| /* |
| * linux/arch/arm/mach-omap2/id.c |
| * |
| * OMAP2 CPU identification code |
| * |
| * Copyright (C) 2005 Nokia Corporation |
| * Written by Tony Lindgren <tony@atomide.com> |
| * |
| * Copyright (C) 2009-11 Texas Instruments |
| * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| |
| #include <asm/cputype.h> |
| |
| #include "common.h" |
| #include <plat/cpu.h> |
| |
| #include <mach/id.h> |
| |
| #include "control.h" |
| |
| static unsigned int omap_revision; |
| static const char *cpu_rev; |
| u32 omap_features; |
| |
| unsigned int omap_rev(void) |
| { |
| return omap_revision; |
| } |
| EXPORT_SYMBOL(omap_rev); |
| |
| int omap_type(void) |
| { |
| u32 val = 0; |
| |
| if (cpu_is_omap24xx()) { |
| val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS); |
| } else if (cpu_is_omap34xx()) { |
| val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS); |
| } else if (cpu_is_omap44xx()) { |
| val = omap_ctrl_readl(OMAP4_CTRL_MODULE_CORE_STATUS); |
| } else { |
| pr_err("Cannot detect omap type!\n"); |
| goto out; |
| } |
| |
| val &= OMAP2_DEVICETYPE_MASK; |
| val >>= 8; |
| |
| out: |
| return val; |
| } |
| EXPORT_SYMBOL(omap_type); |
| |
| |
| /*----------------------------------------------------------------------------*/ |
| |
| #define OMAP_TAP_IDCODE 0x0204 |
| #define OMAP_TAP_DIE_ID_0 0x0218 |
| #define OMAP_TAP_DIE_ID_1 0x021C |
| #define OMAP_TAP_DIE_ID_2 0x0220 |
| #define OMAP_TAP_DIE_ID_3 0x0224 |
| |
| #define OMAP_TAP_DIE_ID_44XX_0 0x0200 |
| #define OMAP_TAP_DIE_ID_44XX_1 0x0208 |
| #define OMAP_TAP_DIE_ID_44XX_2 0x020c |
| #define OMAP_TAP_DIE_ID_44XX_3 0x0210 |
| |
| #define read_tap_reg(reg) __raw_readl(tap_base + (reg)) |
| |
| struct omap_id { |
| u16 hawkeye; /* Silicon type (Hawkeye id) */ |
| u8 dev; /* Device type from production_id reg */ |
| u32 type; /* Combined type id copied to omap_revision */ |
| }; |
| |
| /* Register values to detect the OMAP version */ |
| static struct omap_id omap_ids[] __initdata = { |
| { .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200024 }, |
| { .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201024 }, |
| { .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202024 }, |
| { .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220024 }, |
| { .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230024 }, |
| { .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300024 }, |
| }; |
| |
| static void __iomem *tap_base; |
| static u16 tap_prod_id; |
| |
| void omap_get_die_id(struct omap_die_id *odi) |
| { |
| if (cpu_is_omap44xx()) { |
| odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_0); |
| odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_1); |
| odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_2); |
| odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_44XX_3); |
| |
| return; |
| } |
| odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0); |
| odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1); |
| odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2); |
| odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3); |
| } |
| |
| void __init omap2xxx_check_revision(void) |
| { |
| int i, j; |
| u32 idcode, prod_id; |
| u16 hawkeye; |
| u8 dev_type, rev; |
| struct omap_die_id odi; |
| |
| idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| prod_id = read_tap_reg(tap_prod_id); |
| hawkeye = (idcode >> 12) & 0xffff; |
| rev = (idcode >> 28) & 0x0f; |
| dev_type = (prod_id >> 16) & 0x0f; |
| omap_get_die_id(&odi); |
| |
| pr_debug("OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n", |
| idcode, rev, hawkeye, (idcode >> 1) & 0x7ff); |
| pr_debug("OMAP_TAP_DIE_ID_0: 0x%08x\n", odi.id_0); |
| pr_debug("OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n", |
| odi.id_1, (odi.id_1 >> 28) & 0xf); |
| pr_debug("OMAP_TAP_DIE_ID_2: 0x%08x\n", odi.id_2); |
| pr_debug("OMAP_TAP_DIE_ID_3: 0x%08x\n", odi.id_3); |
| pr_debug("OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n", |
| prod_id, dev_type); |
| |
| /* Check hawkeye ids */ |
| for (i = 0; i < ARRAY_SIZE(omap_ids); i++) { |
| if (hawkeye == omap_ids[i].hawkeye) |
| break; |
| } |
| |
| if (i == ARRAY_SIZE(omap_ids)) { |
| printk(KERN_ERR "Unknown OMAP CPU id\n"); |
| return; |
| } |
| |
| for (j = i; j < ARRAY_SIZE(omap_ids); j++) { |
| if (dev_type == omap_ids[j].dev) |
| break; |
| } |
| |
| if (j == ARRAY_SIZE(omap_ids)) { |
| printk(KERN_ERR "Unknown OMAP device type. " |
| "Handling it as OMAP%04x\n", |
| omap_ids[i].type >> 16); |
| j = i; |
| } |
| |
| pr_info("OMAP%04x", omap_rev() >> 16); |
| if ((omap_rev() >> 8) & 0x0f) |
| pr_info("ES%x", (omap_rev() >> 12) & 0xf); |
| pr_info("\n"); |
| } |
| |
| #define OMAP3_SHOW_FEATURE(feat) \ |
| if (omap3_has_ ##feat()) \ |
| printk(#feat" "); |
| |
| static void __init omap3_cpuinfo(void) |
| { |
| const char *cpu_name; |
| |
| /* |
| * OMAP3430 and OMAP3530 are assumed to be same. |
| * |
| * OMAP3525, OMAP3515 and OMAP3503 can be detected only based |
| * on available features. Upon detection, update the CPU id |
| * and CPU class bits. |
| */ |
| if (cpu_is_omap3630()) { |
| cpu_name = "OMAP3630"; |
| } else if (cpu_is_omap3517()) { |
| /* AM35xx devices */ |
| cpu_name = (omap3_has_sgx()) ? "AM3517" : "AM3505"; |
| } else if (cpu_is_ti816x()) { |
| cpu_name = "TI816X"; |
| } else if (cpu_is_am335x()) { |
| cpu_name = "AM335X"; |
| } else if (cpu_is_ti814x()) { |
| cpu_name = "TI814X"; |
| } else if (omap3_has_iva() && omap3_has_sgx()) { |
| /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */ |
| cpu_name = "OMAP3430/3530"; |
| } else if (omap3_has_iva()) { |
| cpu_name = "OMAP3525"; |
| } else if (omap3_has_sgx()) { |
| cpu_name = "OMAP3515"; |
| } else { |
| cpu_name = "OMAP3503"; |
| } |
| |
| /* Print verbose information */ |
| pr_info("%s ES%s (", cpu_name, cpu_rev); |
| |
| OMAP3_SHOW_FEATURE(l2cache); |
| OMAP3_SHOW_FEATURE(iva); |
| OMAP3_SHOW_FEATURE(sgx); |
| OMAP3_SHOW_FEATURE(neon); |
| OMAP3_SHOW_FEATURE(isp); |
| OMAP3_SHOW_FEATURE(192mhz_clk); |
| |
| printk(")\n"); |
| } |
| |
| #define OMAP3_CHECK_FEATURE(status,feat) \ |
| if (((status & OMAP3_ ##feat## _MASK) \ |
| >> OMAP3_ ##feat## _SHIFT) != FEAT_ ##feat## _NONE) { \ |
| omap_features |= OMAP3_HAS_ ##feat; \ |
| } |
| |
| void __init omap3xxx_check_features(void) |
| { |
| u32 status; |
| |
| omap_features = 0; |
| |
| status = omap_ctrl_readl(OMAP3_CONTROL_OMAP_STATUS); |
| |
| OMAP3_CHECK_FEATURE(status, L2CACHE); |
| OMAP3_CHECK_FEATURE(status, IVA); |
| OMAP3_CHECK_FEATURE(status, SGX); |
| OMAP3_CHECK_FEATURE(status, NEON); |
