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| Rev 116 | Rev 125 | ||
|---|---|---|---|
| Line 82... | Line 82... | ||
| 82 | map_structure((__address) sdt, sdt->length); |
82 | map_structure((__address) sdt, sdt->length); |
| 83 | } |
83 | } |
| 84 | 84 | ||
| 85 | void acpi_init(void) |
85 | void acpi_init(void) |
| 86 | { |
86 | { |
| 87 | __u8 *addr[2] = { NULL, (__u8 *) 0xe0000 }; |
87 | __u8 *addr[2] = { NULL, (__u8 *) 0xe0000 }; |
| 88 | int i, j, length[2] = { 1024, 128*1024 }; |
88 | int i, j, length[2] = { 1024, 128*1024 }; |
| 89 | __u64 *sig = (__u64 *) RSDP_SIGNATURE; |
89 | __u64 *sig = (__u64 *) RSDP_SIGNATURE; |
| 90 | 90 | ||
| 91 | /* |
91 | /* |
| 92 | * Find Root System Description Pointer |
92 | * Find Root System Description Pointer |
| 93 | * 1. search first 1K of EBDA |
93 | * 1. search first 1K of EBDA |
| 94 | * 2. search 128K starting at 0xe0000 |
94 | * 2. search 128K starting at 0xe0000 |
| 95 | */ |
95 | */ |
| 96 | 96 | ||
| 97 | addr[0] = (__u8 *) ebda; |
97 | addr[0] = (__u8 *) ebda; |
| 98 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
98 | for (i = (ebda ? 0 : 1); i < 2; i++) { |
| 99 | for (j = 0; j < length[i]; j += 16) { |
99 | for (j = 0; j < length[i]; j += 16) { |
| 100 | if (*((__u64 *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
100 | if (*((__u64 *) &addr[i][j]) == *sig && rsdp_check(&addr[i][j])) { |
| 101 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
101 | acpi_rsdp = (struct acpi_rsdp *) &addr[i][j]; |
| 102 | goto rsdp_found; |
102 | goto rsdp_found; |
| 103 | } |
103 | } |
| 104 | } |
104 | } |
| 105 | } |
105 | } |
| 106 | 106 | ||
| 107 | return; |
107 | return; |
| 108 | 108 | ||
| 109 | rsdp_found: |
109 | rsdp_found: |
| 110 | printf("%L: ACPI Root System Description Pointer\n", acpi_rsdp); |
110 | printf("%L: ACPI Root System Description Pointer\n", acpi_rsdp); |
| 111 | 111 | ||
| 112 | acpi_rsdt = (struct acpi_rsdt *) acpi_rsdp->rsdt_address; |
112 | acpi_rsdt = (struct acpi_rsdt *) acpi_rsdp->rsdt_address; |
| 113 | if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address); |
113 | if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address); |
| 114 | 114 | ||
| 115 | if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
115 | if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
| 116 | if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
116 | if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
| Line 135... | Line 135... | ||
| 135 | 135 | ||
| 136 | for (i=0; i<cnt; i++) { |
136 | for (i=0; i<cnt; i++) { |
| 137 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
137 | for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
| 138 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) acpi_rsdt->entry[i]; |
138 | struct acpi_sdt_header *h = (struct acpi_sdt_header *) acpi_rsdt->entry[i]; |
| 139 | 139 | ||
| 140 | map_sdt(h); |
140 | map_sdt(h); |
| 141 | if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
141 | if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
| 142 | if (!acpi_sdt_check((__u8 *) h)) |
142 | if (!acpi_sdt_check((__u8 *) h)) |
| 143 | goto next; |
143 | goto next; |
| 144 | *signature_map[j].sdt_ptr = h; |
144 | *signature_map[j].sdt_ptr = h; |
| 145 | printf("%L: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
145 | printf("%L: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |