2 * linux/arch/arm/mach-omap2/id.c
4 * OMAP2 CPU identification code
6 * Copyright (C) 2005 Nokia Corporation
7 * Written by Tony Lindgren <tony@atomide.com>
9 * Copyright (C) 2009-11 Texas Instruments
10 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
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.
17 #include <linux/module.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
21 #include <linux/slab.h>
24 #include <linux/sys_soc.h>
27 #include <asm/cputype.h>
36 #define OMAP4_SILICON_TYPE_STANDARD 0x01
37 #define OMAP4_SILICON_TYPE_PERFORMANCE 0x02
39 #define OMAP_SOC_MAX_NAME_LENGTH 16
41 static unsigned int omap_revision
;
42 static char soc_name
[OMAP_SOC_MAX_NAME_LENGTH
];
43 static char soc_rev
[OMAP_SOC_MAX_NAME_LENGTH
];
46 unsigned int omap_rev(void)
50 EXPORT_SYMBOL(omap_rev
);
56 if (cpu_is_omap24xx()) {
57 val
= omap_ctrl_readl(OMAP24XX_CONTROL_STATUS
);
58 } else if (soc_is_am33xx() || soc_is_am43xx()) {
59 val
= omap_ctrl_readl(AM33XX_CONTROL_STATUS
);
60 } else if (cpu_is_omap34xx()) {
61 val
= omap_ctrl_readl(OMAP343X_CONTROL_STATUS
);
62 } else if (cpu_is_omap44xx()) {
63 val
= omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS
);
64 } else if (soc_is_omap54xx() || soc_is_dra7xx()) {
65 val
= omap_ctrl_readl(OMAP5XXX_CONTROL_STATUS
);
66 val
&= OMAP5_DEVICETYPE_MASK
;
70 pr_err("Cannot detect omap type!\n");
74 val
&= OMAP2_DEVICETYPE_MASK
;
80 EXPORT_SYMBOL(omap_type
);
83 /*----------------------------------------------------------------------------*/
85 #define OMAP_TAP_IDCODE 0x0204
86 #define OMAP_TAP_DIE_ID_0 0x0218
87 #define OMAP_TAP_DIE_ID_1 0x021C
88 #define OMAP_TAP_DIE_ID_2 0x0220
89 #define OMAP_TAP_DIE_ID_3 0x0224
91 #define OMAP_TAP_DIE_ID_44XX_0 0x0200
92 #define OMAP_TAP_DIE_ID_44XX_1 0x0208
93 #define OMAP_TAP_DIE_ID_44XX_2 0x020c
94 #define OMAP_TAP_DIE_ID_44XX_3 0x0210
96 #define read_tap_reg(reg) __raw_readl(tap_base + (reg))
99 u16 hawkeye
; /* Silicon type (Hawkeye id) */
100 u8 dev
; /* Device type from production_id reg */
101 u32 type
; /* Combined type id copied to omap_revision */
104 /* Register values to detect the OMAP version */
105 static struct omap_id omap_ids
[] __initdata
= {
106 { .hawkeye
= 0xb5d9, .dev
= 0x0, .type
= 0x24200024 },
107 { .hawkeye
= 0xb5d9, .dev
= 0x1, .type
= 0x24201024 },
108 { .hawkeye
= 0xb5d9, .dev
= 0x2, .type
= 0x24202024 },
109 { .hawkeye
= 0xb5d9, .dev
= 0x4, .type
= 0x24220024 },
110 { .hawkeye
= 0xb5d9, .dev
= 0x8, .type
= 0x24230024 },
111 { .hawkeye
= 0xb68a, .dev
= 0x0, .type
= 0x24300024 },
114 static void __iomem
*tap_base
;
115 static u16 tap_prod_id
;
117 void omap_get_die_id(struct omap_die_id
*odi
)
119 if (cpu_is_omap44xx() || soc_is_omap54xx() || soc_is_dra7xx()) {
120 odi
->id_0
= read_tap_reg(OMAP_TAP_DIE_ID_44XX_0
);
121 odi
->id_1
= read_tap_reg(OMAP_TAP_DIE_ID_44XX_1
);
122 odi
->id_2
= read_tap_reg(OMAP_TAP_DIE_ID_44XX_2
);
123 odi
->id_3
= read_tap_reg(OMAP_TAP_DIE_ID_44XX_3
);
127 odi
->id_0
= read_tap_reg(OMAP_TAP_DIE_ID_0
);
128 odi
->id_1
= read_tap_reg(OMAP_TAP_DIE_ID_1
);
129 odi
->id_2
= read_tap_reg(OMAP_TAP_DIE_ID_2
);
130 odi
->id_3
= read_tap_reg(OMAP_TAP_DIE_ID_3
);
133 void __init
omap2xxx_check_revision(void)
139 struct omap_die_id odi
;
141 idcode
= read_tap_reg(OMAP_TAP_IDCODE
);
142 prod_id
= read_tap_reg(tap_prod_id
);
143 hawkeye
= (idcode
>> 12) & 0xffff;
144 rev
= (idcode
>> 28) & 0x0f;
145 dev_type
= (prod_id
>> 16) & 0x0f;
146 omap_get_die_id(&odi
);
148 pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n",
