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1 | #include <stdio.h> |
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2 | #include <string.h> |
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3 | #include <usb.h> |
4 | |
5 | |
6 | typedef unsigned char u8; |
7 | typedef unsigned short u16; |
8 | typedef unsigned int u32; |
9 | #define array_size(x) (sizeof(x) / sizeof(x[0])) |
10 | |
11 | static const struct { |
12 | unsigned short vendor; |
13 | unsigned short product; |
14 | const char *name; |
15 | } g_devices[] = { |
16 | { 0x03eb, 0x202a, "16MX+U Game Device" }, |
17 | { 0x03eb, 0x202b, "32MX+U Game Device" }, |
18 | { 0x03eb, 0x202c, "16MX+US Game Device" }, |
19 | { 0x03eb, 0x202d, "32MX+UF Game Device" }, |
20 | }; |
21 | |
22 | /*****************************************************************************/ |
23 | |
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24 | #define CMD_ATM_READY 0x22 |
25 | #define CMD_SEC_GET_NAME 'G' /* read filename */ |
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26 | |
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27 | /* bus controllers */ |
28 | #define CTL_DATA_BUS 0x55 |
29 | #define CTL_ADDR_BUS 0xAA |
30 | |
31 | #define FILENAME_ROM0 0 |
32 | #define FILENAME_ROM1 1 |
33 | #define FILENAME_RAM 2 |
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34 | |
35 | typedef struct { |
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36 | u8 magic[4]; |
37 | u8 reserved[11]; |
38 | u8 magic2; |
39 | u8 mx_cmd; |
40 | union { |
41 | struct { |
42 | u8 which_device; |
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43 | } dev_info; |
44 | struct { |
45 | u8 addrb2; /* most significant */ |
46 | u8 addrb1; |
47 | u8 addrb0; |
48 | u8 num_pages; |
49 | } rom_rw; |
50 | struct { |
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51 | u8 which; |
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52 | } filename; |
53 | struct { |
54 | u8 times_cmd; |
55 | u8 action; |
56 | u8 cntb3; |
57 | u8 cntb2; |
58 | u8 cntb1; |
59 | u8 cntb0; |
60 | } times_write; |
61 | }; |
62 | u8 pad[8]; |
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63 | } dev_cmd_t; |
64 | |
65 | typedef struct { |
66 | u8 firmware_ver[4]; |
67 | u8 bootloader_ver[4]; |
68 | char names[56]; |
69 | } dev_info_t; |
70 | |
71 | static void prepare_cmd(dev_cmd_t *dev_cmd, u8 cmd) |
72 | { |
73 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
74 | |
75 | memcpy(dev_cmd->magic, "USBC", 4); |
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76 | dev_cmd->magic2 = 0x67; /* MySCSICommand, EXCOMMAND */ |
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77 | dev_cmd->mx_cmd = cmd; |
78 | } |
79 | |
80 | static int write_cmd(struct usb_dev_handle *dev, dev_cmd_t *cmd) |
81 | { |
82 | int ret = usb_bulk_write(dev, 0x03, (char *)cmd, sizeof(*cmd), 2000); |
83 | if (ret < 0) { |
84 | fprintf(stderr, "failed to write:\n"); |
85 | fprintf(stderr, "%s (%d)\n", usb_strerror(), ret); |
86 | } else if (ret != sizeof(*cmd)) |
87 | printf("write_cmd: wrote only %d of %d bytes\n", ret, sizeof(*cmd)); |
88 | |
89 | return ret; |
90 | } |
91 | |
92 | static int read_response(struct usb_dev_handle *dev, void *buff, int size) |
93 | { |
94 | int ret = usb_bulk_read(dev, 0x82, buff, size, 2000); |
95 | if (ret < 0) { |
96 | fprintf(stderr, "failed to read:\n"); |
97 | fprintf(stderr, "%s (%d)\n", usb_strerror(), ret); |
98 | } else if (ret != size) |
99 | printf("read_response: read only %d of %d bytes\n", ret, size); |
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100 | |
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101 | return ret; |
102 | } |
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103 | |
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104 | static int read_info(struct usb_dev_handle *device, u8 ctl_id) |
105 | { |
106 | dev_cmd_t cmd; |
107 | dev_info_t info; |
108 | int ret; |
109 | |
110 | prepare_cmd(&cmd, CMD_ATM_READY); |
111 | cmd.dev_info.which_device = ctl_id; |
112 | memset(&info, 0, sizeof(info)); |
113 | |
114 | ret = write_cmd(device, &cmd); |
115 | if (ret < 0) |
116 | return ret; |
117 | |
118 | ret = read_response(device, &info, sizeof(info)); |
119 | if (ret < 0) |
120 | return ret; |
121 | |
122 | printf(" firmware version: %X.%X.%X%c\n", info.firmware_ver[0], |
123 | info.firmware_ver[1], info.firmware_ver[2], info.firmware_ver[3]); |
124 | printf(" bootloader version: %X.%X.%X%c\n", info.bootloader_ver[0], |
