X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fflash%2Fflash.c;h=46606d2de28fe57f871d6a58be9006bb52616b30;hp=1c6773dbbcbdb93ac5f61e1088b676974d8cd7e5;hb=69df712d1d06b2c698bed3de086b9f734de73b7e;hpb=f14f84ca1e5d4fbab00c52100859af5ec8226753

diff --git a/src/flash/flash.c b/src/flash/flash.c
index 1c6773dbbc..03d4547d40 100644
--- a/src/flash/flash.c
+++ b/src/flash/flash.c
@@ -2,6 +2,12 @@
  *   Copyright (C) 2005 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
  *                                                                         *
+ *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
+ *   Copyright (C) 2008 by Spencer Oliver                                  *
+ *   spen@spen-soft.co.uk                                                  *
+ *                                                                         *
  *   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     *
@@ -22,152 +28,134 @@
 #endif
 
 #include "flash.h"
-#include "command.h"
-#include "target.h"
-#include "time_support.h"
-#include "fileio.h"
 #include "image.h"
-#include "log.h"
-
-#include <string.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <inttypes.h>
-
-/* command handlers */
-int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr);
+#include "time_support.h"
+
+static int flash_write_unlock(struct target *target, struct image *image, uint32_t *written, int erase, bool unlock);
 
 /* flash drivers
  */
-extern flash_driver_t lpc2000_flash;
-extern flash_driver_t cfi_flash;
-extern flash_driver_t at91sam7_flash;
-extern flash_driver_t str7x_flash;
-extern flash_driver_t str9x_flash;
-extern flash_driver_t stellaris_flash;
-extern flash_driver_t str9xpec_flash;
-extern flash_driver_t stm32x_flash;
-extern flash_driver_t tms470_flash;
-extern flash_driver_t ecosflash_flash;
-
-flash_driver_t *flash_drivers[] =
-{
+extern struct flash_driver lpc2000_flash;
+extern struct flash_driver lpc288x_flash;
+extern struct flash_driver lpc2900_flash;
+extern struct flash_driver cfi_flash;
+extern struct flash_driver at91sam3_flash;
+extern struct flash_driver at91sam7_flash;
+extern struct flash_driver str7x_flash;
+extern struct flash_driver str9x_flash;
+extern struct flash_driver aduc702x_flash;
+extern struct flash_driver stellaris_flash;
+extern struct flash_driver str9xpec_flash;
+extern struct flash_driver stm32x_flash;
+extern struct flash_driver tms470_flash;
+extern struct flash_driver ecosflash_flash;
+extern struct flash_driver ocl_flash;
+extern struct flash_driver pic32mx_flash;
+extern struct flash_driver avr_flash;
+extern struct flash_driver faux_flash;
+
+struct flash_driver *flash_drivers[] = {
 	&lpc2000_flash,
+	&lpc288x_flash,
+	&lpc2900_flash,
 	&cfi_flash,
 	&at91sam7_flash,
+	&at91sam3_flash,
 	&str7x_flash,
 	&str9x_flash,
+	&aduc702x_flash,
 	&stellaris_flash,
 	&str9xpec_flash,
 	&stm32x_flash,
 	&tms470_flash,
 	&ecosflash_flash,
+	&ocl_flash,
+	&pic32mx_flash,
+	&avr_flash,
+	&faux_flash,
 	NULL,
 };
 
-flash_bank_t *flash_banks;
-static 	command_t *flash_cmd;
-static int auto_erase = 0;
+struct flash_bank *flash_banks;
+static 	struct command *flash_cmd;
 
 /* wafer thin wrapper for invoking the flash driver */
-static int flash_driver_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+static int flash_driver_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 {
 	int retval;
 
-	retval=bank->driver->write(bank, buffer, offset, count);
-	if (retval!=ERROR_OK)
+	retval = bank->driver->write(bank, buffer, offset, count);
+	if (retval != ERROR_OK)
 	{
-		ERROR("error writing to flash at address 0x%08x at offset 0x%8.8x (%d)", bank->base, offset, retval);
+		LOG_ERROR("error writing to flash at address 0x%08" PRIx32 " at offset 0x%8.8" PRIx32 " (%d)",
+			  bank->base, offset, retval);
 	}
 
 	return retval;
 }
 
-static int flash_driver_erase(struct flash_bank_s *bank, int first, int last)
+static int flash_driver_erase(struct flash_bank *bank, int first, int last)
 {
 	int retval;
 
-	retval=bank->driver->erase(bank, first, last);
-	if (retval!=ERROR_OK)
+	retval = bank->driver->erase(bank, first, last);
+	if (retval != ERROR_OK)
 	{
-		ERROR("failed erasing sectors %d to %d (%d)", first, last, retval);
+		LOG_ERROR("failed erasing sectors %d to %d (%d)", first, last, retval);
 	}
 
 	return retval;
 }
 
-int flash_driver_protect(struct flash_bank_s *bank, int set, int first, int last)
+int flash_driver_protect(struct flash_bank *bank, int set, int first, int last)
 {
 	int retval;
 
-	retval=bank->driver->protect(bank, set, first, last);
-	if (retval!=ERROR_OK)
+	retval = bank->driver->protect(bank, set, first, last);
+	if (retval != ERROR_OK)
 	{
-		ERROR("failed setting protection for areas %d to %d (%d)", first, last, retval);
+		LOG_ERROR("failed setting protection for areas %d to %d (%d)", first, last, retval);
 	}
 
 	return retval;
 }
 
-
-int flash_register_commands(struct command_context_s *cmd_ctx)
+static int jim_flash_banks(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
-	flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
+	struct flash_bank *p;
 
-	register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, "flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]");
-	register_command(cmd_ctx, flash_cmd, "auto_erase", handle_flash_auto_erase_command, COMMAND_ANY,
-						 "auto erase flash sectors <on|off>");
-	return ERROR_OK;
-}
+	if (argc != 1) {
+		Jim_WrongNumArgs(interp, 1, argv, "no arguments to flash_banks command");
+		return JIM_ERR;
+	}
 
