Michael Schwingen <rincewind@discworld.dascon.de> add non-CFI SST flashs
[openocd.git] / src / flash / cfi.c
index b11aae94206ef5992e154bffff8e157c1d08ddec..b4bb605339e9076c732909de4dca69d6e50cfa55 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 <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);
+static int cfi_register_commands(struct command_context_s *cmd_ctx);
+static int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
+static int cfi_erase(struct flash_bank_s *bank, int first, int last);
+static int cfi_protect(struct flash_bank_s *bank, int set, int first, int last);
+static int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
+static int cfi_probe(struct flash_bank_s *bank);
+static int cfi_auto_probe(struct flash_bank_s *bank);
+static int cfi_protect_check(struct flash_bank_s *bank);
+static 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);
+//static 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
@@ -67,54 +68,44 @@ flash_driver_t cfi_flash =
        .write = cfi_write,
        .probe = cfi_probe,
        .auto_probe = cfi_auto_probe,
-       .erase_check = cfi_erase_check,
+       .erase_check = default_flash_blank_check,
        .protect_check = cfi_protect_check,
        .info = cfi_info
 };
 
-cfi_unlock_addresses_t cfi_unlock_addresses[] =
+static cfi_unlock_addresses_t 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_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 cfi_fixup_t 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 cfi_fixup_t 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, cfi_fixup_t *fixups)
 {
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_fixup_t *f;
@@ -139,7 +130,7 @@ __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;
@@ -147,7 +138,7 @@ __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, u8 cmd, u8 *cmd_buf)
 {
        int i;
 
@@ -177,7 +168,7 @@ 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 u8 cfi_query_u8(flash_bank_t *bank, int sector, u32 offset)
 {
        target_t *target = bank->target;
        u8 data[CFI_MAX_BUS_WIDTH];
@@ -194,7 +185,7 @@ 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 u8 cfi_get_u8(flash_bank_t *bank, int sector, u32 offset)
 {
        target_t *target = bank->target;
        u8 data[CFI_MAX_BUS_WIDTH];
@@ -219,7 +210,7 @@ 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 u16 cfi_query_u16(flash_bank_t *bank, int sector, u32 offset)
 {
        target_t *target = bank->target;
        u8 data[CFI_MAX_BUS_WIDTH * 2];
@@ -232,7 +223,7 @@ 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 u32 cfi_query_u32(flash_bank_t *bank, int sector, u32 offset)
 {
        target_t *target = bank->target;
        u8 data[CFI_MAX_BUS_WIDTH * 4];
@@ -246,14 +237,14 @@ 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];
 
        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);
        }
 
@@ -267,34 +258,34 @@ u8 cfi_intel_wait_status_busy(flash_bank_t *bank, int timeout)
 
        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);
        }
@@ -305,39 +296,41 @@ 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;
+       cfi_flash_bank_t *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)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_intel_pri_ext_t *pri_ext = malloc(sizeof(cfi_intel_pri_ext_t));
        target_t *target = bank->target;
@@ -352,47 +345,55 @@ 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->type->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->type->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%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);
 
        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)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_spansion_pri_ext_t *pri_ext = malloc(sizeof(cfi_spansion_pri_ext_t));
        target_t *target = bank->target;
@@ -407,14 +408,18 @@ 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->type->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);
@@ -428,20 +433,20 @@ 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;
@@ -451,8 +456,9 @@ 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)
 {
+       int retval;
        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));
@@ -475,7 +481,11 @@ 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->type->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;
        }
 
@@ -486,7 +496,7 @@ 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;
@@ -496,7 +506,7 @@ 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)
@@ -513,7 +523,7 @@ 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;
 
@@ -527,7 +537,7 @@ 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;
@@ -562,7 +572,7 @@ 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;
@@ -591,7 +601,7 @@ 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]");
@@ -604,21 +614,23 @@ 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)
+static int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
 {
        cfi_flash_bank_t *cfi_info;
        int i;
+       (void) cmd_ctx;
+       (void) cmd;
 
        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))
        {
-               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;
        }
 
