Commit | Line | Data |
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1dbae815 TL |
1 | /* |
2 | * linux/arch/arm/mach-omap2/id.c | |
3 | * | |
4 | * OMAP2 CPU identification code | |
5 | * | |
6 | * Copyright (C) 2005 Nokia Corporation | |
7 | * Written by Tony Lindgren <tony@atomide.com> | |
8 | * | |
44169075 SS |
9 | * Copyright (C) 2009 Texas Instruments |
10 | * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> | |
11 | * | |
1dbae815 TL |
12 | * This program is free software; you can redistribute it and/or modify |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | */ | |
16 | ||
1dbae815 TL |
17 | #include <linux/module.h> |
18 | #include <linux/kernel.h> | |
19 | #include <linux/init.h> | |
fced80c7 | 20 | #include <linux/io.h> |
1dbae815 | 21 | |
0ba8b9b2 | 22 | #include <asm/cputype.h> |
1dbae815 | 23 | |
ce491cf8 | 24 | #include <plat/common.h> |
ce491cf8 | 25 | #include <plat/cpu.h> |
72d0f1c3 | 26 | |
2e130fc3 KRC |
27 | #include <mach/id.h> |
28 | ||
4814ced5 PW |
29 | #include "control.h" |
30 | ||
097c584c | 31 | static struct omap_chip_id omap_chip; |
84a34344 LL |
32 | static unsigned int omap_revision; |
33 | ||
8384ce07 | 34 | u32 omap3_features; |
84a34344 LL |
35 | |
36 | unsigned int omap_rev(void) | |
37 | { | |
38 | return omap_revision; | |
39 | } | |
40 | EXPORT_SYMBOL(omap_rev); | |
097c584c PW |
41 | |
42 | /** | |
43 | * omap_chip_is - test whether currently running OMAP matches a chip type | |
44 | * @oc: omap_chip_t to test against | |
45 | * | |
46 | * Test whether the currently-running OMAP chip matches the supplied | |
47 | * chip type 'oc'. Returns 1 upon a match; 0 upon failure. | |
48 | */ | |
49 | int omap_chip_is(struct omap_chip_id oci) | |
50 | { | |
51 | return (oci.oc & omap_chip.oc) ? 1 : 0; | |
52 | } | |
53 | EXPORT_SYMBOL(omap_chip_is); | |
54 | ||
8e25ad96 KH |
55 | int omap_type(void) |
56 | { | |
57 | u32 val = 0; | |
58 | ||
edeae658 | 59 | if (cpu_is_omap24xx()) { |
8e25ad96 | 60 | val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS); |
edeae658 | 61 | } else if (cpu_is_omap34xx()) { |
8e25ad96 | 62 | val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS); |
737daa03 | 63 | } else if (cpu_is_omap44xx()) { |
dcf5ef3f | 64 | val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS); |
edeae658 | 65 | } else { |
8e25ad96 KH |
66 | pr_err("Cannot detect omap type!\n"); |
67 | goto out; | |
68 | } | |
69 | ||
70 | val &= OMAP2_DEVICETYPE_MASK; | |
71 | val >>= 8; | |
72 | ||
73 | out: | |
74 | return val; | |
75 | } | |
76 | EXPORT_SYMBOL(omap_type); | |
77 | ||
78 | ||
a8823143 | 79 | /*----------------------------------------------------------------------------*/ |
097c584c | 80 | |
a8823143 TL |
81 | #define OMAP_TAP_IDCODE 0x0204 |
82 | #define OMAP_TAP_DIE_ID_0 0x0218 | |
83 | #define OMAP_TAP_DIE_ID_1 0x021C | |
84 | #define OMAP_TAP_DIE_ID_2 0x0220 | |
85 | #define OMAP_TAP_DIE_ID_3 0x0224 | |
097c584c | 86 | |
a8823143 | 87 | #define read_tap_reg(reg) __raw_readl(tap_base + (reg)) |
097c584c | 88 | |
a8823143 TL |
89 | struct omap_id { |
90 | u16 hawkeye; /* Silicon type (Hawkeye id) */ | |
91 | u8 dev; /* Device type from production_id reg */ | |
84a34344 | 92 | u32 type; /* Combined type id copied to omap_revision */ |
a8823143 | 93 | }; |
