jtag: linuxgpiod: drop extra parenthesis
[openocd.git] / src / flash / nor / cfi.c
index bf313ec956c4266dc549b032bb612a3e6bbf06d7..78bc91e7d02d93a668cebdc95658258a18ea2e4f 100644 (file)
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 /***************************************************************************
  *   Copyright (C) 2005, 2007 by Dominic Rath                              *
  *   Dominic.Rath@gmx.de                                                   *
@@ -5,21 +7,6 @@
  *   michael@schwingen.org                                                 *
  *   Copyright (C) 2010 Ã˜yvind Harboe <oyvind.harboe@zylin.com>            *
  *   Copyright (C) 2010 by Antonio Borneo <borneo.antonio@gmail.com>       *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
@@ -36,9 +23,6 @@
 #include <helper/binarybuffer.h>
 #include <target/algorithm.h>
 
-#define CFI_MAX_BUS_WIDTH       4
-#define CFI_MAX_CHIP_WIDTH      4
-
 /* defines internal maximum size for code fragment in cfi_intel_write_block() */
 #define CFI_MAX_INTEL_CODESIZE 256
 
@@ -105,16 +89,15 @@ static const struct cfi_fixup cfi_0001_fixups[] = {
 static void cfi_fixup(struct flash_bank *bank, const struct cfi_fixup *fixups)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
-       const struct cfi_fixup *f;
 
-       for (f = fixups; f->fixup; f++) {
+       for (const struct cfi_fixup *f = fixups; f->fixup; f++) {
                if (((f->mfr == CFI_MFR_ANY) || (f->mfr == cfi_info->manufacturer)) &&
                                ((f->id  == CFI_ID_ANY)  || (f->id  == cfi_info->device_id)))
                        f->fixup(bank, f->param);
        }
 }
 
-static inline uint32_t flash_address(struct flash_bank *bank, int sector, uint32_t offset)
+uint32_t cfi_flash_address(struct flash_bank *bank, int sector, uint32_t offset)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
@@ -133,32 +116,55 @@ static inline uint32_t flash_address(struct flash_bank *bank, int sector, uint32
        }
 }
 
+static int cfi_target_write_memory(struct flash_bank *bank, target_addr_t addr,
+                                  uint32_t count, const uint8_t *buffer)
+{
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       if (cfi_info->write_mem) {
+               return cfi_info->write_mem(bank, addr, count, buffer);
+       } else {
+               return target_write_memory(bank->target, addr, bank->bus_width,
+                                          count, buffer);
+       }
+}
+
+int cfi_target_read_memory(struct flash_bank *bank, target_addr_t addr,
+                          uint32_t count, uint8_t *buffer)
+{
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       if (cfi_info->read_mem) {
+               return cfi_info->read_mem(bank, addr, count, buffer);
+       } else {
+               return target_read_memory(bank->target, addr, bank->bus_width,
+                                         count, buffer);
+       }
+}
+
 static void cfi_command(struct flash_bank *bank, uint8_t cmd, uint8_t *cmd_buf)
 {
-       int i;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
        /* clear whole buffer, to ensure bits that exceed the bus_width
         * are set to zero
         */
-       for (i = 0; i < CFI_MAX_BUS_WIDTH; i++)
+       for (size_t i = 0; i < CFI_MAX_BUS_WIDTH; i++)
                cmd_buf[i] = 0;
 
        if (cfi_info->endianness == TARGET_LITTLE_ENDIAN) {
-               for (i = bank->bus_width; i > 0; i--)
+               for (unsigned int i = bank->bus_width; i > 0; i--)
                        *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
        } else {
-               for (i = 1; i <= bank->bus_width; i++)
+               for (unsigned int i = 1; i <= bank->bus_width; i++)
                        *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
        }
 }
 
-static int cfi_send_command(struct flash_bank *bank, uint8_t cmd, uint32_t address)
+int cfi_send_command(struct flash_bank *bank, uint8_t cmd, uint32_t address)
 {
        uint8_t command[CFI_MAX_BUS_WIDTH];
 
        cfi_command(bank, cmd, command);
-       return target_write_memory(bank->target, address, bank->bus_width, 1, command);
+       return cfi_target_write_memory(bank, address, 1, command);
 }
 
 /* read unsigned 8-bit value from the bank
@@ -167,13 +173,12 @@ static int cfi_send_command(struct flash_bank *bank, uint8_t cmd, uint32_t addre
  */
 static int cfi_query_u8(struct flash_bank *bank, int sector, uint32_t offset, uint8_t *val)
 {
-       struct target *target = bank->target;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        uint8_t data[CFI_MAX_BUS_WIDTH];
 
        int retval;
-       retval = target_read_memory(target, flash_address(bank, sector, offset),
-                       bank->bus_width, 1, data);
+       retval = cfi_target_read_memory(bank, cfi_flash_address(bank, sector, offset),
+                                       1, data);
        if (retval != ERROR_OK)
                return retval;
 
@@ -191,25 +196,23 @@ static int cfi_query_u8(struct flash_bank *bank, int sector, uint32_t offset, ui
  */
 static int cfi_get_u8(struct flash_bank *bank, int sector, uint32_t offset, uint8_t *val)
 {
-       struct target *target = bank->target;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        uint8_t data[CFI_MAX_BUS_WIDTH];
-       int i;
 
        int retval;
-       retval = target_read_memory(target, flash_address(bank, sector, offset),
-                       bank->bus_width, 1, data);
+       retval = cfi_target_read_memory(bank, cfi_flash_address(bank, sector, offset),
+                                       1, data);
        if (retval != ERROR_OK)
                return retval;
 
        if (cfi_info->endianness == TARGET_LITTLE_ENDIAN) {
-               for (i = 0; i < bank->bus_width / bank->chip_width; i++)
+               for (unsigned int i = 0; i < bank->bus_width / bank->chip_width; i++)
                        data[0] |= data[i];
 
                *val = data[0];
        } else {
                uint8_t value = 0;
-               for (i = 0; i < bank->bus_width / bank->chip_width; i++)
+               for (unsigned int i = 0; i < bank->bus_width / bank->chip_width; i++)
                        value |= data[bank->bus_width - 1 - i];
 
                *val = value;
@@ -219,22 +222,20 @@ static int cfi_get_u8(struct flash_bank *bank, int sector, uint32_t offset, uint
 
 static int cfi_query_u16(struct flash_bank *bank, int sector, uint32_t offset, uint16_t *val)
 {
-       struct target *target = bank->target;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        uint8_t data[CFI_MAX_BUS_WIDTH * 2];
        int retval;
 
        if (cfi_info->x16_as_x8) {
-               uint8_t i;
-               for (i = 0; i < 2; i++) {
-                       retval = target_read_memory(target, flash_address(bank, sector, offset + i),
-                                       bank->bus_width, 1, &data[i * bank->bus_width]);
+               for (uint8_t i = 0; i < 2; i++) {
+                       retval = cfi_target_read_memory(bank, cfi_flash_address(bank, sector, offset + i),
+                                                       1, &data[i * bank->bus_width]);
                        if (retval != ERROR_OK)
                                return retval;
                }
        } else {
-               retval = target_read_memory(target, flash_address(bank, sector, offset),
-                               bank->bus_width, 2, data);
+               retval = cfi_target_read_memory(bank, cfi_flash_address(bank, sector, offset),
+                                               2, data);
                if (retval != ERROR_OK)
                        return retval;
        }
@@ -249,22 +250,20 @@ static int cfi_query_u16(struct flash_bank *bank, int sector, uint32_t offset, u
 
 static int cfi_query_u32(struct flash_bank *bank, int sector, uint32_t offset, uint32_t *val)
 {
-       struct target *target = bank->target;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        uint8_t data[CFI_MAX_BUS_WIDTH * 4];
        int retval;
 
        if (cfi_info->x16_as_x8) {
-               uint8_t i;
-               for (i = 0; i < 4; i++) {
-                       retval = target_read_memory(target, flash_address(bank, sector, offset + i),
-                                       bank->bus_width, 1, &data[i * bank->bus_width]);
+               for (uint8_t i = 0; i < 4; i++) {
+                       retval = cfi_target_read_memory(bank, cfi_flash_address(bank, sector, offset + i),
+                                                       1, &data[i * bank->bus_width]);
                        if (retval != ERROR_OK)
                                return retval;
                }
        } else {
-               retval = target_read_memory(target, flash_address(bank, sector, offset),
-                               bank->bus_width, 4, data);
+               retval = cfi_target_read_memory(bank, cfi_flash_address(bank, sector, offset),
+                                               4, data);
                if (retval != ERROR_OK)
                        return retval;
        }
@@ -280,16 +279,16 @@ static int cfi_query_u32(struct flash_bank *bank, int sector, uint32_t offset, u
        return ERROR_OK;
 }
 
-static int cfi_reset(struct flash_bank *bank)
+int cfi_reset(struct flash_bank *bank)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        int retval = ERROR_OK;
 
-       retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+       retval = cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
        if (retval != ERROR_OK)
                return retval;
 
-       retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+       retval = cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
        if (retval != ERROR_OK)
                return retval;
 
@@ -297,7 +296,7 @@ static int cfi_reset(struct flash_bank *bank)
                        (cfi_info->device_id == 0x227E || cfi_info->device_id == 0x7E)) {
                /* Numonix M29W128G is cmd 0xFF intolerant - causes internal undefined state
                 * so we send an extra 0xF0 reset to fix the bug */
-               retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x00));
+               retval = cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x00));
                if (retval != ERROR_OK)
                        return retval;
        }
@@ -307,7 +306,7 @@ static int cfi_reset(struct flash_bank *bank)
 
 static void cfi_intel_clear_status_register(struct flash_bank *bank)
 {
-       cfi_send_command(bank, 0x50, flash_address(bank, 0, 0x0));
+       cfi_send_command(bank, 0x50, cfi_flash_address(bank, 0, 0x0));
 }
 
 static int cfi_intel_wait_status_busy(struct flash_bank *bank, int timeout, uint8_t *val)
@@ -361,7 +360,7 @@ static int cfi_intel_wait_status_busy(struct flash_bank *bank, int timeout, uint
        return retval;
 }
 
