1 /***************************************************************************
2 * Copyright (C) 2011 by Rodrigo L. Rosa *
3 * rodrigorosa.LG@gmail.com *
5 * Based on a file written by: *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
15 * This program is distributed in the hope that it will be useful, *
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
18 * GNU General Public License for more details. *
20 * You should have received a copy of the GNU General Public License *
21 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
22 ***************************************************************************/
25 * @file dsp5680xx_flash.c
26 * @author Rodrigo L. Rosa <rodrigorosa.LG@gmail.com>
27 * @date Thu Jun 9 18:21:58 2011
29 * @brief This file implements the basic functions to run flashing commands
30 * from the TCL interface.
31 * It allows the user to flash the Freescale 5680xx DSP.
41 #include <helper/binarybuffer.h>
42 #include <helper/time_support.h>
43 #include <target/algorithm.h>
44 #include <target/dsp5680xx.h>
46 static int dsp5680xx_build_sector_list(struct flash_bank
*bank
)
48 uint32_t offset
= HFM_FLASH_BASE_ADDR
;
50 bank
->sectors
= malloc(sizeof(struct flash_sector
) * bank
->num_sectors
);
53 for (i
= 0; i
< bank
->num_sectors
; ++i
) {
54 bank
->sectors
[i
].offset
= i
* HFM_SECTOR_SIZE
;
55 bank
->sectors
[i
].size
= HFM_SECTOR_SIZE
;
56 offset
+= bank
->sectors
[i
].size
;
57 bank
->sectors
[i
].is_erased
= -1;
58 bank
->sectors
[i
].is_protected
= -1;
60 LOG_USER("%s not tested yet.", __func__
);
65 /* flash bank dsp5680xx 0 0 0 0 <target#> */
66 FLASH_BANK_COMMAND_HANDLER(dsp5680xx_flash_bank_command
)
68 bank
->base
= HFM_FLASH_BASE_ADDR
;
69 bank
->size
= HFM_SIZE_BYTES
; /* top 4k not accessible */
70 bank
->num_sectors
= HFM_SECTOR_COUNT
;
71 dsp5680xx_build_sector_list(bank
);
77 * A memory mapped register (PROT) holds information regarding sector protection.
78 * Protection refers to undesired core access.
79 * The value in this register is loaded from flash upon reset.
85 static int dsp5680xx_flash_protect_check(struct flash_bank
*bank
)
87 int retval
= ERROR_OK
;
89 uint16_t protected = 0;
91 retval
= dsp5680xx_f_protect_check(bank
->target
, &protected);
92 if (retval
!= ERROR_OK
) {
93 for (int i
= 0; i
< HFM_SECTOR_COUNT
; i
++)
94 bank
->sectors
[i
].is_protected
= -1;
97 for (int i
= 0; i
< HFM_SECTOR_COUNT
/ 2; i
++) {
99 bank
->sectors
[2 * i
].is_protected
= 1;
100 bank
->sectors
[2 * i
+ 1].is_protected
= 1;
102 bank
->sectors
[2 * i
].is_protected
= 0;
103 bank
->sectors
[2 * i
+ 1].is_protected
= 0;
105 protected = (protected >> 1);
111 * Protection funcionality is not implemented.
112 * The current implementation applies/removes security on the chip.
113 * The chip is effectively secured/unsecured after the first reset
114 * following the execution of this function.
117 * @param set Apply or remove security on the chip.
118 * @param first This parameter is ignored.
119 * @param last This parameter is ignored.
123 static int dsp5680xx_flash_protect(struct flash_bank
*bank
, int set
, int first
,
127 * This applies security to flash module after next reset, it does
128 * not actually apply protection (protection refers to undesired access from the core)
133 retval
= dsp5680xx_f_lock(bank
->target
);
135 retval
= dsp5680xx_f_unlock(bank
->target
);
136 if (retval
== ERROR_OK
) {
137 /* mark all as erased */
138 for (int i
= 0; i
<= (HFM_SECTOR_COUNT
- 1); i
++)
139 /* FM does not recognize it as erased if erased via JTAG. */
140 bank
->sectors
[i
].is_erased
= 1;
147 * The dsp5680xx use word addressing. The "/2" that appear in the following code
148 * are a workaround for the fact that OpenOCD uses byte addressing.
