Remove whitespace at end of lines, step 1.
[fw/openocd] / src / flash / stellaris.c
index d8bd14e05f2474f8df4353cdf7abe34c983b16a7..3f629dee95fcc976207533700b5cf6c7f5b3e82e 100644 (file)
@@ -1,7 +1,10 @@
 /***************************************************************************
  *   Copyright (C) 2006 by Magnus Lundin                                   *
- *   lundin@mlu.mine.nu                                                       *
- *                                                                                                            *
+ *   lundin@mlu.mine.nu                                                    *
+ *                                                                         *
+ *   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     *
  ***************************************************************************/
 
 /***************************************************************************
-* STELLARIS is tested on LM3S811
-* 
-*
-*
- ***************************************************************************/
+* STELLARIS is tested on LM3S811, LM3S6965
+***************************************************************************/
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include "replacements.h"
-
 #include "stellaris.h"
-#include "cortex_m3.h"
-
-#include "flash.h"
-#include "target.h"
-#include "log.h"
+#include "armv7m.h"
 #include "binarybuffer.h"
-#include "types.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#define DID0_VER(did0) ((did0>>28)&0x07)
-int stellaris_register_commands(struct command_context_s *cmd_ctx);
-int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
-int stellaris_erase(struct flash_bank_s *bank, int first, int last);
-int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last);
-int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
-int stellaris_auto_probe(struct flash_bank_s *bank);
-int stellaris_probe(struct flash_bank_s *bank);
-int stellaris_erase_check(struct flash_bank_s *bank);
-int stellaris_protect_check(struct flash_bank_s *bank);
-int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size);
-
-int stellaris_read_part_info(struct flash_bank_s *bank);
-u32 stellaris_get_flash_status(flash_bank_t *bank);
-void stellaris_set_flash_mode(flash_bank_t *bank,int mode);
-u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout);
-
-int stellaris_read_part_info(struct flash_bank_s *bank);
+
+
+#define DID0_VER(did0) ((did0 >> 28)&0x07)
+static int stellaris_register_commands(struct command_context_s *cmd_ctx);
+static int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
+static int stellaris_erase(struct flash_bank_s *bank, int first, int last);
+static int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last);
+static int stellaris_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count);
+static int stellaris_auto_probe(struct flash_bank_s *bank);
+static int stellaris_probe(struct flash_bank_s *bank);
+static int stellaris_protect_check(struct flash_bank_s *bank);
+static int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size);
+
+static int stellaris_read_part_info(struct flash_bank_s *bank);
+static uint32_t stellaris_get_flash_status(flash_bank_t *bank);
+static void stellaris_set_flash_mode(flash_bank_t *bank,int mode);
+//static uint32_t stellaris_wait_status_busy(flash_bank_t *bank, uint32_t waitbits, int timeout);
+
+static int stellaris_handle_mass_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int stellaris_mass_erase(struct flash_bank_s *bank);
 
 flash_driver_t stellaris_flash =
 {
@@ -72,19 +62,23 @@ flash_driver_t stellaris_flash =
        .write = stellaris_write,
        .probe = stellaris_probe,
        .auto_probe = stellaris_auto_probe,
-       .erase_check = stellaris_erase_check,
+       .erase_check = default_flash_mem_blank_check,
        .protect_check = stellaris_protect_check,
        .info = stellaris_info
 };
 
-
-struct {
-       u32 partno;
-    char *partname;
+static struct {
+       uint32_t partno;
+       char *partname;
 }      StellarisParts[] =
 {
        {0x01,"LM3S101"},
        {0x02,"LM3S102"},
+       {0x03,"LM3S1625"},
+       {0x04,"LM3S1626"},
+       {0x05,"LM3S1627"},
+       {0x06,"LM3S1607"},
+       {0x10,"LM3S1776"},
        {0x19,"LM3S300"},
        {0x11,"LM3S301"},
        {0x12,"LM3S310"},
@@ -110,10 +104,20 @@ struct {
        {0x39,"LM3S808"},
        {0x32,"LM3S811"},
        {0x33,"LM3S812"},
+       /*{0x33,"LM3S2616"},*/
        {0x34,"LM3S815"},
        {0x36,"LM3S817"},
        {0x37,"LM3S818"},
        {0x35,"LM3S828"},
+       {0x39,"LM3S2276"},
+       {0x3A,"LM3S2776"},
+       {0x43,"LM3S3651"},
+       {0x44,"LM3S3739"},
+       {0x45,"LM3S3749"},
+       {0x46,"LM3S3759"},
+       {0x48,"LM3S3768"},
+       {0x49,"LM3S3748"},
+       {0x50,"LM3S2678"},
        {0x51,"LM3S2110"},
        {0x52,"LM3S2739"},
        {0x53,"LM3S2651"},
@@ -137,6 +141,8 @@ struct {
        {0x76,"LM3S6537"},
        {0x77,"LM3S6753"},
        {0x78,"LM3S6952"},
+       {0x80,"LM3S2671"},
+       {0x81,"LM3S5632"},
        {0x82,"LM3S6422"},
        {0x83,"LM3S6633"},
        {0x84,"LM3S2139"},
@@ -144,17 +150,30 @@ struct {
        {0x86,"LM3S8738"},
        {0x88,"LM3S8938"},
        {0x89,"LM3S6938"},
+       {0x8A,"LM3S5652"},
        {0x8B,"LM3S6637"},
        {0x8C,"LM3S8933"},
        {0x8D,"LM3S8733"},
        {0x8E,"LM3S8538"},
        {0x8F,"LM3S2948"},
+       {0x91,"LM3S5662"},
+       {0x96,"LM3S5732"},
+       {0x97,"LM3S5737"},
+       {0x99,"LM3S5747"},
+       {0x9A,"LM3S5752"},
+       {0x9B,"LM3S5757"},
+       {0x9C,"LM3S5762"},
+       {0x9D,"LM3S5767"},
+       {0xA0,"LM3S5739"},
        {0xA1,"LM3S6100"},
        {0xA2,"LM3S2410"},
        {0xA3,"LM3S6730"},
        {0xA4,"LM3S2730"},
        {0xA5,"LM3S6420"},
        {0xA6,"LM3S8962"},
+       {0xA7,"LM3S5749"},
+       {0xA8,"LM3S5769"},
+       {0xA9,"LM3S5768"},
        {0xB3,"LM3S1635"},
        {0xB4,"LM3S1850"},
        {0xB5,"LM3S1960"},
@@ -204,10 +223,13 @@ struct {
        {0,"Unknown part"}
 };
 