097c584c | 94 | |
a8823143 TL |
95 | /* Register values to detect the OMAP version */ |
96 | static struct omap_id omap_ids[] __initdata = { | |
97 | { .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200024 }, | |
98 | { .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201024 }, | |
99 | { .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202024 }, | |
100 | { .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220024 }, | |
101 | { .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230024 }, | |
102 | { .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300024 }, | |
103 | }; | |
097c584c | 104 | |
a8823143 TL |
105 | static void __iomem *tap_base; |
106 | static u16 tap_prod_id; | |
1dbae815 | 107 | |
2e130fc3 KRC |
108 | void omap_get_die_id(struct omap_die_id *odi) |
109 | { | |
110 | odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0); | |
111 | odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1); | |
112 | odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2); | |
113 | odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3); | |
114 | } | |
115 | ||
5ebc0d52 | 116 | static void __init omap24xx_check_revision(void) |
1dbae815 TL |
117 | { |
118 | int i, j; | |
a8823143 | 119 | u32 idcode, prod_id; |
1dbae815 | 120 | u16 hawkeye; |
a8823143 | 121 | u8 dev_type, rev; |
c46732bb | 122 | struct omap_die_id odi; |
1dbae815 TL |
123 | |
124 | idcode = read_tap_reg(OMAP_TAP_IDCODE); | |
0e564848 | 125 | prod_id = read_tap_reg(tap_prod_id); |
1dbae815 TL |
126 | hawkeye = (idcode >> 12) & 0xffff; |
127 | rev = (idcode >> 28) & 0x0f; | |
128 | dev_type = (prod_id >> 16) & 0x0f; | |
c46732bb | 129 | omap_get_die_id(&odi); |
1dbae815 | 130 | |
097c584c PW |
131 | pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n", |
132 | idcode, rev, hawkeye, (idcode >> 1) & 0x7ff); | |
c46732bb | 133 | pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n", odi.id_0); |
097c584c | 134 | pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n", |
c46732bb KRC |
135 | odi.id_1, (odi.id_1 >> 28) & 0xf); |
136 | pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n", odi.id_2); | |
137 | pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n", odi.id_3); | |
097c584c PW |
138 | pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n", |
139 | prod_id, dev_type); | |
140 | ||
1dbae815 TL |
141 | /* Check hawkeye ids */ |
142 | for (i = 0; i < ARRAY_SIZE(omap_ids); i++) { | |
143 | if (hawkeye == omap_ids[i].hawkeye) | |
144 | break; | |
145 | } | |
146 | ||
147 | if (i == ARRAY_SIZE(omap_ids)) { | |
148 | printk(KERN_ERR "Unknown OMAP CPU id\n"); | |
149 | return; | |
150 | } | |
151 | ||
152 | for (j = i; j < ARRAY_SIZE(omap_ids); j++) { | |
153 | if (dev_type == omap_ids[j].dev) | |
154 | break; | |
155 | } | |
156 | ||
157 | if (j == ARRAY_SIZE(omap_ids)) { | |
158 | printk(KERN_ERR "Unknown OMAP device type. " | |
159 | "Handling it as OMAP%04x\n", | |
160 | omap_ids[i].type >> 16); | |
161 | j = i; | |
162 | } | |
1dbae815 | 163 | |
84a34344 LL |
164 | pr_info("OMAP%04x", omap_rev() >> 16); |
165 | if ((omap_rev() >> 8) & 0x0f) | |
166 | pr_info("ES%x", (omap_rev() >> 12) & 0xf); | |
097c584c | 167 | pr_info("\n"); |
a8823143 TL |
168 | } |
169 | ||
8384ce07 SP |
170 | #define OMAP3_CHECK_FEATURE(status,feat) \ |
