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