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usbloadergx/source/usbloader/disc.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ogcsys.h>
#include <ogc/lwp_watchdog.h>
#include <wiiuse/wpad.h>
#include "patches/fst.h"
#include "patches/gamepatches.h"
#include "patches/wip.h"
#include "apploader.h"
#include "disc.h"
#include "video.h"
#include "wdvd.h"
#include "alternatedol.h"
#include "memory.h"
#include "wbfs.h"
#include "../gecko.h"
#include "../fatmounter.h"
/* Constants */
#define PTABLE_OFFSET 0x40000
#define WII_MAGIC 0x5D1C9EA3
//appentrypoint
u32 appentrypoint;
/* Disc pointers */
static u32 *buffer = (u32 *)0x93000000;
static u8 *diskid = (u8 *)Disc_ID;
void __Disc_SetLowMem(void) {
*Sys_Magic = 0x0D15EA5E; // Standard Boot Code
*Version = 0x00000001; // Version
*Arena_L = 0x00000000; // Arena Low
*BI2 = 0x817E5480; // BI2
*Bus_Speed = 0x0E7BE2C0; // Console Bus Speed
*CPU_Speed = 0x2B73A840; // Console CPU Speed
/* Setup low memory */
*Assembler = 0x38A00040; // Assembler
*(u32 *)0x800000E4 = 0x80431A80;
*Dev_Debugger = 0x81800000; // Dev Debugger Monitor Address
*Simulated_Mem = 0x01800000; // Simulated Memory Size
*(vu32 *)0xCD00643C = 0x00000000; // 32Mhz on Bus
//If the game is sam & max: season 1 put this shit in
char gameid[8];
memset(gameid, 0, 8);
memcpy(gameid, (char*)Disc_ID, 6);
if ((strcmp(gameid,"R3XE6U")==0) || (strcmp(gameid,"R3XP6V")==0))
{
*GameID_Address = 0x80000000; // Game ID Address
}
/* Copy disc ID */
memcpy((void *)Online_Check, (void *)Disc_ID, 4);
/* Flush cache */
DCFlushRange((void *)Disc_ID, 0x3F00);
}
void __Disc_SetVMode(u8 videoselected) {
GXRModeObj *vmode = NULL;
u32 progressive, tvmode, vmode_reg = 0;
/* Get video mode configuration */
progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
tvmode = CONF_GetVideo();
/* Select video mode register */
switch (tvmode) {
case CONF_VIDEO_PAL:
vmode_reg = (CONF_GetEuRGB60() > 0) ? 5 : 1;
break;
case CONF_VIDEO_MPAL:
vmode_reg = 4;
break;
case CONF_VIDEO_NTSC:
vmode_reg = 0;
break;
}
switch (videoselected) {
case 0:
/* Select video mode */
switch (diskid[3]) {
/* PAL */
case 'P':
case 'D':
case 'F':
case 'I':
case 'S':
case 'H':
case 'X':
case 'Y':
case 'Z':
if (tvmode != CONF_VIDEO_PAL) {
vmode_reg = 5;
vmode = (progressive) ? &TVNtsc480Prog : &TVEurgb60Hz480IntDf;
}
break;
/* NTSC or unknown */
case 'E':
case 'J':
case 'K':
case 'W':
if (tvmode != CONF_VIDEO_NTSC) {
vmode_reg = 0;
vmode = (progressive) ? &TVNtsc480Prog : &TVNtsc480IntDf;
}
break;
}
break;
case 1:
vmode = &TVPal528IntDf;
vmode_reg = (vmode->viTVMode) >> 2;
break;
case 2:
progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
vmode = (progressive) ? &TVNtsc480Prog : &TVEurgb60Hz480IntDf;
vmode_reg = (vmode->viTVMode) >> 2;
break;
case 3:
progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
vmode = (progressive) ? &TVNtsc480Prog : &TVNtsc480IntDf;
vmode_reg = (vmode->viTVMode) >> 2;