-char * StellarisClassname[2] =
+static char * StellarisClassname[5] =
 {
        "Sandstorm",
-       "Fury"
+       "Fury",
+       "Unknown",
+       "DustDevil",
+       "Tempest"
 };
 
 /***************************************************************************
@@ -216,44 +238,42 @@ char * StellarisClassname[2] =
 
 /* flash_bank stellaris <base> <size> 0 0 <target#>
  */
-int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
+static int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
 {
        stellaris_flash_bank_t *stellaris_info;
-       
+
        if (argc < 6)
        {
-               WARNING("incomplete flash_bank stellaris configuration");
+               LOG_WARNING("incomplete flash_bank stellaris configuration");
                return ERROR_FLASH_BANK_INVALID;
        }
-       
-       stellaris_info = calloc(sizeof(stellaris_flash_bank_t),1);
+
+       stellaris_info = calloc(sizeof(stellaris_flash_bank_t), 1);
        bank->base = 0x0;
        bank->driver_priv = stellaris_info;
-       
+
        stellaris_info->target_name = "Unknown target";
-       
+
        /* part wasn't probed for info yet */
        stellaris_info->did1 = 0;
-       
-       /* TODO Use an optional main oscillator clock rate in kHz from arg[6] */ 
+
+       /* TODO Use an optional main oscillator clock rate in kHz from arg[6] */
        return ERROR_OK;
 }
 
-int stellaris_register_commands(struct command_context_s *cmd_ctx)
+static int stellaris_register_commands(struct command_context_s *cmd_ctx)
 {
-/*
-       command_t *stellaris_cmd = register_command(cmd_ctx, NULL, "stellaris", NULL, COMMAND_ANY, NULL);
-       register_command(cmd_ctx, stellaris_cmd, "gpnvm", stellaris_handle_gpnvm_command, COMMAND_EXEC,
-                       "stellaris gpnvm <num> <bit> set|clear, set or clear stellaris gpnvm bit");
-*/
+       command_t *stm32x_cmd = register_command(cmd_ctx, NULL, "stellaris", NULL, COMMAND_ANY, "stellaris flash specific commands");
+
+       register_command(cmd_ctx, stm32x_cmd, "mass_erase", stellaris_handle_mass_erase_command, COMMAND_EXEC, "mass erase device");
        return ERROR_OK;
 }
 
-int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size)
+static int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size)
 {
        int printed, device_class;
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
-       
+
        stellaris_read_part_info(bank);
 
        if (stellaris_info->did1 == 0)
@@ -263,32 +283,54 @@ int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size)
                buf_size -= printed;
                return ERROR_FLASH_OPERATION_FAILED;
        }
-       
-       if (DID0_VER(stellaris_info->did0)>0)
+
+       if (DID0_VER(stellaris_info->did0) > 0)
        {
-               device_class = (stellaris_info->did0>>16)&0xFF;
+               device_class = (stellaris_info->did0 >> 16) & 0xFF;
        }
        else
        {
                device_class = 0;
-       }       
-    printed = snprintf(buf, buf_size, "\nLMI Stellaris information: Chip is class %i(%s) %s v%c.%i\n",
-         device_class, StellarisClassname[device_class], stellaris_info->target_name,
-         'A' + (stellaris_info->did0>>8)&0xFF, (stellaris_info->did0)&0xFF);
+       }
+       printed = snprintf(buf,
+                          buf_size,
+                          "\nLMI Stellaris information: Chip is class %i(%s) %s v%c.%i\n",
+                          device_class,
+                          StellarisClassname[device_class],
+                          stellaris_info->target_name,
+                          (int)('A' + ((stellaris_info->did0 >> 8) & 0xFF)),
+                          (int)((stellaris_info->did0) & 0xFF));
        buf += printed;
        buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "did1: 0x%8.8x, arch: 0x%4.4x, eproc: %s, ramsize:%ik,  flashsize: %ik\n", 
-        stellaris_info->did1, stellaris_info->did1, "ARMV7M", (1+(stellaris_info->dc0>>16)&0xFFFF)/4, (1+stellaris_info->dc0&0xFFFF)*2);
+       printed = snprintf(buf,
+                          buf_size,
+                          "did1: 0x%8.8" PRIx32 ", arch: 0x%4.4" PRIx32 ", eproc: %s, ramsize:%ik, flashsize: %ik\n",
+                          stellaris_info->did1,
+                          stellaris_info->did1,
+                          "ARMV7M",
+                          (int)((1 + ((stellaris_info->dc0 >> 16) & 0xFFFF))/4),
+                          (int)((1 + (stellaris_info->dc0 & 0xFFFF))*2));
        buf += printed;
        buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "master clock(estimated): %ikHz,  rcc is 0x%x \n", stellaris_info->mck_freq / 1000, stellaris_info->rcc);
+       printed = snprintf(buf,
+                          buf_size,
+                          "master clock(estimated): %ikHz, rcc is 0x%" PRIx32 " \n",
+                          (int)(stellaris_info->mck_freq / 1000),
+                          stellaris_info->rcc);
        buf += printed;
        buf_size -= printed;
 