-int flash_init_drivers(struct command_context_s *cmd_ctx)
-{
-	if (flash_banks)
-	{
-		register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
-						 "list configured flash banks ");
-		register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
-						 "print info about flash bank <num>");
-		register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
-						 "identify flash bank <num>");
-		register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
-						 "check erase state of sectors in flash bank <num>");
-		register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
-						 "check protection state of sectors in flash bank <num>");
-		register_command(cmd_ctx, flash_cmd, "erase_sector", handle_flash_erase_command, COMMAND_EXEC,
-						 "erase sectors at <bank> <first> <last>");
-		register_command(cmd_ctx, flash_cmd, "erase_address", handle_flash_erase_address_command, COMMAND_EXEC,
-						 "erase address range <address> <length>");
-		register_command(cmd_ctx, flash_cmd, "write_bank", handle_flash_write_bank_command, COMMAND_EXEC,
-						 "write binary data to <bank> <file> <offset>");
-		register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
-						 "write_image <file> [offset] [type]");
-		register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
-						 "set protection of sectors at <bank> <first> <last> <on|off>");
+	Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
+	for (p = flash_banks; p; p = p->next)
+	{
+		Jim_Obj *elem = Jim_NewListObj(interp, NULL, 0);
+
+		Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "name", -1));
+		Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, p->driver->name, -1));
+		Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "base", -1));
+		Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->base));
+		Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "size", -1));
+		Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->size));
+		Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "bus_width", -1));
+		Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->bus_width));
+		Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "chip_width", -1));
+		Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->chip_width));
+
+		Jim_ListAppendElement(interp, list, elem);
 	}
 
-	return ERROR_OK;
+	Jim_SetResult(interp, list);
+
+	return JIM_OK;
 }
 
-flash_bank_t *get_flash_bank_by_num_noprobe(int num)
+struct flash_bank *get_flash_bank_by_num_noprobe(int num)
 {
-	flash_bank_t *p;
+	struct flash_bank *p;
 	int i = 0;
 
 	for (p = flash_banks; p; p = p->next)
@@ -177,13 +165,13 @@ flash_bank_t *get_flash_bank_by_num_noprobe(int num)
 			return p;
 		}
 	}
-	ERROR("flash bank %d does not exist", num);
+	LOG_ERROR("flash bank %d does not exist", num);
 	return NULL;
 }
 
-int flash_get_bank_count()
+int flash_get_bank_count(void)
 {
-	flash_bank_t *p;
+	struct flash_bank *p;
 	int i = 0;
 	for (p = flash_banks; p; p = p->next)
 	{
@@ -192,9 +180,9 @@ int flash_get_bank_count()
 	return i;
 }
 
-flash_bank_t *get_flash_bank_by_num(int num)
+struct flash_bank *get_flash_bank_by_num(int num)
 {
-	flash_bank_t *p = get_flash_bank_by_num_noprobe(num);
+	struct flash_bank *p = get_flash_bank_by_num_noprobe(num);
 	int retval;
 
 	if (p == NULL)
@@ -204,168 +192,174 @@ flash_bank_t *get_flash_bank_by_num(int num)
 
 	if (retval != ERROR_OK)
 	{
-		ERROR("auto_probe failed %d\n", retval);
+		LOG_ERROR("auto_probe failed %d\n", retval);
 		return NULL;
 	}
 	return p;
 }
 
-int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HELPER(flash_command_get_bank_by_num,
+	unsigned name_index, struct flash_bank **bank)
+{
+	unsigned bank_num;
+	COMMAND_PARSE_NUMBER(uint, args[name_index], bank_num);
+
+	*bank = get_flash_bank_by_num(bank_num);
+	if (!*bank)
+	{
+		command_print(cmd_ctx,
+			"flash bank '#%u' not found", bank_num);
+		return ERROR_INVALID_ARGUMENTS;
+	}
+	return ERROR_OK;
+}
+
+
+COMMAND_HANDLER(handle_flash_bank_command)
 {
+	int retval;
 	int i;
 	int found = 0;
-	target_t *target;
+	struct target *target;
 
 	if (argc < 6)
 	{
 		return ERROR_COMMAND_SYNTAX_ERROR;
 	}
 
-	if ((target = get_target_by_num(strtoul(args[5], NULL, 0))) == NULL)
+	if ((target = get_target(args[5])) == NULL)
 	{
-		ERROR("target %lu not defined", strtoul(args[5], NULL, 0));
-		return ERROR_OK;
+		LOG_ERROR("target '%s' not defined", args[5]);
+		return ERROR_FAIL;
 	}
 
 	for (i = 0; flash_drivers[i]; i++)
 	{
-		if (strcmp(args[0], flash_drivers[i]->name) == 0)
-		{
-			flash_bank_t *p, *c;
+		if (strcmp(args[0], flash_drivers[i]->name) != 0)
+			continue;
 
-			/* register flash specific commands */
-			if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
-			{
-				ERROR("couldn't register '%s' commands", args[0]);
-				exit(-1);
-			}
+		struct flash_bank *p, *c;
 
-			c = malloc(sizeof(flash_bank_t));
-			c->target = target;
-			c->driver = flash_drivers[i];
-			c->driver_priv = NULL;
-			c->base = strtoul(args[1], NULL, 0);
-			c->size = strtoul(args[2], NULL, 0);
-			c->chip_width = strtoul(args[3], NULL, 0);
-			c->bus_width = strtoul(args[4], NULL, 0);
-			c->num_sectors = 0;
-			c->sectors = NULL;
-			c->next = NULL;
-
-			if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
-			{
-				ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
-				free(c);
-				return ERROR_OK;
-			}
+		/* register flash specific commands */
+		if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
+		{
+			LOG_ERROR("couldn't register '%s' commands", args[0]);
+			return ERROR_FAIL;
+		}
 
-			/* put flash bank in linked list */
-			if (flash_banks)
-			{
-				/* find last flash bank */
-				for (p = flash_banks; p && p->next; p = p->next);
-				if (p)
-					p->next = c;
-			}
-			else
-			{
-				flash_banks = c;
-			}
+		c = malloc(sizeof(struct flash_bank));
+		c->target = target;
+		c->driver = flash_drivers[i];
+		c->driver_priv = NULL;
+		COMMAND_PARSE_NUMBER(u32, args[1], c->base);
+		COMMAND_PARSE_NUMBER(u32, args[2], c->size);
+		COMMAND_PARSE_NUMBER(int, args[3], c->chip_width);
+		COMMAND_PARSE_NUMBER(int, args[4], c->bus_width);
+		c->num_sectors = 0;
+		c->sectors = NULL;
+		c->next = NULL;
+
+		retval = CALL_COMMAND_HANDLER(flash_drivers[i]->flash_bank_command, c);
+		if (ERROR_OK != retval)
+		{
+			LOG_ERROR("'%s' driver rejected flash bank at 0x%8.8" PRIx32 , args[0], c->base);
+			free(c);
+			return retval;
+		}
 
