| 0,0 → 1,50 |
|---|
| #include <ddk.h> |
| #include <syscall.h> |
| #include "acpi.h" |
| |
| extern acpi_rsdp_t* acpi_rsdp; |
| extern acpi_rsdt_t* acpi_rsdt; |
| |
| addr_t acpi_ioapic; |
| addr_t acpi_local_apic; |
| |
| u8_t __fastcall acpi_table_checksum(u32_t length, u8_t *buffer); |
| |
| acpi_rsdp_t* acpi_locate() |
| { |
| /** @todo checksum, check version */ |
| addr_t p; |
| |
| for (p = ACPI_HI_RSDP_WINDOW_START; p < ACPI_HI_RSDP_WINDOW_END; p+=16) |
| { |
| acpi_rsdp_t* r = (acpi_rsdp_t*) p; |
| if ((r->sig[0] == 0x20445352) && |
| (r->sig[1] == 0x20525450) && |
| acpi_table_checksum(ACPI_RSDP_CHECKSUM_LENGTH, (u8_t*)r)==0 ) |
| { |
| return r; |
| }; |
| }; |
| /* not found */ |
| return NULL; |
| }; |
| |
| addr_t __fastcall rsdt_find(acpi_rsdt_t *rsdt, u32_t sig) |
| { |
| addr_t head = 0; |
| u32_t i; |
| |
| for (i = 0; i < ((rsdt->header.len-sizeof(acpi_thead_t))/ |
| sizeof(rsdt->ptrs[0])); i++) |
| { |
| acpi_thead_t* t= (acpi_thead_t*)acpi_remap_table(rsdt->ptrs[i]); |
| |
| if (t->sig == sig) |
| { |
| head = rsdt->ptrs[i]; |
| break; |
| }; |
| } |
| return head; |
| }; |
| |