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-rw-r--r--src/flash/nor/nrf51.c306
-rw-r--r--tcl/target/nrf51_stlink.tcl4
2 files changed, 234 insertions, 76 deletions
diff --git a/src/flash/nor/nrf51.c b/src/flash/nor/nrf51.c
index 7820baf..88c318c 100644
--- a/src/flash/nor/nrf51.c
+++ b/src/flash/nor/nrf51.c
@@ -73,6 +73,8 @@ enum nrf51_uicr_registers {
NRF51_UICR_BASE = 0x10001000, /* User Information
* Configuration Regsters */
+ NRF51_UICR_SIZE = 252,
+
#define NRF51_UICR_REG(offset) (NRF51_UICR_BASE + offset)
NRF51_UICR_CLENR0 = NRF51_UICR_REG(0x000),
@@ -105,7 +107,12 @@ struct nrf51_info {
uint32_t code_page_size;
uint32_t code_memory_size;
- bool probed;
+ struct {
+ bool probed;
+ int (*write) (struct flash_bank *bank,
+ struct nrf51_info *chip,
+ const uint8_t *buffer, uint32_t offset, uint32_t count);
+ } bank[2];
struct target *target;
};
@@ -194,6 +201,14 @@ static const struct nrf51_device_spec nrf51_known_devices_table[] = {
};
+static int nrf51_bank_is_probed(struct flash_bank *bank)
+{
+ struct nrf51_info *chip = (struct nrf51_info *)bank->driver_priv;
+
+ assert(chip != NULL);
+
+ return chip->bank[bank->bank_number].probed;
+}
static int nrf51_probe(struct flash_bank *bank);
static int nrf51_get_probed_chip_if_halted(struct flash_bank *bank, struct nrf51_info **chip)
@@ -205,10 +220,13 @@ static int nrf51_get_probed_chip_if_halted(struct flash_bank *bank, struct nrf51
*chip = (struct nrf51_info *)bank->driver_priv;
- if (!(*chip)->probed)
+ int probed = nrf51_bank_is_probed(bank);
+ if (probed < 0)
+ return probed;
+ else if (!probed)
return nrf51_probe(bank);
-
- return ERROR_OK;
+ else
+ return ERROR_OK;
}
static int nrf51_wait_for_nvmc(struct nrf51_info *chip)
@@ -335,6 +353,10 @@ static int nrf51_protect_check(struct flash_bank *bank)
int res;
uint32_t clenr0;
+ /* UICR cannot be write protected so just return early */
+ if (bank->base == NRF51_UICR_BASE)
+ return ERROR_OK;
+
struct nrf51_info *chip = (struct nrf51_info *)bank->driver_priv;
assert(chip != NULL);
@@ -368,6 +390,10 @@ static int nrf51_protect(struct flash_bank *bank, int set, int first, int last)
uint32_t clenr0, ppfc;
struct nrf51_info *chip;
+ /* UICR cannot be write protected so just bail out early */
+ if (bank->base == NRF51_UICR_BASE)
+ return ERROR_FAIL;
+
res = nrf51_get_probed_chip_if_halted(bank, &chip);
if (res != ERROR_OK)
return res;
@@ -419,7 +445,6 @@ static int nrf51_probe(struct flash_bank *bank)
int res;
struct nrf51_info *chip = (struct nrf51_info *)bank->driver_priv;
-
res = target_read_u32(chip->target, NRF51_FICR_CONFIGID, &hwid);
if (res != ERROR_OK) {
LOG_ERROR("Couldn't read CONFIGID register");
@@ -436,65 +461,87 @@ static int nrf51_probe(struct flash_bank *bank)
break;
}
- if (spec) {
- LOG_INFO("nRF51822-%s(build code: %s) %ukB Flash",
- spec->variant, spec->build_code, spec->flash_size_kb);
- } else {
- LOG_WARNING("Unknown device (HWID 0x%08" PRIx32 ")", hwid);
+ if (!chip->bank[0].probed && !chip->bank[1].probed) {
+ if (spec)
+ LOG_INFO("nRF51822-%s(build code: %s) %ukB Flash",
+ spec->variant, spec->build_code, spec->flash_size_kb);
+ else
+ LOG_WARNING("Unknown device (HWID 0x%08" PRIx32 ")", hwid);
