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Diffstat (limited to 'src/cpu/intel/fsp_model_406dx/acpi.c')
-rw-r--r--src/cpu/intel/fsp_model_406dx/acpi.c321
1 files changed, 0 insertions, 321 deletions
diff --git a/src/cpu/intel/fsp_model_406dx/acpi.c b/src/cpu/intel/fsp_model_406dx/acpi.c
deleted file mode 100644
index 078905deac..0000000000
--- a/src/cpu/intel/fsp_model_406dx/acpi.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * 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.
- */
-
-#include <types.h>
-#include <commonlib/helpers.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 <delay.h>
-#include <device/device.h>
-#include <device/pci.h>
-#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 int get_core_frequency_mhz(int ratio)
-{
- int fsb, core_freq;
-
- /* Get BCLK - different SKUs can have different BCLK */
- fsb = get_timer_fsb();
-
- printk(BIOS_DEBUG, "BCLK:%d MHz ratio:%d\n", fsb, ratio);
-
- core_freq = DIV_ROUND_CLOSEST(fsb * ratio, 100) * 100;
- printk(BIOS_DEBUG, "core frequency for ratio(%d) %dMHz\n", ratio, core_freq);
- return core_freq;
-}
-
-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 = get_core_frequency_mhz(ratio_max);
-
- /* 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 = get_core_frequency_mhz(ratio);
-
- 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(struct device *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();
- }
- }
-
- /* PPKG is usually used for thermal management
- of the first and only package. */
- acpigen_write_processor_package("PPKG", 0, cores_per_package);
-
- /* Add a method to notify processor nodes */
- acpigen_write_processor_cnot(cores_per_package);
-}
-
-struct chip_operations cpu_intel_model_406dx_ops = {
- CHIP_NAME("Intel Rangeley CPU")
-};