2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2009 coresystems GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; version 2 of
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
22 #include <console/console.h>
23 #include <device/device.h>
24 #include <device/pci.h>
27 #include <cpu/x86/mtrr.h>
28 #include <cpu/x86/msr.h>
29 #include <cpu/x86/lapic.h>
30 #include <cpu/intel/microcode.h>
31 #include <cpu/intel/hyperthreading.h>
32 #include <cpu/intel/speedstep.h>
33 #include <cpu/intel/acpi.h>
34 #include <cpu/x86/cache.h>
35 #include <cpu/x86/name.h>
38 static const uint32_t microcode_updates[] = {
39 #include "microcode-1624-m206e839.h"
40 #include "microcode-1729-m206ec54.h"
41 #include "microcode-1869-m806ec59.h"
42 /* Dummy terminator */
49 #define IA32_FEATURE_CONTROL 0x003a
51 #define CPUID_VMX (1 << 5)
52 #define CPUID_SMX (1 << 6)
53 static void enable_vmx(void)
55 struct cpuid_result regs;
58 msr = rdmsr(IA32_FEATURE_CONTROL);
60 if (msr.lo & (1 << 0)) {
61 /* VMX locked. If we set it again we get an illegal
68 if (regs.ecx & CPUID_VMX) {
70 if (regs.ecx & CPUID_SMX)
74 wrmsr(IA32_FEATURE_CONTROL, msr);
76 msr.lo |= (1 << 0); /* Set lock bit */
78 wrmsr(IA32_FEATURE_CONTROL, msr);
81 #define PMG_CST_CONFIG_CONTROL 0xe2
82 #define PMG_IO_BASE_ADDR 0xe3
83 #define PMG_IO_CAPTURE_ADDR 0xe4
85 #define HIGHEST_CLEVEL 3
86 static void configure_c_states(void)
90 msr = rdmsr(PMG_CST_CONFIG_CONTROL);
91 msr.lo |= (1 << 15); // config lock until next reset.
92 msr.lo |= (1 << 10); // Enable I/O MWAIT redirection for C-States
93 msr.lo &= ~(1 << 9); // Issue a single stop grant cycle upon stpclk
94 // TODO Do we want Deep C4 and Dynamic L2 shrinking?
96 /* Number of supported C-States */
98 msr.lo |= HIGHEST_CLEVEL; // support at most C3
100 wrmsr(PMG_CST_CONFIG_CONTROL, msr);
102 /* Set Processor MWAIT IO BASE (P_BLK) */
104 msr.lo = ((PMB0_BASE + 4) & 0xffff) | (((PMB1_BASE + 9) & 0xffff) << 16);
105 wrmsr(PMG_IO_BASE_ADDR, msr);
107 /* set C_LVL controls */
109 msr.lo = (PMB0_BASE + 4) | ((HIGHEST_CLEVEL - 2) << 16); // -2 because LVL0+1 aren't counted
110 wrmsr(PMG_IO_CAPTURE_ADDR, msr);
113 #define IA32_MISC_ENABLE 0x1a0
114 static void configure_misc(void)
118 msr = rdmsr(IA32_MISC_ENABLE);
119 msr.lo |= (1 << 3); /* TM1 enable */
120 msr.lo |= (1 << 13); /* TM2 enable */
121 msr.lo |= (1 << 17); /* Bidirectional PROCHOT# */
123 msr.lo |= (1 << 10); /* FERR# multiplexing */
125 // TODO: Only if IA32_PLATFORM_ID[17] = 0 and IA32_PLATFORM_ID[50] = 1
126 msr.lo |= (1 << 16); /* Enhanced SpeedStep Enable */
128 // TODO Do we want Deep C4 and Dynamic L2 shrinking?
129 wrmsr(IA32_MISC_ENABLE, msr);
131 msr.lo |= (1 << 20); /* Lock Enhanced SpeedStep Enable */
132 wrmsr(IA32_MISC_ENABLE, msr);
134 // set maximum CPU speed
135 msr = rdmsr(IA32_PERF_STS);
136 int busratio_max=(msr.hi >> (40-32)) & 0x1f;
138 msr = rdmsr(IA32_PLATFORM_ID);
139 int vid_max=msr.lo & 0x3f;
142 msr.lo |= busratio_max << 8;
145 wrmsr(IA32_PERF_CTL, msr);
148 #define PIC_SENS_CFG 0x1aa
149 static void configure_pic_thermal_sensors(void)
153 msr = rdmsr(PIC_SENS_CFG);
155 msr.lo |= (1 << 21); // inter-core lock TM1
156 msr.lo |= (1 << 4); // Enable bypass filter
158 wrmsr(PIC_SENS_CFG, msr);
162 static unsigned ehci_debug_addr;
165 static void model_6ex_init(device_t cpu)
167 char processor_name[49];
169 /* Turn on caching if we haven't already */
172 /* Update the microcode */
173 intel_update_microcode(microcode_updates);
175 /* Print processor name */
176 fill_processor_name(processor_name);
177 printk(BIOS_INFO, "CPU: %s.\n", processor_name);
180 // Is this caution really needed?
182 ehci_debug_addr = get_ehci_debug();
191 set_ehci_debug(ehci_debug_addr);
194 /* Enable the local cpu apics */
197 /* Enable virtualization */
200 /* Configure C States */
201 configure_c_states();
203 /* Configure Enhanced SpeedStep and Thermal Sensors */
206 /* PIC thermal sensor control */
207 configure_pic_thermal_sensors();
209 /* Start up my cpu siblings */
210 intel_sibling_init(cpu);
213 static struct device_operations cpu_dev_ops = {
214 .init = model_6ex_init,
217 static struct cpu_device_id cpu_table[] = {
218 { X86_VENDOR_INTEL, 0x06e0 }, /* Intel Core Solo/Core Duo */
219 { X86_VENDOR_INTEL, 0x06e8 }, /* Intel Core Solo/Core Duo */
220 { X86_VENDOR_INTEL, 0x06ec }, /* Intel Core Solo/Core Duo */
224 static const struct cpu_driver driver __cpu_driver = {
226 .id_table = cpu_table,