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Diffstat (limited to 'src/flash/str7x.c')
-rw-r--r--src/flash/str7x.c257
1 files changed, 215 insertions, 42 deletions
diff --git a/src/flash/str7x.c b/src/flash/str7x.c
index 2e04f6b..8dc00d0 100644
--- a/src/flash/str7x.c
+++ b/src/flash/str7x.c
@@ -172,6 +172,8 @@ int str7x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char
str7x_build_block_list(bank);
+ str7x_info->write_algorithm = NULL;
+
return ERROR_OK;
}
@@ -181,7 +183,7 @@ u32 str7x_status(struct flash_bank_s *bank)
target_t *target = str7x_info->target;
u32 retval;
- target->type->read_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&retval);
+ target_read_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), &retval);
return retval;
}
@@ -192,7 +194,7 @@ u32 str7x_result(struct flash_bank_s *bank)
target_t *target = str7x_info->target;
u32 retval;
- target->type->read_memory(target, str7x_get_flash_adr(bank, FLASH_ER), 4, 1, (u8*)&retval);
+ target_read_u32(target, str7x_get_flash_adr(bank, FLASH_ER), &retval);
return retval;
}
@@ -242,14 +244,14 @@ int str7x_protect_check(struct flash_bank_s *bank)
target_t *target = str7x_info->target;
int i;
- int retval;
+ u32 retval;
if (str7x_info->target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
- target->type->read_memory(target, str7x_get_flash_adr(bank, FLASH_NVWPAR), 4, 1, (u8*)&retval);
+ target_read_u32(target, str7x_get_flash_adr(bank, FLASH_NVWPAR), &retval);
for (i = 0; i < bank->num_sectors; i++)
{
@@ -282,14 +284,17 @@ int str7x_erase(struct flash_bank_s *bank, int first, int last)
for (i = first; i <= last; i++)
erase_blocks |= (mem_layout[i].reg_offset << i);
+ /* clear FLASH_ER register */
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_ER), 0x0);
+
cmd = FLASH_SER;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
cmd = erase_blocks;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR1), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR1), cmd);
cmd = FLASH_SER|FLASH_WMS;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
while (((retval = str7x_status(bank)) & (FLASH_BSYA1|FLASH_BSYA2))){
usleep(1000);
@@ -324,23 +329,26 @@ int str7x_protect(struct flash_bank_s *bank, int set, int first, int last)
protect_blocks = 0xFFFFFFFF;
- if( set )
+ if (set)
{
for (i = first; i <= last; i++)
protect_blocks &= ~(mem_layout[i].reg_offset << i);
}
+
+ /* clear FLASH_ER register */
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_ER), 0x0);
cmd = FLASH_SPR;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
cmd = str7x_get_flash_adr(bank, FLASH_NVWPAR);
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_AR), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), cmd);
cmd = protect_blocks;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_DR0), cmd);
cmd = FLASH_SPR|FLASH_WMS;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
while (((retval = str7x_status(bank)) & (FLASH_BSYA1|FLASH_BSYA2))){
usleep(1000);
@@ -348,6 +356,8 @@ int str7x_protect(struct flash_bank_s *bank, int set, int first, int last)
retval = str7x_result(bank);
+ DEBUG("retval: 0x%8.8x", retval);
+
if (retval & FLASH_ERER)
return ERROR_FLASH_SECTOR_NOT_ERASED;
else if (retval & FLASH_WPF)
@@ -356,6 +366,123 @@ int str7x_protect(struct flash_bank_s *bank, int set, int first, int last)
return ERROR_OK;
}
+int str7x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+{
+ str7x_flash_bank_t *str7x_info = bank->driver_priv;
+ target_t *target = str7x_info->target;
+ u32 buffer_size = 8192;
+ working_area_t *source;
+ u32 address = bank->base + offset;
+ reg_param_t reg_params[5];
+ armv4_5_algorithm_t armv4_5_info;
+ int retval;
+
+ u32 str7x_flash_write_code[] = {
+ /* write: */
+ 0xe3a04201, /* mov r4, #0x10000000 */
+ 0xe5824000, /* str r4, [r2, #0x0] */
+ 0xe5821010, /* str r1, [r2, #0x10] */
+ 0xe4904004, /* ldr r4, [r0], #4 */