}
- res = target_read_u32(chip->target, NRF51_FICR_CODEPAGESIZE,
- &chip->code_page_size);
- if (res != ERROR_OK) {
- LOG_ERROR("Couldn't read code page size");
- return res;
- }
- res = target_read_u32(chip->target, NRF51_FICR_CODESIZE,
- &chip->code_memory_size);
- if (res != ERROR_OK) {
- LOG_ERROR("Couldn't read code memory size");
- return res;
- }
+ if (bank->base == NRF51_FLASH_BASE) {
+ res = target_read_u32(chip->target, NRF51_FICR_CODEPAGESIZE,
+ &chip->code_page_size);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Couldn't read code page size");
+ return res;
+ }
- if (spec && chip->code_memory_size != spec->flash_size_kb) {
- LOG_ERROR("Chip's reported Flash capacity does not match expected one");
- return ERROR_FAIL;
- }
+ res = target_read_u32(chip->target, NRF51_FICR_CODESIZE,
+ &chip->code_memory_size);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Couldn't read code memory size");
+ return res;
+ }
- bank->size = chip->code_memory_size * 1024;
- bank->num_sectors = bank->size / chip->code_page_size;
- bank->sectors = calloc(bank->num_sectors,
- sizeof((bank->sectors)[0]));
- if (!bank->sectors)
- return ERROR_FLASH_BANK_NOT_PROBED;
+ if (spec && chip->code_memory_size != spec->flash_size_kb) {
+ LOG_ERROR("Chip's reported Flash capacity does not match expected one");
+ return ERROR_FAIL;
+ }
- /* Fill out the sector information: all NRF51 sectors are the same size and
- * there is always a fixed number of them. */
- for (int i = 0; i < bank->num_sectors; i++) {
- bank->sectors[i].size = chip->code_page_size;
- bank->sectors[i].offset = i * chip->code_page_size;
+ bank->size = chip->code_memory_size * 1024;
+ bank->num_sectors = bank->size / chip->code_page_size;
+ bank->sectors = calloc(bank->num_sectors,
+ sizeof((bank->sectors)[0]));
+ if (!bank->sectors)
+ return ERROR_FLASH_BANK_NOT_PROBED;
+
+ /* Fill out the sector information: all NRF51 sectors are the same size and
+ * there is always a fixed number of them. */
+ for (int i = 0; i < bank->num_sectors; i++) {
+ bank->sectors[i].size = chip->code_page_size;
+ bank->sectors[i].offset = i * chip->code_page_size;
+
+ /* mark as unknown */
+ bank->sectors[i].is_erased = -1;
+ bank->sectors[i].is_protected = -1;
+ }
- /* mark as unknown */
- bank->sectors[i].is_erased = -1;
- bank->sectors[i].is_protected = -1;
- }
+ nrf51_protect_check(bank);
- nrf51_protect_check(bank);
+ chip->bank[0].probed = true;
+ } else {
+ bank->size = NRF51_UICR_SIZE;
+ bank->num_sectors = 1;
+ bank->sectors = calloc(bank->num_sectors,
+ sizeof((bank->sectors)[0]));
+ if (!bank->sectors)
+ return ERROR_FLASH_BANK_NOT_PROBED;
+
+ bank->sectors[0].size = bank->size;
+ bank->sectors[0].offset = 0;
- chip->probed = true;
+ /* mark as unknown */
+ bank->sectors[0].is_erased = 0;
+ bank->sectors[0].is_protected = 0;
+
+ chip->bank[1].probed = true;
+ }
return ERROR_OK;
}
static int nrf51_auto_probe(struct flash_bank *bank)
{
- struct nrf51_info *chip = (struct nrf51_info *)bank->driver_priv;
+ int probed = nrf51_bank_is_probed(bank);
- if (chip->probed)
+ if (probed < 0)
+ return probed;
+ else if (probed)
return ERROR_OK;
-
- return nrf51_probe(bank);
+ else
