board/siemens/common/factoryset.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  *
  * Read FactorySet information from EEPROM into global structure.
  * (C) Copyright 2013 Siemens Schweiz AG
  */

 #if !defined(CONFIG_SPL_BUILD)

 #include <common.h>
 #include <env.h>
 #include <dm.h>
 #include <env_internal.h>
 #include <i2c.h>
 #include <asm/io.h>
 #if !CONFIG_IS_ENABLED(TARGET_GIEDI) && !CONFIG_IS_ENABLED(TARGET_DENEB)
 #include <asm/arch/cpu.h>
 #endif
 #include <asm/arch/sys_proto.h>
 #include <asm/unaligned.h>
 #include <net.h>
 #include <errno.h>
 #include <g_dnl.h>
 #include "factoryset.h"

 #define EEPR_PG_SZ		0x80
 #define EEPROM_FATORYSET_OFFSET	0x400
 #define OFF_PG            EEPROM_FATORYSET_OFFSET/EEPR_PG_SZ

 /* Global variable that contains necessary information from FactorySet */
 struct factorysetcontainer factory_dat;

 #define fact_get_char(i) *((char *)&eeprom_buf[i])

 static int fact_match(unsigned char *eeprom_buf, uchar *s1, int i2)
 {
 	if (s1 == NULL)
 		return -1;

 	while (*s1 == fact_get_char(i2++))
 		if (*s1++ == '=')
 			return i2;

 	if (*s1 == '\0' && fact_get_char(i2-1) == '=')
 		return i2;

 	return -1;
 }

 static int get_factory_val(unsigned char *eeprom_buf, int size, uchar *name,
 			uchar *buf, int len)
 {
 	int i, nxt = 0;

 	for (i = 0; fact_get_char(i) != '\0'; i = nxt + 1) {
 		int val, n;

 		for (nxt = i; fact_get_char(nxt) != '\0'; ++nxt) {
 			if (nxt >= size)
 				return -1;
 		}

 		val = fact_match(eeprom_buf, (uchar *)name, i);
 		if (val < 0)
 			continue;

 		/* found; copy out */
 		for (n = 0; n < len; ++n, ++buf) {
 			*buf = fact_get_char(val++);
 			if (*buf == '\0')
 				return n;
 		}

 		if (n)
 			*--buf = '\0';

 		printf("env_buf [%d bytes] too small for value of \"%s\"\n",
 		       len, name);

 		return n;
 	}
 	return -1;
 }

 static
 int get_factory_record_val(unsigned char *eeprom_buf, int size,	uchar *record,
 	uchar *name, uchar *buf, int len)
 {
 	int ret = -1;
 	int i, nxt = 0;
 	int c;
 	unsigned char end = 0xff;
 	unsigned char tmp;

 	for (i = 0; fact_get_char(i) != end; i = nxt) {
 		nxt = i + 1;
 		if (fact_get_char(i) == '>') {
 			int pos;
 			int endpos;
 			int z;
 			int level = 0;

 			c = strncmp((char *)&eeprom_buf[i + 1], (char *)record,
 				    strlen((char *)record));
 			if (c == 0) {
 				/* record found */
 				pos = i + strlen((char *)record) + 2;
 				nxt = pos;
 				/* search for "<" */
 				c = -1;
 				for (z = pos; fact_get_char(z) != end; z++) {
 					if (fact_get_char(z) == '<') {
 						if (level == 0) {
 							endpos = z;
 							nxt = endpos;
 							c = 0;
 							break;
 						} else {
 							level--;
 						}
 					}
 					if (fact_get_char(z) == '>')
 						level++;
 				}
 			} else {
 				continue;
 			}
 			if (c == 0) {
 				/* end found -> call get_factory_val */
 				tmp = eeprom_buf[endpos];
 				eeprom_buf[endpos] = end;
 				ret = get_factory_val(&eeprom_buf[pos],
 					endpos - pos, name, buf, len);
 				/* fix buffer */
 				eeprom_buf[endpos] = tmp;
 				debug("%s: %s.%s = %s\n",
 				      __func__, record, name, buf);
 				return ret;
 			}
 		}
 	}
 	return ret;
 }

 int factoryset_read_eeprom(int i2c_addr)
 {
 	int i, pages = 0, size = 0;
 	unsigned char eeprom_buf[0x3c00], hdr[4], buf[MAX_STRING_LENGTH];
 	unsigned char *cp, *cp1;
 #if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *bus, *dev;
 	int ret;
 #endif