171 | if (((status & OMAP3_ ##feat## _MASK) \ | |
172 | >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \ | |
173 | omap3_features |= OMAP3_HAS_ ##feat; \ | |
174 | } | |
175 | ||
5ebc0d52 | 176 | static void __init omap3_check_features(void) |
8384ce07 SP |
177 | { |
178 | u32 status; | |
179 | ||
180 | omap3_features = 0; | |
181 | ||
182 | status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS); | |
183 | ||
184 | OMAP3_CHECK_FEATURE(status, L2CACHE); | |
185 | OMAP3_CHECK_FEATURE(status, IVA); | |
186 | OMAP3_CHECK_FEATURE(status, SGX); | |
187 | OMAP3_CHECK_FEATURE(status, NEON); | |
188 | OMAP3_CHECK_FEATURE(status, ISP); | |
7356f0b2 VB |
189 | if (cpu_is_omap3630()) |
190 | omap3_features |= OMAP3_HAS_192MHZ_CLK; | |
ad0c63f1 | 191 | if (!cpu_is_omap3505() && !cpu_is_omap3517()) |
192 | omap3_features |= OMAP3_HAS_IO_WAKEUP; | |
8384ce07 | 193 | |
01001712 HP |
194 | omap3_features |= OMAP3_HAS_SDRC; |
195 | ||
8384ce07 SP |
196 | /* |
197 | * TODO: Get additional info (where applicable) | |
198 | * e.g. Size of L2 cache. | |
199 | */ | |
200 | } | |
201 | ||
01001712 HP |
202 | static void __init ti816x_check_features(void) |
203 | { | |
204 | omap3_features = OMAP3_HAS_NEON; | |
205 | } | |
206 | ||
5ebc0d52 | 207 | static void __init omap3_check_revision(void) |
a8823143 TL |
208 | { |
209 | u32 cpuid, idcode; | |
210 | u16 hawkeye; | |
211 | u8 rev; | |
a8823143 | 212 | |
e9acb9b6 TL |
213 | omap_chip.oc = CHIP_IS_OMAP3430; |
214 | ||
a8823143 TL |
215 | /* |
216 | * We cannot access revision registers on ES1.0. | |
217 | * If the processor type is Cortex-A8 and the revision is 0x0 | |
218 | * it means its Cortex r0p0 which is 3430 ES1.0. | |
219 | */ | |
220 | cpuid = read_cpuid(CPUID_ID); | |
221 | if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) { | |
84a34344 | 222 | omap_revision = OMAP3430_REV_ES1_0; |
e9acb9b6 | 223 | omap_chip.oc |= CHIP_IS_OMAP3430ES1; |
048f4bd7 | 224 | return; |
a8823143 TL |
225 | } |
226 | ||
227 | /* | |
228 | * Detection for 34xx ES2.0 and above can be done with just | |
229 | * hawkeye and rev. See TRM 1.5.2 Device Identification. | |
230 | * Note that rev does not map directly to our defined processor | |
231 | * revision numbers as ES1.0 uses value 0. | |
232 | */ | |
233 | idcode = read_tap_reg(OMAP_TAP_IDCODE); | |
234 | hawkeye = (idcode >> 12) & 0xffff; | |
235 | rev = (idcode >> 28) & 0xff; | |
097c584c | 236 | |
2456a10f NM |
237 | switch (hawkeye) { |
238 | case 0xb7ae: | |
239 | /* Handle 34xx/35xx devices */ | |
a8823143 | 240 | switch (rev) { |
048f4bd7 SP |
241 | case 0: /* Take care of early samples */ |
242 | case 1: | |
84a34344 | 243 | omap_revision = OMAP3430_REV_ES2_0; |
e9acb9b6 | 244 | omap_chip.oc |= CHIP_IS_OMAP3430ES2; |
a8823143 TL |
245 | break; |
246 | case 2: | |
84a34344 | 247 | omap_revision = OMAP3430_REV_ES2_1; |
e9acb9b6 | 248 | omap_chip.oc |= CHIP_IS_OMAP3430ES2; |
a8823143 TL |
249 | break; |
250 | case 3: | |
84a34344 | 251 | omap_revision = OMAP3430_REV_ES3_0; |
e9acb9b6 | 252 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_0; |
a8823143 | 253 | break; |
187e688d | 254 | case 4: |
e9acb9b6 TL |
255 | omap_revision = OMAP3430_REV_ES3_1; |
256 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_1; | |
257 | break; | |
