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 ***************************************************************************/
24 #include "replacements.h"
31 #include "binarybuffer.h"
33 #include "embeddedice.h"
34 #include "arm7_9_common.h"
40 static int ocl_register_commands(struct command_context_s
*cmd_ctx
);
41 static int ocl_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
);
42 static int ocl_erase(struct flash_bank_s
*bank
, int first
, int last
);
43 static int ocl_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
);
44 static int ocl_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
);
45 static int ocl_probe(struct flash_bank_s
*bank
);
46 static int ocl_erase_check(struct flash_bank_s
*bank
);
47 static int ocl_protect_check(struct flash_bank_s
*bank
);
48 static int ocl_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
);
49 static int ocl_auto_probe(struct flash_bank_s
*bank
);
51 flash_driver_t ocl_flash
=
54 .register_commands
= ocl_register_commands
,
55 .flash_bank_command
= ocl_flash_bank_command
,
57 .protect
= ocl_protect
,
60 .erase_check
= ocl_erase_check
,
61 .protect_check
= ocl_protect_check
,
63 .auto_probe
= ocl_auto_probe
66 typedef struct ocl_priv_s
68 arm_jtag_t
*jtag_info
;
73 static int ocl_register_commands(struct command_context_s
*cmd_ctx
)
78 static int ocl_erase_check(struct flash_bank_s
*bank
)
83 static int ocl_protect_check(struct flash_bank_s
*bank
)
88 /* flash_bank ocl 0 0 0 0 <target#> */
89 static int ocl_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
)
92 armv4_5_common_t
*armv4_5
;
93 arm7_9_common_t
*arm7_9
;
98 LOG_WARNING("incomplete flash_bank ocl configuration");
99 return ERROR_FLASH_BANK_INVALID
;
102 if ((retval
= arm7_9_get_arch_pointers(bank
->target
, &armv4_5
, &arm7_9
)) != ERROR_OK
)
105 ocl
= bank
->driver_priv
= malloc(sizeof(ocl_priv_t
));
106 ocl
->jtag_info
= &arm7_9
->jtag_info
;
113 static int ocl_erase(struct flash_bank_s
*bank
, int first
, int last
)
115 ocl_priv_t
*ocl
= bank
->driver_priv
;
119 /* check preconditions */
120 if (bank
->num_sectors
== 0)
121 return ERROR_FLASH_BANK_NOT_PROBED
;
123 if (bank
->target
->state
!= TARGET_RUNNING
)
125 LOG_ERROR("target has to be running to communicate with the loader");
126 return ERROR_TARGET_NOT_RUNNING
;
129 if ((first
== 0) && (last
== bank
->num_sectors
- 1))
131 dcc_buffer
[0] = OCL_ERASE_ALL
;
132 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
137 dcc_buffer
[0] = OCL_ERASE_BLOCK
;
138 dcc_buffer
[1] = first
;
139 dcc_buffer
[2] = last
;
140 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 3) != ERROR_OK
))
144 /* wait for response, fixed timeout of 1 s */
145 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000) != ERROR_OK
))
147 if (retval
== ERROR_TARGET_TIMEOUT
)
148 LOG_ERROR("loader not responding");
152 /* receive response */
153 if ((retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
+1, 1) != ERROR_OK
))
156 if (dcc_buffer
[1] != OCL_CMD_DONE
)
158 if (dcc_buffer
[0] == OCL_ERASE_ALL
)
159 LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08X", dcc_buffer
[1]);
161 LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08X", dcc_buffer
[1]);
162 return ERROR_FLASH_OPERATION_FAILED
;
168 static int ocl_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
)
173 static int ocl_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
)
175 ocl_priv_t
*ocl
= bank
->driver_priv
;
185 /* check preconditions */
186 if (ocl
->buflen
== 0 || ocl
->bufalign
==0)
187 return ERROR_FLASH_BANK_NOT_PROBED
;
189 if (bank
->target
->state
!= TARGET_RUNNING
)
191 LOG_ERROR("target has to be running to communicate with the loader");
192 return ERROR_TARGET_NOT_RUNNING
;
195 /* allocate buffer for max. ocl buffer + overhead */
196 dcc_buffer
= malloc(sizeof(u32
)*(ocl
->buflen
/4+3));
200 if (count
+ (offset
% ocl
->bufalign
) > ocl
->buflen
)
201 runlen
= ocl
->buflen
- (offset
% ocl
->bufalign
);
205 dcc_buffer
[0] = OCL_FLASH_BLOCK
| runlen
;
206 dcc_buffer
[1] = offset
;
207 dcc_bufptr
= &dcc_buffer
[2];
209 *dcc_bufptr
= 0xffffffff;