125 | info.bootloader_ver[1], info.bootloader_ver[2], info.bootloader_ver[3]); |
126 | info.names[sizeof(info.names) - 1] = 0; |
127 | printf(" device name: %s\n", info.names); |
128 | |
129 | return 0; |
130 | } |
131 | |
132 | static int get_filename(struct usb_dev_handle *dev, char *dst, int len, u8 which) |
133 | { |
134 | char buff[65]; |
135 | dev_cmd_t cmd; |
136 | int ret; |
137 | |
138 | prepare_cmd(&cmd, CMD_SEC_GET_NAME); |
139 | cmd.filename.which = which; |
140 | memset(buff, 0, sizeof(buff)); |
141 | |
142 | ret = write_cmd(dev, &cmd); |
143 | if (ret < 0) |
144 | return ret; |
145 | |
146 | ret = read_response(dev, buff, 64); |
147 | if (ret < 0) |
148 | return ret; |
149 | |
150 | strncpy(dst, buff, len); |
151 | dst[len - 1] = 0; |
152 | |
153 | return 0; |
154 | } |
155 | |
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156 | static usb_dev_handle *get_device(void) |
157 | { |
158 | struct usb_dev_handle *handle; |
159 | struct usb_device *dev; |
160 | struct usb_bus *bus; |
161 | int i, ret; |
162 | |
163 | ret = usb_find_busses(); |
164 | if (ret <= 0) { |
165 | fprintf(stderr, "Can't find USB busses\n"); |
166 | return NULL; |
167 | } |
168 | |
169 | ret = usb_find_devices(); |
170 | if (ret <= 0) { |
171 | fprintf(stderr, "Can't find USB devices\n"); |
172 | return NULL; |
173 | } |
174 | |
175 | bus = usb_get_busses(); |
176 | for (; bus; bus = bus->next) |
177 | { |
178 | for (dev = bus->devices; dev; dev = dev->next) |
179 | { |
180 | for (i = 0; i < array_size(g_devices); i++) |
181 | { |
182 | if (dev->descriptor.idVendor == g_devices[i].vendor && |
183 | dev->descriptor.idProduct == g_devices[i].product) |
184 | goto found; |
185 | } |
186 | } |
187 | } |
188 | |
189 | fprintf(stderr, "device not found.\n"); |
190 | return NULL; |
191 | |
192 | found: |
193 | printf("found %s.\n", g_devices[i].name); |
194 | |
195 | handle = usb_open(dev); |
196 | if (handle == NULL) { |
197 | fprintf(stderr, "failed to open device:\n"); |
198 | fprintf(stderr, "%s\n", usb_strerror()); |
199 | return NULL; |
200 | } |
201 | |
202 | ret = usb_set_configuration(handle, 1); |
203 | if (ret != 0) { |
204 | fprintf(stderr, "couldn't set configuration for /*/bus/usb/%s/%s:\n", |
205 | bus->dirname, dev->filename); |
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206 | fprintf(stderr, "%s (%d)\n", usb_strerror(), ret); |
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207 | return NULL; |
208 | } |
209 | |
210 | ret = usb_claim_interface(handle, 0); |
211 | if (ret != 0) { |
212 | fprintf(stderr, "couldn't claim /*/bus/usb/%s/%s:\n", |
213 | bus->dirname, dev->filename); |
214 | fprintf(stderr, "%s (%d)\n", usb_strerror(), ret); |
215 | return NULL; |
216 | } |
217 | |
218 | return handle; |
219 | } |
220 | |
221 | static void release_device(struct usb_dev_handle *device) |
222 | { |
223 | usb_release_interface(device, 0); |
224 | usb_close(device); |
225 | } |
226 | |
227 | int main(int argc, char *argv[]) |
228 | { |
229 | struct usb_dev_handle *device; |
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230 | char fname[65]; |
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231 | int ret; |
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232 | |
233 | usb_init(); |
234 | |
235 | device = get_device(); |
236 | if (device == NULL) |
237 | return 1; |
238 | |
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239 | printf("data bus controller:\n"); |
240 | ret = read_info(device, CTL_DATA_BUS); |
241 | if (ret < 0) |
242 | goto end; |
243 | |
244 | printf("address bus controller:\n"); |
245 | ret = read_info(device, CTL_ADDR_BUS); |
246 | if (ret < 0) |
247 | goto end; |
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248 | |
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249 | ret = get_filename(device, fname, sizeof(fname), FILENAME_ROM0); |
250 | if (ret < 0) |
251 | goto end; |
252 | printf("ROM filename: %s\n", fname); |
253 | |
254 | ret = get_filename(device, fname, sizeof(fname), FILENAME_RAM); |
255 | if (ret < 0) |
256 | goto end; |
257 | printf("SRAM filename: %s\n", fname); |
258 | |
259 | |
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260 | |
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261 | end: |
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262 | release_device(device); |
263 | |
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264 | return ret; |
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265 | } |
266 | |