diff options
Diffstat (limited to 'src/cpu/intel/fsp_model_206ax/acpi.c')
-rw-r--r-- | src/cpu/intel/fsp_model_206ax/acpi.c | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/src/cpu/intel/fsp_model_206ax/acpi.c b/src/cpu/intel/fsp_model_206ax/acpi.c deleted file mode 100644 index 272f4863fa..0000000000 --- a/src/cpu/intel/fsp_model_206ax/acpi.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2009 coresystems GmbH - * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; version 2 of - * the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#include <types.h> -#include <console/console.h> -#include <arch/acpi.h> -#include <arch/acpigen.h> -#include <arch/cpu.h> -#include <cpu/x86/msr.h> -#include <cpu/intel/speedstep.h> -#include <cpu/intel/turbo.h> -#include <device/device.h> -#include "model_206ax.h" -#include "chip.h" - -static int get_cores_per_package(void) -{ - struct cpuinfo_x86 c; - struct cpuid_result result; - int cores = 1; - - get_fms(&c, cpuid_eax(1)); - if (c.x86 != 6) - return 1; - - result = cpuid_ext(0xb, 1); - cores = result.ebx & 0xff; - - return cores; -} - -static void generate_cstate_entries(acpi_cstate_t *cstates, - int c1, int c2, int c3) -{ - int cstate_count = 0; - - /* Count number of active C-states */ - if (c1 > 0) - ++cstate_count; - if (c2 > 0) - ++cstate_count; - if (c3 > 0) - ++cstate_count; - if (!cstate_count) - return; - - acpigen_write_package(cstate_count + 1); - acpigen_write_byte(cstate_count); - - /* Add an entry if the level is enabled */ - if (c1 > 0) { - cstates[c1].ctype = 1; - acpigen_write_CST_package_entry(&cstates[c1]); - } - if (c2 > 0) { - cstates[c2].ctype = 2; - acpigen_write_CST_package_entry(&cstates[c2]); - } - if (c3 > 0) { - cstates[c3].ctype = 3; - acpigen_write_CST_package_entry(&cstates[c3]); - } - - acpigen_pop_len(); -} - -static void generate_C_state_entries(void) -{ - struct cpu_info *info; - struct cpu_driver *cpu; - struct device *lapic; - struct cpu_intel_fsp_model_206ax_config *conf = NULL; - - /* Find the SpeedStep CPU in the device tree using magic APIC ID */ - lapic = dev_find_lapic(SPEEDSTEP_APIC_MAGIC); - if (!lapic) - return; - conf = lapic->chip_info; - if (!conf) - return; - - /* Find CPU map of supported C-states */ - info = cpu_info(); - if (!info) - return; - cpu = find_cpu_driver(info->cpu); - if (!cpu || !cpu->cstates) - return; - - acpigen_write_method("_CST", 0); - - /* If running on AC power */ - acpigen_emit_byte(0xa0); /* IfOp */ - acpigen_write_len_f(); /* PkgLength */ - acpigen_emit_namestring("PWRS"); - acpigen_emit_byte(0xa4); /* ReturnOp */ - generate_cstate_entries(cpu->cstates, conf->c1_acpower, - conf->c2_acpower, conf->c3_acpower); - acpigen_pop_len(); - - /* Else on battery power */ - acpigen_emit_byte(0xa4); /* ReturnOp */ - generate_cstate_entries(cpu->cstates, conf->c1_battery, - conf->c2_battery, conf->c3_battery); - acpigen_pop_len(); -} - -static acpi_tstate_t tss_table_fine[] = { - { 100, 1000, 0, 0x00, 0 }, - { 94, 940, 0, 0x1f, 0 }, - { 88, 880, 0, 0x1e, 0 }, - { 82, 820, 0, 0x1d, 0 }, - { 75, 760, 0, 0x1c, 0 }, - { 69, 700, 0, 0x1b, 0 }, - { 63, 640, 0, 0x1a, 0 }, - { 57, 580, 0, 0x19, 0 }, - { 50, 520, 0, 0x18, 0 }, - { 44, 460, 0, 0x17, 0 }, - { 38, 400, 0, 0x16, 0 }, - { 32, 340, 0, 0x15, 0 }, - { 25, 280, 0, 0x14, 0 }, - { 19, 220, 0, 0x13, 0 }, - { 13, 160, 0, 0x12, 0 }, -}; - -static acpi_tstate_t tss_table_coarse[] = { - { 100, 1000, 0, 0x00, 0 }, - { 88, 875, 0, 0x1f, 0 }, - { 75, 750, 0, 0x1e, 0 }, - { 63, 625, 0, 0x1d, 0 }, - { 50, 500, 0, 0x1c, 0 }, - { 38, 375, 0, 0x1b, 0 }, - { 25, 250, 0, 0x1a, 0 }, - { 13, 125, 0, 0x19, 0 }, -}; - -static void generate_T_state_entries(int core, int cores_per_package) -{ - /* Indicate SW_ALL coordination for T-states */ - acpigen_write_TSD_package(core, cores_per_package, SW_ALL); - - /* Indicate FFixedHW so OS will use MSR */ - acpigen_write_empty_PTC(); - - /* Set a T-state limit that can be modified in NVS */ - acpigen_write_TPC("\\TLVL"); - - /* - * CPUID.