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1 | /***********************license start*************** |
2 | * Author: Cavium Networks | |
3 | * | |
4 | * Contact: support@caviumnetworks.com | |
5 | * This file is part of the OCTEON SDK | |
6 | * | |
7 | * Copyright (c) 2003-2008 Cavium Networks | |
8 | * | |
9 | * This file is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License, Version 2, as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This file is distributed in the hope that it will be useful, but | |
14 | * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty | |
15 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or | |
16 | * NONINFRINGEMENT. See the GNU General Public License for more | |
17 | * details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this file; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | * or visit http://www.gnu.org/licenses/. | |
23 | * | |
24 | * This file may also be available under a different license from Cavium. | |
25 | * Contact Cavium Networks for more information | |
26 | ***********************license end**************************************/ | |
27 | ||
28 | /* | |
29 | * File defining functions for working with different Octeon | |
30 | * models. | |
31 | */ | |
32 | #include <asm/octeon/octeon.h> | |
33 | ||
34 | /** | |
35 | * Given the chip processor ID from COP0, this function returns a | |
36 | * string representing the chip model number. The string is of the | |
37 | * form CNXXXXpX.X-FREQ-SUFFIX. | |
38 | * - XXXX = The chip model number | |
39 | * - X.X = Chip pass number | |
40 | * - FREQ = Current frequency in Mhz | |
41 | * - SUFFIX = NSP, EXP, SCP, SSP, or CP | |
42 | * | |
43 | * @chip_id: Chip ID | |
44 | * | |
45 | * Returns Model string | |
46 | */ | |
47 | const char *octeon_model_get_string(uint32_t chip_id) | |
48 | { | |
49 | static char buffer[32]; | |
50 | return octeon_model_get_string_buffer(chip_id, buffer); | |
51 | } | |
52 | ||
53 | /* | |
54 | * Version of octeon_model_get_string() that takes buffer as argument, | |
55 | * as running early in u-boot static/global variables don't work when | |
56 | * running from flash. | |
57 | */ | |
58 | const char *octeon_model_get_string_buffer(uint32_t chip_id, char *buffer) | |
59 | { | |
60 | const char *family; | |
61 | const char *core_model; | |
62 | char pass[4]; | |
63 | int clock_mhz; | |
64 | const char *suffix; | |
65 | union cvmx_l2d_fus3 fus3; | |
66 | int num_cores; | |
67 | union cvmx_mio_fus_dat2 fus_dat2; | |
68 | union cvmx_mio_fus_dat3 fus_dat3; | |
69 | char fuse_model[10]; | |
70 | uint32_t fuse_data = 0; | |
71 | ||
72 | fus3.u64 = cvmx_read_csr(CVMX_L2D_FUS3); | |
73 | fus_dat2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2); | |
74 | fus_dat3.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT3); | |
75 | ||
76 | num_cores = cvmx_octeon_num_cores(); | |
77 | ||
25985edc | 78 | /* Make sure the non existent devices look disabled */ |
58f07778 DD |
79 | switch ((chip_id >> 8) & 0xff) { |
80 | case 6: /* CN50XX */ | |
81 | case 2: /* CN30XX */ | |
82 | fus_dat3.s.nodfa_dte = 1; | |
83 | fus_dat3.s.nozip = 1; | |
84 | break; | |
85 | case 4: /* CN57XX or CN56XX */ | |
86 | fus_dat3.s.nodfa_dte = 1; | |
87 | break; | |
88 | default: | |
89 | break; | |
90 | } | |
91 | ||
92 | /* Make a guess at the suffix */ | |
93 | /* NSP = everything */ | |
94 | /* EXP = No crypto */ | |
95 | /* SCP = No DFA, No zip */ | |
96 | /* CP = No DFA, No crypto, No zip */ | |
