1 /* 2 * 3 * Read FactorySet information from EEPROM into global structure. 4 * (C) Copyright 2013 Siemens Schweiz AG 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #if !defined(CONFIG_SPL_BUILD) 10 11 #include <common.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 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 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 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 90 for (i = 0; fact_get_char(i) != end; i = nxt) { 91 nxt = i + 1; 92 if (fact_get_char(i) == '>') { 93 int pos; 94 int endpos; 95 int z; 96 97 c = strncmp((char *)&eeprom_buf[i + 1], (char *)record, 98 strlen((char *)record)); 99 if (c == 0) { 100 /* record found */ 101 pos = i + strlen((char *)record) + 2; 102 nxt = pos; 103 /* search for "<" */ 104 c = -1; 105 for (z = pos; fact_get_char(z) != end; z++) { 106 if ((fact_get_char(z) == '<') || 107 (fact_get_char(z) == '>')) { 108 endpos = z; 109 nxt = endpos; 110 c = 0; 111 break; 112 } 113 } 114 } 115 if (c == 0) { 116 /* end found -> call get_factory_val */ 117 eeprom_buf[endpos] = end; 118 ret = get_factory_val(&eeprom_buf[pos], 119 size - pos, name, buf, len); 120 /* fix buffer */ 121 eeprom_buf[endpos] = '<'; 122 debug("%s: %s.%s = %s\n", 123 __func__, record, name, buf); 124 return ret; 125 } 126 } 127 } 128 return ret; 129 } 130 131 int factoryset_read_eeprom(int i2c_addr) 132 { 133 int i, pages = 0, size = 0; 134 unsigned char eeprom_buf[0x3c00], hdr[4], buf[MAX_STRING_LENGTH]; 135 unsigned char *cp, *cp1; 136 137 #if defined(CONFIG_DFU_FUNCTION) 138 factory_dat.usb_vendor_id = CONFIG_G_DNL_VENDOR_NUM; 139 factory_dat.usb_product_id = CONFIG_G_DNL_PRODUCT_NUM; 140 #endif 141 if (i2c_probe(i2c_addr)) 142 goto err; 143 144 if (i2c_read(i2c_addr, EEPROM_FATORYSET_OFFSET, 2, hdr, sizeof(hdr))) 145 goto err; 146 147 if ((hdr[0] != 0x99) || (hdr[1] != 0x80)) { 148 printf("FactorySet is not right in eeprom.\n"); 149 return 1; 150 } 151 152 /* get FactorySet size */ 153 size = (hdr[2] << 8) + hdr[3] + sizeof(hdr); 154 if (size > 0x3bfa) 155 size = 0x3bfa; 156 157 pages = size / EEPR_PG_SZ; 158 159 /* 160 * read the eeprom using i2c 161 * I can not read entire eeprom in once, so separate into several 162 * times. Furthermore, fetch eeprom take longer time, so we fetch 163 * data after every time we got a record from eeprom 164 */ 165 debug("Read eeprom page :\n"); 166 for (i = 0; i < pages; i++) 167 if (i2c_read(i2c_addr, (OFF_PG + i) * EEPR_PG_SZ, 2, 168 eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ)) 169 goto err; 170 171 if (size % EEPR_PG_SZ) 172 if (i2c_read(i2c_addr, (OFF_PG + pages) * EEPR_PG_SZ, 2, 173 eeprom_buf + (pages * EEPR_PG_SZ), 174 (size % EEPR_PG_SZ))) 175 goto err; 176 177 /* we do below just for eeprom align */ 178 for (i = 0; i < size; i++) 179 if (eeprom_buf[i] == '\n') 180 eeprom_buf[i] = 0; 181 182 /* skip header */ 183 size -= sizeof(hdr); 184 cp = (uchar *)eeprom_buf + sizeof(hdr); 185 186 /* get mac address */ 187 get_factory_record_val(cp, size, (uchar *)"ETH1", (uchar *)"mac", 188 buf, MAX_STRING_LENGTH); 189 cp1 = buf; 190 for (i = 0; i < 6; i++) { 191 factory_dat.mac[i] = simple_strtoul((char *)cp1, NULL, 16); 192 cp1 += 3; 