*
* Sector sizes in kiBytes:
* 1 MiByte part with 4 x 16, 1 x 64, 7 x 128.
+ * 1.5 MiByte part with 4 x 16, 1 x 64, 11 x 128.
* 2 MiByte part with 4 x 16, 1 x 64, 7 x 128, 4 x 16, 1 x 64, 7 x 128.
* 1 MiByte STM32F42x/43x part with DB1M Option set:
* 4 x 16, 1 x 64, 3 x 128, 4 x 16, 1 x 64, 3 x 128.
*
+ * STM32F7[2|3]
+ * 512 kiByte part with 4 x 16, 1 x 64, 3 x 128.
+ *
* STM32F7[4|5]
* 1 MiByte part with 4 x 32, 1 x 128, 3 x 256.
*
* RM0410
* http://www.st.com/resource/en/reference_manual/dm00224583.pdf
*
+ * RM0430
+ * http://www.st.com/resource/en/reference_manual/dm00305666.pdf
+ *
+ * RM0431
+ * http://www.st.com/resource/en/reference_manual/dm00305990.pdf
+ *
* STM32F1x series - notice that this code was copy, pasted and knocked
* into a stm32f2x driver, so in case something has been converted or
* bugs haven't been fixed, here are the original manuals:
#define STM32_FLASH_CR 0x40023c10
#define STM32_FLASH_OPTCR 0x40023c14
#define STM32_FLASH_OPTCR1 0x40023c18
+#define STM32_FLASH_OPTCR2 0x40023c1c
/* FLASH_CR register bits */
#define FLASH_PG (1 << 0)
#define OPTCR_START (1 << 1)
#define OPTCR_NDBANK (1 << 29) /* not dual bank mode */
#define OPTCR_DB1M (1 << 30) /* 1 MiB devices dual flash bank option */
+#define OPTCR_SPRMOD (1 << 31) /* switches PCROPi/nWPRi interpretation */
+
+/* STM32_FLASH_OPTCR2 register bits */
+#define OPTCR2_PCROP_RDP (1 << 31) /* erase PCROP zone when decreasing RDP */
/* register unlock keys */
#define KEY1 0x45670123
uint16_t user_options; /* bit 0-7 usual options, bit 8-11 extra options */
uint32_t protection;
uint32_t boot_addr;
+ uint32_t optcr2_pcrop;
};
struct stm32x_flash_bank {
struct stm32x_options option_bytes;
int probed;
bool has_large_mem; /* F42x/43x/469/479/7xx in dual bank mode */
- bool has_boot_addr; /* F7xx */
bool has_extra_options; /* F42x/43x/469/479/7xx */
+ bool has_boot_addr; /* F7xx */
+ bool has_optcr2_pcrop; /* F72x/73x */
+ int protection_bits; /* F413/423 */
uint32_t user_bank_size;
};
* whereas F7 6 bits (IWDG_SW and WWDG_SW) in user_options */
stm32x_info->option_bytes.user_options = optiondata & 0xfc;
stm32x_info->option_bytes.RDP = (optiondata >> 8) & 0xff;
- stm32x_info->option_bytes.protection = (optiondata >> 16) & 0xfff;
+ stm32x_info->option_bytes.protection =
+ (optiondata >> 16) & (~(0xffff << stm32x_info->protection_bits) & 0xffff);
if (stm32x_info->has_extra_options) {
/* F42x/43x/469/479 and 7xx have up to 4 bits of extra options */
- stm32x_info->option_bytes.user_options |= (optiondata >> 20) & 0xf00;
+ stm32x_info->option_bytes.user_options |= (optiondata >> 20) &
+ ((0xf00 << (stm32x_info->protection_bits - 12)) & 0xf00);
}
if (stm32x_info->has_large_mem || stm32x_info->has_boot_addr) {
}
}
+ if (stm32x_info->has_optcr2_pcrop) {
+ retval = target_read_u32(target, STM32_FLASH_OPTCR2, &optiondata);
+ if (retval != ERROR_OK)
+ return retval;
+
+ stm32x_info->option_bytes.optcr2_pcrop = optiondata;
+ if (stm32x_info->has_optcr2_pcrop &&
+ (stm32x_info->option_bytes.optcr2_pcrop & ~OPTCR2_PCROP_RDP)) {
+ LOG_INFO("PCROP Engaged");
+ }
+ } else {
+ stm32x_info->option_bytes.optcr2_pcrop = 0x0;
+ }
+
if (stm32x_info->option_bytes.RDP != 0xAA)
LOG_INFO("Device Security Bit Set");
/* rebuild option data */
optiondata = stm32x_info->option_bytes.user_options & 0xfc;
optiondata |= stm32x_info->option_bytes.RDP << 8;
- optiondata |= (stm32x_info->option_bytes.protection & 0x0fff) << 16;
+ optiondata |= (stm32x_info->option_bytes.protection &
+ (~(0xffff << stm32x_info->protection_bits))) << 16;
if (stm32x_info->has_extra_options) {
