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 | * |
Santosh Shilimkar | 4416907 | 2009-05-28 14:16:04 -0700 | [diff] [blame] | 9 | * Copyright (C) 2009 Texas Instruments |
| 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 | ce491cf | 2009-10-20 09:40:47 -0700 | [diff] [blame] | 24 | #include <plat/common.h> |
| 25 | #include <plat/control.h> |
| 26 | #include <plat/cpu.h> |
Syed Mohammed Khasim | 72d0f1c | 2006-12-06 17:14:05 -0800 | [diff] [blame] | 27 | |
Kan-Ru Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame^] | 28 | #include <mach/id.h> |
| 29 | |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 30 | static struct omap_chip_id omap_chip; |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 31 | static unsigned int omap_revision; |
| 32 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 33 | u32 omap3_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 | |
| 41 | /** |
| 42 | * omap_chip_is - test whether currently running OMAP matches a chip type |
| 43 | * @oc: omap_chip_t to test against |
| 44 | * |
| 45 | * Test whether the currently-running OMAP chip matches the supplied |
| 46 | * chip type 'oc'. Returns 1 upon a match; 0 upon failure. |
| 47 | */ |
| 48 | int omap_chip_is(struct omap_chip_id oci) |
| 49 | { |
| 50 | return (oci.oc & omap_chip.oc) ? 1 : 0; |
| 51 | } |
| 52 | EXPORT_SYMBOL(omap_chip_is); |
| 53 | |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 54 | int omap_type(void) |
| 55 | { |
| 56 | u32 val = 0; |
| 57 | |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 58 | if (cpu_is_omap24xx()) { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 59 | val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 60 | } else if (cpu_is_omap34xx()) { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 61 | val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS); |
Santosh Shilimkar | 737daa0 | 2010-02-18 08:59:10 +0000 | [diff] [blame] | 62 | } else if (cpu_is_omap44xx()) { |
| 63 | val = omap_ctrl_readl(OMAP44XX_CONTROL_STATUS); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 64 | } else { |
Kevin Hilman | 8e25ad9 | 2009-06-23 13:30:23 +0300 | [diff] [blame] | 65 | pr_err("Cannot detect omap type!\n"); |
| 66 | goto out; |
| 67 | } |
| 68 | |
| 69 | val &= OMAP2_DEVICETYPE_MASK; |
| 70 | val >>= 8; |
| 71 | |
| 72 | out: |
| 73 | return val; |
| 74 | } |
| 75 | EXPORT_SYMBOL(omap_type); |
| 76 | |
| 77 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 78 | /*----------------------------------------------------------------------------*/ |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 79 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 80 | #define OMAP_TAP_IDCODE 0x0204 |
| 81 | #define OMAP_TAP_DIE_ID_0 0x0218 |
| 82 | #define OMAP_TAP_DIE_ID_1 0x021C |
| 83 | #define OMAP_TAP_DIE_ID_2 0x0220 |
| 84 | #define OMAP_TAP_DIE_ID_3 0x0224 |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 85 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 86 | #define read_tap_reg(reg) __raw_readl(tap_base + (reg)) |
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 | struct omap_id { |
| 89 | u16 hawkeye; /* Silicon type (Hawkeye id) */ |
| 90 | u8 dev; /* Device type from production_id reg */ |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 91 | u32 type; /* Combined type id copied to omap_revision */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 92 | }; |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 93 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 94 | /* Register values to detect the OMAP version */ |
| 95 | static struct omap_id omap_ids[] __initdata = { |
| 96 | { .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200024 }, |
| 97 | { .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201024 }, |
| 98 | { .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202024 }, |
| 99 | { .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220024 }, |
| 100 | { .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230024 }, |
| 101 | { .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300024 }, |
| 102 | }; |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 103 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 104 | static void __iomem *tap_base; |
| 105 | static u16 tap_prod_id; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 106 | |