-			found = 1;
+		/* put flash bank in linked list */
+		if (flash_banks)
+		{
+			int	bank_num = 0;
+			/* find last flash bank */
+			for (p = flash_banks; p && p->next; p = p->next) bank_num++;
+			if (p)
+				p->next = c;
+			c->bank_number = bank_num + 1;
 		}
+		else
+		{
+			flash_banks = c;
+			c->bank_number = 0;
+		}
+
+		found = 1;
 	}
 
 	/* no matching flash driver found */
 	if (!found)
 	{
-		ERROR("flash driver '%s' not found", args[0]);
-		exit(-1);
-	}
-
-	return ERROR_OK;
-}
-
-int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
-{
-	flash_bank_t *p;
-	int i = 0;
-
-	if (!flash_banks)
-	{
-		command_print(cmd_ctx, "no flash banks configured");
-		return ERROR_OK;
-	}
-
-	for (p = flash_banks; p; p = p->next)
-	{
-		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);
+		LOG_ERROR("flash driver '%s' not found", args[0]);
+		return ERROR_FAIL;
 	}
 
 	return ERROR_OK;
 }
 
-int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_info_command)
 {
-	flash_bank_t *p;
-	int i = 0;
+	struct flash_bank *p;
+	uint32_t i = 0;
 	int j = 0;
 	int retval;
 
 	if (argc != 1)
-	{
 		return ERROR_COMMAND_SYNTAX_ERROR;
-	}
+
+	unsigned bank_nr;
+	COMMAND_PARSE_NUMBER(uint, args[0], bank_nr);
 
 	for (p = flash_banks; p; p = p->next, i++)
 	{
-		if (i == strtoul(args[0], NULL, 0))
-		{
-			char buf[1024];
-
-			/* attempt auto probe */
-			p->driver->auto_probe(p);
+		if (i != bank_nr)
+			continue;
 
-			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);
-			for (j = 0; j < p->num_sectors; j++)
-			{
-				char *erase_state, *protect_state;
-
-				if (p->sectors[j].is_erased == 0)
-					erase_state = "not erased";
-				else if (p->sectors[j].is_erased == 1)
-					erase_state = "erased";
-				else
-					erase_state = "erase state unknown";
-
-				if (p->sectors[j].is_protected == 0)
-					protect_state = "not protected";
-				else if (p->sectors[j].is_protected == 1)
-					protect_state = "protected";
-				else
-					protect_state = "protection state unknown";
-
-				command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s, %s",
-							j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
-							erase_state, protect_state);
-			}
+		char buf[1024];
+
+		/* attempt auto probe */
+		if ((retval = p->driver->auto_probe(p)) != ERROR_OK)
+			return retval;
+
+		command_print(cmd_ctx,
+			      "#%" PRIi32 " : %s at 0x%8.8" PRIx32 ", size 0x%8.8" PRIx32 ", buswidth %i, chipwidth %i",
+			      i,
+			      p->driver->name,
+			      p->base,
+			      p->size,
+			      p->bus_width,
+			      p->chip_width);
+		for (j = 0; j < p->num_sectors; j++)
+		{
+			char *protect_state;
 
-			*buf = '\0'; /* initialize buffer, otherwise it migh contain garbage if driver function fails */
-			retval = p->driver->info(p, buf, sizeof(buf));
-			command_print(cmd_ctx, "%s", buf);
-			if (retval != ERROR_OK)
-				ERROR("error retrieving flash info (%d)", retval);
+			if (p->sectors[j].is_protected == 0)
+				protect_state = "not protected";
+			else if (p->sectors[j].is_protected == 1)
+				protect_state = "protected";
+			else
+				protect_state = "protection state unknown";
+
+			command_print(cmd_ctx,
+				      "\t#%3i: 0x%8.8" PRIx32 " (0x%" PRIx32 " %" PRIi32 "kB) %s",
+				      j,
+				      p->sectors[j].offset,
+				      p->sectors[j].size,
+				      p->sectors[j].size >> 10,
+				      protect_state);
 		}
+
+		*buf = '\0'; /* initialize buffer, otherwise it migh contain garbage if driver function fails */
+		retval = p->driver->info(p, buf, sizeof(buf));
+		command_print(cmd_ctx, "%s", buf);
+		if (retval != ERROR_OK)
+			LOG_ERROR("error retrieving flash info (%d)", retval);
 	}
 
 	return ERROR_OK;
 }
 
-int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_probe_command)
 {
-	flash_bank_t *p;
 	int retval;
 
 	if (argc != 1)
@@ -373,21 +367,23 @@ int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, cha
 		return ERROR_COMMAND_SYNTAX_ERROR;
 	}
 
-	p = get_flash_bank_by_num_noprobe(strtoul(args[0], NULL, 0));
+	unsigned bank_nr;
+	COMMAND_PARSE_NUMBER(uint, args[0], bank_nr);
+	struct flash_bank *p = get_flash_bank_by_num_noprobe(bank_nr);
 	if (p)
 	{
 		if ((retval = p->driver->probe(p)) == ERROR_OK)
 		{
-			command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
+			command_print(cmd_ctx, "flash '%s' found at 0x%8.8" PRIx32, p->driver->name, p->base);
 		}
 		else if (retval == ERROR_FLASH_BANK_INVALID)
 		{
-			command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
+			command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8" PRIx32,
 						  args[0], p->base);
 		}
 		else
 		{
-			command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
+			command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8" PRIx32,
 						  args[0], p->base);
 		}
 	}
@@ -399,51 +395,66 @@ int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, cha
 	return ERROR_OK;
 }
 
-int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_erase_check_command)
 {
-	flash_bank_t *p;
-	int retval;
-
 	if (argc != 1)
 	{
 		return ERROR_COMMAND_SYNTAX_ERROR;
 	}
 