258 | case 7: | |
edeae658 | 259 | /* FALLTHROUGH */ |
a8823143 TL |
260 | default: |
261 | /* Use the latest known revision as default */ | |
e9acb9b6 TL |
262 | omap_revision = OMAP3430_REV_ES3_1_2; |
263 | ||
264 | /* REVISIT: Add CHIP_IS_OMAP3430ES3_1_2? */ | |
265 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_1; | |
a8823143 | 266 | } |
2456a10f | 267 | break; |
4cac6018 SP |
268 | case 0xb868: |
269 | /* Handle OMAP35xx/AM35xx devices | |
270 | * | |
271 | * Set the device to be OMAP3505 here. Actual device | |
272 | * is identified later based on the features. | |
e9acb9b6 TL |
273 | * |
274 | * REVISIT: AM3505/AM3517 should have their own CHIP_IS | |
4cac6018 SP |
275 | */ |
276 | omap_revision = OMAP3505_REV(rev); | |
e9acb9b6 | 277 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_1; |
4cac6018 | 278 | break; |
edeae658 | 279 | case 0xb891: |
b0a1a6ce AG |
280 | /* Handle 36xx devices */ |
281 | omap_chip.oc |= CHIP_IS_OMAP3630ES1; | |
282 | ||
283 | switch(rev) { | |
284 | case 0: /* Take care of early samples */ | |
285 | omap_revision = OMAP3630_REV_ES1_0; | |
286 | break; | |
287 | case 1: | |
288 | omap_revision = OMAP3630_REV_ES1_1; | |
289 | omap_chip.oc |= CHIP_IS_OMAP3630ES1_1; | |
290 | break; | |
291 | case 2: | |
292 | default: | |
293 | omap_revision = OMAP3630_REV_ES1_2; | |
294 | omap_chip.oc |= CHIP_IS_OMAP3630ES1_2; | |
b0a1a6ce | 295 | } |
77c0870c | 296 | break; |
01001712 HP |
297 | case 0xb81e: |
298 | omap_chip.oc = CHIP_IS_TI816X; | |
299 | ||
300 | switch (rev) { | |
301 | case 0: | |
302 | omap_revision = TI8168_REV_ES1_0; | |
303 | break; | |
304 | case 1: | |
305 | omap_revision = TI8168_REV_ES1_1; | |
306 | break; | |
307 | default: | |
308 | omap_revision = TI8168_REV_ES1_1; | |
309 | } | |
310 | break; | |
2456a10f NM |
311 | default: |
312 | /* Unknown default to latest silicon rev as default*/ | |
b0a1a6ce AG |
313 | omap_revision = OMAP3630_REV_ES1_2; |
314 | omap_chip.oc |= CHIP_IS_OMAP3630ES1_2; | |
a8823143 | 315 | } |
1dbae815 TL |
316 | } |
317 | ||
5ebc0d52 | 318 | static void __init omap4_check_revision(void) |
b570e0ec SS |
319 | { |
320 | u32 idcode; | |
321 | u16 hawkeye; | |
322 | u8 rev; | |
b570e0ec SS |
323 | |
324 | /* | |
325 | * The IC rev detection is done with hawkeye and rev. | |
326 | * Note that rev does not map directly to defined processor | |
327 | * revision numbers as ES1.0 uses value 0. | |
328 | */ | |
329 | idcode = read_tap_reg(OMAP_TAP_IDCODE); | |
330 | hawkeye = (idcode >> 12) & 0xffff; | |
331 | rev = (idcode >> 28) & 0xff; | |
332 | ||
ed6be0ba SS |
333 | /* |
334 | * Few initial ES2.0 samples IDCODE is same as ES1.0 | |
335 | * Use ARM register to detect the correct ES version | |
336 | */ | |
337 | if (!rev) { | |
338 | idcode = read_cpuid(CPUID_ID); | |
339 | rev = (idcode & 0xf) - 1; | |
340 | } | |
341 | ||
342 | switch (hawkeye) { | |
343 | case 0xb852: | |
344 | switch (rev) { | |
345 | case 0: | |
346 | omap_revision = OMAP4430_REV_ES1_0; | |
347 | omap_chip.oc |= CHIP_IS_OMAP4430ES1; | |
348 | break; | |
349 | case 1: | |
350 | omap_revision = OMAP4430_REV_ES2_0; | |
351 | omap_chip.oc |= CHIP_IS_OMAP4430ES2; | |
352 | break; | |
353 | default: | |
354 | omap_revision = OMAP4430_REV_ES2_0; | |
355 | omap_chip.oc |= CHIP_IS_OMAP4430ES2; | |