/* F42x/43x/469/479 and 7xx have up to 4 bits of extra options */
- optiondata |= (stm32x_info->option_bytes.user_options & 0xf00) << 20;
+ optiondata |= (stm32x_info->option_bytes.user_options &
+ ((0xf00 << (stm32x_info->protection_bits - 12)) & 0xf00)) << 20;
}
if (stm32x_info->has_large_mem || stm32x_info->has_boot_addr) {
return retval;
}
+ /* program extra pcrop register */
+ if (stm32x_info->has_optcr2_pcrop) {
+ retval = target_write_u32(target, STM32_FLASH_OPTCR2,
+ stm32x_info->option_bytes.optcr2_pcrop);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
/* program options */
retval = target_write_u32(target, STM32_FLASH_OPTCR, optiondata);
if (retval != ERROR_OK)
static int stm32x_protect_check(struct flash_bank *bank)
{
struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
+ struct flash_sector *prot_blocks;
+ int num_prot_blocks;
/* read write protection settings */
int retval = stm32x_read_options(bank);
return retval;
}
- if (stm32x_info->has_boot_addr && stm32x_info->has_large_mem) {
- /* F76x/77x: bit k protects sectors 2*k and 2*k+1 */
- for (int i = 0; i < (bank->num_sectors >> 1); i++) {
- if (stm32x_info->option_bytes.protection & (1 << i)) {
- bank->sectors[i << 1].is_protected = 0;
- bank->sectors[(i << 1) + 1].is_protected = 0;
- } else {
- bank->sectors[i << 1].is_protected = 1;
- bank->sectors[(i << 1) + 1].is_protected = 1;
- }
- }
+ if (bank->prot_blocks) {
+ num_prot_blocks = bank->num_prot_blocks;
+ prot_blocks = bank->prot_blocks;
} else {
- /* one protection bit per sector */
- for (int i = 0; i < bank->num_sectors; i++) {
- if (stm32x_info->option_bytes.protection & (1 << i))
- bank->sectors[i].is_protected = 0;
- else
- bank->sectors[i].is_protected = 1;
- }
+ num_prot_blocks = bank->num_sectors;
+ prot_blocks = bank->sectors;
}
+ for (int i = 0; i < num_prot_blocks; i++)
+ prot_blocks[i].is_protected =
+ ~(stm32x_info->option_bytes.protection >> i) & 1;
+
return ERROR_OK;
}
return retval;
}
- if (stm32x_info->has_boot_addr && stm32x_info->has_large_mem) {
- /* F76x/77x: bit k protects sectors 2*k and 2*k+1 */
- if ((first & 1) != 0 || (last & 1) != 1) {
- LOG_ERROR("sector protection must be double sector aligned");
- return ERROR_FAIL;
- } else {
- first >>= 1;
- last >>= 1;
- }
- }
-
for (int i = first; i <= last; i++) {
if (set)
stm32x_info->option_bytes.protection &= ~(1 << i);
{
struct target *target = bank->target;
struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
- int i;
+ int i, num_prot_blocks;
uint16_t flash_size_in_kb;
uint32_t flash_size_reg = 0x1FFF7A22;
uint16_t max_sector_size_in_kb = 128;
stm32x_info->has_large_mem = false;
stm32x_info->has_boot_addr = false;
stm32x_info->has_extra_options = false;
+ stm32x_info->has_optcr2_pcrop = false;
+ stm32x_info->protection_bits = 12; /* max. number of nWRPi bits (in FLASH_OPTCR !!!) */
+ num_prot_blocks = 0;
+
+ if (bank->sectors) {
+ free(bank->sectors);
+ bank->num_sectors = 0;
+ bank->sectors = NULL;
+ }
+
+ if (bank->prot_blocks) {
+ free(bank->prot_blocks);
+ bank->num_prot_blocks = 0;
+ bank->prot_blocks = NULL;
+ }
/* read stm32 device id register */
int retval = stm32x_get_device_id(bank, &device_id);
if (retval != ERROR_OK)
return retval;
LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
+ device_id &= 0xfff; /* only bits 0-11 are used further on */
/* set max flash size depending on family, id taken from AN2606 */
- switch (device_id & 0xfff) {
+ switch (device_id) {
case 0x411: /* F20x/21x */
case 0x413: /* F40x/41x */
max_flash_size_in_kb = 1024;
stm32x_info->has_boot_addr = true;
break;
+ case 0x452: /* F72x/73x */
