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c609719b WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
c609719b WD |
6 | */ |
7 | ||
8 | #if defined(VXWORKS) | |
1da8dba9 WD |
9 | #include <stdio.h> |
10 | #include <string.h> | |
11 | #define CONFIG_SYS_DEF_EEPROM_ADDR 0xa0 | |
12 | extern char iicReadByte(char, char); | |
13 | extern ulong_t crc32(unsigned char *, unsigned long); | |
c609719b WD |
14 | #else |
15 | #include <common.h> | |
16 | #endif | |
17 | ||
18 | #include "vpd.h" | |
19 | ||
20 | /* | |
21 | * vpd_reader() - reads VPD data from I2C EEPROMS. | |
22 | * returns pointer to buffer or NULL. | |
23 | */ | |
1da8dba9 WD |
24 | static unsigned char *vpd_reader(unsigned char *buf, unsigned dev_addr, |
25 | unsigned off, unsigned count) | |
c609719b | 26 | { |
1da8dba9 | 27 | unsigned offset = off; /* Calculated offset */ |
c609719b | 28 | |
1da8dba9 WD |
29 | /* |
30 | * The main board EEPROM contains | |
31 | * SDRAM SPD in the first 128 bytes, | |
32 | * so skew the offset. | |
33 | */ | |
34 | if (dev_addr == CONFIG_SYS_DEF_EEPROM_ADDR) | |
35 | offset += SDRAM_SPD_DATA_SIZE; | |
c609719b | 36 | |
1da8dba9 | 37 | /* Try to read the I2C EEPROM */ |
c609719b | 38 | #if defined(VXWORKS) |
1da8dba9 WD |
39 | { |
40 | int i; | |
41 | ||
42 | for (i = 0; i < count; ++i) | |
43 | buf[i] = iicReadByte(dev_addr, offset + i); | |
c609719b | 44 | } |
c609719b | 45 | #else |
1da8dba9 WD |
46 | if (eeprom_read(dev_addr, offset, buf, count)) { |
47 | printf("Failed to read %d bytes from VPD EEPROM 0x%x @ 0x%x\n", | |
48 | count, dev_addr, offset); | |
49 | return NULL; | |
50 | } | |
c609719b WD |
51 | #endif |
52 | ||
1da8dba9 WD |
53 | return buf; |
54 | } | |
c609719b WD |
55 | |
56 | ||
57 | /* | |
58 | * vpd_get_packet() - returns next VPD packet or NULL. | |
59 | */ | |
1da8dba9 | 60 | static vpd_packet_t *vpd_get_packet(vpd_packet_t * vpd_packet) |
c609719b | 61 | { |
1da8dba9 WD |
62 | vpd_packet_t *packet = vpd_packet; |
63 | ||
64 | if (packet != NULL) { | |
65 | if (packet->identifier == VPD_PID_TERM) | |
66 | return NULL; | |
67 | else | |
68 | packet = (vpd_packet_t *) ((char *) packet + | |
69 | packet->size + 2); | |
70 | } | |
c609719b | 71 | |
1da8dba9 WD |
72 | return packet; |
73 | } | |
c609719b WD |
74 | |
75 | ||
76 | /* | |
77 | * vpd_find_packet() - Locates and returns the specified | |
78 | * VPD packet or NULL on error. | |
79 | */ | |
1da8dba9 | 80 | static vpd_packet_t *vpd_find_packet(vpd_t * vpd, unsigned char ident) |
c609719b | 81 | { |
1da8dba9 | 82 | vpd_packet_t *packet = (vpd_packet_t *) &vpd->packets; |
c609719b | 83 | |
1da8dba9 WD |
84 | /* Guaranteed illegal */ |
85 | if (ident == VPD_PID_GI) | |
86 | return NULL; | |
c609719b | 87 | |
1da8dba9 WD |
88 | /* Scan tuples looking for a match */ |
89 | while ((packet->identifier != ident) && | |
