id.c revision 097c584cd48844d9ef8402bdc6ab49e7e2135f31
11dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren/* 21dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * linux/arch/arm/mach-omap2/id.c 31dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * 41dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * OMAP2 CPU identification code 51dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * 61dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * Copyright (C) 2005 Nokia Corporation 71dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * Written by Tony Lindgren <tony@atomide.com> 81dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * 91dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * This program is free software; you can redistribute it and/or modify 101dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * it under the terms of the GNU General Public License version 2 as 111dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * published by the Free Software Foundation. 121dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren */ 131dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 141dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#include <linux/module.h> 151dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#include <linux/kernel.h> 161dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#include <linux/init.h> 171dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 181dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#include <asm/io.h> 191dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 20097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#include <asm/arch/control.h> 21097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#include <asm/arch/cpu.h> 2272d0f1c3cdc7c456e1e357359ec6f566d0a5f264Syed Mohammed Khasim 23097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#if defined(CONFIG_ARCH_OMAP2420) 24097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#define TAP_BASE io_p2v(0x48014000) 25097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#elif defined(CONFIG_ARCH_OMAP2430) 26097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#define TAP_BASE io_p2v(0x4900A000) 27097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#elif defined(CONFIG_ARCH_OMAP34XX) 28097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#define TAP_BASE io_p2v(0x4830A000) 2972d0f1c3cdc7c456e1e357359ec6f566d0a5f264Syed Mohammed Khasim#endif 301dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 311dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#define OMAP_TAP_IDCODE 0x0204 32097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#if defined(CONFIG_ARCH_OMAP34XX) 33097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#define OMAP_TAP_PROD_ID 0x0210 34097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#else 351dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#define OMAP_TAP_PROD_ID 0x0208 36097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley#endif 371dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 381dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#define OMAP_TAP_DIE_ID_0 0x0218 391dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#define OMAP_TAP_DIE_ID_1 0x021C 401dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#define OMAP_TAP_DIE_ID_2 0x0220 411dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren#define OMAP_TAP_DIE_ID_3 0x0224 421dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 431dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren/* system_rev fields for OMAP2 processors: 441dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * CPU id bits [31:16], 451dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * CPU device type [15:12], (unprg,normal,POP) 461dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * CPU revision [11:08] 471dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren * CPU class bits [07:00] 481dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren */ 491dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 501dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgrenstruct omap_id { 511dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u16 hawkeye; /* Silicon type (Hawkeye id) */ 521dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u8 dev; /* Device type from production_id reg */ 531dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u32 type; /* combined type id copied to system_rev */ 541dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren}; 551dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 561dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren/* Register values to detect the OMAP version */ 571dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgrenstatic struct omap_id omap_ids[] __initdata = { 581dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren { .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200000 }, 591dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren { .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201000 }, 601dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren { .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202000 }, 611dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren { .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220000 }, 621dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren { .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230000 }, 631dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren { .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300000 }, 641dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren}; 651dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 66097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsleystatic struct omap_chip_id omap_chip; 67097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 68097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley/** 69097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * omap_chip_is - test whether currently running OMAP matches a chip type 70097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * @oc: omap_chip_t to test against 71097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * 72097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * Test whether the currently-running OMAP chip matches the supplied 73097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * chip type 'oc'. Returns 1 upon a match; 0 upon failure. 74097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley */ 75097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsleyint omap_chip_is(struct omap_chip_id oci) 76097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley{ 77097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley return (oci.oc & omap_chip.oc) ? 