armv4_5_algorithm_t -> struct armv4_5_algorithm
[openocd.git] / src / flash / cfi.c
index 88e8e63db44a68d12e3f7a382e9cc5a58065072d..c0c2cb79ddbd4dde5484ce4b845c488fd2694a0a 100644 (file)
@@ -1,6 +1,8 @@
 /***************************************************************************
  *   Copyright (C) 2005, 2007 by Dominic Rath                              *
  *   Dominic.Rath@gmx.de                                                   *
+ *   Copyright (C) 2009 Michael Schwingen                                  *
+ *   michael@schwingen.org                                                 *
  *                                                                         *
  *   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  *
 #include "config.h"
 #endif
 
-#include "replacements.h"
-
 #include "cfi.h"
-
-#include "flash.h"
-#include "target.h"
-#include "log.h"
+#include "non_cfi.h"
 #include "armv4_5.h"
-#include "algorithm.h"
 #include "binarybuffer.h"
-#include "types.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-int cfi_register_commands(struct command_context_s *cmd_ctx);
-int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
-int cfi_erase(struct flash_bank_s *bank, int first, int last);
-int cfi_protect(struct flash_bank_s *bank, int set, int first, int last);
-int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
-int cfi_probe(struct flash_bank_s *bank);
-int cfi_auto_probe(struct flash_bank_s *bank);
-int cfi_erase_check(struct flash_bank_s *bank);
-int cfi_protect_check(struct flash_bank_s *bank);
-int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size);
 
-int cfi_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 
 #define CFI_MAX_BUS_WIDTH      4
 #define CFI_MAX_CHIP_WIDTH     4
@@ -56,68 +35,42 @@ int cfi_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, cha
 /* defines internal maximum size for code fragment in cfi_intel_write_block() */
 #define CFI_MAX_INTEL_CODESIZE 256
 
-flash_driver_t cfi_flash =
-{
-       .name = "cfi",
-       .register_commands = cfi_register_commands,
-       .flash_bank_command = cfi_flash_bank_command,
-       .erase = cfi_erase,
-       .protect = cfi_protect,
-       .write = cfi_write,
-       .probe = cfi_probe,
-       .auto_probe = cfi_auto_probe,
-       .erase_check = cfi_erase_check,
-       .protect_check = cfi_protect_check,
-       .info = cfi_info
-};
-
-cfi_unlock_addresses_t cfi_unlock_addresses[] =
+static struct cfi_unlock_addresses cfi_unlock_addresses[] =
 {
        [CFI_UNLOCK_555_2AA] = { .unlock1 = 0x555, .unlock2 = 0x2aa },
        [CFI_UNLOCK_5555_2AAA] = { .unlock1 = 0x5555, .unlock2 = 0x2aaa },
 };
 
 /* CFI fixups foward declarations */
-void cfi_fixup_non_cfi(flash_bank_t *flash, void *param);
-void cfi_fixup_0002_erase_regions(flash_bank_t *flash, void *param);
-void cfi_fixup_0002_unlock_addresses(flash_bank_t *flash, void *param);
-void cfi_fixup_atmel_reversed_erase_regions(flash_bank_t *flash, void *param);
-
-/* fixup after identifying JEDEC manufactuer and ID */
-cfi_fixup_t cfi_jedec_fixups[] = {
-       {CFI_MFR_SST, 0x00D4, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_SST, 0x00D5, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_SST, 0x00D6, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_SST, 0x00D7, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_SST, 0x2780, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_ST, 0x00D5, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_ST, 0x00D6, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_AMD, 0x2223, cfi_fixup_non_cfi, NULL},
-       {CFI_MFR_AMD, 0x22ab, cfi_fixup_non_cfi, NULL},
-       {0, 0, NULL, NULL}
-};
+static void cfi_fixup_0002_erase_regions(flash_bank_t *flash, void *param);
+static void cfi_fixup_0002_unlock_addresses(flash_bank_t *flash, void *param);
+static void cfi_fixup_atmel_reversed_erase_regions(flash_bank_t *flash, void *param);
 
 /* fixup after reading cmdset 0002 primary query table */
-cfi_fixup_t cfi_0002_fixups[] = {
+static const struct cfi_fixup cfi_0002_fixups[] = {
        {CFI_MFR_SST, 0x00D4, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
        {CFI_MFR_SST, 0x00D5, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
        {CFI_MFR_SST, 0x00D6, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
        {CFI_MFR_SST, 0x00D7, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
        {CFI_MFR_SST, 0x2780, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
        {CFI_MFR_ATMEL, 0x00C8, cfi_fixup_atmel_reversed_erase_regions, NULL},
+       {CFI_MFR_FUJITSU, 0x226b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
+       {CFI_MFR_AMIC, 0xb31a, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
+       {CFI_MFR_MX, 0x225b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
+       {CFI_MFR_AMD, 0x225b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
        {CFI_MFR_ANY, CFI_ID_ANY, cfi_fixup_0002_erase_regions, NULL},
        {0, 0, NULL, NULL}
 };
 
 /* fixup after reading cmdset 0001 primary query table */
-cfi_fixup_t cfi_0001_fixups[] = {
+static const struct cfi_fixup cfi_0001_fixups[] = {
        {0, 0, NULL, NULL}
 };
 
-void cfi_fixup(flash_bank_t *bank, cfi_fixup_t *fixups)
+static void cfi_fixup(flash_bank_t *bank, const struct cfi_fixup *fixups)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_fixup_t *f;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       const struct cfi_fixup *f;
 
        for (f = fixups; f->fixup; f++)
        {
@@ -129,8 +82,13 @@ void cfi_fixup(flash_bank_t *bank, cfi_fixup_t *fixups)
        }
 }
 
-inline u32 flash_address(flash_bank_t *bank, int sector, u32 offset)
+/* inline uint32_t flash_address(flash_bank_t *bank, int sector, uint32_t offset) */
+static __inline__ uint32_t flash_address(flash_bank_t *bank, int sector, uint32_t offset)
 {
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+
+       if (cfi_info->x16_as_x8) offset *= 2;
+
        /* while the sector list isn't built, only accesses to sector 0 work */
        if (sector == 0)
                return bank->base + offset * bank->bus_width;
@@ -138,7 +96,7 @@ inline u32 flash_address(flash_bank_t *bank, int sector, u32 offset)
        {
                if (!bank->sectors)
                {
-                       ERROR("BUG: sector list not yet built");
+                       LOG_ERROR("BUG: sector list not yet built");
                        exit(-1);
                }
                return bank->base + bank->sectors[sector].offset + offset * bank->bus_width;
@@ -146,7 +104,7 @@ inline u32 flash_address(flash_bank_t *bank, int sector, u32 offset)
 
 }
 
-void cfi_command(flash_bank_t *bank, u8 cmd, u8 *cmd_buf)
+static void cfi_command(flash_bank_t *bank, uint8_t cmd, uint8_t *cmd_buf)
 {
        int i;
 
@@ -176,12 +134,12 @@ void cfi_command(flash_bank_t *bank, u8 cmd, u8 *cmd_buf)
  * flash banks are expected to be made of similar chips
  * the query result should be the same for all
  */
-u8 cfi_query_u8(flash_bank_t *bank, int sector, u32 offset)
+static uint8_t cfi_query_u8(flash_bank_t *bank, int sector, uint32_t offset)
 {
        target_t *target = bank->target;
-       u8 data[CFI_MAX_BUS_WIDTH];
+       uint8_t data[CFI_MAX_BUS_WIDTH];
 
-       target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
+       target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
 
        if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
                return data[0];
@@ -193,13 +151,13 @@ u8 cfi_query_u8(flash_bank_t *bank, int sector, u32 offset)
  * in case of a bank made of multiple chips,
  * the individual values are ORed
  */
-u8 cfi_get_u8(flash_bank_t *bank, int sector, u32 offset)
+static uint8_t cfi_get_u8(flash_bank_t *bank, int sector, uint32_t offset)
 {
        target_t *target = bank->target;
-       u8 data[CFI_MAX_BUS_WIDTH];
+       uint8_t data[CFI_MAX_BUS_WIDTH];
        int i;
 
-       target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
+       target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
 
        if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
        {
@@ -210,7 +168,7 @@ u8 cfi_get_u8(flash_bank_t *bank, int sector, u32 offset)
        }
        else
        {
-               u8 value = 0;
+               uint8_t value = 0;
                for (i = 0; i < bank->bus_width / bank->chip_width; i++)
                        value |= data[bank->bus_width - 1 - i];
 
@@ -218,12 +176,21 @@ u8 cfi_get_u8(flash_bank_t *bank, int sector, u32 offset)
        }
 }
 
-u16 cfi_query_u16(flash_bank_t *bank, int sector, u32 offset)
+static uint16_t cfi_query_u16(flash_bank_t *bank, int sector, uint32_t offset)
 {
        target_t *target = bank->target;
-       u8 data[CFI_MAX_BUS_WIDTH * 2];
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       uint8_t data[CFI_MAX_BUS_WIDTH * 2];
 
-       target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 2, data);
+       if (cfi_info->x16_as_x8)
+       {
+               uint8_t i;
+               for (i = 0;i < 2;i++)
+                       target_read_memory(target, flash_address(bank, sector, offset + i), bank->bus_width, 1,
+                               &data[i*bank->bus_width]);
+       }
+       else
+               target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 2, data);
 
        if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
                return data[0] | data[bank->bus_width] << 8;
@@ -231,12 +198,21 @@ u16 cfi_query_u16(flash_bank_t *bank, int sector, u32 offset)
                return data[bank->bus_width - 1] | data[(2 * bank->bus_width) - 1] << 8;
 }
 
-u32 cfi_query_u32(flash_bank_t *bank, int sector, u32 offset)
+static uint32_t cfi_query_u32(flash_bank_t *bank, int sector, uint32_t offset)
 {
        target_t *target = bank->target;
-       u8 data[CFI_MAX_BUS_WIDTH * 4];
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       uint8_t data[CFI_MAX_BUS_WIDTH * 4];
 
-       target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 4, data);
+       if (cfi_info->x16_as_x8)
+       {
+               uint8_t i;
+               for (i = 0;i < 4;i++)
+                       target_read_memory(target, flash_address(bank, sector, offset + i), bank->bus_width, 1,
+                               &data[i*bank->bus_width]);
+       }
+       else
+               target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 4, data);
 
        if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
                return data[0] | data[bank->bus_width] << 8 | data[bank->bus_width * 2] << 16 | data[bank->bus_width * 3] << 24;
@@ -245,55 +221,55 @@ u32 cfi_query_u32(flash_bank_t *bank, int sector, u32 offset)
                                data[(3 * bank->bus_width) - 1] << 16 | data[(4 * bank->bus_width) - 1] << 24;
 }
 
-void cfi_intel_clear_status_register(flash_bank_t *bank)
+static void cfi_intel_clear_status_register(flash_bank_t *bank)
 {
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
 
        if (target->state != TARGET_HALTED)
        {
-               ERROR("BUG: attempted to clear status register while target wasn't halted");
+               LOG_ERROR("BUG: attempted to clear status register while target wasn't halted");
                exit(-1);
        }
 
        cfi_command(bank, 0x50, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+       target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
-u8 cfi_intel_wait_status_busy(flash_bank_t *bank, int timeout)
+uint8_t cfi_intel_wait_status_busy(flash_bank_t *bank, int timeout)
 {
-       u8 status;
+       uint8_t status;
 
        while ((!((status = cfi_get_u8(bank, 0, 0x0)) & 0x80)) && (timeout-- > 0))
        {
-               DEBUG("status: 0x%x", status);
-               usleep(1000);
+               LOG_DEBUG("status: 0x%x", status);
+               alive_sleep(1);
        }
 
        /* mask out bit 0 (reserved) */
        status = status & 0xfe;
 