| OMAP3_CHECK_FEATURE(status, ISP); |
| if (cpu_is_omap3630()) |
| omap_features |= OMAP3_HAS_192MHZ_CLK; |
| if (cpu_is_omap3430() || cpu_is_omap3630()) |
| omap_features |= OMAP3_HAS_IO_WAKEUP; |
| if (cpu_is_omap3630() || omap_rev() == OMAP3430_REV_ES3_1 || |
| omap_rev() == OMAP3430_REV_ES3_1_2) |
| omap_features |= OMAP3_HAS_IO_CHAIN_CTRL; |
| |
| omap_features |= OMAP3_HAS_SDRC; |
| |
| /* |
| * TODO: Get additional info (where applicable) |
| * e.g. Size of L2 cache. |
| */ |
| |
| omap3_cpuinfo(); |
| } |
| |
| void __init omap4xxx_check_features(void) |
| { |
| u32 si_type; |
| |
| if (cpu_is_omap443x()) |
| omap_features |= OMAP4_HAS_MPU_1GHZ; |
| |
| |
| if (cpu_is_omap446x()) { |
| si_type = |
| read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1); |
| switch ((si_type & (3 << 16)) >> 16) { |
| case 2: |
| /* High performance device */ |
| omap_features |= OMAP4_HAS_MPU_1_5GHZ; |
| break; |
| case 1: |
| default: |
| /* Standard device */ |
| omap_features |= OMAP4_HAS_MPU_1_2GHZ; |
| break; |
| } |
| } |
| } |
| |
| void __init ti81xx_check_features(void) |
| { |
| omap_features = OMAP3_HAS_NEON; |
| omap3_cpuinfo(); |
| } |
| |
| void __init omap3xxx_check_revision(void) |
| { |
| u32 cpuid, idcode; |
| u16 hawkeye; |
| u8 rev; |
| |
| /* |
| * We cannot access revision registers on ES1.0. |
| * If the processor type is Cortex-A8 and the revision is 0x0 |
| * it means its Cortex r0p0 which is 3430 ES1.0. |
| */ |
| cpuid = read_cpuid(CPUID_ID); |
| if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) { |
| omap_revision = OMAP3430_REV_ES1_0; |
| cpu_rev = "1.0"; |
| return; |
| } |
| |
| /* |
| * Detection for 34xx ES2.0 and above can be done with just |
| * hawkeye and rev. See TRM 1.5.2 Device Identification. |
| * Note that rev does not map directly to our defined processor |
| * revision numbers as ES1.0 uses value 0. |
| */ |
| idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| hawkeye = (idcode >> 12) & 0xffff; |
| rev = (idcode >> 28) & 0xff; |
| |
| switch (hawkeye) { |
| case 0xb7ae: |
| /* Handle 34xx/35xx devices */ |
| switch (rev) { |
| case 0: /* Take care of early samples */ |
| case 1: |
| omap_revision = OMAP3430_REV_ES2_0; |
| cpu_rev = "2.0"; |
| break; |
| case 2: |
| omap_revision = OMAP3430_REV_ES2_1; |
| cpu_rev = "2.1"; |
| break; |
| case 3: |
| omap_revision = OMAP3430_REV_ES3_0; |
| cpu_rev = "3.0"; |
| break; |
| case 4: |
| omap_revision = OMAP3430_REV_ES3_1; |
| cpu_rev = "3.1"; |
| break; |
| case 7: |
| /* FALLTHROUGH */ |
| default: |
| /* Use the latest known revision as default */ |
| omap_revision = OMAP3430_REV_ES3_1_2; |
| cpu_rev = "3.1.2"; |
| } |
| break; |
| case 0xb868: |
| /* |
| * Handle OMAP/AM 3505/3517 devices |
| * |
| * Set the device to be OMAP3517 here. Actual device |
| * is identified later based on the features. |
| */ |
| switch (rev) { |
| case 0: |
| omap_revision = OMAP3517_REV_ES1_0; |
| cpu_rev = "1.0"; |
| break; |
| case 1: |
| /* FALLTHROUGH */ |
| default: |
| omap_revision = OMAP3517_REV_ES1_1; |
| cpu_rev = "1.1"; |
| } |
| break; |
| case 0xb891: |
| /* Handle 36xx devices */ |
| |
| switch(rev) { |
| case 0: /* Take care of early samples */ |
| omap_revision = OMAP3630_REV_ES1_0; |
| cpu_rev = "1.0"; |
| break; |
| case 1: |
| omap_revision = OMAP3630_REV_ES1_1; |