break;
case 4:
// vmode = VIDEO_GetPreferredMode(NULL);
break;
}
/* Set video mode register */
*Video_Mode = vmode_reg;
/* Set video mode */
if (vmode) {
VIDEO_Configure(vmode);
/* Setup video */
VIDEO_SetBlack(FALSE);
VIDEO_Flush();
VIDEO_WaitVSync();
if (vmode->viTVMode & VI_NON_INTERLACE)
VIDEO_WaitVSync();
}
gprintf("\nVideo mode - %s",((progressive)?"progressive":"interlaced"));
}
void __Disc_SetTime(void) {
/* Extern */
extern void settime(u64);
/* Set proper time */
settime(secs_to_ticks(time(NULL) - 946684800));
}
s32 __Disc_FindPartition(u64 *outbuf) {
u64 offset = 0, table_offset = 0;
u32 cnt, nb_partitions;
s32 ret;
/* Read partition info */
ret = WDVD_UnencryptedRead(buffer, 0x20, PTABLE_OFFSET);
if (ret < 0)
return ret;
/* Get data */
nb_partitions = buffer[0];
table_offset = buffer[1] << 2;
/* Read partition table */
ret = WDVD_UnencryptedRead(buffer, 0x20, table_offset);
if (ret < 0)
return ret;
/* Find game partition */
for (cnt = 0; cnt < nb_partitions; cnt++) {
u32 type = buffer[cnt * 2 + 1];
/* Game partition */
if (!type)
offset = buffer[cnt * 2] << 2;
}
/* No game partition found */
if (!offset)
return -1;
/* Set output buffer */
*outbuf = offset;
return 0;
}
s32 Disc_Init(void) {
/* Init DVD subsystem */
return WDVD_Init();
}
s32 Disc_Open(void) {
s32 ret;
/* Reset drive */
ret = WDVD_Reset();
if (ret < 0)
return ret;
/* Read disc ID */
return WDVD_ReadDiskId(diskid);
}
s32 Disc_Wait(void) {
u32 cover = 0;
s32 ret;
/* Wait for disc */
while (!(cover & 0x2)) {
/* Get cover status */
ret = WDVD_GetCoverStatus(&cover);
if (ret < 0)
return ret;
}
return 0;
}
s32 Disc_SetUSB(const u8 *id) {
u32 part = 0;
if (wbfs_part_fs) {
part = wbfs_part_lba;
} else {
part = wbfs_part_idx ? wbfs_part_idx - 1 : 0;
}
/* Set USB mode */
return WDVD_SetUSBMode(id, part);
}
s32 Disc_ReadHeader(void *outbuf) {
/* Read disc header */
return WDVD_UnencryptedRead(outbuf, sizeof(struct discHdr), 0);
}
s32 Disc_IsWii(void) {
struct discHdr *header = (struct discHdr *)buffer;
s32 ret;
/* Read disc header */
ret = Disc_ReadHeader(header);
if (ret < 0)
return ret;
/* Check magic word */
if (header->magic != WII_MAGIC)
return -1;
return 0;
}
s32 Disc_BootPartition(u64 offset, u8 videoselected, u8 cheat, u8 vipatch, u8 patchcountrystring, u8 error002fix, u8 alternatedol, u32 alternatedoloffset) {
entry_point p_entry;
s32 ret;
/* Open specified partition */
ret = WDVD_OpenPartition(offset);
if (ret < 0)
return ret;
/* Setup low memory */
__Disc_SetLowMem();
char gameid[8];
memset(gameid, 0, 8);
memcpy(gameid, (char*)Disc_ID, 6);
load_wip_code((u8 *) &gameid);
/* If a wip file is loaded for this game this does nothing - Dimok */
PoPPatch();
/* Run apploader */
ret = Apploader_Run(&p_entry, cheat, videoselected, vipatch, patchcountrystring, error002fix, alternatedol, alternatedoloffset);
if (ret < 0)
return ret;
free_wip();
bool cheatloaded = false;
if (cheat)
{