149 idcode
, rev
, hawkeye
, (idcode
>> 1) & 0x7ff);
150 pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n", odi
.id_0
);
151 pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n",
152 odi
.id_1
, (odi
.id_1
>> 28) & 0xf);
153 pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n", odi
.id_2
);
154 pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n", odi
.id_3
);
155 pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n",
158 /* Check hawkeye ids */
159 for (i
= 0; i
< ARRAY_SIZE(omap_ids
); i
++) {
160 if (hawkeye
== omap_ids
[i
].hawkeye
)
164 if (i
== ARRAY_SIZE(omap_ids
)) {
165 printk(KERN_ERR
"Unknown OMAP CPU id\n");
169 for (j
= i
; j
< ARRAY_SIZE(omap_ids
); j
++) {
170 if (dev_type
== omap_ids
[j
].dev
)
174 if (j
== ARRAY_SIZE(omap_ids
)) {
175 pr_err("Unknown OMAP device type. Handling it as OMAP%04x\n",
176 omap_ids
[i
].type
>> 16);
180 sprintf(soc_name
, "OMAP%04x", omap_rev() >> 16);
181 sprintf(soc_rev
, "ES%x", (omap_rev() >> 12) & 0xf);
183 pr_info("%s", soc_name
);
184 if ((omap_rev() >> 8) & 0x0f)
185 pr_info("%s", soc_rev
);
189 #define OMAP3_SHOW_FEATURE(feat) \
190 if (omap3_has_ ##feat()) \
193 static void __init
omap3_cpuinfo(void)
195 const char *cpu_name
;
198 * OMAP3430 and OMAP3530 are assumed to be same.
200 * OMAP3525, OMAP3515 and OMAP3503 can be detected only based
201 * on available features. Upon detection, update the CPU id
202 * and CPU class bits.
204 if (cpu_is_omap3630()) {
205 cpu_name
= "OMAP3630";
206 } else if (soc_is_am35xx()) {
207 cpu_name
= (omap3_has_sgx()) ? "AM3517" : "AM3505";
208 } else if (cpu_is_ti816x()) {
210 } else if (soc_is_am335x()) {
212 } else if (soc_is_am437x()) {
214 } else if (cpu_is_ti814x()) {
216 } else if (omap3_has_iva() && omap3_has_sgx()) {
217 /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */
218 cpu_name
= "OMAP3430/3530";
219 } else if (omap3_has_iva()) {
220 cpu_name
= "OMAP3525";
221 } else if (omap3_has_sgx()) {
222 cpu_name
= "OMAP3515";
224 cpu_name
= "OMAP3503";
227 sprintf(soc_name
, "%s", cpu_name
);
229 /* Print verbose information */
230 pr_info("%s %s (", soc_name
, soc_rev
);
232 OMAP3_SHOW_FEATURE(l2cache
);
233 OMAP3_SHOW_FEATURE(iva
);
234 OMAP3_SHOW_FEATURE(sgx
);
235 OMAP3_SHOW_FEATURE(neon
);
236 OMAP3_SHOW_FEATURE(isp
);
237 OMAP3_SHOW_FEATURE(192mhz_clk
);
242 #define OMAP3_CHECK_FEATURE(status,feat) \
243 if (((status & OMAP3_ ##feat## _MASK) \
244 >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \
245 omap_features |= OMAP3_HAS_ ##feat; \
248 void __init
omap3xxx_check_features(void)
254 status
= omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS
);
256 OMAP3_CHECK_FEATURE(status
, L2CACHE
);
257 OMAP3_CHECK_FEATURE(status
, IVA
);
258 OMAP3_CHECK_FEATURE(status
, SGX
);
259 OMAP3_CHECK_FEATURE(status
, NEON
);
260 OMAP3_CHECK_FEATURE(status
, ISP
);
261 if (cpu_is_omap3630())
262 omap_features
|= OMAP3_HAS_192MHZ_CLK
;
263 if (cpu_is_omap3430() || cpu_is_omap3630())
264 omap_features
|= OMAP3_HAS_IO_WAKEUP
;
265 if (cpu_is_omap3630() || omap_rev() == OMAP3430_REV_ES3_1
||
266 omap_rev() == OMAP3430_REV_ES3_1_2
)
267 omap_features
|= OMAP3_HAS_IO_CHAIN_CTRL
;
269 omap_features
|= OMAP3_HAS_SDRC
;
273 * - The am35x Chip ID register has bits 12, 7:5, and 3:2 marked as
274 * reserved and therefore return 0 when read. Unfortunately,
275 * OMAP3_CHECK_FEATURE() will interpret some of those zeroes to
276 * mean that a feature is present even though it isn't so clear
277 * the incorrectly set feature bits.
