flash: add Nuvoton NUC910 series support

Not tested, adapted from http://tech.groups.yahoo.com/group/versaloon/message/391

Change-Id: Ic3273e64fd99bffab16764b06227e09a05d07c8f
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1510
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-by: Nemui Trinomius <nemuisan_kawausogasuki@live.jp>

3 files changed, 644 insertions, 1 deletions

diff --git a/src/flash/nor/Makefile.am b/src/flash/nor/Makefile.am
index b5ffc52..1082b22 100644
--- a/src/flash/nor/Makefile.am
+++ b/src/flash/nor/Makefile.am
@@ -39,7 +39,8 @@ NOR_DRIVERS = \
 	fm3.c \
 	dsp5680xx_flash.c \
 	kinetis.c \
-	mini51.c
+	mini51.c \
+	nuc1x.c
 
 noinst_HEADERS = \
 	core.h \
diff --git a/src/flash/nor/drivers.c b/src/flash/nor/drivers.c
index 286ecf2..aee7c56 100644
--- a/src/flash/nor/drivers.c
+++ b/src/flash/nor/drivers.c
@@ -52,6 +52,7 @@ extern struct flash_driver kinetis_flash;
 extern struct flash_driver efm32_flash;
 extern struct flash_driver mdr_flash;
 extern struct flash_driver mini51_flash;
+extern struct flash_driver nuc1x_flash;
 
 /**
  * The list of built-in flash drivers.
@@ -88,6 +89,7 @@ static struct flash_driver *flash_drivers[] = {
 	&efm32_flash,
 	&mdr_flash,
 	&mini51_flash,
+	&nuc1x_flash,
 	NULL,
 };
 
diff --git a/src/flash/nor/nuc1x.c b/src/flash/nor/nuc1x.c
new file mode 100644
index 0000000..a5a14c8
--- /dev/null
+++ b/src/flash/nor/nuc1x.c
@@ -0,0 +1,640 @@
+/***************************************************************************
+ *   Copyright (C) 2011 by James K. Larson                                 *
+ *   jlarson@pacifier.com                                                  *
+ *                                                                         *
+ *   Copyright (C) 2013 Nemui Trinomius                                    *
+ *   nemuisan_kawausogasuki@live.jp                                        *
+ *                                                                         *
+ *   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
+#include <config.h>
+#endif
+
+#include "imp.h"
+
+/* nuc1x register locations */
+#define NUC1X_SYS_BASE        0x50000000
+#define NUC1X_SYS_WRPROT      0x50000100
+#define NUC1X_SYS_IPRSTC1     0x50000008
+
+#define NUC1X_SYSCLK_BASE     0x50000200
+#define NUC1X_SYSCLK_PWRCON   0x50000200
+#define NUC1X_SYSCLK_CLKSEL0  0x50000210
+#define NUC1X_SYSCLK_CLKDIV   0x50000218
+#define NUC1X_SYSCLK_AHBCLK   0x50000204
+
+#define NUC1X_FLASH_BASE      0x5000C000
+#define NUC1X_FLASH_ISPCON    0x5000C000
+#define NUC1X_FLASH_ISPCMD    0x5000C00C
+#define NUC1X_FLASH_ISPADR    0x5000C004
+#define NUC1X_FLASH_ISPDAT    0x5000C008
+#define NUC1X_FLASH_ISPTRG    0x5000C010
+
+/* Command register bits */
+#define PWRCON_OSC22M         (1 << 2)
+#define PWRCON_XTL12M         (1 << 0)
+
+#define IPRSTC1_CPU_RST       (1<<1)
+#define IPRSTC1_CHIP_RST      (1<<0)
+
+#define AHBCLK_ISP_EN         (1 << 2)
+
+#define ISPCON_ISPEN          (1 << 0)
+#define ISPCON_BS_AP          (0 << 1)
+#define ISPCON_BS_LP          (1 << 1)
+#define ISPCON_CFGUEN         (1 << 4)
