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 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
26 #include <target/embeddedice.h>
31 struct arm_jtag
*jtag_info
;
33 unsigned int bufalign
;
36 static int ocl_erase_check(struct flash_bank
*bank
)
41 static int ocl_protect_check(struct flash_bank
*bank
)
46 /* flash_bank ocl 0 0 0 0 <target#> */
47 FLASH_BANK_COMMAND_HANDLER(ocl_flash_bank_command
)
49 struct arm7_9_common
*arm7_9
;
54 return ERROR_COMMAND_SYNTAX_ERROR
;
57 arm7_9
= target_to_arm7_9(bank
->target
);
58 if (!is_arm7_9(arm7_9
))
59 return ERROR_TARGET_INVALID
;
61 ocl
= bank
->driver_priv
= malloc(sizeof(struct ocl_priv
));
62 ocl
->jtag_info
= &arm7_9
->jtag_info
;
69 static int ocl_erase(struct flash_bank
*bank
, int first
, int last
)
71 struct ocl_priv
*ocl
= bank
->driver_priv
;
73 uint32_t dcc_buffer
[3];
75 /* check preconditions */
76 if (bank
->num_sectors
== 0)
77 return ERROR_FLASH_BANK_NOT_PROBED
;
79 if (bank
->target
->state
!= TARGET_RUNNING
)
81 LOG_ERROR("target has to be running to communicate with the loader");
82 return ERROR_TARGET_NOT_RUNNING
;
85 if ((first
== 0) && (last
== bank
->num_sectors
- 1))
87 dcc_buffer
[0] = OCL_ERASE_ALL
;
88 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
93 dcc_buffer
[0] = OCL_ERASE_BLOCK
;
94 dcc_buffer
[1] = first
;
96 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 3) != ERROR_OK
))
100 /* wait for response, fixed timeout of 1 s */
101 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000) != ERROR_OK
))
106 /* receive response */
107 if ((retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
+ 1, 1) != ERROR_OK
))
110 if (dcc_buffer
[1] != OCL_CMD_DONE
)
112 if (dcc_buffer
[0] == OCL_ERASE_ALL
)
113 LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08" PRIx32
"", dcc_buffer
[1]);
115 LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08" PRIx32
"", dcc_buffer
[1]);
116 return ERROR_FLASH_OPERATION_FAILED
;
122 static int ocl_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
127 static int ocl_write(struct flash_bank
*bank
, uint8_t *buffer
, uint32_t offset
, uint32_t count
)
129 struct ocl_priv
*ocl
= bank
->driver_priv
;
131 uint32_t *dcc_buffer
;
132 uint32_t *dcc_bufptr
;
139 /* check preconditions */
140 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
141 return ERROR_FLASH_BANK_NOT_PROBED
;
143 if (bank
->target
->state
!= TARGET_RUNNING
)
145 LOG_ERROR("target has to be running to communicate with the loader");
146 return ERROR_TARGET_NOT_RUNNING
;
149 /* allocate buffer for max. ocl buffer + overhead */
150 dcc_buffer
= malloc(sizeof(uint32_t)*(ocl
->buflen
/4 + 3));
154 if (count
+ (offset
% ocl
->bufalign
) > ocl
->buflen
)
155 runlen
= ocl
->buflen
- (offset
% ocl
->bufalign
);
159 dcc_buffer
[0] = OCL_FLASH_BLOCK
| runlen
;
160 dcc_buffer
[1] = offset
;
161 dcc_bufptr
= &dcc_buffer
[2];
163 *dcc_bufptr
= 0xffffffff;
164 byteofs
= (offset
% ocl
->bufalign
) % 4;
165 chksum
= OCL_CHKS_INIT
;
167 /* copy data to DCC buffer in proper byte order and properly aligned */
168 for (i
= 0; i
< runlen
; i
++)
173 *dcc_bufptr
&= *(buffer
++) | 0xffffff00;
176 *dcc_bufptr
&= ((*(buffer
++)) << 8) | 0xffff00ff;
179 *dcc_bufptr
&= ((*(buffer
++)) << 16) | 0xff00ffff;
182 *dcc_bufptr
&= ((*(buffer
++)) << 24) | 0x00ffffff;
183 chksum
^= *(dcc_bufptr
++);
184 *dcc_bufptr
= 0xffffffff;
