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// 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 <env.h>
#include <g_dnl.h>
#include <net.h>
#include <asm/io.h>
#if CONFIG_IS_ENABLED(AM33XX)
#include <asm/arch/cpu.h>
#endif
#include "eeprom.h"
#include "factoryset.h"
#define EEPR_PG_SZ 0x80
#define OFF_PG (SIEMENS_EE_ADDR_FACTORYSET / 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 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 (siemens_ee_read_data(SIEMENS_EE_ADDR_FACTORYSET, hdr, sizeof(hdr)))
goto err;
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 (siemens_ee_read_data((OFF_PG + i) * EEPR_PG_SZ,
eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ))
goto err;
if (size % EEPR_PG_SZ)
if (siemens_ee_read_data((OFF_PG + pages) * EEPR_PG_SZ,
eeprom_buf + (pages * EEPR_PG_SZ),
size % EEPR_PG_SZ))
goto err;
/* 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] = hextoul((char *)cp1, NULL);
cp1 += 3;
}
#if CONFIG_IS_ENABLED(IMX8)
/* get mac address for WLAN */
if (get_factory_record_val(cp, size, (uchar *)"WLAN1", (uchar *)"mac",
buf, MAX_STRING_LENGTH) > 0) {
cp1 = buf;
for (i = 0; i < 6; i++) {
factory_dat.mac_wlan[i] = hextoul((char *)cp1, NULL);
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 = hextoul((char *)buf, NULL);
}
if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
(uchar *)"pid", buf,
MAX_STRING_LENGTH)) {
factory_dat.usb_product_id = hextoul((char *)buf, NULL);
}
printf("DFU USB: VID = 0x%4x, PID = 0x%4x\n", factory_dat.usb_vendor_id,
factory_dat.usb_product_id);
#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 = hextoul((char *)buf, NULL);
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(IMX8)
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) */