90 | (packet->identifier != VPD_PID_TERM)) | |
91 | packet = vpd_get_packet(packet); | |
c609719b | 92 | |
1da8dba9 WD |
93 | /* Did we find it? */ |
94 | if ((packet->identifier) && (packet->identifier != ident)) | |
95 | return NULL; | |
96 | return packet; | |
c609719b WD |
97 | } |
98 | ||
99 | ||
100 | /* | |
101 | * vpd_is_valid() - Validates contents of VPD data | |
102 | * in I2C EEPROM. Returns 1 for | |
103 | * success or 0 for failure. | |
104 | */ | |
105 | static int vpd_is_valid(unsigned dev_addr, unsigned char *buf) | |
106 | { | |
1da8dba9 WD |
107 | unsigned num_bytes; |
108 | vpd_packet_t *packet; | |
109 | vpd_t *vpd = (vpd_t *) buf; | |
110 | unsigned short stored_crc16, calc_crc16 = 0xffff; | |
111 | ||
112 | /* Check Eyecatcher */ | |
113 | if (strncmp | |
114 | ((char *) (vpd->header.eyecatcher), VPD_EYECATCHER, | |
115 | VPD_EYE_SIZE) != 0) { | |
116 | unsigned offset = 0; | |
117 | ||
118 | if (dev_addr == CONFIG_SYS_DEF_EEPROM_ADDR) | |
119 | offset += SDRAM_SPD_DATA_SIZE; | |
120 | printf("Error: VPD EEPROM 0x%x corrupt @ 0x%x\n", dev_addr, | |
121 | offset); | |
122 | ||
123 | return 0; | |
124 | } | |
c609719b | 125 | |
1da8dba9 WD |
126 | /* Check Length */ |
127 | if (vpd->header.size > VPD_MAX_EEPROM_SIZE) { | |
128 | printf("Error: VPD EEPROM 0x%x contains bad size 0x%x\n", | |
129 | dev_addr, vpd->header.size); | |
130 | return 0; | |
131 | } | |
c609719b | 132 | |
1da8dba9 WD |
133 | /* Now find the termination packet */ |
134 | packet = vpd_find_packet(vpd, VPD_PID_TERM); | |
135 | if (packet == NULL) { | |
136 | printf("Error: VPD EEPROM 0x%x missing termination packet\n", | |
137 | dev_addr); | |
138 | return 0; | |
139 | } | |
c609719b | 140 | |
1da8dba9 WD |
141 | /* Calculate data size */ |
142 | num_bytes = (unsigned long) ((unsigned char *) packet - | |
143 | (unsigned char *) vpd + | |
144 | sizeof(vpd_packet_t)); | |
c609719b | 145 | |
1da8dba9 WD |
146 | /* Find stored CRC and clear it */ |
147 | packet = vpd_find_packet(vpd, VPD_PID_CRC); | |
148 | if (packet == NULL) { | |
149 | printf("Error: VPD EEPROM 0x%x missing CRC\n", dev_addr); | |
150 | return 0; | |
151 | } | |
3073abdd WD |
152 | memcpy(&stored_crc16, packet->data, sizeof(ushort)); |
153 | memset(packet->data, 0, sizeof(ushort)); | |
c609719b | 154 | |
1da8dba9 | 155 | /* OK, lets calculate the CRC and check it */ |
c609719b | 156 | #if defined(VXWORKS) |
1da8dba9 | 157 | calc_crc16 = (0xffff & crc32(buf, num_bytes)); |
c609719b | 158 | #else |
1da8dba9 | 159 | calc_crc16 = (0xffff & crc32(0, buf, num_bytes)); |
c609719b | 160 | #endif |
1da8dba9 | 161 | /* Now restore the CRC */ |
3073abdd | 162 | memcpy(packet->data, &stored_crc16, sizeof(ushort)); |
1da8dba9 WD |
163 | if (stored_crc16 != calc_crc16) { |
164 | printf("Error: VPD EEPROM 0x%x has bad CRC 0x%x\n", | |
