Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 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 | * |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 9 | * Copyright (C) 2009-11 Texas Instruments |
Santosh Shilimkar | 4416907 | 2009-05-28 14:16:04 -0700 | [diff] [blame] | 10 | * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> |
| 11 | * |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 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 | |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 17 | #include <linux/module.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/init.h> |
Russell King | fced80c | 2008-09-06 12:10:45 +0100 | [diff] [blame] | 20 | #include <linux/io.h> |
Linus Walleij | de26804 | 2013-09-05 09:29:18 +0200 | [diff] [blame] | 21 | #include <linux/random.h> |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 22 | #include <linux/slab.h> |
| 23 | |
| 24 | #ifdef CONFIG_SOC_BUS |
| 25 | #include <linux/sys_soc.h> |
| 26 | #endif |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 27 | |
Russell King | 0ba8b9b | 2008-08-10 18:08:10 +0100 | [diff] [blame] | 28 | #include <asm/cputype.h> |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 29 | |
Tony Lindgren | 4e65331 | 2011-11-10 22:45:17 +0100 | [diff] [blame] | 30 | #include "common.h" |
Syed Mohammed Khasim | 72d0f1c | 2006-12-06 17:14:05 -0800 | [diff] [blame] | 31 | |
Tony Lindgren | 4952af4 | 2012-09-19 10:33:40 -0700 | [diff] [blame] | 32 | #include "id.h" |
Kan-Ru Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 33 | |
Tony Lindgren | dbc0416 | 2012-08-31 10:59:07 -0700 | [diff] [blame] | 34 | #include "soc.h" |
Paul Walmsley | 4814ced | 2010-10-08 11:40:20 -0600 | [diff] [blame] | 35 | #include "control.h" |
| 36 | |
Ivan Khoronzhuk | 42a1cc9 | 2012-11-14 12:10:37 -0800 | [diff] [blame] | 37 | #define OMAP4_SILICON_TYPE_STANDARD 0x01 |
| 38 | #define OMAP4_SILICON_TYPE_PERFORMANCE 0x02 |
| 39 | |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 40 | #define OMAP_SOC_MAX_NAME_LENGTH 16 |
| 41 | |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 42 | static unsigned int omap_revision; |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 43 | static char soc_name[OMAP_SOC_MAX_NAME_LENGTH]; |
| 44 | static char soc_rev[OMAP_SOC_MAX_NAME_LENGTH]; |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 45 | u32 omap_features; |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 46 | |
| 47 | unsigned int omap_rev(void) |
| 48 | { |
| 49 | return omap_revision; |
| 50 | } |
| 51 | EXPORT_SYMBOL(omap_rev); |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 52 | |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 53 | int omap_type(void) |
| 54 | { |
Tero Kristo | 23d240d | 2015-02-09 16:17:38 +0200 | [diff] [blame] | 55 | static u32 val = OMAP2_DEVICETYPE_MASK; |
| 56 | |
| 57 | if (val < OMAP2_DEVICETYPE_MASK) |
| 58 | return val; |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 59 | |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 60 | if (soc_is_omap24xx()) { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 61 | val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS); |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 62 | } else if (soc_is_ti81xx()) { |
Tony Lindgren | e226ebe | 2015-01-14 17:37:15 -0800 | [diff] [blame] | 63 | val = omap_ctrl_readl(TI81XX_CONTROL_STATUS); |
Afzal Mohammed | 49cc485 | 2013-05-27 20:06:33 +0530 | [diff] [blame] | 64 | } else if (soc_is_am33xx() || soc_is_am43xx()) { |
Afzal Mohammed | fb3cfb1 | 2012-03-05 16:11:01 -0800 | [diff] [blame] | 65 | val = omap_ctrl_readl(AM33XX_CONTROL_STATUS); |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 66 | } else if (soc_is_omap34xx()) { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 67 | val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS); |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 68 | } else if (soc_is_omap44xx()) { |
Santosh Shilimkar | dcf5ef3 | 2010-09-27 14:02:58 -0600 | [diff] [blame] | 69 | val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS); |
R Sricharan | 6852215 | 2013-02-06 20:25:40 +0530 | [diff] [blame] | 70 | } else if (soc_is_omap54xx() || soc_is_dra7xx()) { |
R Sricharan | b13e80a | 2012-04-19 17:42:19 +0530 | [diff] [blame] | 71 | val = omap_ctrl_readl(OMAP5XXX_CONTROL_STATUS); |
| 72 | val &= OMAP5_DEVICETYPE_MASK; |
| 73 | val >>= 6; |
| 74 | goto out; |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 75 | } else { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 76 | pr_err("Cannot detect omap type!\n"); |
| 77 | goto out; |
| 78 | } |
| 79 | |
| 80 | val &= OMAP2_DEVICETYPE_MASK; |
| 81 | val >>= 8; |
| 82 | |
| 83 | out: |
| 84 | return val; |
| 85 | } |
| 86 | EXPORT_SYMBOL(omap_type); |
| 87 | |
| 88 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 89 | /*----------------------------------------------------------------------------*/ |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 90 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 91 | #define OMAP_TAP_IDCODE 0x0204 |
| 92 | #define OMAP_TAP_DIE_ID_0 0x0218 |
| 93 | #define OMAP_TAP_DIE_ID_1 0x021C |
| 94 | #define OMAP_TAP_DIE_ID_2 0x0220 |
