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Diffstat (limited to 'src/flash/nor/em357.c')
-rw-r--r--src/flash/nor/em357.c264
1 files changed, 108 insertions, 156 deletions
diff --git a/src/flash/nor/em357.c b/src/flash/nor/em357.c
index 2e40601..7c697f1 100644
--- a/src/flash/nor/em357.c
+++ b/src/flash/nor/em357.c
@@ -7,7 +7,7 @@
*
* Copyright (C) 2011 by Erik Botö
* erik.boto@pelagicore.com
- *
+ *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
@@ -23,6 +23,7 @@
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@@ -34,60 +35,58 @@
/* em357 register locations */
-#define EM357_FLASH_ACR 0x40008000
-#define EM357_FLASH_KEYR 0x40008004
-#define EM357_FLASH_OPTKEYR 0x40008008
-#define EM357_FLASH_SR 0x4000800C
-#define EM357_FLASH_CR 0x40008010
-#define EM357_FLASH_AR 0x40008014
-#define EM357_FLASH_OBR 0x4000801C
-#define EM357_FLASH_WRPR 0x40008020
+#define EM357_FLASH_ACR 0x40008000
+#define EM357_FLASH_KEYR 0x40008004
+#define EM357_FLASH_OPTKEYR 0x40008008
+#define EM357_FLASH_SR 0x4000800C
+#define EM357_FLASH_CR 0x40008010
+#define EM357_FLASH_AR 0x40008014
+#define EM357_FLASH_OBR 0x4000801C
+#define EM357_FLASH_WRPR 0x40008020
-#define EM357_FPEC_CLK 0x4000402c
+#define EM357_FPEC_CLK 0x4000402c
/* option byte location */
-#define EM357_OB_RDP 0x08040800
-#define EM357_OB_WRP0 0x08040808
-#define EM357_OB_WRP1 0x0804080A
-#define EM357_OB_WRP2 0x0804080C
+#define EM357_OB_RDP 0x08040800
+#define EM357_OB_WRP0 0x08040808
+#define EM357_OB_WRP1 0x0804080A
+#define EM357_OB_WRP2 0x0804080C
/* FLASH_CR register bits */
-#define FLASH_PG (1 << 0)
-#define FLASH_PER (1 << 1)
-#define FLASH_MER (1 << 2)
-#define FLASH_OPTPG (1 << 4)
-#define FLASH_OPTER (1 << 5)
-#define FLASH_STRT (1 << 6)
-#define FLASH_LOCK (1 << 7)
-#define FLASH_OPTWRE (1 << 9)
+#define FLASH_PG (1 << 0)
+#define FLASH_PER (1 << 1)
+#define FLASH_MER (1 << 2)
+#define FLASH_OPTPG (1 << 4)
+#define FLASH_OPTER (1 << 5)
+#define FLASH_STRT (1 << 6)
+#define FLASH_LOCK (1 << 7)
+#define FLASH_OPTWRE (1 << 9)
/* FLASH_SR register bits */
-#define FLASH_BSY (1 << 0)
-#define FLASH_PGERR (1 << 2)
-#define FLASH_WRPRTERR (1 << 4)
-#define FLASH_EOP (1 << 5)
+#define FLASH_BSY (1 << 0)
+#define FLASH_PGERR (1 << 2)
+#define FLASH_WRPRTERR (1 << 4)
+#define FLASH_EOP (1 << 5)
/* EM357_FLASH_OBR bit definitions (reading) */
-#define OPT_ERROR 0
-#define OPT_READOUT 1
+#define OPT_ERROR 0
+#define OPT_READOUT 1
/* register unlock keys */
-#define KEY1 0x45670123
-#define KEY2 0xCDEF89AB
+#define KEY1 0x45670123
+#define KEY2 0xCDEF89AB
-struct em357_options
-{
+struct em357_options {
uint16_t RDP;
uint16_t user_options;
uint16_t protection[3];
};
-struct em357_flash_bank
-{
+struct em357_flash_bank {
struct em357_options option_bytes;
struct working_area *write_algorithm;
int ppage_size;
@@ -103,9 +102,7 @@ FLASH_BANK_COMMAND_HANDLER(em357_flash_bank_command)
struct em357_flash_bank *em357_info;
if (CMD_ARGC < 6)
- {
return ERROR_COMMAND_SYNTAX_ERROR;
- }
em357_info = malloc(sizeof(struct em357_flash_bank));
bank->driver_priv = em357_info;
@@ -129,37 +126,32 @@ static int em357_wait_status_busy(struct flash_bank *bank, int timeout)
int retval = ERROR_OK;
/* wait for busy to clear */
- for (;;)
- {
+ for (;; ) {
retval = em357_get_flash_status(bank, &status);
if (retval != ERROR_OK)
return retval;
LOG_DEBUG("status: 0x%" PRIx32 "", status);
