diff options
Diffstat (limited to 'arch/arm/cpu/arm926ejs/omap/cpuinfo.c')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/omap/cpuinfo.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/arch/arm/cpu/arm926ejs/omap/cpuinfo.c b/arch/arm/cpu/arm926ejs/omap/cpuinfo.c deleted file mode 100644 index 587d99a2bb..0000000000 --- a/arch/arm/cpu/arm926ejs/omap/cpuinfo.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - * OMAP1 CPU identification code - * - * Copyright (C) 2004 Nokia Corporation - * Written by Tony Lindgren <tony@atomide.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 <common.h> -#include <command.h> -#include <linux/compiler.h> - -#if defined(CONFIG_OMAP) - -#define omap_readw(x) *(volatile unsigned short *)(x) -#define omap_readl(x) *(volatile unsigned long *)(x) - -#define OMAP_DIE_ID_0 0xfffe1800 -#define OMAP_DIE_ID_1 0xfffe1804 -#define OMAP_PRODUCTION_ID_0 0xfffe2000 -#define OMAP_PRODUCTION_ID_1 0xfffe2004 -#define OMAP32_ID_0 0xfffed400 -#define OMAP32_ID_1 0xfffed404 - -struct omap_id { - u16 jtag_id; /* Used to determine OMAP type */ - u8 die_rev; /* Processor revision */ - u32 omap_id; /* OMAP revision */ - u32 type; /* Cpu id bits [31:08], cpu class bits [07:00] */ -}; - -/* Register values to detect the OMAP version */ -static struct omap_id omap_ids[] = { - { .jtag_id = 0xb574, .die_rev = 0x2, .omap_id = 0x03310315, .type = 0x03100000}, - { .jtag_id = 0x355f, .die_rev = 0x0, .omap_id = 0x03320000, .type = 0x07300100}, - { .jtag_id = 0xb55f, .die_rev = 0x0, .omap_id = 0x03320000, .type = 0x07300300}, - { .jtag_id = 0xb470, .die_rev = 0x0, .omap_id = 0x03310100, .type = 0x15100000}, - { .jtag_id = 0xb576, .die_rev = 0x0, .omap_id = 0x03320000, .type = 0x16100000}, - { .jtag_id = 0xb576, .die_rev = 0x2, .omap_id = 0x03320100, .type = 0x16110000}, - { .jtag_id = 0xb576, .die_rev = 0x3, .omap_id = 0x03320100, .type = 0x16100c00}, - { .jtag_id = 0xb576, .die_rev = 0x0, .omap_id = 0x03320200, .type = 0x16100d00}, - { .jtag_id = 0xb613, .die_rev = 0x0, .omap_id = 0x03320300, .type = 0x1610ef00}, - { .jtag_id = 0xb613, .die_rev = 0x0, .omap_id = 0x03320300, .type = 0x1610ef00}, - { .jtag_id = 0xb576, .die_rev = 0x1, .omap_id = 0x03320100, .type = 0x16110000}, - { .jtag_id = 0xb58c, .die_rev = 0x2, .omap_id = 0x03320200, .type = 0x16110b00}, - { .jtag_id = 0xb58c, .die_rev = 0x3, .omap_id = 0x03320200, .type = 0x16110c00}, - { .jtag_id = 0xb65f, .die_rev = 0x0, .omap_id = 0x03320400, .type = 0x16212300}, - { .jtag_id = 0xb65f, .die_rev = 0x1, .omap_id = 0x03320400, .type = 0x16212300}, - { .jtag_id = 0xb65f, .die_rev = 0x1, .omap_id = 0x03320500, .type = 0x16212300}, - { .jtag_id = 0xb5f7, .die_rev = 0x0, .omap_id = 0x03330000, .type = 0x17100000}, - { .jtag_id = 0xb5f7, .die_rev = 0x1, .omap_id = 0x03330100, .type = 0x17100000}, - { .jtag_id = 0xb5f7, .die_rev = 0x2, .omap_id = 0x03330100, .type = 0x17100000}, -}; - -/* - * Get OMAP type from PROD_ID. - * 1710 has the PROD_ID in bits 15:00, not in 16:01 as documented in TRM. - * 1510 PROD_ID is empty, and 1610 PROD_ID does not make sense. - * Undocumented register in TEST BLOCK is used as fallback; This seems to - * work on 1510, 1610 & 1710. The official way hopefully will work in future - * processors. - */ -static u16 omap_get_jtag_id(void) -{ - u32 prod_id, omap_id; - - prod_id = omap_readl(OMAP_PRODUCTION_ID_1); - omap_id = omap_readl(OMAP32_ID_1); - - /* Check for unusable OMAP_PRODUCTION_ID_1 on 1611B/5912 and 730 */ - if (((prod_id >> 20) == 0) || (prod_id == omap_id)) - prod_id = 0; - else - prod_id &= 0xffff; - - if (prod_id) - return prod_id; - - /* Use OMAP32_ID_1 as fallback */ - prod_id = ((omap_id >> 12) & 0xffff); - - return prod_id; -} - -/* - * Get OMAP revision from DIE_REV. - * Early 1710 processors may have