fix flash info - now reports erased state properly

git-svn-id: svn://svn.berlios.de/openocd/trunk@534 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/flash/ecos.c

@@ -45,7 +45,6 @@ int ecosflash_erase(struct flash_bank_s *bank, int first, int last);
 int ecosflash_protect(struct flash_bank_s *bank, int set, int first, int last);
 int ecosflash_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
 int ecosflash_probe(struct flash_bank_s *bank);
-int ecosflash_erase_check(struct flash_bank_s *bank);
 int ecosflash_protect_check(struct flash_bank_s *bank);
 int ecosflash_info(struct flash_bank_s *bank, char *buf, int buf_size);
 
@@ -64,7 +63,7 @@ flash_driver_t ecosflash_flash =
 	.write = ecosflash_write,
 	.probe = ecosflash_probe,
 	.auto_probe = ecosflash_probe,
-	.erase_check = ecosflash_erase_check,
+	.erase_check = default_flash_blank_check,
 	.protect_check = ecosflash_protect_check,
 	.info = ecosflash_info
 };
@@ -444,11 +443,6 @@ int ecosflash_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count
 }
 
 
-int ecosflash_erase_check(struct flash_bank_s *bank)
-{
-	return ERROR_OK;
-}
-
 int ecosflash_protect_check(struct flash_bank_s *bank)
 {
 	return ERROR_OK;

src/flash/flash.c

@@ -334,7 +334,11 @@ int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char
 			char buf[1024];
 
 			/* attempt auto probe */
-			p->driver->auto_probe(p);
+			if ((retval = p->driver->auto_probe(p)) != ERROR_OK)
+				return retval;
+			
+			if ((retval = p->driver->erase_check(p)) != ERROR_OK)
+				return retval;
 
 			command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
 						i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
@@ -1049,3 +1053,51 @@ int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd
 
 	return ERROR_OK;
 }
+
+
+int default_flash_blank_check(struct flash_bank_s *bank)
+{
+	target_t *target = bank->target;
+	u8 buffer[1024];
+	int buffer_size=sizeof(buffer);
+	int i;
+	int nBytes;
+	
+	if (bank->target->state != TARGET_HALTED)
+	{
+		return ERROR_TARGET_NOT_HALTED;
+	}
+	
+	
+	for (i = 0; i < bank->num_sectors; i++)
+	{
+		int j;
+		bank->sectors[i].is_erased = 1;
+		
+		for (j=0; j<bank->sectors[i].size; j+=buffer_size)
+		{
+			int chunk;
+			int retval;
+			chunk=buffer_size;
+			if (chunk>(j-bank->sectors[i].size))
+			{
+				chunk=(j-bank->sectors[i].size);
+			}
+			
+			retval=target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, chunk/4, buffer);
+			if (retval!=ERROR_OK)
+				return retval;
+		
+			for (nBytes = 0; nBytes < chunk; nBytes++)
+			{
+				if (buffer[nBytes] != 0xFF)
+				{
+					bank->sectors[i].is_erased = 0;
+					break;
+				}
+			}
+		}
+	}
+	
+	return ERROR_OK;
+}

src/flash/flash.h

@@ -78,6 +78,7 @@ extern int flash_erase_address_range(target_t *target, u32 addr, u32 length);
 extern int flash_write(target_t *target, image_t *image, u32 *written, int erase);
 extern void flash_set_dirty(void);
 extern int flash_get_bank_count();
+int default_flash_blank_check(struct flash_bank_s *bank);
 
 extern flash_bank_t *get_flash_bank_by_num(int num);
 extern flash_bank_t *get_flash_bank_by_num_noprobe(int num);

src/flash/str7x.c

@@ -56,7 +56,6 @@ int str7x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
 int str7x_probe(struct flash_bank_s *bank);
 int str7x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int str7x_protect_check(struct flash_bank_s *bank);
-int str7x_erase_check(struct flash_bank_s *bank);
 int str7x_info(struct flash_bank_s *bank, char *buf, int buf_size);
 
 int str7x_handle_disable_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
@@ -71,7 +70,7 @@ flash_driver_t str7x_flash =
 	.write = str7x_write,
 	.probe = str7x_probe,
 	.auto_probe = str7x_probe,
-	.erase_check = str7x_erase_check,
+	.erase_check = default_flash_blank_check,
 	.protect_check = str7x_protect_check,
 	.info = str7x_info
 };
@@ -240,43 +239,6 @@ u32 str7x_result(struct flash_bank_s *bank)
 	return retval;
 }
 
