1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
|
// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (C) 2016 The Android Open Source Project
*/
#include <common.h>
#include <command.h>
#include <env.h>
#include <fastboot.h>
#include <fastboot-internal.h>
#include <fb_mmc.h>
#include <fb_nand.h>
#include <flash.h>
#include <part.h>
#include <stdlib.h>
/**
* image_size - final fastboot image size
*/
static u32 image_size;
/**
* fastboot_bytes_received - number of bytes received in the current download
*/
static u32 fastboot_bytes_received;
/**
* fastboot_bytes_expected - number of bytes expected in the current download
*/
static u32 fastboot_bytes_expected;
static void okay(char *, char *);
static void getvar(char *, char *);
static void download(char *, char *);
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
static void flash(char *, char *);
static void erase(char *, char *);
#endif
static void reboot_bootloader(char *, char *);
static void reboot_fastbootd(char *, char *);
static void reboot_recovery(char *, char *);
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_FORMAT)
static void oem_format(char *, char *);
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_PARTCONF)
static void oem_partconf(char *, char *);
#endif
static const struct {
const char *command;
void (*dispatch)(char *cmd_parameter, char *response);
} commands[FASTBOOT_COMMAND_COUNT] = {
[FASTBOOT_COMMAND_GETVAR] = {
.command = "getvar",
.dispatch = getvar
},
[FASTBOOT_COMMAND_DOWNLOAD] = {
.command = "download",
.dispatch = download
},
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
[FASTBOOT_COMMAND_FLASH] = {
.command = "flash",
.dispatch = flash
},
[FASTBOOT_COMMAND_ERASE] = {
.command = "erase",
.dispatch = erase
},
#endif
[FASTBOOT_COMMAND_BOOT] = {
.command = "boot",
.dispatch = okay
},
[FASTBOOT_COMMAND_CONTINUE] = {
.command = "continue",
.dispatch = okay
},
[FASTBOOT_COMMAND_REBOOT] = {
.command = "reboot",
.dispatch = okay
},
[FASTBOOT_COMMAND_REBOOT_BOOTLOADER] = {
.command = "reboot-bootloader",
.dispatch = reboot_bootloader
},
[FASTBOOT_COMMAND_REBOOT_FASTBOOTD] = {
.command = "reboot-fastboot",
.dispatch = reboot_fastbootd
},
[FASTBOOT_COMMAND_REBOOT_RECOVERY] = {
.command = "reboot-recovery",
.dispatch = reboot_recovery
},
[FASTBOOT_COMMAND_SET_ACTIVE] = {
.command = "set_active",
.dispatch = okay
},
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_FORMAT)
[FASTBOOT_COMMAND_OEM_FORMAT] = {
.command = "oem format",
.dispatch = oem_format,
},
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_PARTCONF)
[FASTBOOT_COMMAND_OEM_PARTCONF] = {
.command = "oem partconf",
.dispatch = oem_partconf,
},
#endif
};
/**
* fastboot_handle_command - Handle fastboot command
*
* @cmd_string: Pointer to command string
* @response: Pointer to fastboot response buffer
*
* Return: Executed command, or -1 if not recognized
*/
int fastboot_handle_command(char *cmd_string, char *response)
{
int i;
char *cmd_parameter;
cmd_parameter = cmd_string;
strsep(&cmd_parameter, ":");
for (i = 0; i < FASTBOOT_COMMAND_COUNT; i++) {
if (!strcmp(commands[i].command, cmd_string)) {
if (commands[i].dispatch) {
commands[i].dispatch(cmd_parameter,
response);
return i;
} else {
break;
}
}
}
pr_err("command %s not recognized.\n", cmd_string);
fastboot_fail("unrecognized command", response);
return -1;
}
/**
* okay() - Send bare OKAY response
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*
* Send a bare OKAY fastboot response. This is used where the command is
* valid, but all the work is done after the response has been sent (e.g.
* boot, reboot etc.)
*/
static void okay(char *cmd_parameter, char *response)
{
fastboot_okay(NULL, response);
}
/**
* getvar() - Read a config/version variable
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void getvar(char *cmd_parameter, char *response)
{
fastboot_getvar(cmd_parameter, response);
}
/**
* fastboot_download() - Start a download transfer from the client
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void download(char *cmd_parameter, char *response)
{
char *tmp;
if (!cmd_parameter) {
fastboot_fail("Expected command parameter", response);
return;
}
fastboot_bytes_received = 0;
fastboot_bytes_expected = simple_strtoul(cmd_parameter, &tmp, 16);
if (fastboot_bytes_expected == 0) {
fastboot_fail("Expected nonzero image size", response);
return;
}
/*
* Nothing to download yet. Response is of the form:
* [DATA|FAIL]$cmd_parameter
*
* where cmd_parameter is an 8 digit hexadecimal number
*/
if (fastboot_bytes_expected > fastboot_buf_size) {
fastboot_fail(cmd_parameter, response);
} else {
printf("Starting download of %d bytes\n",
fastboot_bytes_expected);
fastboot_response("DATA", response, "%s", cmd_parameter);
}
}
/**
* fastboot_data_remaining() - return bytes remaining in current transfer
*
* Return: Number of bytes left in the current download
*/
u32 fastboot_data_remaining(void)
{
return fastboot_bytes_expected - fastboot_bytes_received;
}
/**
* fastboot_data_download() - Copy image data to fastboot_buf_addr.
