mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-14 06:45:09 +01:00
12606da28e
.improved VDP FIFO timing accuracy .improved Z80 interrupt accuracy .modified CPU Hard Reset start cycles
579 lines
14 KiB
C
579 lines
14 KiB
C
/*
|
|
* file_slot.c
|
|
*
|
|
* FAT and Memory Card SRAM/State slots managment
|
|
*
|
|
* Softdev (2006)
|
|
* Eke-Eke (2007,2008,2009)
|
|
*
|
|
* 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 "shared.h"
|
|
#include "file_slot.h"
|
|
#include "file_fat.h"
|
|
#include "dvd.h"
|
|
#include "gui.h"
|
|
#include "filesel.h"
|
|
#include "saveicon.h"
|
|
|
|
/**
|
|
* libOGC CARD System Work Area
|
|
*/
|
|
static u8 SysArea[CARD_WORKAREA] ATTRIBUTE_ALIGN (32);
|
|
|
|
|
|
/****************************************************************************
|
|
* CardMount
|
|
*
|
|
* libOGC provides the CARD_Mount function, and it should be all you need.
|
|
* However, experience with previous emulators has taught me that you are
|
|
* better off doing a little bit more than that!
|
|
*
|
|
*****************************************************************************/
|
|
static int CardMount(int slot)
|
|
{
|
|
int tries = 0;
|
|
#if defined(HW_DOL)
|
|
*(unsigned long *) (0xCC006800) |= 1 << 13; /*** Disable Encryption ***/
|
|
uselessinquiry ();
|
|
#elif defined(HW_RVL)
|
|
*(unsigned long *) (0xCD006800) |= 1 << 13; /*** Disable Encryption ***/
|
|
#endif
|
|
while (tries < 10)
|
|
{
|
|
VIDEO_WaitVSync ();
|
|
if (CARD_Mount(slot, SysArea, NULL) == CARD_ERROR_READY)
|
|
return 1;
|
|
else
|
|
EXI_ProbeReset ();
|
|
tries++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Slot Management
|
|
*
|
|
*
|
|
****************************************************************************/
|
|
|
|
void slot_autoload(int slot, int device)
|
|
{
|
|
if (!cart.romsize)
|
|
return;
|
|
|
|
SILENT = 1;
|
|
slot_load(slot, device);
|
|
SILENT = 0;
|
|
}
|
|
|
|
void slot_autosave(int slot, int device)
|
|
{
|
|
if (!cart.romsize)
|
|
return;
|
|
|
|
/* only save if SRAM changed */
|
|
if (!slot && (crc32(0, &sram.sram[0], 0x10000) == sram.crc))
|
|
return;
|
|
|
|
SILENT = 1;
|
|
slot_save(slot, device);
|
|
SILENT = 0;
|
|
}
|
|
|
|
void slot_autodetect(int slot, int device, t_slot *ptr)
|
|
{
|
|
if (!ptr)
|
|
return;
|
|
|
|
char filename[MAXPATHLEN];
|
|
memset(ptr,0,sizeof(t_slot));
|
|
|
|
if (!device)
|
|
{
|
|
/* FAT support */
|
|
if (slot > 0)
|
|
sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
|
|
else
|
|
sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
|
|
|
|
/* Open file */
|
|
FILE *fp = fopen(filename, "rb");
|
|
if (fp)
|
|
{
|
|
/* Retrieve date & close */
|
|
struct stat filestat;
|
|
stat(filename, &filestat);
|
|
struct tm *timeinfo = localtime(&filestat.st_mtime);
|
|
ptr->year = 1900 + timeinfo->tm_year;
|
|
ptr->month = timeinfo->tm_mon;
|
|
ptr->day = timeinfo->tm_mday;
|
|
ptr->hour = timeinfo->tm_hour;
|
|
ptr->min = timeinfo->tm_min;
|
|
fclose(fp);
|
|
ptr->valid = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Memory Card support */
|
|
if (slot > 0)
|
|
sprintf(filename,"MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
|
|
else
|
|
sprintf(filename,"MD-%04X.srm", rominfo.realchecksum);
|
|
|
|
/* Initialise the CARD system */
|
|
memset(&SysArea, 0, CARD_WORKAREA);
|
|
CARD_Init("GENP", "00");
|
|
|
|
/* CARD slot */
|
|
device--;
|
|
|
|
/* Mount CARD */
|
|
if (CardMount(device))
|
