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24#include <common.h>
25#include <hush.h>
26#include <i2c.h>
27#include "common.h"
28
29int ivm_calc_crc(unsigned char *buf, int len)
30{
31 const unsigned short crc_tab[16] = {
32 0x0000, 0xCC01, 0xD801, 0x1400,
33 0xF001, 0x3C00, 0x2800, 0xE401,
34 0xA001, 0x6C00, 0x7800, 0xB401,
35 0x5000, 0x9C01, 0x8801, 0x4400};
36
37 unsigned short crc = 0;
38 unsigned short r1 = 0;
39 unsigned char byte = 0;
40 int i;
41
42
43 for (i = 0; i < len; i++) {
44 byte = buf[i];
45
46
47 r1 = crc_tab[crc & 0xF];
48 crc = ((crc) >> 4) & 0x0FFF;
49 crc = crc ^ r1 ^ crc_tab[byte & 0xF];
50
51
52 r1 = crc_tab[crc & 0xF];
53 crc = (crc >> 4) & 0x0FFF;
54 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
55 }
56 return crc;
57}
58
59static int ivm_set_value(char *name, char *value)
60{
61 char tempbuf[256];
62
63 if (value != NULL) {
64 sprintf(tempbuf, "%s=%s", name, value);
65 return set_local_var(tempbuf, 0);
66 } else {
67 unset_local_var(name);
68 }
69 return 0;
70}
71
72static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
73 int check)
74{
75 unsigned short val;
76 unsigned char valbuf[30];
77
78 if ((buf[off + 0] != buf[off + 2]) &&
79 (buf[off + 2] != buf[off + 4])) {
80 printf("%s Error corrupted %s\n", __func__, name);
81 val = -1;
82 } else {
83 val = buf[off + 0] + (buf[off + 1] << 8);
84 if ((val == 0) && (check == 1))
85 val = -1;
86 }
87 sprintf((char *)valbuf, "%x", val);
88 ivm_set_value(name, (char *)valbuf);
89 return val;
90}
91
92#define INV_BLOCKSIZE 0x100
93#define INV_DATAADDRESS 0x21
94#define INVENTORYDATASIZE (INV_BLOCKSIZE - INV_DATAADDRESS - 3)
95
96#define IVM_POS_SHORT_TEXT 0
97#define IVM_POS_MANU_ID 1
98#define IVM_POS_MANU_SERIAL 2
99#define IVM_POS_PART_NUMBER 3
100#define IVM_POS_BUILD_STATE 4
101#define IVM_POS_SUPPLIER_PART_NUMBER 5
102#define IVM_POS_DELIVERY_DATE 6
103#define IVM_POS_SUPPLIER_BUILD_STATE 7
104#define IVM_POS_CUSTOMER_ID 8
105#define IVM_POS_CUSTOMER_PROD_ID 9
106#define IVM_POS_HISTORY 10
107#define IVM_POS_SYMBOL_ONLY 11
108
109static char convert_char(char c)
110{
111 return (c < ' ' || c > '~') ? '.' : c;
112}
113
114static int ivm_findinventorystring(int type,
115 unsigned char *const string,
116 unsigned long maxlen,
117 unsigned char *buf)
118{
119 int xcode = 0;
120 unsigned long cr = 0;
121 unsigned long addr = INV_DATAADDRESS;
122 unsigned long size = 0;
123 unsigned long nr = type;
124 int stop = 0;
125
126 memset(string, '\0', maxlen);
127 switch (type) {
128 case IVM_POS_SYMBOL_ONLY:
129 nr = 0;
130 stop = 1;
131 break;
132 default:
133 nr = type;
134 stop = 0;
135 }
136
137
138 while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
139 if ((buf[addr] == '\r'))
140 cr++;
141 addr++;
142 }
143
144
145
146
147
148 if (addr < INVENTORYDATASIZE) {
149
150 for (; (buf[addr] != '\r') &&
151 ((buf[addr] != ';') || (!stop)) &&
152 (size < (maxlen - 1) &&
153 (addr < INVENTORYDATASIZE)); addr++) {
154 size += sprintf((char *)string + size, "%c",
155 convert_char (buf[addr]));
156 }
157
158
159
160
161
162
163 if (addr == INVENTORYDATASIZE) {
164 xcode = -1;
165 printf("Error end of string not found\n");
166 } else if ((size > (maxlen - 1)) &&
167 (buf[addr] != '\r')) {
168 xcode = -1;
169 printf("string too long till next CR\n");
170 }
171 } else {
172
173
174
175
176 xcode = -1;
177 printf("not enough cr found\n");
178 }
179 return xcode;
180}
181
182#define GET_STRING(name, which, len) \
183 if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
184 ivm_set_value(name, (char *)valbuf); \
185 }
186
187static int ivm_check_crc(unsigned char *buf, int block)
188{
189 unsigned long crc;
190 unsigned long crceeprom;
191
192 crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
193 crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
194 buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
195 if (crc != crceeprom) {
196 if (block == 0)
197 printf("Error CRC Block: %d EEprom: calculated: \
198 %lx EEprom: %lx\n", block, crc, crceeprom);
199 return -1;
200 }
201 return 0;
202}
203
204static int ivm_analyze_block2(unsigned char *buf, int len)
