| 27,13 → 27,22 |
|---|
| */ |
| |
| #include <arch/acpi/acpi.h> |
| #include <arch/acpi/madt.h> |
| #include <arch/bios/bios.h> |
| |
| #include <mm/page.h> |
| |
| #define RSDP_SIGNATURE "RSD PTR " |
| #define RSDP_REVISION_OFFS 15 |
| |
| struct acpi_rsdp *acpi_rsdp = NULL; |
| struct acpi_rsdt *acpi_rsdt = NULL; |
| struct acpi_xsdt *acpi_xsdt = NULL; |
| |
| struct acpi_signature_map signature_map[] = { |
| { "APIC", (struct acpi_sdt_header **) &acpi_madt, "Multiple APIC Description Table" } |
| }; |
| |
| int rsdp_check(__u8 *rsdp) { |
| struct acpi_rsdp *r = (struct acpi_rsdp *) rsdp; |
| __u8 sum = 0; |
| 55,6 → 64,23 |
|---|
| |
| } |
| |
| int acpi_sdt_check(__u8 *sdt) |
| { |
| struct acpi_sdt_header *h = (struct acpi_sdt_header *) sdt; |
| __u8 sum = 0; |
| int i; |
| |
| for (i=0; i<h->length; i++) |
| sum += sdt[i]; |
| |
| return !sum; |
| } |
| |
| void map_sdt(struct acpi_sdt_header *sdt) |
| { |
| map_page_to_frame((__address) sdt, (__address) sdt, PAGE_NOT_CACHEABLE, 0); |
| } |
| |
| void acpi_init(void) |
| { |
| __u8 *addr[2] = { NULL, (__u8 *) 0xe0000 }; |
| 80,5 → 106,67 |
|---|
| return; |
| |
| rsdp_found: |
| printf("%L: ACPI Root System Description Pointer\n", acpi_rsdp); |
| printf("%L: ACPI Root System Description Pointer\n", acpi_rsdp); |
| |
| acpi_rsdt = (struct acpi_rsdt *) acpi_rsdp->rsdt_address; |
| if (acpi_rsdp->revision) acpi_xsdt = (struct acpi_xsdt *) ((__address) acpi_rsdp->xsdt_address); |
| |
| if (acpi_rsdt) map_sdt((struct acpi_sdt_header *) acpi_rsdt); |
| if (acpi_xsdt) map_sdt((struct acpi_sdt_header *) acpi_xsdt); |
| |
| if (acpi_rsdt && !acpi_sdt_check((__u8 *) acpi_rsdt)) { |
| printf("RSDT: %s\n", "bad checksum"); |
| return; |
| } |
| if (acpi_xsdt && !acpi_sdt_check((__u8 *) acpi_xsdt)) { |
| printf("XSDT: %s\n", "bad checksum"); |
| return; |
| } |
| |
| if (acpi_xsdt) configure_via_xsdt(); |
| else if (acpi_rsdt) configure_via_rsdt(); |
| |
| } |
| |
| void configure_via_rsdt(void) |
| { |
| int i, j, cnt = (acpi_rsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u32); |
| |
| for (i=0; i<cnt; i++) { |
| for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
| struct acpi_sdt_header *h = (struct acpi_sdt_header *) acpi_rsdt->entry[i]; |
| |
| map_sdt(h); |
| if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
| if (!acpi_sdt_check((__u8 *) h)) |
| goto next; |
| *signature_map[j].sdt_ptr = h; |
| printf("%L: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
| } |
| } |
| next: |
| ; |
| } |
| } |
| |
| void configure_via_xsdt(void) |
| { |
| int i, j, cnt = (acpi_xsdt->header.length - sizeof(struct acpi_sdt_header))/sizeof(__u64); |
| |
| for (i=0; i<cnt; i++) { |
| for (j=0; j<sizeof(signature_map)/sizeof(struct acpi_signature_map); j++) { |
| struct acpi_sdt_header *h = (struct acpi_sdt_header *) ((__address) acpi_rsdt->entry[i]); |
| |
| map_sdt(h); |
| if (*((__u32 *) &h->signature[0])==*((__u32 *) &signature_map[j].signature[0])) { |
| if (!acpi_sdt_check((__u8 *) h)) |
| goto next; |
| *signature_map[j].sdt_ptr = h; |
| printf("%L: ACPI %s\n", *signature_map[j].sdt_ptr, signature_map[j].description); |
| } |
| } |
| next: |
| ; |
| } |
| |
| } |