/* OCARINA STUFF - FISHEARS*/
if(ocarina_load_code((u8 *) gameid) > 0)
{
ocarina_do_code();
cheatloaded = true;
}
}
//kill the USB and SD
USBDevice_deInit();
SDCard_deInit();
/* Set an appropiate video mode */
__Disc_SetVMode(videoselected);
/* Set time */
__Disc_SetTime();
//gprintf("\n\tDe-init SD & USB");
/* Disconnect Wiimote */
WPAD_Flush(0);
WPAD_Disconnect(0);
WPAD_Shutdown();
// Anti-green screen fix
VIDEO_SetBlack(TRUE);
VIDEO_Flush();
VIDEO_WaitVSync();
gprintf("\n\nUSB Loader GX is done.\n\n");
/* Shutdown IOS subsystems */
// fix for PeppaPig (from NeoGamma)
extern void __exception_closeall();
IRQ_Disable();
__IOS_ShutdownSubsystems();
__exception_closeall();
appentrypoint = (u32) p_entry;
if (cheat == 1 && cheatloaded)
{
__asm__(
"lis %r3, appentrypoint@h\n"
"ori %r3, %r3, appentrypoint@l\n"
"lwz %r3, 0(%r3)\n"
"mtlr %r3\n"
"lis %r3, 0x8000\n"
"ori %r3, %r3, 0x18A8\n"
"mtctr %r3\n"
"bctr\n"
);
}
else
{
__asm__(
"lis %r3, appentrypoint@h\n"
"ori %r3, %r3, appentrypoint@l\n"
"lwz %r3, 0(%r3)\n"
"mtlr %r3\n"
"blr\n"
);
}
return 0;
}
s32 Disc_WiiBoot(u8 videoselected, u8 cheat, u8 vipatch, u8 patchcountrystring, u8 error002fix, u8 alternatedol, u32 alternatedoloffset) {
u64 offset;
s32 ret;
/* Find game partition offset */
ret = __Disc_FindPartition(&offset);
if (ret < 0)
return ret;
/* Boot partition */
return Disc_BootPartition(offset, videoselected, cheat, vipatch, patchcountrystring, error002fix, alternatedol, alternatedoloffset);
}
void PatchCountryStrings(void *Address, int Size) {
u8 SearchPattern[4] = { 0x00, 0x00, 0x00, 0x00 };
u8 PatchData[4] = { 0x00, 0x00, 0x00, 0x00 };
u8 *Addr = (u8*)Address;
int wiiregion = CONF_GetRegion();
switch (wiiregion) {
case CONF_REGION_JP:
SearchPattern[0] = 0x00;
SearchPattern[1] = 0x4A; // J
SearchPattern[2] = 0x50; // P
break;
case CONF_REGION_EU:
SearchPattern[0] = 0x02;
SearchPattern[1] = 0x45; // E
SearchPattern[2] = 0x55; // U
break;
case CONF_REGION_KR:
SearchPattern[0] = 0x04;
SearchPattern[1] = 0x4B; // K
SearchPattern[2] = 0x52; // R
break;
case CONF_REGION_CN:
SearchPattern[0] = 0x05;
SearchPattern[1] = 0x43; // C
SearchPattern[2] = 0x4E; // N
break;
case CONF_REGION_US:
default:
SearchPattern[0] = 0x01;
SearchPattern[1] = 0x55; // U
SearchPattern[2] = 0x53; // S
}
switch (diskid[3]) {
case 'J':
PatchData[1] = 0x4A; // J
PatchData[2] = 0x50; // P
break;
case 'D':
case 'F':
case 'P':
case 'X':
case 'Y':
PatchData[1] = 0x45; // E
PatchData[2] = 0x55; // U
break;
case 'E':
default:
PatchData[1] = 0x55; // U
PatchData[2] = 0x53; // S
}
while (Size >= 4) {
if (Addr[0] == SearchPattern[0] && Addr[1] == SearchPattern[1] && Addr[2] == SearchPattern[2] && Addr[3] == SearchPattern[3]) {
//*Addr = PatchData[0];
Addr += 1;
*Addr = PatchData[1];
Addr += 1;
*Addr = PatchData[2];
Addr += 1;
//*Addr = PatchData[3];
Addr += 1;
Size -= 4;
} else {
Addr += 4;
Size -= 4;
}
}
}
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