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 static int ocl_erase_check(struct flash_bank
*bank
)
38 static int ocl_protect_check(struct flash_bank
*bank
)
43 /* flash_bank ocl 0 0 0 0 <target#> */
44 FLASH_BANK_COMMAND_HANDLER(ocl_flash_bank_command
)
46 struct arm7_9_common
*arm7_9
;
50 return ERROR_COMMAND_SYNTAX_ERROR
;
52 arm7_9
= target_to_arm7_9(bank
->target
);
53 if (!is_arm7_9(arm7_9
))
54 return ERROR_TARGET_INVALID
;
56 ocl
= bank
->driver_priv
= malloc(sizeof(struct ocl_priv
));
57 ocl
->jtag_info
= &arm7_9
->jtag_info
;
64 static int ocl_erase(struct flash_bank
*bank
, int first
, int last
)
66 struct ocl_priv
*ocl
= bank
->driver_priv
;
68 uint32_t dcc_buffer
[3];
70 /* check preconditions */
71 if (bank
->num_sectors
== 0)
72 return ERROR_FLASH_BANK_NOT_PROBED
;
74 if (bank
->target
->state
!= TARGET_RUNNING
) {
75 LOG_ERROR("target has to be running to communicate with the loader");
76 return ERROR_TARGET_NOT_RUNNING
;
79 if ((first
== 0) && (last
== bank
->num_sectors
- 1)) {
80 dcc_buffer
[0] = OCL_ERASE_ALL
;
81 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1);
82 if (retval
!= ERROR_OK
)
85 dcc_buffer
[0] = OCL_ERASE_BLOCK
;
86 dcc_buffer
[1] = first
;
88 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 3);
89 if (retval
!= ERROR_OK
)
93 /* wait for response, fixed timeout of 1 s */
94 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
95 if (retval
!= ERROR_OK
)
98 /* receive response */
99 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
+ 1, 1);
100 if (retval
!= ERROR_OK
)
103 if (dcc_buffer
[1] != OCL_CMD_DONE
) {
104 if (dcc_buffer
[0] == OCL_ERASE_ALL
)
105 LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08" PRIx32
"", dcc_buffer
[1]);
107 LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08" PRIx32
"", dcc_buffer
[1]);
108 return ERROR_FLASH_OPERATION_FAILED
;
114 static int ocl_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
119 static int ocl_write(struct flash_bank
*bank
, const uint8_t *buffer
, uint32_t offset
, uint32_t count
)
121 struct ocl_priv
*ocl
= bank
->driver_priv
;
123 uint32_t *dcc_buffer
;
124 uint32_t *dcc_bufptr
;
131 /* check preconditions */
132 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
133 return ERROR_FLASH_BANK_NOT_PROBED
;
135 if (bank
->target
->state
!= TARGET_RUNNING
) {
136 LOG_ERROR("target has to be running to communicate with the loader");
137 return ERROR_TARGET_NOT_RUNNING
;
140 /* allocate buffer for max. ocl buffer + overhead */
141 dcc_buffer
= malloc(sizeof(uint32_t)*(ocl
->buflen
/4 + 3));
144 if (count
+ (offset
% ocl
->bufalign
) > ocl
->buflen
)
145 runlen
= ocl
->buflen
- (offset
% ocl
->bufalign
);
149 dcc_buffer
[0] = OCL_FLASH_BLOCK
| runlen
;
150 dcc_buffer
[1] = offset
;
151 dcc_bufptr
= &dcc_buffer
[2];
153 *dcc_bufptr
= 0xffffffff;
154 byteofs
= (offset
% ocl
->bufalign
) % 4;
155 chksum
= OCL_CHKS_INIT
;
157 /* copy data to DCC buffer in proper byte order and properly aligned */
158 for (i
= 0; i
< runlen
; i
++) {
161 *dcc_bufptr
&= *(buffer
++) | 0xffffff00;
164 *dcc_bufptr
&= ((*(buffer
++)) << 8) | 0xffff00ff;
167 *dcc_bufptr
&= ((*(buffer
++)) << 16) | 0xff00ffff;
170 *dcc_bufptr
&= ((*(buffer
++)) << 24) | 0x00ffffff;
171 chksum
^= *(dcc_bufptr
++);
172 *dcc_bufptr
= 0xffffffff;
178 /* add the remaining word to checksum */
180 chksum
^= *(dcc_bufptr
++);
182 *(dcc_bufptr
++) = chksum
;
185 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, dcc_bufptr
-dcc_buffer
);
186 if (retval
!= ERROR_OK
) {
191 /* wait for response, fixed timeout of 1 s */
192 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
193 if (retval
!= ERROR_OK
) {