-static int cfi_spansion_wait_status_busy(struct flash_bank *bank, int timeout)
+int cfi_spansion_wait_status_busy(struct flash_bank *bank, int timeout)
 {
        uint8_t status, oldstatus;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
@@ -413,11 +412,10 @@ static int cfi_read_intel_pri_ext(struct flash_bank *bank)
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_intel_pri_ext *pri_ext;
 
-       if (cfi_info->pri_ext)
-               free(cfi_info->pri_ext);
+       free(cfi_info->pri_ext);
 
        pri_ext = malloc(sizeof(struct cfi_intel_pri_ext));
-       if (pri_ext == NULL) {
+       if (!pri_ext) {
                LOG_ERROR("Out of memory");
                return ERROR_FAIL;
        }
@@ -510,11 +508,10 @@ static int cfi_read_spansion_pri_ext(struct flash_bank *bank)
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_spansion_pri_ext *pri_ext;
 
-       if (cfi_info->pri_ext)
-               free(cfi_info->pri_ext);
+       free(cfi_info->pri_ext);
 
        pri_ext = malloc(sizeof(struct cfi_spansion_pri_ext));
-       if (pri_ext == NULL) {
+       if (!pri_ext) {
                LOG_ERROR("Out of memory");
                return ERROR_FAIL;
        }
@@ -536,7 +533,7 @@ static int cfi_read_spansion_pri_ext(struct flash_bank *bank)
        pri_ext->_reversed_geometry = 0;
 
        if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I')) {
-               retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+               retval = cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
                if (retval != ERROR_OK)
                        return retval;
                LOG_ERROR("Could not read spansion bank information");
@@ -553,55 +550,55 @@ static int cfi_read_spansion_pri_ext(struct flash_bank *bank)
        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);
 
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 5, &pri_ext->SiliconRevision);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 5, &pri_ext->silicon_revision);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 6, &pri_ext->EraseSuspend);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 6, &pri_ext->erase_suspend);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 7, &pri_ext->BlkProt);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 7, &pri_ext->blk_prot);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 8, &pri_ext->TmpBlkUnprotect);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 8, &pri_ext->tmp_blk_unprotected);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 9, &pri_ext->BlkProtUnprot);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 9, &pri_ext->blk_prot_unprot);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 10, &pri_ext->SimultaneousOps);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 10, &pri_ext->simultaneous_ops);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 11, &pri_ext->BurstMode);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 11, &pri_ext->burst_mode);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 12, &pri_ext->PageMode);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 12, &pri_ext->page_mode);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 13, &pri_ext->VppMin);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 13, &pri_ext->vpp_min);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 14, &pri_ext->VppMax);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 14, &pri_ext->vpp_max);
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 15, &pri_ext->TopBottom);
+       retval = cfi_query_u8(bank, 0, cfi_info->pri_addr + 15, &pri_ext->top_bottom);
        if (retval != ERROR_OK)
                return retval;
 
        LOG_DEBUG("Silicon Revision: 0x%x, Erase Suspend: 0x%x, Block protect: 0x%x",
-               pri_ext->SiliconRevision, pri_ext->EraseSuspend, pri_ext->BlkProt);
+               pri_ext->silicon_revision, pri_ext->erase_suspend, pri_ext->blk_prot);
 
        LOG_DEBUG("Temporary Unprotect: 0x%x, Block Protect Scheme: 0x%x, "
-               "Simultaneous Ops: 0x%x", pri_ext->TmpBlkUnprotect,
-               pri_ext->BlkProtUnprot, pri_ext->SimultaneousOps);
+               "Simultaneous Ops: 0x%x", pri_ext->tmp_blk_unprotected,
+               pri_ext->blk_prot_unprot, pri_ext->simultaneous_ops);
 
-       LOG_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->burst_mode, pri_ext->page_mode);
 
 
        LOG_DEBUG("Vpp min: %u.%x, Vpp max: %u.%x",
-               (pri_ext->VppMin & 0xf0) >> 4, pri_ext->VppMin & 0x0f,
-               (pri_ext->VppMax & 0xf0) >> 4, pri_ext->VppMax & 0x0f);
+               (pri_ext->vpp_min & 0xf0) >> 4, pri_ext->vpp_min & 0x0f,
+               (pri_ext->vpp_max & 0xf0) >> 4, pri_ext->vpp_max & 0x0f);
 
-       LOG_DEBUG("WP# protection 0x%x", pri_ext->TopBottom);
+       LOG_DEBUG("WP# protection 0x%x", pri_ext->top_bottom);
 
        return ERROR_OK;
 }
@@ -613,11 +610,10 @@ static int cfi_read_atmel_pri_ext(struct flash_bank *bank)
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_spansion_pri_ext *pri_ext;
 
-       if (cfi_info->pri_ext)
-               free(cfi_info->pri_ext);
+       free(cfi_info->pri_ext);
 
        pri_ext = malloc(sizeof(struct cfi_spansion_pri_ext));
-       if (pri_ext == NULL) {
+       if (!pri_ext) {
                LOG_ERROR("Out of memory");
                return ERROR_FAIL;
        }
@@ -643,7 +639,7 @@ static int cfi_read_atmel_pri_ext(struct flash_bank *bank)
 
        if ((atmel_pri_ext.pri[0] != 'P') || (atmel_pri_ext.pri[1] != 'R')
                        || (atmel_pri_ext.pri[2] != 'I')) {
-               retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+               retval = cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
                if (retval != ERROR_OK)
                        return retval;
                LOG_ERROR("Could not read atmel bank information");
@@ -689,20 +685,20 @@ static int cfi_read_atmel_pri_ext(struct flash_bank *bank)
                atmel_pri_ext.page_mode);
 
        if (atmel_pri_ext.features & 0x02)
-               pri_ext->EraseSuspend = 2;
+               pri_ext->erase_suspend = 2;
 
        /* some chips got it backwards... */
        if (cfi_info->device_id == AT49BV6416 ||
                        cfi_info->device_id == AT49BV6416T) {
                if (atmel_pri_ext.bottom_boot)
-                       pri_ext->TopBottom = 3;
+                       pri_ext->top_bottom = 3;
                else
-                       pri_ext->TopBottom = 2;
+                       pri_ext->top_bottom = 2;
        } else {
                if (atmel_pri_ext.bottom_boot)
-                       pri_ext->TopBottom = 2;
+                       pri_ext->top_bottom = 2;
                else
-                       pri_ext->TopBottom = 3;
+                       pri_ext->top_bottom = 3;
        }
 
        pri_ext->_unlock1 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock1;
@@ -721,79 +717,57 @@ static int cfi_read_0002_pri_ext(struct flash_bank *bank)
                return cfi_read_spansion_pri_ext(bank);
 }
 
-static int cfi_spansion_info(struct flash_bank *bank, char *buf, int buf_size)
+static int cfi_spansion_info(struct flash_bank *bank, struct command_invocation *cmd)
 {
-       int printed;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
 
-       printed = snprintf(buf, buf_size, "\nSpansion primary algorithm extend information:\n");
-       buf += printed;
-       buf_size -= printed;
+       command_print_sameline(cmd, "\nSpansion primary algorithm extend information:\n");
 
-       printed = snprintf(buf, buf_size, "pri: '%c%c%c', version: %c.%c\n", pri_ext->pri[0],
-                       pri_ext->pri[1], pri_ext->pri[2],
+       command_print_sameline(cmd, "pri: '%c%c%c', version: %c.%c\n",
+                       pri_ext->pri[0], pri_ext->pri[1], pri_ext->pri[2],
                        pri_ext->major_version, pri_ext->minor_version);
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "Silicon Rev.: 0x%x, Address Sensitive unlock: 0x%x\n",
-                       (pri_ext->SiliconRevision) >> 2,
-                       (pri_ext->SiliconRevision) & 0x03);
-       buf += printed;
-       buf_size -= printed;
+       command_print_sameline(cmd, "Silicon Rev.: 0x%x, Address Sensitive unlock: 0x%x\n",
+                       (pri_ext->silicon_revision) >> 2,
+                       (pri_ext->silicon_revision) & 0x03);
 
-       printed = snprintf(buf, buf_size, "Erase Suspend: 0x%x, Sector Protect: 0x%x\n",
-                       pri_ext->EraseSuspend,
-                       pri_ext->BlkProt);
-       buf += printed;
-       buf_size -= printed;
+       command_print_sameline(cmd, "Erase Suspend: 0x%x, Sector Protect: 0x%x\n",
+                       pri_ext->erase_suspend,
+                       pri_ext->blk_prot);
 
-       snprintf(buf, buf_size, "VppMin: %u.%x, VppMax: %u.%x\n",
-               (pri_ext->VppMin & 0xf0) >> 4, pri_ext->VppMin & 0x0f,
-               (pri_ext->VppMax & 0xf0) >> 4, pri_ext->VppMax & 0x0f);
+       command_print_sameline(cmd, "VppMin: %u.%x, VppMax: %u.%x\n",
+               (pri_ext->vpp_min & 0xf0) >> 4, pri_ext->vpp_min & 0x0f,
+               (pri_ext->vpp_max & 0xf0) >> 4, pri_ext->vpp_max & 0x0f);
 
        return ERROR_OK;
 }
 
-static int cfi_intel_info(struct flash_bank *bank, char *buf, int buf_size)
+static int cfi_intel_info(struct flash_bank *bank, struct command_invocation *cmd)
 {
-       int printed;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
 
-       printed = snprintf(buf, buf_size, "\nintel primary algorithm extend information:\n");
-       buf += printed;
-       buf_size -= printed;
+       command_print_sameline(cmd, "\nintel primary algorithm extend information:\n");
 
-       printed = snprintf(buf,
-                       buf_size,
-                       "pri: '%c%c%c', version: %c.%c\n",
+       command_print_sameline(cmd, "pri: '%c%c%c', version: %c.%c\n",
                        pri_ext->pri[0],
                        pri_ext->pri[1],
                        pri_ext->pri[2],
                        pri_ext->major_version,
                        pri_ext->minor_version);
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf,
-                       buf_size,
-                       "feature_support: 0x%" PRIx32 ", "
+       command_print_sameline(cmd, "feature_support: 0x%" PRIx32 ", "
                        "suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x\n",
                        pri_ext->feature_support,
                        pri_ext->suspend_cmd_support,
                        pri_ext->blk_status_reg_mask);
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "Vcc opt: %x.%x, Vpp opt: %u.%x\n",
+       command_print_sameline(cmd, "Vcc opt: %x.%x, Vpp opt: %u.%x\n",
                        (pri_ext->vcc_optimal & 0xf0) >> 4, pri_ext->vcc_optimal & 0x0f,
                        (pri_ext->vpp_optimal & 0xf0) >> 4, pri_ext->vpp_optimal & 0x0f);
-       buf += printed;
-       buf_size -= printed;
 