+ max_flash_size_in_kb = 512;
+ flash_size_reg = 0x1FF07A22; /* yes, 0x1FF*0*7A22, not 0x1FF*F*7A22 */
+ stm32x_info->has_extra_options = true;
+ stm32x_info->has_boot_addr = true;
+ stm32x_info->has_optcr2_pcrop = true;
+ break;
+
+ case 0x463: /* F413x/423x */
+ max_flash_size_in_kb = 1536;
+ stm32x_info->has_extra_options = true;
+ stm32x_info->protection_bits = 15;
+ num_prot_blocks = 15;
+ break;
+
default:
LOG_WARNING("Cannot identify target as a STM32 family.");
return ERROR_FAIL;
/* did we assign flash size? */
assert(flash_size_in_kb != 0xffff);
- /* Devices with > 1024 kiByte always are dual-banked */
- if (flash_size_in_kb > 1024)
- stm32x_info->has_large_mem = true;
-
/* F42x/43x/469/479 1024 kiByte devices have a dual bank option */
- if ((device_id & 0xfff) == 0x419 || (device_id & 0xfff) == 0x434) {
+ if ((device_id == 0x419) || (device_id == 0x434)) {
uint32_t optiondata;
retval = target_read_u32(target, STM32_FLASH_OPTCR, &optiondata);
if (retval != ERROR_OK) {
}
/* F76x/77x devices have a dual bank option */
- if ((device_id & 0xfff) == 0x451) {
+ if (device_id == 0x451) {
uint32_t optiondata;
retval = target_read_u32(target, STM32_FLASH_OPTCR, &optiondata);
if (retval != ERROR_OK) {
int num_pages = flash_size_in_kb / max_sector_size_in_kb
+ (stm32x_info->has_large_mem ? 8 : 4);
- if (bank->sectors) {
- free(bank->sectors);
- bank->sectors = NULL;
- }
-
bank->base = base_address;
bank->num_sectors = num_pages;
bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
bank->size = 0;
LOG_DEBUG("allocated %d sectors", num_pages);
+ /* F76x/77x in dual bank mode */
+ if ((device_id == 0x451) && stm32x_info->has_large_mem)
+ num_prot_blocks = num_pages >> 1;
+
+ if (num_prot_blocks) {
+ bank->prot_blocks = malloc(sizeof(struct flash_sector) * num_prot_blocks);
+ for (i = 0; i < num_prot_blocks; i++)
+ bank->prot_blocks[i].is_protected = 0;
+ LOG_DEBUG("allocated %d prot blocks", num_prot_blocks);
+ }
+
if (stm32x_info->has_large_mem) {
/* dual-bank */
setup_bank(bank, 0, flash_size_in_kb >> 1, max_sector_size_in_kb);
setup_bank(bank, num_pages >> 1, flash_size_in_kb >> 1,
max_sector_size_in_kb);
+
+ /* F767x/F77x in dual mode, one protection bit refers to two adjacent sectors */
+ if (device_id == 0x451) {
+ for (i = 0; i < num_prot_blocks; i++) {
+ bank->prot_blocks[i].offset = bank->sectors[i << 1].offset;
+ bank->prot_blocks[i].size = bank->sectors[i << 1].size << 1;
+ }
+ }
} else {
/* single-bank */
setup_bank(bank, 0, flash_size_in_kb, max_sector_size_in_kb);
+
+ /* F413/F423, sectors 14 and 15 share one common protection bit */
+ if (device_id == 0x463) {
+ for (i = 0; i < num_prot_blocks; i++) {
+ bank->prot_blocks[i].offset = bank->sectors[i].offset;
+ bank->prot_blocks[i].size = bank->sectors[i].size;
+ }
+ bank->prot_blocks[num_prot_blocks - 1].size <<= 1;
+ }
}
+ bank->num_prot_blocks = num_prot_blocks;
assert((bank->size >> 10) == flash_size_in_kb);
stm32x_info->probed = 1;
case 0x1001:
rev_str = "Z";
break;
+
+ case 0x2000:
+ rev_str = "B";
+ break;
+
+ case 0x3000:
+ rev_str = "C";
+ break;
}
break;
}
break;
+ case 0x452:
+ device_str = "STM32F7[2|3]x";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+ }
+ break;
+
+ case 0x463:
+ device_str = "STM32F4[1|2]3";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+ }
+ break;
+
default:
snprintf(buf, buf_size, "Cannot identify target as a STM32F2/4/7\n");
return ERROR_FAIL;
target = bank->target;
if (target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
+ LOG_INFO("Target not halted");
+ /* return ERROR_TARGET_NOT_HALTED; */
}
if (stm32x_read_options(bank) != ERROR_OK) {
