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, write to the *
22 * Free Software Foundation, Inc., *
23 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
24 ***************************************************************************/
27 * @file dsp5680xx_flash.c
28 * @author Rodrigo L. Rosa <rodrigorosa.LG@gmail.com>
29 * @date Thu Jun 9 18:21:58 2011
31 * @brief This file implements the basic functions to run flashing commands
32 * from the TCL interface.
33 * It allows the user to flash the Freescale 5680xx DSP.
43 #include <helper/binarybuffer.h>
44 #include <helper/time_support.h>
45 #include <target/algorithm.h>
46 #include <target/dsp5680xx.h>
48 static int dsp5680xx_build_sector_list(struct flash_bank
*bank
)
50 uint32_t offset
= HFM_FLASH_BASE_ADDR
;
52 bank
->sectors
= malloc(sizeof(struct flash_sector
) * bank
->num_sectors
);
55 for (i
= 0; i
< bank
->num_sectors
; ++i
) {
56 bank
->sectors
[i
].offset
= i
* HFM_SECTOR_SIZE
;
57 bank
->sectors
[i
].size
= HFM_SECTOR_SIZE
;
58 offset
+= bank
->sectors
[i
].size
;
59 bank
->sectors
[i
].is_erased
= -1;
60 bank
->sectors
[i
].is_protected
= -1;
62 LOG_USER("%s not tested yet.", __func__
);
67 /* flash bank dsp5680xx 0 0 0 0 <target#> */
68 FLASH_BANK_COMMAND_HANDLER(dsp5680xx_flash_bank_command
)
70 bank
->base
= HFM_FLASH_BASE_ADDR
;
71 bank
->size
= HFM_SIZE_BYTES
; /* top 4k not accessible */
72 bank
->num_sectors
= HFM_SECTOR_COUNT
;
73 dsp5680xx_build_sector_list(bank
);
79 * A memory mapped register (PROT) holds information regarding sector protection.
80 * Protection refers to undesired core access.
81 * The value in this register is loaded from flash upon reset.
87 static int dsp5680xx_flash_protect_check(struct flash_bank
*bank
)
89 int retval
= ERROR_OK
;
91 uint16_t protected = 0;
93 retval
= dsp5680xx_f_protect_check(bank
->target
, &protected);
94 if (retval
!= ERROR_OK
) {
95 for (int i
= 0; i
< HFM_SECTOR_COUNT
; i
++)
96 bank
->sectors
[i
].is_protected
= -1;
99 for (int i
= 0; i
< HFM_SECTOR_COUNT
/ 2; i
++) {
101 bank
->sectors
[2 * i
].is_protected
= 1;
102 bank
->sectors
[2 * i
+ 1].is_protected
= 1;
104 bank
->sectors
[2 * i
].is_protected
= 0;
105 bank
->sectors
[2 * i
+ 1].is_protected
= 0;
107 protected = (protected >> 1);
113 * Protection funcionality is not implemented.
114 * The current implementation applies/removes security on the chip.
115 * The chip is effectively secured/unsecured after the first reset
116 * following the execution of this function.
119 * @param set Apply or remove security on the chip.
120 * @param first This parameter is ignored.
121 * @param last This parameter is ignored.
125 static int dsp5680xx_flash_protect(struct flash_bank
*bank
, int set
, int first
,
129 * This applies security to flash module after next reset, it does
130 * not actually apply protection (protection refers to undesired access from the core)
135 retval
= dsp5680xx_f_lock(bank
->target
);
137 retval
= dsp5680xx_f_unlock(bank
->target
);
138 if (retval
== ERROR_OK
) {
139 /* mark all as erased */
140 for (int i
= 0; i
<= (HFM_SECTOR_COUNT
- 1); i
++)
141 /* FM does not recognize it as erased if erased via JTAG. */
142 bank
->sectors
[i
].is_erased
= 1;
149 * The dsp5680xx use word addressing. The "/2" that appear in the following code
150 * are a workaround for the fact that OpenOCD uses byte addressing.
153 * @param buffer Data to write to flash.