-       snprintf(buf, buf_size, "protection_fields: %i, prot_reg_addr: 0x%x, "
+       command_print_sameline(cmd, "protection_fields: %i, prot_reg_addr: 0x%x, "
                "factory pre-programmed: %i, user programmable: %i\n",
                pri_ext->num_protection_fields, pri_ext->prot_reg_addr,
                1 << pri_ext->fact_prot_reg_size, 1 << pri_ext->user_prot_reg_size);
@@ -801,14 +775,12 @@ static int cfi_intel_info(struct flash_bank *bank, char *buf, int buf_size)
        return ERROR_OK;
 }
 
-/* flash_bank cfi <base> <size> <chip_width> <bus_width> <target#> [options]
- */
-FLASH_BANK_COMMAND_HANDLER(cfi_flash_bank_command)
+int cfi_flash_bank_cmd(struct flash_bank *bank, unsigned int argc, const char **argv)
 {
        struct cfi_flash_bank *cfi_info;
-       int bus_swap = 0;
+       bool bus_swap = false;
 
-       if (CMD_ARGC < 6)
+       if (argc < 6)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        /* both widths must:
@@ -827,23 +799,22 @@ FLASH_BANK_COMMAND_HANDLER(cfi_flash_bank_command)
                return ERROR_FLASH_BANK_INVALID;
        }
 
-       cfi_info = malloc(sizeof(struct cfi_flash_bank));
-       cfi_info->probed = 0;
-       cfi_info->erase_region_info = NULL;
-       cfi_info->pri_ext = NULL;
+       cfi_info = calloc(1, sizeof(struct cfi_flash_bank));
+       if (!cfi_info) {
+               LOG_ERROR("No memory for flash bank info");
+               return ERROR_FAIL;
+       }
        bank->driver_priv = cfi_info;
 
-       cfi_info->x16_as_x8 = 0;
-       cfi_info->jedec_probe = 0;
-       cfi_info->not_cfi = 0;
-
-       for (unsigned i = 6; i < CMD_ARGC; i++) {
-               if (strcmp(CMD_ARGV[i], "x16_as_x8") == 0)
-                       cfi_info->x16_as_x8 = 1;
-               else if (strcmp(CMD_ARGV[i], "bus_swap") == 0)
-                       bus_swap = 1;
-               else if (strcmp(CMD_ARGV[i], "jedec_probe") == 0)
-                       cfi_info->jedec_probe = 1;
+       for (unsigned i = 6; i < argc; i++) {
+               if (strcmp(argv[i], "x16_as_x8") == 0)
+                       cfi_info->x16_as_x8 = true;
+               else if (strcmp(argv[i], "data_swap") == 0)
+                       cfi_info->data_swap = true;
+               else if (strcmp(argv[i], "bus_swap") == 0)
+                       bus_swap = true;
+               else if (strcmp(argv[i], "jedec_probe") == 0)
+                       cfi_info->jedec_probe = true;
        }
 
        if (bus_swap)
@@ -859,20 +830,27 @@ FLASH_BANK_COMMAND_HANDLER(cfi_flash_bank_command)
        return ERROR_OK;
 }
 
-static int cfi_intel_erase(struct flash_bank *bank, int first, int last)
+/* flash_bank cfi <base> <size> <chip_width> <bus_width> <target#> [options]
+ */
+FLASH_BANK_COMMAND_HANDLER(cfi_flash_bank_command)
+{
+       return cfi_flash_bank_cmd(bank, CMD_ARGC, CMD_ARGV);
+}
+
+static int cfi_intel_erase(struct flash_bank *bank, unsigned int first,
+               unsigned int last)
 {
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
-       int i;
 
        cfi_intel_clear_status_register(bank);
 
-       for (i = first; i <= last; i++) {
-               retval = cfi_send_command(bank, 0x20, flash_address(bank, i, 0x0));
+       for (unsigned int i = first; i <= last; i++) {
+               retval = cfi_send_command(bank, 0x20, cfi_flash_address(bank, i, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
-               retval = cfi_send_command(bank, 0xd0, flash_address(bank, i, 0x0));
+               retval = cfi_send_command(bank, 0xd0, cfi_flash_address(bank, i, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
@@ -881,71 +859,77 @@ static int cfi_intel_erase(struct flash_bank *bank, int first, int last)
                if (retval != ERROR_OK)
                        return retval;
 
-               if (status == 0x80)
-                       bank->sectors[i].is_erased = 1;
-               else {
-                       retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+               if (status != 0x80) {
+                       retval = cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
                        if (retval != ERROR_OK)
                                return retval;
 
-                       LOG_ERROR("couldn't erase block %i of flash bank at base 0x%"
-                                       PRIx32, i, bank->base);
+                       LOG_ERROR("couldn't erase block %u of flash bank at base "
+                                       TARGET_ADDR_FMT, i, bank->base);
                        return ERROR_FLASH_OPERATION_FAILED;
                }
        }
 
-       return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+       return cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
 }
 
-static int cfi_spansion_erase(struct flash_bank *bank, int first, int last)
+int cfi_spansion_unlock_seq(struct flash_bank *bank)
 {
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
-       int i;
 
-       for (i = first; i <= last; i++) {
-               retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1));
-               if (retval != ERROR_OK)
-                       return retval;
+       retval = cfi_send_command(bank, 0xaa, cfi_flash_address(bank, 0, pri_ext->_unlock1));
+       if (retval != ERROR_OK)
+               return retval;
 
-               retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2));
-               if (retval != ERROR_OK)
-                       return retval;
+       retval = cfi_send_command(bank, 0x55, cfi_flash_address(bank, 0, pri_ext->_unlock2));
+       if (retval != ERROR_OK)
+               return retval;
+
+       return ERROR_OK;
+}
+
+static int cfi_spansion_erase(struct flash_bank *bank, unsigned int first,
+               unsigned int last)
+{
+       int retval;
+       struct cfi_flash_bank *cfi_info = bank->driver_priv;
+       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
 
-               retval = cfi_send_command(bank, 0x80, flash_address(bank, 0, pri_ext->_unlock1));
+       for (unsigned int i = first; i <= last; i++) {
+               retval = cfi_spansion_unlock_seq(bank);
                if (retval != ERROR_OK)
                        return retval;
 
-               retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1));
+               retval = cfi_send_command(bank, 0x80, cfi_flash_address(bank, 0, pri_ext->_unlock1));
                if (retval != ERROR_OK)
                        return retval;
 
-               retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2));
+               retval = cfi_spansion_unlock_seq(bank);
                if (retval != ERROR_OK)
                        return retval;
 
-               retval = cfi_send_command(bank, 0x30, flash_address(bank, i, 0x0));
+               retval = cfi_send_command(bank, 0x30, cfi_flash_address(bank, i, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
-               if (cfi_spansion_wait_status_busy(bank, cfi_info->block_erase_timeout) == ERROR_OK)
-                       bank->sectors[i].is_erased = 1;
-               else {
-                       retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+               if (cfi_spansion_wait_status_busy(bank, cfi_info->block_erase_timeout) != ERROR_OK) {
+                       retval = cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
                        if (retval != ERROR_OK)
                                return retval;
 
-                       LOG_ERROR("couldn't erase block %i of flash bank at base 0x%"
-                               PRIx32, i, bank->base);
+                       LOG_ERROR("couldn't erase block %i of flash bank at base "
+                               TARGET_ADDR_FMT, i, bank->base);
                        return ERROR_FLASH_OPERATION_FAILED;
                }
        }
 
-       return cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+       return cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
 }
 
-static int cfi_erase(struct flash_bank *bank, int first, int last)
+int cfi_erase(struct flash_bank *bank, unsigned int first,
+               unsigned int last)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
@@ -954,7 +938,7 @@ static int cfi_erase(struct flash_bank *bank, int first, int last)
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if ((first < 0) || (last < first) || (last >= bank->num_sectors))
+       if ((last < first) || (last >= bank->num_sectors))
                return ERROR_FLASH_SECTOR_INVALID;
 
        if (cfi_info->qry[0] != 'Q')
@@ -964,10 +948,8 @@ static int cfi_erase(struct flash_bank *bank, int first, int last)
                case 1:
                case 3:
                        return cfi_intel_erase(bank, first, last);
-                       break;
                case 2:
                        return cfi_spansion_erase(bank, first, last);
-                       break;
                default:
                        LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
@@ -976,13 +958,13 @@ static int cfi_erase(struct flash_bank *bank, int first, int last)
        return ERROR_OK;
 }
 
-static int cfi_intel_protect(struct flash_bank *bank, int set, int first, int last)
+static int cfi_intel_protect(struct flash_bank *bank, int set,
+               unsigned int first, unsigned int last)
 {
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
        int retry = 0;
-       int i;
 
        /* if the device supports neither legacy lock/unlock (bit 3) nor
         * instant individual block locking (bit 5).
@@ -994,17 +976,17 @@ static int cfi_intel_protect(struct flash_bank *bank, int set, int first, int la
 
        cfi_intel_clear_status_register(bank);
 