| 95 | #define OMAP_TAP_DIE_ID_3 0x0224 |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 96 | |
Andy Green | b235e00 | 2011-03-12 22:50:54 +0000 | [diff] [blame] | 97 | #define OMAP_TAP_DIE_ID_44XX_0 0x0200 |
| 98 | #define OMAP_TAP_DIE_ID_44XX_1 0x0208 |
| 99 | #define OMAP_TAP_DIE_ID_44XX_2 0x020c |
| 100 | #define OMAP_TAP_DIE_ID_44XX_3 0x0210 |
| 101 | |
Victor Kamensky | edfaf05 | 2014-04-15 20:37:46 +0300 | [diff] [blame] | 102 | #define read_tap_reg(reg) readl_relaxed(tap_base + (reg)) |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 103 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 104 | struct omap_id { |
| 105 | u16 hawkeye; /* Silicon type (Hawkeye id) */ |
| 106 | u8 dev; /* Device type from production_id reg */ |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 107 | u32 type; /* Combined type id copied to omap_revision */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 108 | }; |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 109 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 110 | /* Register values to detect the OMAP version */ |
| 111 | static struct omap_id omap_ids[] __initdata = { |
| 112 | { .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200024 }, |
| 113 | { .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201024 }, |
| 114 | { .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202024 }, |
| 115 | { .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220024 }, |
| 116 | { .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230024 }, |
| 117 | { .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300024 }, |
| 118 | }; |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 119 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 120 | static void __iomem *tap_base; |
| 121 | static u16 tap_prod_id; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 122 | |
Kan-Ru Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 123 | void omap_get_die_id(struct omap_die_id *odi) |
| 124 | { |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 125 | if (soc_is_omap44xx() || soc_is_omap54xx() || soc_is_dra7xx()) { |
Andy Green | b235e00 | 2011-03-12 22:50:54 +0000 | [diff] [blame] | 126 | odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_0); |
| 127 | odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_1); |
| 128 | odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_2); |
| 129 | odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_3); |
| 130 | |
| 131 | return; |
| 132 | } |
Kan-Ru Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 133 | odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0); |
| 134 | odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1); |
| 135 | odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2); |
| 136 | odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3); |
| 137 | } |
| 138 | |
Linus Walleij | de26804 | 2013-09-05 09:29:18 +0200 | [diff] [blame] | 139 | static int __init omap_feed_randpool(void) |
| 140 | { |
| 141 | struct omap_die_id odi; |
| 142 | |
| 143 | /* Throw the die ID into the entropy pool at boot */ |
| 144 | omap_get_die_id(&odi); |
| 145 | add_device_randomness(&odi, sizeof(odi)); |
| 146 | return 0; |
| 147 | } |
| 148 | omap_device_initcall(omap_feed_randpool); |
| 149 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 150 | void __init omap2xxx_check_revision(void) |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 151 | { |
| 152 | int i, j; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 153 | u32 idcode, prod_id; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 154 | u16 hawkeye; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 155 | u8 dev_type, rev; |
Kan-Ru Chen | c46732b | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 156 | struct omap_die_id odi; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 157 | |
| 158 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 159 | prod_id = read_tap_reg(tap_prod_id); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 160 | hawkeye = (idcode >> 12) & 0xffff; |
| 161 | rev = (idcode >> 28) & 0x0f; |
| 162 | dev_type = (prod_id >> 16) & 0x0f; |
Kan-Ru Chen | c46732b | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 163 | omap_get_die_id(&odi); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 164 | |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 165 | pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n", |
| 166 | idcode, rev, hawkeye, (idcode >> 1) & 0x7ff); |
Kan-Ru Chen | c46732b | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 167 | pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n", odi.id_0); |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 168 | pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n", |
Kan-Ru Chen | c46732b | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 169 | odi.id_1, (odi.id_1 >> 28) & 0xf); |
| 170 | pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n", odi.id_2); |
| 171 | pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n", odi.id_3); |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 172 | pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n", |
| 173 | prod_id, dev_type); |
| 174 | |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 175 | /* Check hawkeye ids */ |
