Changeset 793cf029 in mainline
- Timestamp:
- 2010-06-29T15:38:52Z (14 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- 263bda2, f56e897f
- Parents:
- c5da138
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
kernel/genarch/src/acpi/acpi.c
rc5da138 r793cf029 33 33 /** 34 34 * @file 35 * @brief 36 */ 37 35 * @brief Advanced Configuration and Power Interface (ACPI) initialization. 36 */ 37 38 38 #include <genarch/acpi/acpi.h> 39 39 #include <genarch/acpi/madt.h> … … 43 43 #include <print.h> 44 44 45 #define RSDP_SIGNATURE 46 #define RSDP_REVISION_OFFS 45 #define RSDP_SIGNATURE "RSD PTR " 46 #define RSDP_REVISION_OFFS 15 47 47 48 48 #define CMP_SIGNATURE(left, right) \ … … 64 64 }; 65 65 66 static int rsdp_check(uint8_t *rsdp) { 67 struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; 66 static int rsdp_check(uint8_t *_rsdp) { 67 struct acpi_rsdp *rsdp = (struct acpi_rsdp *) _rsdp; 68 uint8_t sum = 0; 69 uint32_t i; 70 71 for (i = 0; i < 20; i++) 72 sum = (uint8_t) (sum + _rsdp[i]); 73 74 if (sum) 75 return 0; /* bad checksum */ 76 77 if (rsdp->revision == 0) 78 return 1; /* ACPI 1.0 */ 79 80 for (; i < rsdp->length; i++) 81 sum = (uint8_t) (sum + _rsdp[i]); 82 83 return !sum; 84 } 85 86 int acpi_sdt_check(uint8_t *sdt) 87 { 88 struct acpi_sdt_header *hdr = (struct acpi_sdt_header *) sdt; 68 89 uint8_t sum = 0; 69 90 unsigned int i; 70 91 71 for (i = 0; i < 20; i++) 72 sum = (uint8_t) (sum + rsdp[i]); 73 74 if (sum) 75 return 0; /* bad checksum */ 76 77 if (r->revision == 0) 78 return 1; /* ACPI 1.0 */ 79 80 for (; i < r->length; i++) 81 sum = (uint8_t) (sum + rsdp[i]); 82 92 for (i = 0; i < hdr->length; i++) 93 sum = (uint8_t) (sum + sdt[i]); 94 83 95 return !sum; 84 85 }86 87 int acpi_sdt_check(uint8_t *sdt)88 {89 struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt;90 uint8_t sum = 0;91 unsigned int i;92 93 for (i = 0; i < h->length; i++)94 sum = (uint8_t) (sum + sdt[i]);95 96 return !sum;97 96 } 98 97 … … 100 99 { 101 100 page_table_lock(AS_KERNEL, true); 102 page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, PAGE_NOT_CACHEABLE | PAGE_WRITE); 101 page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, 102 PAGE_NOT_CACHEABLE | PAGE_WRITE); 103 103 map_structure((uintptr_t) sdt, sdt->length); 104 104 page_table_unlock(AS_KERNEL, true); … … 107 107 static void configure_via_rsdt(void) 108 108 { 109 unsigned int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint32_t); 109 size_t i; 110 size_t j; 111 size_t cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header)) 112 / sizeof(uint32_t); 110 113 111 114 for (i = 0; i < cnt; i++) { 112 for (j = 0; j < sizeof(signature_map) / sizeof(struct acpi_signature_map); j++) { 113 struct acpi_sdt_header *h = (struct acpi_sdt_header *) (unative_t) acpi_rsdt->entry[i]; 114 115 map_sdt(h); 116 if (CMP_SIGNATURE(h->signature, signature_map[j].signature)) { 117 if (!acpi_sdt_check((uint8_t *) h)) 118 goto next; 119 *signature_map[j].sdt_ptr = h; 120 LOG("%p: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); 115 for (j = 0; j < sizeof(signature_map) 116 / sizeof(struct acpi_signature_map); j++) { 117 struct acpi_sdt_header *hdr = 118 (struct acpi_sdt_header *) (unative_t) acpi_rsdt->entry[i]; 119 120 map_sdt(hdr); 121 if (CMP_SIGNATURE(hdr->signature, signature_map[j].signature)) { 122 if (!acpi_sdt_check((uint8_t *) hdr)) 123 break; 124 125 *signature_map[j].sdt_ptr = hdr; 126 LOG("%p: ACPI %s", *signature_map[j].sdt_ptr, 127 signature_map[j].description); 121 128 } 122 129 } 123 next:124 ;125 130 } 126 131 } … … 128 133 static void configure_via_xsdt(void) 129 134 { 130 unsigned int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint64_t); 135 size_t i; 136 size_t j; 137 size_t cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header)) 138 / sizeof(uint64_t); 131 139 132 140 for (i = 0; i < cnt; i++) { 133 for (j = 0; j < sizeof(signature_map) / sizeof(struct acpi_signature_map); j++) { 134 struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((uintptr_t) acpi_xsdt->entry[i]); 135 136 map_sdt(h); 137 if (CMP_SIGNATURE(h->signature, signature_map[j].signature)) { 138 if (!acpi_sdt_check((uint8_t *) h)) 139 goto next; 140 *signature_map[j].sdt_ptr = h; 141 LOG("%p: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); 141 for (j = 0; j < sizeof(signature_map) 142 / sizeof(struct acpi_signature_map); j++) { 143 struct acpi_sdt_header *hdr = 144 (struct acpi_sdt_header *) ((uintptr_t) acpi_xsdt->entry[i]); 145 146 map_sdt(hdr); 147 if (CMP_SIGNATURE(hdr->signature, signature_map[j].signature)) { 148 if (!acpi_sdt_check((uint8_t *) hdr)) 149 break; 150 151 *signature_map[j].sdt_ptr = hdr; 152 LOG("%p: ACPI %s", *signature_map[j].sdt_ptr, 153 signature_map[j].description); 142 154 } 143 155 } 144 next: 145 ; 146 } 147 156 } 148 157 } 149 158 … … 151 160 { 152 161 uint8_t *addr[2] = { NULL, (uint8_t *) PA2KA(0xe0000) }; 153 int i, j, length[2] = { 1024, 128*1024 }; 162 unsigned int i; 163 unsigned int j; 164 unsigned int length[2] = { 1024, 128 * 1024 }; 154 165 uint64_t *sig = (uint64_t *) RSDP_SIGNATURE; 155 166 156 167 /* 157 168 * Find Root System Description Pointer … … 159 170 * 2. search 128K starting at 0xe0000 160 171 */ 161 172 162 173 addr[0] = (uint8_t *) PA2KA(ebda); 163 174 for (i = (ebda ? 0 : 1); i < 2; i++) { 164 175 for (j = 0; j < length[i]; j += 16) { 165 if (*((uint64_t *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { 176 if ((*((uint64_t *) &addr[i][j]) == *sig) 177 && (rsdp_check(&addr[i][j]))) { 166 178 acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; 167 179 goto rsdp_found; … … 169 181 } 170 182 } 171 183 172 184 return; 173 185 174 186 rsdp_found: 175 LOG("%p: ACPI Root System Description Pointer \n", acpi_rsdp);176 177 acpi_rsdt = (struct acpi_rsdt *) ( unative_t) acpi_rsdp->rsdt_address;187 LOG("%p: ACPI Root System Description Pointer", acpi_rsdp); 188 189 acpi_rsdt = (struct acpi_rsdt *) ((uintptr_t) acpi_rsdp->rsdt_address); 178 190 if (acpi_rsdp->revision) 179 191 acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) acpi_rsdp->xsdt_address); 180 192 181 193 if (acpi_rsdt) 182 194 map_sdt((struct acpi_sdt_header *) acpi_rsdt); 195 183 196 if (acpi_xsdt) 184 197 map_sdt((struct acpi_sdt_header *) acpi_xsdt); 185 186 if ( acpi_rsdt && !acpi_sdt_check((uint8_t *) acpi_rsdt)) {198 199 if ((acpi_rsdt) && (!acpi_sdt_check((uint8_t *) acpi_rsdt))) { 187 200 printf("RSDT: bad checksum\n"); 188 201 return; 189 202 } 190 if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) { 203 204 if ((acpi_xsdt) && (!acpi_sdt_check((uint8_t *) acpi_xsdt))) { 191 205 printf("XSDT: bad checksum\n"); 192 206 return; 193 207 } 194 208 195 209 if (acpi_xsdt) 196 210 configure_via_xsdt(); 197 211 else if (acpi_rsdt) 198 212 configure_via_rsdt(); 199 200 213 } 201 214
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