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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 | ||
- | 30 | /** @addtogroup genarch |
|
- | 31 | * @ingroup others |
|
- | 32 | * @{ |
|
- | 33 | */ |
|
- | 34 | ||
29 | /** |
35 | /** |
30 | * @file acpi.c |
36 | * @file |
31 | * @brief Advanced Configuration and Power Interface (ACPI) initialization. |
37 | * @brief Advanced Configuration and Power Interface (ACPI) initialization. |
32 | */ |
38 | */ |
33 | 39 | ||
34 | #include <genarch/acpi/acpi.h> |
40 | #include <genarch/acpi/acpi.h> |
35 | #include <genarch/acpi/madt.h> |
41 | #include <genarch/acpi/madt.h> |
36 | #include <arch/bios/bios.h> |
42 | #include <arch/bios/bios.h> |
37 | #include <mm/as.h> |
43 | #include <mm/as.h> |
38 | #include <mm/page.h> |
44 | #include <mm/page.h> |
39 | #include <print.h> |
45 | #include <print.h> |
40 | 46 | ||
41 | #define RSDP_SIGNATURE "RSD PTR " |
47 | #define RSDP_SIGNATURE "RSD PTR " |
42 | #define RSDP_REVISION_OFFS 15 |
48 | #define RSDP_REVISION_OFFS 15 |
43 | 49 | ||
44 | struct acpi_rsdp *acpi_rsdp = NULL; |
50 | struct acpi_rsdp *acpi_rsdp = NULL; |
45 | struct acpi_rsdt *acpi_rsdt = NULL; |
51 | struct acpi_rsdt *acpi_rsdt = NULL; |
46 | struct acpi_xsdt *acpi_xsdt = NULL; |
52 | struct acpi_xsdt *acpi_xsdt = NULL; |
47 | 53 | ||
48 | struct acpi_signature_map signature_map[] = { |
54 | struct acpi_signature_map signature_map[] = { |
49 | { (__u8 *)"APIC", (void *) &acpi_madt, "Multiple APIC Description Table" } |
55 | { (__u8 *)"APIC", (void *) &acpi_madt, "Multiple APIC Description Table" } |
50 | }; |
56 | }; |
51 | 57 | ||
52 | static int rsdp_check(__u8 *rsdp) { |
58 | static int rsdp_check(__u8 *rsdp) { |
53 | struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; |
59 | struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; |
54 | __u8 sum = 0; |
60 | __u8 sum = 0; |
55 | int i; |
61 | int i; |
56 | 62 | ||
57 | for (i=0; i<20; i++) |
63 | for (i=0; i<20; i++) |
58 | sum += rsdp[i]; |
64 | sum += rsdp[i]; |
59 | 65 | ||
60 | if (sum) |
66 | if (sum) |
61 | return 0; /* bad checksum */ |
67 | return 0; /* bad checksum */ |
62 | 68 | ||
63 | if (r->revision == 0) |
69 | if (r->revision == 0) |
64 | return 1; /* ACPI 1.0 */ |
70 | return 1; /* ACPI 1.0 */ |
65 | 71 | ||
66 | for (; i<r->length; i++) |
72 | for (; i<r->length; i++) |
67 | sum += rsdp[i]; |
73 | sum += rsdp[i]; |
68 | 74 | ||
69 | return !sum; |
75 | return !sum; |
70 | 76 | ||
71 | } |
77 | } |
72 | 78 | ||
73 | int acpi_sdt_check(__u8 *sdt) |
79 | int acpi_sdt_check(__u8 *sdt) |
74 | { |
80 | { |
75 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt; |
81 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt; |
76 | __u8 sum = 0; |
82 | __u8 sum = 0; |
77 | int i; |
83 | int i; |
78 | 84 | ||
79 | for (i=0; i<h->length; i++) |
85 | for (i=0; i<h->length; i++) |
80 | sum += sdt[i]; |
86 | sum += sdt[i]; |
81 | 87 | ||
82 | return !sum; |
88 | return !sum; |
83 | } |
89 | } |
84 | 90 | ||
85 | static void map_sdt(struct acpi_sdt_header *sdt) |
91 | static void map_sdt(struct acpi_sdt_header *sdt) |
86 | { |
92 | { |
87 | page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE); |
93 | page_mapping_insert(AS_KERNEL, (__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE); |
88 | map_structure((__address) sdt, sdt->length); |
94 | map_structure((__address) sdt, sdt->length); |
89 | } |
95 | } |
90 | 96 | ||
91 | static void configure_via_rsdt(void) |
97 | static void configure_via_rsdt(void) |
92 | { |
98 | { |
93 | int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32); |
99 | int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32); |
94 | 100 | ||
95 | for (i=0; i<cnt; i++) { |
101 | for (i=0; i<cnt; i++) { |
96 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
102 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
97 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) (__native) acpi_rsdt->entry[i]; |
103 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) (__native) acpi_rsdt->entry[i]; |
98 | 104 | ||
99 | map_sdt(h); |
105 | map_sdt(h); |
100 | if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
106 | if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
101 | if (!acpi_sdt_check((__u8 *) h)) |
107 | if (!acpi_sdt_check((__u8 *) h)) |
102 | goto next; |
108 | goto next; |
103 | *signature_map[j].sdt_ptr = h; |
109 | *signature_map[j].sdt_ptr = h; |
104 | printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
110 | printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
105 | } |
