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, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
19 ***************************************************************************/
27 #include <target/embeddedice.h>
30 struct arm_jtag
*jtag_info
;
32 unsigned int bufalign
;
35 static int ocl_erase_check(struct flash_bank
*bank
)
40 static int ocl_protect_check(struct flash_bank
*bank
)
45 /* flash_bank ocl 0 0 0 0 <target#> */
46 FLASH_BANK_COMMAND_HANDLER(ocl_flash_bank_command
)
48 struct arm7_9_common
*arm7_9
;
52 return ERROR_COMMAND_SYNTAX_ERROR
;
54 arm7_9
= target_to_arm7_9(bank
->target
);
55 if (!is_arm7_9(arm7_9
))
56 return ERROR_TARGET_INVALID
;
58 ocl
= bank
->driver_priv
= malloc(sizeof(struct ocl_priv
));
59 ocl
->jtag_info
= &arm7_9
->jtag_info
;
66 static int ocl_erase(struct flash_bank
*bank
, int first
, int last
)
68 struct ocl_priv
*ocl
= bank
->driver_priv
;
70 uint32_t dcc_buffer
[3];
72 /* check preconditions */
73 if (bank
->num_sectors
== 0)
74 return ERROR_FLASH_BANK_NOT_PROBED
;
76 if (bank
->target
->state
!= TARGET_RUNNING
) {
77 LOG_ERROR("target has to be running to communicate with the loader");
78 return ERROR_TARGET_NOT_RUNNING
;
81 if ((first
== 0) && (last
== bank
->num_sectors
- 1)) {
82 dcc_buffer
[0] = OCL_ERASE_ALL
;
83 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1);
84 if (retval
!= ERROR_OK
)
87 dcc_buffer
[0] = OCL_ERASE_BLOCK
;
88 dcc_buffer
[1] = first
;
90 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 3);
91 if (retval
!= ERROR_OK
)
95 /* wait for response, fixed timeout of 1 s */
96 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
97 if (retval
!= ERROR_OK
)
100 /* receive response */
101 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
+ 1, 1);
102 if (retval
!= ERROR_OK
)
105 if (dcc_buffer
[1] != OCL_CMD_DONE
) {
106 if (dcc_buffer
[0] == OCL_ERASE_ALL
)
107 LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08" PRIx32
"", dcc_buffer
[1]);
109 LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08" PRIx32
"", dcc_buffer
[1]);
110 return ERROR_FLASH_OPERATION_FAILED
;
116 static int ocl_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
121 static int ocl_write(struct flash_bank
*bank
, uint8_t *buffer
, uint32_t offset
, uint32_t count
)
123 struct ocl_priv
*ocl
= bank
->driver_priv
;
125 uint32_t *dcc_buffer
;
126 uint32_t *dcc_bufptr
;
133 /* check preconditions */
134 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
135 return ERROR_FLASH_BANK_NOT_PROBED
;
137 if (bank
->target
->state
!= TARGET_RUNNING
) {
138 LOG_ERROR("target has to be running to communicate with the loader");
139 return ERROR_TARGET_NOT_RUNNING
;
142 /* allocate buffer for max. ocl buffer + overhead */
143 dcc_buffer
= malloc(sizeof(uint32_t)*(ocl
->buflen
/4 + 3));
146 if (count
+ (offset
% ocl
->bufalign
) > ocl
->buflen
)
147 runlen
= ocl
->buflen
- (offset
% ocl
->bufalign
);
151 dcc_buffer
[0] = OCL_FLASH_BLOCK
| runlen
;
152 dcc_buffer
[1] = offset
;
153 dcc_bufptr
= &dcc_buffer
[2];
155 *dcc_bufptr
= 0xffffffff;
156 byteofs
= (offset
% ocl
->bufalign
) % 4;
157 chksum
= OCL_CHKS_INIT
;
159 /* copy data to DCC buffer in proper byte order and properly aligned */
160 for (i
= 0; i
< runlen
; i
++) {
163 *dcc_bufptr
&= *(buffer
++) | 0xffffff00;
166 *dcc_bufptr
&= ((*(buffer
++)) << 8) | 0xffff00ff;
169 *dcc_bufptr
&= ((*(buffer
++)) << 16) | 0xff00ffff;
172 *dcc_bufptr
&= ((*(buffer
++)) << 24) | 0x00ffffff;
173 chksum
^= *(dcc_bufptr
++);
174 *dcc_bufptr
= 0xffffffff;
180 /* add the remaining word to checksum */
182 chksum
^= *(dcc_bufptr
++);
184 *(dcc_bufptr
++) = chksum
;
187 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, dcc_bufptr
-dcc_buffer
);
188 if (retval
!= ERROR_OK
) {
193 /* wait for response, fixed timeout of 1 s */