| 176 | for (i = 0; i < ARRAY_SIZE(omap_ids); i++) { |
| 177 | if (hawkeye == omap_ids[i].hawkeye) |
| 178 | break; |
| 179 | } |
| 180 | |
| 181 | if (i == ARRAY_SIZE(omap_ids)) { |
| 182 | printk(KERN_ERR "Unknown OMAP CPU id\n"); |
| 183 | return; |
| 184 | } |
| 185 | |
| 186 | for (j = i; j < ARRAY_SIZE(omap_ids); j++) { |
| 187 | if (dev_type == omap_ids[j].dev) |
| 188 | break; |
| 189 | } |
| 190 | |
| 191 | if (j == ARRAY_SIZE(omap_ids)) { |
Paul Walmsley | 7852ec0 | 2012-07-26 00:54:26 -0600 | [diff] [blame] | 192 | pr_err("Unknown OMAP device type. Handling it as OMAP%04x\n", |
| 193 | omap_ids[i].type >> 16); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 194 | j = i; |
| 195 | } |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 196 | |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 197 | sprintf(soc_name, "OMAP%04x", omap_rev() >> 16); |
| 198 | sprintf(soc_rev, "ES%x", (omap_rev() >> 12) & 0xf); |
| 199 | |
| 200 | pr_info("%s", soc_name); |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 201 | if ((omap_rev() >> 8) & 0x0f) |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 202 | pr_info("%s", soc_rev); |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 203 | pr_info("\n"); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 204 | } |
| 205 | |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 206 | #define OMAP3_SHOW_FEATURE(feat) \ |
| 207 | if (omap3_has_ ##feat()) \ |
| 208 | printk(#feat" "); |
| 209 | |
| 210 | static void __init omap3_cpuinfo(void) |
| 211 | { |
| 212 | const char *cpu_name; |
| 213 | |
| 214 | /* |
| 215 | * OMAP3430 and OMAP3530 are assumed to be same. |
| 216 | * |
| 217 | * OMAP3525, OMAP3515 and OMAP3503 can be detected only based |
| 218 | * on available features. Upon detection, update the CPU id |
| 219 | * and CPU class bits. |
| 220 | */ |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 221 | if (soc_is_omap3630()) { |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 222 | cpu_name = "OMAP3630"; |
Kevin Hilman | 68a88b9 | 2012-04-30 16:37:10 -0700 | [diff] [blame] | 223 | } else if (soc_is_am35xx()) { |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 224 | cpu_name = (omap3_has_sgx()) ? "AM3517" : "AM3505"; |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 225 | } else if (soc_is_ti816x()) { |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 226 | cpu_name = "TI816X"; |
Vaibhav Hiremath | 971b8a9 | 2012-07-05 08:05:15 -0700 | [diff] [blame] | 227 | } else if (soc_is_am335x()) { |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 228 | cpu_name = "AM335X"; |
Afzal Mohammed | c04bbaa | 2013-05-27 20:06:01 +0530 | [diff] [blame] | 229 | } else if (soc_is_am437x()) { |
| 230 | cpu_name = "AM437x"; |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 231 | } else if (soc_is_ti814x()) { |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 232 | cpu_name = "TI814X"; |
| 233 | } else if (omap3_has_iva() && omap3_has_sgx()) { |
| 234 | /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */ |
| 235 | cpu_name = "OMAP3430/3530"; |
| 236 | } else if (omap3_has_iva()) { |
| 237 | cpu_name = "OMAP3525"; |
| 238 | } else if (omap3_has_sgx()) { |
| 239 | cpu_name = "OMAP3515"; |
| 240 | } else { |
| 241 | cpu_name = "OMAP3503"; |
| 242 | } |
| 243 | |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 244 | sprintf(soc_name, "%s", cpu_name); |
| 245 | |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 246 | /* Print verbose information */ |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 247 | pr_info("%s %s (", soc_name, soc_rev); |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 248 | |
| 249 | OMAP3_SHOW_FEATURE(l2cache); |
| 250 | OMAP3_SHOW_FEATURE(iva); |
| 251 | OMAP3_SHOW_FEATURE(sgx); |
| 252 | OMAP3_SHOW_FEATURE(neon); |
| 253 | OMAP3_SHOW_FEATURE(isp); |
| 254 | OMAP3_SHOW_FEATURE(192mhz_clk); |
| 255 | |
| 256 | printk(")\n"); |
| 257 | } |
| 258 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 259 | #define OMAP3_CHECK_FEATURE(status,feat) \ |
| 260 | if (((status & OMAP3_ ##feat## _MASK) \ |
| 261 | >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \ |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 262 | omap_features |= OMAP3_HAS_ ##feat; \ |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 263 | } |
| 264 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 265 | void __init omap3xxx_check_features(void) |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 266 | { |
| 267 | u32 status; |
| 268 | |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 269 | omap_features = 0; |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 270 | |
| 271 | status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS); |
| 272 | |
| 273 | OMAP3_CHECK_FEATURE(status, L2CACHE); |
| 274 | OMAP3_CHECK_FEATURE(status, IVA); |
| 275 | OMAP3_CHECK_FEATURE(status, SGX); |
| 276 | OMAP3_CHECK_FEATURE(status, NEON); |