+ 0xe5824008, /* str r4, [r2, #0x8] */
+ 0xe4904004, /* ldr r4, [r0], #4 */
+ 0xe582400c, /* str r4, [r2, #0xc] */
+ 0xe3a04209, /* mov r4, #0x90000000 */
+ 0xe5824000, /* str r4, [r2, #0x0] */
+ /* busy: */
+ 0xe5924000, /* ldr r4, [r2, #0x0] */
+ 0xe3140016, /* tst r4, #0x16 */
+ 0x1afffffc, /* bne busy */
+ 0xe5924014, /* ldr r4, [r2, #0x14] */
+ 0xe31400ff, /* tst r4, #0xff */
+ 0x03140c01, /* tsteq r4, #0x100 */
+ 0x1a000002, /* bne exit */
+ 0xe2811008, /* add r1, r1, #0x8 */
+ 0xe2533001, /* subs r3, r3, #1 */
+ 0x1affffec, /* bne write */
+ /* exit: */
+ 0xeafffffe, /* b exit */
+ };
+
+ u8 str7x_flash_write_code_buf[80];
+ int i;
+
+ /* flash write code */
+ if (!str7x_info->write_algorithm)
+ {
+ if (target_alloc_working_area(target, 4 * 20, &str7x_info->write_algorithm) != ERROR_OK)
+ {
+ WARNING("no working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ };
+
+ /* convert flash writing code into a buffer in target endianness */
+ for (i = 0; i < 20; i++)
+ target_buffer_set_u32(target, str7x_flash_write_code_buf + i*4, str7x_flash_write_code[i]);
+
+ target_write_buffer(target, str7x_info->write_algorithm->address, 20 * 4, str7x_flash_write_code_buf);
+ }
+
+ /* memory buffer */
+ while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
+ {
+ buffer_size /= 2;
+ if (buffer_size <= 256)
+ {
+ /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
+ if (str7x_info->write_algorithm)
+ target_free_working_area(target, str7x_info->write_algorithm);
+
+ WARNING("no large enough working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+ };
+
+ armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
+ armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
+ armv4_5_info.core_state = ARMV4_5_STATE_ARM;
+
+ init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
+ init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
+ init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
+ init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);
+ init_reg_param(&reg_params[4], "r4", 32, PARAM_IN);
+
+ while (count > 0)
+ {
+ u32 thisrun_count = (count > (buffer_size / 8)) ? (buffer_size / 8) : count;
+
+ target_write_buffer(target, source->address, thisrun_count * 8, buffer);
+
+ buf_set_u32(reg_params[0].value, 0, 32, source->address);
+ buf_set_u32(reg_params[1].value, 0, 32, address);
+ buf_set_u32(reg_params[2].value, 0, 32, str7x_get_flash_adr(bank, FLASH_CR0));
+ buf_set_u32(reg_params[3].value, 0, 32, thisrun_count);
+
+ if ((retval = target->type->run_algorithm(target, 0, NULL, 5, reg_params, str7x_info->write_algorithm->address, str7x_info->write_algorithm->address + (19 * 4), 10000, &armv4_5_info)) != ERROR_OK)
+ {
+ ERROR("error executing str7x flash write algorithm");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ if (buf_get_u32(reg_params[4].value, 0, 32) != 0x00)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ buffer += thisrun_count * 8;
+ address += thisrun_count * 8;
+ count -= thisrun_count;
+ }
+
+ destroy_reg_param(&reg_params[0]);
+ destroy_reg_param(&reg_params[1]);
+ destroy_reg_param(&reg_params[2]);
+ destroy_reg_param(&reg_params[3]);
+ destroy_reg_param(&reg_params[4]);
+
+ return ERROR_OK;
+}
+
int str7x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
{
str7x_flash_bank_t *str7x_info = bank->driver_priv;
@@ -363,44 +490,80 @@ int str7x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
u32 dwords_remaining = (count / 8);
u32 bytes_remaining = (count & 0x00000007);
u32 address = bank->base + offset;
- u32 *wordbuffer = (u32*)buffer;
u32 bytes_written = 0;
u32 cmd;
u32 retval;
+
if (str7x_info->target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
+ if (offset & 0x7)
+ {
+ WARNING("offset 0x%x breaks required 8-byte alignment", offset);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
if (offset + count > bank->size)