97 | if (fus_dat3.s.nodfa_dte) { | |
98 | if (fus_dat2.s.nocrypto) | |
99 | suffix = "CP"; | |
100 | else | |
101 | suffix = "SCP"; | |
102 | } else if (fus_dat2.s.nocrypto) | |
103 | suffix = "EXP"; | |
104 | else | |
105 | suffix = "NSP"; | |
106 | ||
107 | /* | |
108 | * Assume pass number is encoded using <5:3><2:0>. Exceptions | |
109 | * will be fixed later. | |
110 | */ | |
111 | sprintf(pass, "%u.%u", ((chip_id >> 3) & 7) + 1, chip_id & 7); | |
112 | ||
113 | /* | |
114 | * Use the number of cores to determine the last 2 digits of | |
115 | * the model number. There are some exceptions that are fixed | |
116 | * later. | |
117 | */ | |
118 | switch (num_cores) { | |
119 | case 16: | |
120 | core_model = "60"; | |
121 | break; | |
122 | case 15: | |
123 | core_model = "58"; | |
124 | break; | |
125 | case 14: | |
126 | core_model = "55"; | |
127 | break; | |
128 | case 13: | |
129 | core_model = "52"; | |
130 | break; | |
131 | case 12: | |
132 | core_model = "50"; | |
133 | break; | |
134 | case 11: | |
135 | core_model = "48"; | |
136 | break; | |
137 | case 10: | |
138 | core_model = "45"; | |
139 | break; | |
140 | case 9: | |
141 | core_model = "42"; | |
142 | break; | |
143 | case 8: | |
144 | core_model = "40"; | |
145 | break; | |
146 | case 7: | |
147 | core_model = "38"; | |
148 | break; | |
149 | case 6: | |
150 | core_model = "34"; | |
151 | break; | |
152 | case 5: | |
153 | core_model = "32"; | |
154 | break; | |
155 | case 4: | |
156 | core_model = "30"; | |
157 | break; | |
158 | case 3: | |
159 | core_model = "25"; | |
160 | break; | |
161 | case 2: | |
162 | core_model = "20"; | |
163 | break; | |
164 | case 1: | |
165 | core_model = "10"; | |
166 | break; | |
167 | default: | |
168 | core_model = "XX"; | |
169 | break; | |
170 | } | |
171 | ||
172 | /* Now figure out the family, the first two digits */ | |
173 | switch ((chip_id >> 8) & 0xff) { | |
174 | case 0: /* CN38XX, CN37XX or CN36XX */ | |
175 | if (fus3.cn38xx.crip_512k) { | |
176 | /* | |
177 | * For some unknown reason, the 16 core one is | |
178 | * called 37 instead of 36. | |
179 | */ | |
180 | if (num_cores >= 16) | |
181 | family = "37"; | |
182 | else | |
183 | family = "36"; | |
184 | } else | |
185 | family = "38"; | |
186 | /* | |
187 | * This series of chips didn't follow the standard | |
188 | * pass numbering. | |
189 | */ | |
190 | switch (chip_id & 0xf) { | |
191 | case 0: | |
192 | strcpy(pass, "1.X"); | |
193 | break; | |
194 | case 1: | |
195 | strcpy(pass, "2.X"); | |
196 | break; | |
197 | case 3: | |
198 | strcpy(pass, "3.X"); | |
199 | break; | |
200 | default: | |
201 | strcpy(pass, "X.X"); | |
202 | break; | |
203 | } | |
204 | break; | |
205 | case 1: /* CN31XX or CN3020 */ | |
206 | if ((chip_id & 0x10) || fus3.cn31xx.crip_128k) | |
207 | family = "30"; | |
208 | else | |
209 | family = "31"; | |
210 | /* | |
211 | * This series of chips didn't follow the standard | |
212 | * pass numbering. | |
213 | */ | |
214 | switch (chip_id & 0xf) { | |
215 | case 0: | |
216 | strcpy(pass, "1.0"); | |
217 | break; | |
218 | case 2: | |
219 | strcpy(pass, "1.1"); | |
220 | break; | |
221 | default: | |
222 | strcpy(pass, "X.X"); | |
223 | break; | |
224 | } | |
225 | break; | |
226 | case 2: /* CN3010 or CN3005 */ | |
227 | family = "30"; | |
228 | /* A chip with half cache is an 05 */ | |
229 | if (fus3.cn30xx.crip_64k) | |
230 | core_model = "05"; | |
231 | /* | |
232 | * This series of chips didn't follow the standard | |
233 | * pass numbering. | |
234 | */ | |
