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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 | { (uint8_t *)"APIC", (void *) &acpi_madt, "Multiple APIC Description Table" } |
53 | { (uint8_t *)"APIC", (void *) &acpi_madt, "Multiple APIC Description Table" } |
54 | }; |
54 | }; |
55 | 55 | ||
56 | static int rsdp_check(uint8_t *rsdp) { |
56 | static int rsdp_check(uint8_t *rsdp) { |
57 | struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; |
57 | struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; |
58 | uint8_t sum = 0; |
58 | uint8_t sum = 0; |
59 | int i; |
59 | int i; |
60 | 60 | ||
61 | for (i=0; i<20; i++) |
61 | for (i=0; i<20; i++) |
62 | sum += rsdp[i]; |
62 | sum += rsdp[i]; |
63 | 63 | ||
64 | if (sum) |
64 | if (sum) |
65 | return 0; /* bad checksum */ |
65 | return 0; /* bad checksum */ |
66 | 66 | ||
67 | if (r->revision == 0) |
67 | if (r->revision == 0) |
68 | return 1; /* ACPI 1.0 */ |
68 | return 1; /* ACPI 1.0 */ |
69 | 69 | ||
70 | for (; i<r->length; i++) |
70 | for (; i<r->length; i++) |
71 | sum += rsdp[i]; |
71 | sum += rsdp[i]; |
72 | 72 | ||
73 | return !sum; |
73 | return !sum; |
74 | 74 | ||
75 | } |
75 | } |
76 | 76 | ||
77 | int acpi_sdt_check(uint8_t *sdt) |
77 | int acpi_sdt_check(uint8_t *sdt) |
78 | { |
78 | { |
79 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt; |
79 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt; |
80 | uint8_t sum = 0; |
80 | uint8_t sum = 0; |
81 | int i; |
81 | int i; |
82 | 82 | ||
83 | for (i=0; i<h->length; i++) |
83 | for (i=0; i<h->length; i++) |
84 | sum += sdt[i]; |
84 | sum += sdt[i]; |
85 | 85 | ||
86 | return !sum; |
86 | return !sum; |
87 | } |
87 | } |
88 | 88 | ||
89 | static void map_sdt(struct acpi_sdt_header *sdt) |
89 | static void map_sdt(struct acpi_sdt_header *sdt) |
90 | { |
90 | { |
91 | page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, PAGE_NOT_CACHEABLE); |
91 | page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, PAGE_NOT_CACHEABLE); |
92 | map_structure((uintptr_t) sdt, sdt->length); |
92 | map_structure((uintptr_t) sdt, sdt->length); |
93 | } |
93 | } |
94 | 94 | ||
95 | static void configure_via_rsdt(void) |
95 | static void configure_via_rsdt(void) |
96 | { |
96 | { |
97 | int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(uint32_t); |
97 | int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(uint32_t); |
98 | 98 | ||
99 | for (i=0; i<cnt; i++) { |
99 | for (i=0; i<cnt; i++) { |
100 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
100 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
101 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) (unative_t) acpi_rsdt->entry[i]; |
101 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) (unative_t) acpi_rsdt->entry[i]; |
102 | 102 | ||
103 | map_sdt(h); |
103 | map_sdt(h); |
104 | if (*((uint32_t *) &h->signature[0])==*((uint32_t *) &signature_map[j].signature[0])) { |
104 | if (*((uint32_t *) &h->signature[0])==*((uint32_t *) &signature_map[j].signature[0])) { |
105 | if (!acpi_sdt_check((uint8_t *) h)) |
105 | if (!acpi_sdt_check((uint8_t *) h)) |
106 | goto next; |
106 | goto next; |
107 | *signature_map[j].sdt_ptr = h; |
107 | *signature_map[j].sdt_ptr = h; |
108 | printf("%#zx: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
108 | printf("%#zx: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
109 | } |
109 | } |
110 | } |
110 | } |
111 | next: |
111 | next: |
112 | ; |
112 | ; |
113 | } |
113 | } |
114 | } |
114 | } |
115 | 115 | ||
116 | static void configure_via_xsdt(void) |
116 | static void configure_via_xsdt(void) |
117 | { |
117 | { |
118 | int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(uint64_t); |
118 | int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(uint64_t); |
119 | 119 | ||
120 | for (i=0; i<cnt; i++) { |
120 | for (i=0; i<cnt; i++) { |
121 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
121 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
122 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((uintptr_t) acpi_rsdt->entry[i]); |
