diff options
author | Dave Chapman <dave@dchapman.com> | 2007-10-28 11:08:10 +0000 |
---|---|---|
committer | Dave Chapman <dave@dchapman.com> | 2007-10-28 11:08:10 +0000 |
commit | 28f6ae49ec1b1d3464add2941eb015bab56f8016 (patch) | |
tree | 6d4cddba129663340cf2f30212a516acdd16a4eb /tools/mktccboot.c | |
parent | d3e101bd1184e5c1f474ff0978f65ac7e8e2dbfb (diff) | |
download | rockbox-28f6ae49ec1b1d3464add2941eb015bab56f8016.tar.gz rockbox-28f6ae49ec1b1d3464add2941eb015bab56f8016.zip |
Initial work on a port to the Logik DAX 1GB MP3/DAB player. The bootloader build compiles and runs (but only displays some debugging info), and the LCD and ADC drivers are working. Two different bootloader builds are possible: 1) The default build is just a test application for uploading to the device via tcctool; 2) Adding -DTCCBOOT to EXTRA_DEFINES in the build directory Makefile will compile the bootloader so that it can be appended to the end of the original firmware and installed on the device, dual-booting. This commit also includes some work by Hein-Pieter van Braam on a port to the iAudio 7, but that doesn't build yet. A large part of these ports will be generic to all TCC77x devices - see the TelechipsInfo wiki page for some other devices with this CPU. NOTE: Compiling these builds requires an arm-elf-gcc with armv5 support - the current version of rockboxdev.sh compiles such a gcc.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15339 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'tools/mktccboot.c')
-rw-r--r-- | tools/mktccboot.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/tools/mktccboot.c b/tools/mktccboot.c new file mode 100644 index 0000000000..90b85e8335 --- /dev/null +++ b/tools/mktccboot.c | |||
@@ -0,0 +1,184 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2007 by Dave Chapman | ||
11 | * | ||
12 | * Based on mkboot, Copyright (C) 2005 by Linus Nielsen Feltzing | ||
13 | * | ||
14 | * All files in this archive are subject to the GNU General Public License. | ||
15 | * See the file COPYING in the source tree root for full license agreement. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #include <stdio.h> | ||
22 | #include <stdlib.h> | ||
23 | #include <string.h> | ||
24 | #include <sys/types.h> | ||
25 | #include <sys/stat.h> | ||
26 | #include <fcntl.h> | ||
27 | #include <inttypes.h> | ||
28 | #include "telechips.h" | ||
29 | |||
30 | /* | ||
31 | |||
32 | Append a Rockbox bootloader to a Telechips original firmware file. | ||
33 | |||
34 | The first instruction in a TCC firmware file is always of the form: | ||
35 | |||
36 | ldr pc, [pc, #xxx] | ||
37 | |||
38 | where [pc, #xxx] is the entry point of the firmware - e.g. 0x20000020 | ||
39 | |||
40 | mktccboot appends the Rockbox bootloader to the end of the original | ||
41 | firmware image and replaces the contents of [pc, #xxx] with the entry | ||
42 | point of our bootloader - i.e. the length of the original firmware plus | ||
43 | 0x20000000. | ||
44 | |||
45 | It then stores the original entry point from [pc, #xxx] in a fixed | ||
46 | offset in the Rockbox boootloader, which is used by the bootloader to | ||
47 | dual-boot. | ||
48 | |||
49 | Finally, mktccboot corrects the length and CRCs in the main firmware | ||
50 | header, creating a new legal firmware file which can be installed on | ||
51 | the device. | ||
52 | |||
53 | */ | ||
54 | |||
55 | /* win32 compatibility */ | ||
56 | |||
57 | #ifndef O_BINARY | ||
58 | #define O_BINARY 0 | ||
59 | #endif | ||
60 | |||
61 | static void put_uint32le(uint32_t x, unsigned char* p) | ||