-       if (stellaris_info->num_lockbits>0) {           
-               printed = snprintf(buf, buf_size, "pagesize: %i, lockbits: %i 0x%4.4x, pages in lock region: %i \n", stellaris_info->pagesize, stellaris_info->num_lockbits, stellaris_info->lockbits,stellaris_info->num_pages/stellaris_info->num_lockbits);
+       if (stellaris_info->num_lockbits > 0)
+       {
+               printed = snprintf(buf,
+                                  buf_size,
+                                  "pagesize: %" PRIi32 ", lockbits: %i 0x%4.4" PRIx32 ", pages in lock region: %i \n",
+                                  stellaris_info->pagesize,
+                                  stellaris_info->num_lockbits,
+                                  stellaris_info->lockbits,
+                                  (int)(stellaris_info->num_pages/stellaris_info->num_lockbits));
                buf += printed;
                buf_size -= printed;
        }
@@ -299,36 +341,36 @@ int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size)
 *      chip identification and status                                         *
 ***************************************************************************/
 
-u32 stellaris_get_flash_status(flash_bank_t *bank)
+static uint32_t stellaris_get_flash_status(flash_bank_t *bank)
 {
        target_t *target = bank->target;
-       u32 fmc;
-       
-       target_read_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, &fmc);
-       
+       uint32_t fmc;
+
+       target_read_u32(target, FLASH_CONTROL_BASE | FLASH_FMC, &fmc);
+
        return fmc;
 }
 
 /** Read clock configuration and set stellaris_info->usec_clocks*/
-void stellaris_read_clock_info(flash_bank_t *bank)
+
+static void stellaris_read_clock_info(flash_bank_t *bank)
 {
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
-       u32 rcc, pllcfg, sysdiv, usesysdiv, bypass, oscsrc;
+       uint32_t rcc, pllcfg, sysdiv, usesysdiv, bypass, oscsrc;
        unsigned long mainfreq;
 
-       target_read_u32(target, SCB_BASE|RCC, &rcc);
-       DEBUG("Stellaris RCC %x",rcc);
-       target_read_u32(target, SCB_BASE|PLLCFG, &pllcfg);
-       DEBUG("Stellaris PLLCFG %x",pllcfg);
+       target_read_u32(target, SCB_BASE | RCC, &rcc);
+       LOG_DEBUG("Stellaris RCC %" PRIx32 "", rcc);
+       target_read_u32(target, SCB_BASE | PLLCFG, &pllcfg);
+       LOG_DEBUG("Stellaris PLLCFG %" PRIx32 "", pllcfg);
        stellaris_info->rcc = rcc;
-       
-       sysdiv = (rcc>>23)&0xF;
-       usesysdiv = (rcc>>22)&0x1;
-       bypass = (rcc>>11)&0x1;
-       oscsrc = (rcc>>4)&0x3;
-       /* xtal = (rcc>>6)&0xF; */
+
+       sysdiv = (rcc >> 23) & 0xF;
+       usesysdiv = (rcc >> 22) & 0x1;
+       bypass = (rcc >> 11) & 0x1;
+       oscsrc = (rcc >> 4) & 0x3;
+       /* xtal = (rcc >> 6)&0xF; */
        switch (oscsrc)
        {
                case 0:
@@ -341,155 +383,163 @@ void stellaris_read_clock_info(flash_bank_t *bank)
                        mainfreq = 5625000;  /* Internal osc. / 4 */
                        break;
                case 3:
-                       WARNING("Invalid oscsrc (3) in rcc register");
+                       LOG_WARNING("Invalid oscsrc (3) in rcc register");
                        mainfreq = 6000000;
                        break;
+
+               default: /* NOTREACHED */
+                       mainfreq = 0;
+                       break;
        }
-       
+
        if (!bypass)
                mainfreq = 200000000; /* PLL out frec */
-               
+
        if (usesysdiv)
-               stellaris_info->mck_freq = mainfreq/(1+sysdiv);
+               stellaris_info->mck_freq = mainfreq/(1 + sysdiv);
        else
                stellaris_info->mck_freq = mainfreq;
-       
+
        /* Forget old flash timing */
-       stellaris_set_flash_mode(bank,0);
+       stellaris_set_flash_mode(bank, 0);
 }
 
 /* Setup the timimg registers */
-void stellaris_set_flash_mode(flash_bank_t *bank,int mode)
+static void stellaris_set_flash_mode(flash_bank_t *bank,int mode)
 {
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
 
-       u32 usecrl = (stellaris_info->mck_freq/1000000ul-1);
-       DEBUG("usecrl = %i",usecrl);    
-       target_write_u32(target, SCB_BASE|USECRL , usecrl);
-       
+       uint32_t usecrl = (stellaris_info->mck_freq/1000000ul-1);
+       LOG_DEBUG("usecrl = %i",(int)(usecrl));
+       target_write_u32(target, SCB_BASE | USECRL, usecrl);
 }
 
-u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout)
+#if 0
+static uint32_t stellaris_wait_status_busy(flash_bank_t *bank, uint32_t waitbits, int timeout)
 {
-       u32 status;
-       
+       uint32_t status;
+
        /* Stellaris waits for cmdbit to clear */
        while (((status = stellaris_get_flash_status(bank)) & waitbits) && (timeout-- > 0))
        {
-               DEBUG("status: 0x%x", status);
-               usleep(1000);
+               LOG_DEBUG("status: 0x%x", status);
+               alive_sleep(1);
        }
-       
+
        /* Flash errors are reflected in the FLASH_CRIS register */
 
        return status;
 }
 
-
 /* Send one command to the flash controller */
-int stellaris_flash_command(struct flash_bank_s *bank,u8 cmd,u16 pagen) 
+static int stellaris_flash_command(struct flash_bank_s *bank,uint8_t cmd,uint16_t pagen)
 {
-       u32 fmc;
-//     stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+       uint32_t fmc;
        target_t *target = bank->target;
 
-       fmc = FMC_WRKEY | cmd; 
-       target_write_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, fmc);
-       DEBUG("Flash command: 0x%x", fmc);
+       fmc = FMC_WRKEY | cmd;
+       target_write_u32(target, FLASH_CONTROL_BASE | FLASH_FMC, fmc);
+       LOG_DEBUG("Flash command: 0x%x", fmc);
 