194 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
195 if (retval
!= ERROR_OK
) {
200 /* receive response */
201 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
202 if (retval
!= ERROR_OK
) {
207 if (dcc_buffer
[0] != OCL_CMD_DONE
) {
208 LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08" PRIx32
"", dcc_buffer
[0]);
210 return ERROR_FLASH_OPERATION_FAILED
;
221 static int ocl_probe(struct flash_bank
*bank
)
223 struct ocl_priv
*ocl
= bank
->driver_priv
;
225 uint32_t dcc_buffer
[1];
229 /* purge pending data in DCC */
230 embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
232 dcc_buffer
[0] = OCL_PROBE
;
233 retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1);
234 if (retval
!= ERROR_OK
)
237 /* wait for response, fixed timeout of 1 s */
238 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000);
239 if (retval
!= ERROR_OK
)
242 /* receive response */
243 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
244 if (retval
!= ERROR_OK
)
247 if (dcc_buffer
[0] != OCL_CMD_DONE
) {
248 LOG_ERROR("loader response to OCL_PROBE 0x%08" PRIx32
"", dcc_buffer
[0]);
249 return ERROR_FLASH_OPERATION_FAILED
;
252 /* receive and fill in parameters, detection of loader is important, receive it one by one */
253 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
254 if (retval
!= ERROR_OK
)
256 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
257 if (retval
!= ERROR_OK
)
259 bank
->base
= dcc_buffer
[0];
261 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
262 if (retval
!= ERROR_OK
)
264 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
265 if (retval
!= ERROR_OK
)
267 bank
->size
= dcc_buffer
[0];
269 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
270 if (retval
!= ERROR_OK
)
272 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
273 if (retval
!= ERROR_OK
)
275 bank
->num_sectors
= dcc_buffer
[0];
277 retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0);
278 if (retval
!= ERROR_OK
)
280 retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
281 if (retval
!= ERROR_OK
)
283 ocl
->buflen
= dcc_buffer
[0] & 0xffff;
284 ocl
->bufalign
= dcc_buffer
[0] >> 16;
286 bank
->sectors
= realloc(bank
->sectors
, sizeof(struct flash_sector
)*bank
->num_sectors
);
287 if (bank
->num_sectors
== 0) {
288 LOG_ERROR("number of sectors shall be non zero value");
289 return ERROR_FLASH_BANK_INVALID
;
291 if (bank
->size
% bank
->num_sectors
) {
292 LOG_ERROR("bank size not divisible by number of sectors");
293 return ERROR_FLASH_BANK_INVALID
;
295 sectsize
= bank
->size
/ bank
->num_sectors
;
296 for (i
= 0; i
< bank
->num_sectors
; i
++) {
297 bank
->sectors
[i
].offset
= i
* sectsize
;
298 bank
->sectors
[i
].size
= sectsize
;
299 bank
->sectors
[i
].is_erased
= -1;
300 bank
->sectors
[i
].is_protected
= -1;
303 if (ocl
->bufalign
== 0)
306 if (ocl
->buflen
== 0) {
307 LOG_ERROR("buflen shall be non zero value");
308 return ERROR_FLASH_BANK_INVALID
;
311 if ((ocl
->bufalign
> ocl
->buflen
) || (ocl
->buflen
% ocl
->bufalign
)) {
312 LOG_ERROR("buflen is not multiple of bufalign");
313 return ERROR_FLASH_BANK_INVALID
;
316 if (ocl
->buflen
% 4) {
317 LOG_ERROR("buflen shall be divisible by 4");
318 return ERROR_FLASH_BANK_INVALID
;
324 static int ocl_info(struct flash_bank
*bank
, char *buf
, int buf_size
)
329 static int ocl_auto_probe(struct flash_bank
*bank
)
331 struct ocl_priv
*ocl
= bank
->driver_priv
;
333 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
334 return ERROR_FLASH_BANK_NOT_PROBED
;
339 struct flash_driver ocl_flash
= {
341 .flash_bank_command
= ocl_flash_bank_command
,
343 .protect
= ocl_protect
,
345 .read
= default_flash_read
,
347 .erase_check
= ocl_erase_check
,
348 .protect_check
= ocl_protect_check
,
350 .auto_probe
= ocl_auto_probe
,
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