|
{
|
|
/* Open file */
|
|
card_file CardFile;
|
|
if (CARD_Open(device, filename, &CardFile) == CARD_ERROR_READY)
|
|
{
|
|
/* Retrieve date & close */
|
|
card_stat CardStatus;
|
|
CARD_GetStatus(device, CardFile.filenum, &CardStatus);
|
|
time_t rawtime = CardStatus.time;
|
|
struct tm *timeinfo = localtime(&rawtime);
|
|
ptr->year = 1900 + timeinfo->tm_year;
|
|
ptr->month = timeinfo->tm_mon;
|
|
ptr->day = timeinfo->tm_mday;
|
|
ptr->hour = timeinfo->tm_hour;
|
|
ptr->min = timeinfo->tm_min;
|
|
CARD_Close(&CardFile);
|
|
ptr->valid = 1;
|
|
}
|
|
CARD_Unmount(device);
|
|
}
|
|
}
|
|
}
|
|
|
|
int slot_delete(int slot, int device)
|
|
{
|
|
char filename[MAXPATHLEN];
|
|
int ret = 0;
|
|
|
|
if (!device)
|
|
{
|
|
/* FAT support */
|
|
if (slot > 0)
|
|
{
|
|
/* remove screenshot */
|
|
sprintf(filename,"%s/saves/%s__%d.png", DEFAULT_PATH, rom_filename, slot - 1);
|
|
remove(filename);
|
|
|
|
sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
|
|
}
|
|
else
|
|
sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
|
|
|
|
/* Delete file */
|
|
ret = remove(filename);
|
|
}
|
|
else
|
|
{
|
|
/* Memory Card support */
|
|
if (slot > 0)
|
|
sprintf(filename,"MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
|
|
else
|
|
sprintf(filename,"MD-%04X.srm", rominfo.realchecksum);
|
|
|
|
/* Initialise the CARD system */
|
|
memset(&SysArea, 0, CARD_WORKAREA);
|
|
CARD_Init("GENP", "00");
|
|
|
|
/* CARD slot */
|
|
device--;
|
|
|
|
/* Mount CARD */
|
|
if (CardMount(device))
|
|
{
|
|
/* Delete file */
|
|
ret = CARD_Delete(device,filename);
|
|
CARD_Unmount(device);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int slot_load(int slot, int device)
|
|
{
|
|
char filename[MAXPATHLEN];
|
|
int filesize, done = 0;
|
|
int offset = 0;
|
|
u8 *savebuffer;
|
|
|
|
if (slot > 0)
|
|
{
|
|
GUI_MsgBoxOpen("Information","Loading State ...",1);
|
|
}
|
|
else
|
|
{
|
|
if (!sram.on)
|
|
{
|
|
GUI_WaitPrompt("Error","SRAM is disabled !");
|
|
return 0;
|
|
}
|
|
|
|
GUI_MsgBoxOpen("Information","Loading SRAM ...",1);
|
|
}
|
|
|
|
if (!device)
|
|
{
|
|
/* FAT support */
|
|
if (slot > 0)
|
|
sprintf (filename,"%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
|
|
else
|
|
sprintf (filename,"%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
|
|
|
|
/* Open file */
|
|
FILE *fp = fopen(filename, "rb");
|
|
if (!fp)
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to open file !");
|
|
return 0;
|
|
}
|
|
|
|
/* Read size */
|
|
fseek(fp, 0, SEEK_END);
|
|
filesize = ftell(fp);
|
|
fseek(fp, 0, SEEK_SET);
|
|
|
|
/* allocate buffer */
|
|
savebuffer = (u8 *)memalign(32,filesize);
|
|
if (!savebuffer)
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to allocate memory !");
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
|
|
/* Read into buffer (2k blocks) */
|
|
while (filesize > FATCHUNK)
|
|
{
|
|
fread(savebuffer + done, FATCHUNK, 1, fp);
|
|
done += FATCHUNK;
|
|
filesize -= FATCHUNK;
|
|
}
|
|
|
|
/* Read remaining bytes */
|
|
fread(savebuffer + done, filesize, 1, fp);
|
|
done += filesize;
|
|
fclose(fp);
|
|
}
|
|
else
|
|
{
|
|
/* Memory Card support */
|
|
if (slot > 0)
|
|
sprintf(filename, "MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
|
|
else
|
|
sprintf(filename, "MD-%04X.srm", rominfo.realchecksum);
|
|
|
|
/* Initialise the CARD system */
|
|
char action[64];
|
|
memset(&SysArea, 0, CARD_WORKAREA);
|
|