-       if (stellaris_wait_status_busy(bank, cmd, 100)) 
+       if (stellaris_wait_status_busy(bank, cmd, 100))
        {
                return ERROR_FLASH_OPERATION_FAILED;
-       }               
+       }
 
        return ERROR_OK;
 }
+#endif
 
 /* Read device id register, main clock frequency register and fill in driver info structure */
-int stellaris_read_part_info(struct flash_bank_s *bank)
+static int stellaris_read_part_info(struct flash_bank_s *bank)
 {
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
-    u32 did0,did1, ver, fam, status;
+       uint32_t did0, did1, ver, fam, status;
        int i;
-       
-       /* Read and parse chip identification register */
-       target_read_u32(target, SCB_BASE|DID0, &did0);
-       target_read_u32(target, SCB_BASE|DID1, &did1);
-       target_read_u32(target, SCB_BASE|DC0, &stellaris_info->dc0);
-       target_read_u32(target, SCB_BASE|DC1, &stellaris_info->dc1);
-       DEBUG("did0 0x%x, did1 0x%x, dc0 0x%x, dc1 0x%x",did0, did1, stellaris_info->dc0,stellaris_info->dc1);
 
-    ver = did0 >> 28;
-    if((ver != 0) && (ver != 1))
+       /* Read and parse chip identification register */
+       target_read_u32(target, SCB_BASE | DID0, &did0);
+       target_read_u32(target, SCB_BASE | DID1, &did1);
+       target_read_u32(target, SCB_BASE | DC0, &stellaris_info->dc0);
+       target_read_u32(target, SCB_BASE | DC1, &stellaris_info->dc1);
+       LOG_DEBUG("did0 0x%" PRIx32 ", did1 0x%" PRIx32 ", dc0 0x%" PRIx32 ", dc1 0x%" PRIx32 "",
+                 did0, did1, stellaris_info->dc0, stellaris_info->dc1);
+
+       ver = did0 >> 28;
+       if ((ver != 0) && (ver != 1))
        {
-        WARNING("Unknown did0 version, cannot identify target");
-               return ERROR_FLASH_OPERATION_FAILED;    
+               LOG_WARNING("Unknown did0 version, cannot identify target");
+               return ERROR_FLASH_OPERATION_FAILED;
        }
 
-    ver = did1 >> 28;
-    fam = (did1 >> 24) & 0xF;
-    if(((ver != 0) && (ver != 1)) || (fam != 0))
+       if (did1 == 0)
        {
-        WARNING("Unknown did1 version/family, cannot positively identify target as a Stellaris");
+               LOG_WARNING("Cannot identify target as a Stellaris");
+               return ERROR_FLASH_OPERATION_FAILED;
        }
 
-       if (did1 == 0)
+       ver = did1 >> 28;
+       fam = (did1 >> 24) & 0xF;
+       if (((ver != 0) && (ver != 1)) || (fam != 0))
        {
-               WARNING("Cannot identify target as a Stellaris");
-               return ERROR_FLASH_OPERATION_FAILED;
+               LOG_WARNING("Unknown did1 version/family, cannot positively identify target as a Stellaris");
        }
-       
-       for (i=0;StellarisParts[i].partno;i++)
+
+       for (i = 0; StellarisParts[i].partno; i++)
        {
-               if (StellarisParts[i].partno==((did1>>16)&0xFF))
+               if (StellarisParts[i].partno == ((did1 >> 16) & 0xFF))
                        break;
        }
-       
+
        stellaris_info->target_name = StellarisParts[i].partname;
-       
+
        stellaris_info->did0 = did0;
        stellaris_info->did1 = did1;
 
-       stellaris_info->num_lockbits = 1+stellaris_info->dc0&0xFFFF;
-       stellaris_info->num_pages = 2*(1+stellaris_info->dc0&0xFFFF);
+       stellaris_info->num_lockbits = 1 + (stellaris_info->dc0 & 0xFFFF);
+       stellaris_info->num_pages = 2 *(1 + (stellaris_info->dc0 & 0xFFFF));
        stellaris_info->pagesize = 1024;
-       bank->size = 1024*stellaris_info->num_pages;
+       bank->size = 1024 * stellaris_info->num_pages;
        stellaris_info->pages_in_lockregion = 2;
-       target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);
+       target_read_u32(target, SCB_BASE | FMPPE, &stellaris_info->lockbits);
 
-       // Read main and master clock freqency register 
+       /* provide this for the benefit of the higher flash driver layers */
+       bank->num_sectors = stellaris_info->num_pages;
+       bank->sectors = malloc(sizeof(flash_sector_t) * bank->num_sectors);
+       for (i = 0; i < bank->num_sectors; i++)
+       {
+               bank->sectors[i].offset = i * stellaris_info->pagesize;
+               bank->sectors[i].size = stellaris_info->pagesize;
+               bank->sectors[i].is_erased = -1;
+               bank->sectors[i].is_protected = -1;
+       }
+
+       /* Read main and master clock freqency register */
        stellaris_read_clock_info(bank);
-       
+
        status = stellaris_get_flash_status(bank);
-       
+
        return ERROR_OK;
 }
 
 /***************************************************************************
-*      flash operations                                         *
+*      flash operations                                                       *
 ***************************************************************************/
 
-int stellaris_erase_check(struct flash_bank_s *bank)
+static int stellaris_protect_check(struct flash_bank_s *bank)
 {
-       /* 
-       
-       stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
-       target_t *target = bank->target;
-       int i;
-       
-       */
-       
-       return ERROR_OK;
-}
+       uint32_t status;
 
-int stellaris_protect_check(struct flash_bank_s *bank)
-{
-       u32 status;
-       
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
 