205{
206 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
207 unsigned long count;
208
209
210 sprintf((char *)valbuf, "%pM", buf + 1);
211 ivm_set_value("IVM_MacAddress", (char *)valbuf);
212
213#if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
214 if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
215 unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
216
217 val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
218 buf[4] = (val >> 16) & 0xff;
219 buf[5] = (val >> 8) & 0xff;
220 buf[6] = val & 0xff;
221 sprintf((char *)valbuf, "%pM", buf + 1);
222 }
223#endif
224#ifdef MACH_TYPE_KM_KIRKWOOD
225 setenv((char *)"ethaddr", (char *)valbuf);
226#else
227 if (getenv("ethaddr") == NULL)
228 setenv((char *)"ethaddr", (char *)valbuf);
229#endif
230
231
232 count = (buf[10] << 24) +
233 (buf[11] << 16) +
234 (buf[12] << 8) +
235 buf[13];
236 if (count == 0xffffffff)
237 count = 1;
238 sprintf((char *)valbuf, "%lx", count);
239 ivm_set_value("IVM_MacCount", (char *)valbuf);
240 return 0;
241}
242
243int ivm_analyze_eeprom(unsigned char *buf, int len)
244{
245 unsigned short val;
246 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
247 unsigned char *tmp;
248
249 if (ivm_check_crc(buf, 0) != 0)
250 return -1;
251
252 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
253 "IVM_BoardId", 0, 1);
254 val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
255 "IVM_HWKey", 6, 1);
256 if (val != 0xffff) {
257 sprintf((char *)valbuf, "%x", ((val / 100) % 10));
258 ivm_set_value("IVM_HWVariant", (char *)valbuf);
259 sprintf((char *)valbuf, "%x", (val % 100));
260 ivm_set_value("IVM_HWVersion", (char *)valbuf);
261 }
262 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
263 "IVM_Functions", 12, 0);
264
265 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
266 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
267 tmp = (unsigned char *) getenv("IVM_DeviceName");
268 if (tmp) {
269 int len = strlen((char *)tmp);
270 int i = 0;
271
272 while (i < len) {
273 if (tmp[i] == ';') {
274 ivm_set_value("IVM_ShortText",
275 (char *)&tmp[i + 1]);
276 break;
277 }
278 i++;
279 }
280 if (i >= len)
281 ivm_set_value("IVM_ShortText", NULL);
282 } else {
283 ivm_set_value("IVM_ShortText", NULL);
284 }
285 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
286 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
287 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
288 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
289 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
290 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
291 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
292 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
293 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
294
295 if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
296 return 0;
297 ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
298 CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
299
300 return 0;
301}
302
303int ivm_read_eeprom(void)
304{
305#if defined(CONFIG_I2C_MUX)
306 I2C_MUX_DEVICE *dev = NULL;
307#endif
308 uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
309 uchar *buf;
310 unsigned long dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
311 int ret;
312
313#if defined(CONFIG_I2C_MUX)
314
315#if defined(CONFIG_SYS_I2C_IVM_BUS)
316 dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
317#else
318 buf = (unsigned char *) getenv("EEprom_ivm");
319 if (buf != NULL)
320 dev = i2c_mux_ident_muxstring(buf);
321#endif
322 if (dev == NULL) {
323 printf("Error couldnt add Bus for IVM\n");
324 return -1;
325 }
326 i2c_set_bus_num(dev->busid);
327#endif
328
329 buf = (unsigned char *) getenv("EEprom_ivm_addr");
330 if (buf != NULL) {
331 ret = strict_strtoul((char *)buf, 16, &dev_addr);
332 if (ret != 0)
333 return -3;
334 }
335
336
337 i2c_make_abort();
338
339 ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
340 CONFIG_SYS_IVM_EEPROM_MAX_LEN);
341 if (ret != 0) {
342 printf("Error reading EEprom\n");
343 return -2;
344 }
345
346 return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
347}
348