151 * @param buffer Data to write to flash.
153 * @param count In bytes (2 bytes per address).
157 static int dsp5680xx_flash_write(struct flash_bank
*bank
, const uint8_t* buffer
,
158 uint32_t offset
, uint32_t count
)
162 if ((offset
+ count
/ 2) > bank
->size
) {
163 LOG_ERROR("%s: Flash bank cannot fit data.", __func__
);
168 * Writing to odd addresses not supported.
169 * This chip uses word addressing, Openocd only supports byte addressing.
170 * The workaround results in disabling writing to odd byte addresses
172 LOG_ERROR("%s: Writing to odd addresses not supported for this target", __func__
);
175 retval
= dsp5680xx_f_wr(bank
->target
, buffer
, bank
->base
+ offset
/ 2, count
, 0);
178 for (addr_word
= bank
->base
+ offset
/ 2; addr_word
< count
/ 2;
179 addr_word
+= (HFM_SECTOR_SIZE
/ 2)) {
180 if (retval
== ERROR_OK
)
181 bank
->sectors
[addr_word
/ (HFM_SECTOR_SIZE
/ 2)].is_erased
= 0;
183 bank
->sectors
[addr_word
/ (HFM_SECTOR_SIZE
/ 2)].is_erased
= -1;
188 static int dsp5680xx_probe(struct flash_bank
*bank
)
190 LOG_DEBUG("%s not implemented", __func__
);
195 * The flash module (FM) on the dsp5680xx supports both individual sector
196 * and mass erase of the flash memory.
197 * If this function is called with @first == @last == 0 or if @first is the
198 * first sector (#0) and @last is the last sector then the mass erase command
199 * is executed (much faster than erasing each sector individually).
207 static int dsp5680xx_flash_erase(struct flash_bank
*bank
, int first
, int last
)
211 retval
= dsp5680xx_f_erase(bank
->target
, (uint32_t) first
, (uint32_t) last
);
212 if ((!(first
| last
)) || ((first
== 0) && (last
== (HFM_SECTOR_COUNT
- 1))))
213 last
= HFM_SECTOR_COUNT
- 1;
214 if (retval
== ERROR_OK
)
215 for (int i
= first
; i
<= last
; i
++)
216 bank
->sectors
[i
].is_erased
= 1;
219 * If an error occurred unknown status
220 *is set even though some sector could have been correctly erased.
222 for (int i
= first
; i
<= last
; i
++)
223 bank
->sectors
[i
].is_erased
= -1;
228 * The flash module (FM) on the dsp5680xx support a blank check function.
229 * This function executes the FM's blank check functionality on each and every sector.
235 static int dsp5680xx_flash_erase_check(struct flash_bank
*bank
)
237 int retval
= ERROR_OK
;
243 for (i
= 0; i
< HFM_SECTOR_COUNT
; i
++) {
244 if (bank
->sectors
[i
].is_erased
== -1) {
245 retval
= dsp5680xx_f_erase_check(bank
->target
, &erased
, i
);
246 if (retval
!= ERROR_OK
) {
247 bank
->sectors
[i
].is_erased
= -1;
250 bank
->sectors
[i
].is_erased
= 1;
252 bank
->sectors
[i
].is_erased
= 0;
259 struct flash_driver dsp5680xx_flash
= {
260 .name
= "dsp5680xx_flash",
261 .flash_bank_command
= dsp5680xx_flash_bank_command
,
262 .erase
= dsp5680xx_flash_erase
,
263 .protect
= dsp5680xx_flash_protect
,
264 .write
= dsp5680xx_flash_write
,
265 /* .read = default_flash_read, */
266 .probe
= dsp5680xx_probe
,
267 .auto_probe
= dsp5680xx_probe
,
268 .erase_check
= dsp5680xx_flash_erase_check
,
269 .protect_check
= dsp5680xx_flash_protect_check
,
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