+       if (bank->target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
        if (stellaris_info->did1 == 0)
        {
                stellaris_read_part_info(bank);
@@ -497,23 +547,29 @@ int stellaris_protect_check(struct flash_bank_s *bank)
 
        if (stellaris_info->did1 == 0)
        {
-               WARNING("Cannot identify target as an AT91SAM");
+               LOG_WARNING("Cannot identify target as an AT91SAM");
                return ERROR_FLASH_OPERATION_FAILED;
        }
-               
+
        status = stellaris_get_flash_status(bank);
        stellaris_info->lockbits = status >> 16;
-       
+
        return ERROR_OK;
 }
 
-int stellaris_erase(struct flash_bank_s *bank, int first, int last)
+static int stellaris_erase(struct flash_bank_s *bank, int first, int last)
 {
        int banknr;
-       u32 flash_fmc, flash_cris;
+       uint32_t flash_fmc, flash_cris;
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
-       
+
+       if (bank->target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
        if (stellaris_info->did1 == 0)
        {
                stellaris_read_part_info(bank);
@@ -521,54 +577,32 @@ int stellaris_erase(struct flash_bank_s *bank, int first, int last)
 
        if (stellaris_info->did1 == 0)
        {
-        WARNING("Cannot identify target as Stellaris");
+               LOG_WARNING("Cannot identify target as Stellaris");
                return ERROR_FLASH_OPERATION_FAILED;
-       }       
-       
-       if ((first < 0) || (last < first) || (last >= stellaris_info->num_pages))
+       }
+
+       if ((first < 0) || (last < first) || (last >= (int)stellaris_info->num_pages))
        {
                return ERROR_FLASH_SECTOR_INVALID;
        }
 
+       if ((first == 0) && (last == ((int)stellaris_info->num_pages-1)))
+       {
+               return stellaris_mass_erase(bank);
+       }
+
        /* Configure the flash controller timing */
-       stellaris_read_clock_info(bank);        
+       stellaris_read_clock_info(bank);
        stellaris_set_flash_mode(bank,0);
 
        /* Clear and disable flash programming interrupts */
        target_write_u32(target, FLASH_CIM, 0);
-       target_write_u32(target, FLASH_MISC, PMISC|AMISC);
-
-       if ((first == 0) && (last == (stellaris_info->num_pages-1)))
-       {
-        target_write_u32(target, FLASH_FMA, 0);
-               target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
-               /* Wait until erase complete */
-               do
-               {
-                       target_read_u32(target, FLASH_FMC, &flash_fmc);
-               }
-               while(flash_fmc & FMC_MERASE);
-               
-        /* if device has > 128k, then second erase cycle is needed */
-        if(stellaris_info->num_pages * stellaris_info->pagesize > 0x20000)
-        {
-            target_write_u32(target, FLASH_FMA, 0x20000);
-            target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
-            /* Wait until erase complete */
-            do
-            {
-                target_read_u32(target, FLASH_FMC, &flash_fmc);
-            }
-            while(flash_fmc & FMC_MERASE);
-        }
+       target_write_u32(target, FLASH_MISC, PMISC | AMISC);
 
-               return ERROR_OK;
-       }
-
-       for (banknr=first;banknr<=last;banknr++)
+       for (banknr = first; banknr <= last; banknr++)
        {
                /* Address is first word in page */
-               target_write_u32(target, FLASH_FMA, banknr*stellaris_info->pagesize);
+               target_write_u32(target, FLASH_FMA, banknr * stellaris_info->pagesize);
                /* Write erase command */
                target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_ERASE);
                /* Wait until erase complete */
@@ -576,39 +610,42 @@ int stellaris_erase(struct flash_bank_s *bank, int first, int last)
                {
                        target_read_u32(target, FLASH_FMC, &flash_fmc);
                }
-               while(flash_fmc & FMC_ERASE);
+               while (flash_fmc & FMC_ERASE);
 
                /* Check acess violations */
                target_read_u32(target, FLASH_CRIS, &flash_cris);
-               if(flash_cris & (AMASK))
+               if (flash_cris & (AMASK))
                {
-                       WARNING("Error erasing flash page %i,  flash_cris 0x%x", banknr, flash_cris);
+                       LOG_WARNING("Error erasing flash page %i,  flash_cris 0x%" PRIx32 "", banknr, flash_cris);
                        target_write_u32(target, FLASH_CRIS, 0);
                        return ERROR_FLASH_OPERATION_FAILED;
                }
+
+               bank->sectors[banknr].is_erased = 1;
        }
 
        return ERROR_OK;
 }
 
-int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last)
+static int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last)
 {
-       u32 fmppe, flash_fmc, flash_cris;
+       uint32_t fmppe, flash_fmc, flash_cris;
        int lockregion;
-       
+
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
-       
+
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
-       
+
        if ((first < 0) || (last < first) || (last >= stellaris_info->num_lockbits))
        {
                return ERROR_FLASH_SECTOR_INVALID;
        }
-       
+
        if (stellaris_info->did1 == 0)
        {
                stellaris_read_part_info(bank);
@@ -616,201 +653,195 @@ int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last)
 
        if (stellaris_info->did1 == 0)
        {
-               WARNING("Cannot identify target as an Stellaris MCU");
+               LOG_WARNING("Cannot identify target as an Stellaris MCU");
                return ERROR_FLASH_OPERATION_FAILED;
        }
-       
+
        /* Configure the flash controller timing */
-       stellaris_read_clock_info(bank);        
-       stellaris_set_flash_mode(bank,0);
+       stellaris_read_clock_info(bank);
+       stellaris_set_flash_mode(bank, 0);
 
-       fmppe = stellaris_info->lockbits;       
-       for (lockregion=first;lockregion<=last;lockregion++) 
+       fmppe = stellaris_info->lockbits;
+       for (lockregion = first; lockregion <= last; lockregion++)
        {
                if (set)
-                        fmppe &= ~(1<<lockregion); 
+                       fmppe &= ~(1 << lockregion);
                else
-                        fmppe |= (1<<lockregion); 
+                       fmppe |= (1 << lockregion);
        }
 