 #if defined(CONFIG_DFU_OVER_USB)
 	factory_dat.usb_vendor_id = CONFIG_USB_GADGET_VENDOR_NUM;
 	factory_dat.usb_product_id = CONFIG_USB_GADGET_PRODUCT_NUM;
 #endif

 #if CONFIG_IS_ENABLED(DM_I2C)
 	ret = uclass_get_device_by_seq(UCLASS_I2C, EEPROM_I2C_BUS, &bus);
 	if (ret)
 		goto err;

 	ret = dm_i2c_probe(bus, i2c_addr, 0, &dev);
 	if (ret)
 		goto err;

 	ret = i2c_set_chip_offset_len(dev, 2);
 	if (ret)
 		goto err;

 	ret = dm_i2c_read(dev, EEPROM_FATORYSET_OFFSET, hdr, sizeof(hdr));
 	if (ret)
 		goto err;
 #else
 	if (i2c_probe(i2c_addr))
 		goto err;

 	if (i2c_read(i2c_addr, EEPROM_FATORYSET_OFFSET, 2, hdr, sizeof(hdr)))
 		goto err;
 #endif

 	if ((hdr[0] != 0x99) || (hdr[1] != 0x80)) {
 		printf("FactorySet is not right in eeprom.\n");
 		return 1;
 	}

 	/* get FactorySet size */
 	size = (hdr[2] << 8) + hdr[3] + sizeof(hdr);
 	if (size > 0x3bfa)
 		size = 0x3bfa;

 	pages = size / EEPR_PG_SZ;

 	/*
 	 * read the eeprom using i2c
 	 * I can not read entire eeprom in once, so separate into several
 	 * times. Furthermore, fetch eeprom take longer time, so we fetch
 	 * data after every time we got a record from eeprom
 	 */
 	debug("Read eeprom page :\n");
 	for (i = 0; i < pages; i++) {
 #if CONFIG_IS_ENABLED(DM_I2C)
 		ret = dm_i2c_read(dev, (OFF_PG + i) * EEPR_PG_SZ,
 				  eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ);
 		if (ret)
 			goto err;
 #else
 		if (i2c_read(i2c_addr, (OFF_PG + i) * EEPR_PG_SZ, 2,
 			     eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ))
 			goto err;
 #endif
 	}

 	if (size % EEPR_PG_SZ) {
 #if CONFIG_IS_ENABLED(DM_I2C)
 		ret = dm_i2c_read(dev, (OFF_PG + pages) * EEPR_PG_SZ,
 				  eeprom_buf + (pages * EEPR_PG_SZ),
 				  size % EEPR_PG_SZ);
 		if (ret)
 			goto err;
 #else
 		if (i2c_read(i2c_addr, (OFF_PG + pages) * EEPR_PG_SZ, 2,
 			     eeprom_buf + (pages * EEPR_PG_SZ),
 			     (size % EEPR_PG_SZ)))
 			goto err;
 #endif
 	}

 	/* we do below just for eeprom align */
 	for (i = 0; i < size; i++)
 		if (eeprom_buf[i] == '\n')
 			eeprom_buf[i] = 0;

 	/* skip header */
 	size -= sizeof(hdr);
 	cp = (uchar *)eeprom_buf + sizeof(hdr);