-	p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
-	if (p)
+	struct flash_bank *p;
+	int retval = CALL_COMMAND_HANDLER(flash_command_get_bank_by_num, 0, &p);
+	if (ERROR_OK != retval)
+		return retval;
+
+	int j;
+	if ((retval = p->driver->erase_check(p)) == ERROR_OK)
 	{
-		if ((retval = p->driver->erase_check(p)) == ERROR_OK)
-		{
-			command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
-		}
+		command_print(cmd_ctx, "successfully checked erase state");
+	}
+	else
+	{
+		command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8" PRIx32,
+			args[0], p->base);
+	}
+
+	for (j = 0; j < p->num_sectors; j++)
+	{
+		char *erase_state;
+
+		if (p->sectors[j].is_erased == 0)
+			erase_state = "not erased";
+		else if (p->sectors[j].is_erased == 1)
+			erase_state = "erased";
 		else
-		{
-			command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
-				args[0], p->base);
-		}
+			erase_state = "erase state unknown";
+
+		command_print(cmd_ctx,
+			      "\t#%3i: 0x%8.8" PRIx32 " (0x%" PRIx32 " %" PRIi32 "kB) %s",
+			      j,
+			      p->sectors[j].offset,
+			      p->sectors[j].size,
+			      p->sectors[j].size >> 10,
+			      erase_state);
 	}
 
 	return ERROR_OK;
 }
 
-int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_erase_address_command)
 {
-	flash_bank_t *p;
+	struct flash_bank *p;
 	int retval;
 	int address;
 	int length;
-	duration_t duration;
-	char *duration_text;
 
-	target_t *target = get_current_target(cmd_ctx);
+	struct target *target = get_current_target(cmd_ctx);
 
 	if (argc != 2)
-	{
 		return ERROR_COMMAND_SYNTAX_ERROR;
-	}
 
-	address = strtoul(args[0], NULL, 0);
-	length = strtoul(args[1], NULL, 0);
+	COMMAND_PARSE_NUMBER(int, args[0], address);
+	COMMAND_PARSE_NUMBER(int, args[1], length);
 	if (length <= 0)
 	{
 		command_print(cmd_ctx, "Length must be >0");
@@ -453,161 +464,211 @@ int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *
 	p = get_flash_bank_by_addr(target, address);
 	if (p == NULL)
 	{
-		return ERROR_COMMAND_SYNTAX_ERROR;
+		return ERROR_FAIL;
 	}
 
 	/* We can't know if we did a resume + halt, in which case we no longer know the erased state */
 	flash_set_dirty();
 
-	duration_start_measure(&duration);
+	struct duration bench;
+	duration_start(&bench);
+
+	retval = flash_erase_address_range(target, address, length);
 
-	if ((retval = flash_erase_address_range(target, address, length)) == ERROR_OK)
+	if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 	{
-		duration_stop_measure(&duration, &duration_text);
-		command_print(cmd_ctx, "erased address 0x%8.8x length %i in %s", address, length, duration_text);
-		free(duration_text);
+		command_print(cmd_ctx, "erased address 0x%8.8x (length %i)"
+				" in %fs (%0.3f kb/s)", address, length,
+				duration_elapsed(&bench), duration_kbps(&bench, length));
 	}
 
 	return retval;
 }
 
-int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_protect_check_command)
 {
-	flash_bank_t *p;
-	int retval;
-
 	if (argc != 1)
-	{
 		return ERROR_COMMAND_SYNTAX_ERROR;
-	}
 
-	p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
-	if (p)
+	struct flash_bank *p;
+	int retval = CALL_COMMAND_HANDLER(flash_command_get_bank_by_num, 0, &p);
+	if (ERROR_OK != retval)
+		return retval;
+
+	if ((retval = p->driver->protect_check(p)) == ERROR_OK)
 	{
-		if ((retval = p->driver->protect_check(p)) == ERROR_OK)
-		{
-			command_print(cmd_ctx, "successfully checked protect state");
-		}
-		else if (retval == ERROR_FLASH_OPERATION_FAILED)
-		{
-			command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
-		}
-		else
-		{
-			command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
-		}
+		command_print(cmd_ctx, "successfully checked protect state");
+	}
+	else if (retval == ERROR_FLASH_OPERATION_FAILED)
+	{
+		command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8" PRIx32, args[0], p->base);
 	}
 	else
 	{
-		return ERROR_COMMAND_SYNTAX_ERROR;
+		command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8" PRIx32, args[0], p->base);
 	}
 
 	return ERROR_OK;
 }
 
-int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int flash_check_sector_parameters(struct command_context *cmd_ctx,
+		uint32_t first, uint32_t last, uint32_t num_sectors)
 {
-	if (argc > 2)
-	{
-		int first = strtoul(args[1], NULL, 0);
-		int last = strtoul(args[2], NULL, 0);
-		int retval;
-		flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
-		duration_t duration;
-		char *duration_text;
+	if (!(first <= last)) {
+		command_print(cmd_ctx, "ERROR: "
+				"first sector must be <= last sector");
+		return ERROR_FAIL;
+	}
 
-		duration_start_measure(&duration);
+	if (!(last <= (num_sectors - 1))) {
+		command_print(cmd_ctx, "ERROR: last sector must be <= %d",
+				(int) num_sectors - 1);
+		return ERROR_FAIL;
+	}
 
-		if (!p)
-		{
-			return ERROR_COMMAND_SYNTAX_ERROR;
-		}
+	return ERROR_OK;
+}
 
-		if ((retval = flash_driver_erase(p, first, last)) == ERROR_OK)
-		{
-			duration_stop_measure(&duration, &duration_text);
+COMMAND_HANDLER(handle_flash_erase_command)
+{
+	if (argc != 2)
+		return ERROR_COMMAND_SYNTAX_ERROR;
 
-			command_print(cmd_ctx, "erased sectors %i through %i on flash bank %i in %s", first, last, strtoul(args[0], 0, 0), duration_text);
-			free(duration_text);
-		}
-	}
+	uint32_t bank_nr;
+	uint32_t first;
+	uint32_t last;
+
+	COMMAND_PARSE_NUMBER(u32, args[0], bank_nr);
+	struct flash_bank *p = get_flash_bank_by_num(bank_nr);
+	if (!p)
+		return ERROR_OK;
+
+	COMMAND_PARSE_NUMBER(u32, args[1], first);
+	if (strcmp(args[2], "last") == 0)
+		last = p->num_sectors - 1;
 	else
+		COMMAND_PARSE_NUMBER(u32, args[2], last);
+
+	int retval;
+	if ((retval = flash_check_sector_parameters(cmd_ctx,
+			first, last, p->num_sectors)) != ERROR_OK)
+		return retval;
+
+	struct duration bench;
+	duration_start(&bench);
+
+	retval = flash_driver_erase(p, first, last);
+
+	if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 	{
-		return ERROR_COMMAND_SYNTAX_ERROR;
+		command_print(cmd_ctx, "erased sectors %" PRIu32 " "
+				"through %" PRIu32" on flash bank %" PRIu32 " "
+				"in %fs", first, last, bank_nr, duration_elapsed(&bench));
 	}
 
 	return ERROR_OK;
 }
 
-int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_protect_command)
 {
-	if (argc > 3)
-	{
-		int first = strtoul(args[1], NULL, 0);
-		int last = strtoul(args[2], NULL, 0);
-		int set;
-		int retval;
-		flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
-		if (!p)
-		{
-			command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
-			return ERROR_OK;
-		}
+	if (argc != 3)
+		return ERROR_COMMAND_SYNTAX_ERROR;
 