-       DEBUG("status: 0x%x", status);
+       LOG_DEBUG("status: 0x%x", status);
 
        if ((status & 0x80) != 0x80)
        {
-               ERROR("timeout while waiting for WSM to become ready");
+               LOG_ERROR("timeout while waiting for WSM to become ready");
        }
        else if (status != 0x80)
        {
-               ERROR("status register: 0x%x", status);
+               LOG_ERROR("status register: 0x%x", status);
                if (status & 0x2)
-                       ERROR("Block Lock-Bit Detected, Operation Abort");
+                       LOG_ERROR("Block Lock-Bit Detected, Operation Abort");
                if (status & 0x4)
-                       ERROR("Program suspended");
+                       LOG_ERROR("Program suspended");
                if (status & 0x8)
-                       ERROR("Low Programming Voltage Detected, Operation Aborted");
+                       LOG_ERROR("Low Programming Voltage Detected, Operation Aborted");
                if (status & 0x10)
-                       ERROR("Program Error / Error in Setting Lock-Bit");
+                       LOG_ERROR("Program Error / Error in Setting Lock-Bit");
                if (status & 0x20)
-                       ERROR("Error in Block Erasure or Clear Lock-Bits");
+                       LOG_ERROR("Error in Block Erasure or Clear Lock-Bits");
                if (status & 0x40)
-                       ERROR("Block Erase Suspended");
+                       LOG_ERROR("Block Erase Suspended");
 
                cfi_intel_clear_status_register(bank);
        }
@@ -303,44 +279,46 @@ u8 cfi_intel_wait_status_busy(flash_bank_t *bank, int timeout)
 
 int cfi_spansion_wait_status_busy(flash_bank_t *bank, int timeout)
 {
-       u8 status, oldstatus;
+       uint8_t status, oldstatus;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
        oldstatus = cfi_get_u8(bank, 0, 0x0);
 
        do {
                status = cfi_get_u8(bank, 0, 0x0);
                if ((status ^ oldstatus) & 0x40) {
-                       if (status & 0x20) {
+                       if (status & cfi_info->status_poll_mask & 0x20) {
                                oldstatus = cfi_get_u8(bank, 0, 0x0);
                                status = cfi_get_u8(bank, 0, 0x0);
                                if ((status ^ oldstatus) & 0x40) {
-                                       ERROR("dq5 timeout, status: 0x%x", status);
+                                       LOG_ERROR("dq5 timeout, status: 0x%x", status);
                                        return(ERROR_FLASH_OPERATION_FAILED);
                                } else {
-                                       DEBUG("status: 0x%x", status);
+                                       LOG_DEBUG("status: 0x%x", status);
                                        return(ERROR_OK);
                                }
                        }
-               } else {
-                       DEBUG("status: 0x%x", status);
+               } else { /* no toggle: finished, OK */
+                       LOG_DEBUG("status: 0x%x", status);
                        return(ERROR_OK);
                }
 
                oldstatus = status;
-               usleep(1000);
+               alive_sleep(1);
        } while (timeout-- > 0);
 
-       ERROR("timeout, status: 0x%x", status);
+       LOG_ERROR("timeout, status: 0x%x", status);
 
        return(ERROR_FLASH_BUSY);
 }
 
-int cfi_read_intel_pri_ext(flash_bank_t *bank)
+static int cfi_read_intel_pri_ext(flash_bank_t *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_intel_pri_ext_t *pri_ext = malloc(sizeof(cfi_intel_pri_ext_t));
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_intel_pri_ext *pri_ext = malloc(sizeof(struct cfi_intel_pri_ext));
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
 
        cfi_info->pri_ext = pri_ext;
 
@@ -351,51 +329,62 @@ int cfi_read_intel_pri_ext(flash_bank_t *bank)
        if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
        {
                cfi_command(bank, 0xf0, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
                cfi_command(bank, 0xff, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               LOG_ERROR("Could not read bank flash bank information");
                return ERROR_FLASH_BANK_INVALID;
        }
 
        pri_ext->major_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 3);
        pri_ext->minor_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 4);
 
-       DEBUG("pri: '%c%c%c', version: %c.%c", pri_ext->pri[0], pri_ext->pri[1], pri_ext->pri[2], pri_ext->major_version, pri_ext->minor_version);
+       LOG_DEBUG("pri: '%c%c%c', version: %c.%c", pri_ext->pri[0], pri_ext->pri[1], pri_ext->pri[2], pri_ext->major_version, pri_ext->minor_version);
 
        pri_ext->feature_support = cfi_query_u32(bank, 0, cfi_info->pri_addr + 5);
        pri_ext->suspend_cmd_support = cfi_query_u8(bank, 0, cfi_info->pri_addr + 9);
        pri_ext->blk_status_reg_mask = cfi_query_u16(bank, 0, cfi_info->pri_addr + 0xa);
 
-       DEBUG("feature_support: 0x%x, suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x", pri_ext->feature_support, pri_ext->suspend_cmd_support, pri_ext->blk_status_reg_mask);
+       LOG_DEBUG("feature_support: 0x%" PRIx32 ", suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x",
+                 pri_ext->feature_support,
+                 pri_ext->suspend_cmd_support,
+                 pri_ext->blk_status_reg_mask);
 
        pri_ext->vcc_optimal = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xc);
        pri_ext->vpp_optimal = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xd);
 
-       DEBUG("Vcc opt: %1.1x.%1.1x, Vpp opt: %1.1x.%1.1x",
+       LOG_DEBUG("Vcc opt: %1.1x.%1.1x, Vpp opt: %1.1x.%1.1x",
                  (pri_ext->vcc_optimal & 0xf0) >> 4, pri_ext->vcc_optimal & 0x0f,
                  (pri_ext->vpp_optimal & 0xf0) >> 4, pri_ext->vpp_optimal & 0x0f);
 
        pri_ext->num_protection_fields = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xe);
        if (pri_ext->num_protection_fields != 1)
        {
-               WARNING("expected one protection register field, but found %i", pri_ext->num_protection_fields);
+               LOG_WARNING("expected one protection register field, but found %i", pri_ext->num_protection_fields);
        }
 
        pri_ext->prot_reg_addr = cfi_query_u16(bank, 0, cfi_info->pri_addr + 0xf);
        pri_ext->fact_prot_reg_size = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0x11);
        pri_ext->user_prot_reg_size = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0x12);
 
-       DEBUG("protection_fields: %i, prot_reg_addr: 0x%x, factory pre-programmed: %i, user programmable: %i", pri_ext->num_protection_fields, pri_ext->prot_reg_addr, 1 << pri_ext->fact_prot_reg_size, 1 << pri_ext->user_prot_reg_size);
+       LOG_DEBUG("protection_fields: %i, prot_reg_addr: 0x%x, factory pre-programmed: %i, user programmable: %i", pri_ext->num_protection_fields, pri_ext->prot_reg_addr, 1 << pri_ext->fact_prot_reg_size, 1 << pri_ext->user_prot_reg_size);
 
        return ERROR_OK;
 }
 
-int cfi_read_spansion_pri_ext(flash_bank_t *bank)
+static int cfi_read_spansion_pri_ext(flash_bank_t *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = malloc(sizeof(cfi_spansion_pri_ext_t));
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = malloc(sizeof(struct cfi_spansion_pri_ext));
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
 
        cfi_info->pri_ext = pri_ext;
 
@@ -406,14 +395,18 @@ int cfi_read_spansion_pri_ext(flash_bank_t *bank)
        if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
        {
                cfi_command(bank, 0xf0, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               LOG_ERROR("Could not read spansion bank information");
                return ERROR_FLASH_BANK_INVALID;
        }
 
        pri_ext->major_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 3);
        pri_ext->minor_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 4);
 
-       DEBUG("pri: '%c%c%c', version: %c.%c", pri_ext->pri[0], pri_ext->pri[1], pri_ext->pri[2], pri_ext->major_version, pri_ext->minor_version);
+       LOG_DEBUG("pri: '%c%c%c', version: %c.%c", pri_ext->pri[0], pri_ext->pri[1], pri_ext->pri[2], pri_ext->major_version, pri_ext->minor_version);
 
        pri_ext->SiliconRevision = cfi_query_u8(bank, 0, cfi_info->pri_addr + 5);
        pri_ext->EraseSuspend    = cfi_query_u8(bank, 0, cfi_info->pri_addr + 6);
@@ -427,20 +420,20 @@ int cfi_read_spansion_pri_ext(flash_bank_t *bank)
        pri_ext->VppMax          = cfi_query_u8(bank, 0, cfi_info->pri_addr + 14);
        pri_ext->TopBottom       = cfi_query_u8(bank, 0, cfi_info->pri_addr + 15);
 
-       DEBUG("Silicon Revision: 0x%x, Erase Suspend: 0x%x, Block protect: 0x%x", pri_ext->SiliconRevision,
+       LOG_DEBUG("Silicon Revision: 0x%x, Erase Suspend: 0x%x, Block protect: 0x%x", pri_ext->SiliconRevision,
              pri_ext->EraseSuspend, pri_ext->BlkProt);
 
-       DEBUG("Temporary Unprotect: 0x%x, Block Protect Scheme: 0x%x, Simultaneous Ops: 0x%x", pri_ext->TmpBlkUnprotect,
+       LOG_DEBUG("Temporary Unprotect: 0x%x, Block Protect Scheme: 0x%x, Simultaneous Ops: 0x%x", pri_ext->TmpBlkUnprotect,
              pri_ext->BlkProtUnprot, pri_ext->SimultaneousOps);
 
-       DEBUG("Burst Mode: 0x%x, Page Mode: 0x%x, ", pri_ext->BurstMode, pri_ext->PageMode);
+       LOG_DEBUG("Burst Mode: 0x%x, Page Mode: 0x%x, ", pri_ext->BurstMode, pri_ext->PageMode);
 
 
-       DEBUG("Vpp min: %2.2d.%1.1d, Vpp max: %2.2d.%1.1x",
+       LOG_DEBUG("Vpp min: %2.2d.%1.1d, Vpp max: %2.2d.%1.1x",
                  (pri_ext->VppMin & 0xf0) >> 4, pri_ext->VppMin & 0x0f,
                  (pri_ext->VppMax & 0xf0) >> 4, pri_ext->VppMax & 0x0f);
 
-       DEBUG("WP# protection 0x%x", pri_ext->TopBottom);
+       LOG_DEBUG("WP# protection 0x%x", pri_ext->TopBottom);
 
        /* default values for implementation specific workarounds */
        pri_ext->_unlock1 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock1;
@@ -450,20 +443,21 @@ int cfi_read_spansion_pri_ext(flash_bank_t *bank)
        return ERROR_OK;
 }
 
-int cfi_read_atmel_pri_ext(flash_bank_t *bank)
+static int cfi_read_atmel_pri_ext(flash_bank_t *bank)
 {
-       cfi_atmel_pri_ext_t atmel_pri_ext;
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = malloc(sizeof(cfi_spansion_pri_ext_t));
+       int retval;
+       struct cfi_atmel_pri_ext atmel_pri_ext;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = malloc(sizeof(struct cfi_spansion_pri_ext));
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
 
        /* ATMEL devices use the same CFI primary command set (0x2) as AMD/Spansion,
         * but a different primary extended query table.
         * We read the atmel table, and prepare a valid AMD/Spansion query table.
         */
 
-       memset(pri_ext, 0, sizeof(cfi_spansion_pri_ext_t));
+       memset(pri_ext, 0, sizeof(struct cfi_spansion_pri_ext));
 
        cfi_info->pri_ext = pri_ext;
 
@@ -474,7 +468,11 @@ int cfi_read_atmel_pri_ext(flash_bank_t *bank)
        if ((atmel_pri_ext.pri[0] != 'P') || (atmel_pri_ext.pri[1] != 'R') || (atmel_pri_ext.pri[2] != 'I'))
        {
                cfi_command(bank, 0xf0, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               LOG_ERROR("Could not read atmel bank information");
                return ERROR_FLASH_BANK_INVALID;
        }
 
@@ -485,7 +483,7 @@ int cfi_read_atmel_pri_ext(flash_bank_t *bank)
        atmel_pri_ext.major_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 3);
        atmel_pri_ext.minor_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 4);
 
-       DEBUG("pri: '%c%c%c', version: %c.%c", atmel_pri_ext.pri[0], atmel_pri_ext.pri[1], atmel_pri_ext.pri[2], atmel_pri_ext.major_version, atmel_pri_ext.minor_version);
+       LOG_DEBUG("pri: '%c%c%c', version: %c.%c", atmel_pri_ext.pri[0], atmel_pri_ext.pri[1], atmel_pri_ext.pri[2], atmel_pri_ext.major_version, atmel_pri_ext.minor_version);
 
        pri_ext->major_version = atmel_pri_ext.major_version;
        pri_ext->minor_version = atmel_pri_ext.minor_version;
@@ -495,7 +493,7 @@ int cfi_read_atmel_pri_ext(flash_bank_t *bank)
        atmel_pri_ext.burst_mode = cfi_query_u8(bank, 0, cfi_info->pri_addr + 7);
        atmel_pri_ext.page_mode = cfi_query_u8(bank, 0, cfi_info->pri_addr + 8);
 
