From 58562405c8c416a415652516b8af31b204b4ff0d Mon Sep 17 00:00:00 2001 From: Martin Roth Date: Sun, 11 Oct 2015 10:36:26 +0200 Subject: Revert "Remove FSP Rangeley SOC and mohonpeak board support" This chip is still being used and should not have been deleted. It's a current intel chip, and doesn't even require an ME binary. This reverts commit 959478a763c16688d43752adbae2c76e7764da45. Change-Id: I78594871f87af6e882a245077b59727e15f8021a Signed-off-by: Martin Roth Reviewed-on: http://review.coreboot.org/11860 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones Reviewed-by: Stefan Reinauer --- src/cpu/intel/fsp_model_406dx/acpi.c | 306 +++++++++++++++++++++++++++++++++++ 1 file changed, 306 insertions(+) create mode 100644 src/cpu/intel/fsp_model_406dx/acpi.c (limited to 'src/cpu/intel/fsp_model_406dx/acpi.c') diff --git a/src/cpu/intel/fsp_model_406dx/acpi.c b/src/cpu/intel/fsp_model_406dx/acpi.c new file mode 100644 index 0000000000..abc35ad92a --- /dev/null +++ b/src/cpu/intel/fsp_model_406dx/acpi.c @@ -0,0 +1,306 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2009 coresystems GmbH + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * Copyright (C) 2013 Sage Electronic Engineering, LLC. + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "model_406dx.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_C_state_entries(void) +{ + struct cpu_info *info; + struct cpu_driver *cpu; + struct device *lapic; + struct cpu_intel_model_406dx_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_emit_byte(0x14); /* MethodOp */ + acpigen_write_len_f(); /* PkgLength */ + acpigen_emit_namestring("_CST"); + acpigen_emit_byte(0x00); /* No Arguments */ + + /* If running on AC power */ + acpigen_emit_byte(0xa0); /* IfOp */ + acpigen_write_len_f(); /* PkgLength */ + acpigen_emit_namestring("PWRS"); + acpigen_emit_byte(0xa4); /* ReturnOp */ + acpigen_pop_len(); + + /* Else on battery power */ + acpigen_emit_byte(0xa4); /* ReturnOp */ + 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, num_entries; + int ratio, power, clock, clock_max; + msr_t msr; + + /* Rangeley uses hardware only control */ + 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 * RANGELEY_BCLK; + + /* Calculate CPU TDP in mW */ + msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); + power_max = 2 << ((msr.lo & 0xf) - 1); + + + /* 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 * RANGELEY_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_406dx_ops = { + CHIP_NAME("Intel Rangeley CPU") +}; -- cgit v1.2.3