+#define ISPCON_LDUEN          (1 << 5)
+#define ISPCON_ISPFF          (1 << 6)
+
+/* isp commands */
+#define ISPCMD_FCTRL          (0x2)
+#define ISPCMD_FCEN           (1 << 4)
+#define ISPCMD_FOEN           (1 << 5)
+#define ISPCMD_ERASE          (0x2 | ISPCMD_FOEN)
+#define ISPCMD_WRITE          (0x1 | ISPCMD_FOEN)
+#define ISPTRG_ISPGO          (1 << 0)
+
+/* access unlock keys */
+#define KEY1 0x59
+#define KEY2 0x16
+#define KEY3 0x88
+#define LOCK 0x00
+
+/* part structs */
+static struct {
+	const char *partname;
+	uint32_t partno;
+	uint16_t num_page;
+}
+NuMicroParts[] = {
+	/*PART NO*/   /*PART ID*/   /*NUM PAGE*/
+	{"NUC100LC1", 0x00010008,   64},
+	{"NUC100LD1", 0x00010005,   128},
+	{"NUC100LD2", 0x00010004,   128},
+	{"NUC100RC1", 0x00010017,   64},
+	{"NUC100RD1", 0x00010014,   128},
+	{"NUC100RD2", 0x00010013,   128},
+
+	{"NUC100LD3", 0x00010003,   128},
+	{"NUC100LE3", 0x00010000,   256},
+	{"NUC100RD3", 0x00010012,   128},
+	{"NUC100RE3", 0x00010009,   256},
+	{"NUC100VD2", 0x00010022,   128},
+	{"NUC100VD3", 0x00010021,   128},
+	{"NUC100VE3", 0x00010018,   256},
+
+	{"NUC120LC1", 0x00012008,   64},
+	{"NUC120LD1", 0x00012005,   128},
+	{"NUC120LD2", 0x00012004,   128},
+	{"NUC120RC1", 0x00012017,   64},
+	{"NUC120RD1", 0x00012014,   128},
+	{"NUC120RD2", 0x00012013,   128},
+
+	{"NUC120LD3", 0x00012003,   128},
+	{"NUC120LE3", 0x00012000,   256},
+	{"NUC120RD3", 0x00012012,   128},
+	{"NUC120RE3", 0x00012009,   256},
+	{"NUC120VD2", 0x00012022,   128},
+	{"NUC120VD3", 0x00012021,   128},
+	{"NUC120VE3", 0x00012018,   256},
+
+	{"NUC122ZD2", 0x00012231,   128},
+	{"NUC122ZC1", 0x00012235,   64},
+	{"NUC122LD2", 0x00012204,   128},
+	{"NUC122LC1", 0x00012208,   64},
+	{"NUC122RD2", 0x00012213,   128},
+	{"NUC122RC1", 0x00012217,   64},
+
+	{"NUC123ZD4", 0x00012255,   136},
+	{"NUC123ZC2", 0x00012245,   68},
+	{"NUC123LD4", 0x00012235,   136},
+	{"NUC123LC2", 0x00012225,   68},
+	{"NUC123SD4", 0x00012215,   136},
+	{"NUC123SC2", 0x00012205,   68},
+
+	{"NUC130LC1", 0x00013008,   64},
+	{"NUC130LD2", 0x00013004,   128},
+	{"NUC130LE3", 0x00013000,   256},
+	{"NUC130RC1", 0x00013017,   64},
+	{"NUC130RD2", 0x00013013,   128},
+	{"NUC130RE3", 0x00013009,   256},
+	{"NUC130VE3", 0x00013018,   256},
+
+	{"M052L",     0x00005200,   16},
+	{"M052Z",     0x00005203,   16},
+	{"M054L",     0x00005400,   32},
+	{"M054Z",     0x00005403,   32},
+	{"M058L",     0x00005800,   64},
+	{"M058Z",     0x00005803,   64},
+	{"M0516L",    0x00005A00,   128},
+	{"M0516Z",    0x00005A03,   128},
+
+	{"MINI51L",   0x00205100,   8},
+	{"MINI51Z",   0x00205103,   8},
+	{"MINI52L",   0x00205200,   16},
+	{"MINI52Z",   0x00205203,   16},
+	{"MINI54L",   0x00205400,   32},
+	{"MINI54Z",   0x00205403,   32},
+
+	{"UNKNOWN",   0x00000000,   256},
+};
+
+static int nuc1x_unlock(struct flash_bank *bank)
+{
+	uint32_t is_protected;
+	struct target *target = bank->target;
+
+	/* Check to see if Nuc is unlocked or not */
+	int retval = target_read_u32(target, NUC1X_SYS_WRPROT, &is_protected);
+	if (retval != ERROR_OK)
+		return retval;
+
+	LOG_DEBUG("protected = 0x%08" PRIx32 "", is_protected);
+	if (is_protected == 0) {	/* means protected - so unlock it */
+		/* unlock flash registers */
+		retval = target_write_u32(target, NUC1X_SYS_WRPROT, KEY1);
+		if (retval != ERROR_OK)
+			return retval;
+		retval = target_write_u32(target, NUC1X_SYS_WRPROT, KEY2);
+		if (retval != ERROR_OK)
+			return retval;
+		retval = target_write_u32(target, NUC1X_SYS_WRPROT, KEY3);
+		if (retval != ERROR_OK)
+			return retval;
+	}
+	/* Check that unlock worked */
+	retval = target_read_u32(target, NUC1X_SYS_WRPROT, &is_protected);
+	if (retval != ERROR_OK)
+		return retval;
+
+	if (is_protected == 1) {	/* means unprotected */
+		LOG_DEBUG("protection removed");
+	} else {
+		LOG_DEBUG("still protected!!");
+	}
+
+	return ERROR_OK;
+}
+
+static int nuc1x_reset(struct flash_bank *bank)
+{
+	struct target *target = bank->target;
+
+	nuc1x_unlock(bank);
+
+	int retval = target_write_u32(target, NUC1X_SYS_IPRSTC1, IPRSTC1_CPU_RST);
+	if (retval != ERROR_OK)
+		return retval;
+
+	return ERROR_OK;
+}
+
+static int nuc1x_reset2lprom(struct flash_bank *bank)
+{
+	struct target *target = bank->target;
+
+	nuc1x_unlock(bank);
+	int retval = target_write_u32(target, NUC1X_FLASH_ISPCON, ISPCON_BS_LP);
+	if (retval != ERROR_OK)
+		return retval;
+
+	nuc1x_reset(bank);
+
+	return ERROR_OK;
+}
+
+static int nuc1x_init_iap(struct flash_bank *bank)
+{
+	struct target *target = bank->target;
+
+	if (target->state != TARGET_HALTED) {
+		LOG_ERROR("Target not halted");
+		return ERROR_TARGET_NOT_HALTED;
+	}
+
+	int retval = nuc1x_unlock(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	/* enable isp clock and ispen bit */
+	retval = target_write_u32(target, NUC1X_SYSCLK_AHBCLK, AHBCLK_ISP_EN);
+	if (retval != ERROR_OK)
+		return retval;
+
+	retval = target_write_u32(target, NUC1X_FLASH_ISPCON, ISPCON_ISPFF | ISPCON_LDUEN | ISPCON_CFGUEN | ISPCON_ISPEN);
+	if (retval != ERROR_OK)
+		return retval;
+
+	return ERROR_OK;
+}
+
+/* Private bank information for nuc1x. */
+struct  nuc1x_flash_bank {
+	struct working_area *write_algorithm;
+	int probed;
+};
+
+/* This is the function called in the config file. */
+FLASH_BANK_COMMAND_HANDLER(nuc1x_flash_bank_command)
+{
+	struct nuc1x_flash_bank *bank_info;
+
+	if (CMD_ARGC < 6)
+		return ERROR_COMMAND_SYNTAX_ERROR;
+
+	LOG_INFO("add flash_bank nuc1x %s", bank->name);
+
+	bank_info = malloc(sizeof(struct nuc1x_flash_bank));
+
+	memset(bank_info, 0, sizeof(struct nuc1x_flash_bank));
+
+	bank->driver_priv = bank_info;
+
+	return ERROR_OK;
+
+}
+
+/* Protection checking - examines the lock bit. */
+static int nuc1x_protect_check(struct flash_bank *bank)
+{
+	uint32_t is_protected, set;
+	struct target *target = bank->target;
+	int i;
+
+	if (target->state != TARGET_HALTED) {
+		LOG_ERROR("Target not halted");
+		return ERROR_TARGET_NOT_HALTED;
+	}
+
+	/* Check to see if Nuc is unlocked or not */
+	int retval = target_read_u32(target, NUC1X_SYS_WRPROT, &is_protected);
+	if (retval != ERROR_OK)
+		return retval;
+
+	LOG_INFO("is_protected = 0x%08" PRIx32 "", is_protected);
+	if (is_protected == 0) {	/* means protected */
+		set = 1;
+	} else {