Kan-Ru Chen | 2e130fc | 2010-08-02 14:21:41 +0300 | [diff] [blame^] | 107 | void omap_get_die_id(struct omap_die_id *odi) |
| 108 | { |
| 109 | odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0); |
| 110 | odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1); |
| 111 | odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2); |
| 112 | odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3); |
| 113 | } |
| 114 | |
Nishanth Menon | 5ebc0d5 | 2010-08-02 14:21:40 +0300 | [diff] [blame] | 115 | static void __init omap24xx_check_revision(void) |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 116 | { |
| 117 | int i, j; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 118 | u32 idcode, prod_id; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 119 | u16 hawkeye; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 120 | u8 dev_type, rev; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 121 | |
| 122 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 123 | prod_id = read_tap_reg(tap_prod_id); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 124 | hawkeye = (idcode >> 12) & 0xffff; |
| 125 | rev = (idcode >> 28) & 0x0f; |
| 126 | dev_type = (prod_id >> 16) & 0x0f; |
| 127 | |
Paul Walmsley | 097c584 | 2008-07-03 12:24:45 +0300 | [diff] [blame] | 128 | pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n", |
| 129 | idcode, rev, hawkeye, (idcode >> 1) & 0x7ff); |
| 130 | pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n", |
| 131 | read_tap_reg(OMAP_TAP_DIE_ID_0)); |
| 132 | pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n", |
| 133 | read_tap_reg(OMAP_TAP_DIE_ID_1), |
| 134 | (read_tap_reg(OMAP_TAP_DIE_ID_1) >> 28) & 0xf); |
| 135 | pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n", |
| 136 | read_tap_reg(OMAP_TAP_DIE_ID_2)); |
| 137 | pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n", |
| 138 | read_tap_reg(OMAP_TAP_DIE_ID_3)); |
| 139 | pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n", |
| 140 | prod_id, dev_type); |
| 141 | |
Tony 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 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 171 | #define OMAP3_CHECK_FEATURE(status,feat) \ |
| 172 | if (((status & OMAP3_ ##feat## _MASK) \ |
| 173 | >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \ |
| 174 | omap3_features |= OMAP3_HAS_ ##feat; \ |
| 175 | } |
| 176 | |
Nishanth Menon | 5ebc0d5 | 2010-08-02 14:21:40 +0300 | [diff] [blame] | 177 | static void __init omap3_check_features(void) |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 178 | { |
| 179 | u32 status; |
| 180 | |
| 181 | omap3_features = 0; |
| 182 | |
| 183 | status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS); |
| 184 | |
| 185 | OMAP3_CHECK_FEATURE(status, L2CACHE); |
| 186 | OMAP3_CHECK_FEATURE(status, IVA); |
| 187 | OMAP3_CHECK_FEATURE(status, SGX); |
| 188 | OMAP3_CHECK_FEATURE(status, NEON); |
| 189 | OMAP3_CHECK_FEATURE(status, ISP); |
Vishwanath BS | 7356f0b | 2010-02-22 22:09:10 -0700 | [diff] [blame] | 190 | if (cpu_is_omap3630()) |
| 191 | omap3_features |= OMAP3_HAS_192MHZ_CLK; |
stanley.miao | ad0c63f | 2010-08-02 14:21:40 +0300 | [diff] [blame] | 192 | if (!cpu_is_omap3505() && !cpu_is_omap3517()) |
| 193 | omap3_features |= OMAP3_HAS_IO_WAKEUP; |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 194 | |
| 195 | /* |
| 196 | * TODO: Get additional info (where applicable) |
| 197 | * e.g. Size of L2 cache. |
| 198 | */ |
| 199 | } |
| 200 | |
Nishanth Menon | 5ebc0d5 | 2010-08-02 14:21:40 +0300 | [diff] [blame] | 201 | static void __init omap3_check_revision(void) |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 202 | { |
| 203 | u32 cpuid, idcode; |
| 204 | u16 hawkeye; |
| 205 | u8 rev; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 206 | |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 207 | omap_chip.oc = CHIP_IS_OMAP3430; |
| 208 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 209 | /* |
| 210 | * We cannot access revision registers on ES1.0. |
| 211 | * If the processor type is Cortex-A8 and the revision is 0x0 |
| 212 | * it means its Cortex r0p0 which is 3430 ES1.0. |
| 213 | */ |
| 214 | cpuid = read_cpuid(CPUID_ID); |