-		if (strcmp(args[3], "on") == 0)
-			set = 1;
-		else if (strcmp(args[3], "off") == 0)
-			set = 0;
-		else
-		{
-			return ERROR_COMMAND_SYNTAX_ERROR;
-		}
+	uint32_t bank_nr;
+	uint32_t first;
+	uint32_t last;
+	int set;
 
-		retval = flash_driver_protect(p, set, first, last);
-		if (retval == ERROR_OK)
-		{
-			command_print(cmd_ctx, "%s protection for sectors %i through %i on flash bank %i", (set) ? "set" : "cleared", first, last, strtoul(args[0], 0, 0));
-		}
-	}
+	COMMAND_PARSE_NUMBER(u32, args[0], bank_nr);
+	struct flash_bank *p = get_flash_bank_by_num(bank_nr);
+	if (!p)
+		return ERROR_OK;
+
+	COMMAND_PARSE_NUMBER(u32, args[1], first);
+	if (strcmp(args[2], "last") == 0)
+		last = p->num_sectors - 1;
+	else
+		COMMAND_PARSE_NUMBER(u32, args[2], last);
+
+	if (strcmp(args[3], "on") == 0)
+		set = 1;
+	else if (strcmp(args[3], "off") == 0)
+		set = 0;
 	else
-	{
 		return ERROR_COMMAND_SYNTAX_ERROR;
 
+	int retval;
+	if ((retval = flash_check_sector_parameters(cmd_ctx,
+			first, last, p->num_sectors)) != ERROR_OK)
+		return retval;
+
+	retval = flash_driver_protect(p, set, first, last);
+	if (retval == ERROR_OK) {
+		command_print(cmd_ctx, "%s protection for sectors %i "
+				"through %i on flash bank %i",
+			(set) ? "set" : "cleared", (int) first,
+			(int) last, (int) bank_nr);
 	}
 
 	return ERROR_OK;
 }
 
-int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_write_image_command)
 {
-	target_t *target = get_current_target(cmd_ctx);
+	struct target *target = get_current_target(cmd_ctx);
 
-	image_t image;
-	u32 written;
-
-	duration_t duration;
-	char *duration_text;
+	struct image image;
+	uint32_t written;
 
 	int retval;
 
 	if (argc < 1)
 	{
 		return ERROR_COMMAND_SYNTAX_ERROR;
+	}
+
+	/* flash auto-erase is disabled by default*/
+	int auto_erase = 0;
+	bool auto_unlock = false;
+
+	for (;;)
+	{
+		if (strcmp(args[0], "erase") == 0)
+		{
+			auto_erase = 1;
+			args++;
+			argc--;
+			command_print(cmd_ctx, "auto erase enabled");
+		} else if (strcmp(args[0], "unlock") == 0)
+		{
+			auto_unlock = true;
+			args++;
+			argc--;
+			command_print(cmd_ctx, "auto unlock enabled");
+		} else
+		{
+			break;
+		}
+	}
 
+	if (argc < 1)
+	{
+		return ERROR_COMMAND_SYNTAX_ERROR;
 	}
 
 	if (!target)
 	{
-		ERROR("no target selected");
-		return ERROR_OK;
+		LOG_ERROR("no target selected");
+		return ERROR_FAIL;
 	}
 
-	duration_start_measure(&duration);
+	struct duration bench;
+	duration_start(&bench);
 
 	if (argc >= 2)
 	{
 		image.base_address_set = 1;
-		image.base_address = strtoul(args[1], NULL, 0);
+		COMMAND_PARSE_NUMBER(int, args[1], image.base_address);
 	}
 	else
 	{
@@ -623,57 +684,149 @@ int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cm
 		return retval;
 	}
 
-	retval = flash_write(target, &image, &written, auto_erase);
-
+	retval = flash_write_unlock(target, &image, &written, auto_erase, auto_unlock);
 	if (retval != ERROR_OK)
 	{
 		image_close(&image);
 		return retval;
 	}
 
-	duration_stop_measure(&duration, &duration_text);
-	if (retval == ERROR_OK)
+	if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 	{
-	command_print(cmd_ctx, "wrote %u byte from file %s in %s (%f kb/s)",
-		written, args[0], duration_text,
-		(float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
+		command_print(cmd_ctx, "wrote %" PRIu32 " byte from file %s "
+				"in %fs (%0.3f kb/s)", written, args[0],
+				duration_elapsed(&bench), duration_kbps(&bench, written));
 	}
-	free(duration_text);
 
 	image_close(&image);
 
 	return retval;
 }
 
-int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_flash_fill_command)
 {
-	u32 offset;
-	u8 *buffer;
-	u32 buf_cnt;
+	int err = ERROR_OK;
+	uint32_t address;
+	uint32_t pattern;
+	uint32_t count;
+	uint8_t chunk[1024];
+	uint8_t readback[1024];
+	uint32_t wrote = 0;
+	uint32_t cur_size = 0;
+	uint32_t chunk_count;
+	struct target *target = get_current_target(cmd_ctx);
+	uint32_t i;
+	uint32_t wordsize;
 
-	fileio_t fileio;
+	if (argc != 3)
+		return ERROR_COMMAND_SYNTAX_ERROR;
 
-	duration_t duration;
-	char *duration_text;
+	COMMAND_PARSE_NUMBER(u32, args[0], address);
+	COMMAND_PARSE_NUMBER(u32, args[1], pattern);
+	COMMAND_PARSE_NUMBER(u32, args[2], count);
 