1 : 0; 78097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley} 79097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul WalmsleyEXPORT_SYMBOL(omap_chip_is); 80097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 811dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgrenstatic u32 __init read_tap_reg(int reg) 821dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren{ 83097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley unsigned int regval = 0; 84097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley u32 cpuid; 85097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 86097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Reading the IDCODE register on 3430 ES1 results in a 87097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * data abort as the register is not exposed on the OCP 88097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * Hence reading the Cortex Rev 89097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley */ 90097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley cpuid = read_cpuid(CPUID_ID); 91097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 92097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* If the processor type is Cortex-A8 and the revision is 0x0 93097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * it means its Cortex r0p0 which is 3430 ES1 94097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley */ 95097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley if ((((cpuid >> 4) & 0xFFF) == 0xC08) && ((cpuid & 0xF) == 0x0)) { 96097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley switch (reg) { 97097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley case OMAP_TAP_IDCODE : regval = 0x0B7AE02F; break; 98097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Making DevType as 0xF in ES1 to differ from ES2 */ 99097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley case OMAP_TAP_PROD_ID : regval = 0x000F00F0; break; 100097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley case OMAP_TAP_DIE_ID_0: regval = 0x01000000; break; 101097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley case OMAP_TAP_DIE_ID_1: regval = 0x1012d687; break; 102097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley case OMAP_TAP_DIE_ID_2: regval = 0x00000000; break; 103097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley case OMAP_TAP_DIE_ID_3: regval = 0x2d2c0000; break; 104097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } 105097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } else 106097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley regval = __raw_readl(TAP_BASE + reg); 107097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 108097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley return regval; 109097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 110097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley} 111097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 112097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley/* 113097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * _set_system_rev - set the system_rev global based on current OMAP chip type 114097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * 115097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * Set the system_rev global. This is primarily used by the cpu_is_omapxxxx() 116097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * macros. 117097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley */ 118097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsleystatic void __init _set_system_rev(u32 type, u8 rev) 119097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley{ 120097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley u32 i, ctrl_status; 121097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 122097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* 123097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev encoding is as follows 124097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev & 0xff000000 -> Omap Class (24xx/34xx) 125097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev & 0xfff00000 -> Omap Sub Class (242x/343x) 126097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev & 0xffff0000 -> Omap type (2420/2422/2423/2430/3430) 127097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev & 0x0000f000 -> Silicon revision (ES1, ES2 ) 128097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev & 0x00000700 -> Device Type ( EMU/HS/GP/BAD ) 129097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev & 0x000000c0 -> IDCODE revision[6:7] 130097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * system_rev & 0x0000003f -> sys_boot[0:5] 131097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley */ 132097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Embedding the ES revision info in type field */ 133097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley system_rev = type; 134097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Also add IDCODE revision info only two lower bits */ 135097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley system_rev |= ((rev & 0x3) << 6); 136097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 137097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Add in the device type and sys_boot fields (see above) */ 138097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley if (cpu_is_omap24xx()) { 139097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley i = OMAP24XX_CONTROL_STATUS; 140097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } else if (cpu_is_omap343x()) { 141097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley i = OMAP343X_CONTROL_STATUS; 142097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } else { 143097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley printk(KERN_ERR "id: unknown CPU type\n"); 144097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley BUG(); 145097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } 146097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley ctrl_status = omap_ctrl_readl(i); 147097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley system_rev |= (ctrl_status & (OMAP2_SYSBOOT_5_MASK | 148097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley OMAP2_SYSBOOT_4_MASK | 149097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley OMAP2_SYSBOOT_3_MASK | 150097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley OMAP2_SYSBOOT_2_MASK | 151097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley OMAP2_SYSBOOT_1_MASK | 152097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley OMAP2_SYSBOOT_0_MASK)); 153097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley system_rev |= (ctrl_status & OMAP2_DEVICETYPE_MASK); 154097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley} 155097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 156097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 157097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley/* 158097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * _set_omap_chip - set the omap_chip global based on OMAP chip type 159097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * 160097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * Build the omap_chip bits. This variable is used by powerdomain and 161097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * clockdomain code to indicate whether structures are applicable for 162097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * the current OMAP chip type by ANDing it against a 'platform' bitfield 163097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * in the structure. 