 	/* get mac address */
 	get_factory_record_val(cp, size, (uchar *)"ETH1", (uchar *)"mac",
 			       buf, MAX_STRING_LENGTH);
 	cp1 = buf;
 	for (i = 0; i < 6; i++) {
 		factory_dat.mac[i] = simple_strtoul((char *)cp1, NULL, 16);
 		cp1 += 3;
 	}

 #if CONFIG_IS_ENABLED(TARGET_GIEDI) || CONFIG_IS_ENABLED(TARGET_DENEB)
 	/* get mac address for WLAN */
 	ret = get_factory_record_val(cp, size, (uchar *)"WLAN1", (uchar *)"mac",
 				     buf, MAX_STRING_LENGTH);
 	if (ret > 0) {
 		cp1 = buf;
 		for (i = 0; i < 6; i++) {
 			factory_dat.mac_wlan[i] = simple_strtoul((char *)cp1,
 								 NULL, 16);
 			cp1 += 3;
 		}
 	}
 #endif

 #if defined(CONFIG_DFU_OVER_USB)
 	/* read vid and pid for dfu mode */
 	if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
 					(uchar *)"vid", buf,
 					MAX_STRING_LENGTH)) {
 		factory_dat.usb_vendor_id = simple_strtoul((char *)buf,
 							   NULL, 16);
 	}

 	if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
 					(uchar *)"pid", buf,
 					MAX_STRING_LENGTH)) {
 		factory_dat.usb_product_id = simple_strtoul((char *)buf,
 							    NULL, 16);
 	}
 	printf("DFU USB: VID = 0x%4x, PID = 0x%4x\n", factory_dat.usb_vendor_id,
 	       factory_dat.usb_product_id);
 #endif
 #if defined(CONFIG_VIDEO)
 	if (0 <= get_factory_record_val(cp, size, (uchar *)"DISP1",
 					(uchar *)"name", factory_dat.disp_name,
 					MAX_STRING_LENGTH)) {
 		debug("display name: %s\n", factory_dat.disp_name);
 	}
 #endif
 	if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
 					(uchar *)"num", factory_dat.serial,
 					MAX_STRING_LENGTH)) {
 		debug("serial number: %s\n", factory_dat.serial);
 	}
 	if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
 					(uchar *)"ver", buf,
 					MAX_STRING_LENGTH)) {
 		factory_dat.version = simple_strtoul((char *)buf,
 							    NULL, 16);
 		debug("version number: %d\n", factory_dat.version);
 	}
 	/* Get ASN from factory set if available */
 	if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
 					(uchar *)"id", factory_dat.asn,
 					MAX_STRING_LENGTH)) {
 		debug("factoryset asn: %s\n", factory_dat.asn);
 	} else {
 		factory_dat.asn[0] = 0;
 	}
 	/* Get COMP/ver from factory set if available */
 	if (0 <= get_factory_record_val(cp, size, (uchar *)"COMP",
 					(uchar *)"ver",
 					factory_dat.comp_version,
 					MAX_STRING_LENGTH)) {
 		debug("factoryset COMP/ver: %s\n", factory_dat.comp_version);
 	} else {
 		strcpy((char *)factory_dat.comp_version, "1.0");
 	}

 	return 0;

 err:
 	printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n");
 	return 1;
 }

 static int get_mac_from_efuse(uint8_t mac[6])
 {
 #ifdef CONFIG_AM33XX
 	struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
 	uint32_t mac_hi, mac_lo;

 	mac_lo = readl(&cdev->macid0l);
 	mac_hi = readl(&cdev->macid0h);

 	mac[0] = mac_hi & 0xFF;
 	mac[1] = (mac_hi & 0xFF00) >> 8;
 	mac[2] = (mac_hi & 0xFF0000) >> 16;
 	mac[3] = (mac_hi & 0xFF000000) >> 24;
 	mac[4] = mac_lo & 0xFF;
 	mac[5] = (mac_lo & 0xFF00) >> 8;
 #else
 	/* unhandled */
 	memset(mac, 0, 6);
 #endif
 	if (!is_valid_ethaddr(mac)) {
 		puts("Warning: ethaddr not set by FactorySet or E-fuse. ");
 		puts("Set <ethaddr> variable to overcome this.\n");
 		return -1;
 	}
 	return 0;
 }

 static int factoryset_mac_env_set(void)
 {
 	uint8_t mac_addr[6];