*
* @fastboot_data: Pointer to received fastboot data
* @fastboot_data_len: Length of received fastboot data
* @response: Pointer to fastboot response buffer
*
* Copies image data from fastboot_data to fastboot_buf_addr. Writes to
* response. fastboot_bytes_received is updated to indicate the number
* of bytes that have been transferred.
*
* On completion sets image_size and ${filesize} to the total size of the
* downloaded image.
*/
void fastboot_data_download(const void *fastboot_data,
unsigned int fastboot_data_len,
char *response)
{
#define BYTES_PER_DOT 0x20000
u32 pre_dot_num, now_dot_num;
if (fastboot_data_len == 0 ||
(fastboot_bytes_received + fastboot_data_len) >
fastboot_bytes_expected) {
fastboot_fail("Received invalid data length",
response);
return;
}
/* Download data to fastboot_buf_addr */
memcpy(fastboot_buf_addr + fastboot_bytes_received,
fastboot_data, fastboot_data_len);
pre_dot_num = fastboot_bytes_received / BYTES_PER_DOT;
fastboot_bytes_received += fastboot_data_len;
now_dot_num = fastboot_bytes_received / BYTES_PER_DOT;
if (pre_dot_num != now_dot_num) {
putc('.');
if (!(now_dot_num % 74))
putc('\n');
}
*response = '\0';
}
/**
* fastboot_data_complete() - Mark current transfer complete
*
* @response: Pointer to fastboot response buffer
*
* Set image_size and ${filesize} to the total size of the downloaded image.
*/
void fastboot_data_complete(char *response)
{
/* Download complete. Respond with "OKAY" */
fastboot_okay(NULL, response);
printf("\ndownloading of %d bytes finished\n", fastboot_bytes_received);
image_size = fastboot_bytes_received;
env_set_hex("filesize", image_size);
fastboot_bytes_expected = 0;
fastboot_bytes_received = 0;
}
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
/**
* flash() - write the downloaded image to the indicated partition.
*
* @cmd_parameter: Pointer to partition name
* @response: Pointer to fastboot response buffer
*
* Writes the previously downloaded image to the partition indicated by
* cmd_parameter. Writes to response.
*/
static void flash(char *cmd_parameter, char *response)
{
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
fastboot_mmc_flash_write(cmd_parameter, fastboot_buf_addr, image_size,
response);
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_NAND)
fastboot_nand_flash_write(cmd_parameter, fastboot_buf_addr, image_size,
response);
#endif
}
/**
* erase() - erase the indicated partition.
*
* @cmd_parameter: Pointer to partition name
* @response: Pointer to fastboot response buffer
*
* Erases the partition indicated by cmd_parameter (clear to 0x00s). Writes
* to response.
*/
static void erase(char *cmd_parameter, char *response)
{
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
fastboot_mmc_erase(cmd_parameter, response);
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_NAND)
fastboot_nand_erase(cmd_parameter, response);
#endif
}
#endif
/**
* reboot_bootloader() - Sets reboot bootloader flag.
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void reboot_bootloader(char *cmd_parameter, char *response)
{
if (fastboot_set_reboot_flag(FASTBOOT_REBOOT_REASON_BOOTLOADER))
fastboot_fail("Cannot set reboot flag", response);
else
fastboot_okay(NULL, response);
}
/**
* reboot_fastbootd() - Sets reboot fastboot flag.
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void reboot_fastbootd(char *cmd_parameter, char *response)
{
if (fastboot_set_reboot_flag(FASTBOOT_REBOOT_REASON_FASTBOOTD))
fastboot_fail("Cannot set fastboot flag", response);
else
fastboot_okay(NULL, response);
}
/**
* reboot_recovery() - Sets reboot recovery flag.
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void reboot_recovery(char *cmd_parameter, char *response)
{
if (fastboot_set_reboot_flag(FASTBOOT_REBOOT_REASON_RECOVERY))
fastboot_fail("Cannot set recovery flag", response);
else
fastboot_okay(NULL, response);
}
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_FORMAT)
/**
* oem_format() - Execute the OEM format command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void oem_format(char *cmd_parameter, char *response)
{
char cmdbuf[32];
if (!env_get("partitions")) {
fastboot_fail("partitions not set", response);
} else {
sprintf(cmdbuf, "gpt write mmc %x $partitions",
CONFIG_FASTBOOT_FLASH_MMC_DEV);
if (run_command(cmdbuf, 0))
fastboot_fail("", response);
else
fastboot_okay(NULL, response);
}
}
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_PARTCONF)
/**
* oem_partconf() - Execute the OEM partconf command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void oem_partconf(char *cmd_parameter, char *response)
{
char cmdbuf[32];
if (!cmd_parameter) {
fastboot_fail("Expected command parameter", response);
return;
}
/* execute 'mmc partconfg' command with cmd_parameter arguments*/
snprintf(cmdbuf, sizeof(cmdbuf), "mmc partconf %x %s 0",
CONFIG_FASTBOOT_FLASH_MMC_DEV, cmd_parameter);
printf("Execute: %s\n", cmdbuf);
if (run_command(cmdbuf, 0))
fastboot_fail("Cannot set oem partconf", response);
else
fastboot_okay(NULL, response);
}
#endif
|