if ((status & FLASH_BSY) == 0)
break;
- if (timeout-- <= 0)
- {
+ if (timeout-- <= 0) {
LOG_ERROR("timed out waiting for flash");
return ERROR_FAIL;
}
alive_sleep(1);
}
- if (status & FLASH_WRPRTERR)
- {
+ if (status & FLASH_WRPRTERR) {
LOG_ERROR("em357 device protected");
retval = ERROR_FAIL;
}
- if (status & FLASH_PGERR)
- {
+ if (status & FLASH_PGERR) {
LOG_ERROR("em357 device programming failed");
retval = ERROR_FAIL;
}
/* Clear but report errors */
- if (status & (FLASH_WRPRTERR | FLASH_PGERR))
- {
+ if (status & (FLASH_WRPRTERR | FLASH_PGERR)) {
/* If this operation fails, we ignore it and report the original
* retval
*/
@@ -330,8 +322,7 @@ static int em357_protect_check(struct flash_bank *bank)
int num_bits;
int set;
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
@@ -344,8 +335,7 @@ static int em357_protect_check(struct flash_bank *bank)
/* each protection bit is for 4 * 2K pages */
num_bits = (bank->num_sectors / em357_info->ppage_size);
- for (i = 0; i < num_bits; i++)
- {
+ for (i = 0; i < num_bits; i++) {
set = 1;
if (protection & (1 << i))
set = 0;
@@ -362,16 +352,13 @@ static int em357_erase(struct flash_bank *bank, int first, int last)
struct target *target = bank->target;
int i;
- if (bank->target->state != TARGET_HALTED)
- {
+ if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if ((first == 0) && (last == (bank->num_sectors - 1)))
- {
return em357_mass_erase(bank);
- }
/* unlock flash registers */
int retval = target_write_u32(target, EM357_FLASH_KEYR, KEY1);
@@ -381,8 +368,7 @@ static int em357_erase(struct flash_bank *bank, int first, int last)
if (retval != ERROR_OK)
return retval;
- for (i = first; i <= last; i++)
- {
+ for (i = first; i <= last; i++) {
retval = target_write_u32(target, EM357_FLASH_CR, FLASH_PER);
if (retval != ERROR_OK)
return retval;
@@ -419,22 +405,19 @@ static int em357_protect(struct flash_bank *bank, int set, int first, int last)
em357_info = bank->driver_priv;
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- if ((first % em357_info->ppage_size) != 0)
- {
+ if ((first % em357_info->ppage_size) != 0) {
LOG_WARNING("aligned start protect sector to a %d sector boundary",
- em357_info->ppage_size);
+ em357_info->ppage_size);
first = first - (first % em357_info->ppage_size);
}
- if (((last + 1) % em357_info->ppage_size) != 0)
- {
+ if (((last + 1) % em357_info->ppage_size) != 0) {
LOG_WARNING("aligned end protect sector to a %d sector boundary",
- em357_info->ppage_size);
+ em357_info->ppage_size);
last++;
last = last - (last % em357_info->ppage_size);
last--;
@@ -449,8 +432,7 @@ static int em357_protect(struct flash_bank *bank, int set, int first, int last)
prot_reg[1] = (uint16_t)(protection >> 8);
prot_reg[2] = (uint16_t)(protection >> 16);
- for (i = first; i <= last; i++)
- {
+ for (i = first; i <= last; i++) {
reg = (i / em357_info->ppage_size) / 8;
bit = (i / em357_info->ppage_size) - (reg * 8);
@@ -461,7 +443,8 @@ static int em357_protect(struct flash_bank *bank, int set, int first, int last)
prot_reg[reg] |= (1 << bit);
}
- if ((status = em357_erase_options(bank)) != ERROR_OK)
+ status = em357_erase_options(bank);
+ if (retval != ERROR_OK)
return status;
em357_info->option_bytes.protection[0] = prot_reg[0];
@@ -472,7 +455,7 @@ static int em357_protect(struct flash_bank *bank, int set, int first, int last)
}
static int em357_write_block(struct flash_bank *bank, uint8_t *buffer,
