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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Jakub Jermar |
2 | * Copyright (c) 2005 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 genarch |
29 | /** @addtogroup genarch |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** |
33 | /** |
34 | * @file |
34 | * @file |
35 | * @brief Advanced Configuration and Power Interface (ACPI) initialization. |
35 | * @brief Advanced Configuration and Power Interface (ACPI) initialization. |
36 | */ |
36 | */ |
37 | 37 | ||
38 | #include <genarch/acpi/acpi.h> |
38 | #include <genarch/acpi/acpi.h> |
39 | #include <genarch/acpi/madt.h> |
39 | #include <genarch/acpi/madt.h> |
40 | #include <arch/bios/bios.h> |
40 | #include <arch/bios/bios.h> |
41 | #include <mm/as.h> |
41 | #include <mm/as.h> |
42 | #include <mm/page.h> |
42 | #include <mm/page.h> |
43 | #include <print.h> |
43 | #include <print.h> |
44 | 44 | ||
45 | #define RSDP_SIGNATURE "RSD PTR " |
45 | #define RSDP_SIGNATURE "RSD PTR " |
46 | #define RSDP_REVISION_OFFS 15 |
46 | #define RSDP_REVISION_OFFS 15 |
47 | 47 | ||
48 | struct acpi_rsdp *acpi_rsdp = NULL; |
48 | struct acpi_rsdp *acpi_rsdp = NULL; |
49 | struct acpi_rsdt *acpi_rsdt = NULL; |
49 | struct acpi_rsdt *acpi_rsdt = NULL; |
50 | struct acpi_xsdt *acpi_xsdt = NULL; |
50 | struct acpi_xsdt *acpi_xsdt = NULL; |
51 | 51 | ||
52 | struct acpi_signature_map signature_map[] = { |
52 | struct acpi_signature_map signature_map[] = { |
53 | { |
53 | { |
54 | (uint8_t *) "APIC", |
54 | (uint8_t *) "APIC", |
55 | (void *) &acpi_madt, |
55 | (void *) &acpi_madt, |
56 | "Multiple APIC Description Table" |
56 | "Multiple APIC Description Table" |
57 | } |
57 | } |
58 | }; |
58 | }; |
59 | 59 | ||
60 | static int rsdp_check(uint8_t *rsdp) { |
60 | static int rsdp_check(uint8_t *rsdp) { |
61 | struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; |
61 | struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; |
62 | uint8_t sum = 0; |
62 | uint8_t sum = 0; |
63 | unsigned int i; |
63 | unsigned int i; |
64 | 64 | ||
65 | for (i = 0; i < 20; i++) |
65 | for (i = 0; i < 20; i++) |
66 | sum = (uint8_t) (sum + rsdp[i]); |
66 | sum = (uint8_t) (sum + rsdp[i]); |
67 | 67 | ||
68 | if (sum) |
68 | if (sum) |
69 | return 0; /* bad checksum */ |
69 | return 0; /* bad checksum */ |
70 | 70 | ||
71 | if (r->revision == 0) |
71 | if (r->revision == 0) |
72 | return 1; /* ACPI 1.0 */ |
72 | return 1; /* ACPI 1.0 */ |
73 | 73 | ||
74 | for (; i < r->length; i++) |
74 | for (; i < r->length; i++) |
75 | sum = (uint8_t) (sum + rsdp[i]); |
75 | sum = (uint8_t) (sum + rsdp[i]); |
76 | 76 | ||
77 | return !sum; |
77 | return !sum; |
78 | 78 | ||
79 | } |
79 | } |
80 | 80 | ||
81 | int acpi_sdt_check(uint8_t *sdt) |
81 | int acpi_sdt_check(uint8_t *sdt) |
82 | { |
82 | { |
83 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt; |
83 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt; |
84 | uint8_t sum = 0; |
84 | uint8_t sum = 0; |
85 | unsigned int i; |
85 | unsigned int i; |
86 | 86 | ||
87 | for (i = 0; i < h->length; i++) |
87 | for (i = 0; i < h->length; i++) |
88 | sum = (uint8_t) (sum + sdt[i]); |
88 | sum = (uint8_t) (sum + sdt[i]); |
89 | 89 | ||
90 | return !sum; |
90 | return !sum; |
91 | } |
91 | } |
92 | 92 | ||
93 | static void map_sdt(struct acpi_sdt_header *sdt) |
