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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 | /** @addtogroup ia32 |
29 | /** @addtogroup ia32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_ia32_PM_H_ |
35 | #ifndef KERN_ia32_PM_H_ |
36 | #define KERN_ia32_PM_H_ |
36 | #define KERN_ia32_PM_H_ |
37 | 37 | ||
38 | #define IDT_ITEMS 64 |
38 | #define IDT_ITEMS 64 |
39 | #define GDT_ITEMS 7 |
39 | #define GDT_ITEMS 7 |
40 | 40 | ||
41 | #define NULL_DES 0 |
41 | #define NULL_DES 0 |
42 | #define KTEXT_DES 1 |
42 | #define KTEXT_DES 1 |
43 | #define KDATA_DES 2 |
43 | #define KDATA_DES 2 |
44 | #define UTEXT_DES 3 |
44 | #define UTEXT_DES 3 |
45 | #define UDATA_DES 4 |
45 | #define UDATA_DES 4 |
46 | #define TSS_DES 5 |
46 | #define TSS_DES 5 |
47 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */ |
47 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */ |
48 | 48 | ||
49 | #ifdef CONFIG_FB |
49 | #ifdef CONFIG_FB |
50 | 50 | ||
51 | #define VESA_INIT_SEGMENT 0x8000 |
51 | #define VESA_INIT_SEGMENT 0x8000 |
52 | #define VESA_INIT_DES 7 |
52 | #define VESA_INIT_DES 7 |
53 | #define KTEXT32_DES KTEXT_DES |
53 | #define KTEXT32_DES KTEXT_DES |
54 | 54 | ||
55 | #undef GDT_ITEMS |
55 | #undef GDT_ITEMS |
56 | #define GDT_ITEMS 8 |
56 | #define GDT_ITEMS 8 |
57 | 57 | ||
58 | #endif /* CONFIG_FB */ |
58 | #endif /* CONFIG_FB */ |
59 | 59 | ||
60 | #define gdtselector(des) ((des) << 3) |
60 | #define gdtselector(des) ((des) << 3) |
61 | 61 | ||
62 | #define PL_KERNEL 0 |
62 | #define PL_KERNEL 0 |
63 | #define PL_USER 3 |
63 | #define PL_USER 3 |
64 | 64 | ||
65 | #define AR_PRESENT (1 << 7) |
65 | #define AR_PRESENT (1 << 7) |
66 | #define AR_DATA (2 << 3) |
66 | #define AR_DATA (2 << 3) |
67 | #define AR_CODE (3 << 3) |
67 | #define AR_CODE (3 << 3) |
68 | #define AR_WRITABLE (1 << 1) |
68 | #define AR_WRITABLE (1 << 1) |
69 | #define AR_INTERRUPT (0x0e) |
69 | #define AR_INTERRUPT (0x0e) |
70 | #define AR_TSS (0x09) |
70 | #define AR_TSS (0x09) |
71 | 71 | ||
72 | #define DPL_KERNEL (PL_KERNEL << 5) |
72 | #define DPL_KERNEL (PL_KERNEL << 5) |
73 | #define DPL_USER (PL_USER << 5) |
73 | #define DPL_USER (PL_USER << 5) |
74 | 74 | ||
75 | #define TSS_BASIC_SIZE 104 |
75 | #define TSS_BASIC_SIZE 104 |
76 | #define TSS_IOMAP_SIZE (16 * 1024 + 1) /* 16K for bitmap + 1 terminating byte for convenience */ |
76 | #define TSS_IOMAP_SIZE (16 * 1024 + 1) /* 16K for bitmap + 1 terminating byte for convenience */ |
77 | 77 | ||
78 | #define IO_PORTS (64 * 1024) |
78 | #define IO_PORTS (64 * 1024) |
79 | 79 | ||
80 | #ifndef __ASM__ |
80 | #ifndef __ASM__ |
81 | 81 | ||
82 | #include <arch/types.h> |
82 | #include <arch/types.h> |
83 | #include <arch/context.h> |
83 | #include <arch/context.h> |
84 | 84 | ||
85 | typedef struct { |
85 | typedef struct { |
86 | uint16_t limit; |
86 | uint16_t limit; |
87 | uint32_t base; |
87 | uint32_t base; |
88 | } __attribute__ ((packed)) ptr_16_32_t; |
88 | } __attribute__ ((packed)) ptr_16_32_t; |
89 | 89 | ||
90 | typedef struct { |
90 | typedef struct { |
91 | unsigned limit_0_15: 16; |
91 | unsigned limit_0_15: 16; |
92 | unsigned base_0_15: 16; |
92 | unsigned base_0_15: 16; |
93 | unsigned base_16_23: 8; |
93 | unsigned base_16_23: 8; |
94 | unsigned access: 8; |
94 | unsigned access: 8; |
95 | unsigned limit_16_19: 4; |
95 | unsigned limit_16_19: 4; |
96 | unsigned available: 1; |
96 | unsigned available: 1; |
97 | unsigned unused: 1; |
97 | unsigned unused: 1; |
98 | unsigned special: 1; |
98 | unsigned special: 1; |
99 | unsigned granularity : 1; |
99 | unsigned granularity : 1; |
100 | unsigned base_24_31: 8; |
100 | unsigned base_24_31: 8; |
101 | } __attribute__ ((packed)) descriptor_t; |
101 | } __attribute__ ((packed)) descriptor_t; |
102 | 102 | ||
