diff options
Diffstat (limited to 'rbutil/mkmpioboot/mkmpioboot.c')
-rw-r--r-- | rbutil/mkmpioboot/mkmpioboot.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/rbutil/mkmpioboot/mkmpioboot.c b/rbutil/mkmpioboot/mkmpioboot.c new file mode 100644 index 0000000000..6d52e53f09 --- /dev/null +++ b/rbutil/mkmpioboot/mkmpioboot.c | |||
@@ -0,0 +1,188 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id:$ | ||
9 | * | ||
10 | * Copyright (C) 2010 by Marcin Bukat | ||
11 | * | ||
12 | * code taken mostly from mkboot.c | ||
13 | * Copyright (C) 2005 by Linus Nielsen Feltzing | ||
14 | * | ||
15 | * This program is free software; you can redistribute it and/or | ||
16 | * modify it under the terms of the GNU General Public License | ||
17 | * as published by the Free Software Foundation; either version 2 | ||
18 | * of the License, or (at your option) any later version. | ||
19 | * | ||
20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
21 | * KIND, either express or implied. | ||
22 | * | ||
23 | ****************************************************************************/ | ||
24 | #include <stdio.h> | ||
25 | #include <stdlib.h> | ||
26 | #include <string.h> | ||
27 | #include "mkmpioboot.h" | ||
28 | |||
29 | #define OF_FIRMWARE_LEN 0x100000 /* size of HD200_UPG.SYS file */ | ||
30 | #define MPIO_STRING_OFFSET 0xfffe0 | ||
31 | |||
32 | /* We support only 1.30.05 version of OF for now */ | ||
33 | static char *mpio_string = "HD200 HDD Audio Ver113005"; | ||
34 | |||
35 | /* MPIO HD200 firmware is plain binary image | ||
36 | * 4 bytes of initial SP (loaded on reset) | ||
37 | * 4 bytes of initial PC (loaded on reset) | ||
38 | * binary image with entry point 0x00000008 | ||
39 | * | ||
40 | * We put our bootloader code at 0x000e0000 | ||
41 | * and patch reset vector to jump directly | ||
42 | * into our code on reset | ||
43 | */ | ||
44 | |||
45 | static unsigned char image[OF_FIRMWARE_LEN]; | ||
46 | |||
47 | static unsigned int get_uint32be(unsigned char* p) | ||
48 | { | ||
49 | return ((p[0] << 24) | (p[1] << 16) | (p[2]<<8) | p[3]); | ||
50 | } | ||
51 | |||
52 | static long checksum(unsigned char* buf, unsigned long length) | ||
53 | { | ||
54 | unsigned long chksum = 69; /* MPIO HD200 model number */ | ||
55 | unsigned long i; | ||
56 | |||
57 | if(buf == NULL) | ||
58 | return -1; | ||
59 | |||
60 | for (i = 0; i < length; i++) | ||
61 | { | ||
62 | chksum += *buf++; | ||
63 | } | ||
64 | |||
65 | return chksum; | ||
66 | } | ||
67 | |||
68 | int mkmpioboot(const char* infile, const char* bootfile, const char* outfile, int origin) | ||
69 | { | ||
70 | FILE *f; | ||
71 | int i; | ||
72 | int len; | ||
73 | unsigned long file_checksum; | ||
74 | unsigned char header_checksum[4]; | ||
75 | |||
76 | memset(image, 0xff, sizeof(image)); | ||
77 | |||
78 | /* First, read the mpio original firmware into the image */ | ||
79 | f = fopen(infile, "rb"); | ||
80 | if(!f) { | ||
81 | perror(infile); | ||
82 | return -1; | ||
83 | } | ||
84 | |||
85 | i = fread(image, 1, OF_FIRMWARE_LEN, f); | ||
86 | if(i < OF_FIRMWARE_LEN) { | ||
87 | perror(infile); | ||
88 | fclose(f); | ||
89 | return -2; | ||
90 | } | ||
91 | |||
92 | fclose(f); | ||
93 | |||
94 | /* Now check if we have OF file loaded based on presence | ||
95 | * of the version string in firmware | ||
96 | */ | ||
97 | |||
98 | if (strcmp((char*)(image + MPIO_STRING_OFFSET),mpio_string) != 0) | ||
99 | { | ||
100 | perror("Loaded firmware file does not look like MPIO OF file!"); | ||
101 | return -3; | ||
102 | } | ||
103 | |||
104 | /* Now, read the boot loader into the image */ | ||
105 | f = fopen(bootfile, "rb"); | ||
106 | if(!f) { | ||
107 | perror(bootfile); | ||
108 | fclose(f); | ||
109 | return -4; | ||
110 | } | ||
111 | |||
112 | /* get bootloader size | ||
113 | * excluding header | ||
114 | */ | ||
115 | fseek(f, 0, SEEK_END); | ||
116 | len = ftell(f) - 8; | ||
117 | |||
118 | /* Now check if the place we want to put | ||
119 | * our bootloader is free | ||
120 | */ | ||
121 | for(i=0;i<len;i++) | ||
122 | { | ||
123 | if (image[origin+i] != 0) | ||
124 | { | ||
125 | perror("Place for bootloader in OF file not empty"); | ||
126 | return -5; | ||
127 | } | ||
128 | } | ||
129 | |||
130 | fseek(f, 0, SEEK_SET); | ||
131 | |||
132 | /* get bootloader checksum from the header*/ | ||
133 | fread(header_checksum,1,4,f); | ||
134 | |||
135 | /* omit header */ | ||
136 | fseek(f, 8, SEEK_SET); | ||
137 | |||
138 | i = fread(image + origin, 1, len, f); | ||
139 | if(i < len) { | ||
140 | perror(bootfile); | ||
141 | fclose(f); | ||
142 | return -6; | ||
143 | } | ||
144 | |||
145 | fclose(f); | ||
146 | |||
147 | /* calculate checksum and compare with data | ||
148 | * from header | ||
149 | */ | ||
150 | file_checksum = checksum(image + origin, len); | ||
151 | |||
152 | if ( file_checksum != get_uint32be(header_checksum) ) | ||
153 | { | ||
154 | printf("Bootloader checksum error\n"); | ||
155 | return -7; | ||
156 | } | ||
157 | |||
158 | f = fopen(outfile, "wb"); | ||
159 | if(!f) { | ||
160 | perror(outfile); | ||
161 | return -8; | ||
162 | } | ||
163 | |||
164 | /* Patch the stack pointer address */ | ||
165 | image[0] = image[origin + 0]; | ||
166 | image[1] = image[origin + 1]; | ||
167 | image[2] = image[origin + 2]; | ||
168 | image[3] = image[origin + 3]; | ||
169 | |||
170 | /* Patch the reset vector to start the boot loader */ | ||
171 | image[4] = image[origin + 4]; | ||
172 | image[5] = image[origin + 5]; | ||
173 | image[6] = image[origin + 6]; | ||
174 | image[7] = image[origin + 7]; | ||
175 | |||
176 | i = fwrite(image, 1, OF_FIRMWARE_LEN, f); | ||
177 | if(i < OF_FIRMWARE_LEN) { | ||
178 | perror(outfile); | ||
179 | fclose(f); | ||
180 | return -9; | ||
181 | } | ||
182 | |||
183 | printf("Wrote 0x%x bytes in %s\n", OF_FIRMWARE_LEN, outfile); | ||
184 | |||
185 | fclose(f); | ||
186 | |||
187 | return 0; | ||
188 | } | ||