| 215 | if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) { |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 216 | omap_revision = OMAP3430_REV_ES1_0; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 217 | omap_chip.oc |= CHIP_IS_OMAP3430ES1; |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 218 | return; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | /* |
| 222 | * Detection for 34xx ES2.0 and above can be done with just |
| 223 | * hawkeye and rev. See TRM 1.5.2 Device Identification. |
| 224 | * Note that rev does not map directly to our defined processor |
| 225 | * revision numbers as ES1.0 uses value 0. |
| 226 | */ |
| 227 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 228 | hawkeye = (idcode >> 12) & 0xffff; |
| 229 | rev = (idcode >> 28) & 0xff; |
| 230 | |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 231 | switch (hawkeye) { |
| 232 | case 0xb7ae: |
| 233 | /* Handle 34xx/35xx devices */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 234 | switch (rev) { |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 235 | case 0: /* Take care of early samples */ |
| 236 | case 1: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 237 | omap_revision = OMAP3430_REV_ES2_0; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 238 | omap_chip.oc |= CHIP_IS_OMAP3430ES2; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 239 | break; |
| 240 | case 2: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 241 | omap_revision = OMAP3430_REV_ES2_1; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 242 | omap_chip.oc |= CHIP_IS_OMAP3430ES2; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 243 | break; |
| 244 | case 3: |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 245 | omap_revision = OMAP3430_REV_ES3_0; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 246 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_0; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 247 | break; |
Tony Lindgren | 187e688 | 2009-01-29 08:57:16 -0800 | [diff] [blame] | 248 | case 4: |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 249 | omap_revision = OMAP3430_REV_ES3_1; |
| 250 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_1; |
| 251 | break; |
| 252 | case 7: |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 253 | /* FALLTHROUGH */ |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 254 | default: |
| 255 | /* Use the latest known revision as default */ |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 256 | omap_revision = OMAP3430_REV_ES3_1_2; |
| 257 | |
| 258 | /* REVISIT: Add CHIP_IS_OMAP3430ES3_1_2? */ |
| 259 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_1; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 260 | } |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 261 | break; |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 262 | case 0xb868: |
| 263 | /* Handle OMAP35xx/AM35xx devices |
| 264 | * |
| 265 | * Set the device to be OMAP3505 here. Actual device |
| 266 | * is identified later based on the features. |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 267 | * |
| 268 | * REVISIT: AM3505/AM3517 should have their own CHIP_IS |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 269 | */ |
| 270 | omap_revision = OMAP3505_REV(rev); |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 271 | omap_chip.oc |= CHIP_IS_OMAP3430ES3_1; |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 272 | break; |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 273 | case 0xb891: |
| 274 | /* FALLTHROUGH */ |
Nishanth Menon | 2456a10 | 2009-11-22 10:10:56 -0800 | [diff] [blame] | 275 | default: |
| 276 | /* Unknown default to latest silicon rev as default*/ |
| 277 | omap_revision = OMAP3630_REV_ES1_0; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 278 | omap_chip.oc |= CHIP_IS_OMAP3630ES1; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 279 | } |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 280 | } |
| 281 | |
Nishanth Menon | 5ebc0d5 | 2010-08-02 14:21:40 +0300 | [diff] [blame] | 282 | static void __init omap4_check_revision(void) |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 283 | { |
| 284 | u32 idcode; |
| 285 | u16 hawkeye; |
| 286 | u8 rev; |
| 287 | char *rev_name = "ES1.0"; |
| 288 | |
| 289 | /* |
| 290 | * The IC rev detection is done with hawkeye and rev. |