280 omap_features
&= ~(OMAP3_HAS_IVA
| OMAP3_HAS_ISP
);
283 * TODO: Get additional info (where applicable)
284 * e.g. Size of L2 cache.
290 void __init
omap4xxx_check_features(void)
295 (read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1
) >> 16) & 0x03;
297 if (si_type
== OMAP4_SILICON_TYPE_PERFORMANCE
)
298 omap_features
= OMAP4_HAS_PERF_SILICON
;
301 void __init
ti81xx_check_features(void)
303 omap_features
= OMAP3_HAS_NEON
;
307 void __init
am33xx_check_features(void)
311 omap_features
= OMAP3_HAS_NEON
;
313 status
= omap_ctrl_readl(AM33XX_DEV_FEATURE
);
314 if (status
& AM33XX_SGX_MASK
)
315 omap_features
|= OMAP3_HAS_SGX
;
320 void __init
omap3xxx_check_revision(void)
328 * We cannot access revision registers on ES1.0.
329 * If the processor type is Cortex-A8 and the revision is 0x0
330 * it means its Cortex r0p0 which is 3430 ES1.0.
332 cpuid
= read_cpuid_id();
333 if ((((cpuid
>> 4) & 0xfff) == 0xc08) && ((cpuid
& 0xf) == 0x0)) {
334 omap_revision
= OMAP3430_REV_ES1_0
;
340 * Detection for 34xx ES2.0 and above can be done with just
341 * hawkeye and rev. See TRM 1.5.2 Device Identification.
342 * Note that rev does not map directly to our defined processor
343 * revision numbers as ES1.0 uses value 0.
345 idcode
= read_tap_reg(OMAP_TAP_IDCODE
);
346 hawkeye
= (idcode
>> 12) & 0xffff;
347 rev
= (idcode
>> 28) & 0xff;
351 /* Handle 34xx/35xx devices */
353 case 0: /* Take care of early samples */
355 omap_revision
= OMAP3430_REV_ES2_0
;
359 omap_revision
= OMAP3430_REV_ES2_1
;
363 omap_revision
= OMAP3430_REV_ES3_0
;
367 omap_revision
= OMAP3430_REV_ES3_1
;
373 /* Use the latest known revision as default */
374 omap_revision
= OMAP3430_REV_ES3_1_2
;
380 * Handle OMAP/AM 3505/3517 devices
382 * Set the device to be OMAP3517 here. Actual device
383 * is identified later based on the features.
387 omap_revision
= AM35XX_REV_ES1_0
;
393 omap_revision
= AM35XX_REV_ES1_1
;
398 /* Handle 36xx devices */
401 case 0: /* Take care of early samples */
402 omap_revision
= OMAP3630_REV_ES1_0
;
406 omap_revision
= OMAP3630_REV_ES1_1
;
412 omap_revision
= OMAP3630_REV_ES1_2
;
419 omap_revision
= TI8168_REV_ES1_0
;
423 omap_revision
= TI8168_REV_ES1_1
;
427 omap_revision
= TI8168_REV_ES2_0
;
433 omap_revision
= TI8168_REV_ES2_1
;
440 omap_revision
= AM335X_REV_ES1_0
;
444 omap_revision
= AM335X_REV_ES2_0
;
450 omap_revision
= AM335X_REV_ES2_1
;
456 omap_revision
= AM437X_REV_ES1_0
;
464 omap_revision
= TI8148_REV_ES1_0
;
468 omap_revision
= TI8148_REV_ES2_0
;
474 omap_revision
= TI8148_REV_ES2_1
;
480 /* Unknown default to latest silicon rev as default */
481 omap_revision
= OMAP3630_REV_ES1_2
;
483 pr_warn("Warning: unknown chip type; assuming OMAP3630ES1.2\n");
485 sprintf(soc_rev
, "ES%s", cpu_rev
);
488 void __init
omap4xxx_check_revision(void)
495 * The IC rev detection is done with hawkeye and rev.
496 * Note that rev does not map directly to defined processor
497 * revision numbers as ES1.0 uses value 0.