-int str7x_blank_check(struct flash_bank_s *bank, int first, int last)
-{
-	target_t *target = bank->target;
-	u8 *buffer;
-	int i;
-	int nBytes;
-	
-	if ((first < 0) || (last > bank->num_sectors))
-		return ERROR_FLASH_SECTOR_INVALID;
-
-	if (bank->target->state != TARGET_HALTED)
-	{
-		return ERROR_TARGET_NOT_HALTED;
-	}
-	
-	buffer = malloc(256);
-	
-	for (i = first; i <= last; i++)
-	{
-		bank->sectors[i].is_erased = 1;
-
-		target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, 256/4, buffer);
-		
-		for (nBytes = 0; nBytes < 256; nBytes++)
-		{
-			if (buffer[nBytes] != 0xFF)
-			{
-				bank->sectors[i].is_erased = 0;
-				break;
-			}
-		}	
-	}
-	
-	free(buffer);
-
-	return ERROR_OK;
-}
 
 int str7x_protect_check(struct flash_bank_s *bank)
 {
@@ -729,11 +691,6 @@ int str7x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, c
 	return ERROR_OK;
 }
 
-int str7x_erase_check(struct flash_bank_s *bank)
-{
-	return str7x_blank_check(bank, 0, bank->num_sectors - 1);
-}
-
 int str7x_info(struct flash_bank_s *bank, char *buf, int buf_size)
 {
 	snprintf(buf, buf_size, "str7x flash driver info" );

src/flash/str9x.c

@@ -64,7 +64,6 @@ int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
 int str9x_probe(struct flash_bank_s *bank);
 int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int str9x_protect_check(struct flash_bank_s *bank);
-int str9x_erase_check(struct flash_bank_s *bank);
 int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size);
 
 int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
@@ -79,7 +78,7 @@ flash_driver_t str9x_flash =
 	.write = str9x_write,
 	.probe = str9x_probe,
 	.auto_probe = str9x_probe,
-	.erase_check = str9x_erase_check,
+	.erase_check = default_flash_blank_check,
 	.protect_check = str9x_protect_check,
 	.info = str9x_info
 };
@@ -170,44 +169,6 @@ int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char
 	return ERROR_OK;
 }
 
-int str9x_blank_check(struct flash_bank_s *bank, int first, int last)
-{
-	target_t *target = bank->target;
-	u8 *buffer;
-	int i;
-	int nBytes;
-	
-	if ((first < 0) || (last > bank->num_sectors))
-		return ERROR_FLASH_SECTOR_INVALID;
-
-	if (bank->target->state != TARGET_HALTED)
-	{
-		return ERROR_TARGET_NOT_HALTED;
-	}
-	
-	buffer = malloc(256);
-	
-	for (i = first; i <= last; i++)
-	{
-		bank->sectors[i].is_erased = 1;
-
-		target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, 256/4, buffer);
-		
-		for (nBytes = 0; nBytes < 256; nBytes++)
-		{
-			if (buffer[nBytes] != 0xFF)
-			{
-				bank->sectors[i].is_erased = 0;
-				break;
-			}
-		}	
-	}
-	
-	free(buffer);
-
-	return ERROR_OK;
-}
-
 int str9x_protect_check(struct flash_bank_s *bank)
 {
 	str9x_flash_bank_t *str9x_info = bank->driver_priv;
@@ -581,11 +542,6 @@ int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, c
 	return ERROR_OK;
 }
 
-int str9x_erase_check(struct flash_bank_s *bank)
-{
-	return str9x_blank_check(bank, 0, bank->num_sectors - 1);
-}
-
 int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size)
 {
 	snprintf(buf, buf_size, "str9x flash driver info" );