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/x86/cache.h>
33 #include <cpu/x86/mtrr.h>
34 #include <usbdebug_direct.h>
36 static const uint32_t microcode_updates[] = {
37 #include "microcode-1624-m206e839.h"
38 #include "microcode-1729-m206ec54.h"
39 #include "microcode-1869-m806ec59.h"
40 /* Dummy terminator */
47 static inline void strcpy(char *dst, char *src)
49 while (*src) *dst++ = *src++;
52 static void fill_processor_name(char *processor_name)
54 struct cpuid_result regs;
55 char temp_processor_name[49];
56 char *processor_name_start;
57 unsigned int *name_as_ints = (unsigned int *)temp_processor_name;
61 regs = cpuid(0x80000002 + i);
62 name_as_ints[i*4 + 0] = regs.eax;
63 name_as_ints[i*4 + 1] = regs.ebx;
64 name_as_ints[i*4 + 2] = regs.ecx;
65 name_as_ints[i*4 + 3] = regs.edx;
68 temp_processor_name[48] = 0;
70 /* Skip leading spaces */
71 processor_name_start = temp_processor_name;
72 while (*processor_name_start == ' ')
73 processor_name_start++;
75 memset(processor_name, 0, 49);
76 strcpy(processor_name, processor_name_start);
79 #define IA32_FEATURE_CONTROL 0x003a
81 #define CPUID_VMX (1 << 5)
82 #define CPUID_SMX (1 << 6)
83 static void enable_vmx(void)
85 struct cpuid_result regs;
88 msr = rdmsr(IA32_FEATURE_CONTROL);
90 if (msr.lo & (1 << 0)) {
91 /* VMX locked. If we set it again we get an illegal
98 if (regs.ecx & CPUID_VMX) {
100 if (regs.ecx & CPUID_SMX)
104 wrmsr(IA32_FEATURE_CONTROL, msr);
106 msr.lo |= (1 << 0); /* Set lock bit */
108 wrmsr(IA32_FEATURE_CONTROL, msr);
111 #define PMG_CST_CONFIG_CONTROL 0xe2
112 #define PMG_IO_BASE_ADDR 0xe3
113 #define PMG_IO_CAPTURE_ADDR 0xe4
115 /* MWAIT coordination I/O base address. This must match
116 * the \_PR_.CPU0 PM base address.
118 #define PMB0_BASE 0x510
120 /* PMB1: I/O port that triggers SMI once cores are in the same state.
121 * See CSM Trigger, at PMG_CST_CONFIG_CONTROL[6:4]
123 #define PMB1_BASE 0x800
124 #define HIGHEST_CLEVEL 3
125 static void configure_c_states(void)
129 msr = rdmsr(PMG_CST_CONFIG_CONTROL);
130 msr.lo |= (1 << 15); // config lock until next reset.
131 msr.lo |= (1 << 10); // Enable I/O MWAIT redirection for C-States
132 msr.lo &= ~(1 << 9); // Issue a single stop grant cycle upon stpclk
133 // TODO Do we want Deep C4 and Dynamic L2 shrinking?
135 /* Number of supported C-States */
137 msr.lo |= HIGHEST_CLEVEL; // support at most C3
139 wrmsr(PMG_CST_CONFIG_CONTROL, msr);
141 /* Set Processor MWAIT IO BASE (P_BLK) */
143 msr.lo = ((PMB0_BASE + 4) & 0xffff) | (((PMB1_BASE + 9) & 0xffff) << 16);
144 wrmsr(PMG_IO_BASE_ADDR, msr);
146 /* set C_LVL controls */
148 msr.lo = (PMB0_BASE + 4) | ((HIGHEST_CLEVEL - 2) << 16); // -2 because LVL0+1 aren't counted
149 wrmsr(PMG_IO_CAPTURE_ADDR, msr);
152 #define IA32_MISC_ENABLE 0x1a0
153 static void configure_misc(void)
157 msr = rdmsr(IA32_MISC_ENABLE);
158 msr.lo |= (1 << 3); /* TM1 enable */
159 msr.lo |= (1 << 13); /* TM2 enable */
160 msr.lo |= (1 << 17); /* Bidirectional PROCHOT# */
162 msr.lo |= (1 << 10); /* FERR# multiplexing */
164 // TODO: Only if IA32_PLATFORM_ID[17] = 0 and IA32_PLATFORM_ID[50] = 1
165 msr.lo |= (1 << 16); /* Enhanced SpeedStep Enable */
167 // TODO Do we want Deep C4 and Dynamic L2 shrinking?
168 wrmsr(IA32_MISC_ENABLE, msr);
170 msr.lo |= (1 << 20); /* Lock Enhanced SpeedStep Enable */
171 wrmsr(IA32_MISC_ENABLE, msr);
174 #define PIC_SENS_CFG 0x1aa
175 static void configure_pic_thermal_sensors(void)
179 msr = rdmsr(PIC_SENS_CFG);
181 msr.lo |= (1 << 21); // inter-core lock TM1
182 msr.lo |= (1 << 4); // Enable bypass filter
184 wrmsr(PIC_SENS_CFG, msr);
187 #if CONFIG_USBDEBUG_DIRECT
188 static unsigned ehci_debug_addr;
191 static void model_6ex_init(device_t cpu)
193 char processor_name[49];
195 /* Turn on caching if we haven't already */
198 /* Update the microcode */
199 intel_update_microcode(microcode_updates);
201 /* Print processor name */
202 fill_processor_name(processor_name);
203 printk(BIOS_INFO, "CPU: %s.\n", processor_name);
205 #if CONFIG_USBDEBUG_DIRECT
206 // Is this caution really needed?
208 ehci_debug_addr = get_ehci_debug();
216 #if CONFIG_USBDEBUG_DIRECT
217 set_ehci_debug(ehci_debug_addr);
220 /* Enable the local cpu apics */
223 /* Enable virtualization */
226 /* Configure C States */
227 configure_c_states();
229 /* Configure Enhanced SpeedStep and Thermal Sensors */
232 /* PIC thermal sensor control */
233 configure_pic_thermal_sensors();
235 /* Start up my cpu siblings */
236 intel_sibling_init(cpu);
239 static struct device_operations cpu_dev_ops = {
240 .init = model_6ex_init,
243 static struct cpu_device_id cpu_table[] = {
244 { X86_VENDOR_INTEL, 0x06e0 }, /* Intel Core Solo/Core Duo */
245 { X86_VENDOR_INTEL, 0x06e8 }, /* Intel Core Solo/Core Duo */
246 { X86_VENDOR_INTEL, 0x06ec }, /* Intel Core Solo/Core Duo */
250 static const struct cpu_driver driver __cpu_driver = {
252 .id_table = cpu_table,