-       for (i = first; i <= last; i++) {
-               retval = cfi_send_command(bank, 0x60, flash_address(bank, i, 0x0));
+       for (unsigned int i = first; i <= last; i++) {
+               retval = cfi_send_command(bank, 0x60, cfi_flash_address(bank, i, 0x0));
                if (retval != ERROR_OK)
                        return retval;
                if (set) {
-                       retval = cfi_send_command(bank, 0x01, flash_address(bank, i, 0x0));
+                       retval = cfi_send_command(bank, 0x01, cfi_flash_address(bank, i, 0x0));
                        if (retval != ERROR_OK)
                                return retval;
                        bank->sectors[i].is_protected = 1;
                } else {
-                       retval = cfi_send_command(bank, 0xd0, flash_address(bank, i, 0x0));
+                       retval = cfi_send_command(bank, 0xd0, cfi_flash_address(bank, i, 0x0));
                        if (retval != ERROR_OK)
                                return retval;
                        bank->sectors[i].is_protected = 0;
@@ -1021,7 +1003,7 @@ static int cfi_intel_protect(struct flash_bank *bank, int set, int first, int la
                } else {
                        uint8_t block_status;
                        /* read block lock bit, to verify status */
-                       retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, 0x55));
+                       retval = cfi_send_command(bank, 0x90, cfi_flash_address(bank, 0, 0x55));
                        if (retval != ERROR_OK)
                                return retval;
                        retval = cfi_get_u8(bank, i, 0x2, &block_status);
@@ -1032,7 +1014,7 @@ static int cfi_intel_protect(struct flash_bank *bank, int set, int first, int la
                                LOG_ERROR(
                                        "couldn't change block lock status (set = %i, block_status = 0x%2.2x)",
                                        set, block_status);
-                               retval = cfi_send_command(bank, 0x70, flash_address(bank, 0, 0x55));
+                               retval = cfi_send_command(bank, 0x70, cfi_flash_address(bank, 0, 0x55));
                                if (retval != ERROR_OK)
                                        return retval;
                                uint8_t status;
@@ -1065,15 +1047,15 @@ static int cfi_intel_protect(struct flash_bank *bank, int set, int first, int la
                 * 3. re-protect what should be protected.
                 *
                 */
-               for (i = 0; i < bank->num_sectors; i++) {
+               for (unsigned int i = 0; i < bank->num_sectors; i++) {
                        if (bank->sectors[i].is_protected == 1) {
                                cfi_intel_clear_status_register(bank);
 
-                               retval = cfi_send_command(bank, 0x60, flash_address(bank, i, 0x0));
+                               retval = cfi_send_command(bank, 0x60, cfi_flash_address(bank, i, 0x0));
                                if (retval != ERROR_OK)
                                        return retval;
 
-                               retval = cfi_send_command(bank, 0x01, flash_address(bank, i, 0x0));
+                               retval = cfi_send_command(bank, 0x01, cfi_flash_address(bank, i, 0x0));
                                if (retval != ERROR_OK)
                                        return retval;
 
@@ -1085,10 +1067,11 @@ static int cfi_intel_protect(struct flash_bank *bank, int set, int first, int la
                }
        }
 
-       return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+       return cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
 }
 
-static int cfi_protect(struct flash_bank *bank, int set, int first, int last)
+int cfi_protect(struct flash_bank *bank, int set, unsigned int first,
+               unsigned int last)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
@@ -1097,11 +1080,6 @@ static int cfi_protect(struct flash_bank *bank, int set, int first, int last)
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if ((first < 0) || (last < first) || (last >= bank->num_sectors)) {
-               LOG_ERROR("Invalid sector range");
-               return ERROR_FLASH_SECTOR_INVALID;
-       }
-
        if (cfi_info->qry[0] != 'Q')
                return ERROR_FLASH_BANK_NOT_PROBED;
 
@@ -1109,7 +1087,6 @@ static int cfi_protect(struct flash_bank *bank, int set, int first, int last)
                case 1:
                case 3:
                        return cfi_intel_protect(bank, set, first, last);
-                       break;
                default:
                        LOG_WARNING("protect: cfi primary command set %i unsupported", cfi_info->pri_id);
                        return ERROR_OK;
@@ -1125,15 +1102,12 @@ static uint32_t cfi_command_val(struct flash_bank *bank, uint8_t cmd)
        switch (bank->bus_width) {
                case 1:
                        return buf[0];
-                       break;
                case 2:
                        return target_buffer_get_u16(target, buf);
-                       break;
                case 4:
                        return target_buffer_get_u32(target, buf);
-                       break;
                default:
-                       LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes",
+                       LOG_ERROR("Unsupported bank buswidth %u, can't do block memory writes",
                                        bank->bus_width);
                        return 0;
        }
@@ -1160,7 +1134,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
         * r6: error test pattern
         */
 
-       /* see contib/loaders/flash/armv4_5_cfi_intel_32.s for src */
+       /* see contrib/loaders/flash/armv4_5_cfi_intel_32.s for src */
        static const uint32_t word_32_code[] = {
                0xe4904004,     /* loop: ldr r4, [r0], #4 */
                0xe5813000,     /*       str r3, [r1] */
@@ -1178,7 +1152,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
                0xeafffffe      /* done: b -2 */
        };
 
-       /* see contib/loaders/flash/armv4_5_cfi_intel_16.s for src */
+       /* see contrib/loaders/flash/armv4_5_cfi_intel_16.s for src */
        static const uint32_t word_16_code[] = {
                0xe0d040b2,     /* loop: ldrh r4, [r0], #2 */
                0xe1c130b0,     /*       strh r3, [r1] */
@@ -1196,7 +1170,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
                0xeafffffe      /* done:        b -2 */
        };
 
-       /* see contib/loaders/flash/armv4_5_cfi_intel_8.s for src */
+       /* see contrib/loaders/flash/armv4_5_cfi_intel_8.s for src */
        static const uint32_t word_8_code[] = {
                0xe4d04001,     /* loop: ldrb r4, [r0], #1 */
                0xe5c13000,     /*       strb r3, [r1] */
@@ -1231,7 +1205,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
 
        cfi_intel_clear_status_register(bank);
 
-       /* If we are setting up the write_algorith, we need target_code_src
+       /* If we are setting up the write_algorithm, we need target_code_src
         * if not we only need target_code_size. */
 
        /* However, we don't want to create multiple code paths, so we
@@ -1253,7 +1227,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
                        target_code_size = sizeof(word_32_code);
                        break;
                default:
-                       LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes",
+                       LOG_ERROR("Unsupported bank buswidth %u, can't do block memory writes",
                                        bank->bus_width);
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
@@ -1311,7 +1285,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
        busy_pattern_val  = cfi_command_val(bank, 0x80);
        error_pattern_val = cfi_command_val(bank, 0x7e);
 
-       LOG_DEBUG("Using target buffer at 0x%08" PRIx32 " and of size 0x%04" PRIx32,
+       LOG_DEBUG("Using target buffer at " TARGET_ADDR_FMT " and of size 0x%04" PRIx32,
                source->address, buffer_size);
 
        /* Programming main loop */
@@ -1346,7 +1320,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
                if (retval != ERROR_OK) {
                        cfi_intel_clear_status_register(bank);
                        LOG_ERROR(
-                               "Execution of flash algorythm failed. Can't fall back. Please report.");
+                               "Execution of flash algorithm 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
@@ -1374,9 +1348,7 @@ static int cfi_intel_write_block(struct flash_bank *bank, const uint8_t *buffer,
 
        /* free up resources */
 cleanup:
-       if (source)
-               target_free_working_area(target, source);
-
+       target_free_working_area(target, source);
        target_free_working_area(target, write_algorithm);
 
        destroy_reg_param(&reg_params[0]);
@@ -1423,50 +1395,50 @@ static int cfi_spansion_write_block_mips(struct flash_bank *bank, const uint8_t
 
        static const uint32_t mips_word_16_code[] = {
                /* start:       */
-               MIPS32_LHU(9, 0, 4),                    /* lhu $t1, ($a0)               ; out = &saddr */
-               MIPS32_ADDI(4, 4, 2),                   /* addi $a0, $a0, 2             ; saddr += 2 */
-               MIPS32_SH(13, 0, 12),                   /* sh $t5, ($t4)                ; *fl_unl_addr1 = fl_unl_cmd1 */
-               MIPS32_SH(15, 0, 14),                   /* sh $t7, ($t6)                ; *fl_unl_addr2 = fl_unl_cmd2 */
-               MIPS32_SH(7, 0, 12),                    /* sh $a3, ($t4)                ; *fl_unl_addr1 = fl_write_cmd */
-               MIPS32_SH(9, 0, 5),                             /* sh $t1, ($a1)                ; *daddr = out */
+               MIPS32_LHU(0, 9, 0, 4),         /* lhu $t1, ($a0)               ; out = &saddr */
+               MIPS32_ADDI(0, 4, 4, 2),        /* addi $a0, $a0, 2             ; saddr += 2 */
+               MIPS32_SH(0, 13, 0, 12),        /* sh $t5, ($t4)                ; *fl_unl_addr1 = fl_unl_cmd1 */
+               MIPS32_SH(0, 15, 0, 14),        /* sh $t7, ($t6)                ; *fl_unl_addr2 = fl_unl_cmd2 */
+               MIPS32_SH(0, 7, 0, 12),         /* sh $a3, ($t4)                ; *fl_unl_addr1 = fl_write_cmd */
+               MIPS32_SH(0, 9, 0, 5),          /* sh $t1, ($a1)                ; *daddr = out */
                MIPS32_NOP,                                             /* nop */
                /* busy:        */
-               MIPS32_LHU(10, 0, 5),                   /* lhu $t2, ($a1)               ; temp1 = *daddr */
-               MIPS32_XOR(11, 9, 10),                  /* xor $t3, $a0, $t2    ; temp2 = out ^ temp1; */
-               MIPS32_AND(11, 8, 11),                  /* and $t3, $t0, $t3    ; temp2 = temp2 & DQ7mask */
-               MIPS32_BNE(11, 8, 13),                  /* bne $t3, $t0, cont   ; if (temp2 != DQ7mask) goto cont */
-               MIPS32_NOP,                                             /* nop                                                                  */
-
-               MIPS32_SRL(10, 8, 2),                   /* srl $t2,$t0,2                ; temp1 = DQ7mask >> 2 */
-               MIPS32_AND(11, 10, 11),                 /* and $t3, $t2, $t3    ; temp2 = temp2 & temp1 */
-               MIPS32_BNE(11, 10, NEG16(8)),   /* bne $t3, $t2, busy   ; if (temp2 != temp1) goto busy */
-               MIPS32_NOP,                                             /* nop                                                                  */
-
-               MIPS32_LHU(10, 0, 5),                   /* lhu $t2, ($a1)               ; temp1 = *daddr */
-               MIPS32_XOR(11, 9, 10),                  /* xor $t3, $a0, $t2    ; temp2 = out ^ temp1; */
-               MIPS32_AND(11, 8, 11),                  /* and $t3, $t0, $t3    ; temp2 = temp2 & DQ7mask */
-               MIPS32_BNE(11, 8, 4),                   /* bne $t3, $t0, cont   ; if (temp2 != DQ7mask) goto cont */
+               MIPS32_LHU(0, 10, 0, 5),                /* lhu $t2, ($a1)               ; temp1 = *daddr */
+               MIPS32_XOR(0, 11, 9, 10),               /* xor $t3, $a0, $t2    ; temp2 = out ^ temp1; */
+               MIPS32_AND(0, 11, 8, 11),               /* and $t3, $t0, $t3    ; temp2 = temp2 & DQ7mask */
+               MIPS32_BNE(0, 11, 8, 13),               /* bne $t3, $t0, cont   ; if (temp2 != DQ7mask) goto cont */
+               MIPS32_NOP,                                             /* nop                                  */
+
+               MIPS32_SRL(0, 10, 8, 2),                /* srl $t2,$t0,2                ; temp1 = DQ7mask >> 2 */
+               MIPS32_AND(0, 11, 10, 11),                      /* and $t3, $t2, $t3    ; temp2 = temp2 & temp1 */
+               MIPS32_BNE(0, 11, 10, NEG16(8)),        /* bne $t3, $t2, busy   ; if (temp2 != temp1) goto busy */
+               MIPS32_NOP,                                             /* nop                                  */
+
+               MIPS32_LHU(0, 10, 0, 5),                /* lhu $t2, ($a1)               ; temp1 = *daddr */
+               MIPS32_XOR(0, 11, 9, 10),               /* xor $t3, $a0, $t2    ; temp2 = out ^ temp1; */
+               MIPS32_AND(0, 11, 8, 11),               /* and $t3, $t0, $t3    ; temp2 = temp2 & DQ7mask */
+               MIPS32_BNE(0, 11, 8, 4),                /* bne $t3, $t0, cont   ; if (temp2 != DQ7mask) goto cont */
                MIPS32_NOP,                                             /* nop */
 