| 277 | OMAP3_CHECK_FEATURE(status, ISP); |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 278 | if (soc_is_omap3630()) |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 279 | omap_features |= OMAP3_HAS_192MHZ_CLK; |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 280 | if (soc_is_omap3430() || soc_is_omap3630()) |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 281 | omap_features |= OMAP3_HAS_IO_WAKEUP; |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 282 | if (soc_is_omap3630() || omap_rev() == OMAP3430_REV_ES3_1 || |
Paul Walmsley | b02b917 | 2011-10-06 17:18:45 -0600 | [diff] [blame] | 283 | omap_rev() == OMAP3430_REV_ES3_1_2) |
| 284 | omap_features |= OMAP3_HAS_IO_CHAIN_CTRL; |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 285 | |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 286 | omap_features |= OMAP3_HAS_SDRC; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 287 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 288 | /* |
Mark A. Greer | 1ce0299 | 2012-04-30 16:57:09 -0700 | [diff] [blame] | 289 | * am35x fixups: |
| 290 | * - The am35x Chip ID register has bits 12, 7:5, and 3:2 marked as |
| 291 | * reserved and therefore return 0 when read. Unfortunately, |
| 292 | * OMAP3_CHECK_FEATURE() will interpret some of those zeroes to |
| 293 | * mean that a feature is present even though it isn't so clear |
| 294 | * the incorrectly set feature bits. |
| 295 | */ |
| 296 | if (soc_is_am35xx()) |
| 297 | omap_features &= ~(OMAP3_HAS_IVA | OMAP3_HAS_ISP); |
| 298 | |
| 299 | /* |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 300 | * TODO: Get additional info (where applicable) |
| 301 | * e.g. Size of L2 cache. |
| 302 | */ |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 303 | |
| 304 | omap3_cpuinfo(); |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 305 | } |
| 306 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 307 | void __init omap4xxx_check_features(void) |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 308 | { |
| 309 | u32 si_type; |
| 310 | |
Ivan Khoronzhuk | 42a1cc9 | 2012-11-14 12:10:37 -0800 | [diff] [blame] | 311 | si_type = |
| 312 | (read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1) >> 16) & 0x03; |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 313 | |
Ivan Khoronzhuk | 42a1cc9 | 2012-11-14 12:10:37 -0800 | [diff] [blame] | 314 | if (si_type == OMAP4_SILICON_TYPE_PERFORMANCE) |
| 315 | omap_features = OMAP4_HAS_PERF_SILICON; |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 316 | } |
| 317 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 318 | void __init ti81xx_check_features(void) |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 319 | { |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 320 | omap_features = OMAP3_HAS_NEON; |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 321 | omap3_cpuinfo(); |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 322 | } |
| 323 | |
Vaibhav Hiremath | 7bcad17 | 2013-05-17 15:43:41 +0530 | [diff] [blame] | 324 | void __init am33xx_check_features(void) |
| 325 | { |
| 326 | u32 status; |
| 327 | |
| 328 | omap_features = OMAP3_HAS_NEON; |
| 329 | |
| 330 | status = omap_ctrl_readl(AM33XX_DEV_FEATURE); |
| 331 | if (status & AM33XX_SGX_MASK) |
| 332 | omap_features |= OMAP3_HAS_SGX; |
| 333 | |
| 334 | omap3_cpuinfo(); |
| 335 | } |
| 336 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 337 | void __init omap3xxx_check_revision(void) |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 338 | { |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 339 | const char *cpu_rev; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 340 | u32 cpuid, idcode; |
| 341 | u16 hawkeye; |
| 342 | u8 rev; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 343 | |
| 344 | /* |
| 345 | * We cannot access revision registers on ES1.0. |
| 346 | * If the processor type is Cortex-A8 and the revision is 0x0 |
| 347 | * it means its Cortex r0p0 which is 3430 ES1.0. |
| 348 | */ |
Uwe Kleine-König | ac52e83 | 2013-01-30 17:38:21 +0100 | [diff] [blame] | 349 | cpuid = read_cpuid_id(); |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 350 | if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) { |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 351 | omap_revision = OMAP3430_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 352 | cpu_rev = "1.0"; |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 353 | return; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | /* |
| 357 | * Detection for 34xx ES2.0 and above can be done with just |
| 358 | * hawkeye and rev. See TRM 1.5.2 Device Identification. |
| 359 | * Note that rev does not map directly to our defined processor |
| 360 | * revision numbers as ES1.0 uses value 0. |
| 361 | */ |
| 362 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 363 | hawkeye = (idcode >> 12) & 0xffff; |
| 364 | rev = (idcode >> 28) & 0xff; |
| 365 | |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 366 | switch (hawkeye) { |
| 367 | case 0xb7ae: |
| 368 | /* Handle 34xx/35xx devices */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 369 | switch (rev) { |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 370 | case 0: /* Take care of early samples */ |
| 371 | case 1: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 372 | omap_revision = OMAP3430_REV_ES2_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 373 | cpu_rev = "2.0"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 374 | break; |
