usbloadergx/source/disc.c

311 lines
5.7 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ogcsys.h>
#include <ogc/lwp_watchdog.h>
#include <wiiuse/wpad.h>
#include "apploader.h"
#include "disc.h"
#include "video.h"
#include "wdvd.h"
#include "fst.h"
/* Constants */
#define PTABLE_OFFSET 0x40000
#define WII_MAGIC 0x5D1C9EA3
/* Disc pointers */
static u32 *buffer = (u32 *)0x93000000;
static u8 *diskid = (u8 *)0x80000000;
static char gameid[8];
void __Disc_SetLowMem(void)
{
/* Setup low memory */
*(vu32 *)0x80000030 = 0x00000000;
*(vu32 *)0x80000060 = 0x38A00040;
*(vu32 *)0x800000E4 = 0x80431A80;
*(vu32 *)0x800000EC = 0x81800000;
*(vu32 *)0x800000F4 = 0x817E5480;
*(vu32 *)0x800000F8 = 0x0E7BE2C0;
*(vu32 *)0x800000FC = 0x2B73A840;
/* Copy disc ID */
memcpy((void *)0x80003180, (void *)0x80000000, 4);
/* Flush cache */
DCFlushRange((void *)0x80000000, 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 'D':
case 'F':
case 'P':
case 'X':
case 'Y':
if (tvmode != CONF_VIDEO_PAL) {
vmode_reg = 5;
vmode = (progressive) ? &TVNtsc480Prog : &TVEurgb60Hz480IntDf;
}
break;
/* NTSC or unknown */
case 'E':
case 'J':
if (tvmode != CONF_VIDEO_NTSC) {
vmode_reg = 0;
vmode = (progressive) ? &TVNtsc480Prog : &TVNtsc480IntDf;
}
break;
}
break;
case 1:
vmode_reg = 1;
progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
vmode = (progressive) ? &TVEurgb60Hz480Prog : &TVPal528IntDf;
break;
case 2:
vmode_reg = 5;
progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
vmode = (progressive) ? &TVEurgb60Hz480Prog : &TVEurgb60Hz480IntDf;
break;
case 3:
vmode_reg = 0;
progressive = (CONF_GetProgressiveScan() > 0) && VIDEO_HaveComponentCable();
vmode = (progressive) ? &TVNtsc480Prog : &TVNtsc480IntDf;
break;
case 4:
// vmode = VIDEO_GetPreferredMode(NULL);
break;
}
/* Set video mode register */
*(vu32 *)0x800000CC = 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();
}
}
void __Disc_SetTime(void)
{
/* Extern */
extern void settime(long long);
/* 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(u8 *id, int ios222)
{
/* Set USB mode */
return WDVD_SetUSBMode(id, ios222);
}
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)
{
entry_point p_entry;
s32 ret;
/* Open specified partition */
ret = WDVD_OpenPartition(offset);
if (ret < 0)
return ret;
/* Run apploader */
ret = Apploader_Run(&p_entry, cheat, videoselected, vipatch);
if (ret < 0)
return ret;
/* Setup low memory */
__Disc_SetLowMem();
/* Set an appropiate video mode */
__Disc_SetVMode(videoselected);
/* Set time */
__Disc_SetTime();
if (cheat == 1) {
/* OCARINA STUFF - FISHEARS*/
memset(gameid, 0, 8);
memcpy(gameid, (char*)0x80000000, 6);
do_sd_code(gameid);
/* OCARINA STUFF - FISHEARS*/
}
/* Disconnect Wiimote */
WPAD_Flush(0);
WPAD_Disconnect(0);
WPAD_Shutdown();
/* Shutdown IOS subsystems */
SYS_ResetSystem(SYS_SHUTDOWN, 0, 0);
/* Jump to entry point */
p_entry();
return 0;
}
s32 Disc_WiiBoot(u8 videoselected, u8 cheat, u8 vipatch)
{
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);
}