BarinkOS/kernel/acpi/rsdp.cpp

40 lines
941 B
C++

#include "rsdp.h"
#include "../memory/VirtualMemoryManager.h"
void printRSD(RSDPDescriptor* rsd){
printf("Signature: ");
for(int i = 0; i < 8; i++){
kterm_put(rsd->signature[i]);
}
kterm_put('\n');
printf("OEMID: ");
for(int i =0; i < 6 ; i++){
kterm_put (rsd->OEMID[i]);
}
kterm_put('\n');
printf("Revision: %d\n", rsd->Revision);
printf("RSDT Address: 0x%x\n", rsd->RsdtAddress );
}
RSDPDescriptor* FindRSD(){
char* memory_byte = (char*) 0x000f2e14;
const void* string = "RSD PTR ";
for( ; (uint32_t) memory_byte < 0x00100000; memory_byte+=10){
if( memcmp(memory_byte , string , 8 ) == 0 ) {
printf("RSD PTR found at 0x%x !\n", memory_byte);
break;
}
}
return (RSDPDescriptor*) memory_byte;
}
RSDT* getRSDT(RSDPDescriptor* rsd){
printf("rsdt Address: 0x%x\n", rsd->RsdtAddress);
return (RSDT*)rsd->RsdtAddress ;
}