+		set = 0;
+	}
+	for (i = 0; i < bank->num_sectors; i++)
+		bank->sectors[i].is_protected = set;
+
+	return ERROR_OK;
+}
+
+static int nuc1x_erase(struct flash_bank *bank, int first, int last)
+{
+	struct target *target = bank->target;
+	uint32_t timeout, status;
+	int i;
+
+	if (bank->target->state != TARGET_HALTED) {
+		LOG_ERROR("Target not halted");
+		return ERROR_TARGET_NOT_HALTED;
+	}
+
+	LOG_INFO("Nuvoton NUC: Sector Erase ... (%d to %d)", first, last);
+
+	int retval = nuc1x_reset2lprom(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	retval = nuc1x_init_iap(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	retval = nuc1x_unlock(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	retval = target_write_u32(target, NUC1X_FLASH_ISPCMD, ISPCMD_ERASE);
+	if (retval != ERROR_OK)
+		return retval;
+
+	for (i = first; i <= last; i++) {
+		LOG_DEBUG("erasing sector %d at addresss 0x%" PRIx32 "", i, bank->base + bank->sectors[i].offset);
+		retval = target_write_u32(target, NUC1X_FLASH_ISPADR, bank->base + bank->sectors[i].offset);
+		if (retval != ERROR_OK)
+			return retval;
+		retval = target_write_u32(target, NUC1X_FLASH_ISPTRG, ISPTRG_ISPGO); /* This is the only bit available */
+		if (retval != ERROR_OK)
+			return retval;
+
+		/* wait for busy to clear - check the GO flag */
+		timeout = 100;
+		for (;;) {
+			retval = target_read_u32(target, NUC1X_FLASH_ISPTRG, &status);
+			if (retval != ERROR_OK)
+				return retval;
+				LOG_DEBUG("status: 0x%" PRIx32 "", status);
+			if (status == 0)
+				break;
+			if (timeout-- <= 0) {
+				LOG_DEBUG("timed out waiting for flash");
+				return ERROR_FAIL;
+			}
+			busy_sleep(1);	/* can use busy sleep for short times. */
+		}
+
+		/* check for failure */
+		retval = target_read_u32(target, NUC1X_FLASH_ISPCON, &status);
+		if (retval != ERROR_OK)
+			return retval;
+		if ((status & ISPCON_ISPFF) != 0) {
+			LOG_DEBUG("failure: 0x%" PRIx32 "", status);
+			/* if bit is set, then must write to it to clear it. */
+			retval = target_write_u32(target, NUC1X_FLASH_ISPCON, ISPCON_ISPFF);
+			if (retval != ERROR_OK)
+				return retval;
+		} else {
+			bank->sectors[i].is_erased = 1;
+		}
+	}
+
+	retval = nuc1x_reset(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	/* done, */
+	LOG_DEBUG("Erase done.");
+
+	return ERROR_OK;
+}
+
+/* The write routine stub. */
+static int nuc1x_write(struct flash_bank *bank, uint8_t *buffer,
+		uint32_t offset, uint32_t count)
+{
+	struct target *target = bank->target;
+	uint32_t i, timeout, status;
+
+	if (bank->target->state != TARGET_HALTED) {
+		LOG_ERROR("Target not halted");
+		return ERROR_TARGET_NOT_HALTED;
+	}
+
+	LOG_INFO("Novoton NUC: FLASH Write ...");
+
+	int retval = nuc1x_reset2lprom(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	retval = nuc1x_init_iap(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	retval = nuc1x_unlock(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	retval = target_write_u32(target, NUC1X_FLASH_ISPCMD, ISPCMD_WRITE);
+	if (retval != ERROR_OK)
+		return retval;
+
+	/* program command */
+	for (i = 0; i < count; i += 4) {