| 375 | case 2: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 376 | omap_revision = OMAP3430_REV_ES2_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 377 | cpu_rev = "2.1"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 378 | break; |
| 379 | case 3: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 380 | omap_revision = OMAP3430_REV_ES3_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 381 | cpu_rev = "3.0"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 382 | break; |
Tony Lindgren | 187e688 | 2009-01-29 08:57:16 -0800 | [diff] [blame] | 383 | case 4: |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 384 | omap_revision = OMAP3430_REV_ES3_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 385 | cpu_rev = "3.1"; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 386 | break; |
| 387 | case 7: |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 388 | /* FALLTHROUGH */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 389 | default: |
| 390 | /* Use the latest known revision as default */ |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 391 | omap_revision = OMAP3430_REV_ES3_1_2; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 392 | cpu_rev = "3.1.2"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 393 | } |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 394 | break; |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 395 | case 0xb868: |
Paul Walmsley | 1f1b035 | 2011-09-13 19:52:13 -0600 | [diff] [blame] | 396 | /* |
| 397 | * Handle OMAP/AM 3505/3517 devices |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 398 | * |
Paul Walmsley | 1f1b035 | 2011-09-13 19:52:13 -0600 | [diff] [blame] | 399 | * Set the device to be OMAP3517 here. Actual device |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 400 | * is identified later based on the features. |
| 401 | */ |
Paul Walmsley | 9ed2ba7 | 2011-09-13 19:52:14 -0600 | [diff] [blame] | 402 | switch (rev) { |
| 403 | case 0: |
Kevin Hilman | 68a88b9 | 2012-04-30 16:37:10 -0700 | [diff] [blame] | 404 | omap_revision = AM35XX_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 405 | cpu_rev = "1.0"; |
Paul Walmsley | 9ed2ba7 | 2011-09-13 19:52:14 -0600 | [diff] [blame] | 406 | break; |
| 407 | case 1: |
| 408 | /* FALLTHROUGH */ |
| 409 | default: |
Kevin Hilman | 68a88b9 | 2012-04-30 16:37:10 -0700 | [diff] [blame] | 410 | omap_revision = AM35XX_REV_ES1_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 411 | cpu_rev = "1.1"; |
Paul Walmsley | 9ed2ba7 | 2011-09-13 19:52:14 -0600 | [diff] [blame] | 412 | } |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 413 | break; |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 414 | case 0xb891: |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 415 | /* Handle 36xx devices */ |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 416 | |
| 417 | switch(rev) { |
| 418 | case 0: /* Take care of early samples */ |
| 419 | omap_revision = OMAP3630_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 420 | cpu_rev = "1.0"; |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 421 | break; |
| 422 | case 1: |
| 423 | omap_revision = OMAP3630_REV_ES1_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 424 | cpu_rev = "1.1"; |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 425 | break; |
| 426 | case 2: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 427 | /* FALLTHROUGH */ |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 428 | default: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 429 | omap_revision = OMAP3630_REV_ES1_2; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 430 | cpu_rev = "1.2"; |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 431 | } |
Nishanth Menon | 77c0870 | 2010-08-16 09:21:19 +0300 | [diff] [blame] | 432 | break; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 433 | case 0xb81e: |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 434 | switch (rev) { |
| 435 | case 0: |
| 436 | omap_revision = TI8168_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 437 | cpu_rev = "1.0"; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 438 | break; |
| 439 | case 1: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 440 | omap_revision = TI8168_REV_ES1_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 441 | cpu_rev = "1.1"; |
Paul Walmsley | 3b32b7d | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 442 | break; |
Aida Mynzhasova | a5f93d9 | 2013-05-30 14:21:01 +0400 | [diff] [blame] | 443 | case 2: |
| 444 | omap_revision = TI8168_REV_ES2_0; |
| 445 | cpu_rev = "2.0"; |
| 446 | break; |
| 447 | case 3: |
| 448 | /* FALLTHROUGH */ |
| 449 | default: |
| 450 | omap_revision = TI8168_REV_ES2_1; |
| 451 | cpu_rev = "2.1"; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 452 | } |
| 453 | break; |
Afzal Mohammed | 1e6cb14 | 2011-12-13 10:46:43 -0800 | [diff] [blame] | 454 | case 0xb944: |
AnilKumar Ch | 5af044f | 2013-02-01 15:58:22 +0530 | [diff] [blame] | 455 | switch (rev) { |
| 456 | case 0: |
| 457 | omap_revision = AM335X_REV_ES1_0; |
| 458 | cpu_rev = "1.0"; |
| 459 | break; |
| 460 | case 1: |
