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>
35 static const uint32_t microcode_updates[] = {
36 /* Dummy terminator */
43 static inline void strcpy(char *dst, char *src)
45 while (*src) *dst++ = *src++;
48 static void init_timer(void)
50 /* Set the apic timer to no interrupts and periodic mode */
51 lapic_write(LAPIC_LVTT, (1 << 17)|(1<< 16)|(0 << 12)|(0 << 0));
53 /* Set the divider to 1, no divider */
54 lapic_write(LAPIC_TDCR, LAPIC_TDR_DIV_1);
56 /* Set the initial counter to 0xffffffff */
57 lapic_write(LAPIC_TMICT, 0xffffffff);
60 static void fill_processor_name(char *processor_name)
62 struct cpuid_result regs;
63 char temp_processor_name[49];
64 char *processor_name_start;
65 unsigned int *name_as_ints = (unsigned int *)temp_processor_name;
69 regs = cpuid(0x80000002 + i);
70 name_as_ints[i*4 + 0] = regs.eax;
71 name_as_ints[i*4 + 1] = regs.ebx;
72 name_as_ints[i*4 + 2] = regs.ecx;
73 name_as_ints[i*4 + 3] = regs.edx;
76 temp_processor_name[48] = 0;
78 /* Skip leading spaces */
79 processor_name_start = temp_processor_name;
80 while (*processor_name_start == ' ')
81 processor_name_start++;
83 memset(processor_name, 0, 49);
84 strcpy(processor_name, processor_name_start);
87 #define IA32_FEATURE_CONTROL 0x003a
89 #define CPUID_VMX (1 << 5)
90 #define CPUID_SMX (1 << 6)
91 static void enable_vmx(void)
93 struct cpuid_result regs;
96 msr = rdmsr(IA32_FEATURE_CONTROL);
98 if (msr.lo & (1 << 0)) {
99 /* VMX locked. If we set it again we get an illegal
106 if (regs.ecx & CPUID_VMX) {
108 if (regs.ecx & CPUID_SMX)
112 wrmsr(IA32_FEATURE_CONTROL, msr);
114 msr.lo |= (1 << 0); /* Set lock bit */
116 wrmsr(IA32_FEATURE_CONTROL, msr);
119 #define PMG_CST_CONFIG_CONTROL 0xe2
120 #define PMG_IO_BASE_ADDR 0xe3
121 #define PMG_IO_CAPTURE_ADDR 0xe4
123 #define PMB0_BASE 0x580
124 #define PMB1_BASE 0x800
126 static void configure_c_states(void)
130 msr = rdmsr(PMG_CST_CONFIG_CONTROL);
132 msr.lo |= (1 << 15); // config lock until next reset
133 msr.lo |= (1 << 14); // Deeper Sleep
134 msr.lo |= (1 << 10); // Enable IO MWAIT redirection
135 msr.lo &= ~(1 << 9); // Issue a single stop grant cycle upon stpclk
136 msr.lo |= (1 << 3); // Dynamic L2
138 wrmsr(PMG_CST_CONFIG_CONTROL, msr);
140 /* Set Processor MWAIT IO BASE */
142 msr.lo = ((PMB0_BASE + 4) & 0xffff) | (((PMB1_BASE + 9) & 0xffff) << 16);
143 wrmsr(PMG_IO_BASE_ADDR, msr);
145 /* Set IO Capture Address */
147 msr.lo = ((PMB0_BASE + 4) & 0xffff) | (( CST_RANGE & 0xffff) << 16);
148 wrmsr(PMG_IO_CAPTURE_ADDR, msr);
151 #define IA32_MISC_ENABLE 0x1a0
152 static void configure_misc(void)
156 msr = rdmsr(IA32_MISC_ENABLE);
157 msr.lo |= (1 << 3); /* TM1 enable */
158 msr.lo |= (1 << 13); /* TM2 enable */
159 msr.lo |= (1 << 17); /* Bidirectional PROCHOT# */
161 msr.lo |= (1 << 10); /* FERR# multiplexing */
163 // TODO: Only if IA32_PLATFORM_ID[17] = 0 and IA32_PLATFORM_ID[50] = 1
164 msr.lo |= (1 << 16); /* Enhanced SpeedStep Enable */
170 /* TODO This should only be done on mobile CPUs, see cpuid 5 */
171 msr.hi |= (1 << (32 - 32)); // C4E
172 msr.hi |= (1 << (33 - 32)); // Hard C4E
175 /* NOTE: We leave the EMTTM_CR_TABLE0-5 at their default values */
176 msr.hi |= (1 << (36 - 32));
178 wrmsr(IA32_MISC_ENABLE, msr);
180 msr.lo |= (1 << 20); /* Lock Enhanced SpeedStep Enable */
181 wrmsr(IA32_MISC_ENABLE, msr);
184 #define PIC_SENS_CFG 0x1aa
185 static void configure_pic_thermal_sensors(void)
189 msr = rdmsr(PIC_SENS_CFG);
191 msr.lo |= (1 << 21); // inter-core lock TM1
192 msr.lo |= (1 << 4); // Enable bypass filter
194 wrmsr(PIC_SENS_CFG, msr);
197 #if CONFIG_USBDEBUG_DIRECT
198 static unsigned ehci_debug_addr;
201 static void model_1067x_init(device_t cpu)
203 char processor_name[49];
205 /* Turn on caching if we haven't already */
208 /* Update the microcode */
209 intel_update_microcode(microcode_updates);
211 /* Print processor name */
212 fill_processor_name(processor_name);
213 printk(BIOS_INFO, "CPU: %s.\n", processor_name);
215 #if CONFIG_USBDEBUG_DIRECT
216 // Is this caution really needed?
218 ehci_debug_addr = get_ehci_debug();
226 #if CONFIG_USBDEBUG_DIRECT
227 set_ehci_debug(ehci_debug_addr);
230 /* Enable the local cpu apics */
233 /* Initialize the APIC timer */
236 /* Enable virtualization */
239 /* Configure C States */
240 configure_c_states();
242 /* Configure Enhanced SpeedStep and Thermal Sensors */
245 /* PIC thermal sensor control */
246 configure_pic_thermal_sensors();
248 /* Start up my cpu siblings */
249 intel_sibling_init(cpu);
252 static struct device_operations cpu_dev_ops = {
253 .init = model_1067x_init,
256 static struct cpu_device_id cpu_table[] = {
257 { X86_VENDOR_INTEL, 0x10676 }, /* Intel Core 2 Solo/Core Duo */
261 static const struct cpu_driver driver __cpu_driver = {
263 .id_table = cpu_table,