| 291 | * Note that rev does not map directly to defined processor |
| 292 | * revision numbers as ES1.0 uses value 0. |
| 293 | */ |
| 294 | idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| 295 | hawkeye = (idcode >> 12) & 0xffff; |
| 296 | rev = (idcode >> 28) & 0xff; |
| 297 | |
| 298 | if ((hawkeye == 0xb852) && (rev == 0x0)) { |
| 299 | omap_revision = OMAP4430_REV_ES1_0; |
Abhijit Pagare | c6a6e6e | 2010-01-26 20:12:51 -0700 | [diff] [blame] | 300 | omap_chip.oc |= CHIP_IS_OMAP4430ES1; |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 301 | pr_info("OMAP%04x %s\n", omap_rev() >> 16, rev_name); |
| 302 | return; |
| 303 | } |
| 304 | |
| 305 | pr_err("Unknown OMAP4 CPU id\n"); |
| 306 | } |
| 307 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 308 | #define OMAP3_SHOW_FEATURE(feat) \ |
Kevin Hilman | cedf900 | 2009-11-22 10:11:13 -0800 | [diff] [blame] | 309 | if (omap3_has_ ##feat()) \ |
| 310 | printk(#feat" "); |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 311 | |
Nishanth Menon | 5ebc0d5 | 2010-08-02 14:21:40 +0300 | [diff] [blame] | 312 | static void __init omap3_cpuinfo(void) |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 313 | { |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 314 | u8 rev = GET_OMAP_REVISION(); |
| 315 | char cpu_name[16], cpu_rev[16]; |
| 316 | |
| 317 | /* OMAP3430 and OMAP3530 are assumed to be same. |
| 318 | * |
| 319 | * OMAP3525, OMAP3515 and OMAP3503 can be detected only based |
| 320 | * on available features. Upon detection, update the CPU id |
| 321 | * and CPU class bits. |
| 322 | */ |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 323 | if (cpu_is_omap3630()) { |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 324 | strcpy(cpu_name, "OMAP3630"); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 325 | } else if (cpu_is_omap3505()) { |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 326 | /* |
| 327 | * AM35xx devices |
| 328 | */ |
| 329 | if (omap3_has_sgx()) { |
| 330 | omap_revision = OMAP3517_REV(rev); |
| 331 | strcpy(cpu_name, "AM3517"); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 332 | } else { |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 333 | /* Already set in omap3_check_revision() */ |
| 334 | strcpy(cpu_name, "AM3505"); |
| 335 | } |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 336 | } else if (omap3_has_iva() && omap3_has_sgx()) { |
| 337 | /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */ |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 338 | strcpy(cpu_name, "OMAP3430/3530"); |
Sergey Lapin | 0712fb3 | 2009-12-11 16:16:37 -0800 | [diff] [blame] | 339 | } else if (omap3_has_iva()) { |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 340 | omap_revision = OMAP3525_REV(rev); |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 341 | strcpy(cpu_name, "OMAP3525"); |
Sergey Lapin | 0712fb3 | 2009-12-11 16:16:37 -0800 | [diff] [blame] | 342 | } else if (omap3_has_sgx()) { |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 343 | omap_revision = OMAP3515_REV(rev); |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 344 | strcpy(cpu_name, "OMAP3515"); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 345 | } else { |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 346 | omap_revision = OMAP3503_REV(rev); |
Sanjeev Premi | 4cac601 | 2009-11-22 10:10:58 -0800 | [diff] [blame] | 347 | strcpy(cpu_name, "OMAP3503"); |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | switch (rev) { |
| 351 | case OMAP_REVBITS_00: |
| 352 | strcpy(cpu_rev, "1.0"); |
| 353 | break; |
| 354 | case OMAP_REVBITS_10: |
| 355 | strcpy(cpu_rev, "2.0"); |
| 356 | break; |
| 357 | case OMAP_REVBITS_20: |
| 358 | strcpy(cpu_rev, "2.1"); |
| 359 | break; |
| 360 | case OMAP_REVBITS_30: |
| 361 | strcpy(cpu_rev, "3.0"); |
| 362 | break; |
| 363 | case OMAP_REVBITS_40: |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 364 | /* FALLTHROUGH */ |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 365 | default: |
| 366 | /* Use the latest known revision as default */ |
| 367 | strcpy(cpu_rev, "3.1"); |
| 368 | } |
| 369 | |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 370 | /* Print verbose information */ |
Kevin Hilman | cedf900 | 2009-11-22 10:11:13 -0800 | [diff] [blame] | 371 | pr_info("%s ES%s (", cpu_name, cpu_rev); |