- uint32_t offset, uint32_t count)
+ uint32_t offset, uint32_t count)
{
struct em357_flash_bank *em357_info = bank->driver_priv;
struct target *target = bank->target;
@@ -483,61 +466,63 @@ static int em357_write_block(struct flash_bank *bank, uint8_t *buffer,
struct armv7m_algorithm armv7m_info;
int retval = ERROR_OK;
- /* see contib/loaders/flash/stm32x.s for src, the same is used here except for
+ /* see contib/loaders/flash/stm32x.s for src, the same is used here except for
* a modified *_FLASH_BASE */
static const uint8_t em357_flash_write_code[] = {
- /* #define EM357_FLASH_CR_OFFSET 0x10 */
- /* #define EM357_FLASH_SR_OFFSET 0x0C */
- /* write: */
+ /* #define EM357_FLASH_CR_OFFSET 0x10
+ * #define EM357_FLASH_SR_OFFSET 0x0C
+ * write: */
0x08, 0x4c, /* ldr r4, EM357_FLASH_BASE */
0x1c, 0x44, /* add r4, r3 */
- /* write_half_word: */
+ /* write_half_word: */
0x01, 0x23, /* movs r3, #0x01 */
- 0x23, 0x61, /* str r3, [r4, #EM357_FLASH_CR_OFFSET] */
+ 0x23, 0x61, /* str r3, [r4,
+ *#EM357_FLASH_CR_OFFSET] */
0x30, 0xf8, 0x02, 0x3b, /* ldrh r3, [r0], #0x02 */
0x21, 0xf8, 0x02, 0x3b, /* strh r3, [r1], #0x02 */
- /* busy: */
- 0xe3, 0x68, /* ldr r3, [r4, #EM357_FLASH_SR_OFFSET] */
+ /* busy: */
+ 0xe3, 0x68, /* ldr r3, [r4,
+ *#EM357_FLASH_SR_OFFSET] */
0x13, 0xf0, 0x01, 0x0f, /* tst r3, #0x01 */
0xfb, 0xd0, /* beq busy */
0x13, 0xf0, 0x14, 0x0f, /* tst r3, #0x14 */
0x01, 0xd1, /* bne exit */
0x01, 0x3a, /* subs r2, r2, #0x01 */
0xf0, 0xd1, /* bne write_half_word */
- /* exit: */
+ /* exit: */
0x00, 0xbe, /* bkpt #0x00 */
0x00, 0x80, 0x00, 0x40, /* EM357_FLASH_BASE: .word 0x40008000 */
};
/* flash write code */
if (target_alloc_working_area(target, sizeof(em357_flash_write_code),
- &em357_info->write_algorithm) != ERROR_OK)
- {
+ &em357_info->write_algorithm) != ERROR_OK) {
LOG_WARNING("no working area available, can't do block memory writes");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- };
+ }
+ ;
- if ((retval = target_write_buffer(target, em357_info->write_algorithm->address,
- sizeof(em357_flash_write_code),
- (uint8_t*)em357_flash_write_code)) != ERROR_OK)
+ retval = target_write_buffer(target, em357_info->write_algorithm->address,
+ sizeof(em357_flash_write_code), (uint8_t *)em357_flash_write_code);
+ if (retval != ERROR_OK)
return retval;
/* memory buffer */
- while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK)
- {
+ while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) {
buffer_size /= 2;
- if (buffer_size <= 256)
- {
+ if (buffer_size <= 256) {
/* if we already allocated the writing code, but failed to get a
* buffer, free the algorithm */
if (em357_info->write_algorithm)
target_free_working_area(target, em357_info->write_algorithm);
- LOG_WARNING("no large enough working area available, can't do block memory writes");
+ LOG_WARNING(
+ "no large enough working area available, can't do block memory writes");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
- };
+ }
+ ;
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
armv7m_info.core_mode = ARMV7M_MODE_ANY;
@@ -547,13 +532,12 @@ static int em357_write_block(struct flash_bank *bank, uint8_t *buffer,
init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
init_reg_param(&reg_params[3], "r3", 32, PARAM_IN_OUT);
- while (count > 0)
- {
+ while (count > 0) {
uint32_t thisrun_count = (count > (buffer_size / 2)) ?