103 | typedef struct { |
103 | typedef struct { |
104 | unsigned offset_0_15: 16; |
104 | unsigned offset_0_15: 16; |
105 | unsigned selector: 16; |
105 | unsigned selector: 16; |
106 | unsigned unused: 8; |
106 | unsigned unused: 8; |
107 | unsigned access: 8; |
107 | unsigned access: 8; |
108 | unsigned offset_16_31: 16; |
108 | unsigned offset_16_31: 16; |
109 | } __attribute__ ((packed)) idescriptor_t; |
109 | } __attribute__ ((packed)) idescriptor_t; |
110 | 110 | ||
111 | typedef struct { |
111 | typedef struct { |
112 | uint16_t link; |
112 | uint16_t link; |
113 | unsigned : 16; |
113 | unsigned : 16; |
114 | uint32_t esp0; |
114 | uint32_t esp0; |
115 | uint16_t ss0; |
115 | uint16_t ss0; |
116 | unsigned : 16; |
116 | unsigned : 16; |
117 | uint32_t esp1; |
117 | uint32_t esp1; |
118 | uint16_t ss1; |
118 | uint16_t ss1; |
119 | unsigned : 16; |
119 | unsigned : 16; |
120 | uint32_t esp2; |
120 | uint32_t esp2; |
121 | uint16_t ss2; |
121 | uint16_t ss2; |
122 | unsigned : 16; |
122 | unsigned : 16; |
123 | uint32_t cr3; |
123 | uint32_t cr3; |
124 | uint32_t eip; |
124 | uint32_t eip; |
125 | uint32_t eflags; |
125 | uint32_t eflags; |
126 | uint32_t eax; |
126 | uint32_t eax; |
127 | uint32_t ecx; |
127 | uint32_t ecx; |
128 | uint32_t edx; |
128 | uint32_t edx; |
129 | uint32_t ebx; |
129 | uint32_t ebx; |
130 | uint32_t esp; |
130 | uint32_t esp; |
131 | uint32_t ebp; |
131 | uint32_t ebp; |
132 | uint32_t esi; |
132 | uint32_t esi; |
133 | uint32_t edi; |
133 | uint32_t edi; |
134 | uint16_t es; |
134 | uint16_t es; |
135 | unsigned : 16; |
135 | unsigned : 16; |
136 | uint16_t cs; |
136 | uint16_t cs; |
137 | unsigned : 16; |
137 | unsigned : 16; |
138 | uint16_t ss; |
138 | uint16_t ss; |
139 | unsigned : 16; |
139 | unsigned : 16; |
140 | uint16_t ds; |
140 | uint16_t ds; |
141 | unsigned : 16; |
141 | unsigned : 16; |
142 | uint16_t fs; |
142 | uint16_t fs; |
143 | unsigned : 16; |
143 | unsigned : 16; |
144 | uint16_t gs; |
144 | uint16_t gs; |
145 | unsigned : 16; |
145 | unsigned : 16; |
146 | uint16_t ldtr; |
146 | uint16_t ldtr; |
147 | unsigned : 16; |
147 | unsigned : 16; |
148 | unsigned : 16; |
148 | unsigned : 16; |
149 | uint16_t iomap_base; |
149 | uint16_t iomap_base; |
150 | uint8_t iomap[TSS_IOMAP_SIZE]; |
150 | uint8_t iomap[TSS_IOMAP_SIZE]; |
151 | } __attribute__ ((packed)) tss_t; |
151 | } __attribute__ ((packed)) tss_t; |
152 | 152 | ||
153 | extern ptr_16_32_t gdtr; |
153 | extern ptr_16_32_t gdtr; |
154 | extern ptr_16_32_t bootstrap_gdtr; |
154 | extern ptr_16_32_t bootstrap_gdtr; |
155 | extern ptr_16_32_t protected_ap_gdtr; |
155 | extern ptr_16_32_t protected_ap_gdtr; |
156 | extern tss_t *tss_p; |
156 | extern tss_t *tss_p; |
157 | 157 | ||
158 | extern descriptor_t gdt[]; |
158 | extern descriptor_t gdt[]; |
159 | 159 | ||
160 | extern void pm_init(void); |
160 | extern void pm_init(void); |
161 | 161 | ||
162 | extern void gdt_setbase(descriptor_t *d, uintptr_t base); |
162 | extern void gdt_setbase(descriptor_t *d, uintptr_t base); |
163 | extern void gdt_setlimit(descriptor_t *d, uint32_t limit); |
163 | extern void gdt_setlimit(descriptor_t *d, uint32_t limit); |
164 | 164 | ||
165 | extern void idt_init(void); |
165 | extern void idt_init(void); |
166 | extern void idt_setoffset(idescriptor_t *d, uintptr_t offset); |
166 | extern void idt_setoffset(idescriptor_t *d, uintptr_t offset); |
167 | 167 | ||
168 | extern void tss_initialize(tss_t *t); |
168 | extern void tss_initialize(tss_t *t); |
169 | extern void set_tls_desc(uintptr_t tls); |
169 | extern void set_tls_desc(uintptr_t tls); |
170 | 170 | ||
171 | #endif /* __ASM__ */ |
171 | #endif /* __ASM__ */ |
172 | 172 | ||
173 | #endif |
173 | #endif |
174 | 174 | ||
175 | /** @} |
175 | /** @} |
176 | */ |
176 | */ |
177 | 177 |