165 | dev_addr, stored_crc16); | |
166 | return 0; | |
167 | } | |
c609719b | 168 | |
1da8dba9 WD |
169 | return 1; |
170 | } | |
c609719b WD |
171 | |
172 | ||
173 | /* | |
174 | * size_ok() - Check to see if packet size matches | |
175 | * size of data we want. Returns 1 for | |
176 | * good match or 0 for failure. | |
177 | */ | |
178 | static int size_ok(vpd_packet_t *packet, unsigned long size) | |
179 | { | |
1da8dba9 WD |
180 | if (packet->size != size) { |
181 | printf("VPD Packet 0x%x corrupt.\n", packet->identifier); | |
182 | return 0; | |
183 | } | |
184 | return 1; | |
185 | } | |
c609719b WD |
186 | |
187 | ||
188 | /* | |
189 | * strlen_ok() - Check to see if packet size matches | |
190 | * strlen of the string we want to populate. | |
191 | * Returns 1 for valid length or 0 for failure. | |
192 | */ | |
193 | static int strlen_ok(vpd_packet_t *packet, unsigned long length) | |
194 | { | |
1da8dba9 WD |
195 | if (packet->size >= length) { |
196 | printf("VPD Packet 0x%x corrupt.\n", packet->identifier); | |
197 | return 0; | |
198 | } | |
199 | return 1; | |
200 | } | |
c609719b WD |
201 | |
202 | ||
203 | /* | |
204 | * get_vpd_data() - populates the passed VPD structure 'vpdInfo' | |
205 | * with data obtained from the specified | |
206 | * I2C EEPROM 'dev_addr'. Returns 0 for | |
207 | * success or 1 for failure. | |
208 | */ | |
209 | int vpd_get_data(unsigned char dev_addr, VPD *vpdInfo) | |
210 | { | |
1da8dba9 WD |
211 | unsigned char buf[VPD_EEPROM_SIZE]; |
212 | vpd_t *vpd = (vpd_t *) buf; | |
213 | vpd_packet_t *packet; | |
214 | ||
215 | if (vpdInfo == NULL) | |
216 | return 1; | |
217 | ||
218 | /* | |
219 | * Fill vpdInfo with 0s to blank out | |
220 | * unused fields, fill vpdInfo->ethAddrs | |
221 | * with all 0xffs so that other's code can | |
222 | * determine how many real Ethernet addresses | |
223 | * there are. OUIs starting with 0xff are | |
224 | * broadcast addresses, and would never be | |
225 | * permantely stored. | |
226 | */ | |
227 | memset((void *) vpdInfo, 0, sizeof(VPD)); | |
228 | memset((void *) &vpdInfo->ethAddrs, 0xff, sizeof(vpdInfo->ethAddrs)); | |
229 | vpdInfo->_devAddr = dev_addr; | |
230 | ||
231 | /* Read the minimum size first */ | |
232 | if (vpd_reader(buf, dev_addr, 0, VPD_EEPROM_SIZE) == NULL) | |
233 | return 1; | |
234 | ||
235 | /* Check validity of VPD data */ | |
236 | if (!vpd_is_valid(dev_addr, buf)) { | |
237 | printf("VPD Data is INVALID!\n"); | |
238 | return 1; | |
239 | } | |
c609719b | 240 | |
1da8dba9 WD |
241 | /* |
242 | * Walk all the packets and populate | |
243 | * the VPD info structure. | |
244 | */ | |
245 | packet = (vpd_packet_t *) &vpd->packets; | |
246 | do { | |
247 | switch (packet->identifier) { | |
248 | case VPD_PID_GI: | |
249 | printf("Error: Illegal VPD value\n"); | |