@@ -627,7 +639,6 @@ int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **
        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;
@@ -653,8 +664,9 @@ 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)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
        u8 command[8];
@@ -665,31 +677,40 @@ 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->type->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->type->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->type->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%x", 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->type->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)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
@@ -699,47 +720,67 @@ int cfi_spansion_erase(struct flash_bank_s *bank, int first, int last)
        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->type->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->type->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->type->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->type->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->type->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->type->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->type->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%x", 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->type->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;
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -761,15 +802,16 @@ 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)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
@@ -788,20 +830,29 @@ 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%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
+               if((retval = target->type->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%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
+                       if((retval = target->type->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%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
+                       if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        bank->sectors[i].is_protected = 0;
                }
 
@@ -816,14 +867,20 @@ int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
                        u8 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->type->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->type->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)
@@ -849,10 +906,16 @@ 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->type->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->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+                               {
+                                       return retval;
+                               }
 
                                cfi_intel_wait_status_busy(bank, 100);
                        }
@@ -860,17 +923,16 @@ 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->type->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;
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -889,7 +951,7 @@ int cfi_protect(struct flash_bank_s *bank, int set, int first, int last)
                        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;
        }
 
@@ -943,7 +1005,7 @@ static void cfi_fix_code_endian(target_t *target, u8 *dest, const u32 *src, u32
        }
 }
 
-u32 cfi_command_val(flash_bank_t *bank, u8 cmd)
+static u32 cfi_command_val(flash_bank_t *bank, u8 cmd)
 {
        target_t *target = bank->target;
 
@@ -961,12 +1023,12 @@ u32 cfi_command_val(flash_bank_t *bank, u8 cmd)
                return target_buffer_get_u32(target, buf);
                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 0;
        }
 }
 
-int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u32 count)
+static int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u32 count)
 {
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
@@ -1038,7 +1100,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
        };
        u8 target_code[4*CFI_MAX_INTEL_CODESIZE];
        const u32 *target_code_src;
-       int target_code_size;
+       u32 target_code_size;
        int retval = ERROR_OK;
 
 
@@ -1071,7 +1133,7 @@ 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;
        }
 
@@ -1080,7 +1142,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
        {
                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 / 4);
@@ -1089,7 +1151,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                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;
                };
 
@@ -1097,7 +1159,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                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;
                }
        }
@@ -1110,7 +1172,7 @@ 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;
                }
@@ -1130,7 +1192,7 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
        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%08x and of size 0x%04x", source->address, buffer_size );
 
        /* Programming main loop */
        while (count > 0)
@@ -1138,7 +1200,10 @@ int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u3
                u32 thisrun_count = (count > buffer_size) ? buffer_size : count;
                u32 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);
@@ -1148,7 +1213,7 @@ 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%04x bytes to flash at 0x%08x", thisrun_count, address );
 
                /* Execute algorithm, assume breakpoint for last instruction */
                retval = target->type->run_algorithm(target, 0, NULL, 7, reg_params,
@@ -1161,7 +1226,7 @@ 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
@@ -1207,7 +1272,7 @@ 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, u8 *buffer, u32 address, u32 count)
 {
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
@@ -1217,7 +1282,7 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
        working_area_t *source;
        u32 buffer_size = 32768;
        u32 status;
-       int retval;
+       int retval, retvaltemp;
        int exit_code = ERROR_OK;
 
        /* input parameters - */
@@ -1366,7 +1431,7 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
                        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_FLASH_OPERATION_FAILED;
                }
                target_code = malloc(target_code_size);
@@ -1376,11 +1441,18 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
                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,
-                                   target_code_size, target_code);
+               if((retval = target_write_buffer(target, cfi_info->write_algorithm->address,
+                                   target_code_size, target_code)) != ERROR_OK)
+               {
+                       free(target_code);
+                       return retval;
+               }
 
                free(target_code);
        }
@@ -1395,7 +1467,7 @@ 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;
                }
        };
@@ -1415,7 +1487,7 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
        {
                u32 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);
@@ -1434,9 +1506,9 @@ int cfi_spansion_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address,
 
                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%x", status);
                        exit_code = ERROR_FLASH_OPERATION_FAILED;
                        break;
                }
@@ -1462,45 +1534,56 @@ 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, u8 *word, u32 address)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
        u8 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->type->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->type->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->type->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%x, address %x", 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, u8 *word, u32 wordcount, u32 address)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
        u8 command[8];
 