-               MIPS32_XOR(9, 9, 9),                    /* xor $t1, $t1, $t1    ; out = 0 */
-               MIPS32_BEQ(9, 0, 11),                   /* beq $t1, $zero, done ; if (out == 0) goto done */
+               MIPS32_XOR(0, 9, 9, 9),                 /* xor $t1, $t1, $t1    ; out = 0 */
+               MIPS32_BEQ(0, 9, 0, 11),                        /* beq $t1, $zero, done ; if (out == 0) goto done */
                MIPS32_NOP,                                             /* nop */
                /* cont:        */
-               MIPS32_ADDI(6, 6, NEG16(1)),    /* addi, $a2, $a2, -1   ; numwrites-- */
-               MIPS32_BNE(6, 0, 5),                    /* bne $a2, $zero, cont2        ; if (numwrite != 0) goto cont2 */
+               MIPS32_ADDI(0, 6, 6, NEG16(1)), /* addi, $a2, $a2, -1   ; numwrites-- */
+               MIPS32_BNE(0, 6, 0, 5),         /* bne $a2, $zero, cont2        ; if (numwrite != 0) goto cont2 */
                MIPS32_NOP,                                             /* nop */
 
-               MIPS32_LUI(9, 0),                               /* lui $t1, 0 */
-               MIPS32_ORI(9, 9, 0x80),                 /* ori $t1, $t1, 0x80   ; out = 0x80 */
+               MIPS32_LUI(0, 9, 0),                            /* lui $t1, 0 */
+               MIPS32_ORI(0, 9, 9, 0x80),                      /* ori $t1, $t1, 0x80   ; out = 0x80 */
 
-               MIPS32_B(4),                                    /* b done                       ; goto done */
+               MIPS32_B(0, 4),                                 /* b done                       ; goto done */
                MIPS32_NOP,                                             /* nop */
                /* cont2:       */
-               MIPS32_ADDI(5, 5, 2),                   /* addi $a0, $a0, 2     ; daddr += 2 */
-               MIPS32_B(NEG16(33)),                    /* b start                      ; goto start */
+               MIPS32_ADDI(0, 5, 5, 2),                        /* addi $a0, $a0, 2     ; daddr += 2 */
+               MIPS32_B(0, NEG16(33)),                 /* b start                      ; goto start */
                MIPS32_NOP,                                             /* nop */
                /* done: */
-               MIPS32_SDBBP,                                   /* sdbbp                        ; break(); */
+               MIPS32_SDBBP(0),                                        /* sdbbp                        ; break(); */
        };
 
        mips32_info.common_magic = MIPS32_COMMON_MAGIC;
@@ -1489,7 +1461,7 @@ static int cfi_spansion_write_block_mips(struct flash_bank *bank, const uint8_t
                        }
                        break;
                default:
-                       LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes",
+                       LOG_ERROR("Unsupported bank buswidth %u, can't do block memory writes",
                                        bank->bus_width);
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
@@ -1499,7 +1471,7 @@ static int cfi_spansion_write_block_mips(struct flash_bank *bank, const uint8_t
 
        /* convert bus-width dependent algorithm code to correct endianness */
        target_code = malloc(target_code_size);
-       if (target_code == NULL) {
+       if (!target_code) {
                LOG_ERROR("Out of memory");
                return ERROR_FAIL;
        }
@@ -1562,9 +1534,9 @@ static int cfi_spansion_write_block_mips(struct flash_bank *bank, const uint8_t
                buf_set_u32(reg_params[2].value, 0, 32, thisrun_count / bank->bus_width);
                buf_set_u32(reg_params[3].value, 0, 32, cfi_command_val(bank, 0xA0));
                buf_set_u32(reg_params[4].value, 0, 32, cfi_command_val(bank, 0x80));
-               buf_set_u32(reg_params[6].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock1));
+               buf_set_u32(reg_params[6].value, 0, 32, cfi_flash_address(bank, 0, pri_ext->_unlock1));
                buf_set_u32(reg_params[7].value, 0, 32, 0xaaaaaaaa);
-               buf_set_u32(reg_params[8].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock2));
+               buf_set_u32(reg_params[8].value, 0, 32, cfi_flash_address(bank, 0, pri_ext->_unlock2));
                buf_set_u32(reg_params[9].value, 0, 32, 0x55555555);
 
                retval = target_run_algorithm(target, 0, NULL, 10, reg_params,
@@ -1635,7 +1607,7 @@ static int cfi_spansion_write_block(struct flash_bank *bank, const uint8_t *buff
         *  R10 = unlock2_addr
         *  R11 = unlock2_cmd */
 
-       /* see contib/loaders/flash/armv4_5_cfi_span_32.s for src */
+       /* see contrib/loaders/flash/armv4_5_cfi_span_32.s for src */
        static const uint32_t armv4_5_word_32_code[] = {
                /* 00008100 <sp_32_code>:               */
                0xe4905004,             /* ldr  r5, [r0], #4                    */
@@ -1667,7 +1639,7 @@ static int cfi_spansion_write_block(struct flash_bank *bank, const uint8_t *buff
                0xeafffffe              /* b    8154 <sp_32_done>               */
        };
 
-       /* see contib/loaders/flash/armv4_5_cfi_span_16.s for src */
+       /* see contrib/loaders/flash/armv4_5_cfi_span_16.s for src */
        static const uint32_t armv4_5_word_16_code[] = {
                /* 00008158 <sp_16_code>:               */
                0xe0d050b2,             /* ldrh r5, [r0], #2                    */
@@ -1868,7 +1840,7 @@ static int cfi_spansion_write_block(struct flash_bank *bank, const uint8_t *buff
                        target_code_size = sizeof(armv4_5_word_32_code);
                        break;
                default:
-                       LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes",
+                       LOG_ERROR("Unsupported bank buswidth %u, can't do block memory writes",
                                        bank->bus_width);
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
@@ -1878,7 +1850,7 @@ static int cfi_spansion_write_block(struct flash_bank *bank, const uint8_t *buff
 
        /* convert bus-width dependent algorithm code to correct endianness */
        target_code = malloc(target_code_size);
-       if (target_code == NULL) {
+       if (!target_code) {
                LOG_ERROR("Out of memory");
                return ERROR_FAIL;
        }
@@ -1941,9 +1913,9 @@ static int cfi_spansion_write_block(struct flash_bank *bank, const uint8_t *buff
                buf_set_u32(reg_params[2].value, 0, 32, thisrun_count / bank->bus_width);
                buf_set_u32(reg_params[3].value, 0, 32, cfi_command_val(bank, 0xA0));
                buf_set_u32(reg_params[4].value, 0, 32, cfi_command_val(bank, 0x80));
-               buf_set_u32(reg_params[6].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock1));
+               buf_set_u32(reg_params[6].value, 0, 32, cfi_flash_address(bank, 0, pri_ext->_unlock1));
                buf_set_u32(reg_params[7].value, 0, 32, 0xaaaaaaaa);
-               buf_set_u32(reg_params[8].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock2));
+               buf_set_u32(reg_params[8].value, 0, 32, cfi_flash_address(bank, 0, pri_ext->_unlock2));
                buf_set_u32(reg_params[9].value, 0, 32, 0x55555555);
 
                retval = target_run_algorithm(target, 0, NULL, 10, reg_params,
@@ -1985,14 +1957,13 @@ static int cfi_intel_write_word(struct flash_bank *bank, uint8_t *word, uint32_t
 {
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
-       struct target *target = bank->target;
 
        cfi_intel_clear_status_register(bank);
        retval = cfi_send_command(bank, 0x40, address);
        if (retval != ERROR_OK)
                return retval;
 
-       retval = target_write_memory(target, address, bank->bus_width, 1, word);
+       retval = cfi_target_write_memory(bank, address, 1, word);
        if (retval != ERROR_OK)
                return retval;
 
@@ -2001,12 +1972,13 @@ static int cfi_intel_write_word(struct flash_bank *bank, uint8_t *word, uint32_t
        if (retval != ERROR_OK)
                return retval;
        if (status != 0x80) {
-               retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+               retval = cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
-               LOG_ERROR("couldn't write word at base 0x%" PRIx32 ", address 0x%" PRIx32,
-                       bank->base, address);
+               LOG_ERROR("couldn't write word at base " TARGET_ADDR_FMT
+                               ", address 0x%" PRIx32,
+                               bank->base, address);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
@@ -2018,7 +1990,6 @@ static int cfi_intel_write_words(struct flash_bank *bank, const uint8_t *word,
 {
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
-       struct target *target = bank->target;
 