 	/* Set mac from factoryset or try reading E-fuse */
 	debug("FactorySet: Set mac address\n");
 	if (is_valid_ethaddr(factory_dat.mac)) {
 		memcpy(mac_addr, factory_dat.mac, 6);
 	} else {
 		debug("Warning: FactorySet: <ethaddr> not set. Fallback to E-fuse\n");
 		if (get_mac_from_efuse(mac_addr) < 0)
 			return -1;
 	}

 	eth_env_set_enetaddr("ethaddr", mac_addr);

 #if CONFIG_IS_ENABLED(TARGET_GIEDI) || CONFIG_IS_ENABLED(TARGET_DENEB)
 	eth_env_set_enetaddr("eth1addr", mac_addr);

 	/* wlan mac */
 	if (is_valid_ethaddr(factory_dat.mac_wlan))
 		eth_env_set_enetaddr("eth2addr", factory_dat.mac_wlan);
 #endif
 	return 0;
 }

 static void factoryset_dtb_env_set(void)
 {
 	/* Set ASN in environment*/
 	if (factory_dat.asn[0] != 0) {
 		env_set("dtb_name", (char *)factory_dat.asn);
 	} else {
 		/* dtb suffix gets added in load script */
 		env_set("dtb_name", "default");
 	}
 }

 int factoryset_env_set(void)
 {
 	int ret = 0;

 	factoryset_dtb_env_set();

 	if (factoryset_mac_env_set() < 0)
 		ret = -1;

 	return ret;
 }

 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 {
 	put_unaligned(factory_dat.usb_vendor_id, &dev->idVendor);
 	put_unaligned(factory_dat.usb_product_id, &dev->idProduct);
 	g_dnl_set_serialnumber((char *)factory_dat.serial);

 	return 0;
 }

 int g_dnl_get_board_bcd_device_number(int gcnum)
 {
 	return factory_dat.version;
 }
 #endif /* defined(CONFIG_SPL_BUILD) */
	// SPDX-License-Identifier: GPL-2.0+
	/*
	*
	* Read FactorySet information from EEPROM into global structure.
	* (C) Copyright 2013 Siemens Schweiz AG
	*/

	#if !defined(CONFIG_SPL_BUILD)

	#include <common.h>
	#include <env.h>
	#include <dm.h>
	#include <env_internal.h>
	#include <i2c.h>
	#include <asm/io.h>
	#if !CONFIG_IS_ENABLED(TARGET_GIEDI) && !CONFIG_IS_ENABLED(TARGET_DENEB)
	#include <asm/arch/cpu.h>
	#endif
	#include <asm/arch/sys_proto.h>
	#include <asm/unaligned.h>
	#include <net.h>
	#include <errno.h>
	#include <g_dnl.h>
	#include "factoryset.h"

	#define EEPR_PG_SZ 0x80
	#define EEPROM_FATORYSET_OFFSET 0x400
	#define OFF_PG EEPROM_FATORYSET_OFFSET/EEPR_PG_SZ

	/* Global variable that contains necessary information from FactorySet */
	struct factorysetcontainer factory_dat;

	#define fact_get_char(i) ((char )&eeprom_buf[i])

	static int fact_match(unsigned char eeprom_buf, uchar s1, int i2)
	{
	if (s1 == NULL)
	return -1;

	while (*s1 == fact_get_char(i2++))
	if (*s1++ == '=')
	return i2;

	if (*s1 == '\0' && fact_get_char(i2-1) == '=')
	return i2;

	return -1;
	}

	static int get_factory_val(unsigned char eeprom_buf, int size, uchar name,
	uchar *buf, int len)
	{
	int i, nxt = 0;

	for (i = 0; fact_get_char(i) != '\0'; i = nxt + 1) {
	int val, n;

	for (nxt = i; fact_get_char(nxt) != '\0'; ++nxt) {
	if (nxt >= size)
	return -1;
	}

	val = fact_match(eeprom_buf, (uchar *)name, i);
	if (val < 0)
	continue;