93 | static void map_sdt(struct acpi_sdt_header *sdt) |
94 | { |
94 | { |
95 | page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, PAGE_NOT_CACHEABLE | PAGE_WRITE); |
95 | page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, PAGE_NOT_CACHEABLE | PAGE_WRITE); |
96 | map_structure((uintptr_t) sdt, sdt->length); |
96 | map_structure((uintptr_t) sdt, sdt->length); |
97 | } |
97 | } |
98 | 98 | ||
99 | static void configure_via_rsdt(void) |
99 | static void configure_via_rsdt(void) |
100 | { |
100 | { |
101 | unsigned int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint32_t); |
101 | unsigned int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint32_t); |
102 | 102 | ||
103 | for (i = 0; i < cnt; i++) { |
103 | for (i = 0; i < cnt; i++) { |
104 | for (j = 0; j < sizeof(signature_map) / sizeof(struct acpi_signature_map); j++) { |
104 | for (j = 0; j < sizeof(signature_map) / sizeof(struct acpi_signature_map); j++) { |
105 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) (unative_t) acpi_rsdt->entry[i]; |
105 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) (unative_t) acpi_rsdt->entry[i]; |
106 | 106 | ||
107 | map_sdt(h); |
107 | map_sdt(h); |
108 | if (*((uint32_t *) &h->signature[0]) == *((uint32_t *) &signature_map[j].signature[0])) { |
108 | if (*((uint32_t *) &h->signature[0]) == *((uint32_t *) &signature_map[j].signature[0])) { |
109 | if (!acpi_sdt_check((uint8_t *) h)) |
109 | if (!acpi_sdt_check((uint8_t *) h)) |
110 | goto next; |
110 | goto next; |
111 | *signature_map[j].sdt_ptr = h; |
111 | *signature_map[j].sdt_ptr = h; |
112 | LOG("%p: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
112 | LOG("%p: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
113 | } |
113 | } |
114 | } |
114 | } |
115 | next: |
115 | next: |
116 | ; |
116 | ; |
117 | } |
117 | } |
118 | } |
118 | } |
119 | 119 | ||
120 | static void configure_via_xsdt(void) |
120 | static void configure_via_xsdt(void) |
121 | { |
121 | { |
122 | unsigned int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint64_t); |
122 | unsigned int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint64_t); |
123 | 123 | ||
124 | for (i = 0; i < cnt; i++) { |
124 | for (i = 0; i < cnt; i++) { |
125 | for (j = 0; j < sizeof(signature_map) / sizeof(struct acpi_signature_map); j++) { |
125 | for (j = 0; j < sizeof(signature_map) / sizeof(struct acpi_signature_map); j++) { |
126 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((uintptr_t) acpi_rsdt->entry[i]); |
126 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((uintptr_t) acpi_rsdt->entry[i]); |
127 | 127 | ||
128 | map_sdt(h); |
128 | map_sdt(h); |
129 | if (*((uint32_t *) &h->signature[0]) == *((uint32_t *) &signature_map[j].signature[0])) { |
129 | if (*((uint32_t *) &h->signature[0]) == *((uint32_t *) &signature_map[j].signature[0])) { |
130 | if (!acpi_sdt_check((uint8_t *) h)) |
130 | if (!acpi_sdt_check((uint8_t *) h)) |
131 | goto next; |
131 | goto next; |
132 | *signature_map[j].sdt_ptr = h; |
132 | *signature_map[j].sdt_ptr = h; |
133 | LOG("%p: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
133 | LOG("%p: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
134 | } |
134 | } |
135 | } |
135 | } |
136 | next: |
136 | next: |
137 | ; |
137 | ; |
138 | } |
138 | } |