return ERROR_FLASH_DST_OUT_OF_BANK;
-
+
+ /* clear FLASH_ER register */
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_ER), 0x0);
+
+ /* multiple dwords (8-byte) to be programmed? */
+ if (dwords_remaining > 0)
+ {
+ /* try using a block write */
+ if ((retval = str7x_write_block(bank, buffer, offset, dwords_remaining)) != ERROR_OK)
+ {
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
+ {
+ /* if block write failed (no sufficient working area),
+ * we use normal (slow) single dword accesses */
+ WARNING("couldn't use block writes, falling back to single memory accesses");
+ }
+ else if (retval == ERROR_FLASH_OPERATION_FAILED)
+ {
+ /* if an error occured, we examine the reason, and quit */
+ retval = str7x_result(bank);
+
+ ERROR("flash writing failed with error code: 0x%x", retval);
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+ }
+ else
+ {
+ buffer += dwords_remaining * 8;
+ address += dwords_remaining * 8;
+ dwords_remaining = 0;
+ }
+ }
+
while (dwords_remaining > 0)
{
// command
cmd = FLASH_DWPG;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
// address
- cmd = address;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_AR), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), address);
- // data byte 1
- cmd = wordbuffer[bytes_written/4];
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, (u8*)&cmd);
+ // data word 1
+ target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, buffer + bytes_written);
bytes_written += 4;
- // data byte 2
- cmd = wordbuffer[bytes_written/4];
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1), 4, 1, (u8*)&cmd);
+ // data word 2
+ target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1), 4, 1, buffer + bytes_written);
bytes_written += 4;
/* start programming cycle */
- cmd = FLASH_DWPG|FLASH_WMS;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ cmd = FLASH_DWPG | FLASH_WMS;
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
- while (((retval = str7x_status(bank)) & (FLASH_BSYA1|FLASH_BSYA2))){
+ while (((retval = str7x_status(bank)) & (FLASH_BSYA1 | FLASH_BSYA2)))
+ {
usleep(1000);
}
@@ -415,25 +578,39 @@ int str7x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
address += 8;
}
- while( bytes_remaining > 0 )
+ if (bytes_remaining)
{
+ u8 last_dword[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+ int i = 0;
+
+ while(bytes_remaining > 0)
+ {
+ last_dword[i++] = *(buffer + bytes_written);
+ bytes_remaining--;
+ bytes_written++;
+ }
+
// command
- cmd = FLASH_WPG;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ cmd = FLASH_DWPG;
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
// address
- cmd = address;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_AR), 4, 1, (u8*)&cmd);
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), address);
- // data byte
- cmd = buffer[bytes_written];
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, (u8*)&cmd);
+ // data word 1
+ target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, last_dword);
+ bytes_written += 4;
+
+ // data word 2
+ target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1), 4, 1, last_dword + 4);
+ bytes_written += 4;
/* start programming cycle */
- cmd = FLASH_WPG|FLASH_WMS;
- target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_CR0), 4, 1, (u8*)&cmd);
+ cmd = FLASH_DWPG | FLASH_WMS;
+ target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
- while (((retval = str7x_status(bank)) & (FLASH_BSYA1|FLASH_BSYA2))){
+ while (((retval = str7x_status(bank)) & (FLASH_BSYA1 | FLASH_BSYA2)))
+ {
usleep(1000);
}
@@ -443,12 +620,8 @@ int str7x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
return ERROR_FLASH_OPERATION_FAILED;
else if (retval & FLASH_WPF)
return ERROR_FLASH_OPERATION_FAILED;
-
- address++;
- bytes_remaining--;
- bytes_written++;
}
-
+
return ERROR_OK;
}
generated by cgit v1.1 at 2024-11-17 05:18:09 +0000