-       DEBUG("features: 0x%2.2x, bottom_boot: 0x%2.2x, burst_mode: 0x%2.2x, page_mode: 0x%2.2x",
+       LOG_DEBUG("features: 0x%2.2x, bottom_boot: 0x%2.2x, burst_mode: 0x%2.2x, page_mode: 0x%2.2x",
                atmel_pri_ext.features, atmel_pri_ext.bottom_boot, atmel_pri_ext.burst_mode, atmel_pri_ext.page_mode);
 
        if (atmel_pri_ext.features & 0x02)
@@ -512,9 +510,9 @@ int cfi_read_atmel_pri_ext(flash_bank_t *bank)
        return ERROR_OK;
 }
 
-int cfi_read_0002_pri_ext(flash_bank_t *bank)
+static int cfi_read_0002_pri_ext(flash_bank_t *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
        if (cfi_info->manufacturer == CFI_MFR_ATMEL)
        {
@@ -526,11 +524,11 @@ int cfi_read_0002_pri_ext(flash_bank_t *bank)
        }
 }
 
-int cfi_spansion_info(struct flash_bank_s *bank, char *buf, int buf_size)
+static int cfi_spansion_info(struct flash_bank_s *bank, char *buf, int buf_size)
 {
        int printed;
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
 
        printed = snprintf(buf, buf_size, "\nSpansion primary algorithm extend information:\n");
        buf += printed;
@@ -561,11 +559,11 @@ int cfi_spansion_info(struct flash_bank_s *bank, char *buf, int buf_size)
        return ERROR_OK;
 }
 
-int cfi_intel_info(struct flash_bank_s *bank, char *buf, int buf_size)
+static int cfi_intel_info(struct flash_bank_s *bank, char *buf, int buf_size)
 {
        int printed;
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
 
        printed = snprintf(buf, buf_size, "\nintel primary algorithm extend information:\n");
        buf += printed;
@@ -575,7 +573,7 @@ int cfi_intel_info(struct flash_bank_s *bank, char *buf, int buf_size)
        buf += printed;
        buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "feature_support: 0x%x, suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x\n", pri_ext->feature_support, pri_ext->suspend_cmd_support, pri_ext->blk_status_reg_mask);
+       printed = snprintf(buf, buf_size, "feature_support: 0x%" PRIx32 ", suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x\n", pri_ext->feature_support, pri_ext->suspend_cmd_support, pri_ext->blk_status_reg_mask);
        buf += printed;
        buf_size -= printed;
 
@@ -590,7 +588,7 @@ int cfi_intel_info(struct flash_bank_s *bank, char *buf, int buf_size)
        return ERROR_OK;
 }
 
-int cfi_register_commands(struct command_context_s *cmd_ctx)
+static int cfi_register_commands(struct command_context_s *cmd_ctx)
 {
        /*command_t *cfi_cmd = */
        register_command(cmd_ctx, NULL, "cfi", NULL, COMMAND_ANY, "flash bank cfi <base> <size> <chip_width> <bus_width> <targetNum> [jedec_probe/x16_as_x8]");
@@ -603,36 +601,38 @@ int cfi_register_commands(struct command_context_s *cmd_ctx)
 
 /* flash_bank cfi <base> <size> <chip_width> <bus_width> <target#> [options]
  */
-int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
+FLASH_BANK_COMMAND_HANDLER(cfi_flash_bank_command)
 {
-       cfi_flash_bank_t *cfi_info;
-       int i;
+       struct cfi_flash_bank *cfi_info;
 
        if (argc < 6)
        {
-               WARNING("incomplete flash_bank cfi configuration");
+               LOG_WARNING("incomplete flash_bank cfi configuration");
                return ERROR_FLASH_BANK_INVALID;
        }
 
-       if ((strtoul(args[4], NULL, 0) > CFI_MAX_CHIP_WIDTH)
-               || (strtoul(args[3], NULL, 0) > CFI_MAX_BUS_WIDTH))
+       uint16_t chip_width, bus_width;
+       COMMAND_PARSE_NUMBER(u16, args[3], bus_width);
+       COMMAND_PARSE_NUMBER(u16, args[4], chip_width);
+
+       if ((chip_width > CFI_MAX_CHIP_WIDTH)
+                       || (bus_width > CFI_MAX_BUS_WIDTH))
        {
-               ERROR("chip and bus width have to specified in bytes");
+               LOG_ERROR("chip and bus width have to specified in bytes");
                return ERROR_FLASH_BANK_INVALID;
        }
 
-       cfi_info = malloc(sizeof(cfi_flash_bank_t));
+       cfi_info = malloc(sizeof(struct cfi_flash_bank));
        cfi_info->probed = 0;
        bank->driver_priv = cfi_info;
 
        cfi_info->write_algorithm = NULL;
-       cfi_info->erase_check_algorithm = NULL;
 
        cfi_info->x16_as_x8 = 0;
        cfi_info->jedec_probe = 0;
        cfi_info->not_cfi = 0;
 
-       for (i = 6; i < argc; i++)
+       for (unsigned i = 6; i < argc; i++)
        {
                if (strcmp(args[i], "x16_as_x8") == 0)
                {
@@ -652,11 +652,12 @@ int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **
        return ERROR_OK;
 }
 
-int cfi_intel_erase(struct flash_bank_s *bank, int first, int last)
+static int cfi_intel_erase(struct flash_bank_s *bank, int first, int last)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
        int i;
 
        cfi_intel_clear_status_register(bank);
@@ -664,81 +665,110 @@ int cfi_intel_erase(struct flash_bank_s *bank, int first, int last)
        for (i = first; i <= last; i++)
        {
                cfi_command(bank, 0x20, command);
-               target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                cfi_command(bank, 0xd0, command);
-               target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->block_erase_timeout_typ)) == 0x80)
                        bank->sectors[i].is_erased = 1;
                else
                {
                        cfi_command(bank, 0xff, command);
-                       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+                       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
 
-                       ERROR("couldn't erase block %i of flash bank at base 0x%x", i, bank->base);
+                       LOG_ERROR("couldn't erase block %i of flash bank at base 0x%" PRIx32 , i, bank->base);
                        return ERROR_FLASH_OPERATION_FAILED;
                }
        }
 
        cfi_command(bank, 0xff, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+       return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 
-       return ERROR_OK;
 }
 
-int cfi_spansion_erase(struct flash_bank_s *bank, int first, int last)
+static int cfi_spansion_erase(struct flash_bank_s *bank, int first, int last)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
        int i;
 
        for (i = first; i <= last; i++)
        {
                cfi_command(bank, 0xaa, command);
-               target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                cfi_command(bank, 0x55, command);
-               target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                cfi_command(bank, 0x80, command);
-               target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                cfi_command(bank, 0xaa, command);
-               target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                cfi_command(bank, 0x55, command);
-               target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                cfi_command(bank, 0x30, command);
-               target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
                if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->block_erase_timeout_typ)) == ERROR_OK)
                        bank->sectors[i].is_erased = 1;
                else
                {
                        cfi_command(bank, 0xf0, command);
-                       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+                       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
 
-                       ERROR("couldn't erase block %i of flash bank at base 0x%x", i, bank->base);
+                       LOG_ERROR("couldn't erase block %i of flash bank at base 0x%" PRIx32, i, bank->base);
                        return ERROR_FLASH_OPERATION_FAILED;
                }
        }
 
        cfi_command(bank, 0xf0, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
-
-       return ERROR_OK;
+       return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
-int cfi_erase(struct flash_bank_s *bank, int first, int last)
+static int cfi_erase(struct flash_bank_s *bank, int first, int last)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -750,7 +780,7 @@ int cfi_erase(struct flash_bank_s *bank, int first, int last)
        if (cfi_info->qry[0] != 'Q')
                return ERROR_FLASH_BANK_NOT_PROBED;
 
-       switch(cfi_info->pri_id)
+       switch (cfi_info->pri_id)
        {
                case 1:
                case 3:
@@ -760,19 +790,20 @@ int cfi_erase(struct flash_bank_s *bank, int first, int last)
                        return cfi_spansion_erase(bank, first, last);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
        }
 
        return ERROR_OK;
 }
 
-int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
+static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
        int retry = 0;
        int i;
 
@@ -787,20 +818,29 @@ int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
        for (i = first; i <= last; i++)
        {
                cfi_command(bank, 0x60, command);
-               DEBUG("address: 0x%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
-               target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+               LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32, flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
+               if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
                if (set)
                {
                        cfi_command(bank, 0x01, command);
-                       DEBUG("address: 0x%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
-                       target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+                       LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32 , flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
+                       if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        bank->sectors[i].is_protected = 1;
                }
                else
                {
                        cfi_command(bank, 0xd0, command);
-                       DEBUG("address: 0x%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
-                       target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+                       LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32, flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
+                       if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        bank->sectors[i].is_protected = 0;
                }
 
@@ -812,17 +852,23 @@ int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
                }
                else
                {
-                       u8 block_status;
+                       uint8_t block_status;
                        /* read block lock bit, to verify status */
                        cfi_command(bank, 0x90, command);
-                       target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command);
+                       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        block_status = cfi_get_u8(bank, i, 0x2);
 
                        if ((block_status & 0x1) != set)
                        {
-                               ERROR("couldn't change block lock status (set = %i, block_status = 0x%2.2x)", set, block_status);
+                               LOG_ERROR("couldn't change block lock status (set = %i, block_status = 0x%2.2x)", set, block_status);
                                cfi_command(bank, 0x70, command);
-                               target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command);
+                               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
+                               {
+                                       return retval;
+                               }
                                cfi_intel_wait_status_busy(bank, 10);
 
                                if (retry > 10)
@@ -848,10 +894,16 @@ int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
                                cfi_intel_clear_status_register(bank);
 
                                cfi_command(bank, 0x60, command);
-                               target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+                               if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                               {
+                                       return retval;
+                               }
 
                                cfi_command(bank, 0x01, command);
-                               target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
+                               if ((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                               {
+                                       return retval;
+                               }
 
                                cfi_intel_wait_status_busy(bank, 100);
                        }
@@ -859,17 +911,16 @@ int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
        }
 
        cfi_command(bank, 0xff, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
-
-       return ERROR_OK;
+       return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
-int cfi_protect(struct flash_bank_s *bank, int set, int first, int last)
+static int cfi_protect(struct flash_bank_s *bank, int set, int first, int last)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -881,14 +932,14 @@ int cfi_protect(struct flash_bank_s *bank, int set, int first, int last)
        if (cfi_info->qry[0] != 'Q')
                return ERROR_FLASH_BANK_NOT_PROBED;
 
-       switch(cfi_info->pri_id)
+       switch (cfi_info->pri_id)
        {
                case 1:
                case 3:
                        cfi_intel_protect(bank, set, first, last);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("protect: cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
        }
 
@@ -896,59 +947,84 @@ int cfi_protect(struct flash_bank_s *bank, int set, int first, int last)
 }
 
 /* FIXME Replace this by a simple memcpy() - still unsure about sideeffects */
-static void cfi_add_byte(struct flash_bank_s *bank, u8 *word, u8 byte)
+static void cfi_add_byte(struct flash_bank_s *bank, uint8_t *word, uint8_t byte)
 {
-       //target_t *target = bank->target;
+       /* target_t *target = bank->target; */
 
        int i;
 
-       // NOTE:
-       // The data to flash must not be changed in endian! We write a bytestrem in
-       // target byte order already. Only the control and status byte lane of the flash
-       // WSM is interpreted by the CPU in different ways, when read a u16 or u32
-       // word (data seems to be in the upper or lower byte lane for u16 accesses).
+       /* NOTE:
+        * The data to flash must not be changed in endian! We write a bytestrem in
+        * target byte order already. Only the control and status byte lane of the flash
+        * WSM is interpreted by the CPU in different ways, when read a uint16_t or uint32_t
+        * word (data seems to be in the upper or lower byte lane for uint16_t accesses).
+        */
 
