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8#include <common.h>
9#include <cli_hush.h>
10#include <i2c.h>
11#include "common.h"
12
13#define MAC_STR_SZ 20
14
15static int ivm_calc_crc(unsigned char *buf, int len)
16{
17 const unsigned short crc_tab[16] = {
18 0x0000, 0xCC01, 0xD801, 0x1400,
19 0xF001, 0x3C00, 0x2800, 0xE401,
20 0xA001, 0x6C00, 0x7800, 0xB401,
21 0x5000, 0x9C01, 0x8801, 0x4400};
22
23 unsigned short crc = 0;
24 unsigned short r1 = 0;
25 unsigned char byte = 0;
26 int i;
27
28
29 for (i = 0; i < len; i++) {
30 byte = buf[i];
31
32
33 r1 = crc_tab[crc & 0xF];
34 crc = ((crc) >> 4) & 0x0FFF;
35 crc = crc ^ r1 ^ crc_tab[byte & 0xF];
36
37
38 r1 = crc_tab[crc & 0xF];
39 crc = (crc >> 4) & 0x0FFF;
40 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
41 }
42 return crc;
43}
44
45static int ivm_set_value(char *name, char *value)
46{
47 char tempbuf[256];
48
49 if (value != NULL) {
50 sprintf(tempbuf, "%s=%s", name, value);
51 return set_local_var(tempbuf, 0);
52 } else {
53 unset_local_var(name);
54 }
55 return 0;
56}
57
58static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
59 int check)
60{
61 unsigned short val;
62 unsigned char valbuf[30];
63
64 if ((buf[off + 0] != buf[off + 2]) &&
65 (buf[off + 2] != buf[off + 4])) {
66 printf("%s Error corrupted %s\n", __func__, name);
67 val = -1;
68 } else {
69 val = buf[off + 0] + (buf[off + 1] << 8);
70 if ((val == 0) && (check == 1))
71 val = -1;
72 }
73 sprintf((char *)valbuf, "%x", val);
74 ivm_set_value(name, (char *)valbuf);
75 return val;
76}
77
78#define INV_BLOCKSIZE 0x100
79#define INV_DATAADDRESS 0x21
80#define INVENTORYDATASIZE (INV_BLOCKSIZE - INV_DATAADDRESS - 3)
81
82#define IVM_POS_SHORT_TEXT 0
83#define IVM_POS_MANU_ID 1
84#define IVM_POS_MANU_SERIAL 2
85#define IVM_POS_PART_NUMBER 3
86#define IVM_POS_BUILD_STATE 4
87#define IVM_POS_SUPPLIER_PART_NUMBER 5
88#define IVM_POS_DELIVERY_DATE 6
89#define IVM_POS_SUPPLIER_BUILD_STATE 7
90#define IVM_POS_CUSTOMER_ID 8
91#define IVM_POS_CUSTOMER_PROD_ID 9
92#define IVM_POS_HISTORY 10
93#define IVM_POS_SYMBOL_ONLY 11
94
95static char convert_char(char c)
96{
97 return (c < ' ' || c > '~') ? '.' : c;
98}
99
100static int ivm_findinventorystring(int type,
101 unsigned char *const string,
102 unsigned long maxlen,
103 unsigned char *buf)
104{
105 int xcode = 0;
106 unsigned long cr = 0;
107 unsigned long addr = INV_DATAADDRESS;
108 unsigned long size = 0;
109 unsigned long nr = type;
110 int stop = 0;
111
112 memset(string, '\0', maxlen);
113 switch (type) {
114 case IVM_POS_SYMBOL_ONLY:
115 nr = 0;
116 stop = 1;
117 break;
118 default:
119 nr = type;
120 stop = 0;
121 }
122
123
124 while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
125 if (buf[addr] == '\r')
126 cr++;
127 addr++;
128 }
129
130
131
132
133
134 if (addr < INVENTORYDATASIZE) {
135
136 for (; (buf[addr] != '\r') &&
137 ((buf[addr] != ';') || (!stop)) &&
138 (size < (maxlen - 1) &&
139 (addr < INVENTORYDATASIZE)); addr++) {
140 size += sprintf((char *)string + size, "%c",
141 convert_char (buf[addr]));
142 }
143
144
145
146
147
148
149 if (addr == INVENTORYDATASIZE) {
150 xcode = -1;
151 printf("Error end of string not found\n");
152 } else if ((size > (maxlen - 1)) &&
153 (buf[addr] != '\r')) {
154 xcode = -1;
155 printf("string too long till next CR\n");
156 }
157 } else {
158
159
160
161
162 xcode = -1;
163 printf("not enough cr found\n");
164 }
165 return xcode;
166}
167
168#define GET_STRING(name, which, len) \
169 if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
170 ivm_set_value(name, (char *)valbuf); \
171 }
172
173static int ivm_check_crc(unsigned char *buf, int block)
174{
175 unsigned long crc;
176 unsigned long crceeprom;
177
178 crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
179 crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
180 buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
181 if (crc != crceeprom) {
182 if (block == 0)
