Improved build system

Added new entries to .gitignore
Moved away from source directory as central spot for all source code

kernel/drivers/acpi/acpi.cpp

@@ -0,0 +1,15 @@
+#include "acpi.h"
+RSDPTR* ACPI::rsd_ptr;
+RSDT* ACPI::rsd_table;
+
+
+
+void ACPI::initialize(){
+
+    // Find the Root System Description Pointer
+    ACPI::rsd_ptr = FindRSD();
+    printRSD(rsd_ptr);
+
+    //  Get the Root System Description Table
+    ACPI::rsd_table = getRSDT((RSDPTR*)((uint32_t)rsd_ptr + 0xC00000000));
+}

kernel/drivers/acpi/acpi.h

@@ -0,0 +1,13 @@
+#pragma once 
+#include "rsdp.h"
+class ACPI {
+    public:
+        static void initialize();
+        
+        // In the future ACPI might start
+        // doing more systems initialization
+        
+    private:
+       static RSDPTR* rsd_ptr;
+       static RSDT* rsd_table;
+};

kernel/drivers/acpi/rsdp.cpp

@@ -0,0 +1,45 @@
+#include "rsdp.h"
+
+void printRSD(RSDPTR* 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 );
+}
+
+RSDPTR* FindRSD(){
+    char* memory_byte = (char*) 0xC00f2e14;
+    const void* string = "RSD PTR ";
+
+    for( ; (uint32_t) memory_byte < 0xC0100000; memory_byte+=10){
+        if( memcmp(memory_byte , string , 8 ) ==  0 ) {
+        printf("RSD PTR found at 0x%x !\n", memory_byte);
+        break;
+        }
+    }
+
+    return (RSDPTR*) memory_byte;
+}
+
+
+RSDT* getRSDT(RSDPTR* rsd){
+
+        RSDT* rsdt = (RSDT*) rsd->RsdtAddress;
+
+        printf("OEMID: ");
+        for(int i = 0; i < 6; i++){
+            kterm_put(rsdt->header.OEMID[i]);
+        }
+        kterm_put('\n');
+        return rsdt;
+}

kernel/drivers/acpi/rsdp.h

@@ -0,0 +1,35 @@
+#pragma once
+#include <stdint.h>
+#include "./../../terminal/kterm.h"
+#include <CoreLib/Memory.h>
+
+struct RSDPTR {
+    char signature[8];
+    uint8_t Checksum ;
+    char OEMID [6];
+    uint8_t Revision;
+    uint32_t RsdtAddress;
+}__attribute__((packed));
+
+struct ACPISDTHeader{
+    char Signature[4];
+    uint32_t Length;
+    uint8_t CheckSum;
+    char OEMID[6];
+    char OEMTableID[8];
+    uint32_t OEMRevision;
+    uint32_t CreatorID;
+    uint32_t CreatorRevision;
+}__attribute__((packed));
+
+
+struct RSDT{
+    struct ACPISDTHeader header;
+    uint32_t PointerToSDT[]; // Length of array : (header.Length - sizeof(header))/ 4
+}__attribute__((packed));
+
+RSDPTR* FindRSD();
+
+void printRSD(RSDPTR* rsd);
+
+RSDT* getRSDT(RSDPTR* rsd);