Outline ![]()
Files ![]()
loading...
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
// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2007 by Pavel Chromy *
* chromy@asix.cz *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
#include "ocl.h"
#include <target/embeddedice.h>
struct ocl_priv {
struct arm_jtag *jtag_info;
unsigned int buflen;
unsigned int bufalign;
};
/* flash_bank ocl 0 0 0 0 <target#> */
FLASH_BANK_COMMAND_HANDLER(ocl_flash_bank_command)
{
struct arm7_9_common *arm7_9;
struct ocl_priv *ocl;
if (CMD_ARGC < 6)
return ERROR_COMMAND_SYNTAX_ERROR;
arm7_9 = target_to_arm7_9(bank->target);
if (!is_arm7_9(arm7_9))
return ERROR_TARGET_INVALID;
ocl = bank->driver_priv = malloc(sizeof(struct ocl_priv));
ocl->jtag_info = &arm7_9->jtag_info;
ocl->buflen = 0;
ocl->bufalign = 1;
return ERROR_OK;
}
static int ocl_erase(struct flash_bank *bank, unsigned int first,
unsigned int last)
{
struct ocl_priv *ocl = bank->driver_priv;
int retval;
uint32_t dcc_buffer[3];
/* check preconditions */
if (bank->num_sectors == 0)
return ERROR_FLASH_BANK_NOT_PROBED;
if (bank->target->state != TARGET_RUNNING) {
LOG_ERROR("target has to be running to communicate with the loader");
return ERROR_TARGET_NOT_RUNNING;
}
if ((first == 0) && (last == bank->num_sectors - 1)) {
dcc_buffer[0] = OCL_ERASE_ALL;
retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK)
return retval;
} else {
dcc_buffer[0] = OCL_ERASE_BLOCK;
dcc_buffer[1] = first;
dcc_buffer[2] = last;
retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 3);
if (retval != ERROR_OK)
return retval;
}
/* wait for response, fixed timeout of 1 s */
retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000);
if (retval != ERROR_OK)
return retval;
/* receive response */
retval = embeddedice_receive(ocl->jtag_info, dcc_buffer + 1, 1);
if (retval != ERROR_OK)
return retval;
if (dcc_buffer[1] != OCL_CMD_DONE) {
if (dcc_buffer[0] == OCL_ERASE_ALL)
LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08" PRIx32 "", dcc_buffer[1]);
else
LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08" PRIx32 "", dcc_buffer[1]);
return ERROR_FLASH_OPERATION_FAILED;
}
return ERROR_OK;
}
static int ocl_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
{
struct ocl_priv *ocl = bank->driver_priv;
int retval;
uint32_t *dcc_buffer;
uint32_t *dcc_bufptr;
int byteofs;
int runlen;
uint32_t chksum;
int i;
/* check preconditions */
if (ocl->buflen == 0 || ocl->bufalign == 0)
return ERROR_FLASH_BANK_NOT_PROBED;
if (bank->target->state != TARGET_RUNNING) {
LOG_ERROR("target has to be running to communicate with the loader");
return ERROR_TARGET_NOT_RUNNING;
}
/* allocate buffer for max. ocl buffer + overhead */
dcc_buffer = malloc(sizeof(uint32_t)*(ocl->buflen/4 + 3));
while (count) {
if (count + (offset % ocl->bufalign) > ocl->buflen)
runlen = ocl->buflen - (offset % ocl->bufalign);
else
runlen = count;
dcc_buffer[0] = OCL_FLASH_BLOCK | runlen;
dcc_buffer[1] = offset;
dcc_bufptr = &dcc_buffer[2];
*dcc_bufptr = 0xffffffff;
byteofs = (offset % ocl->bufalign) % 4;
chksum = OCL_CHKS_INIT;
/* copy data to DCC buffer in proper byte order and properly aligned */
for (i = 0; i < runlen; i++) {
switch (byteofs++) {
case 0:
*dcc_bufptr &= *(buffer++) | 0xffffff00;
break;
case 1:
*dcc_bufptr &= ((*(buffer++)) << 8) | 0xffff00ff;
break;
case 2:
*dcc_bufptr &= ((*(buffer++)) << 16) | 0xff00ffff;
break;
case 3:
*dcc_bufptr &= ((*(buffer++)) << 24) | 0x00ffffff;
chksum ^= *(dcc_bufptr++);
*dcc_bufptr = 0xffffffff;
byteofs = 0;
break;
}
}
/* add the remaining word to checksum */
if (byteofs)
chksum ^= *(dcc_bufptr++);
*(dcc_bufptr++) = chksum;
/* send the data */
retval = embeddedice_send(ocl->jtag_info, dcc_buffer, dcc_bufptr-dcc_buffer);
if (retval != ERROR_OK) {
free(dcc_buffer);
return retval;
}
/* wait for response, fixed timeout of 1 s */
retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000);
if (retval != ERROR_OK) {
free(dcc_buffer);
return retval;
}
/* receive response */
retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK) {
free(dcc_buffer);
return retval;
}
if (dcc_buffer[0] != OCL_CMD_DONE) {
LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08" PRIx32 "", dcc_buffer[0]);
free(dcc_buffer);
return ERROR_FLASH_OPERATION_FAILED;
}
count -= runlen;
offset += runlen;
}
free(dcc_buffer);
return ERROR_OK;
}
static int ocl_probe(struct flash_bank *bank)
{
struct ocl_priv *ocl = bank->driver_priv;
int retval;
uint32_t dcc_buffer[1];
int sectsize;
/* purge pending data in DCC */
embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
dcc_buffer[0] = OCL_PROBE;
retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK)
return retval;
/* wait for response, fixed timeout of 1 s */
retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000);
if (retval != ERROR_OK)
return retval;
/* receive response */
retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK)
return retval;
if (dcc_buffer[0] != OCL_CMD_DONE) {
LOG_ERROR("loader response to OCL_PROBE 0x%08" PRIx32 "", dcc_buffer[0]);
return ERROR_FLASH_OPERATION_FAILED;
}
/* receive and fill in parameters, detection of loader is important, receive it one by one */
retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
if (retval != ERROR_OK)
return retval;
retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK)
return retval;
bank->base = dcc_buffer[0];
retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
if (retval != ERROR_OK)
return retval;
retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK)
return retval;
bank->size = dcc_buffer[0];
retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
if (retval != ERROR_OK)
return retval;
retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK)
return retval;
bank->num_sectors = dcc_buffer[0];
retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
if (retval != ERROR_OK)
return retval;
retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
if (retval != ERROR_OK)
return retval;
ocl->buflen = dcc_buffer[0] & 0xffff;
ocl->bufalign = dcc_buffer[0] >> 16;
bank->sectors = realloc(bank->sectors, sizeof(struct flash_sector)*bank->num_sectors);
if (bank->num_sectors == 0) {
LOG_ERROR("number of sectors shall be non zero value");
return ERROR_FLASH_BANK_INVALID;
}
if (bank->size % bank->num_sectors) {
LOG_ERROR("bank size not divisible by number of sectors");
return ERROR_FLASH_BANK_INVALID;
}
sectsize = bank->size / bank->num_sectors;
for (unsigned int i = 0; i < bank->num_sectors; i++) {
bank->sectors[i].offset = i * sectsize;
bank->sectors[i].size = sectsize;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = -1;
}
if (ocl->bufalign == 0)
ocl->bufalign = 1;
if (ocl->buflen == 0) {
LOG_ERROR("buflen shall be non zero value");
return ERROR_FLASH_BANK_INVALID;
}
if ((ocl->bufalign > ocl->buflen) || (ocl->buflen % ocl->bufalign)) {
LOG_ERROR("buflen is not multiple of bufalign");
return ERROR_FLASH_BANK_INVALID;
}
if (ocl->buflen % 4) {
LOG_ERROR("buflen shall be divisible by 4");
return ERROR_FLASH_BANK_INVALID;
}
return ERROR_OK;
}
static int ocl_auto_probe(struct flash_bank *bank)
{
struct ocl_priv *ocl = bank->driver_priv;
if (ocl->buflen == 0 || ocl->bufalign == 0)
return ERROR_FLASH_BANK_NOT_PROBED;
return ERROR_OK;
}
const struct flash_driver ocl_flash = {
.name = "ocl",
.flash_bank_command = ocl_flash_bank_command,
.erase = ocl_erase,
.write = ocl_write,
.read = default_flash_read,
.probe = ocl_probe,
.erase_check = default_flash_blank_check,
.auto_probe = ocl_auto_probe,
.free_driver_priv = default_flash_free_driver_priv,
};
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
Click anywhere in the source to view detailed information here...