+ return nrf51_probe(bank);
}
static struct flash_sector *nrf51_find_sector_by_address(struct flash_bank *bank, uint32_t address)
@@ -522,9 +569,31 @@ static int nrf51_erase_page(struct nrf51_info *chip, struct flash_sector *sector
if (sector->is_protected)
return ERROR_FAIL;
- res = nrf51_nvmc_generic_erase(chip,
- NRF51_NVMC_ERASEPAGE,
- sector->offset);
+ if (sector->offset == NRF51_UICR_BASE) {
+ uint32_t ppfc;
+ res = target_read_u32(chip->target, NRF51_FICR_PPFC,
+ &ppfc);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Couldn't read PPFC register");
+ return res;
+ }
+
+ if ((ppfc & 0xFF) == 0xFF) {
+ LOG_ERROR("The chip was not pre-programmed with SoftDevice stack and UICR cannot be erased separately. Please issue mass erase before trying to write to this region");
+ return ERROR_FAIL;
+ };
+
+ res = nrf51_nvmc_generic_erase(chip,
+ NRF51_NVMC_ERASEUICR,
+ 0x00000001);
+
+
+ } else {
+ res = nrf51_nvmc_generic_erase(chip,
+ NRF51_NVMC_ERASEPAGE,
+ sector->offset);
+ }
+
if (res == ERROR_OK)
sector->is_erased = 1;
@@ -547,8 +616,10 @@ static int nrf51_write_page(struct flash_bank *bank, uint32_t offset, const uint
if (!sector->is_erased) {
res = nrf51_erase_page(chip, sector);
- if (res != ERROR_OK)
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to erase sector @ 0x%08"PRIx32, sector->offset);
goto error;
+ }
}
res = nrf51_nvmc_write_enable(chip);
@@ -586,18 +657,14 @@ static int nrf51_erase(struct flash_bank *bank, int first, int last)
return res;
}
-static int nrf51_write(struct flash_bank *bank, const uint8_t *buffer,
- uint32_t offset, uint32_t count)
+static int nrf51_code_flash_write(struct flash_bank *bank,
+ struct nrf51_info *chip,
+ const uint8_t *buffer, uint32_t offset, uint32_t count)
{
int res;
struct {
uint32_t start, end;
} region;
- struct nrf51_info *chip;
-
- res = nrf51_get_probed_chip_if_halted(bank, &chip);
- if (res != ERROR_OK)
- return res;
region.start = offset;
region.end = offset + count;
@@ -669,39 +736,118 @@ static int nrf51_write(struct flash_bank *bank, const uint8_t *buffer,
return ERROR_OK;
}
-FLASH_BANK_COMMAND_HANDLER(nrf51_flash_bank_command)
+static int nrf51_uicr_flash_write(struct flash_bank *bank,
+ struct nrf51_info *chip,
+ const uint8_t *buffer, uint32_t offset, uint32_t count)
{
- struct nrf51_info *chip;
+ int res;
+ uint8_t uicr[NRF51_UICR_SIZE];
+ struct flash_sector *sector = &bank->sectors[0];
- /* Create a new chip */
- chip = calloc(1, sizeof(*chip));
- if (!chip)
+ if ((offset + count) > NRF51_UICR_SIZE)
return ERROR_FAIL;
- chip->target = bank->target;
- chip->probed = false;
+ res = target_read_memory(bank->target,
+ NRF51_UICR_BASE,
+ 1,
+ NRF51_UICR_SIZE,
+ uicr);
- bank->driver_priv = chip;
+ if (res != ERROR_OK)
+ return res;
+
+ if (!sector->is_erased) {
+ res = nrf51_erase_page(chip, sector);
+ if (res != ERROR_OK)
+ return res;
+ }
- if (bank->base != NRF51_FLASH_BASE) {
- LOG_ERROR("Address 0x%08" PRIx32 " invalid bank address (try 0x%08" PRIx32
- "[nrf51 series] )",
- bank->base, NRF51_FLASH_BASE);
+ res = nrf51_nvmc_write_enable(chip);
+ if (res != ERROR_OK)
+ return res;
+
+ memcpy(&uicr[offset], buffer, count);
+
+ res = target_write_memory(bank->target,
