static const char hex[] = "0123456789abcdef";
-// configured for STM32F100RB
-static const char* const c_memory_map =
- "<?xml version=\"1.0\"?>"
- "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
- " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
- "<memory-map>"
- " <memory type=\"rom\" start=\"0x00000000\" length=\"0x20000\"/>" // code = sram or flash
- " <memory type=\"ram\" start=\"0x20000000\" length=\"0x2000\"/>" // sram 8k
- " <memory type=\"flash\" start=\"0x08000000\" length=\"0x20000\">" // flash 128k
- " <property name=\"blocksize\">0x400</property>" // 1k pages
- " </memory>"
- " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
- " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
- "</memory-map>";
+static const char* current_memory_map = NULL;
+
+struct chip_params {
+ uint32_t chip_id;
+ char* description;
+ uint32_t max_flash_size, flash_pagesize;
+ uint32_t sram_size;
+ uint32_t bootrom_base, bootrom_size;
+} const devices[] = {
+ { 0x412, "Low-density device",
+ 0x8000, 0x400, 0x2800, 0x1ffff000, 0x800 },
+ { 0x410, "Medium-density device",
+ 0x20000, 0x400, 0x5000, 0x1ffff000, 0x800 },
+ { 0x414, "High-density device",
+ 0x80000, 0x800, 0x10000, 0x1ffff000, 0x800 },
+ { 0x418, "Connectivity line device",
+ 0x40000, 0x800, 0x10000, 0x1fffb000, 0x4800 },
+ { 0x420, "Medium-density value line device",
+ 0x20000, 0x400, 0x2000, 0x1ffff000, 0x800 },
+ { 0x428, "High-density value line device",
+ 0x80000, 0x800, 0x8000, 0x1ffff000, 0x800 },
+ { 0x430, "XL-density device",
+ 0x100000, 0x800, 0x18000, 0x1fffe000, 0x1800 },
+ { 0 }
+};
int serve(struct stlink* sl, int port);
+char* make_memory_map(const struct chip_params *params, uint32_t flash_size);
int main(int argc, char** argv) {
if(argc != 3) {
if(stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE)
stlink_enter_swd_mode(sl);
- stlink_core_id(sl);
- printf("Debugging ARM core %08x.\n", sl->core_id);
+ uint32_t chip_id;
+
+ stlink_read_mem32(sl, 0xE0042000, 4);
+ chip_id = sl->q_buf[0] | (sl->q_buf[1] << 8) | (sl->q_buf[2] << 16) |
+ (sl->q_buf[3] << 24);
+
+ printf("Chip ID is %08x.\n", chip_id);
+
+ const struct chip_params* params = NULL;
+
+ for(int i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
+ if(devices[i].chip_id == (chip_id & 0xFFF)) {
+ params = &devices[i];
+ break;
+ }
+ }
+
+ if(params == NULL) {
+ fprintf(stderr, "Cannot recognize the connected device!\n");
+ return 0;
+ }
+
+ printf("Device connected: %s\n", params->description);
+ printf("Device parameters: SRAM: 0x%x bytes, Flash: up to 0x%x bytes in pages of 0x%x bytes\n",
+ params->sram_size, params->max_flash_size, params->flash_pagesize);
+
+ uint32_t flash_size;
+
+ stlink_read_mem32(sl, 0x1FFFF7E0, 4);
+ flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
+
+ printf("Flash size is %d KiB.\n", flash_size);
+
+ current_memory_map = make_memory_map(params, flash_size * 0x400);
int port = atoi(argv[1]);
return 0;
}
+static const char* const memory_map_template =
+ "<?xml version=\"1.0\"?>"
+ "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
+ " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
+ "<memory-map>"
+ " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%x\"/>" // code = sram, bootrom or flash; flash is bigger
+ " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%x\"/>" // sram 8k
+ " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%x\">"
+ " <property name=\"blocksize\">0x%x</property>"
+ " </memory>"
+ " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
+ " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
+ " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%x\"/>" // bootrom
+ " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x8\"/>" // option byte area
+ "</memory-map>";
+
+char* make_memory_map(const struct chip_params *params, uint32_t flash_size) {
+ /* This will be freed in serve() */
+ char* map = malloc(4096);
+ map[0] = '\0';
+
+ snprintf(map, 4096, memory_map_template,
+ flash_size,
+ params->sram_size,
+ flash_size, params->flash_pagesize,
+ params->bootrom_base, params->bootrom_size);
+
+ return map;
+}
+
#define CODE_BREAK_NUM 6
#define CODE_BREAK_LOW 0x01
static int flash_go(struct stlink* sl) {
int error = -1;
+ // Some kinds of clock settings do not allow writing to flash.
