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