	/* found; copy out */
	for (n = 0; n < len; ++n, ++buf) {
	*buf = fact_get_char(val++);
	if (*buf == '\0')
	return n;
	}

	if (n)
	*--buf = '\0';

	printf("env_buf [%d bytes] too small for value of \"%s\"\n",
	len, name);

	return n;
	}
	return -1;
	}

	static
	int get_factory_record_val(unsigned char eeprom_buf, int size, uchar record,
	uchar name, uchar buf, int len)
	{
	int ret = -1;
	int i, nxt = 0;
	int c;
	unsigned char end = 0xff;
	unsigned char tmp;

	for (i = 0; fact_get_char(i) != end; i = nxt) {
	nxt = i + 1;
	if (fact_get_char(i) == '>') {
	int pos;
	int endpos;
	int z;
	int level = 0;

	c = strncmp((char )&eeprom_buf[i + 1], (char )record,
	strlen((char *)record));
	if (c == 0) {
	/* record found */
	pos = i + strlen((char *)record) + 2;
	nxt = pos;
	/* search for "<" */
	c = -1;
	for (z = pos; fact_get_char(z) != end; z++) {
	if (fact_get_char(z) == '<') {
	if (level == 0) {
	endpos = z;
	nxt = endpos;
	c = 0;
	break;
	} else {
	level--;
	}
	}
	if (fact_get_char(z) == '>')
	level++;
	}
	} else {
	continue;
	}
	if (c == 0) {
	/* end found -> call get_factory_val */
	tmp = eeprom_buf[endpos];
	eeprom_buf[endpos] = end;
	ret = get_factory_val(&eeprom_buf[pos],
	endpos - pos, name, buf, len);
	/* fix buffer */
	eeprom_buf[endpos] = tmp;
	debug("%s: %s.%s = %s\n",
	__func__, record, name, buf);
	return ret;
	}
	}
	}
	return ret;
	}

	int factoryset_read_eeprom(int i2c_addr)
	{
	int i, pages = 0, size = 0;
	unsigned char eeprom_buf[0x3c00], hdr[4], buf[MAX_STRING_LENGTH];
	unsigned char cp, cp1;
	#if CONFIG_IS_ENABLED(DM_I2C)
	struct udevice bus, dev;
	int ret;
	#endif

	#if defined(CONFIG_DFU_OVER_USB)
	factory_dat.usb_vendor_id = CONFIG_USB_GADGET_VENDOR_NUM;
	factory_dat.usb_product_id = CONFIG_USB_GADGET_PRODUCT_NUM;
	#endif

	#if CONFIG_IS_ENABLED(DM_I2C)
	ret = uclass_get_device_by_seq(UCLASS_I2C, EEPROM_I2C_BUS, &bus);
	if (ret)
	goto err;

	ret = dm_i2c_probe(bus, i2c_addr, 0, &dev);
	if (ret)
	goto err;

	ret = i2c_set_chip_offset_len(dev, 2);
	if (ret)
	goto err;

	ret = dm_i2c_read(dev, EEPROM_FATORYSET_OFFSET, hdr, sizeof(hdr));
	if (ret)
	goto err;
	#else
	if (i2c_probe(i2c_addr))
	goto err;

	if (i2c_read(i2c_addr, EEPROM_FATORYSET_OFFSET, 2, hdr, sizeof(hdr)))
	goto err;
	#endif

	if ((hdr[0] != 0x99) \|\| (hdr[1] != 0x80)) {
	printf("FactorySet is not right in eeprom.\n");
	return 1;
	}

	/* get FactorySet size */
	size = (hdr[2] << 8) + hdr[3] + sizeof(hdr);
	if (size > 0x3bfa)
	size = 0x3bfa;

	pages = size / EEPR_PG_SZ;

