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/* *************************************
* Includes
* *************************************/
#include "Global_Inc.h"
#include "System.h"
#include "Serial.h"
#include "LoadMenu.h"
#include "EndAnimation.h"
/* *************************************
* Defines
* *************************************/
#define PSX_EXE_HEADER_SIZE 2048
#define EXE_DATA_PACKET_SIZE 8
/* *************************************
* Local Prototypes
* *************************************/
/* *************************************
* Local Variables
* *************************************/
/* Untitled1 (10/07/2017 18:57:47)
StartOffset: 00000000, EndOffset: 0000002F, Length: 00000030 */
/* Untitled2 (10/07/2017 21:10:19)
StartOffset: 00000000, EndOffset: 000357FF, Length: 00035800 */
extern void _start(void);
int main(void)
{
uint8_t* inBuffer = SystemGetBufferAddress();
// int (*exeAddress)(void);
//System initialization
dprintf("SystemInit()\n");
SystemInit();
dprintf("LoadMenuInit()\n");
LoadMenuInit();
if(1)
{
uint32_t initPC_Address;
uint32_t RAMDest_Address;
uint32_t ExeSize = 0;
uint32_t i;
void (*exeAddress)(void);
GfxSetGlobalLuminance(0);
SerialInit();
// Read PSX-EXE header (32 bytes will be enough).
SerialSetState(SERIAL_STATE_READING_HEADER);
SerialRead(inBuffer, 32);
// Get initial program counter address from PSX-EXE header.
initPC_Address = (inBuffer[0x10] | (inBuffer[0x11] << 8) | (inBuffer[0x12] << 16) | (inBuffer[0x13] << 24) );
SerialSetPCAddress(initPC_Address);
//dprintf("initPC_Address = 0x%08X\n", initPC_Address);
// Get destination address in RAM from PSX-EXE header.
RAMDest_Address = (inBuffer[0x18] | (inBuffer[0x19] << 8) | (inBuffer[0x1A] << 16) | (inBuffer[0x1B] << 24) );
SerialSetRAMDestAddress(RAMDest_Address);
//dprintf("RAMDest_Address = 0x%08X\n", RAMDest_Address);
// We have received all data correctly. Send ACK.
memset(inBuffer, 0, SystemGetBufferSize());
SerialSetState(SERIAL_STATE_WRITING_ACK);
SerialWrite(ACK_BYTE_STRING, sizeof(uint8_t)); // Write ACK
// Get PSX-EXE size, without header, in hexadecimal, little-endian format;
SerialSetState(SERIAL_STATE_READING_EXE_SIZE);
SerialRead(inBuffer, sizeof(uint32_t) );
for(i = 0; i < sizeof(uint32_t); i++)
{
ExeSize |= inBuffer[i] << (i << 3); // (i << 3) == (i * 8)
}
SerialSetExeSize(ExeSize);
//DEBUG_PRINT_VAR(ExeSize);
SerialSetState(SERIAL_STATE_CLEANING_MEMORY);
exeAddress = (void*)initPC_Address;
// Clean memory where EXE data will be loaded, just in case...
memset((void*)RAMDest_Address, 0, (uint32_t)((uint32_t)(&_start) - (uint32_t)(RAMDest_Address) ) );
SerialSetState(SERIAL_STATE_WRITING_ACK);
// We have received PSX-EXE size (without header) correctly. Send ACK.
SerialWrite(ACK_BYTE_STRING, sizeof(uint8_t)); // Write ACK
SerialSetState(SERIAL_STATE_READING_EXE_DATA);
while(GfxIsGPUBusy() == true);
for(i = 0; i < ExeSize; i += EXE_DATA_PACKET_SIZE)
{
uint32_t bytes_to_read;
// Read actual EXE data into proper RAM address.
if( (i + EXE_DATA_PACKET_SIZE) >= ExeSize)
{
bytes_to_read = ExeSize - i;
}
else
{
bytes_to_read = EXE_DATA_PACKET_SIZE;
}
SerialRead((uint8_t*)RAMDest_Address + i, bytes_to_read);
SerialSetExeBytesReceived(bytes_to_read);
SerialWrite(ACK_BYTE_STRING, sizeof(uint8_t)); // Write ACK
}
SetVBlankHandler(&ISR_SystemDefaultVBlank);
// Make a pretty animation before exeting OpenSend application.
EndAnimation();
PSX_DeInit();
// PSX-EXE has been successfully loaded into RAM. Run executable!
//dprintf("Entering exe...\n");
exeAddress();
}
return 0;
}
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