(EAX=6):EAX[5] indicates support - * for extended throttle levels. - */ - if (cpuid_eax(6) & (1 << 5)) - acpigen_write_TSS_package( - ARRAY_SIZE(tss_table_fine), tss_table_fine); - else - acpigen_write_TSS_package( - ARRAY_SIZE(tss_table_coarse), tss_table_coarse); -} - -static int calculate_power(int tdp, int p1_ratio, int ratio) -{ - u32 m; - u32 power; - - /* - * M = ((1.1 - ((p1_ratio - ratio) * 0.00625)) / 1.1) ^ 2 - * - * Power = (ratio / p1_ratio) * m * tdp - */ - - m = (110000 - ((p1_ratio - ratio) * 625)) / 11; - m = (m * m) / 1000; - - power = ((ratio * 100000 / p1_ratio) / 100); - power *= (m / 100) * (tdp / 1000); - power /= 1000; - - return (int)power; -} - -static void generate_P_state_entries(int core, int cores_per_package) -{ - int ratio_min, ratio_max, ratio_turbo, ratio_step; - int coord_type, power_max, power_unit, num_entries; - int ratio, power, clock, clock_max; - msr_t msr; - - /* Determine P-state coordination type from MISC_PWR_MGMT[0] */ - msr = rdmsr(MSR_MISC_PWR_MGMT); - if (msr.lo & MISC_PWR_MGMT_EIST_HW_DIS) - coord_type = SW_ANY; - else - coord_type = HW_ALL; - - /* Get bus ratio limits and calculate clock speeds */ - msr = rdmsr(MSR_PLATFORM_INFO); - ratio_min = (msr.hi >> (40-32)) & 0xff; /* Max Efficiency Ratio */ - - /* Determine if this CPU has configurable TDP */ - if (cpu_config_tdp_levels()) { - /* Set max ratio to nominal TDP ratio */ - msr = rdmsr(MSR_CONFIG_TDP_NOMINAL); - ratio_max = msr.lo & 0xff; - } else { - /* Max Non-Turbo Ratio */ - ratio_max = (msr.lo >> 8) & 0xff; - } - clock_max = ratio_max * SANDYBRIDGE_BCLK; - - /* Calculate CPU TDP in mW */ - msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); - power_unit = 2 << ((msr.lo & 0xf) - 1); - msr = rdmsr(MSR_PKG_POWER_SKU); - power_max = ((msr.lo & 0x7fff) / power_unit) * 1000; - - /* Write _PCT indicating use of FFixedHW */ - acpigen_write_empty_PCT(); - - /* Write _PPC with no limit on supported P-state */ - acpigen_write_PPC_NVS(); - - /* Write PSD indicating configured coordination type */ - acpigen_write_PSD_package(core, cores_per_package, coord_type); - - /* Add P-state entries in _PSS table */ - acpigen_write_name("_PSS"); - - /* Determine ratio points */ - ratio_step = PSS_RATIO_STEP; - num_entries = (ratio_max - ratio_min) / ratio_step; - while (num_entries > PSS_MAX_ENTRIES-1) { - ratio_step <<= 1; - num_entries >>= 1; - } - - /* P[T] is Turbo state if enabled */ - if (get_turbo_state() == TURBO_ENABLED) { - /* _PSS package count including Turbo */ - acpigen_write_package(num_entries + 2); - - msr = rdmsr(MSR_TURBO_RATIO_LIMIT); - ratio_turbo = msr.lo & 0xff; - - /* Add entry for Turbo ratio */ - acpigen_write_PSS_package( - clock_max + 1, /*MHz*/ - power_max, /*mW*/ - PSS_LATENCY_TRANSITION, /*lat1*/ - PSS_LATENCY_BUSMASTER, /*lat2*/ - ratio_turbo << 8, /*control*/ - ratio_turbo << 8); /*status*/ - } else { - /* _PSS package count without Turbo */ - acpigen_write_package(num_entries + 1); - } - - /* First regular entry is max non-turbo ratio */ - acpigen_write_PSS_package( - clock_max, /*MHz*/ - power_max, /*mW*/ - PSS_LATENCY_TRANSITION, /*lat1*/ - PSS_LATENCY_BUSMASTER, /*lat2*/ - ratio_max << 8, /*control*/ - ratio_max << 8); /*status*/ - - /* Generate the remaining entries */ - for (ratio = ratio_min + ((num_entries - 1) * ratio_step); - ratio >= ratio_min; ratio -= ratio_step) { - - /* Calculate power at this ratio */ - power = calculate_power(power_max, ratio_max, ratio); - clock = ratio * SANDYBRIDGE_BCLK; - - acpigen_write_PSS_package( - clock, /*MHz*/ - power, /*mW*/ - PSS_LATENCY_TRANSITION, /*lat1*/ - PSS_LATENCY_BUSMASTER, /*lat2*/ - ratio << 8, /*control*/ - ratio << 8); /*status*/ - } - - /* Fix package length */ - acpigen_pop_len(); -} - -void generate_cpu_entries(device_t device) -{ - int coreID, cpuID, pcontrol_blk = PMB0_BASE, plen = 6; - int totalcores = dev_count_cpu(); - int cores_per_package = get_cores_per_package(); - int numcpus = totalcores/cores_per_package; - - printk(BIOS_DEBUG, "Found %d CPU(s) with %d core(s) each.\n", - numcpus, cores_per_package); - - for (cpuID = 1; cpuID <= numcpus; cpuID++) { - for (coreID=1; coreID<=cores_per_package; coreID++) { - if (coreID>1) { - pcontrol_blk = 0; - plen = 0; - } - - /* Generate processor \_PR.CPUx */ - acpigen_write_processor( - (cpuID-1)*cores_per_package+coreID-1, - pcontrol_blk, plen); - - /* Generate P-state tables */ - generate_P_state_entries( - cpuID-1, cores_per_package); - - /* Generate C-state tables */ - generate_C_state_entries(); - - /* Generate T-state tables */ - generate_T_state_entries( - cpuID-1, cores_per_package); - - acpigen_pop_len(); - } - } -} - -struct chip_operations cpu_intel_model_206ax_ops = { - CHIP_NAME("Intel SandyBridge/IvyBridge CPU") -}; |