250 | break; | |
251 | case VPD_PID_PID: | |
252 | if (strlen_ok(packet, MAX_PROD_ID)) { | |
253 | strncpy(vpdInfo->productId, | |
254 | (char *) (packet->data), | |
255 | packet->size); | |
256 | } | |
257 | break; | |
258 | case VPD_PID_REV: | |
259 | if (size_ok(packet, sizeof(char))) | |
260 | vpdInfo->revisionId = *packet->data; | |
261 | break; | |
262 | case VPD_PID_SN: | |
263 | if (size_ok(packet, sizeof(unsigned long))) { | |
3073abdd WD |
264 | memcpy(&vpdInfo->serialNum, |
265 | packet->data, | |
266 | sizeof(unsigned long)); | |
1da8dba9 WD |
267 | } |
268 | break; | |
269 | case VPD_PID_MANID: | |
270 | if (size_ok(packet, sizeof(unsigned char))) | |
271 | vpdInfo->manuID = *packet->data; | |
272 | break; | |
273 | case VPD_PID_PCO: | |
274 | if (size_ok(packet, sizeof(unsigned long))) { | |
3073abdd WD |
275 | memcpy(&vpdInfo->configOpt, |
276 | packet->data, | |
277 | sizeof(unsigned long)); | |
1da8dba9 WD |
278 | } |
279 | break; | |
280 | case VPD_PID_SYSCLK: | |
281 | if (size_ok(packet, sizeof(unsigned long))) | |
3073abdd WD |
282 | memcpy(&vpdInfo->sysClk, |
283 | packet->data, | |
284 | sizeof(unsigned long)); | |
1da8dba9 WD |
285 | break; |
286 | case VPD_PID_SERCLK: | |
287 | if (size_ok(packet, sizeof(unsigned long))) | |
3073abdd WD |
288 | memcpy(&vpdInfo->serClk, |
289 | packet->data, | |
290 | sizeof(unsigned long)); | |
1da8dba9 WD |
291 | break; |
292 | case VPD_PID_FLASH: | |
293 | if (size_ok(packet, 9)) { /* XXX - hardcoded, | |
294 | padding in struct */ | |
295 | memcpy(&vpdInfo->flashCfg, packet->data, 9); | |
296 | } | |
297 | break; | |
298 | case VPD_PID_ETHADDR: | |
299 | memcpy(vpdInfo->ethAddrs, packet->data, packet->size); | |
300 | break; | |
301 | case VPD_PID_POTS: | |
302 | if (size_ok(packet, sizeof(char))) | |
303 | vpdInfo->numPOTS = (unsigned) *packet->data; | |
304 | break; | |
305 | case VPD_PID_DS1: | |
306 | if (size_ok(packet, sizeof(char))) | |
307 | vpdInfo->numDS1 = (unsigned) *packet->data; | |
308 | case VPD_PID_GAL: | |
309 | case VPD_PID_CRC: | |
310 | case VPD_PID_TERM: | |
311 | break; | |
312 | default: | |
313 | printf("Warning: Found unknown VPD packet ID 0x%x\n", | |
314 | packet->identifier); | |
315 | break; | |
c609719b | 316 | } |
1da8dba9 | 317 | } while ((packet = vpd_get_packet(packet))); |
c609719b | 318 | |
1da8dba9 WD |
319 | return 0; |
320 | } | |
c609719b WD |
321 | |
322 | ||
323 | /* | |
324 | * vpd_init() - Initialize default VPD environment | |
325 | */ | |
326 | int vpd_init(unsigned char dev_addr) | |
327 | { | |
1da8dba9 WD |
328 | return 0; |
329 | } | |
c609719b WD |
330 | |
331 | ||
332 | /* | |
333 | * vpd_print() - Pretty print the VPD data. | |
334 | */ | |
335 | void vpd_print(VPD *vpdInfo) | |
336 | { | |
1da8dba9 WD |
337 | const char *const sp = ""; |
338 | const char *const sfmt = "%4s%-20s: \"%s\"\n"; | |