+ NRF51_UICR_BASE,
+ 4,
+ NRF51_UICR_SIZE / 4,
+ uicr);
+ if (res != ERROR_OK) {
+ nrf51_nvmc_read_only(chip);
+ return res;
+ }
+
+ return nrf51_nvmc_read_only(chip);
+}
+
+
+static int nrf51_write(struct flash_bank *bank, const uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ int res;
+ struct nrf51_info *chip;
+
+ res = nrf51_get_probed_chip_if_halted(bank, &chip);
+ if (res != ERROR_OK)
+ return res;
+
+ return chip->bank[bank->bank_number].write(bank, chip, buffer, offset, count);
+}
+
+
+FLASH_BANK_COMMAND_HANDLER(nrf51_flash_bank_command)
+{
+ static struct nrf51_info *chip;
+
+ switch (bank->base) {
+ case NRF51_FLASH_BASE:
+ bank->bank_number = 0;
+ break;
+ case NRF51_UICR_BASE:
+ bank->bank_number = 1;
+ break;
+ default:
+ LOG_ERROR("Invalid bank address 0x%08" PRIx32, bank->base);
return ERROR_FAIL;
}
+ if (!chip) {
+ /* Create a new chip */
+ chip = calloc(1, sizeof(*chip));
+ if (!chip)
+ return ERROR_FAIL;
+
+ chip->target = bank->target;
+ }
+
+ switch (bank->base) {
+ case NRF51_FLASH_BASE:
+ chip->bank[bank->bank_number].write = nrf51_code_flash_write;
+ break;
+ case NRF51_UICR_BASE:
+ chip->bank[bank->bank_number].write = nrf51_uicr_flash_write;
+ break;
+ }
+
+ chip->bank[bank->bank_number].probed = false;
+ bank->driver_priv = chip;
+
return ERROR_OK;
}
COMMAND_HANDLER(nrf51_handle_mass_erase_command)
{
int res;
- struct flash_bank *bank;
+ struct flash_bank *bank = NULL;
+ struct target *target = get_current_target(CMD_CTX);
- res = get_flash_bank_by_num(0, &bank);
+ res = get_flash_bank_by_addr(target, NRF51_FLASH_BASE, true, &bank);
if (res != ERROR_OK)
return res;
+ assert(bank != NULL);
+
struct nrf51_info *chip;
res = nrf51_get_probed_chip_if_halted(bank, &chip);
@@ -710,7 +856,7 @@ COMMAND_HANDLER(nrf51_handle_mass_erase_command)
uint32_t ppfc;
- res = target_read_u32(chip->target, NRF51_FICR_PPFC,
+ res = target_read_u32(target, NRF51_FICR_PPFC,
&ppfc);
if (res != ERROR_OK) {
LOG_ERROR("Couldn't read PPFC register");
@@ -733,7 +879,19 @@ COMMAND_HANDLER(nrf51_handle_mass_erase_command)
for (int i = 0; i < bank->num_sectors; i++)
bank->sectors[i].is_erased = 1;
- return nrf51_protect_check(bank);
+ res = nrf51_protect_check(bank);
+ if (res != ERROR_OK) {
+ LOG_ERROR("Failed to check chip's write protection");
+ return res;
+ }
+
+ res = get_flash_bank_by_addr(target, NRF51_UICR_BASE, true, &bank);
+ if (res != ERROR_OK)
+ return res;
+
+ bank->sectors[0].is_erased = 1;
+
+ return ERROR_OK;
}
static int nrf51_info(struct flash_bank *bank, char *buf, int buf_size)
diff --git a/tcl/target/nrf51_stlink.tcl b/tcl/target/nrf51_stlink.tcl
index d37ec94..7bd888e 100644
--- a/tcl/target/nrf51_stlink.tcl
+++ b/tcl/target/nrf51_stlink.tcl
@@ -66,5 +66,5 @@ $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE
# non-"hla" targets it would be useful to have the following in the config.
# cortex_m reset_config sysresetreq
-set _FLASHNAME $_CHIPNAME.flash
-flash bank $_FLASHNAME nrf51 0x00000000 0 1 1 $_TARGETNAME
+flash bank $_CHIPNAME.flash nrf51 0x00000000 0 1 1 $_TARGETNAME
+flash bank $_CHIPNAME.uicr nrf51 0x10001000 0 1 1 $_TARGETNAME
generated by cgit v1.1 at 2024-10-25 23:19:13 +0000