AnilKumar Ch | 5af044f | 2013-02-01 15:58:22 +0530 | [diff] [blame] | 461 | omap_revision = AM335X_REV_ES2_0; |
| 462 | cpu_rev = "2.0"; |
| 463 | break; |
Vaibhav Hiremath | d240ef3 | 2013-05-08 16:48:02 -0700 | [diff] [blame] | 464 | case 2: |
| 465 | /* FALLTHROUGH */ |
| 466 | default: |
| 467 | omap_revision = AM335X_REV_ES2_1; |
| 468 | cpu_rev = "2.1"; |
| 469 | break; |
AnilKumar Ch | 5af044f | 2013-02-01 15:58:22 +0530 | [diff] [blame] | 470 | } |
Vaibhav Hiremath | c2d1355 | 2012-01-23 13:26:47 +0530 | [diff] [blame] | 471 | break; |
Afzal Mohammed | c04bbaa | 2013-05-27 20:06:01 +0530 | [diff] [blame] | 472 | case 0xb98c: |
Lokesh Vutla | 4a2ed4c | 2014-02-07 15:51:24 +0530 | [diff] [blame] | 473 | switch (rev) { |
| 474 | case 0: |
| 475 | omap_revision = AM437X_REV_ES1_0; |
| 476 | cpu_rev = "1.0"; |
| 477 | break; |
| 478 | case 1: |
Lokesh Vutla | 4a2ed4c | 2014-02-07 15:51:24 +0530 | [diff] [blame] | 479 | omap_revision = AM437X_REV_ES1_1; |
| 480 | cpu_rev = "1.1"; |
| 481 | break; |
Lokesh Vutla | 4fdd54f | 2014-11-28 09:02:07 +0530 | [diff] [blame] | 482 | case 2: |
| 483 | /* FALLTHROUGH */ |
| 484 | default: |
| 485 | omap_revision = AM437X_REV_ES1_2; |
| 486 | cpu_rev = "1.2"; |
| 487 | break; |
Lokesh Vutla | 4a2ed4c | 2014-02-07 15:51:24 +0530 | [diff] [blame] | 488 | } |
Afzal Mohammed | c04bbaa | 2013-05-27 20:06:01 +0530 | [diff] [blame] | 489 | break; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 490 | case 0xb8f2: |
Tony Lindgren | 68b813b | 2015-12-22 15:39:29 -0800 | [diff] [blame] | 491 | case 0xb968: |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 492 | switch (rev) { |
| 493 | case 0: |
| 494 | /* FALLTHROUGH */ |
| 495 | case 1: |
| 496 | omap_revision = TI8148_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 497 | cpu_rev = "1.0"; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 498 | break; |
| 499 | case 2: |
| 500 | omap_revision = TI8148_REV_ES2_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 501 | cpu_rev = "2.0"; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 502 | break; |
| 503 | case 3: |
| 504 | /* FALLTHROUGH */ |
| 505 | default: |
| 506 | omap_revision = TI8148_REV_ES2_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 507 | cpu_rev = "2.1"; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 508 | break; |
| 509 | } |
Afzal Mohammed | 1e6cb14 | 2011-12-13 10:46:43 -0800 | [diff] [blame] | 510 | break; |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 511 | default: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 512 | /* Unknown default to latest silicon rev as default */ |
Paul Walmsley | 3b32b7d | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 513 | omap_revision = OMAP3630_REV_ES1_2; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 514 | cpu_rev = "1.2"; |
Tony Lindgren | 68b813b | 2015-12-22 15:39:29 -0800 | [diff] [blame] | 515 | pr_warn("Warning: unknown chip type: hawkeye %04x, assuming OMAP3630ES1.2\n", |
| 516 | hawkeye); |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 517 | } |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 518 | sprintf(soc_rev, "ES%s", cpu_rev); |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 519 | } |
| 520 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 521 | void __init omap4xxx_check_revision(void) |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 522 | { |
| 523 | u32 idcode; |
| 524 | u16 hawkeye; |
| 525 | u8 rev; |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 526 | |
| 527 | /* |
| 528 | * The IC rev detection is done with hawkeye and rev. |
| 529 | * Note that rev does not map directly to defined processor |
| 530 | * revision numbers as ES1.0 uses value 0. |
| 531 | */ |
| 532 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 533 | hawkeye = (idcode >> 12) & 0xffff; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 534 | rev = (idcode >> 28) & 0xf; |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 535 | |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 536 | /* |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 537 | * Few initial 4430 ES2.0 samples IDCODE is same as ES1.0 |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 538 | * Use ARM register to detect the correct ES version |
| 539 | */ |
Leonid Iziumtsev | ec023e4 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 540 | if (!rev && (hawkeye != 0xb94e) && (hawkeye != 0xb975)) { |
Uwe Kleine-König | ac52e83 | 2013-01-30 17:38:21 +0100 | [diff] [blame] | 541 | idcode = read_cpuid_id(); |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 542 | rev = (idcode & 0xf) - 1; |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 543 | } |
| 544 | |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 545 | switch (hawkeye) { |
| 546 | case 0xb852: |
| 547 | switch (rev) { |
| 548 | case 0: |
| 549 | omap_revision = OMAP4430_REV_ES1_0; |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 550 | break; |
| 551 | case 1: |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 552 | default: |
| 553 | omap_revision = OMAP4430_REV_ES2_0; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 554 | } |
| 555 | break; |
| 556 | case 0xb95c: |
| 557 | switch (rev) { |
| 558 | case 3: |