        /* Calculate buffer size and boundary mask */
-       u32 buffersize = 1UL << cfi_info->max_buf_write_size;
+       u32 buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
        u32 buffermask = buffersize-1;
        u32 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%x, address %x not aligned to 2^%d boundary", bank->base, address, cfi_info->max_buf_write_size);
                return ERROR_FLASH_OPERATION_FAILED;
        }
        switch(bank->chip_width)
@@ -1509,14 +1592,17 @@ int cfi_intel_write_words(struct flash_bank_s *bank, u8 *word, u32 wordcount, u3
        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 %d exceeds available buffersize %d", wordcount, buffersize);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
@@ -1525,68 +1611,194 @@ 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->type->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->type->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%x, address %x", 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->type->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->type->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->type->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->type->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%x, address %x 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, u8 *word, u32 address)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
        u8 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->type->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->type->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->type->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->type->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->type->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%x, address %x", 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, u8 *word, u32 wordcount, u32 address)
+{
+       int retval;
+       cfi_flash_bank_t *cfi_info = bank->driver_priv;
+       target_t *target = bank->target;
+       u8 command[8];
+       cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
+
+       /* Calculate buffer size and boundary mask */
+       u32 buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
+       u32 buffermask = buffersize-1;
+       u32 bufferwsize;
+
+       /* Check for valid range */
+       if (address & buffermask)
+       {
+               LOG_ERROR("Write address at base 0x%x, address %x 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 %d exceeds available buffersize %d", wordcount, buffersize);
+               return ERROR_FLASH_OPERATION_FAILED;
+       }
+
+       // Unlock
+       cfi_command(bank, 0xaa, command);
+       if((retval = target->type->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->type->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->type->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->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       if((retval = target->type->write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
+       {
+               return retval;
+       }
+
+       /* Commit write operation */
+       cfi_command(bank, 0x29, command);
+       if((retval = target->type->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->type->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%x, address %x, size %x", bank->base, address, bufferwsize);
+               return ERROR_FLASH_OPERATION_FAILED;
+       }
+
+       return ERROR_OK;
+}
+
+static int cfi_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
 {
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
 
@@ -1600,14 +1812,14 @@ 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, u8 *word, u32 wordcount, u32 address)
 {
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
 
@@ -1618,11 +1830,10 @@ int cfi_write_words(struct flash_bank_s *bank, u8 *word, u32 wordcount, u32 addr
                        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;
        }
 
@@ -1642,7 +1853,10 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
        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;
@@ -1654,7 +1868,7 @@ 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;
@@ -1664,7 +1878,10 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                for (i = 0; i < align; ++i, ++copy_p)
                {
                        u8 byte;
-                       target->type->read_memory(target, copy_p, 1, 1, &byte);
+                       if((retval = target->type->read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        cfi_add_byte(bank, current_word, byte);
                }
 
@@ -1680,7 +1897,10 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                for (; (count == 0) && (i < bank->bus_width); ++i, ++copy_p)
                {
                        u8 byte;
-                       target->type->read_memory(target, copy_p, 1, 1, &byte);
+                       if((retval = target->type->read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
+                       {
+                               return retval;
+                       }
                        cfi_add_byte(bank, current_word, byte);
                }
 
@@ -1703,7 +1923,7 @@ 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;
        }
@@ -1718,7 +1938,8 @@ 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;
+                       //adjust buffersize for chip width
+                       u32 buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
                        u32 buffermask = buffersize-1;
                        u32 bufferwsize;
 
@@ -1728,28 +1949,34 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                        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 >= (u32)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 %08x, count %08x bytes remaining", write_p, count);
                                }
+                               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
+                               /* try the slow way? */
+                               if (fallback)
                                {
                                        for (i = 0; i < bank->bus_width; i++)
                                                current_word[i] = 0;
@@ -1774,14 +2001,20 @@ 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->type->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->type->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 %d unaligned tail bytes", count );
 
                copy_p = write_p;
                for (i = 0; i < bank->bus_width; i++)
@@ -1795,7 +2028,10 @@ 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);
+                       if((retval = target->type->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);
@@ -1805,30 +2041,33 @@ 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->type->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->type->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)
 {
+       (void) param;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_spansion_pri_ext_t *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;
+       (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++)
                {
@@ -1842,7 +2081,7 @@ 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;
@@ -1852,7 +2091,7 @@ void cfi_fixup_0002_unlock_addresses(flash_bank_t *bank, void *param)
        pri_ext->_unlock2 = unlock_addresses->unlock2;
 }
 
