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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 *
Nishant Kamate49c4d22011-02-17 09:55:03 -08009 * Copyright (C) 2009-11 Texas Instruments
Santosh Shilimkar44169072009-05-28 14:16:04 -070010 * 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 Lindgren4e653312011-11-10 22:45:17 +010024#include "common.h"
Tony Lindgrence491cf2009-10-20 09:40:47 -070025#include <plat/cpu.h>
Syed Mohammed Khasim72d0f1c2006-12-06 17:14:05 -080026
Kan-Ru Chen2e130fc2010-08-02 14:21:41 +030027#include <mach/id.h>
28
Paul Walmsley4814ced2010-10-08 11:40:20 -060029#include "control.h"
30
Lauri Leukkunen84a34342008-12-10 17:36:31 -080031static unsigned int omap_revision;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +053032static const char *cpu_rev;
Aneesh Vcc0170b2011-07-02 08:00:22 +053033u32 omap_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
Kevin Hilman8e25ad92009-06-23 13:30:23 +030041int omap_type(void)
42{
43 u32 val = 0;
44
Felipe Balbiedeae652009-11-22 10:11:24 -080045 if (cpu_is_omap24xx()) {
Kevin Hilman8e25ad92009-06-23 13:30:23 +030046 val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
Afzal Mohammedfb3cfb12012-03-05 16:11:01 -080047 } else if (cpu_is_am33xx()) {
48 val = omap_ctrl_readl(AM33XX_CONTROL_STATUS);
Felipe Balbiedeae652009-11-22 10:11:24 -080049 } else if (cpu_is_omap34xx()) {
Kevin Hilman8e25ad92009-06-23 13:30:23 +030050 val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
Santosh Shilimkar737daa02010-02-18 08:59:10 +000051 } else if (cpu_is_omap44xx()) {
Santosh Shilimkardcf5ef32010-09-27 14:02:58 -060052 val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS);
Felipe Balbiedeae652009-11-22 10:11:24 -080053 } else {
Kevin Hilman8e25ad92009-06-23 13:30:23 +030054 pr_err("Cannot detect omap type!\n");
55 goto out;
56 }
57
58 val &= OMAP2_DEVICETYPE_MASK;
59 val >>= 8;
60
61out:
62 return val;
63}
64EXPORT_SYMBOL(omap_type);
65
66
Tony Lindgrena8823142008-12-10 17:36:30 -080067/*----------------------------------------------------------------------------*/
Paul Walmsley097c5842008-07-03 12:24:45 +030068
Tony Lindgrena8823142008-12-10 17:36:30 -080069#define OMAP_TAP_IDCODE 0x0204
70#define OMAP_TAP_DIE_ID_0 0x0218
71#define OMAP_TAP_DIE_ID_1 0x021C
72#define OMAP_TAP_DIE_ID_2 0x0220
73#define OMAP_TAP_DIE_ID_3 0x0224
Paul Walmsley097c5842008-07-03 12:24:45 +030074
Andy Greenb235e002011-03-12 22:50:54 +000075#define OMAP_TAP_DIE_ID_44XX_0 0x0200
76#define OMAP_TAP_DIE_ID_44XX_1 0x0208
77#define OMAP_TAP_DIE_ID_44XX_2 0x020c
78#define OMAP_TAP_DIE_ID_44XX_3 0x0210
79
Tony Lindgrena8823142008-12-10 17:36:30 -080080#define read_tap_reg(reg) __raw_readl(tap_base + (reg))
Tony Lindgren0e564842008-10-06 15:49:16 +030081
Tony Lindgrena8823142008-12-10 17:36:30 -080082struct omap_id {
83 u16 hawkeye; /* Silicon type (Hawkeye id) */
84 u8 dev; /* Device type from production_id reg */
Lauri Leukkunen84a34342008-12-10 17:36:31 -080085 u32 type; /* Combined type id copied to omap_revision */
Tony Lindgrena8823142008-12-10 17:36:30 -080086};
Tony Lindgren0e564842008-10-06 15:49:16 +030087
Tony Lindgrena8823142008-12-10 17:36:30 -080088/* Register values to detect the OMAP version */
89static struct omap_id omap_ids[] __initdata = {
90 { .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200024 },