+
+		LOG_DEBUG("write longword @ %08X", offset + i);
+
+		uint8_t padding[4] = {0xff, 0xff, 0xff, 0xff};
+		memcpy(padding, buffer + i, MIN(4, count-i));
+
+		retval = target_write_u32(target, NUC1X_FLASH_ISPADR, bank->base + offset + i);
+		if (retval != ERROR_OK)
+			return retval;
+		retval = target_write_memory(target, NUC1X_FLASH_ISPDAT, 4, 1, padding);
+		if (retval != ERROR_OK)
+			return retval;
+		retval = target_write_u32(target, NUC1X_FLASH_ISPTRG, ISPTRG_ISPGO);
+		if (retval != ERROR_OK)
+			return retval;
+
+		/* wait for busy to clear - check the GO flag */
+		timeout = 100;
+		for (;;) {
+			retval = target_read_u32(target, NUC1X_FLASH_ISPTRG, &status);
+			if (retval != ERROR_OK)
+				return retval;
+				LOG_DEBUG("status: 0x%" PRIx32 "", status);
+			if (status == 0)
+				break;
+			if (timeout-- <= 0) {
+				LOG_DEBUG("timed out waiting for flash");
+				return ERROR_FAIL;
+			}
+			busy_sleep(1);	/* can use busy sleep for short times. */
+		}
+
+		/* check for failure */
+		retval = target_read_u32(target, NUC1X_FLASH_ISPCON, &status);
+		if (retval != ERROR_OK)
+			return retval;
+		if ((status & ISPCON_ISPFF) != 0) {
+			LOG_DEBUG("failure: 0x%" PRIx32 "", status);
+			/* if bit is set, then must write to it to clear it. */
+			retval = target_write_u32(target, NUC1X_FLASH_ISPCON, ISPCON_ISPFF);
+			if (retval != ERROR_OK)
+				return retval;
+		} else {
+			LOG_DEBUG("writed OK");
+		}
+	}
+
+	retval = nuc1x_reset(bank);
+	if (retval != ERROR_OK)
+		return retval;
+
+	/* done, */
+	LOG_DEBUG("Write done.");
+
+	return ERROR_OK;
+}
+
+/* The probe routine for the nuc. Only recognizes the nuc120 right now. */
+static int nuc1x_probe(struct flash_bank *bank)
+{
+	struct target *target = bank->target;
+	struct nuc1x_flash_bank *nuc1x_info = bank->driver_priv;
+	int i;
+	uint16_t num_pages;
+	uint32_t device_id;
+	int page_size;
+	uint32_t base_address = 0x00000000;
+
+	nuc1x_info->probed = 0;
+
+	/* read nuc1x device id register */
+	int retval = target_read_u32(target, 0x50000000, &device_id);
+	if (retval != ERROR_OK)
+		return retval;
+
+	page_size = 512;	/* all nuc parts has 512 byte per sector */
+
+	/* search part numbers */
+	for (i = 0; NuMicroParts[i].partno; i++) {
+		if (NuMicroParts[i].partno == (device_id & 0x0FFFFFFF)) {
+			num_pages = NuMicroParts[i].num_page;
+			break;
+		}
+	}
+	if (!(NuMicroParts[i].partno == 0x00000000)) {
+		LOG_INFO("DeviceID : 0x%08" PRIx32 "", device_id);
+		LOG_INFO("Detect %s%CN!", NuMicroParts[i].partname, ('A'+(device_id>>28)));
+	} else {
+		LOG_INFO("No NUC Device Detected...");
+		return ERROR_FAIL;
+	}
+
+	if (bank->sectors) {
+		free(bank->sectors);
+		bank->sectors = NULL;
+	}
+
+	bank->base = base_address;
+	bank->size = (num_pages * page_size);
+	bank->num_sectors = num_pages;
+	bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
+
+	for (i = 0; i < num_pages; i++) {
+		bank->sectors[i].offset = i * page_size;
+		bank->sectors[i].size = page_size;
+		bank->sectors[i].is_erased = -1;
+		bank->sectors[i].is_protected = 1;
+	}
+
+	nuc1x_info->probed = 1;
+
+	LOG_DEBUG("Novoton NUC: Probed ...");
