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Diffstat (limited to 'src/flash/nor/lpc2000.c')
-rw-r--r--src/flash/nor/lpc2000.c199
1 files changed, 120 insertions, 79 deletions
diff --git a/src/flash/nor/lpc2000.c b/src/flash/nor/lpc2000.c
index 43f45c81..06f3ec42 100644
--- a/src/flash/nor/lpc2000.c
+++ b/src/flash/nor/lpc2000.c
@@ -68,7 +68,6 @@ typedef enum {
struct lpc2000_flash_bank {
lpc2000_variant variant;
- struct working_area *iap_working_area;
uint32_t cclk;
int cmd51_dst_boundary;
int cmd51_can_256b;
@@ -252,53 +251,57 @@ static int lpc2000_build_sector_list(struct flash_bank *bank)
return ERROR_OK;
}
-/* call LPC1700/LPC2000 IAP function
+/* this function allocates and initializes working area used for IAP algorithm
* uses 180 bytes working area
* 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
* 0x8 to 0x1f: command parameter table (1+5 words)
* 0x20 to 0x33: command result table (1+4 words)
* 0x34 to 0xb3: stack (only 128b needed)
*/
-static int lpc2000_iap_call(struct flash_bank *bank, int code, uint32_t param_table[5], uint32_t result_table[4])
+
+static int lpc2000_iap_working_area_init(struct flash_bank *bank, struct working_area **iap_working_area)
{
- int retval;
- struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
struct target *target = bank->target;
- /* regrab previously allocated working_area, or allocate a new one */
- if (!lpc2000_info->iap_working_area) {
- uint8_t jump_gate[8];
-
- /* make sure we have a working area */
- if (target_alloc_working_area(target, 180, &lpc2000_info->iap_working_area) != ERROR_OK) {
- LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
- return ERROR_FLASH_OPERATION_FAILED;
- }
+ if (target_alloc_working_area(target, 180, iap_working_area) != ERROR_OK) {
+ LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
- /* write IAP code to working area */
- switch (lpc2000_info->variant) {
- case lpc1700:
- target_buffer_set_u32(target, jump_gate, ARMV4_5_T_BX(12));
- target_buffer_set_u32(target, jump_gate + 4, ARMV5_T_BKPT(0));
- break;
- case lpc2000_v1:
- case lpc2000_v2:
- target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
- target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
- break;
- default:
- LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
- exit(-1);
- }
+ struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
+ uint8_t jump_gate[8];
- retval = target_write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate);
- if (retval != ERROR_OK) {
- LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)",
- lpc2000_info->iap_working_area->address);
- return retval;
- }
+ /* write IAP code to working area */
+ switch (lpc2000_info->variant) {
+ case lpc1700:
+ target_buffer_set_u32(target, jump_gate, ARMV4_5_T_BX(12));
+ target_buffer_set_u32(target, jump_gate + 4, ARMV5_T_BKPT(0));
+ break;
+ case lpc2000_v1:
+ case lpc2000_v2:
+ target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
+ target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
+ break;
+ default:
+ LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
+ exit(-1);
}
+ int retval = target_write_memory(target, (*iap_working_area)->address, 4, 2, jump_gate);
+ if (retval != ERROR_OK)
+ LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)",
+ (*iap_working_area)->address);
+
+ return retval;
+}
+
+/* call LPC1700/LPC2000 IAP function */
+
+static int lpc2000_iap_call(struct flash_bank *bank, struct working_area *iap_working_area, int code,
+ uint32_t param_table[5], uint32_t result_table[4])
+{
+ struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
+
struct arm_algorithm arm_algo; /* for LPC2000 */
struct armv7m_algorithm armv7m_info; /* for LPC1700 */
uint32_t iap_entry_point = 0; /* to make compiler happier */
@@ -321,10 +324,11 @@ static int lpc2000_iap_call(struct flash_bank *bank, int code, uint32_t param_ta
exit(-1);
}
+ struct target *target = bank->target;
struct mem_param mem_params[2];
/* command parameter table */
- init_mem_param(&mem_params[0], lpc2000_info->iap_working_area->address + 8, 6 * 4, PARAM_OUT);
+ init_mem_param(&mem_params[0], iap_working_area->address + 8, 6 * 4, PARAM_OUT);
target_buffer_set_u32(target, mem_params[0].value, code);
target_buffer_set_u32(target, mem_params[0].value + 0x04, param_table[0]);
target_buffer_set_u32(target, mem_params[0].value + 0x08, param_table[1]);
