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> |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 21 | |
Russell King | 0ba8b9b | 2008-08-10 18:08:10 +0100 | [diff] [blame] | 22 | #include <asm/cputype.h> |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 23 | |
Tony Lindgren | 4e65331 | 2011-11-10 22:45:17 +0100 | [diff] [blame] | 24 | #include "common.h" |
Tony Lindgren | ce491cf | 2009-10-20 09:40:47 -0700 | [diff] [blame] | 25 | #include <plat/cpu.h> |
Syed Mohammed Khasim | 72d0f1c | 2006-12-06 17:14:05 -0800 | [diff] [blame] | 26 | |
Kan-Ru Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 27 | #include <mach/id.h> |
| 28 | |
Paul Walmsley | 4814ced | 2010-10-08 11:40:20 -0600 | [diff] [blame] | 29 | #include "control.h" |
| 30 | |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 31 | static unsigned int omap_revision; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 32 | static const char *cpu_rev; |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 33 | u32 omap_features; |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 34 | |
| 35 | unsigned int omap_rev(void) |
| 36 | { |
| 37 | return omap_revision; |
| 38 | } |
| 39 | EXPORT_SYMBOL(omap_rev); |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 40 | |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 41 | int omap_type(void) |
| 42 | { |
| 43 | u32 val = 0; |
| 44 | |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 45 | if (cpu_is_omap24xx()) { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 46 | val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS); |
Afzal Mohammed | fb3cfb1 | 2012-03-05 16:11:01 -0800 | [diff] [blame] | 47 | } else if (cpu_is_am33xx()) { |
| 48 | val = omap_ctrl_readl(AM33XX_CONTROL_STATUS); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 49 | } else if (cpu_is_omap34xx()) { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 50 | val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS); |
Santosh Shilimkar | 737daa0 | 2010-02-18 08:59:10 +0000 | [diff] [blame] | 51 | } else if (cpu_is_omap44xx()) { |
Santosh Shilimkar | dcf5ef3 | 2010-09-27 14:02:58 -0600 | [diff] [blame] | 52 | val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 53 | } else { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 54 | pr_err("Cannot detect omap type!\n"); |
| 55 | goto out; |
| 56 | } |
| 57 | |
| 58 | val &= OMAP2_DEVICETYPE_MASK; |
| 59 | val >>= 8; |
| 60 | |
| 61 | out: |
| 62 | return val; |
| 63 | } |
| 64 | EXPORT_SYMBOL(omap_type); |
| 65 | |
| 66 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 67 | /*----------------------------------------------------------------------------*/ |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 68 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 69 | #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 Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 74 | |
Andy Green | b235e00 | 2011-03-12 22:50:54 +0000 | [diff] [blame] | 75 | #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 Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 80 | #define read_tap_reg(reg) __raw_readl(tap_base + (reg)) |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 81 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 82 | struct omap_id { |
| 83 | u16 hawkeye; /* Silicon type (Hawkeye id) */ |
| 84 | u8 dev; /* Device type from production_id reg */ |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 85 | u32 type; /* Combined type id copied to omap_revision */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 86 | }; |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 87 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 88 | /* Register values to detect the OMAP version */ |
| 89 | static 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 Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 97 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 98 | static void __iomem *tap_base; |
| 99 | static u16 tap_prod_id; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 100 | |
Kan-Ru Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 101 | void omap_get_die_id(struct omap_die_id *odi) |
| 102 | { |
Andy Green | b235e00 | 2011-03-12 22:50:54 +0000 | [diff] [blame] | 103 | 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 Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 111 | 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 Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 117 | void __init omap2xxx_check_revision(void) |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 118 | { |
| 119 | int i, j; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 120 | u32 idcode, prod_id; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 121 | u16 hawkeye; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 122 | u8 dev_type, rev; |