        /* Clear and disable flash programming interrupts */
        target_write_u32(target, FLASH_CIM, 0);
-       target_write_u32(target, FLASH_MISC, PMISC|AMISC);
-       
-       DEBUG("fmppe 0x%x",fmppe);
-       target_write_u32(target, SCB_BASE|FMPPE, fmppe);
+       target_write_u32(target, FLASH_MISC, PMISC | AMISC);
+
+       LOG_DEBUG("fmppe 0x%" PRIx32 "",fmppe);
+       target_write_u32(target, SCB_BASE | FMPPE, fmppe);
        /* Commit FMPPE */
        target_write_u32(target, FLASH_FMA, 1);
        /* Write commit command */
        /* TODO safety check, sice this cannot be undone */
-       WARNING("Flash protection cannot be removed once commited, commit is NOT executed !");
+       LOG_WARNING("Flash protection cannot be removed once commited, commit is NOT executed !");
        /* target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_COMT); */
        /* Wait until erase complete */
        do
        {
                target_read_u32(target, FLASH_FMC, &flash_fmc);
        }
-       while(flash_fmc & FMC_COMT);
+       while (flash_fmc & FMC_COMT);
 
        /* Check acess violations */
        target_read_u32(target, FLASH_CRIS, &flash_cris);
-       if(flash_cris & (AMASK))
+       if (flash_cris & (AMASK))
        {
-               WARNING("Error setting flash page protection,  flash_cris 0x%x", flash_cris);
+               LOG_WARNING("Error setting flash page protection,  flash_cris 0x%" PRIx32 "", flash_cris);
                target_write_u32(target, FLASH_CRIS, 0);
                return ERROR_FLASH_OPERATION_FAILED;
        }
-       
-       target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);
-               
+
+       target_read_u32(target, SCB_BASE | FMPPE, &stellaris_info->lockbits);
+
        return ERROR_OK;
 }
 
-u8 stellaris_write_code[] = 
+static uint8_t stellaris_write_code[] =
 {
-/* 
-       Call with :     
+/*
+       Call with :
        r0 = buffer address
        r1 = destination address
-       r2 = bytecount (in) - endaddr (work) 
-       
-       Used registers: 
+       r2 = bytecount (in) - endaddr (work)
+
+       Used registers:
        r3 = pFLASH_CTRL_BASE
        r4 = FLASHWRITECMD
        r5 = #1
        r6 = bytes written
        r7 = temp reg
 */
-       0x07,0x4B,              /* ldr r3,pFLASH_CTRL_BASE */
-       0x08,0x4C,              /* ldr r4,FLASHWRITECMD */
-       0x01,0x25,              /* movs r5, 1 */
-       0x00,0x26,              /* movs r6, #0 */
+       0x07,0x4B,                      /* ldr r3,pFLASH_CTRL_BASE */
+       0x08,0x4C,                      /* ldr r4,FLASHWRITECMD */
+       0x01,0x25,                      /* movs r5, 1 */
+       0x00,0x26,                      /* movs r6, #0 */
 /* mainloop: */
-       0x19,0x60,              /* str  r1, [r3, #0] */
-       0x87,0x59,              /* ldr  r7, [r0, r6] */
-       0x5F,0x60,              /* str  r7, [r3, #4] */
-       0x9C,0x60,              /* str  r4, [r3, #8] */
+       0x19,0x60,                      /* str  r1, [r3, #0] */
+       0x87,0x59,                      /* ldr  r7, [r0, r6] */
+       0x5F,0x60,                      /* str  r7, [r3, #4] */
+       0x9C,0x60,                      /* str  r4, [r3, #8] */
 /* waitloop: */
-       0x9F,0x68,              /* ldr  r7, [r3, #8] */
-       0x2F,0x42,              /* tst  r7, r5 */
-       0xFC,0xD1,              /* bne  waitloop */
-       0x04,0x31,              /* adds r1, r1, #4 */
-       0x04,0x36,              /* adds r6, r6, #4 */
-       0x96,0x42,              /* cmp  r6, r2 */
-       0xF4,0xD1,              /* bne  mainloop */
-       0x00,0xBE,              /* bkpt #0 */
+       0x9F,0x68,                      /* ldr  r7, [r3, #8] */
+       0x2F,0x42,                      /* tst  r7, r5 */
+       0xFC,0xD1,                      /* bne  waitloop */
+       0x04,0x31,                      /* adds r1, r1, #4 */
+       0x04,0x36,                      /* adds r6, r6, #4 */
+       0x96,0x42,                      /* cmp  r6, r2 */
+       0xF4,0xD1,                      /* bne  mainloop */
+                                               /* exit: */
+       0xFE,0xE7,                      /* b exit */
 /* pFLASH_CTRL_BASE: */
-       0x00,0xD0,0x0F,0x40,    /* .word        0x400FD000 */
+       0x00,0xD0,0x0F,0x40,    /* .word        0x400FD000 */
 /* FLASHWRITECMD: */
        0x01,0x00,0x42,0xA4     /* .word        0xA4420001 */
 };
 
-int stellaris_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 wcount)
+static int stellaris_write_block(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t wcount)
 {
-//     stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
-       u32 buffer_size = 8192;
+       uint32_t buffer_size = 8192;
        working_area_t *source;
        working_area_t *write_algorithm;
-       u32 address = bank->base + offset;
-       reg_param_t reg_params[8];
+       uint32_t address = bank->base + offset;
+       reg_param_t reg_params[3];
        armv7m_algorithm_t armv7m_info;
-       int retval;
-       
-       DEBUG("(bank=%08X buffer=%08X offset=%08X wcount=%08X)",
-                       (unsigned int)bank, (unsigned int)buffer, offset, wcount);
+       int retval = ERROR_OK;
+
+       LOG_DEBUG("(bank=%p buffer=%p offset=%08" PRIx32 " wcount=%08" PRIx32 "",
+                       bank, buffer, offset, wcount);
 
        /* flash write code */
        if (target_alloc_working_area(target, sizeof(stellaris_write_code), &write_algorithm) != ERROR_OK)
-               {
-                       WARNING("no working area available, can't do block memory writes");
-                       return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
-               };
+       {
+               LOG_WARNING("no working area available, can't do block memory writes");
+               return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+       };
 
        target_write_buffer(target, write_algorithm->address, sizeof(stellaris_write_code), stellaris_write_code);
 
