Changes in kernel/genarch/src/acpi/acpi.c [793cf029:e3ce39b] in mainline
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kernel/genarch/src/acpi/acpi.c
r793cf029 re3ce39b 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 *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; 66 static int rsdp_check(uint8_t *rsdp) { 67 struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; 89 68 uint8_t sum = 0; 90 69 unsigned int i; 91 70 92 for (i = 0; i < hdr->length; i++) 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 83 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++) 93 94 sum = (uint8_t) (sum + sdt[i]); 94 95 95 96 return !sum; 96 97 } … … 99 100 { 100 101 page_table_lock(AS_KERNEL, true); 101 page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, 102 PAGE_NOT_CACHEABLE | PAGE_WRITE); 102 page_mapping_insert(AS_KERNEL, (uintptr_t) sdt, (uintptr_t) sdt, 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 size_t i; 110 size_t j; 111 size_t cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header)) 112 / sizeof(uint32_t); 109 unsigned int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint32_t); 113 110 114 111 for (i = 0; i < cnt; i++) { 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); 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); 128 121 } 129 122 } 123 next: 124 ; 130 125 } 131 126 } … … 133 128 static void configure_via_xsdt(void) 134 129 { 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); 130 unsigned int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header)) / sizeof(uint64_t); 139 131 140 132 for (i = 0; i < cnt; i++) { 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); 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_rsdt->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); 154 142 } 155 143 } 156 } 144 next: 145 ; 146 } 147 157 148 } 158 149 … … 160 151 { 161 152 uint8_t *addr[2] = { NULL, (uint8_t *) PA2KA(0xe0000) }; 162 unsigned int i; 163 unsigned int j; 164 unsigned int length[2] = { 1024, 128 * 1024 }; 153 int i, j, length[2] = { 1024, 128*1024 }; 165 154 uint64_t *sig = (uint64_t *) RSDP_SIGNATURE; 166 155 167 156 /* 168 157 * Find Root System Description Pointer … … 170 159 * 2. search 128K starting at 0xe0000 171 160 */ 172 161 173 162 addr[0] = (uint8_t *) PA2KA(ebda); 174 163 for (i = (ebda ? 0 : 1); i < 2; i++) { 175 164 for (j = 0; j < length[i]; j += 16) { 176 if ((*((uint64_t *) &addr[i][j]) == *sig) 177 && (rsdp_check(&addr[i][j]))) { 165 if (*((uint64_t *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { 178 166 acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; 179 167 goto rsdp_found; … … 181 169 } 182 170 } 183 171 184 172 return; 185 173 186 174 rsdp_found: 187 LOG("%p: ACPI Root System Description Pointer ", acpi_rsdp);188 189 acpi_rsdt = (struct acpi_rsdt *) ( (uintptr_t) acpi_rsdp->rsdt_address);175 LOG("%p: ACPI Root System Description Pointer\n", acpi_rsdp); 176 177 acpi_rsdt = (struct acpi_rsdt *) (unative_t) acpi_rsdp->rsdt_address; 190 178 if (acpi_rsdp->revision) 191 179 acpi_xsdt = (struct acpi_xsdt *) ((uintptr_t) acpi_rsdp->xsdt_address); 192 180 193 181 if (acpi_rsdt) 194 182 map_sdt((struct acpi_sdt_header *) acpi_rsdt); 195 196 183 if (acpi_xsdt) 197 184 map_sdt((struct acpi_sdt_header *) acpi_xsdt); 198 199 if ( (acpi_rsdt) && (!acpi_sdt_check((uint8_t *) acpi_rsdt))) {185 186 if (acpi_rsdt && !acpi_sdt_check((uint8_t *) acpi_rsdt)) { 200 187 printf("RSDT: bad checksum\n"); 201 188 return; 202 189 } 203 204 if ((acpi_xsdt) && (!acpi_sdt_check((uint8_t *) acpi_xsdt))) { 190 if (acpi_xsdt && !acpi_sdt_check((uint8_t *) acpi_xsdt)) { 205 191 printf("XSDT: bad checksum\n"); 206 192 return; 207 193 } 208 194 209 195 if (acpi_xsdt) 210 196 configure_via_xsdt(); 211 197 else if (acpi_rsdt) 212 198 configure_via_rsdt(); 199 213 200 } 214 201
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