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/* -------------------------------------------
Copyright Mahrouss Logic
------------------------------------------- */
#include <Builtins/ACPI/ACPIFactoryInterface.hxx>
#include <HALKit/AMD64/Processor.hpp>
///////////////////////////////////////////////////////////////////////////////////////
//! NOTE: fGSI stands 'Field Global System Interrupt'
///////////////////////////////////////////////////////////////////////////////////////
namespace NewOS::HAL {
constexpr Int32 kThreadAPIC = 0;
constexpr Int32 kThreadLAPIC = 1;
constexpr Int32 kThreadIOAPIC = 2;
constexpr Int32 kThreadAPIC64 = 3;
constexpr Int32 kThreadBoot = 4;
/*
*
* this is used to store info about the current running thread
* we use this struct to determine if we can use it, or mark it as used or on
* sleep.
*
*/
struct ProcessorInfoAMD64 final {
Int32 ThreadType;
UIntPtr JumpAddress;
struct {
UInt32 Code;
UInt32 Data;
UInt32 BSS;
} Selector;
};
STATIC voidPtr kApicMadt = nullptr;
STATIC const char* kApicSignature = "APIC";
/// @brief Multiple APIC descriptor table.
struct MadtType final : public SDT {
struct MadtAddress final {
UInt32 fPhysicalAddress;
UInt32 fFlags; // 1 = Dual Legacy PICs installed
Char fType;
Char fRecLen; // record length
};
};
struct MadtProcessorLocalApic final {
Char fProcessorId;
Char fApicId;
UInt32 fFlags;
};
struct MadtIOApic final {
Char fApicId;
Char fReserved;
UInt32 fAddress;
UInt32 fSystemInterruptBase;
};
struct MadtInterruptSource final {
Char fBusSource;
Char fIrqSource;
UInt32 fGSI;
UInt16 fFlags;
};
struct MadtInterruptNmi final {
Char fNmiSource;
Char fReserved;
UInt16 fFlags;
UInt32 fGSI;
};
struct MadtLocalApicAddressOverride final {
UInt16 fResvered;
UIntPtr fAddress;
};
///////////////////////////////////////////////////////////////////////////////////////
STATIC MadtType* kApicInfoBlock = nullptr;
///////////////////////////////////////////////////////////////////////////////////////
void hal_system_get_cores(voidPtr rsdPtr) {
kcout << "NewOS: Constructing ACPIFactoryInterface...\r\n";
auto acpi = ACPIFactoryInterface(rsdPtr);
kApicMadt = acpi.Find(kApicSignature).Leak().Leak();
MUST_PASS(kApicMadt); // MADT must exist.
kcout << "NewOS: Successfuly fetched the MADT!\r\n";
kApicInfoBlock = (MadtType*)kApicMadt;
}
} // namespace NewOS::HAL
///////////////////////////////////////////////////////////////////////////////////////
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