111 | } |
106 | } |
112 | } |
107 | next: |
113 | next: |
108 | ; |
114 | ; |
109 | } |
115 | } |
110 | } |
116 | } |
111 | 117 | ||
112 | static void configure_via_xsdt(void) |
118 | static void configure_via_xsdt(void) |
113 | { |
119 | { |
114 | int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64); |
120 | int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64); |
115 | 121 | ||
116 | for (i=0; i<cnt; i++) { |
122 | for (i=0; i<cnt; i++) { |
117 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
123 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
118 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((__address) acpi_rsdt->entry[i]); |
124 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((__address) acpi_rsdt->entry[i]); |
119 | 125 | ||
120 | map_sdt(h); |
126 | map_sdt(h); |
121 | if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
127 | if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
122 | if (!acpi_sdt_check((__u8 *) h)) |
128 | if (!acpi_sdt_check((__u8 *) h)) |
123 | goto next; |
129 | goto next; |
124 | *signature_map[j].sdt_ptr = h; |
130 | *signature_map[j].sdt_ptr = h; |
125 | printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
131 | printf("%#zX: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
126 | } |
132 | } |
127 | } |
133 | } |
128 | next: |
134 | next: |
129 | ; |
135 | ; |
130 | } |
136 | } |
131 | 137 | ||
132 | } |
138 | } |
133 | 139 | ||
134 | void acpi_init(void) |
140 | void acpi_init(void) |
135 | { |
141 | { |
136 | __u8 *addr[2] = { NULL, (__u8 *) PA2KA(0xe0000) }; |
142 | __u8 *addr[2] = { NULL, (__u8 *) PA2KA(0xe0000) }; |
137 | int i, j, length[2] = { 1024, 128*1024 }; |
143 | int i, j, length[2] = { 1024, 128*1024 }; |
138 | __u64 *sig = (__u64 *) RSDP_SIGNATURE; |
144 | __u64 *sig = (__u64 *) RSDP_SIGNATURE; |
139 | 145 | ||
140 | /* |
146 | /* |
141 | * Find Root System Description Pointer |
147 | * Find Root System Description Pointer |
142 | * 1. search first 1K of EBDA |
148 | * 1. search first 1K of EBDA |
143 | * 2. search 128K starting at 0xe0000 |
149 | * 2. search 128K starting at 0xe0000 |
144 | */ |
150 | */ |
145 | 151 | ||
146 | addr[0] = (__u8 *) PA2KA(ebda); |
152 | addr[0] = (__u8 *) PA2KA(ebda); |
147 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
153 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
148 | for (j = 0; j < length[i]; j += 16) { |
154 | for (j = 0; j < length[i]; j += 16) { |
149 | if (*((__u64 *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
155 | if (*((__u64 *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
150 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
156 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
151 | goto rsdp_found; |
157 | goto rsdp_found; |
152 | } |
158 | } |
153 | } |
159 | } |
154 | } |
160 | } |
155 | 161 | ||
156 | return; |
162 | return; |
157 | 163 | ||
158 | rsdp_found: |
164 | rsdp_found: |
159 | printf("%#zX: ACPI Root System Description Pointer\n", acpi_rsdp); |
165 | printf("%#zX: ACPI Root System Description Pointer\n", acpi_rsdp); |
160 | 166 | ||
161 | acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address; |
167 | acpi_rsdt = (struct acpi_rsdt *) (__native) acpi_rsdp->rsdt_address; |
162 | if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address); |
168 | if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address); |
163 | 169 | ||
164 | if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
170 | if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
165 | if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
171 | if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
166 | 172 | ||
167 | if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) { |
173 | if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) { |
168 | printf("RSDT: %s\n", "bad checksum"); |
174 | printf("RSDT: %s\n", "bad checksum"); |
169 | return; |
175 | return; |
170 | } |
176 | } |
171 | if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) { |
177 | if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) { |
172 | printf("XSDT: %s\n", "bad checksum"); |
178 | printf("XSDT: %s\n", "bad checksum"); |
173 | return; |
179 | return; |
174 | } |
180 | } |
175 | 181 | ||
176 | if (acpi_xsdt) configure_via_xsdt(); |
182 | if (acpi_xsdt) configure_via_xsdt(); |
177 | else if (acpi_rsdt) configure_via_rsdt(); |
183 | else if (acpi_rsdt) configure_via_rsdt(); |
178 | 184 | ||
179 | } |
185 | } |
180 | 186 | ||
- | 187 | ||
- | 188 | /** @} |
|
- | 189 | */ |
|
- | 190 | ||
181 | 191 |