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Tony Lindgren1dbae812005-11-10 14:26:51 +00001/*
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 *
Santosh Shilimkar44169072009-05-28 14:16:04 -07009 * Copyright (C) 2009 Texas Instruments
10 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
11 *
Tony Lindgren1dbae812005-11-10 14:26:51 +000012 * 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
Tony Lindgren1dbae812005-11-10 14:26:51 +000017#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/init.h>
Russell Kingfced80c2008-09-06 12:10:45 +010020#include <linux/io.h>
Tony Lindgren1dbae812005-11-10 14:26:51 +000021
Russell King0ba8b9b2008-08-10 18:08:10 +010022#include <asm/cputype.h>
Tony Lindgren1dbae812005-11-10 14:26:51 +000023
Tony Lindgrence491cf2009-10-20 09:40:47 -070024#include <plat/common.h>
25#include <plat/control.h>
26#include <plat/cpu.h>
Syed Mohammed Khasim72d0f1c2006-12-06 17:14:05 -080027
Kan-Ru Chen2e130fc2010-08-02 14:21:41 +030028#include <mach/id.h>
29
Paul Walmsley097c5842008-07-03 12:24:45 +030030static struct omap_chip_id omap_chip;
Lauri Leukkunen84a34342008-12-10 17:36:31 -080031static unsigned int omap_revision;
32
Sanjeev Premi8384ce02009-11-22 10:10:53 -080033u32 omap3_features;
Lauri Leukkunen84a34342008-12-10 17:36:31 -080034
35unsigned int omap_rev(void)
36{
37 return omap_revision;
38}
39EXPORT_SYMBOL(omap_rev);
Paul Walmsley097c5842008-07-03 12:24:45 +030040
41/**
42 * omap_chip_is - test whether currently running OMAP matches a chip type
43 * @oc: omap_chip_t to test against
44 *
45 * Test whether the currently-running OMAP chip matches the supplied
46 * chip type 'oc'. Returns 1 upon a match; 0 upon failure.
47 */
48int omap_chip_is(struct omap_chip_id oci)
49{
50 return (oci.oc & omap_chip.oc) ? 1 : 0;
51}
52EXPORT_SYMBOL(omap_chip_is);
53
Kevin Hilman8e25ad92009-06-23 13:30:23 +030054int omap_type(void)
55{
56 u32 val = 0;
57
Felipe Balbiedeae652009-11-22 10:11:24 -080058 if (cpu_is_omap24xx()) {
Kevin Hilman8e25ad92009-06-23 13:30:23 +030059 val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
Felipe Balbiedeae652009-11-22 10:11:24 -080060 } else if (cpu_is_omap34xx()) {
Kevin Hilman8e25ad92009-06-23 13:30:23 +030061 val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
Santosh Shilimkar737daa02010-02-18 08:59:10 +000062 } else if (cpu_is_omap44xx()) {
63 val = omap_ctrl_readl(OMAP44XX_CONTROL_STATUS);
Felipe Balbiedeae652009-11-22 10:11:24 -080064 } else {
Kevin Hilman8e25ad92009-06-23 13:30:23 +030065 pr_err("Cannot detect omap type!\n");
66 goto out;
67 }
68
69 val &= OMAP2_DEVICETYPE_MASK;
70 val >>= 8;
71
72out:
73 return val;
74}
75EXPORT_SYMBOL(omap_type);
76
77
Tony Lindgrena8823142008-12-10 17:36:30 -080078/*----------------------------------------------------------------------------*/
Paul Walmsley097c5842008-07-03 12:24:45 +030079
Tony Lindgrena8823142008-12-10 17:36:30 -080080#define OMAP_TAP_IDCODE 0x0204
81#define OMAP_TAP_DIE_ID_0 0x0218
82#define OMAP_TAP_DIE_ID_1 0x021C
83#define OMAP_TAP_DIE_ID_2 0x0220
84#define OMAP_TAP_DIE_ID_3 0x0224
Paul Walmsley097c5842008-07-03 12:24:45 +030085
Tony Lindgrena8823142008-12-10 17:36:30 -080086#define read_tap_reg(reg) __raw_readl(tap_base + (reg))
Tony Lindgren0e564842008-10-06 15:49:16 +030087
Tony Lindgrena8823142008-12-10 17:36:30 -080088struct omap_id {
89 u16 hawkeye; /* Silicon type (Hawkeye id) */
90 u8 dev; /* Device type from production_id reg */
Lauri Leukkunen84a34342008-12-10 17:36:31 -080091 u32 type; /* Combined type id copied to omap_revision */
Tony Lindgrena8823142008-12-10 17:36:30 -080092};
Tony Lindgren0e564842008-10-06 15:49:16 +030093
Tony Lindgrena8823142008-12-10 17:36:30 -080094/* Register values to detect the OMAP version */
95static struct omap_id omap_ids[] __initdata = {
96 { .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200024 },
97 { .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201024 },
98 { .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202024 },
99 { .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220024 },
100 { .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230024 },