        /* memory buffer */
        while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
        {
-               DEBUG("called target_alloc_working_area(target=%08X buffer_size=%08X source=%08X)",
-                               (unsigned int)target, buffer_size, (unsigned int)source); 
+               LOG_DEBUG("called target_alloc_working_area(target=%p buffer_size=%08" PRIx32 " source=%p)",
+                               target, buffer_size, source);
                buffer_size /= 2;
                if (buffer_size <= 256)
                {
                        /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
                        if (write_algorithm)
                                target_free_working_area(target, write_algorithm);
-                       
-                       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;
-       armv7m_info.core_state = ARMV7M_STATE_THUMB;
-       
+
        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_OUT);
-       init_reg_param(&reg_params[5], "r5", 32, PARAM_OUT);
-       init_reg_param(&reg_params[6], "r6", 32, PARAM_OUT);
-       init_reg_param(&reg_params[7], "r7", 32, PARAM_OUT);
 
        while (wcount > 0)
        {
-               u32 thisrun_count = (wcount > (buffer_size / 4)) ? (buffer_size / 4) : wcount;
-               
+               uint32_t thisrun_count = (wcount > (buffer_size / 4)) ? (buffer_size / 4) : wcount;
+
                target_write_buffer(target, source->address, thisrun_count * 4, 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, 4*thisrun_count);
-               WARNING("Algorithm flash write  %i words to 0x%x, %i remaining",thisrun_count,address, wcount);
-               DEBUG("Algorithm flash write  %i words to 0x%x, %i remaining",thisrun_count,address, wcount);
-               if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, write_algorithm->address, write_algorithm->address + sizeof(stellaris_write_code)-10, 10000, &armv7m_info)) != ERROR_OK)
+               LOG_INFO("Algorithm flash write %" PRIi32 " words to 0x%" PRIx32 ", %" PRIi32 " remaining", thisrun_count, address, wcount);
+               LOG_DEBUG("Algorithm flash write %" PRIi32 " words to 0x%" PRIx32 ", %" PRIi32 " remaining", thisrun_count, address, wcount);
+               if ((retval = target_run_algorithm(target, 0, NULL, 3, reg_params, write_algorithm->address, write_algorithm->address + sizeof(stellaris_write_code)-10, 10000, &armv7m_info)) != ERROR_OK)
                {
-                       ERROR("error executing stellaris flash write algorithm");
-                       target_free_working_area(target, source);
-                       destroy_reg_param(&reg_params[0]);
-                       destroy_reg_param(&reg_params[1]);
-                       destroy_reg_param(&reg_params[2]);
-                       return ERROR_FLASH_OPERATION_FAILED;
+                       LOG_ERROR("error executing stellaris flash write algorithm");
+                       retval = ERROR_FLASH_OPERATION_FAILED;
+                       break;
                }
-       
+
                buffer += thisrun_count * 4;
                address += thisrun_count * 4;
                wcount -= thisrun_count;
        }
-       
 
        target_free_working_area(target, write_algorithm);
        target_free_working_area(target, source);
-       
+
        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]);
-       destroy_reg_param(&reg_params[5]);
-       destroy_reg_param(&reg_params[6]);
-       destroy_reg_param(&reg_params[7]);
-       
-       return ERROR_OK;
+
+       return retval;
 }
 
-int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+static int stellaris_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 {
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
-       u32 address = offset;
-       u32 flash_cris,flash_fmc;
-       u32 retval;
-       
-       DEBUG("(bank=%08X buffer=%08X offset=%08X count=%08X)",
-                       (unsigned int)bank, (unsigned int)buffer, offset, count);
+       uint32_t address = offset;
+       uint32_t flash_cris, flash_fmc;
+       uint32_t words_remaining = (count / 4);
+       uint32_t bytes_remaining = (count & 0x00000003);
+       uint32_t bytes_written = 0;
+       int retval;
+
+       if (bank->target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
+       LOG_DEBUG("(bank=%p buffer=%p offset=%08" PRIx32 " count=%08" PRIx32 "",
+                       bank, buffer, offset, count);
 
        if (stellaris_info->did1 == 0)
        {
@@ -819,97 +850,153 @@ int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count
 
        if (stellaris_info->did1 == 0)
        {
-               WARNING("Cannot identify target as a Stellaris processor");
+               LOG_WARNING("Cannot identify target as a Stellaris processor");
                return ERROR_FLASH_OPERATION_FAILED;
        }
-       
-       if((offset & 3) || (count & 3))
+
+       if (offset & 0x3)
        {
-               WARNING("offset size must be word aligned");
+               LOG_WARNING("offset size must be word aligned");
                return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
        }
-       
+
        if (offset + count > bank->size)
                return ERROR_FLASH_DST_OUT_OF_BANK;
 
-       /* Configure the flash controller timing */     
-       stellaris_read_clock_info(bank);        
-       stellaris_set_flash_mode(bank,0);
+       /* Configure the flash controller timing */
+       stellaris_read_clock_info(bank);
+       stellaris_set_flash_mode(bank, 0);
 
-       
        /* Clear and disable flash programming interrupts */
        target_write_u32(target, FLASH_CIM, 0);
-       target_write_u32(target, FLASH_MISC, PMISC|AMISC);
+       target_write_u32(target, FLASH_MISC, PMISC | AMISC);
 