-	int retval;
-	flash_bank_t *p;
+	if (count == 0)
+		return ERROR_OK;
 
-	if (argc != 3)
+	switch (CMD_NAME[4])
 	{
+	case 'w':
+		wordsize = 4;
+		break;
+	case 'h':
+		wordsize = 2;
+		break;
+	case 'b':
+		wordsize = 1;
+		break;
+	default:
 		return ERROR_COMMAND_SYNTAX_ERROR;
 	}
 
-	duration_start_measure(&duration);
+	chunk_count = MIN(count, (1024 / wordsize));
+	switch (wordsize)
+	{
+	case 4:
+		for (i = 0; i < chunk_count; i++)
+		{
+			target_buffer_set_u32(target, chunk + i * wordsize, pattern);
+		}
+		break;
+	case 2:
+		for (i = 0; i < chunk_count; i++)
+		{
+			target_buffer_set_u16(target, chunk + i * wordsize, pattern);
+		}
+		break;
+	case 1:
+		memset(chunk, pattern, chunk_count);
+		break;
+	default:
+		LOG_ERROR("BUG: can't happen");
+		exit(-1);
+	}
 
-	offset = strtoul(args[2], NULL, 0);
-	p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
-	if (!p)
+	struct duration bench;
+	duration_start(&bench);
+
+	for (wrote = 0; wrote < (count*wordsize); wrote += cur_size)
 	{
-		command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
-		return ERROR_OK;
+		cur_size = MIN((count*wordsize - wrote), sizeof(chunk));
+		struct flash_bank *bank;
+		bank = get_flash_bank_by_addr(target, address);
+		if (bank == NULL)
+		{
+			return ERROR_FAIL;
+		}
+		err = flash_driver_write(bank, chunk, address - bank->base + wrote, cur_size);
+		if (err != ERROR_OK)
+			return err;
+
+		err = target_read_buffer(target, address + wrote, cur_size, readback);
+		if (err != ERROR_OK)
+			return err;
+
+		unsigned i;
+		for (i = 0; i < cur_size; i++)
+		{
+			if (readback[i]!=chunk[i])
+			{
+				LOG_ERROR("Verfication error address 0x%08" PRIx32 ", read back 0x%02x, expected 0x%02x",
+						  address + wrote + i, readback[i], chunk[i]);
+				return ERROR_FAIL;
+			}
+		}
 	}
 
+	if (duration_measure(&bench) == ERROR_OK)
+	{
+		command_print(cmd_ctx, "wrote %" PRIu32 " bytes to 0x%8.8" PRIx32 
+				" in %fs (%0.3f kb/s)", wrote, address,
+				duration_elapsed(&bench), duration_kbps(&bench, wrote));
+	}
+	return ERROR_OK;
+}
+
+COMMAND_HANDLER(handle_flash_write_bank_command)
+{
+	uint32_t offset;
+	uint8_t *buffer;
+	uint32_t buf_cnt;
+	struct fileio fileio;
+
+	if (argc != 3)
+		return ERROR_COMMAND_SYNTAX_ERROR;
+
+	struct duration bench;
+	duration_start(&bench);
+
+	struct flash_bank *p;
+	int retval = CALL_COMMAND_HANDLER(flash_command_get_bank_by_num, 0, &p);
+	if (ERROR_OK != retval)
+		return retval;
+
+	COMMAND_PARSE_NUMBER(u32, args[2], offset);
+
 	if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
 	{
 		return ERROR_OK;
@@ -682,21 +835,23 @@ int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd
 	buffer = malloc(fileio.size);
 	if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
 	{
+		free(buffer);
+		fileio_close(&fileio);
 		return ERROR_OK;
 	}
 
 	retval = flash_driver_write(p, buffer, offset, buf_cnt);
 
 	free(buffer);
+	buffer = NULL;
 
-	duration_stop_measure(&duration, &duration_text);
-	if (retval!=ERROR_OK)
+	if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 	{
-	command_print(cmd_ctx, "wrote  %"PRIi64" byte from file %s to flash bank %i at offset 0x%8.8x in %s (%f kb/s)",
-		fileio.size, args[1], strtoul(args[0], NULL, 0), offset, duration_text,
-		(float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
+		command_print(cmd_ctx, "wrote %zu byte from file %s to flash bank %u"
+				" at offset 0x%8.8" PRIx32 " in %fs (%0.3f kb/s)",
+				fileio.size, args[1], p->bank_number, offset,
+				duration_elapsed(&bench), duration_kbps(&bench, fileio.size));
 	}
-	free(duration_text);
 
 	fileio_close(&fileio);
 
@@ -705,7 +860,7 @@ int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd
 
 void flash_set_dirty(void)
 {
-	flash_bank_t *c;
+	struct flash_bank *c;
 	int i;
 
 	/* set all flash to require erasing */
@@ -719,9 +874,9 @@ void flash_set_dirty(void)
 }
 
 /* lookup flash bank by address */
-flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
+struct flash_bank *get_flash_bank_by_addr(struct target *target, uint32_t addr)
 {
-	flash_bank_t *c;
+	struct flash_bank *c;
 
 	/* cycle through bank list */
 	for (c = flash_banks; c; c = c->next)
@@ -731,21 +886,22 @@ flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
 
 		if (retval != ERROR_OK)
 		{
-			ERROR("auto_probe failed %d\n", retval);
+			LOG_ERROR("auto_probe failed %d\n", retval);
 			return NULL;
 		}
 		/* check whether address belongs to this flash bank */
-		if ((addr >= c->base) && (addr < c->base + c->size) && target == c->target)
+		if ((addr >= c->base) && (addr <= c->base + (c->size - 1)) && target == c->target)
 			return c;
 	}
-	ERROR("No flash at address 0x%08x\n", addr);
+	LOG_ERROR("No flash at address 0x%08" PRIx32 "\n", addr);
 	return NULL;
 }
 
 /* erase given flash region, selects proper bank according to target and address */
-int flash_erase_address_range(target_t *target, u32 addr, u32 length)
+static int flash_iterate_address_range(struct target *target, uint32_t addr, uint32_t length,
+		int (*callback)(struct flash_bank *bank, int first, int last))
 {
-	flash_bank_t *c;
+	struct flash_bank *c;
 	int first = -1;
 	int last = -1;
 	int i;
@@ -754,7 +910,10 @@ int flash_erase_address_range(target_t *target, u32 addr, u32 length)
 		return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
 
 	if (c->size == 0 || c->num_sectors == 0)
+	{
+		LOG_ERROR("Bank is invalid");
 		return ERROR_FLASH_BANK_INVALID;
+	}
 
 	if (length == 0)
 	{
@@ -762,11 +921,11 @@ int flash_erase_address_range(target_t *target, u32 addr, u32 length)
 		if (addr != c->base)
 			return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 
-		return flash_driver_erase(c, 0, c->num_sectors - 1);
+		return callback(c, 0, c->num_sectors - 1);
 	}
 