-int cfi_probe(struct flash_bank_s *bank)
+static int cfi_probe(struct flash_bank_s *bank)
 {
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        target_t *target = bank->target;
@@ -1860,12 +2099,13 @@ int cfi_probe(struct flash_bank_s *bank)
        int num_sectors = 0;
        int i;
        int sector = 0;
-       u32 offset = 0;
        u32 unlock1 = 0x555;
        u32 unlock2 = 0x2aa;
+       int retval;
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -1882,33 +2122,62 @@ 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->type->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->type->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->type->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);
+               if((retval = target_read_u8(target, bank->base + 0x0, &manufacturer)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               if((retval = target_read_u8(target, bank->base + 0x1, &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, bank->base + 0x0, &cfi_info->manufacturer)) != ERROR_OK)
+               {
+                       return retval;
+               }
+               if((retval = target_read_u16(target, bank->base + 0x2, &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->type->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->type->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
@@ -1923,20 +2192,30 @@ 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);
+               if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x55), 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);
 
-               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]);
+               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);
-                       target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+                       if((retval = target->type->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->type->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;
                }
 
@@ -1945,7 +2224,7 @@ int cfi_probe(struct flash_bank_s *bank)
                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);
@@ -1960,29 +2239,24 @@ 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%x, 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)
                {
@@ -1990,7 +2264,7 @@ 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]: %i blocks of size 0x%x", i, (cfi_info->erase_region_info[i] & 0xffff) + 1, (cfi_info->erase_region_info[i] >> 16) * 256);
                        }
                }
                else
@@ -2010,10 +2284,11 @@ 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;
                }
 
@@ -2021,10 +2296,16 @@ 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->type->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->type->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)
@@ -2039,10 +2320,15 @@ 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%x size, but a 0x%x 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 */
@@ -2056,6 +2342,8 @@ int cfi_probe(struct flash_bank_s *bank)
        }
        else
        {
+               u32 offset = 0;
+
                for (i = 0; i < cfi_info->num_erase_regions; i++)
                {
                        num_sectors += (cfi_info->erase_region_info[i] & 0xffff) + 1;
@@ -2066,7 +2354,7 @@ int cfi_probe(struct flash_bank_s *bank)
 
                for (i = 0; i < cfi_info->num_erase_regions; i++)
                {
-                       int j;
+                       u32 j;
                        for (j = 0; j < (cfi_info->erase_region_info[i] & 0xffff) + 1; j++)
                        {
                                bank->sectors[sector].offset = offset;
@@ -2077,14 +2365,18 @@ int cfi_probe(struct flash_bank_s *bank)
                                sector++;
                        }
                }
+               if (offset != cfi_info->dev_size)
+               {
+                       LOG_WARNING("CFI size is 0x%x, but total sector size is 0x%x", cfi_info->dev_size, 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;
        if (cfi_info->probed)
@@ -2092,124 +2384,10 @@ int cfi_auto_probe(struct flash_bank_s *bank)
        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 (bank->target->state != TARGET_HALTED)
-       {
-               return ERROR_TARGET_NOT_HALTED;
-       }
-
-       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)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
@@ -2221,7 +2399,10 @@ 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->type->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++)
        {
@@ -2234,13 +2415,12 @@ 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->type->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)
 {
+       int retval;
        cfi_flash_bank_t *cfi_info = bank->driver_priv;
        cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
        target_t *target = bank->target;
@@ -2248,13 +2428,22 @@ int cfi_spansion_protect_check(struct flash_bank_s *bank)
        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->type->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->type->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->type->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++)
        {
@@ -2267,17 +2456,16 @@ 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->type->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;
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -2294,14 +2482,14 @@ 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;
@@ -2313,7 +2501,7 @@ int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
        }
 
        if (cfi_info->not_cfi == 0)
-       printed = snprintf(buf, buf_size, "\ncfi information:\n");
+               printed = snprintf(buf, buf_size, "\ncfi information:\n");
        else
                printed = snprintf(buf, buf_size, "\nnon-cfi flash:\n");
        buf += printed;
@@ -2355,9 +2543,9 @@ int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
        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->dev_size,
                                   cfi_info->interface_desc,
-                                  cfi_info->max_buf_write_size);
+                                  1 << cfi_info->max_buf_write_size);
        buf += printed;
        buf_size -= printed;
 
@@ -2371,7 +2559,7 @@ 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;
        }
        }

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