1 /***************************************************************************
2 * Copyright (C) 2007 by Pavel Chromy *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
17 ***************************************************************************/
25 #include <target/embeddedice.h>
28 struct arm_jtag
*jtag_info
;
30 unsigned int bufalign
;
33 /* flash_bank ocl 0 0 0 0 <target#> */
34 FLASH_BANK_COMMAND_HANDLER(ocl_flash_bank_command
)
36 struct arm7_9_common
*arm7_9
;
40 return ERROR_COMMAND_SYNTAX_ERROR
;
42 arm7_9
= target_to_arm7_9(bank
->target
);
43 if (!is_arm7_9(arm7_9
))
44 return ERROR_TARGET_INVALID
;
46 ocl
= bank
->driver_priv
= malloc(sizeof(struct ocl_priv
));
47 ocl
->jtag_info
= &arm7_9
->jtag_info
;
54 static int ocl_erase(struct flash_bank
*bank
, int first
, int last
)
56 struct ocl_priv
*ocl
= bank
->driver_priv
;
58 uint32_t dcc_buffer
[3];
60 /* check preconditions */
61 if (bank
->num_sectors
== 0)
62 return ERROR_FLASH_BANK_NOT_PROBED
;
64 if (bank
->target
->state
!= TARGET_RUNNING
) {
65 LOG_ERROR("target has to be running to communicate with the loader");
66 return ERROR_TARGET_NOT_RUNNING
;
69 if ((first
== 0) && (last
== bank
->num_sectors
- 1)) {
70 dcc_buffer
[0] = OCL_ERASE_ALL
;
71 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1);
72 if (retval
!= ERROR_OK
)
75 dcc_buffer
[0] = OCL_ERASE_BLOCK
;
76 dcc_buffer
[1] = first
;
78 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 3);
79 if (retval
!= ERROR_OK
)
83 /* wait for response, fixed timeout of 1 s */
84 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
85 if (retval
!= ERROR_OK
)
88 /* receive response */
89 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
+ 1, 1);
90 if (retval
!= ERROR_OK
)
93 if (dcc_buffer
[1] != OCL_CMD_DONE
) {
94 if (dcc_buffer
[0] == OCL_ERASE_ALL
)
95 LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08" PRIx32
"", dcc_buffer
[1]);
97 LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08" PRIx32
"", dcc_buffer
[1]);
98 return ERROR_FLASH_OPERATION_FAILED
;
104 static int ocl_write(struct flash_bank
*bank
, const uint8_t *buffer
, uint32_t offset
, uint32_t count
)
106 struct ocl_priv
*ocl
= bank
->driver_priv
;
108 uint32_t *dcc_buffer
;
109 uint32_t *dcc_bufptr
;
116 /* check preconditions */
117 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
118 return ERROR_FLASH_BANK_NOT_PROBED
;
120 if (bank
->target
->state
!= TARGET_RUNNING
) {
121 LOG_ERROR("target has to be running to communicate with the loader");
122 return ERROR_TARGET_NOT_RUNNING
;
125 /* allocate buffer for max. ocl buffer + overhead */
126 dcc_buffer
= malloc(sizeof(uint32_t)*(ocl
->buflen
/4 + 3));
129 if (count
+ (offset
% ocl
->bufalign
) > ocl
->buflen
)
130 runlen
= ocl
->buflen
- (offset
% ocl
->bufalign
);
134 dcc_buffer
[0] = OCL_FLASH_BLOCK
| runlen
;
135 dcc_buffer
[1] = offset
;
136 dcc_bufptr
= &dcc_buffer
[2];
138 *dcc_bufptr
= 0xffffffff;
139 byteofs
= (offset
% ocl
->bufalign
) % 4;
140 chksum
= OCL_CHKS_INIT
;
142 /* copy data to DCC buffer in proper byte order and properly aligned */
143 for (i
= 0; i
< runlen
; i
++) {
146 *dcc_bufptr
&= *(buffer
++) | 0xffffff00;
149 *dcc_bufptr
&= ((*(buffer
++)) << 8) | 0xffff00ff;
152 *dcc_bufptr
&= ((*(buffer
++)) << 16) | 0xff00ffff;
155 *dcc_bufptr
&= ((*(buffer
++)) << 24) | 0x00ffffff;
156 chksum
^= *(dcc_bufptr
++);
157 *dcc_bufptr
= 0xffffffff;
163 /* add the remaining word to checksum */
165 chksum
^= *(dcc_bufptr
++);
167 *(dcc_bufptr
++) = chksum
;
170 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, dcc_bufptr
-dcc_buffer
);
171 if (retval
!= ERROR_OK
) {
176 /* wait for response, fixed timeout of 1 s */
177 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