91 { .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201024 },
92 { .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202024 },
93 { .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220024 },
94 { .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230024 },
95 { .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300024 },
96};
Paul Walmsley097c5842008-07-03 12:24:45 +030097
Tony Lindgrena8823142008-12-10 17:36:30 -080098static void __iomem *tap_base;
99static u16 tap_prod_id;
Tony Lindgren1dbae812005-11-10 14:26:51 +0000100
Kan-Ru Chen2e130fc2010-08-02 14:21:41 +0300101void omap_get_die_id(struct omap_die_id *odi)
102{
Andy Greenb235e002011-03-12 22:50:54 +0000103 if (cpu_is_omap44xx()) {
104 odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_0);
105 odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_1);
106 odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_2);
107 odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_3);
108
109 return;
110 }
Kan-Ru Chen2e130fc2010-08-02 14:21:41 +0300111 odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0);
112 odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1);
113 odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2);
114 odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3);
115}
116
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530117void __init omap2xxx_check_revision(void)
Tony Lindgren1dbae812005-11-10 14:26:51 +0000118{
119 int i, j;
Tony Lindgrena8823142008-12-10 17:36:30 -0800120 u32 idcode, prod_id;
Tony Lindgren1dbae812005-11-10 14:26:51 +0000121 u16 hawkeye;
Tony Lindgrena8823142008-12-10 17:36:30 -0800122 u8 dev_type, rev;
Kan-Ru Chenc46732b2010-08-02 14:21:41 +0300123 struct omap_die_id odi;
Tony Lindgren1dbae812005-11-10 14:26:51 +0000124
125 idcode = read_tap_reg(OMAP_TAP_IDCODE);
Tony Lindgren0e564842008-10-06 15:49:16 +0300126 prod_id = read_tap_reg(tap_prod_id);
Tony Lindgren1dbae812005-11-10 14:26:51 +0000127 hawkeye = (idcode >> 12) & 0xffff;
128 rev = (idcode >> 28) & 0x0f;
129 dev_type = (prod_id >> 16) & 0x0f;
Kan-Ru Chenc46732b2010-08-02 14:21:41 +0300130 omap_get_die_id(&odi);
Tony Lindgren1dbae812005-11-10 14:26:51 +0000131
Paul Walmsley097c5842008-07-03 12:24:45 +0300132 pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n",
133 idcode, rev, hawkeye, (idcode >> 1) & 0x7ff);
Kan-Ru Chenc46732b2010-08-02 14:21:41 +0300134 pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n", odi.id_0);
Paul Walmsley097c5842008-07-03 12:24:45 +0300135 pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n",
Kan-Ru Chenc46732b2010-08-02 14:21:41 +0300136 odi.id_1, (odi.id_1 >> 28) & 0xf);
137 pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n", odi.id_2);
138 pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n", odi.id_3);
Paul Walmsley097c5842008-07-03 12:24:45 +0300139 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
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530171#define OMAP3_SHOW_FEATURE(feat) \
172 if (omap3_has_ ##feat()) \
173 printk(#feat" ");
174
175static void __init omap3_cpuinfo(void)
176{
177 const char *cpu_name;
178
179 /*
180 * OMAP3430 and OMAP3530 are assumed to be same.
181 *
182 * OMAP3525, OMAP3515 and OMAP3503 can be detected only based
183 * on available features. Upon detection, update the CPU id
184 * and CPU class bits.
