flash: Constify write buffer

[openocd] / src / flash / nor / pic32mx.c

diff --git a/src/flash/nor/pic32mx.c b/src/flash/nor/pic32mx.c
index 0b43c1b5595cd5b7ef426b5bc8358046dd09fab8..5e82ba63d58b08c72255e1f0b06bee72f548ec73 100644 (file)
--- a/src/flash/nor/pic32mx.c
+++ b/src/flash/nor/pic32mx.c
@@ -21,7 +21,7 @@
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program; if not, write to the                         *
  *   Free Software Foundation, Inc.,                                       *
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
@@ -96,7 +96,6 @@
 #define MX_1_2                 1       /* PIC32mx1xx/2xx */
 
 struct pic32mx_flash_bank {
-       struct working_area *write_algorithm;
        int probed;
        int dev_type;           /* Default 0. 1 for Pic32MX1XX/2XX variant */
 };
@@ -193,7 +192,6 @@ FLASH_BANK_COMMAND_HANDLER(pic32mx_flash_bank_command)
        pic32mx_info = malloc(sizeof(struct pic32mx_flash_bank));
        bank->driver_priv = pic32mx_info;
 
-       pic32mx_info->write_algorithm = NULL;
        pic32mx_info->probed = 0;
        pic32mx_info->dev_type = 0;
 
@@ -412,11 +410,12 @@ static uint32_t pic32mx_flash_write_code[] = {
        0x00000000              /* nop */
 };
 
-static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
+static int pic32mx_write_block(struct flash_bank *bank, const uint8_t *buffer,
                uint32_t offset, uint32_t count)
 {
        struct target *target = bank->target;
        uint32_t buffer_size = 16384;
+       struct working_area *write_algorithm;
        struct working_area *source;
        uint32_t address = bank->base + offset;
        struct reg_param reg_params[3];
@@ -428,7 +427,7 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
 
        /* flash write code */
        if (target_alloc_working_area(target, sizeof(pic32mx_flash_write_code),
-                       &pic32mx_info->write_algorithm) != ERROR_OK) {
+                       &write_algorithm) != ERROR_OK) {
                LOG_WARNING("no working area available, can't do block memory writes");
                return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        };
@@ -450,8 +449,10 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
                row_size = 512;
        }
 
-       retval = target_write_buffer(target, pic32mx_info->write_algorithm->address,
-                       sizeof(pic32mx_flash_write_code), (uint8_t *)pic32mx_flash_write_code);
+       uint8_t code[sizeof(pic32mx_flash_write_code)];
+       target_buffer_set_u32_array(target, code, ARRAY_SIZE(pic32mx_flash_write_code),
+                       pic32mx_flash_write_code);
+       retval = target_write_buffer(target, write_algorithm->address, sizeof(code), code);
        if (retval != ERROR_OK)
                return retval;
 
@@ -459,10 +460,9 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
        while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) {
                buffer_size /= 2;
                if (buffer_size <= 256) {
-                       /* if we already allocated the writing code, but failed to get a
+                       /* we already allocated the writing code, but failed to get a
                         * buffer, free the algorithm */
-                       if (pic32mx_info->write_algorithm)
-                               target_free_working_area(target, pic32mx_info->write_algorithm);
+                       target_free_working_area(target, write_algorithm);
 
                        LOG_WARNING("no large enough working area available, can't do block memory writes");
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
@@ -518,7 +518,7 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
                buf_set_u32(reg_params[2].value, 0, 32, thisrun_count + row_offset / 4);
 
                retval = target_run_algorithm(target, 0, NULL, 3, reg_params,
-                               pic32mx_info->write_algorithm->address,
+                               write_algorithm->address,
                                0, 10000, &mips32_info);
                if (retval != ERROR_OK) {
                        LOG_ERROR("error executing pic32mx flash write algorithm");
@@ -550,7 +550,7 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
        }
 
        target_free_working_area(target, source);
-       target_free_working_area(target, pic32mx_info->write_algorithm);
+       target_free_working_area(target, write_algorithm);
 
        destroy_reg_param(&reg_params[0]);
        destroy_reg_param(&reg_params[1]);
@@ -571,7 +571,7 @@ static int pic32mx_write_word(struct flash_bank *bank, uint32_t address, uint32_
        return pic32mx_nvm_exec(bank, NVMCON_OP_WORD_PROG, 5);
 }
 
-static int pic32mx_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
+static int pic32mx_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
 {
        uint32_t words_remaining = (count / 4);
        uint32_t bytes_remaining = (count & 0x00000003);