356 | } | |
357 | break; | |
358 | default: | |
359 | /* Unknown default to latest silicon rev as default*/ | |
360 | omap_revision = OMAP4430_REV_ES2_0; | |
361 | omap_chip.oc |= CHIP_IS_OMAP4430ES2; | |
b570e0ec SS |
362 | } |
363 | ||
ed6be0ba SS |
364 | pr_info("OMAP%04x ES%d.0\n", |
365 | omap_rev() >> 16, ((omap_rev() >> 12) & 0xf) + 1); | |
b570e0ec SS |
366 | } |
367 | ||
8384ce07 | 368 | #define OMAP3_SHOW_FEATURE(feat) \ |
cedf900d KH |
369 | if (omap3_has_ ##feat()) \ |
370 | printk(#feat" "); | |
8384ce07 | 371 | |
5ebc0d52 | 372 | static void __init omap3_cpuinfo(void) |
8384ce07 | 373 | { |
048f4bd7 SP |
374 | u8 rev = GET_OMAP_REVISION(); |
375 | char cpu_name[16], cpu_rev[16]; | |
376 | ||
377 | /* OMAP3430 and OMAP3530 are assumed to be same. | |
378 | * | |
379 | * OMAP3525, OMAP3515 and OMAP3503 can be detected only based | |
380 | * on available features. Upon detection, update the CPU id | |
381 | * and CPU class bits. | |
382 | */ | |
edeae658 | 383 | if (cpu_is_omap3630()) { |
4cac6018 | 384 | strcpy(cpu_name, "OMAP3630"); |
edeae658 | 385 | } else if (cpu_is_omap3505()) { |
4cac6018 SP |
386 | /* |
387 | * AM35xx devices | |
388 | */ | |
389 | if (omap3_has_sgx()) { | |
390 | omap_revision = OMAP3517_REV(rev); | |
391 | strcpy(cpu_name, "AM3517"); | |
edeae658 | 392 | } else { |
4cac6018 SP |
393 | /* Already set in omap3_check_revision() */ |
394 | strcpy(cpu_name, "AM3505"); | |
395 | } | |
01001712 HP |
396 | } else if (cpu_is_ti816x()) { |
397 | strcpy(cpu_name, "TI816X"); | |
edeae658 FB |
398 | } else if (omap3_has_iva() && omap3_has_sgx()) { |
399 | /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */ | |
4cac6018 | 400 | strcpy(cpu_name, "OMAP3430/3530"); |
0712fb39 | 401 | } else if (omap3_has_iva()) { |
048f4bd7 | 402 | omap_revision = OMAP3525_REV(rev); |
4cac6018 | 403 | strcpy(cpu_name, "OMAP3525"); |
0712fb39 | 404 | } else if (omap3_has_sgx()) { |
048f4bd7 | 405 | omap_revision = OMAP3515_REV(rev); |
4cac6018 | 406 | strcpy(cpu_name, "OMAP3515"); |
edeae658 | 407 | } else { |
048f4bd7 | 408 | omap_revision = OMAP3503_REV(rev); |
4cac6018 | 409 | strcpy(cpu_name, "OMAP3503"); |
048f4bd7 SP |
410 | } |
411 | ||
01001712 | 412 | if (cpu_is_omap3630() || cpu_is_ti816x()) { |
76abab21 SP |
413 | switch (rev) { |
414 | case OMAP_REVBITS_00: | |
415 | strcpy(cpu_rev, "1.0"); | |
416 | break; | |
417 | case OMAP_REVBITS_01: | |
418 | strcpy(cpu_rev, "1.1"); | |
419 | break; | |
420 | case OMAP_REVBITS_02: | |
421 | /* FALLTHROUGH */ | |
422 | default: | |
423 | /* Use the latest known revision as default */ | |
424 | strcpy(cpu_rev, "1.2"); | |
425 | } | |
426 | } else if (cpu_is_omap3505() || cpu_is_omap3517()) { | |
427 | switch (rev) { | |
428 | case OMAP_REVBITS_00: | |
429 | strcpy(cpu_rev, "1.0"); | |
430 | break; | |
431 | case OMAP_REVBITS_01: | |
432 | /* FALLTHROUGH */ | |
433 | default: | |
434 | /* Use the latest known revision as default */ | |
435 | strcpy(cpu_rev, "1.1"); | |
436 | } | |
437 | } else { | |
438 | switch (rev) { | |
439 | case OMAP_REVBITS_00: | |
440 | strcpy(cpu_rev, "1.0"); | |
441 | break; | |
442 | case OMAP_REVBITS_01: | |
443 | strcpy(cpu_rev, "2.0"); | |
444 | break; | |
445 | case OMAP_REVBITS_02: | |
446 | strcpy(cpu_rev, "2.1"); | |
