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/name.h>
35 static const uint32_t microcode_updates[] = {
36 /* Dummy terminator */
43 static void init_timer(void)
45 /* Set the apic timer to no interrupts and periodic mode */
46 lapic_write(LAPIC_LVTT, (1 << 17)|(1<< 16)|(0 << 12)|(0 << 0));
48 /* Set the divider to 1, no divider */
49 lapic_write(LAPIC_TDCR, LAPIC_TDR_DIV_1);
51 /* Set the initial counter to 0xffffffff */
52 lapic_write(LAPIC_TMICT, 0xffffffff);
55 #define IA32_FEATURE_CONTROL 0x003a
57 #define CPUID_VMX (1 << 5)
58 #define CPUID_SMX (1 << 6)
59 static void enable_vmx(void)
61 struct cpuid_result regs;
64 msr = rdmsr(IA32_FEATURE_CONTROL);
66 if (msr.lo & (1 << 0)) {
67 /* VMX locked. If we set it again we get an illegal
74 if (regs.ecx & CPUID_VMX) {
76 if (regs.ecx & CPUID_SMX)
80 wrmsr(IA32_FEATURE_CONTROL, msr);
82 msr.lo |= (1 << 0); /* Set lock bit */
84 wrmsr(IA32_FEATURE_CONTROL, msr);
87 #define PMG_CST_CONFIG_CONTROL 0xe2
88 #define PMG_IO_BASE_ADDR 0xe3
89 #define PMG_IO_CAPTURE_ADDR 0xe4
91 #define PMB0_BASE 0x580
92 #define PMB1_BASE 0x800
94 static void configure_c_states(void)
98 msr = rdmsr(PMG_CST_CONFIG_CONTROL);
100 msr.lo |= (1 << 15); // config lock until next reset
101 msr.lo |= (1 << 14); // Deeper Sleep
102 msr.lo |= (1 << 10); // Enable IO MWAIT redirection
103 msr.lo &= ~(1 << 9); // Issue a single stop grant cycle upon stpclk
104 msr.lo |= (1 << 3); // Dynamic L2
106 wrmsr(PMG_CST_CONFIG_CONTROL, msr);
108 /* Set Processor MWAIT IO BASE */
110 msr.lo = ((PMB0_BASE + 4) & 0xffff) | (((PMB1_BASE + 9) & 0xffff) << 16);
111 wrmsr(PMG_IO_BASE_ADDR, msr);
113 /* Set IO Capture Address */
115 msr.lo = ((PMB0_BASE + 4) & 0xffff) | (( CST_RANGE & 0xffff) << 16);
116 wrmsr(PMG_IO_CAPTURE_ADDR, msr);
119 #define IA32_MISC_ENABLE 0x1a0
120 static void configure_misc(void)
124 msr = rdmsr(IA32_MISC_ENABLE);
125 msr.lo |= (1 << 3); /* TM1 enable */
126 msr.lo |= (1 << 13); /* TM2 enable */
127 msr.lo |= (1 << 17); /* Bidirectional PROCHOT# */
129 msr.lo |= (1 << 10); /* FERR# multiplexing */
131 // TODO: Only if IA32_PLATFORM_ID[17] = 0 and IA32_PLATFORM_ID[50] = 1
132 msr.lo |= (1 << 16); /* Enhanced SpeedStep Enable */
138 /* TODO This should only be done on mobile CPUs, see cpuid 5 */
139 msr.hi |= (1 << (32 - 32)); // C4E
140 msr.hi |= (1 << (33 - 32)); // Hard C4E
143 /* NOTE: We leave the EMTTM_CR_TABLE0-5 at their default values */
144 msr.hi |= (1 << (36 - 32));
146 wrmsr(IA32_MISC_ENABLE, msr);
148 msr.lo |= (1 << 20); /* Lock Enhanced SpeedStep Enable */
149 wrmsr(IA32_MISC_ENABLE, msr);
152 #define PIC_SENS_CFG 0x1aa
153 static void configure_pic_thermal_sensors(void)
157 msr = rdmsr(PIC_SENS_CFG);
159 msr.lo |= (1 << 21); // inter-core lock TM1
160 msr.lo |= (1 << 4); // Enable bypass filter
162 wrmsr(PIC_SENS_CFG, msr);
166 static unsigned ehci_debug_addr;
169 static void model_1067x_init(device_t cpu)
171 char processor_name[49];
173 /* Turn on caching if we haven't already */
176 /* Update the microcode */
177 intel_update_microcode(microcode_updates);
179 /* Print processor name */
180 fill_processor_name(processor_name);
181 printk(BIOS_INFO, "CPU: %s.\n", processor_name);
184 // Is this caution really needed?
186 ehci_debug_addr = get_ehci_debug();
195 set_ehci_debug(ehci_debug_addr);
198 /* Enable the local cpu apics */
201 /* Initialize the APIC timer */
204 /* Enable virtualization */
207 /* Configure C States */
208 configure_c_states();
210 /* Configure Enhanced SpeedStep and Thermal Sensors */
213 /* PIC thermal sensor control */
214 configure_pic_thermal_sensors();
216 /* Start up my cpu siblings */
217 intel_sibling_init(cpu);
220 static struct device_operations cpu_dev_ops = {
221 .init = model_1067x_init,
224 static struct cpu_device_id cpu_table[] = {
225 { X86_VENDOR_INTEL, 0x10676 }, /* Intel Core 2 Solo/Core Duo */
229 static const struct cpu_driver driver __cpu_driver = {
231 .id_table = cpu_table,