        /* Calculate buffer size and boundary mask
         * buffersize is (buffer size per chip) * (number of chips)
@@ -2030,15 +2001,15 @@ static int cfi_intel_write_words(struct flash_bank *bank, const uint8_t *word,
 
        /* Check for valid range */
        if (address & buffermask) {
-               LOG_ERROR("Write address at base 0x%" PRIx32 ", address 0x%" PRIx32
-                       " not aligned to 2^%d boundary",
-                       bank->base, address, cfi_info->max_buf_write_size);
+               LOG_ERROR("Write address at base " TARGET_ADDR_FMT ", address 0x%"
+                               PRIx32 " not aligned to 2^%d boundary",
+                               bank->base, address, cfi_info->max_buf_write_size);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
        /* Check for valid size */
        if (wordcount > bufferwsize) {
-               LOG_ERROR("Number of data words %" PRId32 " exceeds available buffersize %" PRId32,
+               LOG_ERROR("Number of data words %" PRIu32 " exceeds available buffersize %" PRIu32,
                        wordcount, buffersize);
                return ERROR_FLASH_OPERATION_FAILED;
        }
@@ -2055,12 +2026,13 @@ static int cfi_intel_write_words(struct flash_bank *bank, const uint8_t *word,
        if (retval != ERROR_OK)
                return retval;
        if (status != 0x80) {
-               retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+               retval = cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
                LOG_ERROR(
-                       "couldn't start buffer write operation at base 0x%" PRIx32 ", address 0x%" PRIx32,
+                       "couldn't start buffer write operation at base " TARGET_ADDR_FMT
+                       ", address 0x%" PRIx32,
                        bank->base,
                        address);
                return ERROR_FLASH_OPERATION_FAILED;
@@ -2071,7 +2043,7 @@ static int cfi_intel_write_words(struct flash_bank *bank, const uint8_t *word,
        if (retval != ERROR_OK)
                return retval;
 
-       retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word);
+       retval = cfi_target_write_memory(bank, address, bufferwsize, word);
        if (retval != ERROR_OK)
                return retval;
 
@@ -2085,11 +2057,11 @@ static int cfi_intel_write_words(struct flash_bank *bank, const uint8_t *word,
                return retval;
 
        if (status != 0x80) {
-               retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+               retval = cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
-               LOG_ERROR("Buffer write at base 0x%" PRIx32
+               LOG_ERROR("Buffer write at base " TARGET_ADDR_FMT
                        ", address 0x%" PRIx32 " failed.", bank->base, address);
                return ERROR_FLASH_OPERATION_FAILED;
        }
@@ -2102,30 +2074,25 @@ static int cfi_spansion_write_word(struct flash_bank *bank, uint8_t *word, uint3
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
-       struct target *target = bank->target;
-
-       retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1));
-       if (retval != ERROR_OK)
-               return retval;
 
-       retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2));
+       retval = cfi_spansion_unlock_seq(bank);
        if (retval != ERROR_OK)
                return retval;
 
-       retval = cfi_send_command(bank, 0xa0, flash_address(bank, 0, pri_ext->_unlock1));
+       retval = cfi_send_command(bank, 0xa0, cfi_flash_address(bank, 0, pri_ext->_unlock1));
        if (retval != ERROR_OK)
                return retval;
 
-       retval = target_write_memory(target, address, bank->bus_width, 1, word);
+       retval = cfi_target_write_memory(bank, address, 1, word);
        if (retval != ERROR_OK)
                return retval;
 
        if (cfi_spansion_wait_status_busy(bank, cfi_info->word_write_timeout) != ERROR_OK) {
-               retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+               retval = cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
-               LOG_ERROR("couldn't write word at base 0x%" PRIx32
+               LOG_ERROR("couldn't write word at base " TARGET_ADDR_FMT
                        ", address 0x%" PRIx32, bank->base, address);
                return ERROR_FLASH_OPERATION_FAILED;
        }
@@ -2138,8 +2105,6 @@ static int cfi_spansion_write_words(struct flash_bank *bank, const uint8_t *word
 {
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
-       struct target *target = bank->target;
-       struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
 
        /* Calculate buffer size and boundary mask
         * buffersize is (buffer size per chip) * (number of chips)
@@ -2151,7 +2116,7 @@ static int cfi_spansion_write_words(struct flash_bank *bank, const uint8_t *word
 
        /* Check for valid range */
        if (address & buffermask) {
-               LOG_ERROR("Write address at base 0x%" PRIx32
+               LOG_ERROR("Write address at base " TARGET_ADDR_FMT
                        ", address 0x%" PRIx32 " not aligned to 2^%d boundary",
                        bank->base, address, cfi_info->max_buf_write_size);
                return ERROR_FLASH_OPERATION_FAILED;
@@ -2159,17 +2124,13 @@ static int cfi_spansion_write_words(struct flash_bank *bank, const uint8_t *word
 
        /* Check for valid size */
        if (wordcount > bufferwsize) {
-               LOG_ERROR("Number of data words %" PRId32 " exceeds available buffersize %"
-                       PRId32, wordcount, buffersize);
+               LOG_ERROR("Number of data words %" PRIu32 " exceeds available buffersize %"
+                       PRIu32, wordcount, buffersize);
                return ERROR_FLASH_OPERATION_FAILED;
        }
 
        /* Unlock */
-       retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1));
-       if (retval != ERROR_OK)
-               return retval;
-
-       retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2));
+       retval = cfi_spansion_unlock_seq(bank);
        if (retval != ERROR_OK)
                return retval;
 
@@ -2183,7 +2144,7 @@ static int cfi_spansion_write_words(struct flash_bank *bank, const uint8_t *word
        if (retval != ERROR_OK)
                return retval;
 
-       retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word);
+       retval = cfi_target_write_memory(bank, address, bufferwsize, word);
        if (retval != ERROR_OK)
                return retval;
 
@@ -2193,11 +2154,11 @@ static int cfi_spansion_write_words(struct flash_bank *bank, const uint8_t *word
                return retval;
 
        if (cfi_spansion_wait_status_busy(bank, cfi_info->buf_write_timeout) != ERROR_OK) {
-               retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+               retval = cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
                if (retval != ERROR_OK)
                        return retval;
 
-               LOG_ERROR("couldn't write block at base 0x%" PRIx32
+               LOG_ERROR("couldn't write block at base " TARGET_ADDR_FMT
                        ", address 0x%" PRIx32 ", size 0x%" PRIx32, bank->base, address,
                        bufferwsize);
                return ERROR_FLASH_OPERATION_FAILED;
@@ -2206,7 +2167,7 @@ static int cfi_spansion_write_words(struct flash_bank *bank, const uint8_t *word
        return ERROR_OK;
 }
 
-static int cfi_write_word(struct flash_bank *bank, uint8_t *word, uint32_t address)
+int cfi_write_word(struct flash_bank *bank, uint8_t *word, uint32_t address)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
@@ -2214,10 +2175,8 @@ static int cfi_write_word(struct flash_bank *bank, uint8_t *word, uint32_t addre
                case 1:
                case 3:
                        return cfi_intel_write_word(bank, word, address);
-                       break;
                case 2:
                        return cfi_spansion_write_word(bank, word, address);
-                       break;
                default:
                        LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
@@ -2241,10 +2200,8 @@ static int cfi_write_words(struct flash_bank *bank, const uint8_t *word,
                case 1:
                case 3:
                        return cfi_intel_write_words(bank, word, wordcount, address);
-                       break;
                case 2:
                        return cfi_spansion_write_words(bank, word, wordcount, address);
-                       break;
                default:
                        LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
@@ -2256,12 +2213,10 @@ static int cfi_write_words(struct flash_bank *bank, const uint8_t *word,
 static int cfi_read(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
-       struct target *target = bank->target;
        uint32_t address = bank->base + offset;
        uint32_t read_p;
        int align;      /* number of unaligned bytes */
        uint8_t current_word[CFI_MAX_BUS_WIDTH];
-       int i;
        int retval;
 
        LOG_DEBUG("reading buffer of %i byte at 0x%8.8x",
@@ -2285,12 +2240,12 @@ static int cfi_read(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, u
                LOG_INFO("Fixup %d unaligned read head bytes", align);
 
                /* read a complete word from flash */
-               retval = target_read_memory(target, read_p, bank->bus_width, 1, current_word);
+               retval = cfi_target_read_memory(bank, read_p, 1, current_word);
                if (retval != ERROR_OK)
                        return retval;
 
                /* take only bytes we need */
-               for (i = align; (i < bank->bus_width) && (count > 0); i++, count--)
+               for (unsigned int i = align; (i < bank->bus_width) && (count > 0); i++, count--)
                        *buffer++ = current_word[i];
 
                read_p += bank->bus_width;
@@ -2298,7 +2253,7 @@ static int cfi_read(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, u
 
        align = count / bank->bus_width;
        if (align) {
-               retval = target_read_memory(target, read_p, bank->bus_width, align, buffer);
+               retval = cfi_target_read_memory(bank, read_p, align, buffer);
                if (retval != ERROR_OK)
                        return retval;
 
@@ -2311,12 +2266,12 @@ static int cfi_read(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, u
                LOG_INFO("Fixup %" PRIu32 " unaligned read tail bytes", count);
 
                /* read a complete word from flash */
-               retval = target_read_memory(target, read_p, bank->bus_width, 1, current_word);
+               retval = cfi_target_read_memory(bank, read_p, 1, current_word);
                if (retval != ERROR_OK)
                        return retval;
 
                /* take only bytes we need */
-               for (i = 0; (i < bank->bus_width) && (count > 0); i++, count--)
+               for (unsigned int i = 0; (i < bank->bus_width) && (count > 0); i++, count--)
                        *buffer++ = current_word[i];
        }
 