499 idcode
= read_tap_reg(OMAP_TAP_IDCODE
);
500 hawkeye
= (idcode
>> 12) & 0xffff;
501 rev
= (idcode
>> 28) & 0xf;
504 * Few initial 4430 ES2.0 samples IDCODE is same as ES1.0
505 * Use ARM register to detect the correct ES version
507 if (!rev
&& (hawkeye
!= 0xb94e) && (hawkeye
!= 0xb975)) {
508 idcode
= read_cpuid_id();
509 rev
= (idcode
& 0xf) - 1;
516 omap_revision
= OMAP4430_REV_ES1_0
;
520 omap_revision
= OMAP4430_REV_ES2_0
;
526 omap_revision
= OMAP4430_REV_ES2_1
;
529 omap_revision
= OMAP4430_REV_ES2_2
;
533 omap_revision
= OMAP4430_REV_ES2_3
;
539 omap_revision
= OMAP4460_REV_ES1_0
;
543 omap_revision
= OMAP4460_REV_ES1_1
;
551 omap_revision
= OMAP4470_REV_ES1_0
;
556 /* Unknown default to latest silicon rev as default */
557 omap_revision
= OMAP4430_REV_ES2_3
;
560 sprintf(soc_name
, "OMAP%04x", omap_rev() >> 16);
561 sprintf(soc_rev
, "ES%d.%d", (omap_rev() >> 12) & 0xf,
562 (omap_rev() >> 8) & 0xf);
563 pr_info("%s %s\n", soc_name
, soc_rev
);
566 void __init
omap5xxx_check_revision(void)
572 idcode
= read_tap_reg(OMAP_TAP_IDCODE
);
573 hawkeye
= (idcode
>> 12) & 0xffff;
574 rev
= (idcode
>> 28) & 0xff;
579 omap_revision
= OMAP5430_REV_ES1_0
;
583 omap_revision
= OMAP5430_REV_ES2_0
;
590 omap_revision
= OMAP5432_REV_ES1_0
;
594 omap_revision
= OMAP5432_REV_ES2_0
;
599 /* Unknown default to latest silicon rev as default*/
600 omap_revision
= OMAP5430_REV_ES2_0
;
603 sprintf(soc_name
, "OMAP%04x", omap_rev() >> 16);
604 sprintf(soc_rev
, "ES%d.0", (omap_rev() >> 12) & 0xf);
606 pr_info("%s %s\n", soc_name
, soc_rev
);
610 * Set up things for map_io and processor detection later on. Gets called
611 * pretty much first thing from board init. For multi-omap, this gets
612 * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to
613 * detect the exact revision later on in omap2_detect_revision() once map_io
616 void __init
omap2_set_globals_tap(u32
class, void __iomem
*tap
)
618 omap_revision
= class;
621 /* XXX What is this intended to do? */
622 if (cpu_is_omap34xx())
623 tap_prod_id
= 0x0210;
625 tap_prod_id
= 0x0208;
628 #ifdef CONFIG_SOC_BUS
630 static const char * const omap_types
[] = {
631 [OMAP2_DEVICE_TYPE_TEST
] = "TST",
632 [OMAP2_DEVICE_TYPE_EMU
] = "EMU",
633 [OMAP2_DEVICE_TYPE_SEC
] = "HS",
634 [OMAP2_DEVICE_TYPE_GP
] = "GP",
635 [OMAP2_DEVICE_TYPE_BAD
] = "BAD",
638 static const char * __init
omap_get_family(void)
640 if (cpu_is_omap24xx())
641 return kasprintf(GFP_KERNEL
, "OMAP2");
642 else if (cpu_is_omap34xx())
643 return kasprintf(GFP_KERNEL
, "OMAP3");
644 else if (cpu_is_omap44xx())
645 return kasprintf(GFP_KERNEL
, "OMAP4");
646 else if (soc_is_omap54xx())
647 return kasprintf(GFP_KERNEL
, "OMAP5");
649 return kasprintf(GFP_KERNEL
, "Unknown");
652 static ssize_t
omap_get_type(struct device
*dev
,
653 struct device_attribute
*attr
,
656 return sprintf(buf
, "%s\n", omap_types
[omap_type()]);
659 static struct device_attribute omap_soc_attr
=
660 __ATTR(type
, S_IRUGO
, omap_get_type
, NULL
);
662 void __init
omap_soc_device_init(void)
664 struct device
*parent
;
665 struct soc_device
*soc_dev
;
666 struct soc_device_attribute
*soc_dev_attr
;
668 soc_dev_attr
= kzalloc(sizeof(*soc_dev_attr
), GFP_KERNEL
);
672 soc_dev_attr
->machine
= soc_name
;
673 soc_dev_attr
->family
= omap_get_family();
674 soc_dev_attr
->revision
= soc_rev
;
676 soc_dev
= soc_device_register(soc_dev_attr
);
677 if (IS_ERR(soc_dev
)) {
682 parent
= soc_device_to_device(soc_dev
);
683 device_create_file(parent
, &omap_soc_attr
);
685 #endif /* CONFIG_SOC_BUS */