CARD_Init("GENP", "00");
|
|
|
|
/* CARD slot */
|
|
device--;
|
|
|
|
/* Attempt to mount the card */
|
|
if (!CardMount(device))
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to mount memory card");
|
|
return 0;
|
|
}
|
|
|
|
/* Retrieve the sector size */
|
|
u32 SectorSize = 0;
|
|
int CardError = CARD_GetSectorSize(device, &SectorSize);
|
|
if (!SectorSize)
|
|
{
|
|
sprintf(action, "Invalid sector size (%d)", CardError);
|
|
GUI_WaitPrompt("Error",action);
|
|
CARD_Unmount(device);
|
|
return 0;
|
|
}
|
|
|
|
/* Open file */
|
|
card_file CardFile;
|
|
CardError = CARD_Open(device, filename, &CardFile);
|
|
if (CardError)
|
|
{
|
|
sprintf(action, "Unable to open file (%d)", CardError);
|
|
GUI_WaitPrompt("Error",action);
|
|
CARD_Unmount(device);
|
|
return 0;
|
|
}
|
|
|
|
/* Retrieve file size */
|
|
filesize = CardFile.len;
|
|
if (filesize % SectorSize)
|
|
filesize = ((filesize / SectorSize) + 1) * SectorSize;
|
|
|
|
/* Allocate buffer */
|
|
savebuffer = (u8 *)memalign(32,filesize);
|
|
if (!savebuffer)
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to allocate memory !");
|
|
CARD_Close(&CardFile);
|
|
CARD_Unmount(device);
|
|
return 0;
|
|
}
|
|
|
|
/* Read file sectors */
|
|
while (filesize > 0)
|
|
{
|
|
CARD_Read(&CardFile, &savebuffer[done], SectorSize, done);
|
|
done += SectorSize;
|
|
filesize -= SectorSize;
|
|
}
|
|
|
|
CARD_Close(&CardFile);
|
|
CARD_Unmount(device);
|
|
offset = 2112;
|
|
}
|
|
|
|
if (slot > 0)
|
|
{
|
|
/* Load state */
|
|
if (!state_load(&savebuffer[offset]))
|
|
{
|
|
free(savebuffer);
|
|
GUI_WaitPrompt("Error","Unable to load state !");
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Load SRAM & update CRC */
|
|
memcpy(sram.sram, &savebuffer[offset], 0x10000);
|
|
sram.crc = crc32(0, sram.sram, 0x10000);
|
|
}
|
|
|
|
free(savebuffer);
|
|
GUI_MsgBoxClose();
|
|
return 1;
|
|
}
|
|
|
|
|
|
int slot_save(int slot, int device)
|
|
{
|
|
char filename[MAXPATHLEN];
|
|
int filesize, done = 0;
|
|
int offset = device ? 2112 : 0;
|
|
u8 *savebuffer;
|
|
|
|
if (slot > 0)
|
|
{
|
|
/* allocate buffer */
|
|
savebuffer = (u8 *)memalign(32,STATE_SIZE);
|
|
if (!savebuffer)
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to allocate memory !");
|
|
return 0;
|
|
}
|
|
|
|
GUI_MsgBoxOpen("Information","Saving State ...",1);
|
|
filesize = state_save(&savebuffer[offset]);
|
|
}
|
|
else
|
|
{
|
|
if (!sram.on)
|
|
{
|
|
GUI_WaitPrompt("Error","SRAM is disabled !");
|
|
return 0;
|
|
}
|
|
|
|
/* allocate buffer */
|
|
savebuffer = (u8 *)memalign(32,0x10000+offset);
|
|
if (!savebuffer)
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to allocate memory !");
|
|
return 0;
|
|
}
|
|
|
|
GUI_MsgBoxOpen("Information","Saving SRAM ...",1);
|
|
memcpy(&savebuffer[offset], sram.sram, 0x10000);
|
|
sram.crc = crc32(0, sram.sram, 0x10000);
|
|
filesize = 0x10000;
|
|
}
|
|
|
|
if (!device)
|
|
{
|
|
/* FAT support */
|
|
if (slot > 0)
|
|
sprintf(filename, "%s/saves/%s.gp%d", DEFAULT_PATH, rom_filename, slot - 1);
|
|
else
|
|
sprintf(filename, "%s/saves/%s.srm", DEFAULT_PATH, rom_filename);
|
|
|
|
/* Open file */
|
|
FILE *fp = fopen(filename, "wb");
|
|
if (!fp)
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to open file !");
|
|
free(savebuffer);
|
|
return 0;
|
|
}
|
|
|
|
/* Write from buffer (2k blocks) */
|
|
while (filesize > FATCHUNK)
|
|
{
|
|
fwrite(savebuffer + done, FATCHUNK, 1, fp);
