WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ia32/src/cpu/cpu.c


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <arch/cpu.h>
#include <arch/cpuid.h>
#include <arch/pm.h>
 
#include <arch.h>
#include <arch/types.h>
#include <print.h>
#include <typedefs.h>
 
#include <arch/smp/apic.h>
 
/*
 * Identification of CPUs.
 * Contains only non-MP-Specification specific SMP code.
 */
#define AMD_CPUID_EBX   0x68747541
#define AMD_CPUID_ECX   0x444d4163
#define AMD_CPUID_EDX   0x69746e65
 
#define INTEL_CPUID_EBX 0x756e6547
#define INTEL_CPUID_ECX 0x6c65746e
#define INTEL_CPUID_EDX 0x49656e69
 
 
enum vendor {
    VendorUnknown=0,
    VendorAMD,
    VendorIntel
};
 
static char *vendor_str[] = {
    "Unknown Vendor",
    "AuthenticAMD",
    "GenuineIntel"
};
 
void fpu_disable(void)
{
    __asm__ volatile (
 
        "mov %%cr0,%%eax;"
        "or $8,%%eax;"
        "mov %%eax,%%cr0;"
        :
        :
        :"%eax"
    );
}
 
void fpu_enable(void)
{
    __asm__ volatile (
 
        "mov %%cr0,%%eax;"
        "and $0xffFFffF7,%%eax;"
        "mov %%eax,%%cr0;"
        :
        :
        :"%eax"
    ); 
}
 
 
 
 
void cpu_arch_init(void)
{
    CPU->arch.tss = tss_p;
    CPU->fpu_owner=NULL;
}
 
 
void cpu_identify(void)
{
    cpu_info_t info;
    int i;
 
    CPU->arch.vendor = VendorUnknown;
    if (has_cpuid()) {
        cpuid(0, &info);
 
        /*
         * Check for AMD processor.
         */
        if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) {
            CPU->arch.vendor = VendorAMD;
        }
 
        /*
         * Check for Intel processor.
         */    
        if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) {
            CPU->arch.vendor = VendorIntel;
        }
               
        cpuid(1, &info);
        CPU->arch.family = (info.cpuid_eax>>8)&0xf;
        CPU->arch.model = (info.cpuid_eax>>4)&0xf;
        CPU->arch.stepping = (info.cpuid_eax>>0)&0xf;                      
    }
}
 
void cpu_print_report(cpu_t* m)
{
    printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n",
        m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping,
        m->frequency_mhz);
}
 