178 if (retval
!= ERROR_OK
) {
183 /* receive response */
184 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
185 if (retval
!= ERROR_OK
) {
190 if (dcc_buffer
[0] != OCL_CMD_DONE
) {
191 LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08" PRIx32
"", dcc_buffer
[0]);
193 return ERROR_FLASH_OPERATION_FAILED
;
204 static int ocl_probe(struct flash_bank
*bank
)
206 struct ocl_priv
*ocl
= bank
->driver_priv
;
208 uint32_t dcc_buffer
[1];
212 /* purge pending data in DCC */
213 embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
215 dcc_buffer
[0] = OCL_PROBE
;
216 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1);
217 if (retval
!= ERROR_OK
)
220 /* wait for response, fixed timeout of 1 s */
221 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
222 if (retval
!= ERROR_OK
)
225 /* receive response */
226 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
227 if (retval
!= ERROR_OK
)
230 if (dcc_buffer
[0] != OCL_CMD_DONE
) {
231 LOG_ERROR("loader response to OCL_PROBE 0x%08" PRIx32
"", dcc_buffer
[0]);
232 return ERROR_FLASH_OPERATION_FAILED
;
235 /* receive and fill in parameters, detection of loader is important, receive it one by one */
236 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
237 if (retval
!= ERROR_OK
)
239 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
240 if (retval
!= ERROR_OK
)
242 bank
->base
= dcc_buffer
[0];
244 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
245 if (retval
!= ERROR_OK
)
247 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
248 if (retval
!= ERROR_OK
)
250 bank
->size
= dcc_buffer
[0];
252 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
253 if (retval
!= ERROR_OK
)
255 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
256 if (retval
!= ERROR_OK
)
258 bank
->num_sectors
= dcc_buffer
[0];
260 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
261 if (retval
!= ERROR_OK
)
263 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
264 if (retval
!= ERROR_OK
)
266 ocl
->buflen
= dcc_buffer
[0] & 0xffff;
267 ocl
->bufalign
= dcc_buffer
[0] >> 16;
269 bank
->sectors
= realloc(bank
->sectors
, sizeof(struct flash_sector
)*bank
->num_sectors
);
270 if (bank
->num_sectors
== 0) {
271 LOG_ERROR("number of sectors shall be non zero value");
272 return ERROR_FLASH_BANK_INVALID
;
274 if (bank
->size
% bank
->num_sectors
) {
275 LOG_ERROR("bank size not divisible by number of sectors");
276 return ERROR_FLASH_BANK_INVALID
;
278 sectsize
= bank
->size
/ bank
->num_sectors
;
279 for (i
= 0; i
< bank
->num_sectors
; i
++) {
280 bank
->sectors
[i
].offset
= i
* sectsize
;
281 bank
->sectors
[i
].size
= sectsize
;
282 bank
->sectors
[i
].is_erased
= -1;
283 bank
->sectors
[i
].is_protected
= -1;
286 if (ocl
->bufalign
== 0)
289 if (ocl
->buflen
== 0) {
290 LOG_ERROR("buflen shall be non zero value");
291 return ERROR_FLASH_BANK_INVALID
;
294 if ((ocl
->bufalign
> ocl
->buflen
) || (ocl
->buflen
% ocl
->bufalign
)) {
295 LOG_ERROR("buflen is not multiple of bufalign");
296 return ERROR_FLASH_BANK_INVALID
;
299 if (ocl
->buflen
% 4) {
300 LOG_ERROR("buflen shall be divisible by 4");
301 return ERROR_FLASH_BANK_INVALID
;
307 static int ocl_auto_probe(struct flash_bank
*bank
)
309 struct ocl_priv
*ocl
= bank
->driver_priv
;
311 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
312 return ERROR_FLASH_BANK_NOT_PROBED
;
317 struct flash_driver ocl_flash
= {
319 .flash_bank_command
= ocl_flash_bank_command
,
322 .read
= default_flash_read
,
324 .erase_check
= default_flash_blank_check
,
325 .auto_probe
= ocl_auto_probe
,
326 .free_driver_priv
= default_flash_free_driver_priv
,
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