|
|
done += FATCHUNK;
|
|
filesize -= FATCHUNK;
|
|
}
|
|
|
|
/* Write remaining bytes */
|
|
fwrite(savebuffer + done, filesize, 1, fp);
|
|
done += filesize;
|
|
fclose(fp);
|
|
}
|
|
else
|
|
{
|
|
/* Memory Card support */
|
|
if (slot > 0)
|
|
sprintf(filename, "MD-%04X.gp%d", rominfo.realchecksum, slot - 1);
|
|
else
|
|
sprintf(filename, "MD-%04X.srm", rominfo.realchecksum);
|
|
|
|
/* Initialise the CARD system */
|
|
char action[64];
|
|
memset(&SysArea, 0, CARD_WORKAREA);
|
|
CARD_Init("GENP", "00");
|
|
|
|
/* CARD slot */
|
|
device--;
|
|
|
|
/* Attempt to mount the card */
|
|
if (!CardMount(device))
|
|
{
|
|
GUI_WaitPrompt("Error","Unable to mount memory card");
|
|
free(savebuffer);
|
|
return 0;
|
|
}
|
|
|
|
/* Retrieve the sector size */
|
|
u32 SectorSize = 0;
|
|
int CardError = CARD_GetSectorSize(device, &SectorSize);
|
|
if (!SectorSize)
|
|
{
|
|
sprintf(action, "Invalid sector size (%d)", CardError);
|
|
GUI_WaitPrompt("Error",action);
|
|
CARD_Unmount(device);
|
|
free(savebuffer);
|
|
return 0;
|
|
}
|
|
|
|
/* Build the output buffer */
|
|
char comment[2][32] = { {"Genesis Plus GX"}, {"SRAM Save"} };
|
|
strcpy (comment[1], filename);
|
|
memcpy (&savebuffer[0], &icon, 2048);
|
|
memcpy (&savebuffer[2048], &comment[0], 64);
|
|
|
|
/* Adjust file size */
|
|
filesize += 2112;
|
|
if (filesize % SectorSize)
|
|
filesize = ((filesize / SectorSize) + 1) * SectorSize;
|
|
|
|
/* Check if file already exists */
|
|
card_file CardFile;
|
|
if (CARD_Open(device, filename, &CardFile) == CARD_ERROR_READY)
|
|
{
|
|
int size = filesize - CardFile.len;
|
|
CARD_Close(&CardFile);
|
|
memset(&CardFile,0,sizeof(CardFile));
|
|
|
|
/* Check file new size */
|
|
if (size > 0)
|
|
{
|
|
CardError = CARD_Create(device, "TEMP", size, &CardFile);
|
|
if (CardError)
|
|
{
|
|
sprintf(action, "Unable to increase file size (%d)", CardError);
|
|
GUI_WaitPrompt("Error",action);
|
|
CARD_Unmount(device);
|
|
free(savebuffer);
|
|
return 0;
|
|
}
|
|
|
|
/* delete temporary file */
|
|
CARD_Close(&CardFile);
|
|
memset(&CardFile,0,sizeof(CardFile));
|
|
CARD_Delete(device, "TEMP");
|
|
}
|
|
|
|
/* delete previously existing file */
|
|
CARD_Delete(device, filename);
|
|
}
|
|
|
|
/* Create a new file */
|
|
CardError = CARD_Create(device, filename, filesize, &CardFile);
|
|
if (CardError)
|
|
{
|
|
sprintf(action, "Unable to create file (%d)", CardError);
|
|
GUI_WaitPrompt("Error",action);
|
|
CARD_Unmount(device);
|
|
free(savebuffer);
|
|
return 0;
|
|
}
|
|
|
|
/* Update file informations */
|
|
time_t rawtime;
|
|
time(&rawtime);
|
|
card_stat CardStatus;
|
|
CARD_GetStatus(device, CardFile.filenum, &CardStatus);
|
|
CardStatus.icon_addr = 0x0;
|
|
CardStatus.icon_fmt = 2;
|
|
CardStatus.icon_speed = 1;
|
|
CardStatus.comment_addr = 2048;
|
|
CardStatus.time = rawtime;
|
|
CARD_SetStatus(device, CardFile.filenum, &CardStatus);
|
|
|
|
/* Write file sectors */
|
|
while (filesize > 0)
|
|
{
|
|
CARD_Write(&CardFile, &savebuffer[done], SectorSize, done);
|
|
filesize -= SectorSize;
|
|
done += SectorSize;
|
|
}
|
|
|
|
/* Close file */
|
|
CARD_Close(&CardFile);
|
|
CARD_Unmount(device);
|
|
}
|
|
|
|
GUI_MsgBoxClose();
|
|
free(savebuffer);
|
|
|
|
/* Save screenshot */
|
|
if (slot && !device)
|
|
{
|
|
sprintf(filename,"%s/saves/%s__%d.png", DEFAULT_PATH, rom_filename, slot - 1);
|
|
gxSaveScreenshot(filename);
|
|
}
|
|
|
|
return 1;
|
|
}
|