139 | 139 | ||
140 | } |
140 | } |
141 | 141 | ||
142 | void acpi_init(void) |
142 | void acpi_init(void) |
143 | { |
143 | { |
144 | uint8_t *addr[2] = { NULL, (uint8_t *) PA2KA(0xe0000) }; |
144 | uint8_t *addr[2] = { NULL, (uint8_t *) PA2KA(0xe0000) }; |
145 | int i, j, length[2] = { 1024, 128*1024 }; |
145 | int i, j, length[2] = { 1024, 128*1024 }; |
146 | uint64_t *sig = (uint64_t *) RSDP_SIGNATURE; |
146 | uint64_t *sig = (uint64_t *) RSDP_SIGNATURE; |
147 | 147 | ||
148 | /* |
148 | /* |
149 | * Find Root System Description Pointer |
149 | * Find Root System Description Pointer |
150 | * 1. search first 1K of EBDA |
150 | * 1. search first 1K of EBDA |
151 | * 2. search 128K starting at 0xe0000 |
151 | * 2. search 128K starting at 0xe0000 |
152 | */ |
152 | */ |
153 | 153 | ||
154 | addr[0] = (uint8_t *) PA2KA(ebda); |
154 | addr[0] = (uint8_t *) PA2KA(ebda); |
155 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
155 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
156 | for (j = 0; j < length[i]; j += 16) { |
156 | for (j = 0; j < length[i]; j += 16) { |
157 | if (*((uint64_t *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
157 | if (*((uint64_t *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
158 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
158 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
159 | goto rsdp_found; |
159 | goto rsdp_found; |
160 | } |
160 | } |
161 | } |
161 | } |
162 | } |
162 | } |
163 | 163 | ||
164 | return; |
164 | return; |
165 | 165 | ||
166 | rsdp_found: |
166 | rsdp_found: |
167 | LOG("%p: ACPI Root System Description Pointer\n", acpi_rsdp); |
167 | LOG("%p: ACPI Root System Description Pointer\n", acpi_rsdp); |
168 | 168 | ||
169 | acpi_rsdt = (struct acpi_rsdt *) (unative_t) acpi_rsdp->rsdt_address; |
169 | acpi_rsdt = (struct acpi_rsdt *) (unative_t) acpi_rsdp->rsdt_address; |
- | 170 | if (acpi_rsdp->revision) |
|
170 | if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) acpi_rsdp->xsdt_address); |
171 | acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) acpi_rsdp->xsdt_address); |
171 | 172 | ||
- | 173 | if (acpi_rsdt) |
|
172 | if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
174 | map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
- | 175 | if (acpi_xsdt) |
|
173 | if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
176 | map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
174 | 177 | ||
175 | if (acpi_rsdt && !acpi_sdt_check((uint8_t *) acpi_rsdt)) { |
178 | if (acpi_rsdt && !acpi_sdt_check((uint8_t *) acpi_rsdt)) { |
176 | printf("RSDT: bad checksum\n"); |
179 | printf("RSDT: bad checksum\n"); |
177 | return; |
180 | return; |
178 | } |
181 | } |
179 | if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) { |
182 | if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) { |
180 | printf("XSDT: bad checksum\n"); |
183 | printf("XSDT: bad checksum\n"); |
181 | return; |
184 | return; |
182 | } |
185 | } |
183 | 186 | ||
- | 187 | if (acpi_xsdt) |
|
184 | if (acpi_xsdt) configure_via_xsdt(); |
188 | configure_via_xsdt(); |
- | 189 | else if (acpi_rsdt) |
|
185 | else if (acpi_rsdt) configure_via_rsdt(); |
190 | configure_via_rsdt(); |
186 | 191 | ||
187 | } |
192 | } |
188 | 193 | ||
189 | /** @} |
194 | /** @} |
190 | */ |
195 | */ |
191 | 196 |