 	/* check whether it fits */
-	if (addr + length > c->base + c->size)
+	if (addr + length - 1 > c->base + c->size - 1)
 		return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 
 	addr -= c->base;
@@ -782,20 +941,39 @@ int flash_erase_address_range(target_t *target, u32 addr, u32 length)
 		}
 	}
 
-	if( first == -1 || last == -1 )
+	if (first == -1 || last == -1)
 		return ERROR_OK;
 
-	return flash_driver_erase(c, first, last);
+	return callback(c, first, last);
+}
+
+
+
+int flash_erase_address_range(struct target *target, uint32_t addr, uint32_t length)
+{
+	return flash_iterate_address_range(target, addr, length, &flash_driver_erase);
+}
+
+static int flash_driver_unprotect(struct flash_bank *bank, int first, int last)
+{
+	return flash_driver_protect(bank, 0, first, last);
+}
+
+static int flash_unlock_address_range(struct target *target, uint32_t addr, uint32_t length)
+{
+	return flash_iterate_address_range(target, addr, length, &flash_driver_unprotect);
 }
 
+
 /* write (optional verify) an image to flash memory of the given target */
-int flash_write(target_t *target, image_t *image, u32 *written, int erase)
+static int flash_write_unlock(struct target *target, struct image *image, uint32_t *written, int erase, bool unlock)
 {
-	int retval;
+	int retval = ERROR_OK;
 
 	int section;
-	u32 section_offset;
-	flash_bank_t *c;
+	uint32_t section_offset;
+	struct flash_bank *c;
+	int *padding;
 
 	section = 0;
 	section_offset = 0;
@@ -811,19 +989,23 @@ int flash_write(target_t *target, image_t *image, u32 *written, int erase)
 		flash_set_dirty();
 	}
 
+	/* allocate padding array */
+	padding = malloc(image->num_sections * sizeof(padding));
+
 	/* loop until we reach end of the image */
 	while (section < image->num_sections)
 	{
-		u32 buffer_size;
-		u8 *buffer;
+		uint32_t buffer_size;
+		uint8_t *buffer;
 		int section_first;
 		int section_last;
-		u32 run_address = image->sections[section].base_address + section_offset;
-		u32 run_size = image->sections[section].size - section_offset;
+		uint32_t run_address = image->sections[section].base_address + section_offset;
+		uint32_t run_size = image->sections[section].size - section_offset;
+		int pad_bytes = 0;
 
 		if (image->sections[section].size ==  0)
 		{
-			WARNING("empty section %d", section);
+			LOG_WARNING("empty section %d", section);
 			section++;
 			section_offset = 0;
 			continue;
@@ -840,22 +1022,35 @@ int flash_write(target_t *target, image_t *image, u32 *written, int erase)
 		/* collect consecutive sections which fall into the same bank */
 		section_first = section;
 		section_last = section;
-		while ((run_address + run_size < c->base + c->size)
+		padding[section] = 0;
+		while ((run_address + run_size - 1 < c->base + c->size - 1)
 				&& (section_last + 1 < image->num_sections))
 		{
 			if (image->sections[section_last + 1].base_address < (run_address + run_size))
 			{
-				DEBUG("section %d out of order(very slightly surprising, but supported)", section_last + 1);
+				LOG_DEBUG("section %d out of order(very slightly surprising, but supported)", section_last + 1);
 				break;
 			}
-			if (image->sections[section_last + 1].base_address != (run_address + run_size))
+			/* if we have multiple sections within our image, flash programming could fail due to alignment issues
+			 * attempt to rebuild a consecutive buffer for the flash loader */
+			pad_bytes = (image->sections[section_last + 1].base_address) - (run_address + run_size);
+			if ((run_address + run_size + pad_bytes) > (c->base + c->size))
 				break;
+			padding[section_last] = pad_bytes;
 			run_size += image->sections[++section_last].size;
+			run_size += pad_bytes;
+			padding[section_last] = 0;
+
+			LOG_INFO("Padding image section %d with %d bytes", section_last-1, pad_bytes);
 		}
 
 		/* fit the run into bank constraints */
-		if (run_address + run_size > c->base + c->size)
+		if (run_address + run_size - 1 > c->base + c->size - 1)
+		{
+			LOG_WARNING("writing %d bytes only - as image section is %d bytes and bank is only %d bytes", \
+				    (int)(c->base + c->size - run_address), (int)(run_size), (int)(c->size));
 			run_size = c->base + c->size - run_address;
+		}
 
 		/* allocate buffer */
 		buffer = malloc(run_size);
@@ -864,21 +1059,24 @@ int flash_write(target_t *target, image_t *image, u32 *written, int erase)
 		/* read sections to the buffer */
 		while (buffer_size < run_size)
 		{
-			u32 size_read;
+			uint32_t size_read;
 
-			if (buffer_size - run_size <= image->sections[section].size - section_offset)
-				size_read = buffer_size - run_size;
-			else
-				size_read = image->sections[section].size - section_offset;
+			size_read = run_size - buffer_size;
+			if (size_read > image->sections[section].size - section_offset)
+			    size_read = image->sections[section].size - section_offset;
 
 			if ((retval = image_read_section(image, section, section_offset,
 					size_read, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
 			{
 				free(buffer);
-
+				free(padding);
 				return retval;
 			}
 
+			/* see if we need to pad the section */
+			while (padding[section]--)
+				 (buffer + buffer_size)[size_read++] = 0xff;
+
 			buffer_size += size_read;
 			section_offset += size_read;
 
@@ -891,10 +1089,17 @@ int flash_write(target_t *target, image_t *image, u32 *written, int erase)
 
 		retval = ERROR_OK;
 