Kan-Ru Chen | c46732b | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 123 | struct omap_die_id odi; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 124 | |
| 125 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 126 | prod_id = read_tap_reg(tap_prod_id); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 127 | hawkeye = (idcode >> 12) & 0xffff; |
| 128 | rev = (idcode >> 28) & 0x0f; |
| 129 | dev_type = (prod_id >> 16) & 0x0f; |
Kan-Ru Chen | c46732b | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 130 | omap_get_die_id(&odi); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 131 | |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 132 | pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n", |
| 133 | idcode, rev, hawkeye, (idcode >> 1) & 0x7ff); |
Kan-Ru Chen | c46732b | 2010-08-02 14:21:41 +0300 | [diff] [blame] | 134 | 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] | 135 | 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] | 136 | 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 Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 139 | pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n", |
| 140 | prod_id, dev_type); |
| 141 | |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 142 | /* 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 Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 164 | |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 165 | pr_info("OMAP%04x", omap_rev() >> 16); |
| 166 | if ((omap_rev() >> 8) & 0x0f) |
| 167 | pr_info("ES%x", (omap_rev() >> 12) & 0xf); |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 168 | pr_info("\n"); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 169 | } |
| 170 | |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 171 | #define OMAP3_SHOW_FEATURE(feat) \ |
| 172 | if (omap3_has_ ##feat()) \ |
| 173 | printk(#feat" "); |
| 174 | |
| 175 | static 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"; |
Kevin Hilman | 68a88b9 | 2012-04-30 16:37:10 -0700 | [diff] [blame^] | 188 | } else if (soc_is_am35xx()) { |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 189 | cpu_name = (omap3_has_sgx()) ? "AM3517" : "AM3505"; |
| 190 | } else if (cpu_is_ti816x()) { |
| 191 | cpu_name = "TI816X"; |
| 192 | } else if (cpu_is_am335x()) { |
| 193 | cpu_name = "AM335X"; |
| 194 | } else if (cpu_is_ti814x()) { |
| 195 | cpu_name = "TI814X"; |
| 196 | } else if (omap3_has_iva() && omap3_has_sgx()) { |
| 197 | /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */ |
| 198 | cpu_name = "OMAP3430/3530"; |
| 199 | } else if (omap3_has_iva()) { |
| 200 | cpu_name = "OMAP3525"; |
| 201 | } else if (omap3_has_sgx()) { |
| 202 | cpu_name = "OMAP3515"; |
| 203 | } else { |
| 204 | cpu_name = "OMAP3503"; |
| 205 | } |
| 206 | |
| 207 | /* Print verbose information */ |
| 208 | pr_info("%s ES%s (", cpu_name, cpu_rev); |
| 209 | |
| 210 | OMAP3_SHOW_FEATURE(l2cache); |
| 211 | OMAP3_SHOW_FEATURE(iva); |
| 212 | OMAP3_SHOW_FEATURE(sgx); |
| 213 | OMAP3_SHOW_FEATURE(neon); |
| 214 | OMAP3_SHOW_FEATURE(isp); |
| 215 | OMAP3_SHOW_FEATURE(192mhz_clk); |
| 216 | |
| 217 | printk(")\n"); |
| 218 | } |
| 219 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 220 | #define OMAP3_CHECK_FEATURE(status,feat) \ |
| 221 | if (((status & OMAP3_ ##feat## _MASK) \ |
| 222 | >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \ |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 223 | omap_features |= OMAP3_HAS_ ##feat; \ |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 224 | } |
| 225 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 226 | void __init omap3xxx_check_features(void) |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 227 | { |
| 228 | u32 status; |
| 229 | |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 230 | omap_features = 0; |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 231 | |
| 232 | status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS); |
| 233 | |
| 234 | OMAP3_CHECK_FEATURE(status, L2CACHE); |
| 235 | OMAP3_CHECK_FEATURE(status, IVA); |
| 236 | OMAP3_CHECK_FEATURE(status, SGX); |
| 237 | OMAP3_CHECK_FEATURE(status, NEON); |
| 238 | OMAP3_CHECK_FEATURE(status, ISP); |
Vishwanath BS | 7356f0b | 2010-02-22 22:09:10 -0700 | [diff] [blame] | 239 | if (cpu_is_omap3630()) |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 240 | omap_features |= OMAP3_HAS_192MHZ_CLK; |
Paul Walmsley | b02b917 | 2011-10-06 17:18:45 -0600 | [diff] [blame] | 241 | if (cpu_is_omap3430() || cpu_is_omap3630()) |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 242 | omap_features |= OMAP3_HAS_IO_WAKEUP; |
Paul Walmsley | b02b917 | 2011-10-06 17:18:45 -0600 | [diff] [blame] | 243 | if (cpu_is_omap3630() || omap_rev() == OMAP3430_REV_ES3_1 || |
| 244 | omap_rev() == OMAP3430_REV_ES3_1_2) |
| 245 | omap_features |= OMAP3_HAS_IO_CHAIN_CTRL; |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 246 | |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 247 | omap_features |= OMAP3_HAS_SDRC; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 248 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 249 | /* |