- (buffer_size / 2) : count;
+ (buffer_size / 2) : count;
- if ((retval = target_write_buffer(target, source->address,
- thisrun_count * 2, buffer)) != ERROR_OK)
+ retval = target_write_buffer(target, source->address, thisrun_count * 2, buffer);
+ if (retval != ERROR_OK)
break;
buf_set_u32(reg_params[0].value, 0, 32, source->address);
@@ -561,17 +545,14 @@ static int em357_write_block(struct flash_bank *bank, uint8_t *buffer,
buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
buf_set_u32(reg_params[3].value, 0, 32, 0);
- if ((retval = target_run_algorithm(target, 0, NULL, 4, reg_params,
- em357_info->write_algorithm->address,
- 0,
- 10000, &armv7m_info)) != ERROR_OK)
- {
+ retval = target_run_algorithm(target, 0, NULL, 4, reg_params,
+ em357_info->write_algorithm->address, 0, 10000, &armv7m_info);
+ if (retval != ERROR_OK) {
LOG_ERROR("error executing em357 flash write algorithm");
break;
}
- if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_PGERR)
- {
+ if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_PGERR) {
LOG_ERROR("flash memory not erased before writing");
/* Clear but report errors */
target_write_u32(target, EM357_FLASH_SR, FLASH_PGERR);
@@ -579,8 +560,7 @@ static int em357_write_block(struct flash_bank *bank, uint8_t *buffer,
break;
}
- if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_WRPRTERR)
- {
+ if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_WRPRTERR) {
LOG_ERROR("flash memory write protected");
/* Clear but report errors */
target_write_u32(target, EM357_FLASH_SR, FLASH_WRPRTERR);
@@ -605,7 +585,7 @@ static int em357_write_block(struct flash_bank *bank, uint8_t *buffer,
}
static int em357_write(struct flash_bank *bank, uint8_t *buffer,
- uint32_t offset, uint32_t count)
+ uint32_t offset, uint32_t count)
{
struct target *target = bank->target;
uint32_t words_remaining = (count / 2);
@@ -614,14 +594,12 @@ static int em357_write(struct flash_bank *bank, uint8_t *buffer,
uint32_t bytes_written = 0;
int retval;
- if (bank->target->state != TARGET_HALTED)
- {
+ if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- if (offset & 0x1)
- {
+ if (offset & 0x1) {
LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
}
@@ -635,20 +613,17 @@ static int em357_write(struct flash_bank *bank, uint8_t *buffer,
return retval;
/* multiple half words (2-byte) to be programmed? */
- if (words_remaining > 0)
- {
+ if (words_remaining > 0) {
/* try using a block write */
- if ((retval = em357_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
- {
- if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
- {
+ retval = em357_write_block(bank, buffer, offset, words_remaining);
+ if (retval != ERROR_OK) {
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
/* if block write failed (no sufficient working area),
* we use normal (slow) single dword accesses */
- LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
+ LOG_WARNING(
+ "couldn't use block writes, falling back to single memory accesses");
}
- }
- else
- {
+ } else {
buffer += words_remaining * 2;
address += words_remaining * 2;
words_remaining = 0;
@@ -658,8 +633,7 @@ static int em357_write(struct flash_bank *bank, uint8_t *buffer,
if ((retval != ERROR_OK) && (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE))
return retval;
- while (words_remaining > 0)
- {
+ while (words_remaining > 0) {
uint16_t value;
memcpy(&value, buffer + bytes_written, sizeof(uint16_t));
