jaby
/
jabyengine
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 1 Wiki Activity

Prepare setup of CD drive

This commit is contained in:
Jaby 2023-01-22 11:02:27 +01:00
parent dd1a5ba6da
commit aae1d3e066
4 changed files with 52 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
include/PSX/System/IOPorts/cd_io.hpp
View File

@ -31,6 +31,7 @@ namespace JabyEngine {
struct InterruptEnable : public ComplexBitMap<uint8_t> {
static constexpr auto InterruptTypValue = BitRange<uint8_t>::from_to(0, 2);
static constexpr auto InterruptExtended = BitRange<uint8_t>::from_to(0, 4);
static constexpr auto UnknownIRQ = Bit<uint8_t>(3);
static constexpr auto CommandStartIRQ = Bit<uint8_t>(4);
};
@ -57,7 +58,11 @@ namespace JabyEngine {
};
struct Interrupt {
static void enable_all(VolatileBitMapPOD<InterruptEnable>& port) {
static void enable(VolatileBitMapPOD<InterruptEnable>& port) {
port.write(InterruptEnable::InterruptTypValue.max());
}
static void enable_extended(VolatileBitMapPOD<InterruptEnable>& port) {
port.write({InterruptEnable::with(InterruptEnable::InterruptTypValue.max(), InterruptEnable::UnknownIRQ, InterruptEnable::CommandStartIRQ)});
}
@ -68,6 +73,10 @@ namespace JabyEngine {
static void ack(VolatileBitMapPOD<InterruptFlag>& port) {
port.write(InterruptFlag::InterruptTypValue.max());
}
static void ack_extended(VolatileBitMapPOD<InterruptFlag>& port) {
port.write({InterruptFlag::with(InterruptFlag::InterruptTypValue.max(), InterruptEnable::UnknownIRQ, InterruptEnable::CommandStartIRQ)});
}
};
__declare_io_port_global(IndexStatus_t, IndexStatus, 0x1F801800);

24
include/PSX/System/IOPorts/memory_io.hpp Normal file
View File

@ -0,0 +1,24 @@
#ifndef __JABYENGINE_MEMORY_IO_HPP__
#define __JABYENGINE_MEMORY_IO_HPP__
#include "ioport.hpp"
namespace JabyEngine {
namespace Memory_IO {
struct COM_DELAY {
typedef uint32_t Type;
static constexpr uint32_t SetupValue = 0x1325;
};
struct CD_DELAY {
typedef uint32_t Type;
static constexpr uint32_t SetupValue = 0x20943;
};
__declare_io_port_global_simple(COM_DELAY::Type, COM_DELAY, 0x1F801020);
__declare_io_port_global_simple(CD_DELAY::Type, CD_DELAY, 0x1F801018);
}
}
#endif //!__JABYENGINE_MEMORY_IO_HPP__

19
src/Library/src/BootLoader/cd_boot.cpp
View File

@ -1,13 +1,26 @@
#include "../../include/BootLoader/boot_loader.hpp"
#include <PSX/System/IOPorts/cd_io.hpp>
#include <PSX/System/IOPorts/interrupt_io.hpp>
#include <PSX/System/IOPorts/memory_io.hpp>
#include <PSX/System/syscalls.h>
namespace JabyEngine {
namespace boot {
namespace CD {
void setup() {
CD_IO::PortIndex0::change_to();
CD_IO::PortIndex0::DataFifo.read();
CD_IO::PortIndex0::DataFifo16.read();
__syscall_EnterCriticalSection();
Memory_IO::COM_DELAY.write(Memory_IO::COM_DELAY::SetupValue);
Memory_IO::CD_DELAY.write(Memory_IO::CD_DELAY::SetupValue);
//Equeue Callback?
CD_IO::PortIndex1::change_to();
CD_IO::Interrupt::ack_extended(CD_IO::PortIndex1::InterruptFlagRegister);
CD_IO::Interrupt::enable(CD_IO::PortIndex1::InterruptEnableRegister);
Interrupt::ack_irq(Interrupt::CDROM);
Interrupt::enable_irq(Interrupt::CDROM);
__syscall_ExitCriticalSection();
}
}
}

2
src/Library/src/BootLoader/start_boot.cpp
View File

@ -15,6 +15,8 @@ namespace JabyEngine {
enable_DMA();
SPU::stop_voices();
CD::setup();
Timer::setup();
const auto start = HighResTime::get_time_stamp();