	/*
	* read the eeprom using i2c
	* I can not read entire eeprom in once, so separate into several
	* times. Furthermore, fetch eeprom take longer time, so we fetch
	* data after every time we got a record from eeprom
	*/
	debug("Read eeprom page :\n");
	for (i = 0; i < pages; i++) {
	#if CONFIG_IS_ENABLED(DM_I2C)
	ret = dm_i2c_read(dev, (OFF_PG + i) * EEPR_PG_SZ,
	eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ);
	if (ret)
	goto err;
	#else
	if (i2c_read(i2c_addr, (OFF_PG + i) * EEPR_PG_SZ, 2,
	eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ))
	goto err;
	#endif
	}

	if (size % EEPR_PG_SZ) {
	#if CONFIG_IS_ENABLED(DM_I2C)
	ret = dm_i2c_read(dev, (OFF_PG + pages) * EEPR_PG_SZ,
	eeprom_buf + (pages * EEPR_PG_SZ),
	size % EEPR_PG_SZ);
	if (ret)
	goto err;
	#else
	if (i2c_read(i2c_addr, (OFF_PG + pages) * EEPR_PG_SZ, 2,
	eeprom_buf + (pages * EEPR_PG_SZ),
	(size % EEPR_PG_SZ)))
	goto err;
	#endif
	}

	/* we do below just for eeprom align */
	for (i = 0; i < size; i++)
	if (eeprom_buf[i] == '\n')
	eeprom_buf[i] = 0;

	/* skip header */
	size -= sizeof(hdr);
	cp = (uchar *)eeprom_buf + sizeof(hdr);

	/* get mac address */
	get_factory_record_val(cp, size, (uchar )"ETH1", (uchar )"mac",
	buf, MAX_STRING_LENGTH);
	cp1 = buf;
	for (i = 0; i < 6; i++) {
	factory_dat.mac[i] = simple_strtoul((char *)cp1, NULL, 16);
	cp1 += 3;
	}

	#if CONFIG_IS_ENABLED(TARGET_GIEDI) \|\| CONFIG_IS_ENABLED(TARGET_DENEB)
	/* get mac address for WLAN */
	ret = get_factory_record_val(cp, size, (uchar )"WLAN1", (uchar )"mac",
	buf, MAX_STRING_LENGTH);
	if (ret > 0) {
	cp1 = buf;
	for (i = 0; i < 6; i++) {
	factory_dat.mac_wlan[i] = simple_strtoul((char *)cp1,
	NULL, 16);
	cp1 += 3;
	}
	}
	#endif

	#if defined(CONFIG_DFU_OVER_USB)
	/* read vid and pid for dfu mode */
	if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
	(uchar *)"vid", buf,
	MAX_STRING_LENGTH)) {
	factory_dat.usb_vendor_id = simple_strtoul((char *)buf,
	NULL, 16);
	}

	if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
	(uchar *)"pid", buf,
	MAX_STRING_LENGTH)) {
	factory_dat.usb_product_id = simple_strtoul((char *)buf,
	NULL, 16);
	}
	printf("DFU USB: VID = 0x%4x, PID = 0x%4x\n", factory_dat.usb_vendor_id,
	factory_dat.usb_product_id);
	#endif
	#if defined(CONFIG_VIDEO)
	if (0 <= get_factory_record_val(cp, size, (uchar *)"DISP1",
	(uchar *)"name", factory_dat.disp_name,
	MAX_STRING_LENGTH)) {
	debug("display name: %s\n", factory_dat.disp_name);
	}
	#endif
	if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
	(uchar *)"num", factory_dat.serial,
	MAX_STRING_LENGTH)) {
	debug("serial number: %s\n", factory_dat.serial);
	}
	if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
	(uchar *)"ver", buf,
	MAX_STRING_LENGTH)) {
	factory_dat.version = simple_strtoul((char *)buf,
	NULL, 16);
	debug("version number: %d\n", factory_dat.version);
	}
	/* Get ASN from factory set if available */
	if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
	(uchar *)"id", factory_dat.asn,
	MAX_STRING_LENGTH)) {
	debug("factoryset asn: %s\n", factory_dat.asn);
	} else {
	factory_dat.asn[0] = 0;
	}
	/* Get COMP/ver from factory set if available */
	if (0 <= get_factory_record_val(cp, size, (uchar *)"COMP",
	(uchar *)"ver",
	factory_dat.comp_version,
	MAX_STRING_LENGTH)) {
	debug("factoryset COMP/ver: %s\n", factory_dat.comp_version);
	} else {
	strcpy((char *)factory_dat.comp_version, "1.0");
	}