185 */
186 if (cpu_is_omap3630()) {
187 cpu_name = "OMAP3630";
188 } else if (cpu_is_omap3517()) {
189 /* AM35xx devices */
190 cpu_name = (omap3_has_sgx()) ? "AM3517" : "AM3505";
191 } else if (cpu_is_ti816x()) {
192 cpu_name = "TI816X";
193 } else if (cpu_is_am335x()) {
194 cpu_name = "AM335X";
195 } else if (cpu_is_ti814x()) {
196 cpu_name = "TI814X";
197 } else if (omap3_has_iva() && omap3_has_sgx()) {
198 /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */
199 cpu_name = "OMAP3430/3530";
200 } else if (omap3_has_iva()) {
201 cpu_name = "OMAP3525";
202 } else if (omap3_has_sgx()) {
203 cpu_name = "OMAP3515";
204 } else {
205 cpu_name = "OMAP3503";
206 }
207
208 /* Print verbose information */
209 pr_info("%s ES%s (", cpu_name, cpu_rev);
210
211 OMAP3_SHOW_FEATURE(l2cache);
212 OMAP3_SHOW_FEATURE(iva);
213 OMAP3_SHOW_FEATURE(sgx);
214 OMAP3_SHOW_FEATURE(neon);
215 OMAP3_SHOW_FEATURE(isp);
216 OMAP3_SHOW_FEATURE(192mhz_clk);
217
218 printk(")\n");
219}
220
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800221#define OMAP3_CHECK_FEATURE(status,feat) \
222 if (((status & OMAP3_ ##feat## _MASK) \
223 >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \
Aneesh Vcc0170b2011-07-02 08:00:22 +0530224 omap_features |= OMAP3_HAS_ ##feat; \
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800225 }
226
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530227void __init omap3xxx_check_features(void)
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800228{
229 u32 status;
230
Aneesh Vcc0170b2011-07-02 08:00:22 +0530231 omap_features = 0;
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800232
233 status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS);
234
235 OMAP3_CHECK_FEATURE(status, L2CACHE);
236 OMAP3_CHECK_FEATURE(status, IVA);
237 OMAP3_CHECK_FEATURE(status, SGX);
238 OMAP3_CHECK_FEATURE(status, NEON);
239 OMAP3_CHECK_FEATURE(status, ISP);
Vishwanath BS7356f0b2010-02-22 22:09:10 -0700240 if (cpu_is_omap3630())
Aneesh Vcc0170b2011-07-02 08:00:22 +0530241 omap_features |= OMAP3_HAS_192MHZ_CLK;
Paul Walmsleyb02b9172011-10-06 17:18:45 -0600242 if (cpu_is_omap3430() || cpu_is_omap3630())
Aneesh Vcc0170b2011-07-02 08:00:22 +0530243 omap_features |= OMAP3_HAS_IO_WAKEUP;
Paul Walmsleyb02b9172011-10-06 17:18:45 -0600244 if (cpu_is_omap3630() || omap_rev() == OMAP3430_REV_ES3_1 ||
245 omap_rev() == OMAP3430_REV_ES3_1_2)
246 omap_features |= OMAP3_HAS_IO_CHAIN_CTRL;
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800247
Aneesh Vcc0170b2011-07-02 08:00:22 +0530248 omap_features |= OMAP3_HAS_SDRC;
Hemant Pedanekar01001712011-02-16 08:31:39 -0800249
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800250 /*
251 * TODO: Get additional info (where applicable)
252 * e.g. Size of L2 cache.
253 */
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530254
255 omap3_cpuinfo();
Sanjeev Premi8384ce02009-11-22 10:10:53 -0800256}
257
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530258void __init omap4xxx_check_features(void)
Aneesh Vcc0170b2011-07-02 08:00:22 +0530259{
260 u32 si_type;
261
262 if (cpu_is_omap443x())
263 omap_features |= OMAP4_HAS_MPU_1GHZ;
264
265
266 if (cpu_is_omap446x()) {
267 si_type =
268 read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1);
269 switch ((si_type & (3 << 16)) >> 16) {
270 case 2:
271 /* High performance device */
272 omap_features |= OMAP4_HAS_MPU_1_5GHZ;
273 break;
274 case 1:
275 default:
276 /* Standard device */
277 omap_features |= OMAP4_HAS_MPU_1_2GHZ;
278 break;
279 }
280 }
281}
282
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530283void __init ti81xx_check_features(void)
Hemant Pedanekar01001712011-02-16 08:31:39 -0800284{
Aneesh Vcc0170b2011-07-02 08:00:22 +0530285 omap_features = OMAP3_HAS_NEON;
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530286 omap3_cpuinfo();
Hemant Pedanekar01001712011-02-16 08:31:39 -0800287}
288
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530289void __init omap3xxx_check_revision(void)
Tony Lindgrena8823142008-12-10 17:36:30 -0800290{
291 u32 cpuid, idcode;
292 u16 hawkeye;
293 u8 rev;
Tony Lindgrena8823142008-12-10 17:36:30 -0800294
295 /*
296 * We cannot access revision registers on ES1.0.