101 { .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300024 },
102};
Paul Walmsley097c5842008-07-03 12:24:45 +0300103
Tony Lindgrena8823142008-12-10 17:36:30 -0800104static void __iomem *tap_base;
105static u16 tap_prod_id;
Tony Lindgren1dbae812005-11-10 14:26:51 +0000106
Kan-Ru Chen2e130fc2010-08-02 14:21:41 +0300107void omap_get_die_id(struct omap_die_id *odi)
108{
109 odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0);
110 odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1);
111 odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2);
112 odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3);
113}
114
Nishanth Menon5ebc0d52010-08-02 14:21:40 +0300115static void __init omap24xx_check_revision(void)
Tony Lindgren1dbae812005-11-10 14:26:51 +0000116{
117 int i, j;
Tony Lindgrena8823142008-12-10 17:36:30 -0800118 u32 idcode, prod_id;
Tony Lindgren1dbae812005-11-10 14:26:51 +0000119 u16 hawkeye;
Tony Lindgrena8823142008-12-10 17:36:30 -0800120 u8 dev_type, rev;
Tony Lindgren1dbae812005-11-10 14:26:51 +0000121
122 idcode = read_tap_reg(OMAP_TAP_IDCODE);
Tony Lindgren0e564842008-10-06 15:49:16 +0300123 prod_id = read_tap_reg(tap_prod_id);
Tony Lindgren1dbae812005-11-10 14:26:51 +0000124 hawkeye = (idcode >> 12) & 0xffff;
125 rev = (idcode >> 28) & 0x0f;
126 dev_type = (prod_id >> 16) & 0x0f;
127
Paul Walmsley097c5842008-07-03 12:24:45 +0300128 pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n",
129 idcode, rev, hawkeye, (idcode >> 1) & 0x7ff);
130 pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n",
131 read_tap_reg(OMAP_TAP_DIE_ID_0));
132 pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n",
133 read_tap_reg(OMAP_TAP_DIE_ID_1),
134 (read_tap_reg(OMAP_TAP_DIE_ID_1) >> 28) & 0xf);
135 pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n",
136 read_tap_reg(OMAP_TAP_DIE_ID_2));
137 pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n",
138 read_tap_reg(OMAP_TAP_DIE_ID_3));
139 pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n",
140 prod_id, dev_type);
141
Tony Lindgren1dbae812005-11-10 14:26:51 +0000142 /* Check hawkeye ids */
143 for (i = 0; i < ARRAY_SIZE(omap_ids); i++) {
144 if (hawkeye == omap_ids[i].hawkeye)
145 break;
146 }
147
148 if (i == ARRAY_SIZE(omap_ids)) {
149 printk(KERN_ERR "Unknown OMAP CPU id\n");
150 return;
151 }
152
153 for (j = i; j < ARRAY_SIZE(omap_ids); j++) {
154 if (dev_type == omap_ids[j].dev)
155 break;
156 }
157
158 if (j == ARRAY_SIZE(omap_ids)) {
159 printk(KERN_ERR "Unknown OMAP device type. "
160 "Handling it as OMAP%04x\n",
161 omap_ids[i].type >> 16);
162 j = i;
163 }
Tony Lindgren1dbae812005-11-10 14:26:51 +0000164
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800165 pr_info("OMAP%04x", omap_rev() >> 16);
166 if ((omap_rev() >> 8) & 0x0f)
167 pr_info("ES%x", (omap_rev() >> 12) & 0xf);
Paul Walmsley097c5842008-07-03 12:24:45 +0300168 pr_info("\n");
Tony Lindgren1dbae812005-11-10 14:26:51 +0000169}
170
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800171#define OMAP3_CHECK_FEATURE(status,feat) \
172 if (((status & OMAP3_ ##feat## _MASK) \
173 >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \
174 omap3_features |= OMAP3_HAS_ ##feat; \
175 }
176
Nishanth Menon5ebc0d52010-08-02 14:21:40 +0300177static void __init omap3_check_features(void)
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800178{
179 u32 status;
180
181 omap3_features = 0;
182
183 status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS);
184
185 OMAP3_CHECK_FEATURE(status, L2CACHE);
186 OMAP3_CHECK_FEATURE(status, IVA);
187 OMAP3_CHECK_FEATURE(status, SGX);
188 OMAP3_CHECK_FEATURE(status, NEON);
189 OMAP3_CHECK_FEATURE(status, ISP);
Vishwanath BS7356f0b2010-02-22 22:09:10 -0700190 if (cpu_is_omap3630())
191 omap3_features |= OMAP3_HAS_192MHZ_CLK;
stanley.miaoad0c63f2010-08-02 14:21:40 +0300192 if (!cpu_is_omap3505() && !cpu_is_omap3517())
193 omap3_features |= OMAP3_HAS_IO_WAKEUP;
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800194
195 /*
196 * TODO: Get additional info (where applicable)
197 * e.g. Size of L2 cache.
