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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 | /* |
38 | /* |
39 | * Identification of CPUs. |
39 | * Identification of CPUs. |
40 | * Contains only non-MP-Specification specific SMP code. |
40 | * Contains only non-MP-Specification specific SMP code. |
41 | */ |
41 | */ |
42 | #define AMD_CPUID_EBX 0x68747541 |
42 | #define AMD_CPUID_EBX 0x68747541 |
43 | #define AMD_CPUID_ECX 0x444d4163 |
43 | #define AMD_CPUID_ECX 0x444d4163 |
44 | #define AMD_CPUID_EDX 0x69746e65 |
44 | #define AMD_CPUID_EDX 0x69746e65 |
45 | 45 | ||
46 | #define INTEL_CPUID_EBX 0x756e6547 |
46 | #define INTEL_CPUID_EBX 0x756e6547 |
47 | #define INTEL_CPUID_ECX 0x6c65746e |
47 | #define INTEL_CPUID_ECX 0x6c65746e |
48 | #define INTEL_CPUID_EDX 0x49656e69 |
48 | #define INTEL_CPUID_EDX 0x49656e69 |
49 | 49 | ||
50 | 50 | ||
51 | enum vendor { |
51 | enum vendor { |
52 | VendorUnknown=0, |
52 | VendorUnknown=0, |
53 | VendorAMD, |
53 | VendorAMD, |
54 | VendorIntel |
54 | VendorIntel |
55 | }; |
55 | }; |
56 | 56 | ||
57 | static char *vendor_str[] = { |
57 | static char *vendor_str[] = { |
58 | "Unknown Vendor", |
58 | "Unknown Vendor", |
59 | "AuthenticAMD", |
59 | "AuthenticAMD", |
60 | "GenuineIntel" |
60 | "GenuineIntel" |
61 | }; |
61 | }; |
62 | 62 | ||
63 | void set_TS_flag(void) |
63 | void set_TS_flag(void) |
64 | { |
64 | { |
65 | asm |
65 | __asm__ volatile ( |
66 | ( |
- | |
67 | "mov %%cr0,%%rax;" |
66 | "mov %%cr0,%%rax;" |
68 | "or $8,%%rax;" |
67 | "or $8,%%rax;" |
69 | "mov %%rax,%%cr0;" |
68 | "mov %%rax,%%cr0;" |
70 | : |
69 | : |
71 | : |
70 | : |
72 | :"%rax" |
71 | :"%rax" |
73 | ); |
72 | ); |
74 | } |
73 | } |
75 | 74 | ||
76 | void reset_TS_flag(void) |
75 | void reset_TS_flag(void) |
77 | { |
76 | { |
78 | asm |
77 | __asm__ volatile ( |
79 | ( |
- | |
80 | "mov %%cr0,%%rax;" |
78 | "mov %%cr0,%%rax;" |
81 | "btc $4,%%rax;" |
79 | "btc $4,%%rax;" |
82 | "mov %%rax,%%cr0;" |
80 | "mov %%rax,%%cr0;" |
83 | : |
81 | : |
84 | : |
82 | : |
85 | :"%rax" |
83 | :"%rax" |
86 | ); |
84 | ); |
- | 85 | } |
|
- | 86 | ||
- | 87 | void cpu_arch_init(void) |
|
- | 88 | { |
|
- | 89 | CPU->arch.tss = tss_p; |
|
- | 90 | CPU->fpu_owner=NULL; |
|
- | 91 | } |
|
- | 92 | ||
- | 93 | ||
- | 94 | void cpu_identify(void) |
|
- | 95 | { |
|
- | 96 | cpu_info_t info; |
|
- | 97 | int i; |
|
- | 98 | ||
- | 99 | CPU->arch.vendor = VendorUnknown; |
|
- | 100 | if (has_cpuid()) { |
|
- | 101 | cpuid(0, &info); |
|
- | 102 | ||
- | 103 | /* |
|
- | 104 | * Check for AMD processor. |
|
- | 105 | */ |
|
- | 106 | if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) { |
|
- | 107 | CPU->arch.vendor = VendorAMD; |
|
- | 108 | } |
|
- | 109 | ||
- | 110 | /* |
|
- | 111 | * Check for Intel processor. |
|
- | 112 | */ |
|
- | 113 | if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) { |
|
- | 114 | CPU->arch.vendor = VendorIntel; |
|
- | 115 | } |
|
- | 116 | ||
- | 117 | cpuid(1, &info); |
|
- | 118 | CPU->arch.family = (info.cpuid_eax>>8)&0xf; |
|
- | 119 | CPU->arch.model = (info.cpuid_eax>>4)&0xf; |
|
- | 120 | CPU->arch.stepping = (info.cpuid_eax>>0)&0xf; |
|
- | 121 | } |
|
- | 122 | } |
|
- | 123 | ||
- | 124 | void cpu_print_report(cpu_t* m) |
|
- | 125 | { |
|
- | 126 | printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n", |
|
- | 127 | m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping, |
|
- | 128 | m->frequency_mhz); |
|
87 | } |
129 | } |
88 | 130 |