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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 __PM_H__ |
35 | #ifndef __PM_H__ |
36 | #define __PM_H__ |
36 | #define __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 VESA_INIT_SEGMENT 0x8000 |
41 | #define VESA_INIT_SEGMENT 0x8000 |
42 | 42 | ||
43 | #define NULL_DES 0 |
43 | #define NULL_DES 0 |
44 | #define KTEXT_DES 1 |
44 | #define KTEXT_DES 1 |
45 | #define KDATA_DES 2 |
45 | #define KDATA_DES 2 |
46 | #define UTEXT_DES 3 |
46 | #define UTEXT_DES 3 |
47 | #define UDATA_DES 4 |
47 | #define UDATA_DES 4 |
48 | #define TSS_DES 5 |
48 | #define TSS_DES 5 |
49 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */ |
49 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */ |
50 | 50 | ||
51 | #ifdef CONFIG_FB |
51 | #ifdef CONFIG_FB |
52 | 52 | ||
53 | #define VESA_INIT_SEGMENT 0x8000 |
53 | #define VESA_INIT_SEGMENT 0x8000 |
54 | #define VESA_INIT_DES 7 |
54 | #define VESA_INIT_DES 7 |
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 | 60 | ||
61 | #define selector(des) ((des)<<3) |
61 | #define selector(des) ((des)<<3) |
62 | 62 | ||
63 | #define PL_KERNEL 0 |
63 | #define PL_KERNEL 0 |
64 | #define PL_USER 3 |
64 | #define PL_USER 3 |
65 | 65 | ||
66 | #define AR_PRESENT (1<<7) |
66 | #define AR_PRESENT (1<<7) |
67 | #define AR_DATA (2<<3) |
67 | #define AR_DATA (2<<3) |
68 | #define AR_CODE (3<<3) |
68 | #define AR_CODE (3<<3) |
69 | #define AR_WRITABLE (1<<1) |
69 | #define AR_WRITABLE (1<<1) |
70 | #define AR_INTERRUPT (0xe) |
70 | #define AR_INTERRUPT (0xe) |
71 | #define AR_TSS (0x9) |
71 | #define AR_TSS (0x9) |
72 | 72 | ||
73 | #define DPL_KERNEL (PL_KERNEL<<5) |
73 | #define DPL_KERNEL (PL_KERNEL<<5) |
74 | #define DPL_USER (PL_USER<<5) |
74 | #define DPL_USER (PL_USER<<5) |
75 | 75 | ||
76 | #define TSS_BASIC_SIZE 104 |
76 | #define TSS_BASIC_SIZE 104 |
77 | #define TSS_IOMAP_SIZE (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */ |
77 | #define TSS_IOMAP_SIZE (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */ |
78 | 78 | ||
79 | #define IO_PORTS (64*1024) |
79 | #define IO_PORTS (64*1024) |
80 | 80 | ||
81 | #ifndef __ASM__ |
81 | #ifndef __ASM__ |
82 | 82 | ||
83 | #include <arch/types.h> |
83 | #include <arch/types.h> |
84 | #include <typedefs.h> |
84 | #include <typedefs.h> |
85 | #include <arch/context.h> |
85 | #include <arch/context.h> |
86 | 86 | ||
87 | struct ptr_16_32 { |
87 | struct ptr_16_32 { |
88 | uint16_t limit; |
88 | uint16_t limit; |
89 | uint32_t base; |
89 | uint32_t base; |
90 | } __attribute__ ((packed)); |
90 | } __attribute__ ((packed)); |
91 | typedef struct ptr_16_32 ptr_16_32_t; |
91 | typedef struct ptr_16_32 ptr_16_32_t; |
92 | 92 | ||
93 | struct descriptor { |
93 | struct descriptor { |
94 | unsigned limit_0_15: 16; |
94 | unsigned limit_0_15: 16; |
95 | unsigned base_0_15: 16; |
95 | unsigned base_0_15: 16; |
96 | unsigned base_16_23: 8; |
96 | unsigned base_16_23: 8; |
97 | unsigned access: 8; |
97 | unsigned access: 8; |
98 | unsigned limit_16_19: 4; |
98 | unsigned limit_16_19: 4; |
99 | unsigned available: 1; |
99 | unsigned available: 1; |
100 | unsigned unused: 1; |
100 | unsigned unused: 1; |
101 | unsigned special: 1; |
101 | unsigned special: 1; |
102 | unsigned granularity : 1; |
102 | unsigned granularity : 1; |
103 | unsigned base_24_31: 8; |
103 | unsigned base_24_31: 8; |
104 | } __attribute__ ((packed)); |
104 | } __attribute__ ((packed)); |
105 | typedef struct descriptor descriptor_t; |
105 | typedef struct descriptor descriptor_t; |
106 | 106 | ||
107 | struct idescriptor { |
107 | struct idescriptor { |
108 | unsigned offset_0_15: 16; |
108 | unsigned offset_0_15: 16; |
109 | unsigned selector: 16; |
109 | unsigned selector: 16; |