190 /* add the remaining word to checksum */
192 chksum
^= *(dcc_bufptr
++);
194 *(dcc_bufptr
++) = chksum
;
197 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, dcc_bufptr
-dcc_buffer
)) != ERROR_OK
)
203 /* wait for response, fixed timeout of 1 s */
204 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000) != ERROR_OK
))
210 /* receive response */
211 if ((retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
217 if (dcc_buffer
[0] != OCL_CMD_DONE
)
219 LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08" PRIx32
"", dcc_buffer
[0]);
221 return ERROR_FLASH_OPERATION_FAILED
;
232 static int ocl_probe(struct flash_bank
*bank
)
234 struct ocl_priv
*ocl
= bank
->driver_priv
;
236 uint32_t dcc_buffer
[1];
240 /* purge pending data in DCC */
241 embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
243 dcc_buffer
[0] = OCL_PROBE
;
244 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
247 /* wait for response, fixed timeout of 1 s */
248 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000) != ERROR_OK
))
253 /* receive response */
254 if ((retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
257 if (dcc_buffer
[0] != OCL_CMD_DONE
)
259 LOG_ERROR("loader response to OCL_PROBE 0x%08" PRIx32
"", dcc_buffer
[0]);
260 return ERROR_FLASH_OPERATION_FAILED
;
263 /* receive and fill in parameters, detection of loader is important, receive it one by one */
264 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
265 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
267 bank
->base
= dcc_buffer
[0];
269 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
270 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
272 bank
->size
= dcc_buffer
[0];
274 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
275 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
277 bank
->num_sectors
= dcc_buffer
[0];
279 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
280 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
282 ocl
->buflen
= dcc_buffer
[0] & 0xffff;
283 ocl
->bufalign
= dcc_buffer
[0] >> 16;
285 bank
->sectors
= realloc(bank
->sectors
, sizeof(struct flash_sector
)*bank
->num_sectors
);
286 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
++)
298 bank
->sectors
[i
].offset
= i
* sectsize
;
299 bank
->sectors
[i
].size
= sectsize
;
300 bank
->sectors
[i
].is_erased
= -1;
301 bank
->sectors
[i
].is_protected
= -1;
304 if (ocl
->bufalign
== 0)
307 if (ocl
->buflen
== 0)
309 LOG_ERROR("buflen shall be non zero value");
310 return ERROR_FLASH_BANK_INVALID
;
313 if ((ocl
->bufalign
> ocl
->buflen
) || (ocl
->buflen
% ocl
->bufalign
))
315 LOG_ERROR("buflen is not multiple of bufalign");
316 return ERROR_FLASH_BANK_INVALID
;
321 LOG_ERROR("buflen shall be divisible by 4");
322 return ERROR_FLASH_BANK_INVALID
;
328 static int ocl_info(struct flash_bank
*bank
, char *buf
, int buf_size
)
333 static int ocl_auto_probe(struct flash_bank
*bank
)
335 struct ocl_priv
*ocl
= bank
->driver_priv
;
337 if (ocl
->buflen
== 0 || ocl
->bufalign
== 0)
338 return ERROR_FLASH_BANK_NOT_PROBED
;
343 struct flash_driver ocl_flash
= {
345 .flash_bank_command
= ocl_flash_bank_command
,
347 .protect
= ocl_protect
,
349 .read
= default_flash_read
,
351 .erase_check
= ocl_erase_check
,
352 .protect_check
= ocl_protect_check
,
354 .auto_probe
= ocl_auto_probe
,
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