@@ -2326,14 +2281,14 @@ static int cfi_read(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, u
 static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
-       struct target *target = bank->target;
        uint32_t address = bank->base + offset; /* address of first byte to be programmed */
        uint32_t write_p;
        int align;      /* number of unaligned bytes */
        int blk_count;  /* number of bus_width bytes for block copy */
        uint8_t current_word[CFI_MAX_BUS_WIDTH * 4];    /* word (bus_width size) currently being
                                                         *programmed */
-       int i;
+       uint8_t *swapped_buffer = NULL;
+       const uint8_t *real_buffer = NULL;
        int retval;
 
        if (bank->target->state != TARGET_HALTED) {
@@ -2354,13 +2309,17 @@ static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t of
                LOG_INFO("Fixup %d unaligned head bytes", align);
 
                /* read a complete word from flash */
-               retval = target_read_memory(target, write_p, bank->bus_width, 1, current_word);
+               retval = cfi_target_read_memory(bank, write_p, 1, current_word);
                if (retval != ERROR_OK)
                        return retval;
 
                /* replace only bytes that must be written */
-               for (i = align; (i < bank->bus_width) && (count > 0); i++, count--)
-                       current_word[i] = *buffer++;
+               for (unsigned int i = align; (i < bank->bus_width) && (count > 0); i++, count--)
+                       if (cfi_info->data_swap)
+                               /* data bytes are swapped (reverse endianness) */
+                               current_word[bank->bus_width - i] = *buffer++;
+                       else
+                               current_word[i] = *buffer++;
 
                retval = cfi_write_word(bank, current_word, write_p);
                if (retval != ERROR_OK)
@@ -2368,6 +2327,22 @@ static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t of
                write_p += bank->bus_width;
        }
 
+       if (cfi_info->data_swap && count) {
+               swapped_buffer = malloc(count & ~(bank->bus_width - 1));
+               switch (bank->bus_width) {
+               case 2:
+                       buf_bswap16(swapped_buffer, buffer,
+                                   count & ~(bank->bus_width - 1));
+                       break;
+               case 4:
+                       buf_bswap32(swapped_buffer, buffer,
+                                   count & ~(bank->bus_width - 1));
+                       break;
+               }
+               real_buffer = buffer;
+               buffer = swapped_buffer;
+       }
+
        /* handle blocks of bus_size aligned bytes */
        blk_count = count & ~(bank->bus_width - 1);     /* round down, leave tail bytes */
        switch (cfi_info->pri_id) {
@@ -2385,7 +2360,7 @@ static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t of
                        break;
        }
        if (retval == ERROR_OK) {
-               /* Increment pointers and decrease count on succesful block write */
+               /* Increment pointers and decrease count on successful block write */
                buffer += blk_count;
                write_p += blk_count;
                count -= blk_count;
@@ -2403,12 +2378,12 @@ static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t of
 
                        /* fall back to memory writes */
                        while (count >= (uint32_t)bank->bus_width) {
-                               int fallback;
+                               bool fallback;
                                if ((write_p & 0xff) == 0) {
                                        LOG_INFO("Programming at 0x%08" PRIx32 ", count 0x%08"
                                                PRIx32 " bytes remaining", write_p, count);
                                }
-                               fallback = 1;
+                               fallback = true;
                                if ((bufferwsize > 0) && (count >= buffersize) &&
                                                !(write_p & buffermask)) {
                                        retval = cfi_write_words(bank, buffer, bufferwsize, write_p);
@@ -2416,13 +2391,13 @@ static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t of
                                                buffer += buffersize;
                                                write_p += buffersize;
                                                count -= buffersize;
-                                               fallback = 0;
+                                               fallback = false;
                                        } else if (retval != ERROR_FLASH_OPER_UNSUPPORTED)
                                                return retval;
                                }
                                /* try the slow way? */
                                if (fallback) {
-                                       for (i = 0; i < bank->bus_width; i++)
+                                       for (unsigned int i = 0; i < bank->bus_width; i++)
                                                current_word[i] = *buffer++;
 
                                        retval = cfi_write_word(bank, current_word, write_p);
@@ -2437,6 +2412,11 @@ static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t of
                        return retval;
        }
 
+       if (swapped_buffer) {
+               buffer = real_buffer + (buffer - swapped_buffer);
+               free(swapped_buffer);
+       }
+
        /* return to read array mode, so we can read from flash again for padding */
        retval = cfi_reset(bank);
        if (retval != ERROR_OK)
@@ -2444,16 +2424,20 @@ static int cfi_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t of
 
        /* handle unaligned tail bytes */
        if (count > 0) {
-               LOG_INFO("Fixup %" PRId32 " unaligned tail bytes", count);
+               LOG_INFO("Fixup %" PRIu32 " unaligned tail bytes", count);
 
                /* read a complete word from flash */
-               retval = target_read_memory(target, write_p, bank->bus_width, 1, current_word);
+               retval = cfi_target_read_memory(bank, write_p, 1, current_word);
                if (retval != ERROR_OK)
                        return retval;
 
                /* replace only bytes that must be written */
-               for (i = 0; (i < bank->bus_width) && (count > 0); i++, count--)
-                       current_word[i] = *buffer++;
+               for (unsigned int i = 0; (i < bank->bus_width) && (count > 0); i++, count--)
+                       if (cfi_info->data_swap)
+                               /* data bytes are swapped (reverse endianness) */
+                               current_word[bank->bus_width - i] = *buffer++;
+                       else
+                               current_word[i] = *buffer++;
 
                retval = cfi_write_word(bank, current_word, write_p);
                if (retval != ERROR_OK)
@@ -2475,15 +2459,14 @@ static void cfi_fixup_reversed_erase_regions(struct flash_bank *bank, const void
 
 static void cfi_fixup_0002_erase_regions(struct flash_bank *bank, const void *param)
 {
-       int i;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
        (void) param;
 
-       if ((pri_ext->_reversed_geometry) || (pri_ext->TopBottom == 3)) {
+       if ((pri_ext->_reversed_geometry) || (pri_ext->top_bottom == 3)) {
                LOG_DEBUG("swapping reversed erase region information on cmdset 0002 device");
 
-               for (i = 0; i < cfi_info->num_erase_regions / 2; i++) {
+               for (unsigned int i = 0; i < cfi_info->num_erase_regions / 2; i++) {
                        int j = (cfi_info->num_erase_regions - 1) - i;
                        uint32_t swap;
 
@@ -2518,7 +2501,7 @@ static int cfi_query_string(struct flash_bank *bank, int address)
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        int retval;
 
-       retval = cfi_send_command(bank, 0x98, flash_address(bank, 0, address));
+       retval = cfi_send_command(bank, 0x98, cfi_flash_address(bank, 0, address));
        if (retval != ERROR_OK)
                return retval;
 
@@ -2546,12 +2529,11 @@ static int cfi_query_string(struct flash_bank *bank, int address)
        return ERROR_OK;
 }
 
-static int cfi_probe(struct flash_bank *bank)
+int cfi_probe(struct flash_bank *bank)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct target *target = bank->target;
-       int num_sectors = 0;
-       int i;
+       unsigned int num_sectors = 0;
        int sector = 0;
        uint32_t unlock1 = 0x555;
        uint32_t unlock2 = 0x2aa;
@@ -2563,16 +2545,14 @@ static int cfi_probe(struct flash_bank *bank)
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       cfi_info->probed = 0;
+       cfi_info->probed = false;
        cfi_info->num_erase_regions = 0;
-       if (bank->sectors) {
-               free(bank->sectors);
-               bank->sectors = NULL;
-       }
-       if (cfi_info->erase_region_info) {
-               free(cfi_info->erase_region_info);
-               cfi_info->erase_region_info = NULL;
-       }
+
+       free(bank->sectors);
+       bank->sectors = NULL;
+
+       free(cfi_info->erase_region_info);
+       cfi_info->erase_region_info = NULL;
 
        /* JEDEC standard JESD21C uses 0x5555 and 0x2aaa as unlock addresses,
         * while CFI compatible AMD/Spansion flashes use 0x555 and 0x2aa
@@ -2583,22 +2563,22 @@ static int cfi_probe(struct flash_bank *bank)
        }
 
        /* switch to read identifier codes mode ("AUTOSELECT") */
-       retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, unlock1));
+       retval = cfi_send_command(bank, 0xaa, cfi_flash_address(bank, 0, unlock1));
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, unlock2));
+       retval = cfi_send_command(bank, 0x55, cfi_flash_address(bank, 0, unlock2));
        if (retval != ERROR_OK)
                return retval;
-       retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, unlock1));
+       retval = cfi_send_command(bank, 0x90, cfi_flash_address(bank, 0, unlock1));
        if (retval != ERROR_OK)
                return retval;
 
-       retval = target_read_memory(target, flash_address(bank, 0, 0x00),
-                       bank->bus_width, 1, value_buf0);
+       retval = cfi_target_read_memory(bank, cfi_flash_address(bank, 0, 0x00),
+                                       1, value_buf0);
        if (retval != ERROR_OK)
                return retval;
-       retval = target_read_memory(target, flash_address(bank, 0, 0x01),
-                       bank->bus_width, 1, value_buf1);
+       retval = cfi_target_read_memory(bank, cfi_flash_address(bank, 0, 0x01),
+                                       1, value_buf1);
        if (retval != ERROR_OK)
                return retval;
        switch (bank->chip_width) {
@@ -2615,7 +2595,7 @@ static int cfi_probe(struct flash_bank *bank)
                        cfi_info->device_id = target_buffer_get_u32(target, value_buf1);
                        break;
                default:
-                       LOG_ERROR("Unsupported bank chipwidth %d, can't probe memory",
+                       LOG_ERROR("Unsupported bank chipwidth %u, can't probe memory",
                                        bank->chip_width);
                        return ERROR_FLASH_OPERATION_FAILED;
        }
@@ -2633,7 +2613,7 @@ static int cfi_probe(struct flash_bank *bank)
        /* query only if this is a CFI compatible flash,
         * otherwise the relevant info has already been filled in
         */
-       if (cfi_info->not_cfi == 0) {
+       if (!cfi_info->not_cfi) {
                /* enter CFI query mode
                 * according to JEDEC Standard No. 68.01,
                 * a single bus sequence with address = 0x55, data = 0x98 should put
@@ -2735,7 +2715,7 @@ static int cfi_probe(struct flash_bank *bank)
                if (cfi_info->num_erase_regions) {
                        cfi_info->erase_region_info = malloc(sizeof(*cfi_info->erase_region_info)
                                        * cfi_info->num_erase_regions);
-                       for (i = 0; i < cfi_info->num_erase_regions; i++) {
+                       for (unsigned int i = 0; i < cfi_info->num_erase_regions; i++) {
                                retval = cfi_query_u32(bank,
                                                0,
                                                0x2d + (4 * i),
@@ -2767,7 +2747,7 @@ static int cfi_probe(struct flash_bank *bank)
                                                                                                 *for
                                                                                                 *all
                                                                                                 *CFI
-                                                                                                *flashs
+                                                                                                *flashes
                                                                                                 **/
                                cfi_read_0002_pri_ext(bank);
                                break;
@@ -2850,15 +2830,14 @@ static int cfi_probe(struct flash_bank *bank)
        } else {
                uint32_t offset = 0;
 