122 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((uintptr_t) acpi_rsdt->entry[i]); |
123 | 123 | ||
124 | map_sdt(h); |
124 | map_sdt(h); |
125 | if (*((uint32_t *) &h->signature[0])==*((uint32_t *) &signature_map[j].signature[0])) { |
125 | if (*((uint32_t *) &h->signature[0])==*((uint32_t *) &signature_map[j].signature[0])) { |
126 | if (!acpi_sdt_check((uint8_t *) h)) |
126 | if (!acpi_sdt_check((uint8_t *) h)) |
127 | goto next; |
127 | goto next; |
128 | *signature_map[j].sdt_ptr = h; |
128 | *signature_map[j].sdt_ptr = h; |
129 | printf("%#zx: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
129 | printf("%#zx: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
130 | } |
130 | } |
131 | } |
131 | } |
132 | next: |
132 | next: |
133 | ; |
133 | ; |
134 | } |
134 | } |
135 | 135 | ||
136 | } |
136 | } |
137 | 137 | ||
138 | void acpi_init(void) |
138 | void acpi_init(void) |
139 | { |
139 | { |
140 | uint8_t *addr[2] = { NULL, (uint8_t *) PA2KA(0xe0000) }; |
140 | uint8_t *addr[2] = { NULL, (uint8_t *) PA2KA(0xe0000) }; |
141 | int i, j, length[2] = { 1024, 128*1024 }; |
141 | int i, j, length[2] = { 1024, 128*1024 }; |
142 | uint64_t *sig = (uint64_t *) RSDP_SIGNATURE; |
142 | uint64_t *sig = (uint64_t *) RSDP_SIGNATURE; |
143 | 143 | ||
144 | /* |
144 | /* |
145 | * Find Root System Description Pointer |
145 | * Find Root System Description Pointer |
146 | * 1. search first 1K of EBDA |
146 | * 1. search first 1K of EBDA |
147 | * 2. search 128K starting at 0xe0000 |
147 | * 2. search 128K starting at 0xe0000 |
148 | */ |
148 | */ |
149 | 149 | ||
150 | addr[0] = (uint8_t *) PA2KA(ebda); |
150 | addr[0] = (uint8_t *) PA2KA(ebda); |
151 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
151 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
152 | for (j = 0; j < length[i]; j += 16) { |
152 | for (j = 0; j < length[i]; j += 16) { |
153 | if (*((uint64_t *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
153 | if (*((uint64_t *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
154 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
154 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
155 | goto rsdp_found; |
155 | goto rsdp_found; |
156 | } |
156 | } |
157 | } |
157 | } |
158 | } |
158 | } |
159 | 159 | ||
160 | return; |
160 | return; |
161 | 161 | ||
162 | rsdp_found: |
162 | rsdp_found: |
163 | printf("%#zx: ACPI Root System Description Pointer\n", acpi_rsdp); |
163 | printf("%#zx: ACPI Root System Description Pointer\n", acpi_rsdp); |
164 | 164 | ||
165 | acpi_rsdt = (struct acpi_rsdt *) (unative_t) acpi_rsdp->rsdt_address; |
165 | acpi_rsdt = (struct acpi_rsdt *) (unative_t) acpi_rsdp->rsdt_address; |
166 | if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) acpi_rsdp->xsdt_address); |
166 | if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) acpi_rsdp->xsdt_address); |
167 | 167 | ||
168 | if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
168 | if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
169 | if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
169 | if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
170 | 170 | ||
171 | if (acpi_rsdt && !acpi_sdt_check((uint8_t *) acpi_rsdt)) { |
171 | if (acpi_rsdt && !acpi_sdt_check((uint8_t *) acpi_rsdt)) { |
172 | printf("RSDT: %s\n", "bad checksum"); |
172 | printf("RSDT: %s\n", "bad checksum"); |
173 | return; |
173 | return; |
174 | } |
174 | } |
175 | if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) { |
175 | if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) { |
176 | printf("XSDT: %s\n", "bad checksum"); |
176 | printf("XSDT: %s\n", "bad checksum"); |
177 | return; |
177 | return; |
178 | } |
178 | } |
179 | 179 | ||
180 | if (acpi_xsdt) configure_via_xsdt(); |
180 | if (acpi_xsdt) configure_via_xsdt(); |
181 | else if (acpi_rsdt) configure_via_rsdt(); |
181 | else if (acpi_rsdt) configure_via_rsdt(); |
182 | 182 | ||
183 | } |
183 | } |
184 | 184 | ||
185 | /** @} |
185 | /** @} |
186 | */ |
186 | */ |
187 | 187 |