Sanjeev Premi | 048f4bd | 2009-11-22 10:10:54 -0800 | [diff] [blame] | 372 | |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 373 | OMAP3_SHOW_FEATURE(l2cache); |
| 374 | OMAP3_SHOW_FEATURE(iva); |
| 375 | OMAP3_SHOW_FEATURE(sgx); |
| 376 | OMAP3_SHOW_FEATURE(neon); |
| 377 | OMAP3_SHOW_FEATURE(isp); |
Vishwanath BS | 7356f0b | 2010-02-22 22:09:10 -0700 | [diff] [blame] | 378 | OMAP3_SHOW_FEATURE(192mhz_clk); |
Kevin Hilman | cedf900 | 2009-11-22 10:11:13 -0800 | [diff] [blame] | 379 | |
| 380 | printk(")\n"); |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 381 | } |
| 382 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 383 | /* |
| 384 | * Try to detect the exact revision of the omap we're running on |
| 385 | */ |
Tony Lindgren | 5ba02dc | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 386 | void __init omap2_check_revision(void) |
| 387 | { |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 388 | /* |
| 389 | * At this point we have an idea about the processor revision set |
| 390 | * earlier with omap2_set_globals_tap(). |
| 391 | */ |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 392 | if (cpu_is_omap24xx()) { |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 393 | omap24xx_check_revision(); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 394 | } else if (cpu_is_omap34xx()) { |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 395 | omap3_check_revision(); |
Nishanth Menon | 05574bb | 2009-11-22 10:11:12 -0800 | [diff] [blame] | 396 | omap3_check_features(); |
Sanjeev Premi | 8384ce0 | 2009-11-22 10:10:53 -0800 | [diff] [blame] | 397 | omap3_cpuinfo(); |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 398 | return; |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 399 | } else if (cpu_is_omap44xx()) { |
Santosh Shilimkar | b570e0e | 2009-12-11 16:16:34 -0800 | [diff] [blame] | 400 | omap4_check_revision(); |
Santosh Shilimkar | 4416907 | 2009-05-28 14:16:04 -0700 | [diff] [blame] | 401 | return; |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 402 | } else { |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 403 | pr_err("OMAP revision unknown, please fix!\n"); |
Felipe Balbi | edeae65 | 2009-11-22 10:11:24 -0800 | [diff] [blame] | 404 | } |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 405 | |
| 406 | /* |
| 407 | * OK, now we know the exact revision. Initialize omap_chip bits |
| 408 | * for powerdowmain and clockdomain code. |
| 409 | */ |
| 410 | if (cpu_is_omap243x()) { |
| 411 | /* Currently only supports 2430ES2.1 and 2430-all */ |
| 412 | omap_chip.oc |= CHIP_IS_OMAP2430; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 413 | return; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 414 | } else if (cpu_is_omap242x()) { |
| 415 | /* Currently only supports 2420ES2.1.1 and 2420-all */ |
| 416 | omap_chip.oc |= CHIP_IS_OMAP2420; |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 417 | return; |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 418 | } |
Tony Lindgren | e9acb9b | 2010-01-19 15:40:26 -0800 | [diff] [blame] | 419 | |
| 420 | pr_err("Uninitialized omap_chip, please fix!\n"); |
Tony Lindgren | 5ba02dc | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 421 | } |
| 422 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 423 | /* |
| 424 | * Set up things for map_io and processor detection later on. Gets called |
| 425 | * pretty much first thing from board init. For multi-omap, this gets |
| 426 | * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to |
| 427 | * detect the exact revision later on in omap2_detect_revision() once map_io |
| 428 | * is done. |
| 429 | */ |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 430 | void __init omap2_set_globals_tap(struct omap_globals *omap2_globals) |
| 431 | { |
Lauri Leukkunen | 84a3434 | 2008-12-10 17:36:31 -0800 | [diff] [blame] | 432 | omap_revision = omap2_globals->class; |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 433 | tap_base = omap2_globals->tap; |
| 434 | |
Tony Lindgren | a882314 | 2008-12-10 17:36:30 -0800 | [diff] [blame] | 435 | if (cpu_is_omap34xx()) |
Tony Lindgren | 0e56484 | 2008-10-06 15:49:16 +0300 | [diff] [blame] | 436 | tap_prod_id = 0x0210; |
| 437 | else |
| 438 | tap_prod_id = 0x0208; |
| 439 | } |