183 printf("Error CRC Block: %d EEprom: calculated: \
184 %lx EEprom: %lx\n", block, crc, crceeprom);
185 return -1;
186 }
187 return 0;
188}
189
190
191static int process_mac(unsigned char *valbuf, unsigned char *buf,
192 int offset)
193{
194 unsigned char mac[6];
195 unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
196
197
198
199
200 memcpy(mac, buf+1, 6);
201
202 if (offset) {
203 val += offset;
204 mac[3] = (val >> 16) & 0xff;
205 mac[4] = (val >> 8) & 0xff;
206 mac[5] = val & 0xff;
207 }
208
209 sprintf((char *)valbuf, "%pM", mac);
210 return 0;
211}
212
213static int ivm_analyze_block2(unsigned char *buf, int len)
214{
215 unsigned char valbuf[MAC_STR_SZ];
216 unsigned long count;
217
218
219 sprintf((char *)valbuf, "%pM", buf + 1);
220 ivm_set_value("IVM_MacAddress", (char *)valbuf);
221
222 count = (buf[10] << 24) +
223 (buf[11] << 16) +
224 (buf[12] << 8) +
225 buf[13];
226 if (count == 0xffffffff)
227 count = 1;
228 sprintf((char *)valbuf, "%lx", count);
229 ivm_set_value("IVM_MacCount", (char *)valbuf);
230 return 0;
231}
232
233int ivm_analyze_eeprom(unsigned char *buf, int len)
234{
235 unsigned short val;
236 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
237 unsigned char *tmp;
238
239 if (ivm_check_crc(buf, 0) != 0)
240 return -1;
241
242 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
243 "IVM_BoardId", 0, 1);
244 val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
245 "IVM_HWKey", 6, 1);
246 if (val != 0xffff) {
247 sprintf((char *)valbuf, "%x", ((val / 100) % 10));
248 ivm_set_value("IVM_HWVariant", (char *)valbuf);
249 sprintf((char *)valbuf, "%x", (val % 100));
250 ivm_set_value("IVM_HWVersion", (char *)valbuf);
251 }
252 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
253 "IVM_Functions", 12, 0);
254
255 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
256 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
257 tmp = (unsigned char *) getenv("IVM_DeviceName");
258 if (tmp) {
259 int len = strlen((char *)tmp);
260 int i = 0;
261
262 while (i < len) {
263 if (tmp[i] == ';') {
264 ivm_set_value("IVM_ShortText",
265 (char *)&tmp[i + 1]);
266 break;
267 }
268 i++;
269 }
270 if (i >= len)
271 ivm_set_value("IVM_ShortText", NULL);
272 } else {
273 ivm_set_value("IVM_ShortText", NULL);
274 }
275 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
276 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
277 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
278 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
279 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
280 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
281 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
282 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
283 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
284
285 if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
286 return 0;
287 ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
288 CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
289
290 return 0;
291}
292
293static int ivm_populate_env(unsigned char *buf, int len)
294{
295 unsigned char *page2;
296 unsigned char valbuf[MAC_STR_SZ];
297
298
299 if (ivm_check_crc(buf, 2))
300 return 0;
301 page2 = &buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN*2];
302
303
304 process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET);
305 if (getenv("ethaddr") == NULL)
306 setenv((char *)"ethaddr", (char *)valbuf);
307#ifdef CONFIG_KMVECT1
308
309 if (getenv("eth1addr") == NULL) {
310 process_mac(valbuf, page2, 1);
311 setenv((char *)"eth1addr", (char *)valbuf);
312 }
313#endif
314
315 return 0;
316}
317
318int ivm_read_eeprom(unsigned char *buf, int len)
319{
320 int ret;
321
322 i2c_set_bus_num(CONFIG_KM_IVM_BUS);
323
324 i2c_make_abort();
325
326 ret = i2c_read(CONFIG_SYS_IVM_EEPROM_ADR, 0, 1, buf, len);
327 if (ret != 0) {
328 printf("Error reading EEprom\n");
329 return -2;
330 }
331
332 return ivm_populate_env(buf, len);
333}
334