447 | break; | |
448 | case OMAP_REVBITS_03: | |
449 | strcpy(cpu_rev, "3.0"); | |
450 | break; | |
451 | case OMAP_REVBITS_04: | |
452 | strcpy(cpu_rev, "3.1"); | |
453 | break; | |
454 | case OMAP_REVBITS_05: | |
455 | /* FALLTHROUGH */ | |
456 | default: | |
457 | /* Use the latest known revision as default */ | |
458 | strcpy(cpu_rev, "3.1.2"); | |
459 | } | |
048f4bd7 SP |
460 | } |
461 | ||
edeae658 | 462 | /* Print verbose information */ |
cedf900d | 463 | pr_info("%s ES%s (", cpu_name, cpu_rev); |
048f4bd7 | 464 | |
8384ce07 SP |
465 | OMAP3_SHOW_FEATURE(l2cache); |
466 | OMAP3_SHOW_FEATURE(iva); | |
467 | OMAP3_SHOW_FEATURE(sgx); | |
468 | OMAP3_SHOW_FEATURE(neon); | |
469 | OMAP3_SHOW_FEATURE(isp); | |
7356f0b2 | 470 | OMAP3_SHOW_FEATURE(192mhz_clk); |
cedf900d KH |
471 | |
472 | printk(")\n"); | |
8384ce07 SP |
473 | } |
474 | ||
a8823143 TL |
475 | /* |
476 | * Try to detect the exact revision of the omap we're running on | |
477 | */ | |
5ba02dca TL |
478 | void __init omap2_check_revision(void) |
479 | { | |
a8823143 TL |
480 | /* |
481 | * At this point we have an idea about the processor revision set | |
482 | * earlier with omap2_set_globals_tap(). | |
483 | */ | |
edeae658 | 484 | if (cpu_is_omap24xx()) { |
a8823143 | 485 | omap24xx_check_revision(); |
edeae658 | 486 | } else if (cpu_is_omap34xx()) { |
8384ce07 | 487 | omap3_check_revision(); |
01001712 HP |
488 | |
489 | /* TI816X doesn't have feature register */ | |
490 | if (!cpu_is_ti816x()) | |
491 | omap3_check_features(); | |
492 | else | |
493 | ti816x_check_features(); | |
494 | ||
8384ce07 | 495 | omap3_cpuinfo(); |
e9acb9b6 | 496 | return; |
edeae658 | 497 | } else if (cpu_is_omap44xx()) { |
b570e0ec | 498 | omap4_check_revision(); |
44169075 | 499 | return; |
edeae658 | 500 | } else { |
a8823143 | 501 | pr_err("OMAP revision unknown, please fix!\n"); |
edeae658 | 502 | } |
a8823143 TL |
503 | |
504 | /* | |
505 | * OK, now we know the exact revision. Initialize omap_chip bits | |
506 | * for powerdowmain and clockdomain code. | |
507 | */ | |
508 | if (cpu_is_omap243x()) { | |
509 | /* Currently only supports 2430ES2.1 and 2430-all */ | |
510 | omap_chip.oc |= CHIP_IS_OMAP2430; | |
e9acb9b6 | 511 | return; |
a8823143 TL |
512 | } else if (cpu_is_omap242x()) { |
513 | /* Currently only supports 2420ES2.1.1 and 2420-all */ | |
514 | omap_chip.oc |= CHIP_IS_OMAP2420; | |
e9acb9b6 | 515 | return; |
a8823143 | 516 | } |
e9acb9b6 TL |
517 | |
518 | pr_err("Uninitialized omap_chip, please fix!\n"); | |
5ba02dca TL |
519 | } |
520 | ||
a8823143 TL |
521 | /* |
522 | * Set up things for map_io and processor detection later on. Gets called | |
523 | * pretty much first thing from board init. For multi-omap, this gets | |
524 | * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to | |
525 | * detect the exact revision later on in omap2_detect_revision() once map_io | |
526 | * is done. | |
527 | */ | |
0e564848 TL |
528 | void __init omap2_set_globals_tap(struct omap_globals *omap2_globals) |
529 | { | |
84a34344 | 530 | omap_revision = omap2_globals->class; |
0e564848 TL |
531 | tap_base = omap2_globals->tap; |
532 | ||
a8823143 | 533 | if (cpu_is_omap34xx()) |
0e564848 TL |
534 | tap_prod_id = 0x0210; |
535 | else | |
536 | tap_prod_id = 0x0208; | |
537 | } |