193 } 194 195 #if defined(CONFIG_DFU_FUNCTION) 196 /* read vid and pid for dfu mode */ 197 if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1", 198 (uchar *)"vid", buf, 199 MAX_STRING_LENGTH)) { 200 factory_dat.usb_vendor_id = simple_strtoul((char *)buf, 201 NULL, 16); 202 } 203 204 if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1", 205 (uchar *)"pid", buf, 206 MAX_STRING_LENGTH)) { 207 factory_dat.usb_product_id = simple_strtoul((char *)buf, 208 NULL, 16); 209 } 210 printf("DFU USB: VID = 0x%4x, PID = 0x%4x\n", factory_dat.usb_vendor_id, 211 factory_dat.usb_product_id); 212 #endif 213 if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV", 214 (uchar *)"id", buf, 215 MAX_STRING_LENGTH)) { 216 if (strncmp((const char *)buf, "PXM50", 5) == 0) 217 factory_dat.pxm50 = 1; 218 else 219 factory_dat.pxm50 = 0; 220 } 221 debug("PXM50: %d\n", factory_dat.pxm50); 222 #if defined(CONFIG_VIDEO) 223 if (0 <= get_factory_record_val(cp, size, (uchar *)"DISP1", 224 (uchar *)"name", factory_dat.disp_name, 225 MAX_STRING_LENGTH)) { 226 debug("display name: %s\n", factory_dat.disp_name); 227 } 228 #endif 229 if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV", 230 (uchar *)"num", factory_dat.serial, 231 MAX_STRING_LENGTH)) { 232 debug("serial number: %s\n", factory_dat.serial); 233 } 234 if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV", 235 (uchar *)"ver", buf, 236 MAX_STRING_LENGTH)) { 237 factory_dat.version = simple_strtoul((char *)buf, 238 NULL, 16); 239 debug("version number: %d\n", factory_dat.version); 240 } 241 242 return 0; 243 244 err: 245 printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n"); 246 return 1; 247 } 248 249 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; 250 251 static int factoryset_mac_setenv(void) 252 { 253 uint8_t mac_addr[6]; 254 255 debug("FactorySet: Set mac address\n"); 256 if (is_valid_ether_addr(factory_dat.mac)) { 257 memcpy(mac_addr, factory_dat.mac, 6); 258 } else { 259 uint32_t mac_hi, mac_lo; 260 261 debug("Warning: FactorySet: <ethaddr> not set. Fallback to E-fuse\n"); 262 mac_lo = readl(&cdev->macid0l); 263 mac_hi = readl(&cdev->macid0h); 264 265 mac_addr[0] = mac_hi & 0xFF; 266 mac_addr[1] = (mac_hi & 0xFF00) >> 8; 267 mac_addr[2] = (mac_hi & 0xFF0000) >> 16; 268 mac_addr[3] = (mac_hi & 0xFF000000) >> 24; 269 mac_addr[4] = mac_lo & 0xFF; 270 mac_addr[5] = (mac_lo & 0xFF00) >> 8; 271 if (!is_valid_ether_addr(mac_addr)) { 272 printf("Warning: ethaddr not set by FactorySet or E-fuse. Set <ethaddr> variable to overcome this.\n"); 273 return -1; 274 } 275 } 276 277 eth_setenv_enetaddr("ethaddr", mac_addr); 278 return 0; 279 } 280 281 int factoryset_setenv(void) 282 { 283 int ret = 0; 284 285 if (factoryset_mac_setenv() < 0) 286 ret = -1; 287 288 return ret; 289 } 290 291 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name) 292 { 293 put_unaligned(factory_dat.usb_vendor_id, &dev->idVendor); 294 put_unaligned(factory_dat.usb_product_id, &dev->idProduct); 295 g_dnl_set_serialnumber((char *)factory_dat.serial); 296 297 return 0; 298 } 299 300 int g_dnl_get_board_bcd_device_number(int gcnum) 301 { 302 return factory_dat.version; 303 } 304 #endif /* defined(CONFIG_SPL_BUILD) */ 305