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#include <types.h>
#include <StringOperations.h>
typedef decltype(nullptr) nulltype;
struct descHeader
{
char signature[4];
uint32 length;
uint8 revision;
uint8 checksum;
char oemId[6];
uint64 oemTableId;
uint32 oemRevision;
uint32 creatorId;
uint32 creatorRevision;
} __attribute__((packed));
struct rsdt
{
descHeader header;
uint32 firstEntryAddr;
} __attribute__((packed, aligned(sizeof(uint32))));
struct xsdt
{
descHeader header;
uint64 firstEntryAddr;
} __attribute__((packed, aligned(sizeof(uint32))));
struct rsdp
{
char signature[8];
uint8 checksum;
char oemId[6];
uint8 revision;
uint32 rsdtAddress;
uint32 length;
uint32 xsdtAddress;
uint8 extendedChecksum;
char reserved[3];
} __attribute__((packed));
class DescriptorTable
{
};
class Entry
{
private:
uint32 sizeHeadersInBytes;
const struct descHeader **headers;
// DescriptorTable &tables;
public:
Entry() = delete;
Entry(const uint32 sizeEntriesBytes, const uint32 *entryAddress);
Entry(const nulltype null);
};
class Rsdt
{
private:
const struct rsdt* rsdtStruct;
Entry entry;
public:
Rsdt() = delete;
Rsdt(const uint32 addr);
Rsdt(const nulltype null);
const Entry& getEntries();
};
class Xsdt
{
private:
const struct xsdt* xsdtStruct;
public:
Xsdt() = delete;
Xsdt(const uint32 addr);
Xsdt(const nulltype null);
};
class Rsdp
{
private:
const uint8 validFieldRevision = 2;
// RSDP memory address areas in IA-PC systems
const char *rsdpSign = "RSD PTR ";
const MemArea rsdpRomMemArea = MemArea(0xe0000, 0xfffff);
const MemArea rsdpEbdaMemArea = MemArea(0x80000, 0x803ff);
const struct rsdp *rsdpStruct;
Rsdt rsdtObj;
Xsdt xsdtObj;
public:
Rsdp();
const Rsdt *getRsdt() const;
const Xsdt *getXsdt() const;
};
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