WebSVN – HelenOS – Diff – /trunk/kernel/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 cpu_arch_init(void)
{
    CPU->arch.tss = tss_p;
}
 
 
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 16	Rev 22
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	enum vendor {	52	enum vendor {
53	VendorUnknown=0,	53	VendorUnknown=0,
54	VendorAMD,	54	VendorAMD,
55	VendorIntel	55	VendorIntel
56	};	56	};
57		57
58	static char *vendor_str[] = {	58	static char *vendor_str[] = {
59	"Unknown Vendor",	59	"Unknown Vendor",
60	"AuthenticAMD",	60	"AuthenticAMD",
61	"GenuineIntel"	61	"GenuineIntel"
62	};	62	};
63		63
64	void cpu_arch_init(void)	64	void cpu_arch_init(void)
65	{	65	{
66	CPU->arch.tss = tss_p;	66	CPU->arch.tss = tss_p;
67	}	67	}
68		68
69		69
70	void cpu_identify(void)	70	void cpu_identify(void)
71	{	71	{
72	cpu_info_t info;	72	cpu_info_t info;
73	int i;	73	int i;
74		74
75	CPU->arch.vendor = VendorUnknown;	75	CPU->arch.vendor = VendorUnknown;
76	if (has_cpuid()) {	76	if (has_cpuid()) {
77	cpuid(0, &info);	77	cpuid(0, &info);
78		78
79	/*	79	/*
80	* Check for AMD processor.	80	* Check for AMD processor.
81	*/	81	*/
82	if (info.cpuid_ebx==AMD_CPUID_EBX &&	82	if (info.cpuid_ebx==AMD_CPUID_EBX &&
83	info.cpuid_ecx==AMD_CPUID_ECX &&	83	info.cpuid_ecx==AMD_CPUID_ECX &&
84	info.cpuid_edx==AMD_CPUID_EDX) {	84	info.cpuid_edx==AMD_CPUID_EDX) {
85		85
86	CPU->arch.vendor = VendorAMD;	86	CPU->arch.vendor = VendorAMD;
87	}	87	}
88		88
89	/*	89	/*
90	* Check for Intel processor.	90	* Check for Intel processor.
91	*/	91	*/
92	if (info.cpuid_ebx==INTEL_CPUID_EBX &&	92	if (info.cpuid_ebx==INTEL_CPUID_EBX &&
93	info.cpuid_ecx==INTEL_CPUID_ECX &&	93	info.cpuid_ecx==INTEL_CPUID_ECX &&
94	info.cpuid_edx==INTEL_CPUID_EDX) {	94	info.cpuid_edx==INTEL_CPUID_EDX) {
95		95
96	CPU->arch.vendor = VendorIntel;	96	CPU->arch.vendor = VendorIntel;
97		97
98	}	98	}
99		99
100	cpuid(1, &info);	100	cpuid(1, &info);
101	CPU->arch.family = (info.cpuid_eax>>8)&0xf;	101	CPU->arch.family = (info.cpuid_eax>>8)&0xf;
102	CPU->arch.model = (info.cpuid_eax>>4)&0xf;	102	CPU->arch.model = (info.cpuid_eax>>4)&0xf;
103	CPU->arch.stepping = (info.cpuid_eax>>0)&0xf;	103	CPU->arch.stepping = (info.cpuid_eax>>0)&0xf;
104	}	104	}
105	}	105	}
106		106
107	void cpu_print_report(struct cpu* m)	107	void cpu_print_report(cpu_t* m)
108	{	108	{
109	printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n",	109	printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n",
110	m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping,	110	m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping,
111	m->frequency_mhz);	111	m->frequency_mhz);
112	}	112	}
113		113

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia32/src/cpu/cpu.c @ 4118 – Rev 16 → 22