mirror of
https://github.com/DaedalusX64/daedalus.git
synced 2025-04-02 10:21:48 -04:00
141 lines
3.8 KiB
C++
141 lines
3.8 KiB
C++
/*
|
|
Copyright (C) 2008-2009 Howard Su (howard0su@gmail.com)
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
|
|
#include "Base/Types.h"
|
|
#include "Debug/DBGConsole.h"
|
|
#include "Core/FlashMem.h"
|
|
#include "Core/Memory.h"
|
|
#include "Core/DMA.h"
|
|
#include "Core/ROM.h"
|
|
#include "Core/Save.h"
|
|
#include <cstring>
|
|
|
|
u32 FlashStatus[2];
|
|
u32 FlashRAM_Offset = 0;
|
|
static u8 FlashBlock[128];
|
|
|
|
enum TFlashRam_Types
|
|
{
|
|
MX29L1100_ID = 0x00c2001e,
|
|
MX29L1101_ID = 0x00c2001d,
|
|
MN63F8MPN_ID = 0x003200f1,
|
|
};
|
|
|
|
enum TFlashRam_Modes
|
|
{
|
|
FLASHRAM_MODE_NOPES = 0,
|
|
FLASHRAM_MODE_ERASE = 1,
|
|
FLASHRAM_MODE_WRITE,
|
|
FLASHRAM_MODE_READ,
|
|
FLASHRAM_MODE_STATUS,
|
|
};
|
|
TFlashRam_Modes FlashFlag = FLASHRAM_MODE_NOPES;
|
|
|
|
void Flash_Init()
|
|
{
|
|
FlashFlag = FLASHRAM_MODE_NOPES;
|
|
FlashRAM_Offset = 0;
|
|
FlashStatus[0] = 0;
|
|
FlashStatus[1] = MX29L1100_ID; // Default to MX29L1100 as it is the most common one and is what pj64 uses
|
|
}
|
|
|
|
bool DMA_FLASH_CopyToDRAM(u32 dest, u32 StartOffset, u32 len)
|
|
{
|
|
switch(FlashFlag)
|
|
{
|
|
case FLASHRAM_MODE_READ:
|
|
{
|
|
StartOffset = StartOffset << 1;
|
|
return DMA_HandleTransfer( g_pu8RamBase, dest, gRamSize, (u8*)g_pMemoryBuffers[MEM_SAVE], StartOffset, MemoryRegionSizes[MEM_SAVE], len );
|
|
}
|
|
case FLASHRAM_MODE_STATUS:
|
|
DAEDALUS_ASSERT(len == sizeof(u32) * 2, "Len is not correct when fetch status.");
|
|
*(u32 *)(g_pu8RamBase + dest) = FlashStatus[0];
|
|
*(u32 *)(g_pu8RamBase + dest + sizeof(u32)) = FlashStatus[1];
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool DMA_FLASH_CopyFromDRAM(u32 dest, u32 len)
|
|
{
|
|
if(FlashFlag == FLASHRAM_MODE_WRITE )
|
|
{
|
|
return DMA_HandleTransfer( FlashBlock, 0, 128, g_pu8RamBase, dest, gRamSize, len );
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void Flash_DoCommand(u32 FlashRAM_Command)
|
|
{
|
|
switch (FlashRAM_Command & 0xFF000000)
|
|
{
|
|
case 0xD2000000:
|
|
switch (FlashFlag)
|
|
{
|
|
//DBGConsole_Msg(0, "Writing to FlashRam command: 0x%08x - mode: %d",FlashRAM_Command, FlashFlag);
|
|
case FLASHRAM_MODE_NOPES:
|
|
case FLASHRAM_MODE_READ:
|
|
case FLASHRAM_MODE_STATUS:
|
|
break;
|
|
case FLASHRAM_MODE_ERASE:
|
|
memset((u8*)g_pMemoryBuffers[MEM_SAVE] + FlashRAM_Offset, 0xFF, 128);
|
|
Save_MarkSaveDirty();
|
|
break;
|
|
case FLASHRAM_MODE_WRITE:
|
|
memcpy((u8*)g_pMemoryBuffers[MEM_SAVE] + FlashRAM_Offset, FlashBlock, 128);
|
|
Save_MarkSaveDirty();
|
|
break;
|
|
default:
|
|
DBGConsole_Msg(0, "Warning: Unknown FlashRam mode: %d", FlashFlag);
|
|
break;
|
|
}
|
|
FlashFlag = FLASHRAM_MODE_NOPES;
|
|
break;
|
|
case 0xE1000000:
|
|
FlashFlag = FLASHRAM_MODE_STATUS;
|
|
FlashStatus[0] = 0x11118001;
|
|
break;
|
|
case 0xF0000000:
|
|
FlashFlag = FLASHRAM_MODE_READ;
|
|
FlashStatus[0] = 0x11118004;
|
|
break;
|
|
case 0x4B000000:
|
|
FlashRAM_Offset = (FlashRAM_Command & 0xffff) * 128;
|
|
break;
|
|
case 0x78000000:
|
|
FlashFlag = FLASHRAM_MODE_ERASE;
|
|
FlashStatus[0] = 0x11118008;
|
|
break;
|
|
case 0xB4000000:
|
|
FlashFlag = FLASHRAM_MODE_WRITE;
|
|
break;
|
|
case 0xA5000000:
|
|
FlashRAM_Offset = (FlashRAM_Command & 0xffff) * 128;
|
|
FlashStatus[0] = 0x11118004;
|
|
break;
|
|
case 0x00000000:
|
|
break;
|
|
default:
|
|
DBGConsole_Msg(0, "Warning: Unknown FlashRam command: 0x%08x",FlashRAM_Command);
|
|
break;
|
|
}
|
|
}
|