int run_flash_loader(stlink_t *sl, flash_loader_t* fl, stm32_addr_t target, const uint8_t* buf, size_t size) {
reg rr;
- int i = 0;
+ int target_reg, source_reg, i = 0;
+ size_t count;
+
DLOG("Running flash loader, write address:%#x, size: %zd\n", target, size);
// FIXME This can never return -1
if (write_buffer_to_sram(sl, fl, buf, size) == -1) {
}
if (sl->flash_type == FLASH_TYPE_L0) {
-
- size_t count = size / sizeof(uint32_t);
- if (size % sizeof(uint32_t)) ++count;
-
- /* setup core */
- stlink_write_reg(sl, target, 0); /* target */
- stlink_write_reg(sl, fl->buf_addr, 1); /* source */
- stlink_write_reg(sl, count, 2); /* count (32 bits words) */
- stlink_write_reg(sl, fl->loader_addr, 15); /* pc register */
-
+ count = size / sizeof(uint32_t);
+ if (size % sizeof(uint32_t))
+ ++count;
+ target_reg = 0;
+ source_reg = 1;
} else if (sl->flash_type == FLASH_TYPE_F0) {
-
- size_t count = size / sizeof(uint16_t);
- if (size % sizeof(uint16_t)) ++count;
-
- /* setup core */
- stlink_write_reg(sl, fl->buf_addr, 0); /* source */
- stlink_write_reg(sl, target, 1); /* target */
- stlink_write_reg(sl, count, 2); /* count (16 bits half words) */
- stlink_write_reg(sl, 0, 3); /* flash bank 0 (input) */
- stlink_write_reg(sl, fl->loader_addr, 15); /* pc register */
-
+ count = size / sizeof(uint16_t);
+ if (size % sizeof(uint16_t))
+ ++count;
+ target_reg = 1;
+ source_reg = 0;
} else if (sl->flash_type == FLASH_TYPE_F4 || sl->flash_type == FLASH_TYPE_L4) {
- size_t count = size / sizeof(uint32_t);
- if (size % sizeof(uint32_t)) ++count;
+ count = size / sizeof(uint32_t);
+ if (size % sizeof(uint32_t))
+ ++count;
if (sl->chip_id == STM32_CHIPID_L4) {
- if (count % 2) ++count;
+ if (count % 2)
+ ++count;
}
-
- /* setup core */
- stlink_write_reg(sl, fl->buf_addr, 0); /* source */
- stlink_write_reg(sl, target, 1); /* target */
- stlink_write_reg(sl, count, 2); /* count (32 bits words) */
- stlink_write_reg(sl, fl->loader_addr, 15); /* pc register */
-
+ target_reg = 1;
+ source_reg = 0;
} else {
fprintf(stderr, "unknown coreid 0x%x, don't know what flash loader to use\n", sl->core_id);
return -1;
}
+ /* setup core */
+ stlink_write_reg(sl, fl->buf_addr, source_reg); /* source */
+ stlink_write_reg(sl, target, target_reg); /* target */
+ stlink_write_reg(sl, count, 2); /* count */
+ stlink_write_reg(sl, 0, 3); /* flash bank 0 (input), only used on F0, but armless fopr others */
+ stlink_write_reg(sl, fl->loader_addr, 15); /* pc register */
+
/* run loader */
stlink_run(sl);
return -1;
}
+ stlink_read_all_regs(sl, &rr);
+
/* check written byte count */
if (sl->flash_type == FLASH_TYPE_L0) {
- size_t count = size / sizeof(uint32_t);
- if (size % sizeof(uint32_t)) ++count;
-
- stlink_read_reg(sl, 3, &rr);
if (rr.r[3] != count) {
fprintf(stderr, "write error, count == %u\n", rr.r[3]);
return -1;
}
-
- } else if (sl->flash_type == FLASH_TYPE_F0) {
- stlink_read_reg(sl, 2, &rr);
- if (rr.r[2] != 0) {
- fprintf(stderr, "write error, count == %u\n", rr.r[2]);
- return -1;
- }
-
- } else if (sl->flash_type == FLASH_TYPE_F4 || sl->flash_type == FLASH_TYPE_L4) {
- stlink_read_reg(sl, 2, &rr);
+ } else {
if (rr.r[2] != 0) {
fprintf(stderr, "write error, count == %u\n", rr.r[2]);
return -1;
}
-
- } else {
-
- fprintf(stderr, "unknown coreid 0x%x, can't check written byte count\n", sl->core_id);
- return -1;
-
}
return 0;