Rev 141	Rev 309
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <arch/cpu.h>	29	#include <arch/cpu.h>
30	#include <arch/cpuid.h>	30	#include <arch/cpuid.h>
31	#include <arch/pm.h>	31	#include <arch/pm.h>
32		32
33	#include <arch.h>	33	#include <arch.h>
34	#include <arch/types.h>	34	#include <arch/types.h>
35	#include <print.h>	35	#include <print.h>
36	#include <typedefs.h>	36	#include <typedefs.h>
37		37
38	#include <arch/smp/apic.h>	38	#include <arch/smp/apic.h>
39		39
40	/*	40	/*
41	* Identification of CPUs.	41	* Identification of CPUs.
42	* Contains only non-MP-Specification specific SMP code.	42	* Contains only non-MP-Specification specific SMP code.
43	*/	43	*/
44	#define AMD_CPUID_EBX 0x68747541	44	#define AMD_CPUID_EBX 0x68747541
45	#define AMD_CPUID_ECX 0x444d4163	45	#define AMD_CPUID_ECX 0x444d4163
46	#define AMD_CPUID_EDX 0x69746e65	46	#define AMD_CPUID_EDX 0x69746e65
47		47
48	#define INTEL_CPUID_EBX 0x756e6547	48	#define INTEL_CPUID_EBX 0x756e6547
49	#define INTEL_CPUID_ECX 0x6c65746e	49	#define INTEL_CPUID_ECX 0x6c65746e
50	#define INTEL_CPUID_EDX 0x49656e69	50	#define INTEL_CPUID_EDX 0x49656e69
51		51
52		52
53	enum vendor {	53	enum vendor {
54	VendorUnknown=0,	54	VendorUnknown=0,
55	VendorAMD,	55	VendorAMD,
56	VendorIntel	56	VendorIntel
57	};	57	};
58		58
59	static char *vendor_str[] = {	59	static char *vendor_str[] = {
60	"Unknown Vendor",	60	"Unknown Vendor",
61	"AuthenticAMD",	61	"AuthenticAMD",
62	"GenuineIntel"	62	"GenuineIntel"
63	};	63	};
64		64
65	void set_TS_flag(void)	65	void fpu_disable(void)
66	{	66	{
67	asm	67	__asm__ volatile (
68	(	-
69	"mov %%cr0,%%eax;"	68	"mov %%cr0,%%eax;"
70	"or $8,%%eax;"	69	"or $8,%%eax;"
71	"mov %%eax,%%cr0;"	70	"mov %%eax,%%cr0;"
72	:	71	:
73	:	72	:
74	:"%eax"	73	:"%eax"
75	);	74	);
76	}	75	}
77		76
78	void reset_TS_flag(void)	77	void fpu_enable(void)
79	{	78	{
80	asm	79	__asm__ volatile (
81	(	-
82	"mov %%cr0,%%eax;"	80	"mov %%cr0,%%eax;"
83	"and $0xffFFffF7,%%eax;"	81	"and $0xffFFffF7,%%eax;"
84	"mov %%eax,%%cr0;"	82	"mov %%eax,%%cr0;"
85	:	83	:
86	:	84	:
87	:"%eax"	85	:"%eax"
88	);	86	);
89	}	87	}
90		88
91		89
92		90
93		91
94	void cpu_arch_init(void)	92	void cpu_arch_init(void)
95	{	93	{
96	CPU->arch.tss = tss_p;	94	CPU->arch.tss = tss_p;
97	CPU->fpu_owner=NULL;	95	CPU->fpu_owner=NULL;
98	}	96	}
99		97
100		98
101	void cpu_identify(void)	99	void cpu_identify(void)
102	{	100	{
103	cpu_info_t info;	101	cpu_info_t info;
104	int i;	102	int i;
105		103
106	CPU->arch.vendor = VendorUnknown;	104	CPU->arch.vendor = VendorUnknown;
107	if (has_cpuid()) {	105	if (has_cpuid()) {
108	cpuid(0, &info);	106	cpuid(0, &info);
109		107
110	/*	108	/*
111	* Check for AMD processor.	109	* Check for AMD processor.
112	*/	110	*/
113	if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) {	111	if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) {
114	CPU->arch.vendor = VendorAMD;	112	CPU->arch.vendor = VendorAMD;
115	}	113	}
116		114
117	/*	115	/*
118	* Check for Intel processor.	116	* Check for Intel processor.
119	*/	117	*/
120	if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) {	118	if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) {
121	CPU->arch.vendor = VendorIntel;	119	CPU->arch.vendor = VendorIntel;
122	}	120	}
123		121
124	cpuid(1, &info);	122	cpuid(1, &info);
125	CPU->arch.family = (info.cpuid_eax>>8)&0xf;	123	CPU->arch.family = (info.cpuid_eax>>8)&0xf;
126	CPU->arch.model = (info.cpuid_eax>>4)&0xf;	124	CPU->arch.model = (info.cpuid_eax>>4)&0xf;
127	CPU->arch.stepping = (info.cpuid_eax>>0)&0xf;	125	CPU->arch.stepping = (info.cpuid_eax>>0)&0xf;
128	}	126	}
129	}	127	}
130		128
131	void cpu_print_report(cpu_t* m)	129	void cpu_print_report(cpu_t* m)
132	{	130	{
133	printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n",	131	printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n",
134	m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping,	132	m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping,
135	m->frequency_mhz);	133	m->frequency_mhz);
136	}	134	}
137		135

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ia32/src/cpu/cpu.c @ 1731 – Rev 141 → 309