339 | const char *const cfmt = "%4s%-20s: '%c'\n"; | |
340 | const char *const dfmt = "%4s%-20s: %ld\n"; | |
341 | const char *const hfmt = "%4s%-20s: %08lX\n"; | |
342 | const char *const dsfmt = "%4s%-20s: %d\n"; | |
343 | const char *const hsfmt = "%4s%-20s: %04X\n"; | |
344 | const char *const dhfmt = "%4s%-20s: %ld (%lX)\n"; | |
345 | ||
346 | printf("VPD read from I2C device: %02X\n", vpdInfo->_devAddr); | |
347 | ||
348 | if (vpdInfo->productId[0]) | |
349 | printf(sfmt, sp, "Product ID", vpdInfo->productId); | |
350 | else | |
351 | printf(sfmt, sp, "Product ID", "UNKNOWN"); | |
352 | ||
353 | if (vpdInfo->revisionId) | |
354 | printf(cfmt, sp, "Revision ID", vpdInfo->revisionId); | |
355 | ||
356 | if (vpdInfo->serialNum) | |
357 | printf(dfmt, sp, "Serial Number", vpdInfo->serialNum); | |
358 | ||
359 | if (vpdInfo->manuID) | |
360 | printf(dfmt, sp, "Manufacture ID", (long) vpdInfo->manuID); | |
361 | ||
362 | if (vpdInfo->configOpt) | |
363 | printf(hfmt, sp, "Configuration", vpdInfo->configOpt); | |
364 | ||
365 | if (vpdInfo->sysClk) | |
366 | printf(dhfmt, sp, "System Clock", vpdInfo->sysClk, | |
367 | vpdInfo->sysClk); | |
368 | ||
369 | if (vpdInfo->serClk) | |
370 | printf(dhfmt, sp, "Serial Clock", vpdInfo->serClk, | |
371 | vpdInfo->serClk); | |
372 | ||
373 | if (vpdInfo->numPOTS) | |
374 | printf(dfmt, sp, "Number of POTS lines", vpdInfo->numPOTS); | |
375 | ||
376 | if (vpdInfo->numDS1) | |
377 | printf(dfmt, sp, "Number of DS1s", vpdInfo->numDS1); | |
378 | ||
379 | /* Print Ethernet Addresses */ | |
380 | if (vpdInfo->ethAddrs[0][0] != 0xff) { | |
381 | int i, j; | |
382 | ||
383 | printf("%4sEtherNet Address(es): ", sp); | |
384 | for (i = 0; i < MAX_ETH_ADDRS; i++) { | |
385 | if (vpdInfo->ethAddrs[i][0] != 0xff) { | |
386 | for (j = 0; j < 6; j++) { | |
387 | printf("%02X", | |
388 | vpdInfo->ethAddrs[i][j]); | |
389 | if (((j + 1) % 6) != 0) | |
390 | printf(":"); | |
391 | else | |
392 | printf(" "); | |
393 | } | |
394 | if (((i + 1) % 3) == 0) | |
395 | printf("\n%24s: ", sp); | |
396 | } | |
c609719b | 397 | } |
1da8dba9 | 398 | printf("\n"); |
c609719b | 399 | } |
1da8dba9 WD |
400 | |
401 | if (vpdInfo->flashCfg.mfg && vpdInfo->flashCfg.dev) { | |
402 | printf("Main Flash Configuration:\n"); | |
403 | printf(hsfmt, sp, "Manufacture ID", vpdInfo->flashCfg.mfg); | |
404 | printf(hsfmt, sp, "Device ID", vpdInfo->flashCfg.dev); | |
405 | printf(dsfmt, sp, "Device Width", vpdInfo->flashCfg.devWidth); | |
406 | printf(dsfmt, sp, "Num. Devices", vpdInfo->flashCfg.numDevs); | |
407 | printf(dsfmt, sp, "Num. Columns", vpdInfo->flashCfg.numCols); | |
408 | printf(dsfmt, sp, "Column Width", vpdInfo->flashCfg.colWidth); | |
409 | printf(dsfmt, sp, "WE Data Width", | |
410 | vpdInfo->flashCfg.weDataWidth); | |
411 | } | |
412 | } |