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flash.c
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flash.c
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/* Simple wrapper around the stlink_flash_write function */
// TODO - this should be done as just a simple flag to the st-util command line...
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <stlink.h>
#include "flash.h"
static stlink_t *connected_stlink = NULL;
static void cleanup(int signum) {
(void)signum;
if (connected_stlink) { // switch back to mass storage mode before closing
stlink_run(connected_stlink, RUN_NORMAL);
stlink_exit_debug_mode(connected_stlink);
stlink_close(connected_stlink);
}
exit(1);
}
static void usage(void) {
puts("command line: ./st-flash [--debug] [--reset] [--connect-under-reset] [--hot-plug] [--opt] [--serial <serial>] [--format <format>] [--flash=<fsize>] [--freq=<kHz>] [--area=<area>] {read|write} [path] [addr] [size]");
puts("command line: ./st-flash [--debug] [--connect-under-reset] [--hot-plug] [--freq=<kHz>] [--serial <serial>] erase");
puts("command line: ./st-flash [--debug] [--freq=<kHz>] [--serial <serial>] reset");
puts(" <addr>, <serial> and <size>: Use hex format.");
puts(" <fsize>: Use decimal, octal or hex (prefix 0xXXX) format, optionally followed by k=KB, or m=MB (eg. --flash=128k)");
puts(" <format>: Can be 'binary' (default) or 'ihex', although <addr> must be specified for binary format only.");
puts(" <area>: Can be 'main' (default), 'system', 'otp', 'optcr', 'optcr1', 'option' or 'option_boot_add'");
puts("print tool version info: ./st-flash [--version]");
puts("example read option byte: ./st-flash --area=option read [path] [size]");
puts("example write option byte: ./st-flash --area=option write 0xXXXXXXXX");
puts("On selected targets:");
puts("example read boot_add option byte: ./st-flash --area=option_boot_add read");
puts("example write boot_add option byte: ./st-flash --area=option_boot_add write 0xXXXXXXXX");
puts("example read option control register byte: ./st-flash --area=optcr read");
puts("example write option control register1 byte: ./st-flash --area=optcr write 0xXXXXXXXX");
puts("example read option control register1 byte: ./st-flash --area=optcr1 read");
puts("example write option control register1 byte: ./st-flash --area=optcr1 write 0xXXXXXXXX");
}
int main(int ac, char** av) {
stlink_t* sl = NULL;
struct flash_opts o;
int err = -1;
uint8_t * mem = NULL;
o.size = 0;
o.connect = CONNECT_NORMAL;
if (flash_get_opts(&o, ac - 1, av + 1) == -1) {
printf("invalid command line\n");
usage();
return(-1);
}
printf("st-flash %s\n", STLINK_VERSION);
init_chipids (ETC_STLINK_DIR);
sl = stlink_open_usb(o.log_level, o.connect, (char *)o.serial, o.freq);
if (sl == NULL) { return(-1); }
if (sl->flash_type == STLINK_FLASH_TYPE_UNKNOWN) {
printf("Failed to connect to target\n");
goto on_error;
}
if ( o.flash_size != 0u && o.flash_size != sl->flash_size ) {
sl->flash_size = o.flash_size;
printf("Forcing flash size: --flash=0x%08X\n", (unsigned int)sl->flash_size);
}
sl->verbose = o.log_level;
sl->opt = o.opt;
connected_stlink = sl;
signal(SIGINT, &cleanup);
signal(SIGTERM, &cleanup);
signal(SIGSEGV, &cleanup);
// core must be halted to use RAM based flashloaders
if (stlink_force_debug(sl)) {
printf("Failed to halt the core\n");
goto on_error;
}
if (stlink_status(sl)) {
printf("Failed to get Core's status\n");
goto on_error;
}
if (o.cmd == FLASH_CMD_WRITE) { // write
size_t size = 0;
if (o.format == FLASH_FORMAT_IHEX) {
err = stlink_parse_ihex(o.filename, stlink_get_erased_pattern(sl), &mem, &size, &o.addr);
if (err == -1) {
printf("Cannot parse %s as Intel-HEX file\n", o.filename);
goto on_error;
}
}
if ((o.addr >= sl->flash_base) &&
(o.addr < sl->flash_base + sl->flash_size)) {
if (o.format == FLASH_FORMAT_IHEX) {
err = stlink_mwrite_flash(sl, mem, (uint32_t)size, o.addr);
} else {