297 * If the processor type is Cortex-A8 and the revision is 0x0
298 * it means its Cortex r0p0 which is 3430 ES1.0.
299 */
300 cpuid = read_cpuid(CPUID_ID);
301 if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) {
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800302 omap_revision = OMAP3430_REV_ES1_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530303 cpu_rev = "1.0";
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800304 return;
Tony Lindgrena8823142008-12-10 17:36:30 -0800305 }
306
307 /*
308 * Detection for 34xx ES2.0 and above can be done with just
309 * hawkeye and rev. See TRM 1.5.2 Device Identification.
310 * Note that rev does not map directly to our defined processor
311 * revision numbers as ES1.0 uses value 0.
312 */
313 idcode = read_tap_reg(OMAP_TAP_IDCODE);
314 hawkeye = (idcode >> 12) & 0xffff;
315 rev = (idcode >> 28) & 0xff;
316
Nishanth Menon2456a102009-11-22 10:10:56 -0800317 switch (hawkeye) {
318 case 0xb7ae:
319 /* Handle 34xx/35xx devices */
Tony Lindgrena8823142008-12-10 17:36:30 -0800320 switch (rev) {
Sanjeev Premi048f4bd2009-11-22 10:10:54 -0800321 case 0: /* Take care of early samples */
322 case 1:
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800323 omap_revision = OMAP3430_REV_ES2_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530324 cpu_rev = "2.0";
Tony Lindgrena8823142008-12-10 17:36:30 -0800325 break;
326 case 2:
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800327 omap_revision = OMAP3430_REV_ES2_1;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530328 cpu_rev = "2.1";
Tony Lindgrena8823142008-12-10 17:36:30 -0800329 break;
330 case 3:
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800331 omap_revision = OMAP3430_REV_ES3_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530332 cpu_rev = "3.0";
Tony Lindgrena8823142008-12-10 17:36:30 -0800333 break;
Tony Lindgren187e6882009-01-29 08:57:16 -0800334 case 4:
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800335 omap_revision = OMAP3430_REV_ES3_1;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530336 cpu_rev = "3.1";
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800337 break;
338 case 7:
Felipe Balbiedeae652009-11-22 10:11:24 -0800339 /* FALLTHROUGH */
Tony Lindgrena8823142008-12-10 17:36:30 -0800340 default:
341 /* Use the latest known revision as default */
Tony Lindgrene9acb9b2010-01-19 15:40:26 -0800342 omap_revision = OMAP3430_REV_ES3_1_2;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530343 cpu_rev = "3.1.2";
Tony Lindgrena8823142008-12-10 17:36:30 -0800344 }
Nishanth Menon2456a102009-11-22 10:10:56 -0800345 break;
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800346 case 0xb868:
Paul Walmsley1f1b0352011-09-13 19:52:13 -0600347 /*
348 * Handle OMAP/AM 3505/3517 devices
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800349 *
Paul Walmsley1f1b0352011-09-13 19:52:13 -0600350 * Set the device to be OMAP3517 here. Actual device
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800351 * is identified later based on the features.