| 559 | omap_revision = OMAP4430_REV_ES2_1; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 560 | break; |
| 561 | case 4: |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 562 | omap_revision = OMAP4430_REV_ES2_2; |
David Anders | 55035c1 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 563 | break; |
| 564 | case 6: |
| 565 | default: |
| 566 | omap_revision = OMAP4430_REV_ES2_3; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 567 | } |
| 568 | break; |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 569 | case 0xb94e: |
| 570 | switch (rev) { |
| 571 | case 0: |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 572 | omap_revision = OMAP4460_REV_ES1_0; |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 573 | break; |
Chris Lalancette | 33ee0db | 2012-05-09 09:45:02 -0700 | [diff] [blame] | 574 | case 2: |
| 575 | default: |
| 576 | omap_revision = OMAP4460_REV_ES1_1; |
| 577 | break; |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 578 | } |
| 579 | break; |
Leonid Iziumtsev | ec023e4 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 580 | case 0xb975: |
| 581 | switch (rev) { |
| 582 | case 0: |
| 583 | default: |
| 584 | omap_revision = OMAP4470_REV_ES1_0; |
| 585 | break; |
| 586 | } |
| 587 | break; |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 588 | default: |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 589 | /* Unknown default to latest silicon rev as default */ |
David Anders | 55035c1 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 590 | omap_revision = OMAP4430_REV_ES2_3; |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 591 | } |
| 592 | |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 593 | sprintf(soc_name, "OMAP%04x", omap_rev() >> 16); |
| 594 | sprintf(soc_rev, "ES%d.%d", (omap_rev() >> 12) & 0xf, |
| 595 | (omap_rev() >> 8) & 0xf); |
| 596 | pr_info("%s %s\n", soc_name, soc_rev); |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 597 | } |
| 598 | |
R Sricharan | b13e80a | 2012-04-19 17:42:19 +0530 | [diff] [blame] | 599 | void __init omap5xxx_check_revision(void) |
| 600 | { |
| 601 | u32 idcode; |
| 602 | u16 hawkeye; |
| 603 | u8 rev; |
| 604 | |
| 605 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 606 | hawkeye = (idcode >> 12) & 0xffff; |
| 607 | rev = (idcode >> 28) & 0xff; |
| 608 | switch (hawkeye) { |
| 609 | case 0xb942: |
| 610 | switch (rev) { |
| 611 | case 0: |
Nishanth Menon | aa2f4b1 | 2013-09-18 09:05:42 -0500 | [diff] [blame] | 612 | /* No support for ES1.0 Test chip */ |
| 613 | BUG(); |
Santosh Shilimkar | 5a898a7 | 2013-01-07 19:29:46 +0530 | [diff] [blame] | 614 | case 1: |
| 615 | default: |
| 616 | omap_revision = OMAP5430_REV_ES2_0; |
R Sricharan | b13e80a | 2012-04-19 17:42:19 +0530 | [diff] [blame] | 617 | } |
| 618 | break; |
| 619 | |
| 620 | case 0xb998: |
| 621 | switch (rev) { |
| 622 | case 0: |
Nishanth Menon | aa2f4b1 | 2013-09-18 09:05:42 -0500 | [diff] [blame] | 623 | /* No support for ES1.0 Test chip */ |
| 624 | BUG(); |
Santosh Shilimkar | 5a898a7 | 2013-01-07 19:29:46 +0530 | [diff] [blame] | 625 | case 1: |
| 626 | default: |
| 627 | omap_revision = OMAP5432_REV_ES2_0; |
R Sricharan | b13e80a | 2012-04-19 17:42:19 +0530 | [diff] [blame] | 628 | } |
| 629 | break; |
| 630 | |
| 631 | default: |
| 632 | /* Unknown default to latest silicon rev as default*/ |
Santosh Shilimkar | 5a898a7 | 2013-01-07 19:29:46 +0530 | [diff] [blame] | 633 | omap_revision = OMAP5430_REV_ES2_0; |
R Sricharan | b13e80a | 2012-04-19 17:42:19 +0530 | [diff] [blame] | 634 | } |
| 635 | |
Ruslan Bilovol | f9d41ee | 2013-02-14 13:55:23 +0200 | [diff] [blame] | 636 | sprintf(soc_name, "OMAP%04x", omap_rev() >> 16); |
| 637 | sprintf(soc_rev, "ES%d.0", (omap_rev() >> 12) & 0xf); |
| 638 | |
| 639 | pr_info("%s %s\n", soc_name, soc_rev); |
R Sricharan | b13e80a | 2012-04-19 17:42:19 +0530 | [diff] [blame] | 640 | } |
| 641 | |
Nishanth Menon | 733d20e | 2014-05-19 10:27:11 -0500 | [diff] [blame] | 642 | void __init dra7xxx_check_revision(void) |
| 643 | { |
| 644 | u32 idcode; |
| 645 | u16 hawkeye; |
| 646 | u8 rev; |
| 647 | |
| 648 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 649 | hawkeye = (idcode >> 12) & 0xffff; |
| 650 | rev = (idcode >> 28) & 0xff; |
| 651 | switch (hawkeye) { |
| 652 | case 0xb990: |
| 653 | switch (rev) { |
| 654 | case 0: |
| 655 | omap_revision = DRA752_REV_ES1_0; |
| 656 | break; |
| 657 | case 1: |
Nishanth Menon | 733d20e | 2014-05-19 10:27:11 -0500 | [diff] [blame] | 658 | omap_revision = DRA752_REV_ES1_1; |
Vishal Mahaveer | 81032e3 | 2015-09-01 13:59:25 -0700 | [diff] [blame] | 659 | break; |
| 660 | case 2: |
| 661 | default: |
| 662 | omap_revision = DRA752_REV_ES2_0; |
| 663 | break; |
Nishanth Menon | 733d20e | 2014-05-19 10:27:11 -0500 | [diff] [blame] | 664 | } |
| 665 | break; |
| 666 | |
Nishanth Menon | 73d2028 | 2014-05-29 14:05:50 -0500 | [diff] [blame] | 667 | case 0xb9bc: |
| 668 | switch (rev) { |
| 669 | case 0: |
| 670 | omap_revision = DRA722_REV_ES1_0; |
| 671 | break; |
| 672 | default: |
| 673 | /* If we have no new revisions */ |
| 674 | omap_revision = DRA722_REV_ES1_0; |
| 675 | break; |
| 676 | } |
| 677 | break; |
| 678 | |
Nishanth Menon | 733d20e | 2014-05-19 10:27:11 -0500 | [diff] [blame] | 679 | default: |