@@ -335,13 +339,13 @@ static int lpc2000_iap_call(struct flash_bank *bank, int code, uint32_t param_ta
struct reg_param reg_params[5];
init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
- buf_set_u32(reg_params[0].value, 0, 32, lpc2000_info->iap_working_area->address + 0x08);
+ buf_set_u32(reg_params[0].value, 0, 32, iap_working_area->address + 0x08);
/* command result table */
- init_mem_param(&mem_params[1], lpc2000_info->iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
+ init_mem_param(&mem_params[1], iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
- buf_set_u32(reg_params[1].value, 0, 32, lpc2000_info->iap_working_area->address + 0x20);
+ buf_set_u32(reg_params[1].value, 0, 32, iap_working_area->address + 0x20);
/* IAP entry point */
init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
@@ -351,28 +355,28 @@ static int lpc2000_iap_call(struct flash_bank *bank, int code, uint32_t param_ta
case lpc1700:
/* IAP stack */
init_reg_param(&reg_params[3], "sp", 32, PARAM_OUT);
- buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
+ buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + 0xb4);
/* return address */
init_reg_param(&reg_params[4], "lr", 32, PARAM_OUT);
- buf_set_u32(reg_params[4].value, 0, 32, (lpc2000_info->iap_working_area->address + 0x04) | 1);
+ buf_set_u32(reg_params[4].value, 0, 32, (iap_working_area->address + 0x04) | 1);
/* bit0 of LR = 1 to return in Thumb mode */
- target_run_algorithm(target, 2, mem_params, 5, reg_params, lpc2000_info->iap_working_area->address, 0,
- 10000, &armv7m_info);
+ target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address, 0, 10000,
+ &armv7m_info);
break;
case lpc2000_v1:
case lpc2000_v2:
/* IAP stack */
init_reg_param(&reg_params[3], "sp_svc", 32, PARAM_OUT);
- buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
+ buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + 0xb4);
/* return address */
init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
- buf_set_u32(reg_params[4].value, 0, 32, lpc2000_info->iap_working_area->address + 0x04);
+ buf_set_u32(reg_params[4].value, 0, 32, iap_working_area->address + 0x04);
- target_run_algorithm(target, 2, mem_params, 5, reg_params, lpc2000_info->iap_working_area->address,
- lpc2000_info->iap_working_area->address + 0x4, 10000, &arm_algo);
+ target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address,
+ iap_working_area->address + 0x4, 10000, &arm_algo);
break;
default:
LOG_ERROR("BUG: unknown lpc2000->variant encountered");
@@ -408,15 +412,22 @@ static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
uint32_t param_table[5] = {0};
uint32_t result_table[4];
+ struct working_area *iap_working_area;
+
+ int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
- for (int i = first; i <= last; i++) {
+ if (retval != ERROR_OK)
+ return retval;
+
+ for (int i = first; i <= last && retval == ERROR_OK; i++) {
/* check single sector */
param_table[0] = param_table[1] = i;
- int status_code = lpc2000_iap_call(bank, 53, param_table, result_table);
+ int status_code = lpc2000_iap_call(bank, iap_working_area, 53, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
- return ERROR_FLASH_OPERATION_FAILED;
+ retval = ERROR_FLASH_OPERATION_FAILED;
+ break;
case LPC2000_CMD_SUCCESS:
bank->sectors[i].is_erased = 1;
break;
@@ -427,7 +438,7 @@ static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
bank->sectors[i].is_erased = 0;
break;
case LPC2000_BUSY:
- return ERROR_FLASH_BUSY;
+ retval = ERROR_FLASH_BUSY;
break;
default:
LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
@@ -435,7 +446,10 @@ static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
}
}
- return ERROR_OK;
+ struct target *target = bank->target;
+ target_free_working_area(target, iap_working_area);
+
+ return retval;
}
/*
@@ -473,7 +487,6 @@ FLASH_BANK_COMMAND_HANDLER(lpc2000_flash_bank_command)
return ERROR_FLASH_BANK_INVALID;
}
- lpc2000_info->iap_working_area = NULL;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[7], lpc2000_info->cclk);
lpc2000_info->calc_checksum = 0;
lpc2000_build_sector_list(bank);
@@ -501,38 +514,53 @@ static int lpc2000_erase(struct flash_bank *bank, int first, int last)
param_table[2] = lpc2000_info->cclk;
uint32_t result_table[4];
+ struct working_area *iap_working_area;
+
+ int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
+
+ if (retval != ERROR_OK)