198 */
199}
200
Nishanth Menon5ebc0d52010-08-02 14:21:40 +0300201static void __init omap3_check_revision(void)
Tony Lindgrena8823142008-12-10 17:36:30 -0800202{
203 u32 cpuid, idcode;
204 u16 hawkeye;
205 u8 rev;
Tony Lindgrena8823142008-12-10 17:36:30 -0800206
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800207 omap_chip.oc = CHIP_IS_OMAP3430;
208
Tony Lindgrena8823142008-12-10 17:36:30 -0800209 /*
210 * We cannot access revision registers on ES1.0.
211 * If the processor type is Cortex-A8 and the revision is 0x0
212 * it means its Cortex r0p0 which is 3430 ES1.0.
213 */
214 cpuid = read_cpuid(CPUID_ID);
215 if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) {
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800216 omap_revision = OMAP3430_REV_ES1_0;
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800217 omap_chip.oc |= CHIP_IS_OMAP3430ES1;
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800218 return;
Tony Lindgrena8823142008-12-10 17:36:30 -0800219 }
220
221 /*
222 * Detection for 34xx ES2.0 and above can be done with just
223 * hawkeye and rev. See TRM 1.5.2 Device Identification.
224 * Note that rev does not map directly to our defined processor
225 * revision numbers as ES1.0 uses value 0.
226 */
227 idcode = read_tap_reg(OMAP_TAP_IDCODE);
228 hawkeye = (idcode >> 12) & 0xffff;
229 rev = (idcode >> 28) & 0xff;
230
Nishanth Menon2456a102009-11-22 10:10:56 -0800231 switch (hawkeye) {
232 case 0xb7ae:
233 /* Handle 34xx/35xx devices */
Tony Lindgrena8823142008-12-10 17:36:30 -0800234 switch (rev) {
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800235 case 0: /* Take care of early samples */
236 case 1:
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800237 omap_revision = OMAP3430_REV_ES2_0;
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800238 omap_chip.oc |= CHIP_IS_OMAP3430ES2;
Tony Lindgrena8823142008-12-10 17:36:30 -0800239 break;
240 case 2:
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800241 omap_revision = OMAP3430_REV_ES2_1;
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800242 omap_chip.oc |= CHIP_IS_OMAP3430ES2;
Tony Lindgrena8823142008-12-10 17:36:30 -0800243 break;
244 case 3:
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800245 omap_revision = OMAP3430_REV_ES3_0;
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800246 omap_chip.oc |= CHIP_IS_OMAP3430ES3_0;
Tony Lindgrena8823142008-12-10 17:36:30 -0800247 break;
Tony Lindgren187e6882009-01-29 08:57:16 -0800248 case 4:
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800249 omap_revision = OMAP3430_REV_ES3_1;
250 omap_chip.oc |= CHIP_IS_OMAP3430ES3_1;
251 break;
252 case 7:
Felipe Balbiedeae652009-11-22 10:11:24 -0800253 /* FALLTHROUGH */
Tony Lindgrena8823142008-12-10 17:36:30 -0800254 default:
255 /* Use the latest known revision as default */
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800256 omap_revision = OMAP3430_REV_ES3_1_2;
257
258 /* REVISIT: Add CHIP_IS_OMAP3430ES3_1_2? */
259 omap_chip.oc |= CHIP_IS_OMAP3430ES3_1;
Tony Lindgrena8823142008-12-10 17:36:30 -0800260 }
Nishanth Menon2456a102009-11-22 10:10:56 -0800261 break;
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800262 case 0xb868:
263 /* Handle OMAP35xx/AM35xx devices
264 *
265 * Set the device to be OMAP3505 here. Actual device
266 * is identified later based on the features.