| 250 | * TODO: Get additional info (where applicable) |
| 251 | * e.g. Size of L2 cache. |
| 252 | */ |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 253 | |
| 254 | omap3_cpuinfo(); |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 255 | } |
| 256 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 257 | void __init omap4xxx_check_features(void) |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 258 | { |
| 259 | u32 si_type; |
| 260 | |
| 261 | if (cpu_is_omap443x()) |
| 262 | omap_features |= OMAP4_HAS_MPU_1GHZ; |
| 263 | |
| 264 | |
| 265 | if (cpu_is_omap446x()) { |
| 266 | si_type = |
| 267 | read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1); |
| 268 | switch ((si_type & (3 << 16)) >> 16) { |
| 269 | case 2: |
| 270 | /* High performance device */ |
| 271 | omap_features |= OMAP4_HAS_MPU_1_5GHZ; |
| 272 | break; |
| 273 | case 1: |
| 274 | default: |
| 275 | /* Standard device */ |
| 276 | omap_features |= OMAP4_HAS_MPU_1_2GHZ; |
| 277 | break; |
| 278 | } |
| 279 | } |
| 280 | } |
| 281 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 282 | void __init ti81xx_check_features(void) |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 283 | { |
Aneesh V | cc0170b | 2011-07-02 08:00:22 +0530 | [diff] [blame] | 284 | omap_features = OMAP3_HAS_NEON; |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 285 | omap3_cpuinfo(); |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 286 | } |
| 287 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 288 | void __init omap3xxx_check_revision(void) |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 289 | { |
| 290 | u32 cpuid, idcode; |
| 291 | u16 hawkeye; |
| 292 | u8 rev; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 293 | |
| 294 | /* |
| 295 | * We cannot access revision registers on ES1.0. |
| 296 | * If the processor type is Cortex-A8 and the revision is 0x0 |
| 297 | * it means its Cortex r0p0 which is 3430 ES1.0. |
| 298 | */ |
| 299 | cpuid = read_cpuid(CPUID_ID); |
| 300 | if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) { |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 301 | omap_revision = OMAP3430_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 302 | cpu_rev = "1.0"; |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 303 | return; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | /* |
| 307 | * Detection for 34xx ES2.0 and above can be done with just |
| 308 | * hawkeye and rev. See TRM 1.5.2 Device Identification. |
| 309 | * Note that rev does not map directly to our defined processor |
| 310 | * revision numbers as ES1.0 uses value 0. |
| 311 | */ |
| 312 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 313 | hawkeye = (idcode >> 12) & 0xffff; |
| 314 | rev = (idcode >> 28) & 0xff; |
| 315 | |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 316 | switch (hawkeye) { |
| 317 | case 0xb7ae: |
| 318 | /* Handle 34xx/35xx devices */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 319 | switch (rev) { |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 320 | case 0: /* Take care of early samples */ |
| 321 | case 1: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 322 | omap_revision = OMAP3430_REV_ES2_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 323 | cpu_rev = "2.0"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 324 | break; |
| 325 | case 2: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 326 | omap_revision = OMAP3430_REV_ES2_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 327 | cpu_rev = "2.1"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 328 | break; |
| 329 | case 3: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 330 | omap_revision = OMAP3430_REV_ES3_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 331 | cpu_rev = "3.0"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 332 | break; |
Tony Lindgren | 187e688 | 2009-01-29 08:57:16 -0800 | [diff] [blame] | 333 | case 4: |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 334 | omap_revision = OMAP3430_REV_ES3_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 335 | cpu_rev = "3.1"; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 336 | break; |
| 337 | case 7: |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 338 | /* FALLTHROUGH */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 339 | default: |
| 340 | /* Use the latest known revision as default */ |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 341 | omap_revision = OMAP3430_REV_ES3_1_2; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 342 | cpu_rev = "3.1.2"; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 343 | } |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 344 | break; |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 345 | case 0xb868: |
