XPARAM Support & some tweaks

.gitignore

@@ -21,7 +21,6 @@
 *.s
 
 # folders where object files and embedded stuff is dumped
-src/
 asm/
 
 #other non desired files

.vscode/settings.json

@@ -13,6 +13,7 @@
         "osdhistory.h": "c",
         "ps2_sio2man_driver.h": "c",
         "fcntl.h": "c",
-        "siocookie.h": "c"
+        "siocookie.h": "c",
+        "xparam.h": "c"
     }
 }

Makefile

@@ -14,6 +14,7 @@ export HEADER
 HAS_LOCAL_IRX = 1 # whether to embed or not non vital IRX (wich will be loaded from memcard files)
 DEBUG ?= 0
 PSX ?= 0 # PSX DESR support
+XPARAM ?= 0 # whether to include or not support for managing the DECKARD compatiblity modes when running discs
 PROHBIT_DVD_0100 ?= 0 # prohibit the DVD Players v1.00 and v1.01 from being booted.
 XCDVD_READKEY ?= 0 # Enable the newer sceCdReadKey checks, which are only supported by a newer CDVDMAN module.
 USE_ROM_PADMAN ?= 1
@@ -56,7 +57,7 @@ EE_OBJS = main.o \
           util.o elf.o timer.o ps2.o ps1.o dvdplayer.o \
           modelname.o libcdvd_add.o OSDHistory.o OSDInit.o OSDConfig.o \
           $(EMBEDDED_STUFF) \
-		  $(IOP_OBJS)
+		      $(IOP_OBJS)
 
 EMBEDDED_STUFF = icon_sys_A.o icon_sys_J.o icon_sys_C.o
 
@@ -118,6 +119,14 @@ ifneq ($(HAS_LOCAL_IRX), 1)
   EE_CFLAGS += -DHAS_EMBEDDED_IRX
 endif
 
+ifeq ($(XPARAM), 1)
+  EE_OBJS += xparam.o
+  EE_CFLAGS += -DXPARAM
+  ifeq ($(HDD), 1)
+  $(warning --- XPARAM and HDD support enabled. consoles wich have HDD support cannot benefit from XPARAM and vice versa)
+  endif
+endif
+
 ifeq ($(DUMMY_TIMEZONE), 1)
   EE_CFLAGS += -DDUMMY_TIMEZONE
 endif

include/xparam.h

@@ -0,0 +1,34 @@
+/*
+#
+# DECKARD Configs
+#--------------------------
+# Copyright 2023 krat0s.
+#
+*/
+
+#include <tamtypes.h>
+#define GM_IOP_TYPE (0x80000000)
+
+#define PARAM_MDEC_DELAY_CYCLE         (0x00)
+#define PARAM_SPU_INT_DELAY_LIMIT      (0x01)
+#define PARAM_SPU_INT_DELAY_PPC_COEFF  (0x02)
+#define PARAM_SPU2_INT_DELAY_LIMIT     (0x03)
+#define PARAM_SPU2_INT_DELAY_PPC_COEFF (0x04)
+#define PARAM_DMAC_CH10_INT_DELAY      (0x05)
+#define PARAM_CPU_DELAY                (0x06)
+#define PARAM_SPU_DMA_WAIT_LIMIT       (0x07)
+#define PARAM_GPU_DMA_WAIT_LIMIT       (0x08)
+#define PARAM_DMAC_CH10_INT_DELAY_DPC  (0x09)
+#define PARAM_CPU_DELAY_DPC            (0x0A)
+#define PARAM_USB_DELAYED_INT_ENABLE   (0x0B)
+#define PARAM_TIMER_LOAD_DELAY         (0x0C)
+#define PARAM_SIO0_DTR_SCK_DELAY       (0x0D)
+#define PARAM_SIO0_DSR_SCK_DELAY_C     (0x0E)
+#define PARAM_SIO0_DSR_SCK_DELAY_M     (0x0F)
+#define PARAM_MIPS_DCACHE_ON           (0x10)
+#define PARAM_CACHE_FLASH_CHANNELS     (0x11)
+
+#define GM_IF ((vu32 *)0x1F801450)
+
+void ResetDeckardXParams();
+void ApplyDeckardXParam(const char *title);

src/OSDHistory.c

@@ -229,6 +229,11 @@ static u16 GetTimestamp(void)
 static void AddHistoryRecord(const char *name)
 {
     DPRINTF("%s: start\n", __func__);
+    if (name == NULL)
+    {
+        DPRINTF("GAME ID IS NULL, ABORTING.\n");
+        return;
+    }
     int i, value, LeastUsedRecord, LeastUsedRecordLaunchCount, LeastUsedRecordTimestamp, NewLaunchCount;
     u8 BlankSlotList[MAX_HISTORY_ENTRIES];
     int IsNewRecord;

src/main.c

@@ -37,6 +37,10 @@
 #include "modelname.h"
 #include "banner.h"
 
+#ifdef XPARAM
+#include "xparam.h"
+#endif
+
 #ifdef PSX
 #include <iopcontrol_special.h>
 #include "psx/plibcdvd_add.h"
@@ -214,7 +218,9 @@ int main(int argc, char *argv[])
             break;
         }
     } while ((STAT & 0x80) || (result == 0));
-
+#ifdef XPARAM
+    ResetDeckardXParams();
+#endif
     // Remember to set the video output option (RGB or Y Cb/Pb Cr/Pr) accordingly, before SetGsCrt() is called.
     DPRINTF("Setting vmode\n");
     SetGsVParam(OSDConfigGetVideoOutput() == VIDEO_OUTPUT_RGB ? VIDEO_OUTPUT_RGB : VIDEO_OUTPUT_COMPONENT);

src/ps2.c

@@ -12,6 +12,9 @@
 #include "ps2.h"
 #include "OSDInit.h"
 #include "OSDHistory.h"
+#ifdef XPARAM
+#include "xparam.h"
+#endif
 #include "debugprintf.h"
 
 void CleanUp(void);
@@ -301,7 +304,11 @@ int PS2DiscBoot(int skip_PS2LOGO)
     DPRINTF("%s updating play history\n", __func__);
     DPRINTF("%s:\n\tline:[%s]\n\tps2discboot:[%s]\n", __func__, line, ps2disc_boot);
     UpdatePlayHistory(ps2disc_boot);
-
+
+#ifdef XPARAM
+	ApplyDeckardXParam(ps2disc_boot);
+#endif
+
     CleanUp();
     SifExitCmd();
     if (skip_PS2LOGO) {