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800267 *
268 * REVISIT: AM3505/AM3517 should have their own CHIP_IS
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800269 */
270 omap_revision = OMAP3505_REV(rev);
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800271 omap_chip.oc |= CHIP_IS_OMAP3430ES3_1;
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800272 break;
Felipe Balbiedeae652009-11-22 10:11:24 -0800273 case 0xb891:
274 /* FALLTHROUGH */
Nishanth Menon2456a102009-11-22 10:10:56 -0800275 default:
276 /* Unknown default to latest silicon rev as default*/
277 omap_revision = OMAP3630_REV_ES1_0;
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800278 omap_chip.oc |= CHIP_IS_OMAP3630ES1;
Tony Lindgrena8823142008-12-10 17:36:30 -0800279 }
Tony Lindgrena8823142008-12-10 17:36:30 -0800280}
281
Nishanth Menon5ebc0d52010-08-02 14:21:40 +0300282static void __init omap4_check_revision(void)
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800283{
284 u32 idcode;
285 u16 hawkeye;
286 u8 rev;
287 char *rev_name = "ES1.0";
288
289 /*
290 * The IC rev detection is done with hawkeye and rev.
291 * Note that rev does not map directly to defined processor
292 * revision numbers as ES1.0 uses value 0.
293 */
294 idcode = read_tap_reg(OMAP_TAP_IDCODE);
295 hawkeye = (idcode >> 12) & 0xffff;
296 rev = (idcode >> 28) & 0xff;
297
298 if ((hawkeye == 0xb852) && (rev == 0x0)) {
299 omap_revision = OMAP4430_REV_ES1_0;
Abhijit Pagarec6a6e6e2010-01-26 20:12:51 -0700300 omap_chip.oc |= CHIP_IS_OMAP4430ES1;
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800301 pr_info("OMAP%04x %s\n", omap_rev() >> 16, rev_name);
302 return;
303 }
304
305 pr_err("Unknown OMAP4 CPU id\n");
306}
307
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800308#define OMAP3_SHOW_FEATURE(feat) \
Kevin Hilmancedf9002009-11-22 10:11:13 -0800309 if (omap3_has_ ##feat()) \
310 printk(#feat" ");
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800311
Nishanth Menon5ebc0d52010-08-02 14:21:40 +0300312static void __init omap3_cpuinfo(void)
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800313{
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800314 u8 rev = GET_OMAP_REVISION();
315 char cpu_name[16], cpu_rev[16];
316
317 /* OMAP3430 and OMAP3530 are assumed to be same.
318 *
319 * OMAP3525, OMAP3515 and OMAP3503 can be detected only based
320 * on available features. Upon detection, update the CPU id
321 * and CPU class bits.
322 */
Felipe Balbiedeae652009-11-22 10:11:24 -0800323 if (cpu_is_omap3630()) {
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800324 strcpy(cpu_name, "OMAP3630");
Felipe Balbiedeae652009-11-22 10:11:24 -0800325 } else if (cpu_is_omap3505()) {
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800326 /*
327 * AM35xx devices
328 */
329 if (omap3_has_sgx()) {
330 omap_revision = OMAP3517_REV(rev);
331 strcpy(cpu_name, "AM3517");
Felipe Balbiedeae652009-11-22 10:11:24 -0800332 } else {
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800333 /* Already set in omap3_check_revision() */
334 strcpy(cpu_name, "AM3505");
335 }
Felipe Balbiedeae652009-11-22 10:11:24 -0800336 } else if (omap3_has_iva() && omap3_has_sgx()) {
337 /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800338 strcpy(cpu_name, "OMAP3430/3530");
Sergey Lapin0712fb32009-12-11 16:16:37 -0800339 } else if (omap3_has_iva()) {
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800340 omap_revision = OMAP3525_REV(rev);
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800341 strcpy(cpu_name, "OMAP3525");
Sergey Lapin0712fb32009-12-11 16:16:37 -0800342 } else if (omap3_has_sgx()) {
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800343 omap_revision = OMAP3515_REV(rev);
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800344 strcpy(cpu_name, "OMAP3515");
Felipe Balbiedeae652009-11-22 10:11:24 -0800345 } else {
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800346 omap_revision = OMAP3503_REV(rev);
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800347 strcpy(cpu_name, "OMAP3503");
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800348 }
349
350 switch (rev) {
351 case OMAP_REVBITS_00:
352 strcpy(cpu_rev, "1.0");
353 break;
354 case OMAP_REVBITS_10:
355 strcpy(cpu_rev, "2.0");
356 break;
357 case OMAP_REVBITS_20:
358 strcpy(cpu_rev, "2.1");
359 break;
360 case OMAP_REVBITS_30:
361 strcpy(cpu_rev, "3.0");
362 break;
363 case OMAP_REVBITS_40:
Felipe Balbiedeae652009-11-22 10:11:24 -0800364 /* FALLTHROUGH */
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800365 default:
366 /* Use the latest known revision as default */
367 strcpy(cpu_rev, "3.1");
368 }
369
Felipe Balbiedeae652009-11-22 10:11:24 -0800370 /* Print verbose information */
Kevin Hilmancedf9002009-11-22 10:11:13 -0800371 pr_info("%s ES%s (", cpu_name, cpu_rev);
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800372
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800373 OMAP3_SHOW_FEATURE(l2cache);
374 OMAP3_SHOW_FEATURE(iva);
375 OMAP3_SHOW_FEATURE(sgx);
376 OMAP3_SHOW_FEATURE(neon);
377 OMAP3_SHOW_FEATURE(isp);
Vishwanath BS7356f0b2010-02-22 22:09:10 -0700378 OMAP3_SHOW_FEATURE(192mhz_clk);
Kevin Hilmancedf9002009-11-22 10:11:13 -0800379
380 printk(")\n");
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800381}
382
Tony Lindgrena8823142008-12-10 17:36:30 -0800383/*
384 * Try to detect the exact revision of the omap we're running on
385 */
Tony Lindgren5ba02dc2008-12-10 17:36:30 -0800386void __init omap2_check_revision(void)
387{
Tony Lindgrena8823142008-12-10 17:36:30 -0800388 /*
389 * At this point we have an idea about the processor revision set
390 * earlier with omap2_set_globals_tap().
391 */
Felipe Balbiedeae652009-11-22 10:11:24 -0800392 if (cpu_is_omap24xx()) {
Tony Lindgrena8823142008-12-10 17:36:30 -0800393 omap24xx_check_revision();
Felipe Balbiedeae652009-11-22 10:11:24 -0800394 } else if (cpu_is_omap34xx()) {
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800395 omap3_check_revision();
Nishanth Menon05574bb2009-11-22 10:11:12 -0800396 omap3_check_features();
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800397 omap3_cpuinfo();
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800398 return;
Felipe Balbiedeae652009-11-22 10:11:24 -0800399 } else if (cpu_is_omap44xx()) {
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800400 omap4_check_revision();
Santosh Shilimkar44169072009-05-28 14:16:04 -0700401 return;
Felipe Balbiedeae652009-11-22 10:11:24 -0800402 } else {
Tony Lindgrena8823142008-12-10 17:36:30 -0800403 pr_err("OMAP revision unknown, please fix!\n");
Felipe Balbiedeae652009-11-22 10:11:24 -0800404 }
Tony Lindgrena8823142008-12-10 17:36:30 -0800405
406 /*
407 * OK, now we know the exact revision. Initialize omap_chip bits
408 * for powerdowmain and clockdomain code.
409 */
410 if (cpu_is_omap243x()) {
411 /* Currently only supports 2430ES2.1 and 2430-all */
412 omap_chip.oc |= CHIP_IS_OMAP2430;
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800413 return;
Tony Lindgrena8823142008-12-10 17:36:30 -0800414 } else if (cpu_is_omap242x()) {
415 /* Currently only supports 2420ES2.1.1 and 2420-all */
416 omap_chip.oc |= CHIP_IS_OMAP2420;
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800417 return;
Tony Lindgrena8823142008-12-10 17:36:30 -0800418 }
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800419
420 pr_err("Uninitialized omap_chip, please fix!\n");
Tony Lindgren5ba02dc2008-12-10 17:36:30 -0800421}
422
Tony Lindgrena8823142008-12-10 17:36:30 -0800423/*
424 * Set up things for map_io and processor detection later on. Gets called
425 * pretty much first thing from board init. For multi-omap, this gets
426 * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to
427 * detect the exact revision later on in omap2_detect_revision() once map_io
428 * is done.
429 */
Tony Lindgren0e564842008-10-06 15:49:16 +0300430void __init omap2_set_globals_tap(struct omap_globals *omap2_globals)
431{
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800432 omap_revision = omap2_globals->class;
Tony Lindgren0e564842008-10-06 15:49:16 +0300433 tap_base = omap2_globals->tap;
434
Tony Lindgrena8823142008-12-10 17:36:30 -0800435 if (cpu_is_omap34xx())
Tony Lindgren0e564842008-10-06 15:49:16 +0300436 tap_prod_id = 0x0210;
437 else
438 tap_prod_id = 0x0208;
439}