        /* multiple words to be programmed? */
-       if (count > 0) 
+       if (words_remaining > 0)
        {
                /* try using a block write */
-               if ((retval = stellaris_write_block(bank, buffer, offset, count/4)) != ERROR_OK)
+               if ((retval = stellaris_write_block(bank, buffer, offset, words_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");
+                                * we use normal (slow) single dword accesses */
+                               LOG_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 */
                                target_read_u32(target, FLASH_CRIS, &flash_cris);
-                               
-                               ERROR("flash writing failed with CRIS: 0x%x", flash_cris);
+
+                               LOG_ERROR("flash writing failed with CRIS: 0x%" PRIx32 "", flash_cris);
                                return ERROR_FLASH_OPERATION_FAILED;
                        }
                }
                else
                {
-                       buffer += count * 4;
-                       address += count * 4;
-                       count = 0;
+                       buffer += words_remaining * 4;
+                       address += words_remaining * 4;
+                       words_remaining = 0;
                }
        }
 
-
-
-       while(count>0)
+       while (words_remaining > 0)
        {
-               if (!(address&0xff)) DEBUG("0x%x",address);
+               if (!(address & 0xff))
+                       LOG_DEBUG("0x%" PRIx32 "", address);
+
                /* Program one word */
                target_write_u32(target, FLASH_FMA, address);
                target_write_buffer(target, FLASH_FMD, 4, buffer);
                target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
-               //DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE);
+               /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
                /* Wait until write complete */
                do
                {
                        target_read_u32(target, FLASH_FMC, &flash_fmc);
-               }
-               while(flash_fmc & FMC_WRITE);
+               } while (flash_fmc & FMC_WRITE);
+
                buffer += 4;
                address += 4;
-               count -= 4;
+               words_remaining--;
        }
-       /* Check acess violations */
+
+       if (bytes_remaining)
+       {
+               uint8_t last_word[4] = {0xff, 0xff, 0xff, 0xff};
+               int i = 0;
+
+               while (bytes_remaining > 0)
+               {
+                       last_word[i++] = *(buffer + bytes_written);
+                       bytes_remaining--;
+                       bytes_written++;
+               }
+
+               if (!(address & 0xff))
+                       LOG_DEBUG("0x%" PRIx32 "", address);
+
+               /* Program one word */
+               target_write_u32(target, FLASH_FMA, address);
+               target_write_buffer(target, FLASH_FMD, 4, last_word);
+               target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
+               /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
+               /* Wait until write complete */
+               do
+               {
+                       target_read_u32(target, FLASH_FMC, &flash_fmc);
+               } while (flash_fmc & FMC_WRITE);
+       }
+
+       /* Check access violations */
        target_read_u32(target, FLASH_CRIS, &flash_cris);
-       if(flash_cris & (AMASK))
+       if (flash_cris & (AMASK))
        {
-               DEBUG("flash_cris 0x%x", flash_cris);
+               LOG_DEBUG("flash_cris 0x%" PRIx32 "", flash_cris);
                return ERROR_FLASH_OPERATION_FAILED;
        }
        return ERROR_OK;
 }
 
-
-int stellaris_probe(struct flash_bank_s *bank)
+static int stellaris_probe(struct flash_bank_s *bank)
 {
        /* we can't probe on an stellaris
         * if this is an stellaris, it has the configured flash
         */
+
+       if (bank->target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
+       /* stellaris_read_part_info() already takes care about error checking and reporting */
+       return stellaris_read_part_info(bank);
+}
+
+static int stellaris_auto_probe(struct flash_bank_s *bank)
+{
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
-       
-       stellaris_info->probed = 0;
-       
+       if (stellaris_info->did1)
+               return ERROR_OK;
+       return stellaris_probe(bank);
+}
+
+static int stellaris_mass_erase(struct flash_bank_s *bank)
+{
+       target_t *target = NULL;
+       stellaris_flash_bank_t *stellaris_info = NULL;
+       uint32_t flash_fmc;
+
+       stellaris_info = bank->driver_priv;
+       target = bank->target;
+
+       if (target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
        if (stellaris_info->did1 == 0)
        {
                stellaris_read_part_info(bank);
@@ -917,19 +1004,76 @@ int stellaris_probe(struct flash_bank_s *bank)
 
        if (stellaris_info->did1 == 0)
        {
-               WARNING("Cannot identify target as a LMI Stellaris");
+               LOG_WARNING("Cannot identify target as Stellaris");
                return ERROR_FLASH_OPERATION_FAILED;
        }
-       
-       stellaris_info->probed = 1;
-       
+
+       /* Configure the flash controller timing */
+       stellaris_read_clock_info(bank);
+       stellaris_set_flash_mode(bank, 0);
+
+       /* Clear and disable flash programming interrupts */
+       target_write_u32(target, FLASH_CIM, 0);
+       target_write_u32(target, FLASH_MISC, PMISC | AMISC);
+
+       target_write_u32(target, FLASH_FMA, 0);
+       target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
+       /* Wait until erase complete */
+       do
+       {
+               target_read_u32(target, FLASH_FMC, &flash_fmc);
+       }
+       while (flash_fmc & FMC_MERASE);
+
+       /* if device has > 128k, then second erase cycle is needed
+        * this is only valid for older devices, but will not hurt */
+       if (stellaris_info->num_pages * stellaris_info->pagesize > 0x20000)
+       {
+               target_write_u32(target, FLASH_FMA, 0x20000);
+               target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
+               /* Wait until erase complete */
+               do
+               {
+                       target_read_u32(target, FLASH_FMC, &flash_fmc);
+               }
+               while (flash_fmc & FMC_MERASE);
+       }
+
        return ERROR_OK;
 }
 
-int stellaris_auto_probe(struct flash_bank_s *bank)
+static int stellaris_handle_mass_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 {
-       stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
-       if (stellaris_info->probed)
+       flash_bank_t *bank;
+       int i;
+
+       if (argc < 1)
+       {
+               command_print(cmd_ctx, "stellaris mass_erase <bank>");
                return ERROR_OK;
-       return stellaris_probe(bank);
+       }
+
+       bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
+       if (!bank)
+       {
+               command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
+               return ERROR_OK;
+       }
+
+       if (stellaris_mass_erase(bank) == 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, "stellaris mass erase complete");
+       }
+       else
+       {
+               command_print(cmd_ctx, "stellaris mass erase failed");
+       }
+
+       return ERROR_OK;
 }