-       //if (target->endianness == TARGET_LITTLE_ENDIAN)
-       //{
+#if 0
+       if (target->endianness == TARGET_LITTLE_ENDIAN)
+       {
+#endif
                /* shift bytes */
                for (i = 0; i < bank->bus_width - 1; i++)
                        word[i] = word[i + 1];
                word[bank->bus_width - 1] = byte;
-       //}
-       //else
-       //{
-       //      /* shift bytes */
-       //      for (i = bank->bus_width - 1; i > 0; i--)
-       //              word[i] = word[i - 1];
-       //      word[0] = byte;
-       //}
+#if 0
+       }
+       else
+       {
+               /* shift bytes */
+               for (i = bank->bus_width - 1; i > 0; i--)
+                       word[i] = word[i - 1];
+               word[0] = byte;
+       }
+#endif
 }
 
 /* Convert code image to target endian */
-/* FIXME create general block conversion fcts in target.c?) */ static
-void cfi_fix_code_endian(target_t *target, u32 *dest, const u32 *src, u32 count)
+/* FIXME create general block conversion fcts in target.c?) */
+static void cfi_fix_code_endian(target_t *target, uint8_t *dest, const uint32_t *src, uint32_t count)
 {
-       u32 i;
-       for (i=0; i< count; i++)
+       uint32_t i;
+       for (i = 0; i< count; i++)
        {
-               target_buffer_set_u32(target, (u8*)dest, *src);
-               dest++;
+               target_buffer_set_u32(target, dest, *src);
+               dest += 4;
                src++;
        }
 }
 
-int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u32 count)
+static uint32_t cfi_command_val(flash_bank_t *bank, uint8_t cmd)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
-       reg_param_t reg_params[7];
-       armv4_5_algorithm_t armv4_5_info;
+
+       uint8_t buf[CFI_MAX_BUS_WIDTH];
+       cfi_command(bank, cmd, buf);
+       switch (bank->bus_width)
+       {
+       case 1 :
+               return buf[0];
+               break;
+       case 2 :
+               return target_buffer_get_u16(target, buf);
+               break;
+       case 4 :
+               return target_buffer_get_u32(target, buf);
+               break;
+       default :
+               LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
+               return 0;
+       }
+}
+
+static int cfi_intel_write_block(struct flash_bank_s *bank, uint8_t *buffer, uint32_t address, uint32_t count)
+{
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       target_t *target = bank->target;
+       struct reg_param reg_params[7];
+       struct armv4_5_algorithm armv4_5_info;
        working_area_t *source;
-       u32 buffer_size = 32768;
-       u8 write_command_buf[CFI_MAX_BUS_WIDTH];
-       u8 busy_pattern_buf[CFI_MAX_BUS_WIDTH];
-       u8 error_pattern_buf[CFI_MAX_BUS_WIDTH];
-       u32 write_command_val, busy_pattern_val, error_pattern_val;
+       uint32_t buffer_size = 32768;
+       uint32_t write_command_val, busy_pattern_val, error_pattern_val;
 
        /* algorithm register usage:
         * r0: source address (in RAM)
@@ -960,7 +1036,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
         * r6: error test pattern
         */
 
-       static const u32 word_32_code[] = {
+       static const uint32_t word_32_code[] = {
                0xe4904004,   /* loop:  ldr r4, [r0], #4 */
                0xe5813000,   /*                str r3, [r1] */
                0xe5814000,   /*                str r4, [r1] */
@@ -977,7 +1053,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                0xeafffffe    /* done:  b -2 */
        };
 
-       static const u32 word_16_code[] = {
+       static const uint32_t word_16_code[] = {
                0xe0d040b2,   /* loop:  ldrh r4, [r0], #2 */
                0xe1c130b0,   /*                strh r3, [r1] */
                0xe1c140b0,   /*                strh r4, [r1] */
@@ -994,7 +1070,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                0xeafffffe    /* done:  b -2 */
        };
 
-       static const u32 word_8_code[] = {
+       static const uint32_t word_8_code[] = {
                0xe4d04001,   /* loop:  ldrb r4, [r0], #1 */
                0xe5c13000,   /*                strb r3, [r1] */
                0xe5c14000,   /*                strb r4, [r1] */
@@ -1010,9 +1086,9 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                0xeafffff2,   /*                b loop */
                0xeafffffe    /* done:  b -2 */
        };
-       u32 target_code[CFI_MAX_INTEL_CODESIZE];
-       const u32 *target_code_src;
-       int target_code_size;
+       uint8_t target_code[4*CFI_MAX_INTEL_CODESIZE];
+       const uint32_t *target_code_src;
+       uint32_t target_code_size;
        int retval = ERROR_OK;
 
 
@@ -1023,11 +1099,11 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
        armv4_5_info.core_state = ARMV4_5_STATE_ARM;
 
        /* If we are setting up the write_algorith, we need target_code_src */
-       /* if not we only need target_code_size.                                                                                                                */
-       /*                                                                                                                                                                                                                                                                      */
-       /* However, we don't want to create multiple code paths, so we                  */
-       /* do the unecessary evaluation of target_code_src, which the                   */
-       /* compiler will probably nicely optimize away if not needed                            */
+       /* if not we only need target_code_size. */
+
+       /* However, we don't want to create multiple code paths, so we */
+       /* do the unecessary evaluation of target_code_src, which the */
+       /* compiler will probably nicely optimize away if not needed */
 
        /* prepare algorithm code for target endian */
        switch (bank->bus_width)
@@ -1045,33 +1121,33 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                target_code_size = sizeof(word_32_code);
                break;
        default:
-               ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
+               LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
                return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
 
        /* flash write code */
        if (!cfi_info->write_algorithm)
        {
-               if ( target_code_size > sizeof(target_code) )
+               if (target_code_size > sizeof(target_code))
                {
-                       WARNING("Internal error - target code buffer to small. Increase CFI_MAX_INTEL_CODESIZE and recompile.");
+                       LOG_WARNING("Internal error - target code buffer to small. Increase CFI_MAX_INTEL_CODESIZE and recompile.");
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
                }
-               cfi_fix_code_endian(target, target_code, target_code_src, target_code_size);
+               cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
 
                /* Get memory for block write handler */
                retval = target_alloc_working_area(target, target_code_size, &cfi_info->write_algorithm);
                if (retval != ERROR_OK)
                {
-                       WARNING("No working area available, can't do block memory writes");
+                       LOG_WARNING("No working area available, can't do block memory writes");
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
                };
 
                /* write algorithm code to working area */
-               retval = target_write_buffer(target, cfi_info->write_algorithm->address, target_code_size, (u8*)target_code);
+               retval = target_write_buffer(target, cfi_info->write_algorithm->address, target_code_size, target_code);
                if (retval != ERROR_OK)
                {
-                       ERROR("Unable to write block write code to target");
+                       LOG_ERROR("Unable to write block write code to target");
                        goto cleanup;
                }
        }
@@ -1084,7 +1160,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                buffer_size /= 2;
                if (buffer_size <= 256)
                {
-                       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");
                        retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
                        goto cleanup;
                }
@@ -1100,42 +1176,22 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
        init_reg_param(&reg_params[6], "r6", 32, PARAM_OUT);
 
        /* prepare command and status register patterns */
-       cfi_command(bank, 0x40, write_command_buf);
-       cfi_command(bank, 0x80, busy_pattern_buf);
-       cfi_command(bank, 0x7e, error_pattern_buf);
-
-       switch (bank->bus_width)
-       {
-       case 1 :
-               write_command_val = write_command_buf[0];
-               busy_pattern_val = busy_pattern_buf[0];
-               error_pattern_val = error_pattern_buf[0];
-               break;
-       case 2 :
-               write_command_val = target_buffer_get_u16(target, write_command_buf);
-               busy_pattern_val = target_buffer_get_u16(target, busy_pattern_buf);
-               error_pattern_val = target_buffer_get_u16(target, error_pattern_buf);
-               break;
-       case 4 :
-               write_command_val = target_buffer_get_u32(target, write_command_buf);
-               busy_pattern_val = target_buffer_get_u32(target, busy_pattern_buf);
-               error_pattern_val = target_buffer_get_u32(target, error_pattern_buf);
-               break;
-       default :
-               ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
-               retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
-               goto cleanup;
-       }
+       write_command_val = cfi_command_val(bank, 0x40);
+       busy_pattern_val  = cfi_command_val(bank, 0x80);
+       error_pattern_val = cfi_command_val(bank, 0x7e);
 
-       INFO("Using target buffer at 0x%08x and of size 0x%04x", source->address, buffer_size );
+       LOG_INFO("Using target buffer at 0x%08" PRIx32 " and of size 0x%04" PRIx32, source->address, buffer_size);
 
        /* Programming main loop */
        while (count > 0)
        {
-               u32 thisrun_count = (count > buffer_size) ? buffer_size : count;
-               u32 wsm_error;
+               uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
+               uint32_t wsm_error;
 
-               target_write_buffer(target, source->address, thisrun_count, buffer);
+               if ((retval = target_write_buffer(target, source->address, thisrun_count, buffer)) != ERROR_OK)
+               {
+                       goto cleanup;
+               }
 
                buf_set_u32(reg_params[0].value, 0, 32, source->address);
                buf_set_u32(reg_params[1].value, 0, 32, address);
@@ -1145,12 +1201,12 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                buf_set_u32(reg_params[5].value, 0, 32, busy_pattern_val);
                buf_set_u32(reg_params[6].value, 0, 32, error_pattern_val);
 
-               INFO("Write 0x%04x bytes to flash at 0x%08x", thisrun_count, address );
+               LOG_INFO("Write 0x%04" PRIx32 " bytes to flash at 0x%08" PRIx32 , thisrun_count, address);
 
                /* Execute algorithm, assume breakpoint for last instruction */
-               retval = target->type->run_algorithm(target, 0, NULL, 7, reg_params,
+               retval = target_run_algorithm(target, 0, NULL, 7, reg_params,
                        cfi_info->write_algorithm->address,
-                       cfi_info->write_algorithm->address + target_code_size - sizeof(u32),
+                       cfi_info->write_algorithm->address + target_code_size - sizeof(uint32_t),
                        10000, /* 10s should be enough for max. 32k of data */
                        &armv4_5_info);
 
@@ -1158,11 +1214,11 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                if (retval != ERROR_OK)
                {
                        cfi_intel_clear_status_register(bank);
-                       ERROR("Execution of flash algorythm failed. Can't fall back. Please report.");
+                       LOG_ERROR("Execution of flash algorythm failed. Can't fall back. Please report.");
                        retval = ERROR_FLASH_OPERATION_FAILED;
-                       //retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
-                       // FIXME To allow fall back or recovery, we must save the actual status
-                       //       somewhere, so that a higher level code can start recovery.
+                       /* retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE; */
+                       /* FIXME To allow fall back or recovery, we must save the actual status
+                          somewhere, so that a higher level code can start recovery. */
                        goto cleanup;
                }
 
@@ -1204,19 +1260,17 @@ cleanup:
        return retval;
 }
 
-int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u32 count)
+static int cfi_spansion_write_block(struct flash_bank_s *bank, uint8_t *buffer, uint32_t address, uint32_t count)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
-       reg_param_t reg_params[10];
-       armv4_5_algorithm_t armv4_5_info;
+       struct reg_param reg_params[10];
+       struct armv4_5_algorithm armv4_5_info;
        working_area_t *source;
-       u32 buffer_size = 32768;
-       u8 write_command[CFI_MAX_BUS_WIDTH];
-       u32 status;
-       int i;
-       int retval;
+       uint32_t buffer_size = 32768;
+       uint32_t status;
+       int retval, retvaltemp;
        int exit_code = ERROR_OK;
 
        /* input parameters - */
@@ -1236,7 +1290,7 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
        /*  R10 = unlock2_addr */
        /*  R11 = unlock2_cmd */
 
-       u32 word_32_code[] = {
+       static const uint32_t word_32_code[] = {
                                                /* 00008100 <sp_32_code>:               */
                0xe4905004,             /* ldr  r5, [r0], #4                    */
                0xe5889000,     /* str  r9, [r8]                                */
@@ -1270,7 +1324,7 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
                0xeafffffe              /* b    8154 <sp_32_done>               */
                };
 
