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[rsbs2] / firmware.c
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <sys/types.h>
4 #include <sys/stat.h>
5 #include <fcntl.h>
6 #include <unistd.h>
7 #include <errno.h>
8 #include <string.h>
9 #include <strings.h>
10 #include "rsb-crc.h"
11
12 #define FINDSTR(addr, str) (!strncmp((char*)addr, str, strlen(str)))
13
14 struct properties {
15 unsigned int magic;
16 unsigned char unknown0;
17 unsigned char unknown1;
18 unsigned char right_rw;
19 unsigned char rw_mask;
20 unsigned char type1;
21 unsigned char unknown5;
22 unsigned char unknown6;
23 unsigned char unknown7;
24 unsigned char type2;
25 unsigned char val[];
26 };
27
28 void show_properties(unsigned char *fw, int len)
29 {
30 int i;
31
32 for (i = 0; i < (len-100 /* XXX */); i++) {
33 if (FINDSTR(fw+i, "/default/fw_prop/") ||
34 FINDSTR(fw+i, "/default/fw_setup/") ||
35 FINDSTR(fw+i, "/default/oem_prop/")) {
36 struct properties *prop;
37 unsigned char *pos = fw + i;
38
39 printf("0x%08x: found setting: %s: ", i, pos);
40
41 prop = (struct properties*)(pos + strlen((char*)pos) + 1);
42
43 if (prop->magic != 0x83011111) {
44 printf("ignoring...\n");
45 continue;
46 }
47
48 if (prop->type1 == 0x00 && prop->type2 == 0x04) {
49 printf("STRING: %s ", prop->val);
50 } else if (prop->type1 == 0x01 && prop->type2 == 0x01) {
51 printf("BOOL: %s ",(*prop->val ? "TRUE" : "FALSE"));
52 } else if (prop->type1 == 0x04 && prop->type2 == 0x02) {
53 printf("VAL: 0x%x ", *((unsigned int*)prop->val));
54 } else {
55 printf("0x%02x 0x%2x...ignoring\n", prop->type1, prop->type2);
56 continue;
57 }
58
59 if (prop->right_rw == 0x00 && prop->rw_mask == 0x00) {
60 printf("(R-) ");
61 } else if (prop->right_rw == 0x01) {
62 printf("(RW mask: 0x%02x) ", prop->rw_mask);
63 } else {
64 printf("(UNK 0x%02x 0x%02x) ", prop->right_rw, prop->rw_mask);
65 }
66 printf("\n");
67 }
68 }
69 }
70
71 void handle_boarddescription(unsigned char *fw, int len, int patch)
72 {
73 /* 0x01 0x01 0x50 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x88 0x02 0xac 0x01 0xd0 0x05 0x00 0x00 0x6a 0x3a 0x00 0x00 0x06 0x00 0x01 0x00 0x00 0x00 0x00 0x00 */
74 }
75
76 int main(int argc, char **argv)
77 {
78 struct stat statbuf;
79 unsigned char *fw;
80 int fd;
81 int remaining;
82 int ret;
83 unsigned int crc, oldcrc;
84
85 if (argc != 2) {
86 fprintf(stderr,"Syntax: %s firmware.bin\n", argv[0]);
87 exit(1);
88 }
89
90 if (stat(argv[1], &statbuf) == -1) {
91 perror("stat");
92 exit(1);
93 }
94
95 if ((fd = open(argv[1], O_RDONLY)) == -1) {
96 perror("open");
97 exit(1);
98 }
99
100 if ((fw = malloc(statbuf.st_size)) == NULL) {
101 perror("malloc");
102 exit(1);
103 }
104
105 bzero(fw, statbuf.st_size);
106
107 remaining = statbuf.st_size;
108
109 while(remaining) {
110 if ((ret = read(fd, fw + (statbuf.st_size - remaining), remaining)) == -1) {
111 perror("read");
112 exit(1);
113 }
114 remaining -= ret;
115 }
116
117 ret = rsb_crc2(fw, statbuf.st_size, 0x55335053, &crc);
118 oldcrc = (unsigned int)*((unsigned int*)(fw + statbuf.st_size - 4));
119
120 printf("Checksum: 0x%08x (%s), should be: 0x%08x\n",
121 crc,
122 (ret ? "NOT OK" : "OK"),
123 oldcrc);
124
125 if (1) {
126 show_properties(fw, statbuf.st_size - 4);
127 handle_boarddescription(fw, statbuf.st_size - 4, 0);
128 if (0) {
129 ret = rsb_crc2(fw, statbuf.st_size, 0x55335053, &crc);
130 printf("Checksum: 0x%08x\n", crc);
131 }
132 }
133
134 exit(0);
135 }
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