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Pic32mx: make row programming work with any offset 

In function pic32mx_write_block() if the parameter
offset is not a multiple of row size the row offset
(offset % row_size) will be ignored by the flash
controller, shifting the code to the beginning of
the row.
Word programming gets it right.

Change-Id: I134913e3d533688f791bbcb0c6e8983524197f3c
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/796
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
This commit is contained in:
Salvador Arroyo 2012-08-25 16:22:58 +02:00 committed by Freddie Chopin
parent 210ff60284
commit 4288886c83
1 changed files with 44 additions and 8 deletions
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42
src/flash/nor/pic32mx.c
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@ -420,6 +420,7 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
struct working_area *source;
uint32_t address = bank->base + offset;
struct reg_param reg_params[3];
uint32_t row_size;
int retval = ERROR_OK;
struct pic32mx_flash_bank *pic32mx_info = bank->driver_priv;
@ -439,12 +440,14 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
pic32mx_flash_write_code[14] = 0x24840080;
pic32mx_flash_write_code[15] = 0x24A50080;
pic32mx_flash_write_code[17] = 0x24C6FFE0;
row_size = 128;
} else {
/* 512 byte row */
pic32mx_flash_write_code[8] = 0x2CD30080;
pic32mx_flash_write_code[14] = 0x24840200;
pic32mx_flash_write_code[15] = 0x24A50200;
pic32mx_flash_write_code[17] = 0x24C6FF80;
row_size = 512;
}
retval = target_write_buffer(target, pic32mx_info->write_algorithm->address,
@ -464,7 +467,7 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
LOG_WARNING("no large enough working area available, can't do block memory writes");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
};
}
mips32_info.common_magic = MIPS32_COMMON_MAGIC;
mips32_info.isa_mode = MIPS32_ISA_MIPS32;
@ -473,19 +476,46 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
init_reg_param(&reg_params[1], "a1", 32, PARAM_OUT);
init_reg_param(&reg_params[2], "a2", 32, PARAM_OUT);
int row_offset = offset % row_size;
uint8_t *new_buffer = NULL;
if (row_offset && (count >= (row_size / 4))) {
new_buffer = malloc(buffer_size);
if (new_buffer == NULL) {
LOG_ERROR("Out of memory");
return ERROR_FAIL;
}
memset(new_buffer, 0xff, row_offset);
address -= row_offset;
} else
row_offset = 0;
while (count > 0) {
uint32_t status;
uint32_t thisrun_count = (count > (buffer_size / 4)) ?
uint32_t thisrun_count;
if (row_offset) {
thisrun_count = (count > ((buffer_size - row_offset) / 4)) ?
((buffer_size - row_offset) / 4) : count;
memcpy(new_buffer + row_offset, buffer, thisrun_count * 4);
retval = target_write_buffer(target, source->address,
row_offset + thisrun_count * 4, new_buffer);
if (retval != ERROR_OK)
break;
} else {
thisrun_count = (count > (buffer_size / 4)) ?
(buffer_size / 4) : count;
retval = target_write_buffer(target, source->address,
thisrun_count * 4, buffer);
if (retval != ERROR_OK)
break;
}
buf_set_u32(reg_params[0].value, 0, 32, Virt2Phys(source->address));
buf_set_u32(reg_params[1].value, 0, 32, Virt2Phys(address));
buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
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,
@ -513,6 +543,10 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
buffer += thisrun_count * 4;
address += thisrun_count * 4;
count -= thisrun_count;
if (row_offset) {
address += row_offset;
row_offset = 0;
}
}
target_free_working_area(target, source);
@ -522,6 +556,8 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer,
destroy_reg_param(&reg_params[1]);
destroy_reg_param(&reg_params[2]);
if (new_buffer != NULL)
free(new_buffer);
return retval;
}