1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 *
4 * Read FactorySet information from EEPROM into global structure.
5 * (C) Copyright 2013 Siemens Schweiz AG
6 */
7
8 #if !defined(CONFIG_SPL_BUILD)
9
10 #include <common.h>
11 #include <environment.h>
12 #include <i2c.h>
13 #include <asm/io.h>
14 #include <asm/arch/cpu.h>
15 #include <asm/arch/sys_proto.h>
16 #include <asm/unaligned.h>
17 #include <net.h>
18 #include <errno.h>
19 #include <g_dnl.h>
20 #include "factoryset.h"
21
22 #define EEPR_PG_SZ 0x80
23 #define EEPROM_FATORYSET_OFFSET 0x400
24 #define OFF_PG EEPROM_FATORYSET_OFFSET/EEPR_PG_SZ
25
26 /* Global variable that contains necessary information from FactorySet */
27 struct factorysetcontainer factory_dat;
28
29 #define fact_get_char(i) *((char *)&eeprom_buf[i])
30
fact_match(unsigned char * eeprom_buf,uchar * s1,int i2)31 static int fact_match(unsigned char *eeprom_buf, uchar *s1, int i2)
32 {
33 if (s1 == NULL)
34 return -1;
35
36 while (*s1 == fact_get_char(i2++))
37 if (*s1++ == '=')
38 return i2;
39
40 if (*s1 == '\0' && fact_get_char(i2-1) == '=')
41 return i2;
42
43 return -1;
44 }
45
get_factory_val(unsigned char * eeprom_buf,int size,uchar * name,uchar * buf,int len)46 static int get_factory_val(unsigned char *eeprom_buf, int size, uchar *name,
47 uchar *buf, int len)
48 {
49 int i, nxt = 0;
50
51 for (i = 0; fact_get_char(i) != '\0'; i = nxt + 1) {
52 int val, n;
53
54 for (nxt = i; fact_get_char(nxt) != '\0'; ++nxt) {
55 if (nxt >= size)
56 return -1;
57 }
58
59 val = fact_match(eeprom_buf, (uchar *)name, i);
60 if (val < 0)
61 continue;
62
63 /* found; copy out */
64 for (n = 0; n < len; ++n, ++buf) {
65 *buf = fact_get_char(val++);
66 if (*buf == '\0')
67 return n;
68 }
69
70 if (n)
71 *--buf = '\0';
72
73 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
74 len, name);
75
76 return n;
77 }
78 return -1;
79 }
80
81 static
get_factory_record_val(unsigned char * eeprom_buf,int size,uchar * record,uchar * name,uchar * buf,int len)82 int get_factory_record_val(unsigned char *eeprom_buf, int size, uchar *record,
83 uchar *name, uchar *buf, int len)
84 {
85 int ret = -1;
86 int i, nxt = 0;
87 int c;
88 unsigned char end = 0xff;
89 unsigned char tmp;
90
91 for (i = 0; fact_get_char(i) != end; i = nxt) {
92 nxt = i + 1;
93 if (fact_get_char(i) == '>') {
94 int pos;
95 int endpos;
96 int z;
97 int level = 0;
98
99 c = strncmp((char *)&eeprom_buf[i + 1], (char *)record,
100 strlen((char *)record));
101 if (c == 0) {
102 /* record found */
103 pos = i + strlen((char *)record) + 2;
104 nxt = pos;
105 /* search for "<" */
106 c = -1;
107 for (z = pos; fact_get_char(z) != end; z++) {
108 if (fact_get_char(z) == '<') {
109 if (level == 0) {
110 endpos = z;
111 nxt = endpos;
112 c = 0;
113 break;
114 } else {
115 level--;
116 }
117 }
118 if (fact_get_char(z) == '>')
119 level++;
120 }
121 } else {
122 continue;
123 }
124 if (c == 0) {
125 /* end found -> call get_factory_val */
126 tmp = eeprom_buf[endpos];
127 eeprom_buf[endpos] = end;
128 ret = get_factory_val(&eeprom_buf[pos],
129 endpos - pos, name, buf, len);
130 /* fix buffer */
131 eeprom_buf[endpos] = tmp;
132 debug("%s: %s.%s = %s\n",
133 __func__, record, name, buf);
134 return ret;
135 }
136 }
137 }
138 return ret;
139 }
140
factoryset_read_eeprom(int i2c_addr)141 int factoryset_read_eeprom(int i2c_addr)
142 {
143 int i, pages = 0, size = 0;
144 unsigned char eeprom_buf[0x3c00], hdr[4], buf[MAX_STRING_LENGTH];
145 unsigned char *cp, *cp1;
146
147 #if defined(CONFIG_DFU_OVER_USB)
148 factory_dat.usb_vendor_id = CONFIG_USB_GADGET_VENDOR_NUM;
149 factory_dat.usb_product_id = CONFIG_USB_GADGET_PRODUCT_NUM;
150 #endif
151 if (i2c_probe(i2c_addr))
152 goto err;
153
154 if (i2c_read(i2c_addr, EEPROM_FATORYSET_OFFSET, 2, hdr, sizeof(hdr)))
155 goto err;
156
157 if ((hdr[0] != 0x99) || (hdr[1] != 0x80)) {
158 printf("FactorySet is not right in eeprom.\n");
159 return 1;
160 }
161
162 /* get FactorySet size */
163 size = (hdr[2] << 8) + hdr[3] + sizeof(hdr);
164 if (size > 0x3bfa)
165 size = 0x3bfa;
166
167 pages = size / EEPR_PG_SZ;
168
169 /*
170 * read the eeprom using i2c
171 * I can not read entire eeprom in once, so separate into several
172 * times. Furthermore, fetch eeprom take longer time, so we fetch
173 * data after every time we got a record from eeprom
174 */
175 debug("Read eeprom page :\n");
176 for (i = 0; i < pages; i++)
177 if (i2c_read(i2c_addr, (OFF_PG + i) * EEPR_PG_SZ, 2,
