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