155 * @param count In bytes (2 bytes per address).
159 static int dsp5680xx_flash_write(struct flash_bank
*bank
, uint8_t * buffer
,
160 uint32_t offset
, uint32_t count
)
164 if ((offset
+ count
/ 2) > bank
->size
) {
165 LOG_ERROR("%s: Flash bank cannot fit data.", __func__
);
170 * Writing to odd addresses not supported.
171 * This chip uses word addressing, Openocd only supports byte addressing.
172 * The workaround results in disabling writing to odd byte addresses
174 LOG_ERROR("%s: Writing to odd addresses not supported for this target", __func__
);
177 retval
= dsp5680xx_f_wr(bank
->target
, buffer
, bank
->base
+ offset
/ 2, count
, 0);
180 for (addr_word
= bank
->base
+ offset
/ 2; addr_word
< count
/ 2;
181 addr_word
+= (HFM_SECTOR_SIZE
/ 2)) {
182 if (retval
== ERROR_OK
)
183 bank
->sectors
[addr_word
/ (HFM_SECTOR_SIZE
/ 2)].is_erased
= 0;
185 bank
->sectors
[addr_word
/ (HFM_SECTOR_SIZE
/ 2)].is_erased
= -1;
190 static int dsp5680xx_probe(struct flash_bank
*bank
)
192 LOG_DEBUG("%s not implemented", __func__
);
196 static int dsp5680xx_flash_info(struct flash_bank
*bank
, char *buf
,
199 snprintf(buf
, buf_size
,
200 "\ndsp5680xx flash driver info:\n - See comments in code.");
205 * The flash module (FM) on the dsp5680xx supports both individual sector
206 * and mass erase of the flash memory.
207 * If this function is called with @first == @last == 0 or if @first is the
208 * first sector (#0) and @last is the last sector then the mass erase command
209 * is executed (much faster than erasing each sector individually).
217 static int dsp5680xx_flash_erase(struct flash_bank
*bank
, int first
, int last
)
221 retval
= dsp5680xx_f_erase(bank
->target
, (uint32_t) first
, (uint32_t) last
);
222 if ((!(first
| last
)) || ((first
== 0) && (last
== (HFM_SECTOR_COUNT
- 1))))
223 last
= HFM_SECTOR_COUNT
- 1;
224 if (retval
== ERROR_OK
)
225 for (int i
= first
; i
<= last
; i
++)
226 bank
->sectors
[i
].is_erased
= 1;
229 * If an error occurred unknown status
230 *is set even though some sector could have been correctly erased.
232 for (int i
= first
; i
<= last
; i
++)
233 bank
->sectors
[i
].is_erased
= -1;
238 * The flash module (FM) on the dsp5680xx support a blank check function.
239 * This function executes the FM's blank check functionality on each and every sector.
245 static int dsp5680xx_flash_erase_check(struct flash_bank
*bank
)
247 int retval
= ERROR_OK
;
253 for (i
= 0; i
< HFM_SECTOR_COUNT
; i
++) {
254 if (bank
->sectors
[i
].is_erased
== -1) {
255 retval
= dsp5680xx_f_erase_check(bank
->target
, &erased
, i
);
256 if (retval
!= ERROR_OK
) {
257 bank
->sectors
[i
].is_erased
= -1;
260 bank
->sectors
[i
].is_erased
= 1;
262 bank
->sectors
[i
].is_erased
= 0;
269 struct flash_driver dsp5680xx_flash
= {
270 .name
= "dsp5680xx_flash",
271 .flash_bank_command
= dsp5680xx_flash_bank_command
,
272 .erase
= dsp5680xx_flash_erase
,
273 .protect
= dsp5680xx_flash_protect
,
274 .write
= dsp5680xx_flash_write
,
275 /* .read = default_flash_read, */
276 .probe
= dsp5680xx_probe
,
277 .auto_probe
= dsp5680xx_probe
,
278 .erase_check
= dsp5680xx_flash_erase_check
,
279 .protect_check
= dsp5680xx_flash_protect_check
,
280 .info
= dsp5680xx_flash_info