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
);
52 for (unsigned int i
= 0; i
< bank
->num_sectors
; ++i
) {
53 bank
->sectors
[i
].offset
= i
* HFM_SECTOR_SIZE
;
54 bank
->sectors
[i
].size
= HFM_SECTOR_SIZE
;
55 offset
+= bank
->sectors
[i
].size
;
56 bank
->sectors
[i
].is_erased
= -1;
57 bank
->sectors
[i
].is_protected
= -1;
59 LOG_USER("%s not tested yet.", __func__
);
64 /* flash bank dsp5680xx 0 0 0 0 <target#> */
65 FLASH_BANK_COMMAND_HANDLER(dsp5680xx_flash_bank_command
)
67 bank
->base
= HFM_FLASH_BASE_ADDR
;
68 bank
->size
= HFM_SIZE_BYTES
; /* top 4k not accessible */
69 bank
->num_sectors
= HFM_SECTOR_COUNT
;
70 dsp5680xx_build_sector_list(bank
);
76 * A memory mapped register (PROT) holds information regarding sector protection.
77 * Protection refers to undesired core access.
78 * The value in this register is loaded from flash upon reset.
84 static int dsp5680xx_flash_protect_check(struct flash_bank
*bank
)
86 int retval
= ERROR_OK
;
88 uint16_t protected = 0;
90 retval
= dsp5680xx_f_protect_check(bank
->target
, &protected);
91 if (retval
!= ERROR_OK
) {
92 for (int i
= 0; i
< HFM_SECTOR_COUNT
; i
++)
93 bank
->sectors
[i
].is_protected
= -1;
96 for (int i
= 0; i
< HFM_SECTOR_COUNT
/ 2; i
++) {
98 bank
->sectors
[2 * i
].is_protected
= 1;
99 bank
->sectors
[2 * i
+ 1].is_protected
= 1;
101 bank
->sectors
[2 * i
].is_protected
= 0;
102 bank
->sectors
[2 * i
+ 1].is_protected
= 0;
104 protected = (protected >> 1);
110 * Protection functionality is not implemented.
111 * The current implementation applies/removes security on the chip.
112 * The chip is effectively secured/unsecured after the first reset
113 * following the execution of this function.
116 * @param set Apply or remove security on the chip.
117 * @param first This parameter is ignored.
118 * @param last This parameter is ignored.
122 static int dsp5680xx_flash_protect(struct flash_bank
*bank
, int set
,
123 unsigned int first
, unsigned int last
)
126 * This applies security to flash module after next reset, it does
127 * not actually apply protection (protection refers to undesired access from the core)
132 retval
= dsp5680xx_f_lock(bank
->target
);
134 retval
= dsp5680xx_f_unlock(bank
->target
);
140 * The dsp5680xx use word addressing. The "/2" that appear in the following code
141 * are a workaround for the fact that OpenOCD uses byte addressing.
144 * @param buffer Data to write to flash.
146 * @param count In bytes (2 bytes per address).
150 static int dsp5680xx_flash_write(struct flash_bank
*bank
, const uint8_t *buffer
,
151 uint32_t offset
, uint32_t count
)
153 if ((offset
+ count
/ 2) > bank
->size
) {
154 LOG_ERROR("%s: Flash bank cannot fit data.", __func__
);
159 * Writing to odd addresses not supported.
160 * This chip uses word addressing, Openocd only supports byte addressing.
161 * The workaround results in disabling writing to odd byte addresses
163 LOG_ERROR("%s: Writing to odd addresses not supported for this target", __func__
);
166 return dsp5680xx_f_wr(bank
->target
, buffer
, bank
->base
+ offset
/ 2, count
, 0);
169 static int dsp5680xx_probe(struct flash_bank
*bank
)
171 LOG_DEBUG("%s not implemented", __func__
);
176 * The flash module (FM) on the dsp5680xx supports both individual sector
177 * and mass erase of the flash memory.
178 * If this function is called with @a first == @a last == 0 or if @a first is the
179 * first sector (#0) and @a last is the last sector then the mass erase command
180 * is executed (much faster than erasing each sector individually).
188 static int dsp5680xx_flash_erase(struct flash_bank
*bank
, unsigned int first
,
191 return dsp5680xx_f_erase(bank
->target
, (uint32_t) first
, (uint32_t) last
);
195 * The flash module (FM) on the dsp5680xx support a blank check function.
196 * This function executes the FM's blank check functionality on each and every sector.
202 static int dsp5680xx_flash_erase_check(struct flash_bank
*bank
)
204 int retval
= ERROR_OK
;
210 for (i
= 0; i
< HFM_SECTOR_COUNT
; i
++) {
211 retval
= dsp5680xx_f_erase_check(bank
->target
, &erased
, i
);
212 if (retval
!= ERROR_OK
) {
213 bank
->sectors
[i
].is_erased
= -1;
216 bank
->sectors
[i
].is_erased
= 1;
218 bank
->sectors
[i
].is_erased
= 0;
224 const struct flash_driver dsp5680xx_flash
= {
225 .name
= "dsp5680xx_flash",
226 .flash_bank_command
= dsp5680xx_flash_bank_command
,
227 .erase
= dsp5680xx_flash_erase
,
228 .protect
= dsp5680xx_flash_protect
,
229 .write
= dsp5680xx_flash_write
,
230 /* .read = default_flash_read, */
231 .probe
= dsp5680xx_probe
,
232 .auto_probe
= dsp5680xx_probe
,
233 .erase_check
= dsp5680xx_flash_erase_check
,
234 .protect_check
= dsp5680xx_flash_protect_check
,
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