235 | switch (chip_id & 0xf) { | |
236 | case 0: | |
237 | strcpy(pass, "1.0"); | |
238 | break; | |
239 | case 2: | |
240 | strcpy(pass, "1.1"); | |
241 | break; | |
242 | default: | |
243 | strcpy(pass, "X.X"); | |
244 | break; | |
245 | } | |
246 | break; | |
247 | case 3: /* CN58XX */ | |
248 | family = "58"; | |
249 | /* Special case. 4 core, no crypto */ | |
250 | if ((num_cores == 4) && fus_dat2.cn38xx.nocrypto) | |
251 | core_model = "29"; | |
252 | ||
253 | /* Pass 1 uses different encodings for pass numbers */ | |
254 | if ((chip_id & 0xFF) < 0x8) { | |
255 | switch (chip_id & 0x3) { | |
256 | case 0: | |
257 | strcpy(pass, "1.0"); | |
258 | break; | |
259 | case 1: | |
260 | strcpy(pass, "1.1"); | |
261 | break; | |
262 | case 3: | |
263 | strcpy(pass, "1.2"); | |
264 | break; | |
265 | default: | |
266 | strcpy(pass, "1.X"); | |
267 | break; | |
268 | } | |
269 | } | |
270 | break; | |
271 | case 4: /* CN57XX, CN56XX, CN55XX, CN54XX */ | |
272 | if (fus_dat2.cn56xx.raid_en) { | |
273 | if (fus3.cn56xx.crip_1024k) | |
274 | family = "55"; | |
275 | else | |
276 | family = "57"; | |
277 | if (fus_dat2.cn56xx.nocrypto) | |
278 | suffix = "SP"; | |
279 | else | |
280 | suffix = "SSP"; | |
281 | } else { | |
282 | if (fus_dat2.cn56xx.nocrypto) | |
283 | suffix = "CP"; | |
284 | else { | |
285 | suffix = "NSP"; | |
286 | if (fus_dat3.s.nozip) | |
287 | suffix = "SCP"; | |
288 | } | |
289 | if (fus3.cn56xx.crip_1024k) | |
290 | family = "54"; | |
291 | else | |
292 | family = "56"; | |
293 | } | |
294 | break; | |
295 | case 6: /* CN50XX */ | |
296 | family = "50"; | |
297 | break; | |
298 | case 7: /* CN52XX */ | |
299 | if (fus3.cn52xx.crip_256k) | |
300 | family = "51"; | |
301 | else | |
302 | family = "52"; | |
303 | break; | |
304 | default: | |
305 | family = "XX"; | |
306 | core_model = "XX"; | |
307 | strcpy(pass, "X.X"); | |
308 | suffix = "XXX"; | |
309 | break; | |
310 | } | |
311 | ||
312 | clock_mhz = octeon_get_clock_rate() / 1000000; | |
313 | ||
314 | if (family[0] != '3') { | |
315 | /* Check for model in fuses, overrides normal decode */ | |
316 | /* This is _not_ valid for Octeon CN3XXX models */ | |
317 | fuse_data |= cvmx_fuse_read_byte(51); | |
318 | fuse_data = fuse_data << 8; | |
319 | fuse_data |= cvmx_fuse_read_byte(50); | |
320 | fuse_data = fuse_data << 8; | |
321 | fuse_data |= cvmx_fuse_read_byte(49); | |
322 | fuse_data = fuse_data << 8; | |
323 | fuse_data |= cvmx_fuse_read_byte(48); | |
324 | if (fuse_data & 0x7ffff) { | |
325 | int model = fuse_data & 0x3fff; | |
326 | int suffix = (fuse_data >> 14) & 0x1f; | |
327 | if (suffix && model) { | |
328 | /* | |
329 | * Have both number and suffix in | |
330 | * fuses, so both | |
331 | */ | |
332 | sprintf(fuse_model, "%d%c", | |
333 | model, 'A' + suffix - 1); | |
334 | core_model = ""; | |
335 | family = fuse_model; | |
336 | } else if (suffix && !model) { | |
337 | /* | |
338 | * Only have suffix, so add suffix to | |
339 | * 'normal' model number. | |
340 | */ | |
341 | sprintf(fuse_model, "%s%c", core_model, | |
342 | 'A' + suffix - 1); | |
343 | core_model = fuse_model; | |
344 | } else { | |
345 | /* | |
346 | * Don't have suffix, so just use | |
347 | * model from fuses. | |
348 | */ | |
349 | sprintf(fuse_model, "%d", model); | |
350 | core_model = ""; | |
351 | family = fuse_model; | |
352 | } | |
353 | } | |
354 | } | |
355 | sprintf(buffer, "CN%s%sp%s-%d-%s", | |
356 | family, core_model, pass, clock_mhz, suffix); | |
357 | return buffer; | |
358 | } |