-               u32 word_16_code[] = {
+               static const uint32_t word_16_code[] = {
                                /* 00008158 <sp_16_code>:              */
                0xe0d050b2,     /* ldrh r5, [r0], #2               */
                0xe1c890b0,     /* strh r9, [r8]                                */
@@ -1304,7 +1358,32 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
                0xeafffffe      /* b    81ac <sp_16_done>              */
                };
 
-               u32 word_8_code[] = {
+               static const uint32_t word_16_code_dq7only[] = {
+                               /* <sp_16_code>:                       */
+               0xe0d050b2,     /* ldrh r5, [r0], #2                   */
+               0xe1c890b0,     /* strh r9, [r8]                       */
+               0xe1cab0b0,     /* strh r11, [r10]                              */
+               0xe1c830b0,     /* strh r3, [r8]                                */
+               0xe1c150b0,     /* strh r5, [r1]                       */
+               0xe1a00000,     /* nop                  (mov r0,r0)    */
+                               /*                                     */
+                               /* <sp_16_busy>:                       */
+               0xe1d160b0,     /* ldrh r6, [r1]                       */
+               0xe0257006,     /* eor  r7, r5, r6                     */
+               0xe2177080,     /* ands r7, #0x80                      */
+               0x1afffffb,     /* bne  8168 <sp_16_busy>              */
+                               /*                                     */
+               0xe2522001,     /* subs r2, r2, #1      ; 0x1          */
+               0x03a05080,     /* moveq        r5, #128        ; 0x80 */
+               0x0a000001,     /* beq  81ac <sp_16_done>              */
+               0xe2811002,     /* add  r1, r1, #2      ; 0x2          */
+               0xeafffff0,     /* b    8158 <sp_16_code>              */
+                               /*                                     */
+                               /* 000081ac <sp_16_done>:              */
+               0xeafffffe      /* b    81ac <sp_16_done>              */
+               };
+
+               static const uint32_t word_8_code[] = {
                                /* 000081b0 <sp_16_code_end>:          */
                0xe4d05001,     /* ldrb r5, [r0], #1                   */
                0xe5c89000,     /* strb r9, [r8]                                */
@@ -1342,51 +1421,67 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
        armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
        armv4_5_info.core_state = ARMV4_5_STATE_ARM;
 
-       /* flash write code */
-       if (!cfi_info->write_algorithm)
-       {
-               u8 *code_p;
-
-               /* convert bus-width dependent algorithm code to correct endiannes */
-               if (bank->bus_width == 1)
-               {
-                       code_p = malloc(24 * 4);
-
-                       for (i = 0; i < 24; i++)
-                               target_buffer_set_u32(target, code_p + (i*4), word_8_code[i]);
-               }
-               else if (bank->bus_width == 2)
-               {
-                       code_p = malloc(24 * 4);
+       int target_code_size;
+       const uint32_t *target_code_src;
 
-                       for (i = 0; i < 24; i++)
-                               target_buffer_set_u32(target, code_p + (i*4), word_16_code[i]);
-               }
-               else if (bank->bus_width == 4)
+       switch (bank->bus_width)
+       {
+       case 1 :
+               target_code_src = word_8_code;
+               target_code_size = sizeof(word_8_code);
+               break;
+       case 2 :
+               /* Check for DQ5 support */
+               if( cfi_info->status_poll_mask & (1 << 5) )
                {
-                       code_p = malloc(24 * 4);
-
-                       for (i = 0; i < 24; i++)
-                               target_buffer_set_u32(target, code_p + (i*4), word_32_code[i]);
+                       target_code_src = word_16_code;
+                       target_code_size = sizeof(word_16_code);
                }
                else
                {
-                       return ERROR_FLASH_OPERATION_FAILED;
+                       /* No DQ5 support. Use DQ7 DATA# polling only. */
+                       target_code_src = word_16_code_dq7only;
+                       target_code_size = sizeof(word_16_code_dq7only);
                }
+               break;
+       case 4 :
+               target_code_src = word_32_code;
+               target_code_size = sizeof(word_32_code);
+               break;
+       default:
+               LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
+               return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+       }
+
+       /* flash write code */
+       if (!cfi_info->write_algorithm)
+       {
+               uint8_t *target_code;
+
+               /* convert bus-width dependent algorithm code to correct endiannes */
+               target_code = malloc(target_code_size);
+               cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
 
                /* allocate working area */
-               retval=target_alloc_working_area(target, 24 * 4,
+               retval = target_alloc_working_area(target, target_code_size,
                                &cfi_info->write_algorithm);
                if (retval != ERROR_OK)
                {
+                       free(target_code);
                        return retval;
                }
 
                /* write algorithm code to working area */
-               target_write_buffer(target, cfi_info->write_algorithm->address, 24 * 4, code_p);
+               if ((retval = target_write_buffer(target, cfi_info->write_algorithm->address,
+                                   target_code_size, target_code)) != ERROR_OK)
+               {
+                       free(target_code);
+                       return retval;
+               }
 
-               free(code_p);
+               free(target_code);
        }
+       /* the following code still assumes target code is fixed 24*4 bytes */
 
        while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
        {
@@ -1397,7 +1492,7 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
                        if (cfi_info->write_algorithm)
                                target_free_working_area(target, cfi_info->write_algorithm);
 
-                       WARNING("not enough working area available, can't do block memory writes");
+                       LOG_WARNING("not enough working area available, can't do block memory writes");
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
                }
        };
@@ -1415,32 +1510,30 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
 
        while (count > 0)
        {
-               u32 thisrun_count = (count > buffer_size) ? buffer_size : count;
+               uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
 
-               target_write_buffer(target, source->address, thisrun_count, buffer);
+               retvaltemp = target_write_buffer(target, source->address, thisrun_count, 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, thisrun_count / bank->bus_width);
-               cfi_command(bank, 0xA0, write_command);
-               buf_set_u32(reg_params[3].value, 0, 32, buf_get_u32(write_command, 0, 32));
-               cfi_command(bank, 0x80, write_command);
-               buf_set_u32(reg_params[4].value, 0, 32, buf_get_u32(write_command, 0, 32));
+               buf_set_u32(reg_params[3].value, 0, 32, cfi_command_val(bank, 0xA0));
+               buf_set_u32(reg_params[4].value, 0, 32, cfi_command_val(bank, 0x80));
                buf_set_u32(reg_params[6].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock1));
-               buf_set_u32(reg_params[7].value, 0, 32, 0xaa);
+               buf_set_u32(reg_params[7].value, 0, 32, 0xaaaaaaaa);
                buf_set_u32(reg_params[8].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock2));
-               buf_set_u32(reg_params[9].value, 0, 32, 0x55);
+               buf_set_u32(reg_params[9].value, 0, 32, 0x55555555);
 
-               retval = target->type->run_algorithm(target, 0, NULL, 10, reg_params,
+               retval = target_run_algorithm(target, 0, NULL, 10, reg_params,
                                                     cfi_info->write_algorithm->address,
-                                                    cfi_info->write_algorithm->address + ((24 * 4) - 4),
+                                                    cfi_info->write_algorithm->address + ((target_code_size) - 4),
                                                     10000, &armv4_5_info);
 
                status = buf_get_u32(reg_params[5].value, 0, 32);
 
-               if ((retval != ERROR_OK) || status != 0x80)
+               if ((retval != ERROR_OK) || (retvaltemp != ERROR_OK) || status != 0x80)
                {
-                       DEBUG("status: 0x%x", status);
+                       LOG_DEBUG("status: 0x%" PRIx32 , status);
                        exit_code = ERROR_FLASH_OPERATION_FAILED;
                        break;
                }
@@ -1450,7 +1543,7 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
                count -= thisrun_count;
        }
 
-       target_free_working_area(target, source);
+       target_free_all_working_areas(target);
 
        destroy_reg_param(&reg_params[0]);
        destroy_reg_param(&reg_params[1]);
@@ -1466,61 +1559,76 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
        return exit_code;
 }
 
-int cfi_intel_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
+static int cfi_intel_write_word(struct flash_bank_s *bank, uint8_t *word, uint32_t address)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
 
        cfi_intel_clear_status_register(bank);
        cfi_command(bank, 0x40, command);
-       target->type->write_memory(target, address, bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
-       target->type->write_memory(target, address, bank->bus_width, 1, word);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != 0x80)
        {
                cfi_command(bank, 0xff, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
-               ERROR("couldn't write word at base 0x%x, address %x", bank->base, address);
+               LOG_ERROR("couldn't write word at base 0x%" PRIx32 ", address %" PRIx32 , bank->base, address);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
        return ERROR_OK;
 }
 
-int cfi_intel_write_words(struct flash_bank_s *bank, u8 *word, u32 wordcount, u32 address)
+static int cfi_intel_write_words(struct flash_bank_s *bank, uint8_t *word, uint32_t wordcount, uint32_t address)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
 
        /* Calculate buffer size and boundary mask */
-       u32 buffersize = 1UL << cfi_info->max_buf_write_size;
-       u32 buffermask = buffersize-1;
-       u32 bufferwsize;
+       uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
+       uint32_t buffermask = buffersize-1;
+       uint32_t bufferwsize;
 
        /* Check for valid range */
        if (address & buffermask)
        {
-               ERROR("Write address at base 0x%x, address %x not aligned to 2^%d boundary", bank->base, address, cfi_info->max_buf_write_size);
+               LOG_ERROR("Write address at base 0x%" PRIx32 ", address %" PRIx32 " not aligned to 2^%d boundary",
+                         bank->base, address, cfi_info->max_buf_write_size);
                return ERROR_FLASH_OPERATION_FAILED;
        }
-       switch(bank->chip_width)
+       switch (bank->chip_width)
        {
        case 4 : bufferwsize = buffersize / 4; break;
        case 2 : bufferwsize = buffersize / 2; break;
        case 1 : bufferwsize = buffersize; break;
        default:
-               ERROR("Unsupported chip width %d", bank->chip_width);
+               LOG_ERROR("Unsupported chip width %d", bank->chip_width);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
+       bufferwsize/=(bank->bus_width / bank->chip_width);
+
+
        /* Check for valid size */
        if (wordcount > bufferwsize)
        {
-               ERROR("Number of data words %d exceeds available buffersize %d", wordcount, buffersize);
+               LOG_ERROR("Number of data words %" PRId32 " exceeds available buffersize %" PRId32 , wordcount, buffersize);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
@@ -1529,72 +1637,198 @@ int cfi_intel_write_words(struct flash_bank_s *bank, u8 *word, u32 wordcount, u3
 
        /* Initiate buffer operation _*/
        cfi_command(bank, 0xE8, command);
-       target->type->write_memory(target, address, bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
        if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->buf_write_timeout_max)) != 0x80)
        {
                cfi_command(bank, 0xff, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
-               ERROR("couldn't start buffer write operation at base 0x%x, address %x", bank->base, address);
+               LOG_ERROR("couldn't start buffer write operation at base 0x%" PRIx32 ", address %" PRIx32 , bank->base, address);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
        /* Write buffer wordcount-1 and data words */
        cfi_command(bank, bufferwsize-1, command);
-       target->type->write_memory(target, address, bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
-       target->type->write_memory(target, address, bank->bus_width, bufferwsize, word);
+       if ((retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        /* Commit write operation */
        cfi_command(bank, 0xd0, command);
-       target->type->write_memory(target, address, bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
        if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->buf_write_timeout_max)) != 0x80)
        {
                cfi_command(bank, 0xff, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
-               ERROR("Buffer write at base 0x%x, address %x failed.", bank->base, address);
+               LOG_ERROR("Buffer write at base 0x%" PRIx32 ", address %" PRIx32 " failed.", bank->base, address);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
        return ERROR_OK;
 }
 
-int cfi_spansion_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
+static int cfi_spansion_write_word(struct flash_bank_s *bank, uint8_t *word, uint32_t address)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
 
        cfi_command(bank, 0xaa, command);
-       target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        cfi_command(bank, 0x55, command);
-       target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        cfi_command(bank, 0xa0, command);
-       target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
-       target->type->write_memory(target, address, bank->bus_width, 1, word);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != ERROR_OK)
        {
                cfi_command(bank, 0xf0, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
 
-               ERROR("couldn't write word at base 0x%x, address %x", bank->base, address);
+               LOG_ERROR("couldn't write word at base 0x%" PRIx32 ", address %" PRIx32 , bank->base, address);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
        return ERROR_OK;
 }
 