-		if (erase)
+		if (unlock)
 		{
-			/* calculate and erase sectors */
-			retval = flash_erase_address_range( target, run_address, run_size );
+			retval = flash_unlock_address_range(target, run_address, run_size);
+		}
+		if (retval == ERROR_OK)
+		{
+			if (erase)
+			{
+				/* calculate and erase sectors */
+				retval = flash_erase_address_range(target, run_address, run_size);
+			}
 		}
 
 		if (retval == ERROR_OK)
@@ -907,29 +1112,169 @@ int flash_write(target_t *target, image_t *image, u32 *written, int erase)
 
 		if (retval != ERROR_OK)
 		{
-				return retval; /* abort operation */
-			}
+			free(padding);
+			return retval; /* abort operation */
+		}
 
 		if (written != NULL)
 			*written += run_size; /* add run size to total written counter */
 	}
 
+	free(padding);
+
+	return retval;
+}
+
+int flash_write(struct target *target, struct image *image, uint32_t *written, int erase)
+{
+	return flash_write_unlock(target, image, written, erase, false);
+}
+
+int default_flash_mem_blank_check(struct flash_bank *bank)
+{
+	struct target *target = bank->target;
+	uint8_t buffer[1024];
+	int buffer_size = sizeof(buffer);
+	int i;
+	uint32_t nBytes;
+
+	if (bank->target->state != TARGET_HALTED)
+	{
+		LOG_ERROR("Target not halted");
+		return ERROR_TARGET_NOT_HALTED;
+	}
+
+	for (i = 0; i < bank->num_sectors; i++)
+	{
+		uint32_t j;
+		bank->sectors[i].is_erased = 1;
+
+		for (j = 0; j < bank->sectors[i].size; j += buffer_size)
+		{
+			uint32_t chunk;
+			int retval;
+			chunk = buffer_size;
+			if (chunk > (j - bank->sectors[i].size))
+			{
+				chunk = (j - bank->sectors[i].size);
+			}
+
+			retval = target_read_memory(target, bank->base + bank->sectors[i].offset + j, 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;
 }
 
-int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+int default_flash_blank_check(struct flash_bank *bank)
 {
-	if (argc != 1)
+	struct target *target = bank->target;
+	int i;
+	int retval;
+	int fast_check = 0;
+	uint32_t blank;
+
+	if (bank->target->state != TARGET_HALTED)
 	{
-		return ERROR_COMMAND_SYNTAX_ERROR;
+		LOG_ERROR("Target not halted");
+		return ERROR_TARGET_NOT_HALTED;
 	}
 
-	if (strcmp(args[0], "on") == 0)
-		auto_erase = 1;
-	else if (strcmp(args[0], "off") == 0)
-		auto_erase = 0;
-	else
-		return ERROR_COMMAND_SYNTAX_ERROR;
+	for (i = 0; i < bank->num_sectors; i++)
+	{
+		uint32_t address = bank->base + bank->sectors[i].offset;
+		uint32_t size = bank->sectors[i].size;
+
+		if ((retval = target_blank_check_memory(target, address, size, &blank)) != ERROR_OK)
+		{
+			fast_check = 0;
+			break;
+		}
+		if (blank == 0xFF)
+			bank->sectors[i].is_erased = 1;
+		else
+			bank->sectors[i].is_erased = 0;
+		fast_check = 1;
+	}
+
+	if (!fast_check)
+	{
+		LOG_USER("Running slow fallback erase check - add working memory");
+		return default_flash_mem_blank_check(bank);
+	}
+
+	return ERROR_OK;
+}
+
+int flash_init_drivers(struct command_context *cmd_ctx)
+{
+	register_jim(cmd_ctx, "ocd_flash_banks",
+			jim_flash_banks, "return information about the flash banks");
+
+	if (!flash_banks)
+		return ERROR_OK;
+
+	register_command(cmd_ctx, flash_cmd, "info",
+			handle_flash_info_command, COMMAND_EXEC,
+			"print info about flash bank <num>");
+	register_command(cmd_ctx, flash_cmd, "probe",
+			handle_flash_probe_command, COMMAND_EXEC,
+			"identify flash bank <num>");
+	register_command(cmd_ctx, flash_cmd, "erase_check",
+			handle_flash_erase_check_command, COMMAND_EXEC,
+			"check erase state of sectors in flash bank <num>");
+	register_command(cmd_ctx, flash_cmd, "protect_check",
+			handle_flash_protect_check_command, COMMAND_EXEC,
+			"check protection state of sectors in flash bank <num>");
+	register_command(cmd_ctx, flash_cmd, "erase_sector",
+			handle_flash_erase_command, COMMAND_EXEC,
+			"erase sectors at <bank> <first> <last>");
+	register_command(cmd_ctx, flash_cmd, "erase_address",
+			handle_flash_erase_address_command, COMMAND_EXEC,
+			"erase address range <address> <length>");
+
+	register_command(cmd_ctx, flash_cmd, "fillw",
+			handle_flash_fill_command, COMMAND_EXEC,
+			"fill with pattern (no autoerase) <address> <word_pattern> <count>");
+	register_command(cmd_ctx, flash_cmd, "fillh",
+			handle_flash_fill_command, COMMAND_EXEC,
+			"fill with pattern <address> <halfword_pattern> <count>");
+	register_command(cmd_ctx, flash_cmd, "fillb",
+			handle_flash_fill_command, COMMAND_EXEC,
+			"fill with pattern <address> <byte_pattern> <count>");
+
+	register_command(cmd_ctx, flash_cmd, "write_bank",
+			handle_flash_write_bank_command, COMMAND_EXEC,
+			"write binary data to <bank> <file> <offset>");
+	register_command(cmd_ctx, flash_cmd, "write_image",
+			handle_flash_write_image_command, COMMAND_EXEC,
+			"write_image [erase] [unlock] <file> [offset] [type]");
+	register_command(cmd_ctx, flash_cmd, "protect",
+			handle_flash_protect_command, COMMAND_EXEC,
+			"set protection of sectors at <bank> <first> <last> <on | off>");
+
+	return ERROR_OK;
+}
+
+int flash_register_commands(struct command_context *cmd_ctx)
+{
+	flash_cmd = register_command(cmd_ctx, NULL, "flash",
+			NULL, COMMAND_ANY, NULL);
 
+	register_command(cmd_ctx, flash_cmd, "bank",
+			handle_flash_bank_command, COMMAND_CONFIG,
+			"flash bank <driver> <base> <size> "
+			"<chip_width> <bus_width> <target> [driver_options ...]");
 	return ERROR_OK;
 }