	return 0;

	err:
	printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n");
	return 1;
	}

	static int get_mac_from_efuse(uint8_t mac[6])
	{
	#ifdef CONFIG_AM33XX
	struct ctrl_dev cdev = (struct ctrl_dev )CTRL_DEVICE_BASE;
	uint32_t mac_hi, mac_lo;

	mac_lo = readl(&cdev->macid0l);
	mac_hi = readl(&cdev->macid0h);

	mac[0] = mac_hi & 0xFF;
	mac[1] = (mac_hi & 0xFF00) >> 8;
	mac[2] = (mac_hi & 0xFF0000) >> 16;
	mac[3] = (mac_hi & 0xFF000000) >> 24;
	mac[4] = mac_lo & 0xFF;
	mac[5] = (mac_lo & 0xFF00) >> 8;
	#else
	/* unhandled */
	memset(mac, 0, 6);
	#endif
	if (!is_valid_ethaddr(mac)) {
	puts("Warning: ethaddr not set by FactorySet or E-fuse. ");
	puts("Set <ethaddr> variable to overcome this.\n");
	return -1;
	}
	return 0;
	}

	static int factoryset_mac_env_set(void)
	{
	uint8_t mac_addr[6];

	/* Set mac from factoryset or try reading E-fuse */
	debug("FactorySet: Set mac address\n");
	if (is_valid_ethaddr(factory_dat.mac)) {
	memcpy(mac_addr, factory_dat.mac, 6);
	} else {
	debug("Warning: FactorySet: <ethaddr> not set. Fallback to E-fuse\n");
	if (get_mac_from_efuse(mac_addr) < 0)
	return -1;
	}

	eth_env_set_enetaddr("ethaddr", mac_addr);

	#if CONFIG_IS_ENABLED(TARGET_GIEDI) \|\| CONFIG_IS_ENABLED(TARGET_DENEB)
	eth_env_set_enetaddr("eth1addr", mac_addr);

	/* wlan mac */
	if (is_valid_ethaddr(factory_dat.mac_wlan))
	eth_env_set_enetaddr("eth2addr", factory_dat.mac_wlan);
	#endif
	return 0;
	}

	static void factoryset_dtb_env_set(void)
	{
	/* Set ASN in environment*/
	if (factory_dat.asn[0] != 0) {
	env_set("dtb_name", (char *)factory_dat.asn);
	} else {
	/* dtb suffix gets added in load script */
	env_set("dtb_name", "default");
	}
	}

	int factoryset_env_set(void)
	{
	int ret = 0;

	factoryset_dtb_env_set();

	if (factoryset_mac_env_set() < 0)
	ret = -1;

	return ret;
	}

	int g_dnl_bind_fixup(struct usb_device_descriptor dev, const char name)
	{
	put_unaligned(factory_dat.usb_vendor_id, &dev->idVendor);
	put_unaligned(factory_dat.usb_product_id, &dev->idProduct);
	g_dnl_set_serialnumber((char *)factory_dat.serial);

	return 0;
	}

	int g_dnl_get_board_bcd_device_number(int gcnum)
	{
	return factory_dat.version;
	}
	#endif /* defined(CONFIG_SPL_BUILD) */