err = stlink_fwrite_flash(sl, o.filename, o.addr);
}
if (err == -1) {
printf("stlink_fwrite_flash() == -1\n");
goto on_error;
}
} else if ((o.addr >= sl->sram_base) &&
(o.addr < sl->sram_base + sl->sram_size)) {
if (o.format == FLASH_FORMAT_IHEX) {
err = stlink_mwrite_sram(sl, mem, (uint32_t)size, o.addr);
} else {
err = stlink_fwrite_sram(sl, o.filename, o.addr);
}
if (err == -1) {
printf("stlink_fwrite_sram() == -1\n");
goto on_error;
}
} else if ((o.addr >= sl->option_base) &&
(o.addr < sl->option_base + sl->option_size)) {
err = stlink_fwrite_option_bytes(sl, o.filename, o.addr);
if (err == -1) {
printf("stlink_fwrite_option_bytes() == -1\n");
goto on_error;
}
} else if (o.area == FLASH_OPTION_BYTES) {
if (o.val == 0) {
printf("attempting to set option byte to 0, abort.\n");
goto on_error;
}
err = stlink_write_option_bytes32(sl, o.val);
if (err == -1) {
printf("stlink_write_option_bytes32() == -1\n");
goto on_error;
}
} else if (o.area == FLASH_OPTCR) {
DLOG("@@@@ Write %d (%0#10x) to option control register\n", o.val, o.val);
err = stlink_write_option_control_register32(sl, o.val);
} else if (o.area == FLASH_OPTCR1) {
DLOG("@@@@ Write %d (%0#10x) to option control register 1\n", o.val, o.val);
err = stlink_write_option_control_register1_32(sl, o.val);
} else if (o.area == FLASH_OPTION_BYTES_BOOT_ADD) {
DLOG("@@@@ Write %d (%0#10x) to option bytes boot address\n", o.val, o.val);
err = stlink_write_option_bytes_boot_add32(sl, o.val);
} else {
err = -1;
printf("Unknown memory region\n");
goto on_error;
}
} else if (o.cmd == FLASH_CMD_ERASE) {
err = stlink_erase_flash_mass(sl);
if (err == -1) {
printf("stlink_erase_flash_mass() == -1\n");
goto on_error;
}
} else if (o.cmd == CMD_RESET) {
if (stlink_reset(sl, RESET_AUTO)) {
printf("Failed to reset device\n");
goto on_error;
}
} else { // read
if ((o.area == FLASH_MAIN_MEMORY) || (o.area == FLASH_SYSTEM_MEMORY)) {
if ((o.size == 0) && (o.addr >= sl->flash_base) && (o.addr < sl->flash_base + sl->flash_size)) {
o.size = sl->flash_size;
}
else if ((o.size == 0) && (o.addr >= sl->sram_base) && (o.addr < sl->sram_base + sl->sram_size)) {
o.size = sl->sram_size;
}
err = stlink_fread(sl, o.filename, o.format == FLASH_FORMAT_IHEX, o.addr, o.size);
if (err == -1) {
printf("could not read main memory (%d)\n", err);
goto on_error;
}
} else if (o.area == FLASH_OPTION_BYTES) {
size_t remaining_option_length = sl->option_size / 4;
DLOG("@@@@ Read %u (%#x) option bytes from %#10x\n",
(unsigned)remaining_option_length,
(unsigned)remaining_option_length,
sl->option_base);
if (NULL != o.filename) {
if (0 == o.size) {
o.size = sl->option_size;
}
err = stlink_fread(sl, o.filename, o.format == FLASH_FORMAT_IHEX, sl->option_base, o.size);
} else {
uint32_t option_byte = 0;
err = stlink_read_option_bytes32(sl, &option_byte);
if (err == -1) {
printf("could not read option bytes (%d)\n", err);
goto on_error;
} else {
printf("%08x\n", option_byte);
}
}
} else if (o.area == FLASH_OPTION_BYTES_BOOT_ADD) {
uint32_t option_byte = 0;
err = stlink_read_option_bytes_boot_add32(sl, &option_byte);
if (err == -1) {
printf("could not read option bytes boot address (%d)\n", err);
goto on_error;
} else {
printf("%08x\n",option_byte);
}
} else if (o.area == FLASH_OPTCR) {
uint32_t option_byte = 0;
err = stlink_read_option_control_register32(sl, &option_byte);
if (err == -1) {
printf("could not read option control register (%d)\n", err);
goto on_error;
} else {
printf("%08x\n",option_byte);
}
} else if (o.area == FLASH_OPTCR1) {
uint32_t option_byte = 0;
err = stlink_read_option_control_register1_32(sl, &option_byte);
if (err == -1) {
printf("could not read option control register (%d)\n", err);
goto on_error;
} else {
printf("%08x\n",option_byte);
}
}
}
if (o.reset) {
stlink_reset(sl, RESET_AUTO);
}
err = 0; // success
on_error:
stlink_exit_debug_mode(sl);
stlink_close(sl);
free(mem);
return(err);
}