot_img_hdr *mkbootimg(void *kernel, unsigned kernel_size, unsigned kernel_offset,
41 void *ramdisk, unsigned ramdisk_size, unsigned ramdisk_offset,
42 void *second, unsigned second_size, unsigned second_offset,
43 unsigned page_size, unsigned base, unsigned tags_offset,
44 unsigned *bootimg_size)
45 {
46 unsigned kernel_actual;
47 unsigned ramdisk_actual;
48 unsigned second_actual;
49 unsigned page_mask;
50
51 page_mask = page_size - 1;
52
53 kernel_actual = (kernel_size + page_mask) & (~page_mask);
54 ramdisk_actual = (ramdisk_size + page_mask) & (~page_mask);
55 second_actual = (second_size + page_mask) & (~page_mask);
56
57 *bootimg_size = page_size + kernel_actual + ramdisk_actual + second_actual;
58
59 boot_img_hdr* hdr = reinterpret_cast<boot_img_hdr*>(calloc(*bootimg_size, 1));
60 if (hdr == 0) {
61 return hdr;
62 }
63
64 memcpy(hdr->magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);
65
66 hdr->kernel_size = kernel_size;
67 hdr->ramdisk_size = ramdisk_size;
68 hdr->second_size = second_size;
69
70 hdr->kernel_addr = base + kernel_offset;
71 hdr->ramdisk_addr = base + ramdisk_offset;
72 hdr->second_addr = base + second_offset;
73 hdr->tags_addr = base + tags_offset;
74
75 hdr->page_size = page_size;
76
77
78 memcpy(hdr->magic + page_size,
79 kernel, kernel_size);
80 memcpy(hdr->magic + page_size + kernel_actual,
81 ramdisk, ramdisk_size);
82 memcpy(hdr->magic + page_size + kernel_actual + ramdisk_actual,
83 second, second_size);
84 return hdr;
85 }
86