-int cfi_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
+static int cfi_spansion_write_words(struct flash_bank_s *bank, uint8_t *word, uint32_t wordcount, uint32_t address)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       target_t *target = bank->target;
+       uint8_t command[8];
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
+
+       /* Calculate buffer size and boundary mask */
+       uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
+       uint32_t buffermask = buffersize-1;
+       uint32_t bufferwsize;
 
-       switch(cfi_info->pri_id)
+       /* Check for valid range */
+       if (address & buffermask)
+       {
+               LOG_ERROR("Write address at base 0x%" PRIx32 ", address %" PRIx32 " not aligned to 2^%d boundary", bank->base, address, cfi_info->max_buf_write_size);
+               return ERROR_FLASH_OPERATION_FAILED;
+       }
+       switch (bank->chip_width)
+       {
+       case 4 : bufferwsize = buffersize / 4; break;
+       case 2 : bufferwsize = buffersize / 2; break;
+       case 1 : bufferwsize = buffersize; break;
+       default:
+               LOG_ERROR("Unsupported chip width %d", bank->chip_width);
+               return ERROR_FLASH_OPERATION_FAILED;
+       }
+
+       bufferwsize/=(bank->bus_width / bank->chip_width);
+
+       /* Check for valid size */
+       if (wordcount > bufferwsize)
+       {
+               LOG_ERROR("Number of data words %" PRId32 " exceeds available buffersize %" PRId32, wordcount, buffersize);
+               return ERROR_FLASH_OPERATION_FAILED;
+       }
+
+       // Unlock
+       cfi_command(bank, 0xaa, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       cfi_command(bank, 0x55, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       // Buffer load command
+       cfi_command(bank, 0x25, command);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       /* Write buffer wordcount-1 and data words */
+       cfi_command(bank, bufferwsize-1, command);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       if ((retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       /* Commit write operation */
+       cfi_command(bank, 0x29, command);
+       if ((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != ERROR_OK)
+       {
+               cfi_command(bank, 0xf0, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
+
+               LOG_ERROR("couldn't write block at base 0x%" PRIx32 ", address %" PRIx32 ", size %" PRIx32 , bank->base, address, bufferwsize);
+               return ERROR_FLASH_OPERATION_FAILED;
+       }
+
+       return ERROR_OK;
+}
+
+static int cfi_write_word(struct flash_bank_s *bank, uint8_t *word, uint32_t address)
+{
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+
+       switch (cfi_info->pri_id)
        {
                case 1:
                case 3:
@@ -1604,47 +1838,52 @@ int cfi_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
                        return cfi_spansion_write_word(bank, word, address);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
        }
 
        return ERROR_FLASH_OPERATION_FAILED;
 }
 
-int cfi_write_words(struct flash_bank_s *bank, u8 *word, u32 wordcount, u32 address)
+static int cfi_write_words(struct flash_bank_s *bank, uint8_t *word, uint32_t wordcount, uint32_t address)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
-       switch(cfi_info->pri_id)
+       switch (cfi_info->pri_id)
        {
                case 1:
                case 3:
                        return cfi_intel_write_words(bank, word, wordcount, address);
                        break;
                case 2:
-                       //return cfi_spansion_write_words(bank, word, address);
-                       ERROR("cfi primary command set %i unimplemented - FIXME", cfi_info->pri_id);
+                       return cfi_spansion_write_words(bank, word, wordcount, address);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
        }
 
        return ERROR_FLASH_OPERATION_FAILED;
 }
 
-int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+int cfi_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
-       u32 address = bank->base + offset;      /* address of first byte to be programmed */
-       u32 write_p, copy_p;
+       uint32_t address = bank->base + offset; /* address of first byte to be programmed */
+       uint32_t write_p, copy_p;
        int align;      /* number of unaligned bytes */
        int blk_count; /* number of bus_width bytes for block copy */
-       u8 current_word[CFI_MAX_BUS_WIDTH * 4]; /* word (bus_width size) currently being programmed */
+       uint8_t current_word[CFI_MAX_BUS_WIDTH * 4];    /* word (bus_width size) currently being programmed */
        int i;
        int retval;
 
+       if (bank->target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
        if (offset + count > bank->size)
                return ERROR_FLASH_DST_OUT_OF_BANK;
 
@@ -1655,7 +1894,7 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
        write_p = address & ~(bank->bus_width - 1);
        if ((align = address - write_p) != 0)
        {
-               INFO("Fixup %d unaligned head bytes", align );
+               LOG_INFO("Fixup %d unaligned head bytes", align);
 
                for (i = 0; i < bank->bus_width; i++)
                        current_word[i] = 0;
@@ -1664,8 +1903,11 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                /* copy bytes before the first write address */
                for (i = 0; i < align; ++i, ++copy_p)
                {
-                       u8 byte;
-                       target->type->read_memory(target, copy_p, 1, 1, &byte);
+                       uint8_t byte;
+                       if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        cfi_add_byte(bank, current_word, byte);
                }
 
@@ -1680,8 +1922,11 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                /* if the buffer is already finished, copy bytes after the last write address */
                for (; (count == 0) && (i < bank->bus_width); ++i, ++copy_p)
                {
-                       u8 byte;
-                       target->type->read_memory(target, copy_p, 1, 1, &byte);
+                       uint8_t byte;
+                       if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        cfi_add_byte(bank, current_word, byte);
                }
 
@@ -1693,7 +1938,7 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 
        /* handle blocks of bus_size aligned bytes */
        blk_count = count & ~(bank->bus_width - 1); /* round down, leave tail bytes */
-       switch(cfi_info->pri_id)
+       switch (cfi_info->pri_id)
        {
                /* try block writes (fails without working area) */
                case 1:
@@ -1704,7 +1949,7 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                        retval = cfi_spansion_write_block(bank, buffer, write_p, blk_count);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        retval = ERROR_FLASH_OPERATION_FAILED;
                        break;
        }
@@ -1719,41 +1964,45 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
        {
                if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
                {
-                       u32 buffersize = 1UL << cfi_info->max_buf_write_size;
-                       u32 buffermask = buffersize-1;
-                       u32 bufferwsize;
+                       //adjust buffersize for chip width
+                       uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
+                       uint32_t buffermask = buffersize-1;
+                       uint32_t bufferwsize;
 
-                       switch(bank->chip_width)
+                       switch (bank->chip_width)
                        {
                        case 4 : bufferwsize = buffersize / 4; break;
                        case 2 : bufferwsize = buffersize / 2; break;
                        case 1 : bufferwsize = buffersize; break;
                        default:
-                               ERROR("Unsupported chip width %d", bank->chip_width);
+                               LOG_ERROR("Unsupported chip width %d", bank->chip_width);
                                return ERROR_FLASH_OPERATION_FAILED;
                        }
 
+                       bufferwsize/=(bank->bus_width / bank->chip_width);
+
                        /* fall back to memory writes */
-                       while (count > bank->bus_width)
+                       while (count >= (uint32_t)bank->bus_width)
                        {
+                               int fallback;
                                if ((write_p & 0xff) == 0)
                                {
-                                       INFO("Programming at %08x, count %08x bytes remaining", write_p, count);
+                                       LOG_INFO("Programming at %08" PRIx32 ", count %08" PRIx32 " bytes remaining", write_p, count);
                                }
-#if 0
-                               /* NB! this is broken for spansion! */
-                               if ((count > bufferwsize) && !(write_p & buffermask))
+                               fallback = 1;
+                               if ((bufferwsize > 0) && (count >= buffersize) && !(write_p & buffermask))
                                {
                                        retval = cfi_write_words(bank, buffer, bufferwsize, write_p);
-                                       if (retval != ERROR_OK)
-                                               return retval;
-
-                                       buffer += buffersize;
-                                       write_p += buffersize;
-                                       count -= buffersize;
+                                       if (retval == ERROR_OK)
+                                       {
+                                               buffer += buffersize;
+                                               write_p += buffersize;
+                                               count -= buffersize;
+                                               fallback = 0;
+                                       }
                                }
-                               else
-#endif
+                               /* try the slow way? */
+                               if (fallback)
                                {
                                        for (i = 0; i < bank->bus_width; i++)
                                                current_word[i] = 0;
@@ -1778,14 +2027,20 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 
        /* return to read array mode, so we can read from flash again for padding */
        cfi_command(bank, 0xf0, current_word);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
+       {
+               return retval;
+       }
        cfi_command(bank, 0xff, current_word);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        /* handle unaligned tail bytes */
        if (count > 0)
        {
-               INFO("Fixup %d unaligned tail bytes", count );
+               LOG_INFO("Fixup %" PRId32 " unaligned tail bytes", count);
 
                copy_p = write_p;
                for (i = 0; i < bank->bus_width; i++)
@@ -1798,8 +2053,11 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                }
                for (; i < bank->bus_width; ++i, ++copy_p)
                {
-                       u8 byte;
-                       target->type->read_memory(target, copy_p, 1, 1, &byte);
+                       uint8_t byte;
+                       if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        cfi_add_byte(bank, current_word, byte);
                }
                retval = cfi_write_word(bank, current_word, write_p);
@@ -1809,35 +2067,38 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 
        /* return to read array mode */
        cfi_command(bank, 0xf0, current_word);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
+       {
+               return retval;
+       }
        cfi_command(bank, 0xff, current_word);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
-
-       return ERROR_OK;
+       return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
 }
 
-void cfi_fixup_atmel_reversed_erase_regions(flash_bank_t *bank, void *param)
+static void cfi_fixup_atmel_reversed_erase_regions(flash_bank_t *bank, void *param)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       (void) param;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
 
        pri_ext->_reversed_geometry = 1;
 }
 
-void cfi_fixup_0002_erase_regions(flash_bank_t *bank, void *param)
+static void cfi_fixup_0002_erase_regions(flash_bank_t *bank, void *param)
 {
        int i;
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
+       (void) param;
 
        if ((pri_ext->_reversed_geometry) || (pri_ext->TopBottom == 3))
        {
-               DEBUG("swapping reversed erase region information on cmdset 0002 device");
+               LOG_DEBUG("swapping reversed erase region information on cmdset 0002 device");
 
                for (i = 0; i < cfi_info->num_erase_regions / 2; i++)
                {
                        int j = (cfi_info->num_erase_regions - 1) - i;
-                       u32 swap;
+                       uint32_t swap;
 
                        swap = cfi_info->erase_region_info[i];
                        cfi_info->erase_region_info[i] = cfi_info->erase_region_info[j];
@@ -1846,27 +2107,72 @@ void cfi_fixup_0002_erase_regions(flash_bank_t *bank, void *param)
        }
 }
 
-void cfi_fixup_0002_unlock_addresses(flash_bank_t *bank, void *param)
+static void cfi_fixup_0002_unlock_addresses(flash_bank_t *bank, void *param)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
-       cfi_unlock_addresses_t *unlock_addresses = param;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
+       struct cfi_unlock_addresses *unlock_addresses = param;
 
        pri_ext->_unlock1 = unlock_addresses->unlock1;
        pri_ext->_unlock2 = unlock_addresses->unlock2;
 }
 
-int cfi_probe(struct flash_bank_s *bank)
+
+static int cfi_query_string(struct flash_bank_s *bank, int address)
+{
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       target_t *target = bank->target;
+       int retval;
+       uint8_t command[8];
+
+       cfi_command(bank, 0x98, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, address), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       cfi_info->qry[0] = cfi_query_u8(bank, 0, 0x10);
+       cfi_info->qry[1] = cfi_query_u8(bank, 0, 0x11);
+       cfi_info->qry[2] = cfi_query_u8(bank, 0, 0x12);
+
+       LOG_DEBUG("CFI qry returned: 0x%2.2x 0x%2.2x 0x%2.2x", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2]);
+
+       if ((cfi_info->qry[0] != 'Q') || (cfi_info->qry[1] != 'R') || (cfi_info->qry[2] != 'Y'))
+       {
+               cfi_command(bank, 0xf0, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               cfi_command(bank, 0xff, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               LOG_ERROR("Could not probe bank: no QRY");
+               return ERROR_FLASH_BANK_INVALID;
+       }
+
+       return ERROR_OK;
+}
+
+static int cfi_probe(struct flash_bank_s *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
        int num_sectors = 0;
        int i;
        int sector = 0;
-       u32 offset = 0;
-       u32 unlock1 = 0x555;
-       u32 unlock2 = 0x2aa;
+       uint32_t unlock1 = 0x555;
+       uint32_t unlock2 = 0x2aa;
+       int retval;
+
+       if (bank->target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
 
        cfi_info->probed = 0;
 