352 */
Paul Walmsley9ed2ba72011-09-13 19:52:14 -0600353 switch (rev) {
354 case 0:
355 omap_revision = OMAP3517_REV_ES1_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530356 cpu_rev = "1.0";
Paul Walmsley9ed2ba72011-09-13 19:52:14 -0600357 break;
358 case 1:
359 /* FALLTHROUGH */
360 default:
361 omap_revision = OMAP3517_REV_ES1_1;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530362 cpu_rev = "1.1";
Paul Walmsley9ed2ba72011-09-13 19:52:14 -0600363 }
Sanjeev Premi4cac6012009-11-22 10:10:58 -0800364 break;
Felipe Balbiedeae652009-11-22 10:11:24 -0800365 case 0xb891:
Anand Gadiyarb0a1a6c2010-08-03 19:59:24 +0000366 /* Handle 36xx devices */
Anand Gadiyarb0a1a6c2010-08-03 19:59:24 +0000367
368 switch(rev) {
369 case 0: /* Take care of early samples */
370 omap_revision = OMAP3630_REV_ES1_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530371 cpu_rev = "1.0";
Anand Gadiyarb0a1a6c2010-08-03 19:59:24 +0000372 break;
373 case 1:
374 omap_revision = OMAP3630_REV_ES1_1;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530375 cpu_rev = "1.1";
Anand Gadiyarb0a1a6c2010-08-03 19:59:24 +0000376 break;
377 case 2:
Paul Walmsley51ec8112011-09-13 19:52:15 -0600378 /* FALLTHROUGH */
Anand Gadiyarb0a1a6c2010-08-03 19:59:24 +0000379 default:
Paul Walmsley51ec8112011-09-13 19:52:15 -0600380 omap_revision = OMAP3630_REV_ES1_2;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530381 cpu_rev = "1.2";
Anand Gadiyarb0a1a6c2010-08-03 19:59:24 +0000382 }
Nishanth Menon77c08702010-08-16 09:21:19 +0300383 break;
Hemant Pedanekar01001712011-02-16 08:31:39 -0800384 case 0xb81e:
Hemant Pedanekar01001712011-02-16 08:31:39 -0800385 switch (rev) {
386 case 0:
387 omap_revision = TI8168_REV_ES1_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530388 cpu_rev = "1.0";
Hemant Pedanekar01001712011-02-16 08:31:39 -0800389 break;
390 case 1:
Paul Walmsley51ec8112011-09-13 19:52:15 -0600391 /* FALLTHROUGH */
Hemant Pedanekar01001712011-02-16 08:31:39 -0800392 default:
Paul Walmsley51ec8112011-09-13 19:52:15 -0600393 omap_revision = TI8168_REV_ES1_1;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530394 cpu_rev = "1.1";
Paul Walmsley3b32b7d2011-09-13 19:52:15 -0600395 break;
Hemant Pedanekar01001712011-02-16 08:31:39 -0800396 }
397 break;
Afzal Mohammed1e6cb142011-12-13 10:46:43 -0800398 case 0xb944:
399 omap_revision = AM335X_REV_ES1_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530400 cpu_rev = "1.0";
Vaibhav Hiremathc2d13552012-01-23 13:26:47 +0530401 break;
Hemant Pedanekar4390f5b2011-12-13 10:46:45 -0800402 case 0xb8f2:
403 switch (rev) {
404 case 0:
405 /* FALLTHROUGH */
406 case 1:
407 omap_revision = TI8148_REV_ES1_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530408 cpu_rev = "1.0";
Hemant Pedanekar4390f5b2011-12-13 10:46:45 -0800409 break;
410 case 2:
411 omap_revision = TI8148_REV_ES2_0;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530412 cpu_rev = "2.0";
Hemant Pedanekar4390f5b2011-12-13 10:46:45 -0800413 break;
414 case 3:
415 /* FALLTHROUGH */
416 default:
417 omap_revision = TI8148_REV_ES2_1;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530418 cpu_rev = "2.1";
Hemant Pedanekar4390f5b2011-12-13 10:46:45 -0800419 break;
420 }
Afzal Mohammed1e6cb142011-12-13 10:46:43 -0800421 break;
Nishanth Menon2456a102009-11-22 10:10:56 -0800422 default:
Paul Walmsley51ec8112011-09-13 19:52:15 -0600423 /* Unknown default to latest silicon rev as default */
Paul Walmsley3b32b7d2011-09-13 19:52:15 -0600424 omap_revision = OMAP3630_REV_ES1_2;
Vaibhav Hiremath50a01e62011-12-19 15:50:14 +0530425 cpu_rev = "1.2";
Paul Walmsley51ec8112011-09-13 19:52:15 -0600426 pr_warn("Warning: unknown chip type; assuming OMAP3630ES1.2\n");
Tony Lindgrena8823142008-12-10 17:36:30 -0800427 }
Tony Lindgrena8823142008-12-10 17:36:30 -0800428}
429
Vaibhav Hiremath4de34f32011-12-19 15:50:15 +0530430void __init omap4xxx_check_revision(void)
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800431{
432 u32 idcode;
433 u16 hawkeye;
434 u8 rev;
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800435
436 /*
437 * The IC rev detection is done with hawkeye and rev.