+ stlink_reset(sl);
+
for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
#ifdef DEBUG
printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
#endif
- stlink_erase_flash_page(sl, fb->addr);
+ unsigned length = fb->length;
+ for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += 0x400) {
+ #ifdef DEBUG
+ printf("flash_do: page %08x\n", page);
+ #endif
- if(!stlink_write_flash(sl, fb->addr, fb->data, fb->length) < 0) {
- fprintf(stderr, "Flash writing failed.\n");
- goto error;
+ stlink_erase_flash_page(sl, page);
+
+ if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
+ length > 0x400 ? 0x400 : length) < 0)
+ goto error;
}
+
}
+ stlink_reset(sl);
+
error = 0;
error:
printf("GDB connected.\n");
+ /*
+ * To allow resetting the chip from GDB it is required to
+ * emulate attaching and detaching to target.
+ */
+ unsigned int attached = 1;
+
while(1) {
char* packet;
const char* data = NULL;
if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
- data = c_memory_map;
+ data = current_memory_map;
if(data) {
unsigned data_length = strlen(data);
}
case 'v': {
- char *separator = strstr(packet, ":"), *params = "";
- if(separator == NULL) {
- separator = packet + strlen(packet);
- } else {
- params = separator + 1;
- }
+ char *params = NULL;
+ char *cmdName = strtok_r(packet, ":;", ¶ms);
- unsigned cmdNameLength = (separator - &packet[1]);
- char* cmdName = calloc(cmdNameLength + 1, 1);
- strncpy(cmdName, &packet[1], cmdNameLength);
+ cmdName++; // vCommand -> Command
if(!strcmp(cmdName, "FlashErase")) {
char *s_addr, *s_length;
} else {
reply = strdup("OK");
}
+ } else if(!strcmp(cmdName, "Kill")) {
+ attached = 0;
- stlink_reset(sl);
+ reply = strdup("OK");
}
if(reply == NULL)
reply = strdup("");
- free(cmdName);
-
break;
}
case 'c':
stlink_run(sl);
- printf("Core running, waiting for interrupt (either in chip or GDB).\n");
-
while(1) {
int status = gdb_check_for_interrupt(client);
if(status < 0) {
break;
}
- usleep(200000);
+ usleep(100000);
}
reply = strdup("S05"); // TRAP
break;
case '?':
- reply = strdup("S05"); // TRAP
+ if(attached) {
+ reply = strdup("S05"); // TRAP
+ } else {
+ /* Stub shall reply OK if not attached. */
+ reply = strdup("OK");
+ }
break;
case 'g':
break;
}
- case 'k': {
- // After this function will be entered afterwards, the
- // chip will be reset anyway. So this is a no-op.
+ case '!': {
+ /*
+ * Enter extended mode which allows restarting.
+ * We do support that always.
+ */
+
+ reply = strdup("OK");
- close(client);
- return 0;
+ break;
+ }
+
+ case 'R': {
+ /* Reset the core. */
+
+ stlink_reset(sl);
+ init_code_breakpoints(sl);
+
+ attached = 1;
+
+ reply = strdup("OK");
+
+ break;
}
default:
projects / fw / stlink / blobdiff