164097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley */ 165097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsleystatic void __init _set_omap_chip(void) 166097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley{ 167097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley if (cpu_is_omap343x()) { 168097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 169097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley omap_chip.oc = CHIP_IS_OMAP3430; 170097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley if (is_sil_rev_equal_to(OMAP3430_REV_ES1_0)) 171097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley omap_chip.oc |= CHIP_IS_OMAP3430ES1; 172097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley else if (is_sil_rev_greater_than(OMAP3430_REV_ES1_0)) 173097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley omap_chip.oc |= CHIP_IS_OMAP3430ES2; 174097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 175097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } else if (cpu_is_omap243x()) { 176097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 177097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Currently only supports 2430ES2.1 and 2430-all */ 178097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley omap_chip.oc |= CHIP_IS_OMAP2430; 179097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 180097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } else if (cpu_is_omap242x()) { 181097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 182097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Currently only supports 2420ES2.1.1 and 2420-all */ 183097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley omap_chip.oc |= CHIP_IS_OMAP2420; 184097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 185097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } else { 186097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 187097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* Current CPU not supported by this code. */ 188097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley printk(KERN_WARNING "OMAP chip type code does not yet support " 189097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley "this CPU type.\n"); 190097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley WARN_ON(1); 191097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 192097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } 193097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 1941dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren} 1951dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 1961dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgrenvoid __init omap2_check_revision(void) 1971dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren{ 1981dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren int i, j; 1991dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u32 idcode; 2001dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u32 prod_id; 2011dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u16 hawkeye; 2021dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u8 dev_type; 2031dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren u8 rev; 2041dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 2051dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren idcode = read_tap_reg(OMAP_TAP_IDCODE); 2061dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren prod_id = read_tap_reg(OMAP_TAP_PROD_ID); 2071dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren hawkeye = (idcode >> 12) & 0xffff; 2081dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren rev = (idcode >> 28) & 0x0f; 2091dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren dev_type = (prod_id >> 16) & 0x0f; 2101dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 211097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n", 212097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley idcode, rev, hawkeye, (idcode >> 1) & 0x7ff); 213097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n", 214097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley read_tap_reg(OMAP_TAP_DIE_ID_0)); 215097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n", 216097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley read_tap_reg(OMAP_TAP_DIE_ID_1), 217097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley (read_tap_reg(OMAP_TAP_DIE_ID_1) >> 28) & 0xf); 218097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n", 219097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley read_tap_reg(OMAP_TAP_DIE_ID_2)); 220097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n", 221097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley read_tap_reg(OMAP_TAP_DIE_ID_3)); 222097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n", 223097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley prod_id, dev_type); 224097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 225097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley /* 226097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * Detection for 34xx ES2.0 and above can be done with just 227097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * hawkeye and rev. See TRM 1.5.2 Device Identification. 228097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley * Note that rev cannot be used directly as ES1.0 uses value 0. 229097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley */ 230097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley if (hawkeye == 0xb7ae) { 231097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley system_rev = 0x34300000 | ((1 + rev) << 12); 232097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_info("OMAP%04x ES2.%i\n", system_rev >> 16, rev); 233097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley _set_omap_chip(); 234097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley return; 235097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley } 2361dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 2371dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren /* Check hawkeye ids */ 2381dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren for (i = 0; i < ARRAY_SIZE(omap_ids); i++) { 2391dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren if (hawkeye == omap_ids[i].hawkeye) 2401dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren break; 2411dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren } 2421dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 2431dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren if (i == ARRAY_SIZE(omap_ids)) { 2441dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren printk(KERN_ERR "Unknown OMAP CPU id\n"); 2451dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren return; 2461dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren } 2471dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 2481dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren for (j = i; j < ARRAY_SIZE(omap_ids); j++) { 2491dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren if (dev_type == omap_ids[j].dev) 2501dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren break; 2511dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren } 2521dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 2531dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren if (j == ARRAY_SIZE(omap_ids)) { 2541dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren printk(KERN_ERR "Unknown OMAP device type. " 2551dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren "Handling it as OMAP%04x\n", 2561dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren omap_ids[i].type >> 16); 2571dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren j = i; 2581dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren } 2591dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 260097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley _set_system_rev(omap_ids[j].type, rev); 2611dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 262097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley _set_omap_chip(); 2631dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 2641dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren pr_info("OMAP%04x", system_rev >> 16); 2651dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren if ((system_rev >> 8) & 0x0f) 266097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_info("ES%x", (system_rev >> 12) & 0xf); 267097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley pr_info("\n"); 268097c584cd48844d9ef8402bdc6ab49e7e2135f31Paul Walmsley 2691dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren} 2701dbae815a724303b46ab4663b5fc23c13e9d9690Tony Lindgren 271