210 byteofs
= (offset
% ocl
->bufalign
) % 4;
211 chksum
= OCL_CHKS_INIT
;
213 /* copy data to DCC buffer in proper byte order and properly aligned */
214 for (i
=0; i
<runlen
; i
++)
219 *dcc_bufptr
&= *(buffer
++) | 0xffffff00;
222 *dcc_bufptr
&= ((*(buffer
++))<<8) | 0xffff00ff;
225 *dcc_bufptr
&= ((*(buffer
++))<<16) | 0xff00ffff;
228 *dcc_bufptr
&= ((*(buffer
++))<<24) | 0x00ffffff;
229 chksum
^= *(dcc_bufptr
++);
230 *dcc_bufptr
= 0xffffffff;
236 /* add the remaining word to checksum */
238 chksum
^= *(dcc_bufptr
++);
240 *(dcc_bufptr
++) = chksum
;
243 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, dcc_bufptr
-dcc_buffer
)) != ERROR_OK
)
249 /* wait for response, fixed timeout of 1 s */
250 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000) != ERROR_OK
))
252 if (retval
== ERROR_TARGET_TIMEOUT
)
253 LOG_ERROR("loader not responding");
258 /* receive response */
259 if ((retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
265 if (dcc_buffer
[0] != OCL_CMD_DONE
)
267 LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08X", dcc_buffer
[0]);
269 return ERROR_FLASH_OPERATION_FAILED
;
280 static int ocl_probe(struct flash_bank_s
*bank
)
282 ocl_priv_t
*ocl
= bank
->driver_priv
;
288 /* purge pending data in DCC */
289 embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1);
291 dcc_buffer
[0] = OCL_PROBE
;
292 if ((retval
= embeddedice_send(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
295 /* wait for response, fixed timeout of 1 s */
296 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 1000) != ERROR_OK
))
298 if (retval
== ERROR_TARGET_TIMEOUT
)
299 LOG_ERROR("loader not responding");
303 /* receive response */
304 if ((retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
307 if (dcc_buffer
[0] != OCL_CMD_DONE
)
309 LOG_ERROR("loader response to OCL_PROBE 0x%08X", dcc_buffer
[0]);
310 return ERROR_FLASH_OPERATION_FAILED
;
313 /* receive and fill in parameters, detection of loader is important, receive it one by one */
314 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
315 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
317 bank
->base
= dcc_buffer
[0];
319 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
320 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
322 bank
->size
= dcc_buffer
[0];
324 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
325 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
327 bank
->num_sectors
= dcc_buffer
[0];
329 if ((retval
= embeddedice_handshake(ocl
->jtag_info
, EICE_COMM_CTRL_WBIT
, 0) != ERROR_OK
)
330 || (retval
= embeddedice_receive(ocl
->jtag_info
, dcc_buffer
, 1) != ERROR_OK
))
332 ocl
->buflen
= dcc_buffer
[0] & 0xffff;
333 ocl
->bufalign
= dcc_buffer
[0] >> 16;
335 bank
->sectors
= realloc(bank
->sectors
, sizeof(flash_sector_t
)*bank
->num_sectors
);
336 if (bank
->num_sectors
== 0)
338 LOG_ERROR("number of sectors shall be non zero value");
339 return ERROR_FLASH_BANK_INVALID
;
341 if (bank
->size
% bank
->num_sectors
) {
342 LOG_ERROR("bank size not divisible by number of sectors");
343 return ERROR_FLASH_BANK_INVALID
;
345 sectsize
= bank
->size
/ bank
->num_sectors
;
346 for (i
=0; i
<bank
->num_sectors
; i
++)
348 bank
->sectors
[i
].offset
= i
* sectsize
;
349 bank
->sectors
[i
].size
= sectsize
;
350 bank
->sectors
[i
].is_erased
= -1;
351 bank
->sectors
[i
].is_protected
= -1;
354 if (ocl
->bufalign
== 0)
357 if (ocl
->buflen
== 0)
359 LOG_ERROR("buflen shall be non zero value");
360 return ERROR_FLASH_BANK_INVALID
;
363 if ((ocl
->bufalign
> ocl
->buflen
) || (ocl
->buflen
% ocl
->bufalign
))
365 LOG_ERROR("buflen is not multiple of bufalign");
366 return ERROR_FLASH_BANK_INVALID
;
371 LOG_ERROR("buflen shall be divisible by 4");
372 return ERROR_FLASH_BANK_INVALID
;
378 static int ocl_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
)
383 static int ocl_auto_probe(struct flash_bank_s
*bank
)
385 ocl_priv_t
*ocl
= bank
->driver_priv
;
387 if (ocl
->buflen
== 0 || ocl
->bufalign
==0)
388 return ERROR_FLASH_BANK_NOT_PROBED
;
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