broken OMAP_DIE_ID, it contains PROD_ID. - * Undocumented register in the TEST BLOCK is used as fallback. - * REVISIT: This does not seem to work on 1510 - */ -static u8 omap_get_die_rev(void) -{ - u32 die_rev; - - die_rev = omap_readl(OMAP_DIE_ID_1); - - /* Check for broken OMAP_DIE_ID on early 1710 */ - if (((die_rev >> 12) & 0xffff) == omap_get_jtag_id()) - die_rev = 0; - - die_rev = (die_rev >> 17) & 0xf; - if (die_rev) - return die_rev; - - die_rev = (omap_readl(OMAP32_ID_1) >> 28) & 0xf; - - return die_rev; -} - -static unsigned long dpll1(void) -{ - unsigned short pll_ctl_val = omap_readw(DPLL_CTL_REG); - unsigned long rate; - - rate = CONFIG_SYS_CLK_FREQ; /* Base xtal rate */ - if (pll_ctl_val & 0x10) { - /* PLL enabled, apply multiplier and divisor */ - if (pll_ctl_val & 0xf80) - rate *= (pll_ctl_val & 0xf80) >> 7; - rate /= ((pll_ctl_val & 0x60) >> 5) + 1; - } else { - /* PLL disabled, apply bypass divisor */ - switch (pll_ctl_val & 0xc) { - case 0: - break; - case 0x4: - rate /= 2; - break; - default: - rate /= 4; - break; - } - } - - return rate; -} - -static unsigned long armcore(void) -{ - unsigned short arm_ckctl = omap_readw(ARM_CKCTL); - - return (dpll1() >> ((arm_ckctl & 0x0030) >> 4)); -} - -int print_cpuinfo (void) -{ - int i; - u16 jtag_id; - u8 die_rev; - u32 omap_id; - u8 cpu_type; - __maybe_unused u32 system_serial_high; - __maybe_unused u32 system_serial_low; - u32 system_rev = 0; - - jtag_id = omap_get_jtag_id(); - die_rev = omap_get_die_rev(); - omap_id = omap_readl(OMAP32_ID_0); - -#ifdef DEBUG - printf("OMAP_DIE_ID_0: 0x%08x\n", omap_readl(OMAP_DIE_ID_0)); - printf("OMAP_DIE_ID_1: 0x%08x DIE_REV: %i\n", - omap_readl(OMAP_DIE_ID_1), - (omap_readl(OMAP_DIE_ID_1) >> 17) & 0xf); - printf("OMAP_PRODUCTION_ID_0: 0x%08x\n", omap_readl(OMAP_PRODUCTION_ID_0)); - printf("OMAP_PRODUCTION_ID_1: 0x%08x JTAG_ID: 0x%04x\n", - omap_readl(OMAP_PRODUCTION_ID_1), - omap_readl(OMAP_PRODUCTION_ID_1) & 0xffff); - printf("OMAP32_ID_0: 0x%08x\n", omap_readl(OMAP32_ID_0)); - printf("OMAP32_ID_1: 0x%08x\n", omap_readl(OMAP32_ID_1)); - printf("JTAG_ID: 0x%04x DIE_REV: %i\n", jtag_id, die_rev); -#endif - - system_serial_high = omap_readl(OMAP_DIE_ID_0); - system_serial_low = omap_readl(OMAP_DIE_ID_1); - - /* First check only the major version in a safe way */ - for (i = 0; i < ARRAY_SIZE(omap_ids); i++) { - if (jtag_id == (omap_ids[i].jtag_id)) { - system_rev = omap_ids[i].type; - break; - } - } - - /* Check if we can find the die revision */ - for (i = 0; i < ARRAY_SIZE(omap_ids); i++) { - if (jtag_id == omap_ids[i].jtag_id && die_rev == omap_ids[i].die_rev) { - system_rev = omap_ids[i].type; - break; - } - } - - /* Finally check also the omap_id */ - for (i = 0; i < ARRAY_SIZE(omap_ids); i++) { - if (jtag_id == omap_ids[i].jtag_id - && die_rev == omap_ids[i].die_rev - && omap_id == omap_ids[i].omap_id) { - system_rev = omap_ids[i].type; - break; - } - } - - /* Add the cpu class info (7xx, 15xx, 16xx, 24xx) */ - cpu_type = system_rev >> 24; - - switch (cpu_type) { - case 0x07: - system_rev |= 0x07; - break; - case 0x03: - case 0x15: - system_rev |= 0x15; - break; - case 0x16: - case 0x17: - system_rev |= 0x16; - break; - case 0x24: - system_rev |= 0x24; - break; - default: - printf("Unknown OMAP cpu type: 0x%02x\n", cpu_type); - } - - printf("CPU: OMAP%04x", system_rev >> 16); - if ((system_rev >> 8) & 0xff) - printf("%x", (system_rev >> 8) & 0xff); -#ifdef DEBUG - printf(" revision %i handled as %02xxx id: %08x%08x", - die_rev, system_rev & 0xff, system_serial_low, system_serial_high); -#endif - printf(" at %ld.%01ld MHz (DPLL1=%ld.%01ld MHz)\n", - armcore() / 1000000, (armcore() / 100000) % 10, - dpll1() / 1000000, (dpll1() / 100000) % 10); - - return 0; -} - -#endif /* #if defined(CONFIG_OMAP) */ |