| cpu_rev = "1.1"; |
| break; |
| case 2: |
| /* FALLTHROUGH */ |
| default: |
| omap_revision = OMAP3630_REV_ES1_2; |
| cpu_rev = "1.2"; |
| } |
| break; |
| case 0xb81e: |
| switch (rev) { |
| case 0: |
| omap_revision = TI8168_REV_ES1_0; |
| cpu_rev = "1.0"; |
| break; |
| case 1: |
| /* FALLTHROUGH */ |
| default: |
| omap_revision = TI8168_REV_ES1_1; |
| cpu_rev = "1.1"; |
| break; |
| } |
| break; |
| case 0xb944: |
| omap_revision = AM335X_REV_ES1_0; |
| cpu_rev = "1.0"; |
| case 0xb8f2: |
| switch (rev) { |
| case 0: |
| /* FALLTHROUGH */ |
| case 1: |
| omap_revision = TI8148_REV_ES1_0; |
| cpu_rev = "1.0"; |
| break; |
| case 2: |
| omap_revision = TI8148_REV_ES2_0; |
| cpu_rev = "2.0"; |
| break; |
| case 3: |
| /* FALLTHROUGH */ |
| default: |
| omap_revision = TI8148_REV_ES2_1; |
| cpu_rev = "2.1"; |
| break; |
| } |
| break; |
| default: |
| /* Unknown default to latest silicon rev as default */ |
| omap_revision = OMAP3630_REV_ES1_2; |
| cpu_rev = "1.2"; |
| pr_warn("Warning: unknown chip type; assuming OMAP3630ES1.2\n"); |
| } |
| } |
| |
| void __init omap4xxx_check_revision(void) |
| { |
| u32 idcode; |
| u16 hawkeye; |
| u8 rev; |
| |
| /* |
| * The IC rev detection is done with hawkeye and rev. |
| * Note that rev does not map directly to defined processor |
| * revision numbers as ES1.0 uses value 0. |
| */ |
| idcode = read_tap_reg(OMAP_TAP_IDCODE); |
| hawkeye = (idcode >> 12) & 0xffff; |
| rev = (idcode >> 28) & 0xf; |
| |
| /* |
| * Few initial 4430 ES2.0 samples IDCODE is same as ES1.0 |
| * Use ARM register to detect the correct ES version |
| */ |
| if (!rev && (hawkeye != 0xb94e) && (hawkeye != 0xb975)) { |
| idcode = read_cpuid(CPUID_ID); |
| rev = (idcode & 0xf) - 1; |
| } |
| |
| switch (hawkeye) { |
| case 0xb852: |
| switch (rev) { |
| case 0: |
| omap_revision = OMAP4430_REV_ES1_0; |
| break; |
| case 1: |
| default: |
| omap_revision = OMAP4430_REV_ES2_0; |
| } |
| break; |
| case 0xb95c: |
| switch (rev) { |
| case 3: |
| omap_revision = OMAP4430_REV_ES2_1; |
| break; |
| case 4: |
| omap_revision = OMAP4430_REV_ES2_2; |
| break; |
| case 6: |
| default: |
| omap_revision = OMAP4430_REV_ES2_3; |
| } |
| break; |
| case 0xb94e: |
| switch (rev) { |
| case 0: |
| default: |
| omap_revision = OMAP4460_REV_ES1_0; |
| break; |
| } |
| break; |
| case 0xb975: |
| switch (rev) { |
| case 0: |
| default: |
| omap_revision = OMAP4470_REV_ES1_0; |
| break; |
| } |
| break; |
| default: |
| /* Unknown default to latest silicon rev as default */ |
| omap_revision = OMAP4430_REV_ES2_3; |
| } |
| |
| pr_info("OMAP%04x ES%d.%d\n", omap_rev() >> 16, |
| ((omap_rev() >> 12) & 0xf), ((omap_rev() >> 8) & 0xf)); |
| } |
| |
| /* |
| * Set up things for map_io and processor detection later on. Gets called |
| * pretty much first thing from board init. For multi-omap, this gets |
| * cpu_is_omapxxxx() working accurately enough for map_io. Then we'll try to |
| * detect the exact revision later on in omap2_detect_revision() once map_io |
| * is done. |
| */ |
| void __init omap2_set_globals_tap(struct omap_globals *omap2_globals) |
| { |
| omap_revision = omap2_globals->class; |
| tap_base = omap2_globals->tap; |
| |
| if (cpu_is_omap34xx()) |
| tap_prod_id = 0x0210; |
| else |
| tap_prod_id = 0x0208; |
| } |