+ return retval;
/* Prepare sectors */
- int status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
+ int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
- return ERROR_FLASH_OPERATION_FAILED;
+ retval = ERROR_FLASH_OPERATION_FAILED;
+ break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
- return ERROR_FLASH_SECTOR_INVALID;
+ retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
- return ERROR_FLASH_OPERATION_FAILED;
+ retval = ERROR_FLASH_OPERATION_FAILED;
+ break;
}
- /* Erase sectors */
- status_code = lpc2000_iap_call(bank, 52, param_table, result_table);
- switch (status_code) {
- case ERROR_FLASH_OPERATION_FAILED:
- return ERROR_FLASH_OPERATION_FAILED;
- case LPC2000_CMD_SUCCESS:
- break;
- case LPC2000_INVALID_SECTOR:
- return ERROR_FLASH_SECTOR_INVALID;
- break;
- default:
- LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
- return ERROR_FLASH_OPERATION_FAILED;
+ if (retval == ERROR_OK) {
+ /* Erase sectors */
+ status_code = lpc2000_iap_call(bank, iap_working_area, 52, param_table, result_table);
+ switch (status_code) {
+ case ERROR_FLASH_OPERATION_FAILED:
+ retval = ERROR_FLASH_OPERATION_FAILED;
+ break;
+ case LPC2000_CMD_SUCCESS:
+ break;
+ case LPC2000_INVALID_SECTOR:
+ retval = ERROR_FLASH_SECTOR_INVALID;
+ break;
+ default:
+ LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
+ retval = ERROR_FLASH_OPERATION_FAILED;
+ break;
+ }
}
- return ERROR_OK;
+ struct target *target = bank->target;
+ target_free_working_area(target, iap_working_area);
+
+ return retval;
}
static int lpc2000_protect(struct flash_bank *bank, int set, int first, int last)
@@ -596,11 +624,19 @@ static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offs
buf_set_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
}
+ struct working_area *iap_working_area;
+
+ int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
+
+ if (retval != ERROR_OK)
+ return retval;
+
struct working_area *download_area;
/* allocate a working area */
if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK) {
LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
+ target_free_working_area(target, iap_working_area);
return ERROR_FLASH_OPERATION_FAILED;
}
@@ -608,7 +644,6 @@ static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offs
uint32_t bytes_written = 0;
uint32_t param_table[5] = {0};
uint32_t result_table[4];
- int retval = ERROR_OK;
while (bytes_remaining > 0) {
uint32_t thisrun_bytes;
@@ -624,7 +659,7 @@ static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offs
/* Prepare sectors */
param_table[0] = first_sector;
param_table[1] = last_sector;
- int status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
+ int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
@@ -666,7 +701,7 @@ static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offs
param_table[1] = download_area->address;
param_table[2] = thisrun_bytes;
param_table[3] = lpc2000_info->cclk;
- status_code = lpc2000_iap_call(bank, 51, param_table, result_table);
+ status_code = lpc2000_iap_call(bank, iap_working_area, 51, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
@@ -693,6 +728,7 @@ static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offs
bytes_written += thisrun_bytes;
}
+ target_free_working_area(target, iap_working_area);
target_free_working_area(target, download_area);
return retval;
@@ -747,18 +783,23 @@ COMMAND_HANDLER(lpc2000_handle_part_id_command)
uint32_t param_table[5] = {0};
uint32_t result_table[4];
+ struct working_area *iap_working_area;
+
+ retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
- int status_code = lpc2000_iap_call(bank, 54, param_table, result_table);
+ if (retval != ERROR_OK)
+ return retval;
+
+ int status_code = lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table);
if (status_code != 0x0) {
if (status_code == ERROR_FLASH_OPERATION_FAILED) {
command_print(CMD_CTX, "no sufficient working area specified, can't access LPC2000 IAP interface");
- return ERROR_OK;
- }
- command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
+ } else
+ command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
} else
command_print(CMD_CTX, "lpc2000 part id: 0x%8.8" PRIx32, result_table[0]);
- return ERROR_OK;
+ return retval;
}
static const struct command_registration lpc2000_exec_command_handlers[] = {
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-10-16 21:28:56 +0000