+
+	return ERROR_OK;
+}
+
+/* Standard approach to autoprobing. */
+static int nuc1x_auto_probe(struct flash_bank *bank)
+{
+	struct nuc1x_flash_bank *nuc1x_info = bank->driver_priv;
+	if (nuc1x_info->probed)
+		return ERROR_OK;
+	return nuc1x_probe(bank);
+}
+
+/* Info doesn't really add much, but works correctly. */
+static int get_nuc1x_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+	struct target *target = bank->target;
+	uint32_t i, device_id;
+
+	/* read nuc1x device id register */
+	int retval = target_read_u32(target, 0x50000000, &device_id);
+	if (retval != ERROR_OK)
+		return retval;
+
+	/* search part numbers */
+	for (i = 0; NuMicroParts[i].partno; i++) {
+		if (NuMicroParts[i].partno == (device_id & 0x0FFFFFFF))
+			break;
+	}
+	if (!(NuMicroParts[i].partno == 0x00000000)) {
+		LOG_INFO("DeviceID : 0x%08" PRIx32 "", device_id);
+		LOG_INFO("Detect %s%CN!", NuMicroParts[i].partname, ('A'+(device_id>>28)));
+	} else {
+		LOG_INFO("No NUC Device Detected...");
+		return ERROR_FAIL;
+	}
+
+	return ERROR_OK;
+}
+
+/* The nuc120 doesn't support mass erase, so this will probably be removed soon.
+ * The structure is left for now until I am sure I don't want to add any custom
+ * commands. */
+static int nuc1x_mass_erase(struct flash_bank *bank)
+{
+	struct target *target = bank->target;
+	int retval = ERROR_OK;
+
+	if (target->state != TARGET_HALTED) {
+		LOG_ERROR("Target not halted");
+		return ERROR_TARGET_NOT_HALTED;
+	}
+
+	LOG_INFO("Novoton NUC: Chip Erase ... (may take several seconds)");
+
+	return retval;
+}
+
+COMMAND_HANDLER(nuc1x_handle_mass_erase_command)
+{
+	int i; /* for erasing sectors */
+	if (CMD_ARGC < 1) {
+		command_print(CMD_CTX, "nuc1x mass_erase <bank>");
+		return ERROR_OK;
+	}
+
+	struct flash_bank *bank;
+	int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
+	if (ERROR_OK != retval)
+		return retval;
+
+	retval = nuc1x_mass_erase(bank);
+	if (retval == ERROR_OK) {
+		/* set all sectors as erased */
+		for (i = 0; i < bank->num_sectors; i++)
+			bank->sectors[i].is_erased = 1;
+
+		command_print(CMD_CTX, "nuc1x mass erase complete");
+	} else
+		command_print(CMD_CTX, "nuc1x mass erase failed");
+
+	return retval;
+}
+
+static const struct command_registration nuc1x_exec_command_handlers[] = {
+	{
+		.name = "mass_erase",
+		.handler = nuc1x_handle_mass_erase_command,
+		.mode = COMMAND_EXEC,
+		.usage = "bank_id",
+		.help = "Erase entire Flash device.",
+	},
+	COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration nuc1x_command_handlers[] = {
+	{
+		.name = "nuc1x",
+		.mode = COMMAND_ANY,
+		.help = "nuc1x Flash command group",
+		.chain = nuc1x_exec_command_handlers,
+	},
+	COMMAND_REGISTRATION_DONE
+};
+struct flash_driver nuc1x_flash = {
+	.name = "nuc1x",
+	.commands = nuc1x_command_handlers,
+	.flash_bank_command = nuc1x_flash_bank_command,
+	.erase = nuc1x_erase,
+	.write = nuc1x_write,
+	.read = default_flash_read,
+	.probe = nuc1x_probe,
+	.auto_probe = nuc1x_auto_probe,
+	.erase_check = default_flash_blank_check,
+	.protect_check = nuc1x_protect_check,
+	.info = get_nuc1x_info,
+};