62 | { | ||
63 | p[0] = x & 0xff; | ||
64 | p[1] = (x >> 8) & 0xff; | ||
65 | p[2] = (x >> 16) & 0xff; | ||
66 | p[3] = (x >> 24) & 0xff; | ||
67 | } | ||
68 | |||
69 | static uint32_t get_uint32le(unsigned char* p) | ||
70 | { | ||
71 | return (p[3] << 24) | (p[2] << 16) | (p[1]<<8) | p[0]; | ||
72 | } | ||
73 | |||
74 | void usage(void) | ||
75 | { | ||
76 | printf("Usage: mktccboot <firmware file> <boot file> <output file>\n"); | ||
77 | |||
78 | exit(1); | ||
79 | } | ||
80 | |||
81 | off_t filesize(int fd) { | ||
82 | struct stat buf; | ||
83 | |||
84 | if (fstat(fd,&buf) < 0) { | ||
85 | perror("[ERR] Checking filesize of input file"); | ||
86 | return -1; | ||
87 | } else { | ||
88 | return(buf.st_size); | ||
89 | } | ||
90 | } | ||
91 | |||
92 | |||
93 | int main(int argc, char *argv[]) | ||
94 | { | ||
95 | char *infile, *bootfile, *outfile; | ||
96 | int fdin, fdboot,fdout; | ||
97 | int i,n; | ||
98 | int inlength,bootlength; | ||
99 | uint32_t ldr; | ||
100 | unsigned char* image; | ||
101 | int origoffset; | ||
102 | |||
103 | if(argc < 3) { | ||
104 | usage(); | ||
105 | } | ||
106 | |||
107 | infile = argv[1]; | ||
108 | bootfile = argv[2]; | ||
109 | outfile = argv[3]; | ||
110 | |||
111 | fdin = open(infile, O_RDONLY|O_BINARY); | ||
112 | if (fdin < 0) | ||
113 | { | ||
114 | perror(infile); | ||
115 | } | ||
116 | |||
117 | fdboot = open(bootfile, O_RDONLY|O_BINARY); | ||
118 | if (fdboot < 0) | ||
119 | { | ||
120 | perror(bootfile); | ||
121 | } | ||
122 | |||
123 | inlength = filesize(fdin); | ||
124 | bootlength = filesize(fdboot); | ||
125 | |||
126 | image = malloc(inlength + bootlength); | ||
127 | |||
128 | if (image==NULL) | ||
129 | { | ||
130 | printf("[ERR] Could not allocate memory, aborting\n"); | ||
131 | return 1; | ||
132 | } | ||
133 | |||
134 | n = read(fdin, image, inlength); | ||
135 | if (n != inlength) | ||
136 | { | ||
137 | printf("[ERR] Could not read from %s\n",infile); | ||
138 | return 2; | ||
139 | } | ||
140 | |||
141 | n = read(fdboot, image + inlength, bootlength); | ||
142 | if (n != bootlength) | ||
143 | { | ||
144 | printf("[ERR] Could not read from %s\n",bootfile); | ||
145 | return 3; | ||
146 | } | ||
147 | |||
148 | ldr = get_uint32le(image); | ||
149 | |||
150 | /* TODO: Verify it's a LDR instruction */ | ||
151 | origoffset = (ldr&0xfff) + 8; | ||
152 | |||
153 | printf("original firmware entry point: 0x%08x\n",get_uint32le(image + origoffset)); | ||
154 | printf("New entry point: 0x%08x\n",0x20000000 + inlength + 8); | ||
155 | |||
156 | /* Save the original firmware entry point at the start of the bootloader image */ | ||
157 | put_uint32le(get_uint32le(image + origoffset),image+inlength); | ||
158 | put_uint32le(0x20000000 + inlength,image + inlength + 4); | ||
159 | |||
160 | /* Change the original firmware entry point to the third word in our bootloader */ | ||
161 | put_uint32le(0x20000000 + inlength + 8,image+origoffset); | ||
162 | |||
163 | |||
164 | telechips_encode_crc(image, inlength + bootlength); | ||
165 | |||
166 | fdout = open(outfile, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644); | ||
167 | if (fdout < 0) | ||
168 | { | ||
169 | perror(bootfile); | ||
170 | } | ||
171 | |||
172 | n = write(fdout, image, inlength + bootlength); | ||
173 | if (n != inlength + bootlength) | ||
174 | { | ||
175 | printf("[ERR] Could not write output file %s\n",outfile); | ||
176 | return 3; | ||
177 | } | ||
178 | |||
179 | close(fdin); | ||
180 | close(fdboot); | ||
181 | close(fdout); | ||
182 | |||
183 | return 0; | ||
184 | } | ||