178 eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ))
179 goto err;
180
181 if (size % EEPR_PG_SZ)
182 if (i2c_read(i2c_addr, (OFF_PG + pages) * EEPR_PG_SZ, 2,
183 eeprom_buf + (pages * EEPR_PG_SZ),
184 (size % EEPR_PG_SZ)))
185 goto err;
186
187 /* we do below just for eeprom align */
188 for (i = 0; i < size; i++)
189 if (eeprom_buf[i] == '\n')
190 eeprom_buf[i] = 0;
191
192 /* skip header */
193 size -= sizeof(hdr);
194 cp = (uchar *)eeprom_buf + sizeof(hdr);
195
196 /* get mac address */
197 get_factory_record_val(cp, size, (uchar *)"ETH1", (uchar *)"mac",
198 buf, MAX_STRING_LENGTH);
199 cp1 = buf;
200 for (i = 0; i < 6; i++) {
201 factory_dat.mac[i] = simple_strtoul((char *)cp1, NULL, 16);
202 cp1 += 3;
203 }
204
205 #if defined(CONFIG_DFU_OVER_USB)
206 /* read vid and pid for dfu mode */
207 if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
208 (uchar *)"vid", buf,
209 MAX_STRING_LENGTH)) {
210 factory_dat.usb_vendor_id = simple_strtoul((char *)buf,
211 NULL, 16);
212 }
213
214 if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
215 (uchar *)"pid", buf,
216 MAX_STRING_LENGTH)) {
217 factory_dat.usb_product_id = simple_strtoul((char *)buf,
218 NULL, 16);
219 }
220 printf("DFU USB: VID = 0x%4x, PID = 0x%4x\n", factory_dat.usb_vendor_id,
221 factory_dat.usb_product_id);
222 #endif
223 #if defined(CONFIG_VIDEO)
224 if (0 <= get_factory_record_val(cp, size, (uchar *)"DISP1",
225 (uchar *)"name", factory_dat.disp_name,
226 MAX_STRING_LENGTH)) {
227 debug("display name: %s\n", factory_dat.disp_name);
228 }
229 #endif
230 if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
231 (uchar *)"num", factory_dat.serial,
232 MAX_STRING_LENGTH)) {
233 debug("serial number: %s\n", factory_dat.serial);
234 }
235 if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
236 (uchar *)"ver", buf,
237 MAX_STRING_LENGTH)) {
238 factory_dat.version = simple_strtoul((char *)buf,
239 NULL, 16);
240 debug("version number: %d\n", factory_dat.version);
241 }
242 /* Get ASN from factory set if available */
243 if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
244 (uchar *)"id", factory_dat.asn,
245 MAX_STRING_LENGTH)) {
246 debug("factoryset asn: %s\n", factory_dat.asn);
247 } else {
248 factory_dat.asn[0] = 0;
249 }
250 /* Get COMP/ver from factory set if available */
251 if (0 <= get_factory_record_val(cp, size, (uchar *)"COMP",
252 (uchar *)"ver",
253 factory_dat.comp_version,
254 MAX_STRING_LENGTH)) {
255 debug("factoryset COMP/ver: %s\n", factory_dat.comp_version);
256 } else {
257 strcpy((char *)factory_dat.comp_version, "1.0");
258 }
259
260 return 0;
261
262 err:
263 printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n");
264 return 1;
265 }
266
267 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
268
factoryset_mac_env_set(void)269 static int factoryset_mac_env_set(void)
270 {
271 uint8_t mac_addr[6];
272
273 debug("FactorySet: Set mac address\n");
274 if (is_valid_ethaddr(factory_dat.mac)) {
275 memcpy(mac_addr, factory_dat.mac, 6);
276 } else {
277 uint32_t mac_hi, mac_lo;
278
279 debug("Warning: FactorySet: <ethaddr> not set. Fallback to E-fuse\n");
280 mac_lo = readl(&cdev->macid0l);
281 mac_hi = readl(&cdev->macid0h);
282
283 mac_addr[0] = mac_hi & 0xFF;
284 mac_addr[1] = (mac_hi & 0xFF00) >> 8;
285 mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
286 mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
287 mac_addr[4] = mac_lo & 0xFF;
288 mac_addr[5] = (mac_lo & 0xFF00) >> 8;
289 if (!is_valid_ethaddr(mac_addr)) {
290 printf("Warning: ethaddr not set by FactorySet or E-fuse. Set <ethaddr> variable to overcome this.\n");
291 return -1;
292 }
293 }
294
295 eth_env_set_enetaddr("ethaddr", mac_addr);
296 return 0;
297 }
298
factoryset_env_set(void)299 int factoryset_env_set(void)
300 {
301 int ret = 0;
302
303 if (factoryset_mac_env_set() < 0)
304 ret = -1;
305
306 return ret;
307 }
308
g_dnl_bind_fixup(struct usb_device_descriptor * dev,const char * name)309 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
310 {
311 put_unaligned(factory_dat.usb_vendor_id, &dev->idVendor);
312 put_unaligned(factory_dat.usb_product_id, &dev->idProduct);
313 g_dnl_set_serialnumber((char *)factory_dat.serial);
314
315 return 0;
316 }
317
g_dnl_get_board_bcd_device_number(int gcnum)318 int g_dnl_get_board_bcd_device_number(int gcnum)
319 {
320 return factory_dat.version;
321 }
322 #endif /* defined(CONFIG_SPL_BUILD) */
323