| 680 | /* Unknown default to latest silicon rev as default*/ |
Hans Wennborg | 6953faf | 2014-08-25 16:15:34 -0700 | [diff] [blame] | 681 | pr_warn("%s: unknown idcode=0x%08x (hawkeye=0x%08x,rev=0x%x)\n", |
Nishanth Menon | 733d20e | 2014-05-19 10:27:11 -0500 | [diff] [blame] | 682 | __func__, idcode, hawkeye, rev); |
Vishal Mahaveer | 81032e3 | 2015-09-01 13:59:25 -0700 | [diff] [blame] | 683 | omap_revision = DRA752_REV_ES2_0; |
Nishanth Menon | 733d20e | 2014-05-19 10:27:11 -0500 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | sprintf(soc_name, "DRA%03x", omap_rev() >> 16); |
| 687 | sprintf(soc_rev, "ES%d.%d", (omap_rev() >> 12) & 0xf, |
| 688 | (omap_rev() >> 8) & 0xf); |
| 689 | |
| 690 | pr_info("%s %s\n", soc_name, soc_rev); |
| 691 | } |
| 692 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 693 | /* |
| 694 | * Set up things for map_io and processor detection later on. Gets called |
| 695 | * pretty much first thing from board init. For multi-omap, this gets |
| 696 | * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to |
| 697 | * detect the exact revision later on in omap2_detect_revision() once map_io |
| 698 | * is done. |
| 699 | */ |
Paul Walmsley | b6a4226 | 2012-10-29 20:50:21 -0600 | [diff] [blame] | 700 | void __init omap2_set_globals_tap(u32 class, void __iomem *tap) |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 701 | { |
Paul Walmsley | b6a4226 | 2012-10-29 20:50:21 -0600 | [diff] [blame] | 702 | omap_revision = class; |
| 703 | tap_base = tap; |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 704 | |
Paul Walmsley | b6a4226 | 2012-10-29 20:50:21 -0600 | [diff] [blame] | 705 | /* XXX What is this intended to do? */ |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 706 | if (soc_is_omap34xx()) |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 707 | tap_prod_id = 0x0210; |
| 708 | else |
| 709 | tap_prod_id = 0x0208; |
| 710 | } |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 711 | |
| 712 | #ifdef CONFIG_SOC_BUS |
| 713 | |
Sebastian Andrzej Siewior | 415ab32 | 2013-06-06 15:24:38 +0200 | [diff] [blame] | 714 | static const char * const omap_types[] = { |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 715 | [OMAP2_DEVICE_TYPE_TEST] = "TST", |
| 716 | [OMAP2_DEVICE_TYPE_EMU] = "EMU", |
| 717 | [OMAP2_DEVICE_TYPE_SEC] = "HS", |
| 718 | [OMAP2_DEVICE_TYPE_GP] = "GP", |
| 719 | [OMAP2_DEVICE_TYPE_BAD] = "BAD", |
| 720 | }; |
| 721 | |
| 722 | static const char * __init omap_get_family(void) |
| 723 | { |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 724 | if (soc_is_omap24xx()) |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 725 | return kasprintf(GFP_KERNEL, "OMAP2"); |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 726 | else if (soc_is_omap34xx()) |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 727 | return kasprintf(GFP_KERNEL, "OMAP3"); |
Keerthy | 3ea4a18 | 2015-10-14 11:13:08 +0530 | [diff] [blame] | 728 | else if (soc_is_omap44xx()) |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 729 | return kasprintf(GFP_KERNEL, "OMAP4"); |
| 730 | else if (soc_is_omap54xx()) |
| 731 | return kasprintf(GFP_KERNEL, "OMAP5"); |
Suman Anna | e5ed5b6 | 2015-03-11 18:38:38 -0500 | [diff] [blame] | 732 | else if (soc_is_am33xx() || soc_is_am335x()) |
| 733 | return kasprintf(GFP_KERNEL, "AM33xx"); |
Afzal Mohammed | 7a2e051 | 2014-02-07 15:51:25 +0530 | [diff] [blame] | 734 | else if (soc_is_am43xx()) |
| 735 | return kasprintf(GFP_KERNEL, "AM43xx"); |
Nishanth Menon | 733d20e | 2014-05-19 10:27:11 -0500 | [diff] [blame] | 736 | else if (soc_is_dra7xx()) |
| 737 | return kasprintf(GFP_KERNEL, "DRA7"); |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 738 | else |
| 739 | return kasprintf(GFP_KERNEL, "Unknown"); |
| 740 | } |
| 741 | |
| 742 | static ssize_t omap_get_type(struct device *dev, |
| 743 | struct device_attribute *attr, |
| 744 | char *buf) |
| 745 | { |
| 746 | return sprintf(buf, "%s\n", omap_types[omap_type()]); |
| 747 | } |
| 748 | |
| 749 | static struct device_attribute omap_soc_attr = |
| 750 | __ATTR(type, S_IRUGO, omap_get_type, NULL); |
| 751 | |
| 752 | void __init omap_soc_device_init(void) |
| 753 | { |
| 754 | struct device *parent; |
| 755 | struct soc_device *soc_dev; |
| 756 | struct soc_device_attribute *soc_dev_attr; |
| 757 | |
| 758 | soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); |
| 759 | if (!soc_dev_attr) |
| 760 | return; |
| 761 | |
| 762 | soc_dev_attr->machine = soc_name; |
| 763 | soc_dev_attr->family = omap_get_family(); |
| 764 | soc_dev_attr->revision = soc_rev; |
| 765 | |
| 766 | soc_dev = soc_device_register(soc_dev_attr); |
Tony Lindgren | b1dd11d | 2013-05-09 08:27:25 -0700 | [diff] [blame] | 767 | if (IS_ERR(soc_dev)) { |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 768 | kfree(soc_dev_attr); |
| 769 | return; |
| 770 | } |
| 771 | |
| 772 | parent = soc_device_to_device(soc_dev); |
Tony Lindgren | b1dd11d | 2013-05-09 08:27:25 -0700 | [diff] [blame] | 773 | device_create_file(parent, &omap_soc_attr); |
Ruslan Bilovol | 6770b21 | 2013-02-14 13:55:24 +0200 | [diff] [blame] | 774 | } |
| 775 | #endif /* CONFIG_SOC_BUS */ |