438 * Note that rev does not map directly to defined processor
439 * revision numbers as ES1.0 uses value 0.
440 */
441 idcode = read_tap_reg(OMAP_TAP_IDCODE);
442 hawkeye = (idcode >> 12) & 0xffff;
Nishant Kamate49c4d22011-02-17 09:55:03 -0800443 rev = (idcode >> 28) & 0xf;
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800444
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530445 /*
Aneesh Vfa54dcc2011-07-02 08:00:21 +0530446 * Few initial 4430 ES2.0 samples IDCODE is same as ES1.0
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530447 * Use ARM register to detect the correct ES version
448 */
Leonid Iziumtsevec023e42011-12-13 10:46:44 -0800449 if (!rev && (hawkeye != 0xb94e) && (hawkeye != 0xb975)) {
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530450 idcode = read_cpuid(CPUID_ID);
451 rev = (idcode & 0xf) - 1;
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800452 }
453
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530454 switch (hawkeye) {
455 case 0xb852:
456 switch (rev) {
457 case 0:
458 omap_revision = OMAP4430_REV_ES1_0;
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530459 break;
460 case 1:
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530461 default:
462 omap_revision = OMAP4430_REV_ES2_0;
Nishant Kamate49c4d22011-02-17 09:55:03 -0800463 }
464 break;
465 case 0xb95c:
466 switch (rev) {
467 case 3:
468 omap_revision = OMAP4430_REV_ES2_1;
Nishant Kamate49c4d22011-02-17 09:55:03 -0800469 break;
470 case 4:
Nishant Kamate49c4d22011-02-17 09:55:03 -0800471 omap_revision = OMAP4430_REV_ES2_2;
David Anders55035c12011-12-13 10:46:44 -0800472 break;
473 case 6:
474 default:
475 omap_revision = OMAP4430_REV_ES2_3;
Nishant Kamate49c4d22011-02-17 09:55:03 -0800476 }
477 break;
Aneesh Vfa54dcc2011-07-02 08:00:21 +0530478 case 0xb94e:
479 switch (rev) {
480 case 0:
481 default:
482 omap_revision = OMAP4460_REV_ES1_0;
Aneesh Vfa54dcc2011-07-02 08:00:21 +0530483 break;
484 }
485 break;
Leonid Iziumtsevec023e42011-12-13 10:46:44 -0800486 case 0xb975:
487 switch (rev) {
488 case 0:
489 default:
490 omap_revision = OMAP4470_REV_ES1_0;
491 break;
492 }
493 break;
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530494 default:
Nishant Kamate49c4d22011-02-17 09:55:03 -0800495 /* Unknown default to latest silicon rev as default */
David Anders55035c12011-12-13 10:46:44 -0800496 omap_revision = OMAP4430_REV_ES2_3;
Santosh Shilimkared6be0b2010-09-16 18:44:46 +0530497 }
498
Nishant Kamate49c4d22011-02-17 09:55:03 -0800499 pr_info("OMAP%04x ES%d.%d\n", omap_rev() >> 16,
500 ((omap_rev() >> 12) & 0xf), ((omap_rev() >> 8) & 0xf));
Santosh Shilimkarb570e0e2009-12-11 16:16:34 -0800501}
502
Tony Lindgrena8823142008-12-10 17:36:30 -0800503/*
504 * Set up things for map_io and processor detection later on. Gets called
505 * pretty much first thing from board init. For multi-omap, this gets
506 * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to
507 * detect the exact revision later on in omap2_detect_revision() once map_io
508 * is done.
509 */
Tony Lindgren0e564842008-10-06 15:49:16 +0300510void __init omap2_set_globals_tap(struct omap_globals *omap2_globals)
511{
Lauri Leukkunen84a34342008-12-10 17:36:31 -0800512 omap_revision = omap2_globals->class;
Tony Lindgren0e564842008-10-06 15:49:16 +0300513 tap_base = omap2_globals->tap;
514
Tony Lindgrena8823142008-12-10 17:36:30 -0800515 if (cpu_is_omap34xx())
Tony Lindgren0e564842008-10-06 15:49:16 +0300516 tap_prod_id = 0x0210;
517 else
518 tap_prod_id = 0x0208;
519}