-               for (i = 0; i < cfi_info->num_erase_regions; i++)
+               for (unsigned int i = 0; i < cfi_info->num_erase_regions; i++)
                        num_sectors += (cfi_info->erase_region_info[i] & 0xffff) + 1;
 
                bank->num_sectors = num_sectors;
                bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
 
-               for (i = 0; i < cfi_info->num_erase_regions; i++) {
-                       uint32_t j;
-                       for (j = 0; j < (cfi_info->erase_region_info[i] & 0xffff) + 1; j++) {
+               for (unsigned int i = 0; i < cfi_info->num_erase_regions; i++) {
+                       for (uint32_t j = 0; j < (cfi_info->erase_region_info[i] & 0xffff) + 1; j++) {
                                bank->sectors[sector].offset = offset;
                                bank->sectors[sector].size =
                                        ((cfi_info->erase_region_info[i] >> 16) * 256)
@@ -2871,18 +2850,18 @@ static int cfi_probe(struct flash_bank *bank)
                }
                if (offset != (cfi_info->dev_size * bank->bus_width / bank->chip_width)) {
                        LOG_WARNING(
-                               "CFI size is 0x%" PRIx32 ", but total sector size is 0x%" PRIx32 "", \
+                               "CFI size is 0x%" PRIx32 ", but total sector size is 0x%" PRIx32 "",
                                (cfi_info->dev_size * bank->bus_width / bank->chip_width),
                                offset);
                }
        }
 
-       cfi_info->probed = 1;
+       cfi_info->probed = true;
 
        return ERROR_OK;
 }
 
-static int cfi_auto_probe(struct flash_bank *bank)
+int cfi_auto_probe(struct flash_bank *bank)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        if (cfi_info->probed)
@@ -2895,17 +2874,16 @@ static int cfi_intel_protect_check(struct flash_bank *bank)
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
-       int i;
 
        /* check if block lock bits are supported on this device */
        if (!(pri_ext->blk_status_reg_mask & 0x1))
                return ERROR_FLASH_OPERATION_FAILED;
 
-       retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, 0x55));
+       retval = cfi_send_command(bank, 0x90, cfi_flash_address(bank, 0, 0x55));
        if (retval != ERROR_OK)
                return retval;
 
-       for (i = 0; i < bank->num_sectors; i++) {
+       for (unsigned int i = 0; i < bank->num_sectors; i++) {
                uint8_t block_status;
                retval = cfi_get_u8(bank, i, 0x2, &block_status);
                if (retval != ERROR_OK)
@@ -2917,7 +2895,7 @@ static int cfi_intel_protect_check(struct flash_bank *bank)
                        bank->sectors[i].is_protected = 0;
        }
 
-       return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
+       return cfi_send_command(bank, 0xff, cfi_flash_address(bank, 0, 0x0));
 }
 
 static int cfi_spansion_protect_check(struct flash_bank *bank)
@@ -2925,21 +2903,16 @@ static int cfi_spansion_protect_check(struct flash_bank *bank)
        int retval;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
        struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
-       int i;
 
-       retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1));
+       retval = cfi_spansion_unlock_seq(bank);
        if (retval != ERROR_OK)
                return retval;
 
-       retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2));
+       retval = cfi_send_command(bank, 0x90, cfi_flash_address(bank, 0, pri_ext->_unlock1));
        if (retval != ERROR_OK)
                return retval;
 
-       retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, pri_ext->_unlock1));
-       if (retval != ERROR_OK)
-               return retval;
-
-       for (i = 0; i < bank->num_sectors; i++) {
+       for (unsigned int i = 0; i < bank->num_sectors; i++) {
                uint8_t block_status;
                retval = cfi_get_u8(bank, i, 0x2, &block_status);
                if (retval != ERROR_OK)
@@ -2951,10 +2924,10 @@ static int cfi_spansion_protect_check(struct flash_bank *bank)
                        bank->sectors[i].is_protected = 0;
        }
 
-       return cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
+       return cfi_send_command(bank, 0xf0, cfi_flash_address(bank, 0, 0x0));
 }
 
-static int cfi_protect_check(struct flash_bank *bank)
+int cfi_protect_check(struct flash_bank *bank)
 {
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
@@ -2970,10 +2943,8 @@ static int cfi_protect_check(struct flash_bank *bank)
                case 1:
                case 3:
                        return cfi_intel_protect_check(bank);
-                       break;
                case 2:
                        return cfi_spansion_protect_check(bank);
-                       break;
                default:
                        LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
                        break;
@@ -2982,45 +2953,36 @@ static int cfi_protect_check(struct flash_bank *bank)
        return ERROR_OK;
 }
 
-static int get_cfi_info(struct flash_bank *bank, char *buf, int buf_size)
+int cfi_get_info(struct flash_bank *bank, struct command_invocation *cmd)
 {
-       int printed;
        struct cfi_flash_bank *cfi_info = bank->driver_priv;
 
        if (cfi_info->qry[0] == 0xff) {
-               snprintf(buf, buf_size, "\ncfi flash bank not probed yet\n");
+               command_print_sameline(cmd, "\ncfi flash bank not probed yet\n");
                return ERROR_OK;
        }
 
-       if (cfi_info->not_cfi == 0)
-               printed = snprintf(buf, buf_size, "\nCFI flash: ");
+       if (!cfi_info->not_cfi)
+               command_print_sameline(cmd, "\nCFI flash: ");
        else
-               printed = snprintf(buf, buf_size, "\nnon-CFI flash: ");
-       buf += printed;
-       buf_size -= printed;
+               command_print_sameline(cmd, "\nnon-CFI flash: ");
 
-       printed = snprintf(buf, buf_size, "mfr: 0x%4.4x, id:0x%4.4x\n\n",
+       command_print_sameline(cmd, "mfr: 0x%4.4x, id:0x%4.4x\n",
                        cfi_info->manufacturer, cfi_info->device_id);
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "qry: '%c%c%c', pri_id: 0x%4.4x, pri_addr: "
+       command_print_sameline(cmd, "qry: '%c%c%c', pri_id: 0x%4.4x, pri_addr: "
                        "0x%4.4x, alt_id: 0x%4.4x, alt_addr: 0x%4.4x\n",
                        cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2],
                        cfi_info->pri_id, cfi_info->pri_addr, cfi_info->alt_id, cfi_info->alt_addr);
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "Vcc min: %x.%x, Vcc max: %x.%x, "
+       command_print_sameline(cmd, "Vcc min: %x.%x, Vcc max: %x.%x, "
                        "Vpp min: %u.%x, Vpp max: %u.%x\n",
                        (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
                        (cfi_info->vcc_max & 0xf0) >> 4, cfi_info->vcc_max & 0x0f,
                        (cfi_info->vpp_min & 0xf0) >> 4, cfi_info->vpp_min & 0x0f,
                        (cfi_info->vpp_max & 0xf0) >> 4, cfi_info->vpp_max & 0x0f);
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "typ. word write timeout: %u us, "
+       command_print_sameline(cmd, "typ. word write timeout: %u us, "
                        "typ. buf write timeout: %u us, "
                        "typ. block erase timeout: %u ms, "
                        "typ. chip erase timeout: %u ms\n",
@@ -3028,12 +2990,8 @@ static int get_cfi_info(struct flash_bank *bank, char *buf, int buf_size)
                        1 << cfi_info->buf_write_timeout_typ,
                        1 << cfi_info->block_erase_timeout_typ,
                        1 << cfi_info->chip_erase_timeout_typ);
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf,
-                       buf_size,
-                       "max. word write timeout: %u us, "
+       command_print_sameline(cmd, "max. word write timeout: %u us, "
                        "max. buf write timeout: %u us, max. "
                        "block erase timeout: %u ms, max. chip erase timeout: %u ms\n",
                        (1 <<
@@ -3046,24 +3004,20 @@ static int get_cfi_info(struct flash_bank *bank, char *buf, int buf_size)
                        (1 <<
                         cfi_info->chip_erase_timeout_max) *
                        (1 << cfi_info->chip_erase_timeout_typ));
-       buf += printed;
-       buf_size -= printed;
 
-       printed = snprintf(buf, buf_size, "size: 0x%" PRIx32 ", interface desc: %i, "
+       command_print_sameline(cmd, "size: 0x%" PRIx32 ", interface desc: %i, "
                        "max buffer write size: 0x%x\n",
                        cfi_info->dev_size,
                        cfi_info->interface_desc,
                        1 << cfi_info->max_buf_write_size);
-       buf += printed;
-       buf_size -= printed;
 
        switch (cfi_info->pri_id) {
            case 1:
            case 3:
-                   cfi_intel_info(bank, buf, buf_size);
+                   cfi_intel_info(bank, cmd);
                    break;
            case 2:
-                   cfi_spansion_info(bank, buf, buf_size);
+                   cfi_spansion_info(bank, cmd);
                    break;
            default:
                    LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
@@ -3081,7 +3035,7 @@ static void cfi_fixup_0002_write_buffer(struct flash_bank *bank, const void *par
        cfi_info->buf_write_timeout_typ = 0;
 }
 
-struct flash_driver cfi_flash = {
+const struct flash_driver cfi_flash = {
        .name = "cfi",
        .flash_bank_command = cfi_flash_bank_command,
        .erase = cfi_erase,
@@ -3093,5 +3047,6 @@ struct flash_driver cfi_flash = {
        /* FIXME: access flash at bus_width size */
        .erase_check = default_flash_blank_check,
        .protect_check = cfi_protect_check,
-       .info = get_cfi_info,
+       .info = cfi_get_info,
+       .free_driver_priv = default_flash_free_driver_priv,
 };

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