110 | unsigned unused: 8; |
110 | unsigned unused: 8; |
111 | unsigned access: 8; |
111 | unsigned access: 8; |
112 | unsigned offset_16_31: 16; |
112 | unsigned offset_16_31: 16; |
113 | } __attribute__ ((packed)); |
113 | } __attribute__ ((packed)); |
114 | typedef struct idescriptor idescriptor_t; |
114 | typedef struct idescriptor idescriptor_t; |
115 | 115 | ||
116 | struct tss { |
116 | struct tss { |
117 | uint16_t link; |
117 | uint16_t link; |
118 | unsigned : 16; |
118 | unsigned : 16; |
119 | uint32_t esp0; |
119 | uint32_t esp0; |
120 | uint16_t ss0; |
120 | uint16_t ss0; |
121 | unsigned : 16; |
121 | unsigned : 16; |
122 | uint32_t esp1; |
122 | uint32_t esp1; |
123 | uint16_t ss1; |
123 | uint16_t ss1; |
124 | unsigned : 16; |
124 | unsigned : 16; |
125 | uint32_t esp2; |
125 | uint32_t esp2; |
126 | uint16_t ss2; |
126 | uint16_t ss2; |
127 | unsigned : 16; |
127 | unsigned : 16; |
128 | uint32_t cr3; |
128 | uint32_t cr3; |
129 | uint32_t eip; |
129 | uint32_t eip; |
130 | uint32_t eflags; |
130 | uint32_t eflags; |
131 | uint32_t eax; |
131 | uint32_t eax; |
132 | uint32_t ecx; |
132 | uint32_t ecx; |
133 | uint32_t edx; |
133 | uint32_t edx; |
134 | uint32_t ebx; |
134 | uint32_t ebx; |
135 | uint32_t esp; |
135 | uint32_t esp; |
136 | uint32_t ebp; |
136 | uint32_t ebp; |
137 | uint32_t esi; |
137 | uint32_t esi; |
138 | uint32_t edi; |
138 | uint32_t edi; |
139 | uint16_t es; |
139 | uint16_t es; |
140 | unsigned : 16; |
140 | unsigned : 16; |
141 | uint16_t cs; |
141 | uint16_t cs; |
142 | unsigned : 16; |
142 | unsigned : 16; |
143 | uint16_t ss; |
143 | uint16_t ss; |
144 | unsigned : 16; |
144 | unsigned : 16; |
145 | uint16_t ds; |
145 | uint16_t ds; |
146 | unsigned : 16; |
146 | unsigned : 16; |
147 | uint16_t fs; |
147 | uint16_t fs; |
148 | unsigned : 16; |
148 | unsigned : 16; |
149 | uint16_t gs; |
149 | uint16_t gs; |
150 | unsigned : 16; |
150 | unsigned : 16; |
151 | uint16_t ldtr; |
151 | uint16_t ldtr; |
152 | unsigned : 16; |
152 | unsigned : 16; |
153 | unsigned : 16; |
153 | unsigned : 16; |
154 | uint16_t iomap_base; |
154 | uint16_t iomap_base; |
155 | uint8_t iomap[TSS_IOMAP_SIZE]; |
155 | uint8_t iomap[TSS_IOMAP_SIZE]; |
156 | } __attribute__ ((packed)); |
156 | } __attribute__ ((packed)); |
157 | typedef struct tss tss_t; |
157 | typedef struct tss tss_t; |
158 | 158 | ||
159 | extern ptr_16_32_t gdtr; |
159 | extern ptr_16_32_t gdtr; |
160 | extern ptr_16_32_t bootstrap_gdtr; |
160 | extern ptr_16_32_t bootstrap_gdtr; |
161 | extern ptr_16_32_t protected_ap_gdtr; |
161 | extern ptr_16_32_t protected_ap_gdtr; |
162 | extern struct tss *tss_p; |
162 | extern struct tss *tss_p; |
163 | 163 | ||
164 | extern descriptor_t gdt[]; |
164 | extern descriptor_t gdt[]; |
165 | 165 | ||
166 | extern void pm_init(void); |
166 | extern void pm_init(void); |
167 | 167 | ||
168 | extern void gdt_setbase(descriptor_t *d, uintptr_t base); |
168 | extern void gdt_setbase(descriptor_t *d, uintptr_t base); |
169 | extern void gdt_setlimit(descriptor_t *d, uint32_t limit); |
169 | extern void gdt_setlimit(descriptor_t *d, uint32_t limit); |
170 | 170 | ||
171 | extern void idt_init(void); |
171 | extern void idt_init(void); |
172 | extern void idt_setoffset(idescriptor_t *d, uintptr_t offset); |
172 | extern void idt_setoffset(idescriptor_t *d, uintptr_t offset); |
173 | 173 | ||
174 | extern void tss_initialize(tss_t *t); |
174 | extern void tss_initialize(tss_t *t); |
175 | extern void set_tls_desc(uintptr_t tls); |
175 | extern void set_tls_desc(uintptr_t tls); |
176 | 176 | ||
177 | #endif /* __ASM__ */ |
177 | #endif /* __ASM__ */ |
178 | 178 | ||
179 | #endif |
179 | #endif |
180 | 180 | ||
181 | /** @} |
181 | /** @} |
182 | */ |
182 | */ |
183 | 183 | ||
184 | 184 |