@@ -1881,39 +2187,70 @@ int cfi_probe(struct flash_bank_s *bank)
 
        /* switch to read identifier codes mode ("AUTOSELECT") */
        cfi_command(bank, 0xaa, command);
-       target->type->write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
        cfi_command(bank, 0x55, command);
-       target->type->write_memory(target, flash_address(bank, 0, unlock2), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
        cfi_command(bank, 0x90, command);
-       target->type->write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        if (bank->chip_width == 1)
        {
-               u8 manufacturer, device_id;
-               target_read_u8(target, bank->base + 0x0, &manufacturer);
-               target_read_u8(target, bank->base + 0x1, &device_id);
+               uint8_t manufacturer, device_id;
+               if ((retval = target_read_u8(target, flash_address(bank, 0, 0x00), &manufacturer)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               if ((retval = target_read_u8(target, flash_address(bank, 0, 0x01), &device_id)) != ERROR_OK)
+               {
+                       return retval;
+               }
                cfi_info->manufacturer = manufacturer;
                cfi_info->device_id = device_id;
        }
        else if (bank->chip_width == 2)
        {
-               target_read_u16(target, bank->base + 0x0, &cfi_info->manufacturer);
-               target_read_u16(target, bank->base + 0x2, &cfi_info->device_id);
+               if ((retval = target_read_u16(target, flash_address(bank, 0, 0x00), &cfi_info->manufacturer)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               if ((retval = target_read_u16(target, flash_address(bank, 0, 0x01), &cfi_info->device_id)) != ERROR_OK)
+               {
+                       return retval;
+               }
        }
 
+       LOG_INFO("Flash Manufacturer/Device: 0x%04x 0x%04x", cfi_info->manufacturer, cfi_info->device_id);
        /* switch back to read array mode */
        cfi_command(bank, 0xf0, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
        cfi_command(bank, 0xff, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
-       cfi_fixup(bank, cfi_jedec_fixups);
+       /* check device/manufacturer ID for known non-CFI flashes. */
+       cfi_fixup_non_cfi(bank);
 
        /* query only if this is a CFI compatible flash,
         * otherwise the relevant info has already been filled in
         */
        if (cfi_info->not_cfi == 0)
        {
+               int retval;
+
                /* enter CFI query mode
                 * according to JEDEC Standard No. 68.01,
                 * a single bus sequence with address = 0x55, data = 0x98 should put
@@ -1921,30 +2258,28 @@ int cfi_probe(struct flash_bank_s *bank)
                 *
                 * SST flashes clearly violate this, and we will consider them incompatbile for now
                 */
-               cfi_command(bank, 0x98, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command);
-
-               cfi_info->qry[0] = cfi_query_u8(bank, 0, 0x10);
-               cfi_info->qry[1] = cfi_query_u8(bank, 0, 0x11);
-               cfi_info->qry[2] = cfi_query_u8(bank, 0, 0x12);
-
-               DEBUG("CFI qry returned: 0x%2.2x 0x%2.2x 0x%2.2x", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2]);
 
-               if ((cfi_info->qry[0] != 'Q') || (cfi_info->qry[1] != 'R') || (cfi_info->qry[2] != 'Y'))
+               retval = cfi_query_string(bank, 0x55);
+               if (retval != ERROR_OK)
                {
-                       cfi_command(bank, 0xf0, command);
-                       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
-                       cfi_command(bank, 0xff, command);
-                       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
-                       return ERROR_FLASH_BANK_INVALID;
+                       /*
+                        * Spansion S29WS-N CFI query fix is to try 0x555 if 0x55 fails. Should
+                        * be harmless enough:
+                        *
+                        * http://www.infradead.org/pipermail/linux-mtd/2005-September/013618.html
+                        */
+                       LOG_USER("Try workaround w/0x555 instead of 0x55 to get QRY.");
+                       retval = cfi_query_string(bank, 0x555);
                }
+               if (retval != ERROR_OK)
+                       return retval;
 
                cfi_info->pri_id = cfi_query_u16(bank, 0, 0x13);
                cfi_info->pri_addr = cfi_query_u16(bank, 0, 0x15);
                cfi_info->alt_id = cfi_query_u16(bank, 0, 0x17);
                cfi_info->alt_addr = cfi_query_u16(bank, 0, 0x19);
 
-               DEBUG("qry: '%c%c%c', pri_id: 0x%4.4x, pri_addr: 0x%4.4x, alt_id: 0x%4.4x, alt_addr: 0x%4.4x", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2], cfi_info->pri_id, cfi_info->pri_addr, cfi_info->alt_id, cfi_info->alt_addr);
+               LOG_DEBUG("qry: '%c%c%c', pri_id: 0x%4.4x, pri_addr: 0x%4.4x, alt_id: 0x%4.4x, alt_addr: 0x%4.4x", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2], cfi_info->pri_id, cfi_info->pri_addr, cfi_info->alt_id, cfi_info->alt_addr);
 
                cfi_info->vcc_min = cfi_query_u8(bank, 0, 0x1b);
                cfi_info->vcc_max = cfi_query_u8(bank, 0, 0x1c);
@@ -1959,29 +2294,24 @@ int cfi_probe(struct flash_bank_s *bank)
                cfi_info->block_erase_timeout_max = cfi_query_u8(bank, 0, 0x25);
                cfi_info->chip_erase_timeout_max = cfi_query_u8(bank, 0, 0x26);
 
-               DEBUG("Vcc min: %1.1x.%1.1x, Vcc max: %1.1x.%1.1x, Vpp min: %1.1x.%1.1x, Vpp max: %1.1x.%1.1x",
+               LOG_DEBUG("Vcc min: %1.1x.%1.1x, Vcc max: %1.1x.%1.1x, Vpp min: %1.1x.%1.1x, Vpp max: %1.1x.%1.1x",
                        (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
                        (cfi_info->vcc_max & 0xf0) >> 4, cfi_info->vcc_max & 0x0f,
                        (cfi_info->vpp_min & 0xf0) >> 4, cfi_info->vpp_min & 0x0f,
                        (cfi_info->vpp_max & 0xf0) >> 4, cfi_info->vpp_max & 0x0f);
-               DEBUG("typ. word write timeout: %u, typ. buf write timeout: %u, typ. block erase timeout: %u, typ. chip erase timeout: %u", 1 << cfi_info->word_write_timeout_typ, 1 << cfi_info->buf_write_timeout_typ,
+               LOG_DEBUG("typ. word write timeout: %u, typ. buf write timeout: %u, typ. block erase timeout: %u, typ. chip erase timeout: %u", 1 << cfi_info->word_write_timeout_typ, 1 << cfi_info->buf_write_timeout_typ,
                        1 << cfi_info->block_erase_timeout_typ, 1 << cfi_info->chip_erase_timeout_typ);
-               DEBUG("max. word write timeout: %u, max. buf write timeout: %u, max. block erase timeout: %u, max. chip erase timeout: %u", (1 << cfi_info->word_write_timeout_max) * (1 << cfi_info->word_write_timeout_typ),
+               LOG_DEBUG("max. word write timeout: %u, max. buf write timeout: %u, max. block erase timeout: %u, max. chip erase timeout: %u", (1 << cfi_info->word_write_timeout_max) * (1 << cfi_info->word_write_timeout_typ),
                        (1 << cfi_info->buf_write_timeout_max) * (1 << cfi_info->buf_write_timeout_typ),
                        (1 << cfi_info->block_erase_timeout_max) * (1 << cfi_info->block_erase_timeout_typ),
                        (1 << cfi_info->chip_erase_timeout_max) * (1 << cfi_info->chip_erase_timeout_typ));
 
-               cfi_info->dev_size = cfi_query_u8(bank, 0, 0x27);
+               cfi_info->dev_size = 1 << cfi_query_u8(bank, 0, 0x27);
                cfi_info->interface_desc = cfi_query_u16(bank, 0, 0x28);
                cfi_info->max_buf_write_size = cfi_query_u16(bank, 0, 0x2a);
                cfi_info->num_erase_regions = cfi_query_u8(bank, 0, 0x2c);
 
-               DEBUG("size: 0x%x, interface desc: %i, max buffer write size: %x", 1 << cfi_info->dev_size, cfi_info->interface_desc, (1 << cfi_info->max_buf_write_size));
-
-               if (((1 << cfi_info->dev_size) * bank->bus_width / bank->chip_width) != bank->size)
-               {
-                       WARNING("configuration specifies 0x%x size, but a 0x%x size flash was found", bank->size, 1 << cfi_info->dev_size);
-               }
+               LOG_DEBUG("size: 0x%" PRIx32 ", interface desc: %i, max buffer write size: %x", cfi_info->dev_size, cfi_info->interface_desc, (1 << cfi_info->max_buf_write_size));
 
                if (cfi_info->num_erase_regions)
                {
@@ -1989,7 +2319,10 @@ int cfi_probe(struct flash_bank_s *bank)
                        for (i = 0; i < cfi_info->num_erase_regions; i++)
                        {
                                cfi_info->erase_region_info[i] = cfi_query_u32(bank, 0, 0x2d + (4 * i));
-                               DEBUG("erase region[%i]: %i blocks of size 0x%x", i, (cfi_info->erase_region_info[i] & 0xffff) + 1, (cfi_info->erase_region_info[i] >> 16) * 256);
+                               LOG_DEBUG("erase region[%i]: %" PRIu32 " blocks of size 0x%" PRIx32 "",
+                                         i,
+                                         (cfi_info->erase_region_info[i] & 0xffff) + 1,
+                                         (cfi_info->erase_region_info[i] >> 16) * 256);
                        }
                }
                else
@@ -2000,7 +2333,7 @@ int cfi_probe(struct flash_bank_s *bank)
                /* We need to read the primary algorithm extended query table before calculating
                 * the sector layout to be able to apply fixups
                 */
-               switch(cfi_info->pri_id)
+               switch (cfi_info->pri_id)
                {
                        /* Intel command set (standard and extended) */
                        case 0x0001:
@@ -2009,10 +2342,11 @@ int cfi_probe(struct flash_bank_s *bank)
                                break;
                        /* AMD/Spansion, Atmel, ... command set */
                        case 0x0002:
+                               cfi_info->status_poll_mask = CFI_STATUS_POLL_MASK_DQ5_DQ6_DQ7; /* default for all CFI flashs */
                                cfi_read_0002_pri_ext(bank);
                                break;
                        default:
-                               ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                               LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                                break;
                }
 
@@ -2020,13 +2354,19 @@ int cfi_probe(struct flash_bank_s *bank)
                 * we use both reset commands, as some Intel flashes fail to recognize the 0xF0 command
                 */
                cfi_command(bank, 0xf0, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
                cfi_command(bank, 0xff, command);
-               target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
-       }
+               if ((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+               {
+                       return retval;
+               }
+       } /* end CFI case */
 
        /* apply fixups depending on the primary command set */
-       switch(cfi_info->pri_id)
+       switch (cfi_info->pri_id)
        {
                /* Intel command set (standard and extended) */
                case 0x0001:
@@ -2038,15 +2378,20 @@ int cfi_probe(struct flash_bank_s *bank)
                        cfi_fixup(bank, cfi_0002_fixups);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
        }
 