198 /* receive response */
199 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
200 if (retval
!= ERROR_OK
) {
205 if (dcc_buffer
[0] != OCL_CMD_DONE
) {
206 LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08" PRIx32
"", dcc_buffer
[0]);
208 return ERROR_FLASH_OPERATION_FAILED
;
219 static int ocl_probe(struct flash_bank
*bank
)
221 struct ocl_priv
*ocl
= bank
->driver_priv
;
223 uint32_t dcc_buffer
[1];
227 /* purge pending data in DCC */
228 embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
230 dcc_buffer
[0] = OCL_PROBE
;
231 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1);
232 if (retval
!= ERROR_OK
)
235 /* wait for response, fixed timeout of 1 s */
236 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
237 if (retval
!= ERROR_OK
)
240 /* receive response */
241 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
242 if (retval
!= ERROR_OK
)
245 if (dcc_buffer
[0] != OCL_CMD_DONE
) {
246 LOG_ERROR("loader response to OCL_PROBE 0x%08" PRIx32
"", dcc_buffer
[0]);
247 return ERROR_FLASH_OPERATION_FAILED
;
250 /* receive and fill in parameters, detection of loader is important, receive it one by one */
251 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
252 if (retval
!= ERROR_OK
)
254 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
255 if (retval
!= ERROR_OK
)
257 bank
->base
= dcc_buffer
[0];
259 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
260 if (retval
!= ERROR_OK
)
262 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
263 if (retval
!= ERROR_OK
)
265 bank
->size
= dcc_buffer
[0];
267 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
268 if (retval
!= ERROR_OK
)
270 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
271 if (retval
!= ERROR_OK
)
273 bank
->num_sectors
= dcc_buffer
[0];
275 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
276 if (retval
!= ERROR_OK
)
278 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
279 if (retval
!= ERROR_OK
)
281 ocl
->buflen
= dcc_buffer
[0] & 0xffff;
282 ocl
->bufalign
= dcc_buffer
[0] >> 16;
284 bank
->sectors
= realloc(bank
->sectors
, sizeof(struct flash_sector
)*bank
->num_sectors
);
285 if (bank
->num_sectors
== 0) {
286 LOG_ERROR("number of sectors shall be non zero value");
287 return ERROR_FLASH_BANK_INVALID
;
289 if (bank
->size
% bank
->num_sectors
) {
290 LOG_ERROR("bank size not divisible by number of sectors");
291 return ERROR_FLASH_BANK_INVALID
;
293 sectsize
= bank
->size
/ bank
->num_sectors
;
294 for (i
= 0; i
< bank
->num_sectors
; i
++) {
295 bank
->sectors
[i
].offset
= i
* sectsize
;
296 bank
->sectors
[i
].size
= sectsize
;
297 bank
->sectors
[i
].is_erased
= -1;
298 bank
->sectors
[i
].is_protected
= -1;
301 if (ocl
->bufalign
== 0)
304 if (ocl
->buflen
== 0) {
305 LOG_ERROR("buflen shall be non zero value");
306 return ERROR_FLASH_BANK_INVALID
;
309 if ((ocl
->bufalign
> ocl
->buflen
) || (ocl
->buflen
% ocl
->bufalign
)) {
310 LOG_ERROR("buflen is not multiple of bufalign");
311 return ERROR_FLASH_BANK_INVALID
;
314 if (ocl
->buflen
% 4) {
315 LOG_ERROR("buflen shall be divisible by 4");
316 return ERROR_FLASH_BANK_INVALID
;
322 static int ocl_auto_probe(struct flash_bank
*bank
)
324 struct ocl_priv
*ocl
= bank
->driver_priv
;
326 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
327 return ERROR_FLASH_BANK_NOT_PROBED
;
332 struct flash_driver ocl_flash
= {
334 .flash_bank_command
= ocl_flash_bank_command
,
336 .protect
= ocl_protect
,
338 .read
= default_flash_read
,
340 .erase_check
= ocl_erase_check
,
341 .protect_check
= ocl_protect_check
,
342 .auto_probe
= ocl_auto_probe
,
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