Paul Walmsley | 1f1b035 | 2011-09-13 19:52:13 -0600 | [diff] [blame] | 346 | /* |
| 347 | * Handle OMAP/AM 3505/3517 devices |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 348 | * |
Paul Walmsley | 1f1b035 | 2011-09-13 19:52:13 -0600 | [diff] [blame] | 349 | * Set the device to be OMAP3517 here. Actual device |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 350 | * is identified later based on the features. |
| 351 | */ |
Paul Walmsley | 9ed2ba7 | 2011-09-13 19:52:14 -0600 | [diff] [blame] | 352 | switch (rev) { |
| 353 | case 0: |
Kevin Hilman | 68a88b9 | 2012-04-30 16:37:10 -0700 | [diff] [blame^] | 354 | omap_revision = AM35XX_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 355 | cpu_rev = "1.0"; |
Paul Walmsley | 9ed2ba7 | 2011-09-13 19:52:14 -0600 | [diff] [blame] | 356 | break; |
| 357 | case 1: |
| 358 | /* FALLTHROUGH */ |
| 359 | default: |
Kevin Hilman | 68a88b9 | 2012-04-30 16:37:10 -0700 | [diff] [blame^] | 360 | omap_revision = AM35XX_REV_ES1_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 361 | cpu_rev = "1.1"; |
Paul Walmsley | 9ed2ba7 | 2011-09-13 19:52:14 -0600 | [diff] [blame] | 362 | } |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 363 | break; |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 364 | case 0xb891: |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 365 | /* Handle 36xx devices */ |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 366 | |
| 367 | switch(rev) { |
| 368 | case 0: /* Take care of early samples */ |
| 369 | omap_revision = OMAP3630_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 370 | cpu_rev = "1.0"; |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 371 | break; |
| 372 | case 1: |
| 373 | omap_revision = OMAP3630_REV_ES1_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 374 | cpu_rev = "1.1"; |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 375 | break; |
| 376 | case 2: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 377 | /* FALLTHROUGH */ |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 378 | default: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 379 | omap_revision = OMAP3630_REV_ES1_2; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 380 | cpu_rev = "1.2"; |
Anand Gadiyar | b0a1a6c | 2010-08-03 19:59:24 +0000 | [diff] [blame] | 381 | } |
Nishanth Menon | 77c0870 | 2010-08-16 09:21:19 +0300 | [diff] [blame] | 382 | break; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 383 | case 0xb81e: |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 384 | switch (rev) { |
| 385 | case 0: |
| 386 | omap_revision = TI8168_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 387 | cpu_rev = "1.0"; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 388 | break; |
| 389 | case 1: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 390 | /* FALLTHROUGH */ |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 391 | default: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 392 | omap_revision = TI8168_REV_ES1_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 393 | cpu_rev = "1.1"; |
Paul Walmsley | 3b32b7d | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 394 | break; |
Hemant Pedanekar | 0100171 | 2011-02-16 08:31:39 -0800 | [diff] [blame] | 395 | } |
| 396 | break; |
Afzal Mohammed | 1e6cb14 | 2011-12-13 10:46:43 -0800 | [diff] [blame] | 397 | case 0xb944: |
| 398 | omap_revision = AM335X_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 399 | cpu_rev = "1.0"; |
Vaibhav Hiremath | c2d1355 | 2012-01-23 13:26:47 +0530 | [diff] [blame] | 400 | break; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 401 | case 0xb8f2: |
| 402 | switch (rev) { |
| 403 | case 0: |
| 404 | /* FALLTHROUGH */ |
| 405 | case 1: |
| 406 | omap_revision = TI8148_REV_ES1_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 407 | cpu_rev = "1.0"; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 408 | break; |
| 409 | case 2: |
| 410 | omap_revision = TI8148_REV_ES2_0; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 411 | cpu_rev = "2.0"; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 412 | break; |
| 413 | case 3: |
| 414 | /* FALLTHROUGH */ |
| 415 | default: |
| 416 | omap_revision = TI8148_REV_ES2_1; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 417 | cpu_rev = "2.1"; |
Hemant Pedanekar | 4390f5b | 2011-12-13 10:46:45 -0800 | [diff] [blame] | 418 | break; |
| 419 | } |
Afzal Mohammed | 1e6cb14 | 2011-12-13 10:46:43 -0800 | [diff] [blame] | 420 | break; |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 421 | default: |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 422 | /* Unknown default to latest silicon rev as default */ |
Paul Walmsley | 3b32b7d | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 423 | omap_revision = OMAP3630_REV_ES1_2; |
Vaibhav Hiremath | 50a01e6 | 2011-12-19 15:50:14 +0530 | [diff] [blame] | 424 | cpu_rev = "1.2"; |