+       if ((cfi_info->dev_size * bank->bus_width / bank->chip_width) != bank->size)
+       {
+               LOG_WARNING("configuration specifies 0x%" PRIx32 " size, but a 0x%" PRIx32 " size flash was found", bank->size, cfi_info->dev_size);
+       }
+
        if (cfi_info->num_erase_regions == 0)
        {
                /* a device might have only one erase block, spanning the whole device */
                bank->num_sectors = 1;
-               bank->sectors = malloc(sizeof(flash_sector_t));
+               bank->sectors = malloc(sizeof(struct flash_sector));
 
                bank->sectors[sector].offset = 0x0;
                bank->sectors[sector].size = bank->size;
@@ -2055,17 +2400,19 @@ int cfi_probe(struct flash_bank_s *bank)
        }
        else
        {
+               uint32_t offset = 0;
+
                for (i = 0; i < cfi_info->num_erase_regions; i++)
                {
                        num_sectors += (cfi_info->erase_region_info[i] & 0xffff) + 1;
                }
 
                bank->num_sectors = num_sectors;
-               bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
+               bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
 
                for (i = 0; i < cfi_info->num_erase_regions; i++)
                {
-                       int j;
+                       uint32_t j;
                        for (j = 0; j < (cfi_info->erase_region_info[i] & 0xffff) + 1; j++)
                        {
                                bank->sectors[sector].offset = offset;
@@ -2076,138 +2423,34 @@ int cfi_probe(struct flash_bank_s *bank)
                                sector++;
                        }
                }
+               if (offset != (cfi_info->dev_size * bank->bus_width / bank->chip_width))
+               {
+                       LOG_WARNING("CFI size is 0x%" PRIx32 ", but total sector size is 0x%" PRIx32 "", \
+                               (cfi_info->dev_size * bank->bus_width / bank->chip_width), offset);
+               }
        }
-       
+
        cfi_info->probed = 1;
 
        return ERROR_OK;
 }
 
-int cfi_auto_probe(struct flash_bank_s *bank)
+static int cfi_auto_probe(struct flash_bank_s *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
        if (cfi_info->probed)
                return ERROR_OK;
        return cfi_probe(bank);
 }
 
-int cfi_erase_check(struct flash_bank_s *bank)
-{
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       target_t *target = bank->target;
-       int i;
-       int retval;
-
-       if (!cfi_info->erase_check_algorithm)
-       {
-               u32 erase_check_code[] =
-               {
-                       0xe4d03001,     /* ldrb r3, [r0], #1    */
-                       0xe0022003, /* and r2, r2, r3           */
-                       0xe2511001, /* subs r1, r1, #1          */
-                       0x1afffffb,     /* b -4                                 */
-                       0xeafffffe      /* b 0                                  */
-               };
-
-               /* make sure we have a working area */
-               if (target_alloc_working_area(target, 20, &cfi_info->erase_check_algorithm) != ERROR_OK)
-               {
-                       WARNING("no working area available, falling back to slow memory reads");
-               }
-               else
-               {
-                       u8 erase_check_code_buf[5 * 4];
-
-                       for (i = 0; i < 5; i++)
-                               target_buffer_set_u32(target, erase_check_code_buf + (i*4), erase_check_code[i]);
-
-                       /* write algorithm code to working area */
-                       target->type->write_memory(target, cfi_info->erase_check_algorithm->address, 4, 5, erase_check_code_buf);
-               }
-       }
-
-       if (!cfi_info->erase_check_algorithm)
-       {
-               u32 *buffer = malloc(4096);
-
-               for (i = 0; i < bank->num_sectors; i++)
-               {
-                       u32 address = bank->base + bank->sectors[i].offset;
-                       u32 size = bank->sectors[i].size;
-                       u32 check = 0xffffffffU;
-                       int erased = 1;
-
-                       while (size > 0)
-                       {
-                               u32 thisrun_size = (size > 4096) ? 4096 : size;
-                               int j;
-
-                               target->type->read_memory(target, address, 4, thisrun_size / 4, (u8*)buffer);
-
-                               for (j = 0; j < thisrun_size / 4; j++)
-                                       check &= buffer[j];
-
-                               if (check != 0xffffffff)
-                               {
-                                       erased = 0;
-                                       break;
-                               }
-
-                               size -= thisrun_size;
-                               address += thisrun_size;
-                       }
-
-                       bank->sectors[i].is_erased = erased;
-               }
-
-               free(buffer);
-       }
-       else
-       {
-               for (i = 0; i < bank->num_sectors; i++)
-               {
-                       u32 address = bank->base + bank->sectors[i].offset;
-                       u32 size = bank->sectors[i].size;
-
-                       reg_param_t reg_params[3];
-                       armv4_5_algorithm_t armv4_5_info;
-
-                       armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
-                       armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
-                       armv4_5_info.core_state = ARMV4_5_STATE_ARM;
-
-                       init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
-                       buf_set_u32(reg_params[0].value, 0, 32, address);
-
-                       init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
-                       buf_set_u32(reg_params[1].value, 0, 32, size);
-
-                       init_reg_param(&reg_params[2], "r2", 32, PARAM_IN_OUT);
-                       buf_set_u32(reg_params[2].value, 0, 32, 0xff);
-
-                       if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, cfi_info->erase_check_algorithm->address, cfi_info->erase_check_algorithm->address + 0x10, 10000, &armv4_5_info)) != ERROR_OK)
-                               return ERROR_FLASH_OPERATION_FAILED;
-
-                       if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
-                               bank->sectors[i].is_erased = 1;
-                       else
-                               bank->sectors[i].is_erased = 0;
-
-                       destroy_reg_param(&reg_params[0]);
-                       destroy_reg_param(&reg_params[1]);
-                       destroy_reg_param(&reg_params[2]);
-               }
-       }
-
-       return ERROR_OK;
-}
 
-int cfi_intel_protect_check(struct flash_bank_s *bank)
+static int cfi_intel_protect_check(struct flash_bank_s *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
-       u8 command[CFI_MAX_BUS_WIDTH];
+       uint8_t command[CFI_MAX_BUS_WIDTH];
        int i;
 
        /* check if block lock bits are supported on this device */
@@ -2215,11 +2458,14 @@ int cfi_intel_protect_check(struct flash_bank_s *bank)
                return ERROR_FLASH_OPERATION_FAILED;
 
        cfi_command(bank, 0x90, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        for (i = 0; i < bank->num_sectors; i++)
        {
-               u8 block_status = cfi_get_u8(bank, i, 0x2);
+               uint8_t block_status = cfi_get_u8(bank, i, 0x2);
 
                if (block_status & 1)
                        bank->sectors[i].is_protected = 1;
@@ -2228,31 +2474,39 @@ int cfi_intel_protect_check(struct flash_bank_s *bank)
        }
 
        cfi_command(bank, 0xff, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
-
-       return ERROR_OK;
+       return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
-int cfi_spansion_protect_check(struct flash_bank_s *bank)
+static int cfi_spansion_protect_check(struct flash_bank_s *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
-       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
-       u8 command[8];
+       uint8_t command[8];
        int i;
 
        cfi_command(bank, 0xaa, command);
-       target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        cfi_command(bank, 0x55, command);
-       target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        cfi_command(bank, 0x90, command);
-       target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
+       if ((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
 
        for (i = 0; i < bank->num_sectors; i++)
        {
-               u8 block_status = cfi_get_u8(bank, i, 0x2);
+               uint8_t block_status = cfi_get_u8(bank, i, 0x2);
 
                if (block_status & 1)
                        bank->sectors[i].is_protected = 1;
@@ -2261,19 +2515,23 @@ int cfi_spansion_protect_check(struct flash_bank_s *bank)
        }
 
        cfi_command(bank, 0xf0, command);
-       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
-
-       return ERROR_OK;
+       return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
-int cfi_protect_check(struct flash_bank_s *bank)
+static int cfi_protect_check(struct flash_bank_s *bank)
 {
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+
+       if (bank->target->state != TARGET_HALTED)
+       {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
 
        if (cfi_info->qry[0] != 'Q')
                return ERROR_FLASH_BANK_NOT_PROBED;
 
-       switch(cfi_info->pri_id)
+       switch (cfi_info->pri_id)
        {
                case 1:
                case 3:
@@ -2283,17 +2541,17 @@ int cfi_protect_check(struct flash_bank_s *bank)
                        return cfi_spansion_protect_check(bank);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
        }
 
        return ERROR_OK;
 }
 
-int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
+static int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
 {
        int printed;
-       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
        if (cfi_info->qry[0] == (char)-1)
        {
@@ -2301,7 +2559,10 @@ int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
                return ERROR_OK;
        }
 
-       printed = snprintf(buf, buf_size, "\ncfi information:\n");
+       if (cfi_info->not_cfi == 0)
+               printed = snprintf(buf, buf_size, "\ncfi information:\n");
+       else
+               printed = snprintf(buf, buf_size, "\nnon-cfi flash:\n");
        buf += printed;
        buf_size -= printed;
 
@@ -2310,34 +2571,44 @@ int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
        buf += printed;
        buf_size -= printed;
 
+       if (cfi_info->not_cfi == 0)
+       {
        printed = snprintf(buf, buf_size, "qry: '%c%c%c', pri_id: 0x%4.4x, pri_addr: 0x%4.4x, alt_id: 0x%4.4x, alt_addr: 0x%4.4x\n", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2], cfi_info->pri_id, cfi_info->pri_addr, cfi_info->alt_id, cfi_info->alt_addr);
        buf += printed;
        buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "Vcc min: %1.1x.%1.1x, Vcc max: %1.1x.%1.1x, Vpp min: %1.1x.%1.1x, Vpp max: %1.1x.%1.1x\n", (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
+               printed = snprintf(buf, buf_size, "Vcc min: %1.1x.%1.1x, Vcc max: %1.1x.%1.1x, Vpp min: %1.1x.%1.1x, Vpp max: %1.1x.%1.1x\n",
+                                  (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
        (cfi_info->vcc_max & 0xf0) >> 4, cfi_info->vcc_max & 0x0f,
        (cfi_info->vpp_min & 0xf0) >> 4, cfi_info->vpp_min & 0x0f,
        (cfi_info->vpp_max & 0xf0) >> 4, cfi_info->vpp_max & 0x0f);
        buf += printed;
        buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "typ. word write timeout: %u, typ. buf write timeout: %u, typ. block erase timeout: %u, typ. chip erase timeout: %u\n", 1 << cfi_info->word_write_timeout_typ, 1 << cfi_info->buf_write_timeout_typ,
-                 1 << cfi_info->block_erase_timeout_typ, 1 << cfi_info->chip_erase_timeout_typ);
+               printed = snprintf(buf, buf_size, "typ. word write timeout: %u, typ. buf write timeout: %u, typ. block erase timeout: %u, typ. chip erase timeout: %u\n",
+                                  1 << cfi_info->word_write_timeout_typ,
+                                  1 << cfi_info->buf_write_timeout_typ,
+                                  1 << cfi_info->block_erase_timeout_typ,
+                                  1 << cfi_info->chip_erase_timeout_typ);
        buf += printed;
        buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "max. word write timeout: %u, max. buf write timeout: %u, max. block erase timeout: %u, max. chip erase timeout: %u\n", (1 << cfi_info->word_write_timeout_max) * (1 << cfi_info->word_write_timeout_typ),
+               printed = snprintf(buf, buf_size, "max. word write timeout: %u, max. buf write timeout: %u, max. block erase timeout: %u, max. chip erase timeout: %u\n",
+                                  (1 << cfi_info->word_write_timeout_max) * (1 << cfi_info->word_write_timeout_typ),
                  (1 << cfi_info->buf_write_timeout_max) * (1 << cfi_info->buf_write_timeout_typ),
                  (1 << cfi_info->block_erase_timeout_max) * (1 << cfi_info->block_erase_timeout_typ),
                  (1 << cfi_info->chip_erase_timeout_max) * (1 << cfi_info->chip_erase_timeout_typ));
        buf += printed;
        buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "size: 0x%x, interface desc: %i, max buffer write size: %x\n", 1 << cfi_info->dev_size, cfi_info->interface_desc, cfi_info->max_buf_write_size);
+               printed = snprintf(buf, buf_size, "size: 0x%" PRIx32 ", interface desc: %i, max buffer write size: %x\n",
+                                  cfi_info->dev_size,
+                                  cfi_info->interface_desc,
+                                  1 << cfi_info->max_buf_write_size);
        buf += printed;
        buf_size -= printed;
 
-       switch(cfi_info->pri_id)
+       switch (cfi_info->pri_id)
        {
                case 1:
                case 3:
@@ -2347,9 +2618,24 @@ int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
                        cfi_spansion_info(bank, buf, buf_size);
                        break;
                default:
-                       ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
+                       LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
        }
+       }
 
        return ERROR_OK;
 }
+
+struct flash_driver cfi_flash = {
+               .name = "cfi",
+               .register_commands = &cfi_register_commands,
+               .flash_bank_command = &cfi_flash_bank_command,
+               .erase = &cfi_erase,
+               .protect = &cfi_protect,
+               .write = &cfi_write,
+               .probe = &cfi_probe,
+               .auto_probe = &cfi_auto_probe,
+               .erase_check = &default_flash_blank_check,
+               .protect_check = &cfi_protect_check,
+               .info = &cfi_info,
+       };

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