target = bank->target;
if (target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
+ LOG_INFO("Target not halted");
+ /* return ERROR_TARGET_NOT_HALTED; */
}
if (stm32x_read_options(bank) != ERROR_OK) {
/* clear readout protection and complementary option bytes
* this will also force a device unlock if set */
stm32x_info->option_bytes.RDP = 0xAA;
+ if (stm32x_info->has_optcr2_pcrop) {
+ stm32x_info->option_bytes.optcr2_pcrop = OPTCR2_PCROP_RDP | (~1 << bank->num_sectors);
+ }
if (stm32x_write_options(bank) != ERROR_OK) {
command_print(CMD_CTX, "%s failed to unlock device", bank->driver->name);
" boot_add0 0x%04X, boot_add1 0x%04X",
stm32x_info->option_bytes.user_options,
boot_addr & 0xffff, (boot_addr & 0xffff0000) >> 16);
+ if (stm32x_info->has_optcr2_pcrop) {
+ command_print(CMD_CTX, "stm32f2x optcr2_pcrop 0x%08X",
+ stm32x_info->option_bytes.optcr2_pcrop);
+ }
} else {
- command_print(CMD_CTX, "stm32f2x user_options 0x%03X,",
+ command_print(CMD_CTX, "stm32f2x user_options 0x%03X",
stm32x_info->option_bytes.user_options);
}
} else {
int retval;
struct flash_bank *bank;
struct stm32x_flash_bank *stm32x_info = NULL;
- uint16_t user_options, boot_addr0, boot_addr1;
+ uint16_t user_options, boot_addr0, boot_addr1, options_mask;
if (CMD_ARGC < 1) {
command_print(CMD_CTX, "stm32f2x options_write <bank> ...");
}
COMMAND_PARSE_NUMBER(u16, CMD_ARGV[1], user_options);
- if (user_options & (stm32x_info->has_extra_options ? ~0xffc : ~0xfc)) {
+ options_mask = !stm32x_info->has_extra_options ? ~0xfc :
+ ~(((0xf00 << (stm32x_info->protection_bits - 12)) | 0xff) & 0xffc);
+ if (user_options & options_mask) {
command_print(CMD_CTX, "stm32f2x invalid user_options");
- return ERROR_COMMAND_SYNTAX_ERROR;
+ return ERROR_COMMAND_ARGUMENT_INVALID;
}
stm32x_info->option_bytes.user_options = user_options;
return retval;
}
+COMMAND_HANDLER(stm32f2x_handle_optcr2_write_command)
+{
+ int retval;
+ struct flash_bank *bank;
+ struct stm32x_flash_bank *stm32x_info = NULL;
+ uint32_t optcr2_pcrop;
+
+ if (CMD_ARGC != 2) {
+ command_print(CMD_CTX, "stm32f2x optcr2_write <bank> <optcr2_value>");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
+ if (ERROR_OK != retval)
+ return retval;
+
+ stm32x_info = bank->driver_priv;
+ if (!stm32x_info->has_optcr2_pcrop) {
+ command_print(CMD_CTX, "no optcr2 register");
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+ }
+
+ command_print(CMD_CTX, "INFO: To disable PCROP, set PCROP_RDP"
+ " with PCROPi bits STILL SET, then\nlock device and"
+ " finally unlock it. Clears PCROP and mass erases flash.");
+
+ retval = stm32x_read_options(bank);
+ if (ERROR_OK != retval)
+ return retval;
+
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], optcr2_pcrop);
+ stm32x_info->option_bytes.optcr2_pcrop = optcr2_pcrop;
+
+ if (stm32x_write_options(bank) != ERROR_OK) {
+ command_print(CMD_CTX, "stm32f2x failed to write options");
+ return ERROR_OK;
+ }
+
+ command_print(CMD_CTX, "stm32f2x optcr2_write complete.");
+ return retval;
+}
+
static const struct command_registration stm32x_exec_command_handlers[] = {
{
.name = "lock",
.name = "options_write",
.handler = stm32f2x_handle_options_write_command,
.mode = COMMAND_EXEC,
- .usage = "bank_id user_options [ boot_add0 boot_add1]",
+ .usage = "bank_id user_options [ boot_add0 boot_add1 ]",
.help = "Write option bytes",
},
+ {
+ .name = "optcr2_write",
+ .handler = stm32f2x_handle_optcr2_write_command,
+ .mode = COMMAND_EXEC,
+ .usage = "bank_id optcr2",
+ .help = "Write optcr2 word",
+ },
+
COMMAND_REGISTRATION_DONE
};
projects / openocd / commitdiff