Paul Walmsley | 51ec811 | 2011-09-13 19:52:15 -0600 | [diff] [blame] | 425 | pr_warn("Warning: unknown chip type; assuming OMAP3630ES1.2\n"); |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 426 | } |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 427 | } |
| 428 | |
Vaibhav Hiremath | 4de34f3 | 2011-12-19 15:50:15 +0530 | [diff] [blame] | 429 | void __init omap4xxx_check_revision(void) |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 430 | { |
| 431 | u32 idcode; |
| 432 | u16 hawkeye; |
| 433 | u8 rev; |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 434 | |
| 435 | /* |
| 436 | * The IC rev detection is done with hawkeye and rev. |
| 437 | * Note that rev does not map directly to defined processor |
| 438 | * revision numbers as ES1.0 uses value 0. |
| 439 | */ |
| 440 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 441 | hawkeye = (idcode >> 12) & 0xffff; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 442 | rev = (idcode >> 28) & 0xf; |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 443 | |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 444 | /* |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 445 | * Few initial 4430 ES2.0 samples IDCODE is same as ES1.0 |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 446 | * Use ARM register to detect the correct ES version |
| 447 | */ |
Leonid Iziumtsev | ec023e4 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 448 | if (!rev && (hawkeye != 0xb94e) && (hawkeye != 0xb975)) { |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 449 | idcode = read_cpuid(CPUID_ID); |
| 450 | rev = (idcode & 0xf) - 1; |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 451 | } |
| 452 | |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 453 | switch (hawkeye) { |
| 454 | case 0xb852: |
| 455 | switch (rev) { |
| 456 | case 0: |
| 457 | omap_revision = OMAP4430_REV_ES1_0; |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 458 | break; |
| 459 | case 1: |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 460 | default: |
| 461 | omap_revision = OMAP4430_REV_ES2_0; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 462 | } |
| 463 | break; |
| 464 | case 0xb95c: |
| 465 | switch (rev) { |
| 466 | case 3: |
| 467 | omap_revision = OMAP4430_REV_ES2_1; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 468 | break; |
| 469 | case 4: |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 470 | omap_revision = OMAP4430_REV_ES2_2; |
David Anders | 55035c1 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 471 | break; |
| 472 | case 6: |
| 473 | default: |
| 474 | omap_revision = OMAP4430_REV_ES2_3; |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 475 | } |
| 476 | break; |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 477 | case 0xb94e: |
| 478 | switch (rev) { |
| 479 | case 0: |
| 480 | default: |
| 481 | omap_revision = OMAP4460_REV_ES1_0; |
Aneesh V | fa54dcc | 2011-07-02 08:00:21 +0530 | [diff] [blame] | 482 | break; |
| 483 | } |
| 484 | break; |
Leonid Iziumtsev | ec023e4 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 485 | case 0xb975: |
| 486 | switch (rev) { |
| 487 | case 0: |
| 488 | default: |
| 489 | omap_revision = OMAP4470_REV_ES1_0; |
| 490 | break; |
| 491 | } |
| 492 | break; |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 493 | default: |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 494 | /* Unknown default to latest silicon rev as default */ |
David Anders | 55035c1 | 2011-12-13 10:46:44 -0800 | [diff] [blame] | 495 | omap_revision = OMAP4430_REV_ES2_3; |
Santosh Shilimkar | ed6be0b | 2010-09-16 18:44:46 +0530 | [diff] [blame] | 496 | } |
| 497 | |
Nishant Kamat | e49c4d2 | 2011-02-17 09:55:03 -0800 | [diff] [blame] | 498 | pr_info("OMAP%04x ES%d.%d\n", omap_rev() >> 16, |
| 499 | ((omap_rev() >> 12) & 0xf), ((omap_rev() >> 8) & 0xf)); |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 500 | } |
| 501 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 502 | /* |
| 503 | * Set up things for map_io and processor detection later on. Gets called |
| 504 | * pretty much first thing from board init. For multi-omap, this gets |
| 505 | * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to |
| 506 | * detect the exact revision later on in omap2_detect_revision() once map_io |
| 507 | * is done. |
| 508 | */ |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 509 | void __init omap2_set_globals_tap(struct omap_globals *omap2_globals) |
| 510 | { |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 511 | omap_revision = omap2_globals->class; |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 512 | tap_base = omap2_globals->tap; |
| 513 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 514 | if (cpu_is_omap34xx()) |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 515 | tap_prod_id = 0x0210; |
| 516 | else |
| 517 | tap_prod_id = 0x0208; |
| 518 | } |