@@ -679,8 +653,7 @@ static int em357_write(struct flash_bank *bank, uint8_t *buffer,
address += 2;
}
- if (bytes_remaining)
- {
+ if (bytes_remaining) {
uint16_t value = 0xffff;
memcpy(&value, buffer + bytes_written, bytes_remaining);
@@ -721,8 +694,7 @@ static int em357_probe(struct flash_bank *bank)
LOG_INFO("flash size = %dkbytes", num_pages*page_size/1024);
- if (bank->sectors)
- {
+ if (bank->sectors) {
free(bank->sectors);
bank->sectors = NULL;
}
@@ -732,8 +704,7 @@ static int em357_probe(struct flash_bank *bank)
bank->num_sectors = num_pages;
bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
- for (i = 0; i < num_pages; i++)
- {
+ for (i = 0; i < num_pages; i++) {
bank->sectors[i].offset = i * page_size;
bank->sectors[i].size = page_size;
bank->sectors[i].is_erased = -1;
@@ -766,9 +737,7 @@ COMMAND_HANDLER(em357_handle_lock_command)
struct em357_flash_bank *em357_info = NULL;
if (CMD_ARGC < 1)
- {
return ERROR_COMMAND_SYNTAX_ERROR;
- }
struct flash_bank *bank;
int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
@@ -779,14 +748,12 @@ COMMAND_HANDLER(em357_handle_lock_command)
target = bank->target;
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- if (em357_erase_options(bank) != ERROR_OK)
- {
+ if (em357_erase_options(bank) != ERROR_OK) {
command_print(CMD_CTX, "em357 failed to erase options");
return ERROR_OK;
}
@@ -794,8 +761,7 @@ COMMAND_HANDLER(em357_handle_lock_command)
/* set readout protection */
em357_info->option_bytes.RDP = 0;
- if (em357_write_options(bank) != ERROR_OK)
- {
+ if (em357_write_options(bank) != ERROR_OK) {
command_print(CMD_CTX, "em357 failed to lock device");
return ERROR_OK;
}
@@ -810,9 +776,7 @@ COMMAND_HANDLER(em357_handle_unlock_command)
struct target *target = NULL;
if (CMD_ARGC < 1)
- {
return ERROR_COMMAND_SYNTAX_ERROR;
- }
struct flash_bank *bank;
int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
@@ -821,27 +785,24 @@ COMMAND_HANDLER(em357_handle_unlock_command)
target = bank->target;
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- if (em357_erase_options(bank) != ERROR_OK)
- {
+ if (em357_erase_options(bank) != ERROR_OK) {
command_print(CMD_CTX, "em357 failed to unlock device");
return ERROR_OK;
}
- if (em357_write_options(bank) != ERROR_OK)
- {
+ if (em357_write_options(bank) != ERROR_OK) {
command_print(CMD_CTX, "em357 failed to lock device");
return ERROR_OK;
}
command_print(CMD_CTX, "em357 unlocked.\n"
- "INFO: a reset or power cycle is required "
- "for the new settings to take effect.");
+ "INFO: a reset or power cycle is required "
+ "for the new settings to take effect.");
return ERROR_OK;
}
@@ -850,8 +811,7 @@ static int em357_mass_erase(struct flash_bank *bank)
{
struct target *target = bank->target;
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
@@ -888,9 +848,7 @@ COMMAND_HANDLER(em357_handle_mass_erase_command)
int i;
if (CMD_ARGC < 1)
- {
return ERROR_COMMAND_SYNTAX_ERROR;
- }
struct flash_bank *bank;
int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
@@ -898,20 +856,14 @@ COMMAND_HANDLER(em357_handle_mass_erase_command)
return retval;
retval = em357_mass_erase(bank);
- if (retval == ERROR_OK)
- {
+ if (retval == ERROR_OK) {
/* set all sectors as erased */
for (i = 0; i < bank->num_sectors; i++)
- {
bank->sectors[i].is_erased = 1;
- }
command_print(CMD_CTX, "em357 mass erase complete");
- }
- else
- {
+ } else
command_print(CMD_CTX, "em357 mass erase failed");
- }
return retval;
}
generated by cgit v1.1 at 2024-11-16 11:45:08 +0000